1. The heavy metal stirring, adsorbing and filtering device for the industrial sewage comprises a treatment box (10) and an electrolytic cell (20) arranged at the top of the treatment box (10), wherein the treatment box (10) is internally divided into a metal simple substance filtering cavity (11) and a metal ion chelating cavity (12) from top to bottom by a partition plate, and is characterized in that the electrolytic cell (20) is internally divided into a plurality of treatment pools (21) by baffle plates, water inlet pipes (22) sequentially penetrating through the treatment pools (21) are arranged on the side wall of the electrolytic cell (20), a quantitative water diversion component (23) communicated with the water inlet pipes (22) is arranged in the treatment pools (21), a timing electrolytic component (24) is arranged at the top of the treatment pools (21), and a water drainage component (25) used for discharging the electrolyzed sewage into the metal simple substance filtering cavity (11) is arranged at the bottom of the treatment pools (21;

the utility model discloses a sewage treatment device, including metal simple substance filter chamber (11) inner chamber bottom be equipped with lift filtration parts (13), it is equipped with stirring dirt absorbing device (30) to handle case (10) bottom, stirring dirt absorbing device (30) is including locating rotation lifting means (31) of handling case (10) bottom, locate rotation lifting means (31) execution end and top run through metal ion chelate chamber (12), lift filtration parts (13) and extend to central siphon (32) in metal simple substance filter chamber (11) in proper order, and the simple substance at intercommunication central siphon (32) lateral wall top is blotted parts (33), locate filter disc (34) in metal ion chelate chamber (12) and with central siphon (32) intercommunication, locate on central siphon (32) outer wall and overlap filter disc (34) outside filter material blotter parts (35), and locate central siphon (32) bottom and execution end extend to negative pressure parts (36) in central siphon (32), the negative pressure part (36) is used for communicating with one of the simple substance absorbing and removing part (33), the filter disc (34) and the filtered substance absorbing and removing part (35) through the shaft tube (32) so as to absorb the corresponding filtered substance.

2. The industrial sewage heavy metal stirring, adsorbing and filtering device according to claim 1, wherein the quantitative water diversion component (23) comprises a water diversion pipe (231) connected with the side wall of the water inlet pipe (22) in a penetrating manner, a water blocking platform (232) arranged on the inner wall of the water diversion pipe (231), a floating plate (233) arranged on the top of the water diversion pipe (231), a water blocking ball (235) arranged in the water inlet pipe (22) and connected with the floating plate (233) through a connecting rod (234), and a return spring (236) with two ends respectively connected with the bottom of the water blocking platform (232) and the top of the water blocking ball (235).

3. The industrial sewage heavy metal stirring, absorbing and filtering device as claimed in claim 1, wherein the timing electrolysis component (24) comprises a support frame (241) arranged at the top of the treatment tank (21), an electrolysis rod (242) arranged at the bottom of the support frame (241), a laser emitter (243) and a laser receiver (244), and the laser receiver (244) is connected with the bottom of the support frame (241) through an extension column (245).

4. The industrial sewage heavy metal stirring, absorbing and filtering device as claimed in claim 1, wherein the drain member (25) comprises a drain plate (251) with one end hinged to the bottom of the treatment tank (21), an annular frame (252) arranged at the bottom of the drain plate (251), a cylinder (253) arranged on the inner wall of the elemental metal filtering chamber (11), and a driving rod (254) arranged at the execution end of the cylinder (253) and slidably connected with the inner wall of the annular frame (252).

5. The industrial sewage heavy metal stirring, adsorbing and filtering device according to claim 1, wherein the rotating lifting component (31) comprises a plurality of hydraulic cylinders (311) arranged at the bottom of the treatment tank (10), a lifting plate (312) arranged at the execution end of the hydraulic cylinders (311), and a driving motor (313) arranged on the lifting plate (312), the side wall of the shaft tube (32) is rotatably connected with the lifting plate (312), the output end of the driving motor (313) is connected with a first gear (314), and the first gear (314) is in gear fit connection with a second gear (315) sleeved on the outer wall of the shaft tube (32).

6. The industrial sewage heavy metal stirring, adsorbing and filtering device according to claim 1, wherein the lifting impurity filtering part (13) comprises a first filtering pipe (131) arranged at the bottom of the inner cavity of the elemental metal filtering chamber (11), a second filtering pipe (132) slidably connected to the inner wall of the first filtering pipe (131) and having a top portion penetrating through the first filtering pipe (131) and extending to the outside, and the side wall of the shaft pipe (32) is rotatably connected to the top portion of the second filtering pipe (132).

7. The industrial sewage heavy metal stirring, adsorbing and filtering device according to claim 1, wherein the simple substance suction part (33) comprises a plurality of L-shaped simple substance suction pipes (331) which are communicated with the top of the side wall of the shaft pipe (32) and are distributed in a circular array.

8. The industrial sewage heavy metal stirring, adsorbing and filtering device according to claim 1, wherein the filtrate removing part (35) comprises an outer cover plate (351) penetrating through the shaft tube (32) and sleeved outside the filter disc (34), a plurality of funnel sewage suction heads (352) communicating with the top of the outer cover plate (351), and a hose (353) having two ends respectively communicating with the top end of the funnel sewage suction head (352) and the side wall of the shaft tube (32).

9. The industrial sewage heavy metal stirring, absorbing and filtering device as claimed in claim 8, wherein the outer cover plate (351) is provided at the bottom with an opening and closing member (354), the opening and closing member (354) comprises a positioning plate (3541) connected with the outer wall of the shaft tube (32), and a driving cylinder (3542) arranged at the bottom of the positioning plate (3541) and having an actuating end connected with the side wall of the outer cover plate (351).

10. The industrial sewage heavy metal stirring, adsorbing and filtering device according to claim 5, wherein the negative pressure component (36) comprises a negative pressure pipe (361) sleeved on the inner wall of the shaft tube (32), an electric cylinder (362) arranged at the bottom of the lifting plate (312) and having an execution end connected with the side wall of the negative pressure pipe (361), and a gas leakage positioning block (363) arranged on the inner wall of the shaft tube (32), wherein the side wall of the negative pressure pipe (361) is arranged on the sewage suction hole (3611) and the filtrate suction hole (3612), and a sealing block (364) used for sealing the top end of the negative pressure pipe (361) is arranged at the bottom of the gas leakage positioning block (363).

Background

The elements such as arsenic, chromium, mercury, lead and the like and compounds thereof in the heavy metal wastewater can be collected by plants, fishes and the like in the wastewater and are transmitted along a food chain, and finally serious threats are brought to the human health and the survival and development of other organisms, so that the treatment of the heavy metal wastewater needs to be enhanced.

According to the industrial sewage treatment heavy metal removal filter equipment that patent document that application number is CN201820348099.8 provided, this product includes organism, first filter chamber, second filter chamber and erects the filter screen, and organism one side is provided with the sewage import, and the inside solid-liquid separation room that is provided with of organism, the interior mechanical grid that installs of solid-liquid separation room, and the mechanical grid below installs the liquid outlet, and the liquid outlet below is provided with the drip chamber, and the drip chamber internally mounted has the mud pump, first filter chamber sets up in drip chamber one side, and the inside interlude of first filter chamber has the electrolysis stick, and electrolysis stick one side installs the air-blower, the inside filtration membrane bucket that is provided with of first filter chamber, and filtration membrane bucket inside is provided with the motor. The discharge roller of the product can control the rotation speed of the discharge roller under the action of the motor, so that raw materials can be regularly and quantitatively put in.

The product in the above-mentioned patent is convenient for put in the raw materials at regular time and quantity, but the heavy metal among the sewage of not being convenient for is electrolytic reduction fast to become the metal simple substance, is not convenient for control reaction time according to heavy metal content in the sewage, and is not convenient for concentrate the recovery to the metal simple substance.

Disclosure of Invention

The invention mainly provides an industrial sewage heavy metal stirring, adsorbing and filtering device, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the heavy metal stirring, adsorbing and filtering device for the industrial sewage comprises a treatment box and an electrolytic cell arranged at the top of the treatment box, wherein the treatment box is internally divided into a metal simple substance filtering cavity and a metal ion chelating cavity by a partition plate from top to bottom;

metal simple substance rose cavity inner chamber bottom is equipped with lift and strains miscellaneous part, it is equipped with the stirring dirt absorbing device to handle the bottom half, the stirring dirt absorbing device is including locating the rotation elevating part who handles the bottom half, locates rotate elevating part execution end and top and run through metal ion chelate chamber, lift and strain miscellaneous part in proper order and extend to the central siphon in the metal simple substance rose cavity, and the simple substance at intercommunication central siphon lateral wall top absorbs the part, locate the metal ion chelate intracavity and with the filter disc of central siphon intercommunication, locate on the central siphon outer wall and the cover locate the outside filth of filter disc and absorb the part, and locate central siphon bottom and execution end extend to the intraductal negative pressure part of central siphon, the negative pressure part is arranged in through central siphon and simple substance absorb one intercommunication in part, filter disc and the filth absorption part to the filth suction that will correspond.

Preferably, the quantitative water diversion component comprises a water diversion pipe which is connected with the side wall of the water inlet pipe in a penetrating way, a water retaining platform which is arranged on the inner wall of the water diversion pipe, a floating plate which is arranged at the top of the water diversion pipe, a water retaining ball which is arranged in the water inlet pipe and is connected with the floating plate through a connecting rod, and a reset spring of which the two ends are respectively connected with the bottom of the water retaining platform and the top of the water retaining ball. In the preferred embodiment, the quantitative water diversion component is used for facilitating the introduction of quantitative sewage from the water inlet pipe for electrolytic treatment, so that the sewage electrolysis can reach the highest efficiency.

Preferably, the timing electrolysis part comprises a support frame arranged at the top of the treatment tank, an electrolysis rod arranged at the bottom of the support frame, a laser emitter and a laser receiver, and the laser receiver is connected with the bottom of the support frame through an extension column. In the preferred embodiment, the timing electrolysis component is convenient for judging the content of the heavy metals in the sewage according to the relation between the reduction precipitation amount of the heavy metals in the sewage and the time, so that the electrolysis time can be reasonably controlled.

Preferably, the water draining component comprises a water draining plate, an annular frame, an air cylinder and a driving rod, wherein one end of the water draining plate is hinged to the bottom of the treatment pool, the annular frame is arranged at the bottom of the water draining plate, the air cylinder is arranged on the inner wall of the metal simple substance filtering cavity, and the driving rod is arranged at the execution end of the air cylinder and is connected with the inner wall of the annular frame in a sliding mode. In the preferred embodiment, the drainage component is used for facilitating the drainage of the sewage after the electrolysis of the treatment tank into the elemental metal filter cavity.

Preferably, rotate the lifting unit including locating a plurality of pneumatic cylinders of processing bottom of the case portion locate the lifter plate of pneumatic cylinder execution end, and locate driving motor on the lifter plate, the lifter plate is connected in the rotation of central siphon lateral wall, first gear is connected to the driving motor output, the second gear of axle pipe outer wall is established to first gear and gear cooperation connection cover. In the preferred embodiment, the stable rotation and lifting of the shaft tube are achieved by rotating the lifting member.

Preferably, go up and down to strain miscellaneous part including locating the first filter tube of metal simple substance filter chamber inner chamber bottom, the first filter tube inner wall of sliding connection and top run through first filter tube and extend to outside second filter tube, the central siphon lateral wall rotates and connects second filter tube top. In the preferred embodiment, the impurity filtering part is lifted to adjust the filtering area according to the sewage quantity.

Preferably, the simple substance suction part comprises a plurality of L-shaped simple substance sewage suction pipes which are communicated with the top of the side wall of the shaft pipe and are distributed in a circular array. In the preferred embodiment, the simple substance sucking component is used for sucking out the simple substance of the metal filtered out by the lifting impurity filtering component.

Preferably, the filter material removing part comprises an outer cover plate which is arranged on the outer portion of the filter disc in a penetrating mode and sleeved with the shaft tube, a plurality of funnel sewage suction heads which are communicated with the top of the outer cover plate, and hoses with two ends respectively communicated with the top ends of the funnel sewage suction heads and the side wall of the shaft tube. In the preferred embodiment, the metal chelate compound filtered out by the filter disc is sucked out by the filtrate sucking-off member.

Preferably, the bottom of the outer cover plate is provided with an opening and closing component, the opening and closing component comprises a positioning plate connected with the outer wall of the shaft pipe and a driving cylinder arranged at the bottom of the positioning plate and connected with the side wall of the outer cover plate at an execution end. In the preferred embodiment, the filter disc is sealed when the opening and closing part realizes metal chelation, and the filter disc is opened when chelate is filtered.

Preferably, the negative pressure part is located including the negative pressure pipe of cover establishing central siphon inner wall the electronic jar of negative pressure pipe lateral wall is connected to lifter plate bottom and execution end, and locates the gas leakage locating piece of central siphon inner wall, the negative pressure pipe lateral wall is located sewage and is inhaled the hole and the filth is inhaled the hole, gas leakage locating piece bottom is equipped with the sealed piece that is used for sealed negative pressure pipe top. In the preferred embodiment, the negative pressure component can be communicated with any one of the simple substance suction component, the filter disc and the filtered substance suction component to suck out the corresponding filtered substance, so that fixed-point discharge is realized.

Compared with the prior art, the invention has the beneficial effects that:

the filtering device is convenient for rapidly electrolyzing and reducing heavy metals in the sewage into metal simple substances, controlling the reaction time according to the content of the heavy metals in the sewage, and performing centralized recovery on the metal simple substances, thereby facilitating the thorough removal of the heavy metals in the sewage;

the quantitative water diversion component is convenient for introducing quantitative sewage from the water inlet pipe for electrolytic treatment, so that the sewage electrolysis can reach the highest efficiency, the timing electrolysis component is convenient for judging the content of heavy metals in the sewage according to the relation between the reduction precipitation amount of the heavy metals in the sewage and the time, so that the electrolysis time can be reasonably controlled, the water drainage component is convenient for discharging the sewage after the electrolysis of the treatment tank into the metal elementary substance filter cavity, the lifting impurity filtering component is convenient for adjusting the filtering area according to the sewage amount, the lifting component is rotated to realize the stable rotation and lifting of the shaft pipe, the elementary substance absorbing component is convenient for absorbing the metal elementary substance filtered by the lifting impurity filtering component, the filter disc is convenient for absorbing the metal chelate filtered by the filter disc, the opening and closing component is used for sealing the filter disc when the metal chelate is filtered, the negative pressure component can be communicated with the elementary substance absorbing component, Any one of the filter disc and the filtered object suction part is used for sucking out the corresponding filtered object to realize fixed-point discharge.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is an isometric view of the overall construction of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is an exploded view of the internal structure of the treatment tank of the present invention;

FIG. 4 is an isometric view of the stirring and dirt-sucking device of the present invention;

FIG. 5 is an exploded view of the stirring dirt-suction device of the present invention;

FIG. 6 is a cross-sectional view of the overall construction of the present invention;

FIG. 7 is a sectional view showing the internal structure of the treatment tank of the present invention;

FIG. 8 is an enlarged view of the structure at A of the present invention.

Description of the drawings: 10. a treatment tank; 11. a metal simple substance filter cavity; 12. a metal ion chelation chamber; 13. a lifting impurity filtering component; 131. a first filtering pipe; 132. a second filtering pipe; 20. an electrolytic cell; 21. a treatment tank; 22. a water inlet pipe; 23. a quantitative water diversion component; 231. a water conduit; 232. a water retaining platform; 233. a floating plate; 234. a connecting rod; 235. a water blocking ball; 236. a return spring; 24. a timed electrolysis component; 241. a support frame; 242. an electrolytic rod; 243. a laser transmitter; 244. a laser receiver; 245. extending the column; 25. a water discharge member; 251. a drain plate; 252. an annular frame; 253. a cylinder; 254. a drive rod; 30. a stirring and dirt absorbing device; 31. rotating the lifting member; 311. a hydraulic cylinder; 312. a lifting plate; 313. a drive motor; 314. a first gear; 315. a second gear; 32. an axle tube; 33. a simple substance gettering member; 331. an L-shaped simple substance sewage suction pipe; 34. a filter disc; 35. a filtrate adsorbing member; 351. an outer cover plate; 352. a funnel dirt suction head; 353. a hose; 354. an opening and closing member; 3541. positioning a plate; 3542. a drive cylinder; 36. a negative pressure member; 361. a negative pressure tube; 3611. a sewage suction hole; 3612. a filtrate extraction orifice; 362. an electric cylinder; 363. a gas leakage positioning block; 364. and (6) sealing the block.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1, 2, 3, 6, and 8, in a preferred embodiment of the present invention, the heavy metal stirring, adsorbing and filtering apparatus for industrial wastewater includes a processing box 10 and an electrolytic cell 20 disposed on the top of the processing box 10, the processing box 10 is divided into a metal simple substance filtering chamber 11 and a metal ion chelating chamber 12 by a partition plate from top to bottom, the electrolytic cell 20 is divided into a plurality of processing cells 21 by a baffle plate, water inlet pipes 22 sequentially penetrating through the plurality of processing cells 21 are disposed on the sidewall of the electrolytic cell 20, a quantitative water diversion component 23 connected to the water inlet pipes 22 is disposed in the processing cell 21, a timing electrolytic component 24 is disposed on the top of the processing cell 21, and a water drainage component 25 for discharging electrolyzed wastewater into the metal simple substance filtering chamber 11 is disposed on the bottom of the processing cell 21; the quantitative water diversion component 23 comprises a water diversion pipe 231 which is connected with the side wall of the water inlet pipe 22 in a penetrating way, a water retaining platform 232 which is arranged on the inner wall of the water diversion pipe 231, a floating plate 233 which is arranged on the top of the water diversion pipe 231, a water retaining ball 235 which is arranged in the water inlet pipe 22 and is connected with the floating plate 233 through a connecting rod 234, and a return spring 236 whose two ends are respectively connected with the bottom of the water-blocking table 232 and the top of the water-blocking ball 235, the timing electrolysis component 24 comprises a support frame 241 arranged at the top of the treatment tank 21, an electrolysis rod 242 arranged at the bottom of the support frame 241, a laser emitter 243 and a laser receiver 244, the laser receiver 244 is connected with the bottom of the supporting frame 241 through an extending column 245, the water drainage component 25 comprises a water drainage plate 251 with one end hinged with the bottom of the treatment tank 21, an annular frame 252 arranged at the bottom of the water drainage plate 251, an air cylinder 253 arranged on the inner wall of the metal simple substance filtering cavity 11, and a driving rod 254 provided at an execution end of the cylinder 253 and slidably coupled to an inner wall of the annular frame 252.

It should be noted that, in this embodiment, during treatment, sewage may be introduced into the water inlet pipe 22, the sewage enters the treatment tank 21 quantitatively after passing through the quantitative water diversion component 23, at this time, the electrolysis rod 242 electrolyzes the sewage, heavy metals in the sewage are reduced to metal simple substances and separated out from the sewage, the laser emitter 243 emits light to the sewage, the laser receiver 244 in the sewage receives the scattered light and transmits scattering data to the PLC controller, the PLC controller obtains the amount of separated metal simple substances by calculating the scattering data, and uses the amount of separated metal simple substances as a vertical coordinate and time as a horizontal coordinate to draw a function curve, the water discharge component 25 is opened when the curve change rate is smaller than a set value, and after the sewage is discharged, new sewage enters the treatment tank 21 through the quantitative water diversion component 23;

further, when the quantitative water diversion component 23 works, sewage enters the treatment tank 21 through the water diversion pipe 231, the floating plate 233 moves upwards under the action of buoyancy and drives the water blocking ball 235 to move upwards through the connecting rod 234 to contact the water blocking platform 232 along with the rise of the liquid level, the water diversion pipe 231 is blocked to finish quantitative water diversion, after the sewage is discharged, the return spring 236 drives the water blocking ball 235 to move downwards, and new sewage can enter the treatment tank 21 through the water diversion pipe 231;

further, when the water draining part 25 works, the air cylinder 253 drives the driving rod 254 to move downwards, the driving rod 254 slides in the annular frame 252, and the annular frame 252 drives the water draining plate 251 to rotate around the hinged position of the water draining plate, so that water draining can be performed.

Referring to fig. 3-6, in another preferred embodiment of the present invention, the bottom of the inner cavity of the elemental metal filter chamber 11 is provided with a lifting impurity filtering component 13, the bottom of the treatment chamber 10 is provided with a stirring and dirt-absorbing device 30, the stirring and dirt-absorbing device 30 includes a rotating lifting component 31 disposed at the bottom of the treatment chamber 10, a shaft tube 32 disposed at the execution end of the rotating lifting component 31 and having a top end sequentially penetrating through the metal ion chelating chamber 12, the lifting impurity filtering component 13 and extending into the elemental metal filter chamber 11, and an elemental metal absorbing component 33 communicating with the top of the side wall of the shaft tube 32, the rotating lifting component 31 includes a plurality of hydraulic cylinders 311 disposed at the bottom of the treatment chamber 10, a lifting plate 312 disposed at the execution end of the hydraulic cylinders 311, and a driving motor 313 disposed on the lifting plate 312, the side wall of the shaft tube 32 is rotatably connected to the lifting plate 312, the output end of the driving motor 313 is connected to a first gear 314, first gear 314 gear cooperation is connected the second gear 315 of establishing central siphon 32 outer wall of cover, the miscellaneous part 13 is strained including locating the first filter tube 131 of 11 inner chambers bottoms of elemental metal filter chambers in the lift, and first filter tube 131 inner wall of sliding connection and top run through first filter tube 131 and extend to outside second filter tube 132, central siphon 32 lateral wall rotates and connects second filter tube 132 top, elemental suction part 33 is including the intercommunication central siphon 32 lateral wall top just is a plurality of L shape elemental suction pipes 331 that circular permutation distributes.

It should be noted that, in this embodiment, the sewage after the electrolysis in the treatment tank 21 enters the metal simple substance filtering cavity 11, the lifting impurity filtering part 13 can be driven by the shaft tube 32 to lift, so as to increase the filtering area, the filtered metal simple substance can be discharged through the L-shaped simple substance sewage suction pipe 331, and the filtered sewage enters the metal ion chelating cavity 12 through a pipeline;

further, when the hydraulic cylinder 311 is turned on, the hydraulic cylinder 311 can drive the axle tube 32 to lift through the lifting plate 312, the axle tube 32 can drive the second filter tube 132 to move upward to increase the filtering area, the driving motor 313 is turned on, and the driving motor 313 drives the axle tube 32 to rotate through the first gear 314 and the second gear 315.

Referring to fig. 4-7, in another preferred embodiment of the present invention, a filter disc 34 disposed in the metal ion chelating cavity 12 and communicated with the shaft tube 32, a filtrate removing member 35 disposed on an outer wall of the shaft tube 32 and sleeved outside the filter disc 34, and a negative pressure member 36 disposed at a bottom of the shaft tube 32 and having an execution end extending into the shaft tube 32, wherein the negative pressure member 36 is used to communicate with one of the simple substance removing member 33, the filter disc 34, and the filtrate removing member 35 through the shaft tube 32 to remove a corresponding filtrate, the filtrate removing member 35 includes an outer cover plate 351 disposed through the shaft tube 32 and sleeved outside the filter disc 34, a plurality of funnel soil-absorbing heads 352 communicating with a top of the outer tube 351, and a hose 353 having two ends respectively communicating with a top end of the funnel soil-absorbing head 352 and a side wall of the shaft tube 32, the outer cover plate 351 has an opening and closing member 354 at a bottom thereof, the opening and closing member 354 includes a positioning plate 3541 connected with an outer wall of the shaft tube 32, and locate locating plate 3541 bottom and execution end connect the actuating cylinder 3542 of outer cover plate 351 lateral wall, negative pressure part 36 is including the negative pressure pipe 361 that the central siphon 32 inner wall was established to the cover, locate the electric jar 362 of the negative pressure pipe 361 lateral wall is connected to lifter plate 312 bottom and execution end, and locate the gas leakage locating piece 363 of central siphon 32 inner wall, sewage suction hole 3611 and filth suction hole 3612 are located to negative pressure pipe 361 lateral wall, gas leakage locating piece 363 bottom is equipped with the seal block 364 that is used for sealing negative pressure pipe 361 top.

It should be noted that, in this embodiment, the sewage treated by the metal simple substance filtering chamber 11 enters the metal ion chelating chamber 12, a metal chelating agent can be added into the metal ion chelating chamber 12 through the metal chelating agent adding pipe, the outer cover plate 351 is driven by the shaft pipe 32 to rotate to stir the sewage, so as to be convenient for uniform chelating, after the chelating is completed, the driving cylinder 3542 drives the outer cover plate 351 to move upwards, the negative pressure component 36 is communicated with the filtering disc 34 to suck out the purified sewage, after the completion, the driving cylinder 3542 drives the outer cover plate 351 to reset, the negative pressure component 36 is switched to be communicated with the hose 353, and the chelated metal filter is discharged after passing through the funnel sewage suction head 352, the hose 353 and the negative pressure component 36;

further, when the negative pressure component 36 works, the negative pressure pipe 361 is driven by the electric cylinder 362 to move, and can be switched into three negative suction states during movement, wherein the first negative suction state is that the sewage suction hole 3611 is communicated with the filter disc 34, the rest positions are sealed, purified sewage is discharged through the negative pressure pipe 361, the second negative suction state is that the filtrate suction hole 3612 is communicated with the hose 353, the rest positions are sealed, chelated metal filtrate is discharged through the negative pressure pipe 361, the third negative suction state is that the sealing block 364 leaves the negative pressure pipe 361, the rest positions are sealed, and metal simple substances are discharged through the negative pressure pipe 361.

The specific process of the invention is as follows:

the PLC controller is in a model number of '1769-OW 16'.

When in treatment, sewage can be led into the water inlet pipe 22, the sewage quantitatively enters the treatment tank 21 after passing through the quantitative water diversion part 23, at the moment, the electrolysis rod 242 electrolyzes the sewage, heavy metals in the sewage are reduced into metal simple substances and separated out from the sewage, the laser emitter 243 emits light rays into the sewage, the laser receiver 244 in the sewage receives the scattered light rays and transmits scattered data to the PLC, the PLC calculates the scattered data to obtain the separated amount of the metal simple substances, the separated amount of the metal simple substances is taken as a vertical coordinate, time is taken as a horizontal coordinate to draw a function curve, the water drainage part 25 is opened when the curve change rate is smaller than a set value, and after the sewage is discharged, new sewage enters the treatment tank 21 through the quantitative water diversion part 23;

when the quantitative water diversion component 23 works, sewage enters the treatment tank 21 through the water diversion pipe 231, the floating plate 233 moves upwards under the action of buoyancy and drives the water blocking ball 235 to move upwards through the connecting rod 234 to contact the water blocking platform 232 along with the rise of the liquid level, the water diversion pipe 231 is blocked to finish quantitative water diversion, after the sewage is discharged, the return spring 236 drives the water blocking ball 235 to move downwards, and new sewage can enter the treatment tank 21 through the water diversion pipe 231;

when the water draining component 25 works, the air cylinder 253 drives the driving rod 254 to move downwards, the driving rod 254 slides in the annular frame 252, and the annular frame 252 drives the water draining plate 251 to rotate around the hinged position of the water draining plate, so that water draining can be performed;

the sewage after the electrolysis in the treatment tank 21 enters the metal simple substance filtering cavity 11, the lifting impurity filtering part 13 can be driven by the shaft tube 32 to lift so as to increase the filtering area, the filtered metal simple substance can be discharged through the L-shaped simple substance sewage suction pipe 331, and the filtered sewage enters the metal ion chelating cavity 12 through a pipeline;

the hydraulic cylinder 311 is started, the hydraulic cylinder 311 can drive the axle tube 32 to lift through the lifting plate 312, the axle tube 32 can drive the second filter tube 132 to move upwards when rising, so as to increase the filter area, the driving motor 313 is started, and the driving motor 313 drives the axle tube 32 to rotate through the first gear 314 and the second gear 315;

the sewage treated by the metal simple substance filtering cavity 11 enters the metal ion chelating cavity 12, a metal chelating agent can be added into the metal ion chelating cavity 12 through a metal chelating agent adding pipe, the outer cover plate 351 is driven by the shaft pipe 32 to rotate to stir the sewage, uniform chelating is facilitated, after the chelating is completed, the driving cylinder 3542 drives the outer cover plate 351 to move upwards, the negative pressure part 36 is communicated with the filter disc 34 to suck out the purified sewage, after the completion, the driving cylinder 3542 drives the outer cover plate 351 to reset, the negative pressure part 36 is switched to be communicated with the hose 353, and the chelated metal filter is discharged after passing through the funnel sewage suction head 352, the hose 353 and the negative pressure part 36;

when the negative pressure component 36 works, the negative pressure pipe 361 moves under the driving of the electric cylinder 362, and can be switched into three negative suction states during movement, wherein the first negative suction state is that the sewage suction hole 3611 is communicated with the filter disc 34, the rest positions are sealed, the purified sewage is discharged through the negative pressure pipe 361, the second negative suction state is that the filtrate suction hole 3612 is communicated with the hose 353, the rest positions are sealed, the chelated metal filtrate is discharged through the negative pressure pipe 361, the third negative suction state is that the sealing block 364 leaves the negative pressure pipe 361, the rest positions are sealed, and the metal simple substance is discharged through the negative pressure pipe 361.

The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.