1. A spool valve type relief and check valve comprising a valve body (1), characterized in that: the inner wall of the valve body (1) is fixedly connected with a bottom plate (2), the upper surface of the bottom plate (2) is provided with two liquid outlet holes (4), the upper surface of the bottom plate (2) is fixedly connected with a partition plate (3), the left side and the right side of the partition plate (3) are fixedly connected with elastic pieces (7), and one end, far away from the partition plate (3), of each elastic piece (7) is fixedly connected with a pushing piece; the upper surface of the valve body (1) is fixedly connected with a branch pipe (16), and the surface of the branch pipe (16) is fixedly connected with a primary valve (17) and a secondary valve (18) respectively.

2. A spool-type relief and check valve according to claim 1, characterized in that: the surface of the branch pipe (16) is fixedly connected with a liquid inlet pipe (15), and the liquid inlet pipe (15) is made of stainless steel.

3. A spool-type relief and check valve according to claim 1, characterized in that: the valve is characterized in that the upper surface and the lower surface of the valve body (1) are fixedly connected with fixing feet (12), the left side of each fixing foot (12) is provided with a fixing hole (13), and the inner wall of each fixing hole (13) is inserted with a threaded rod (14).

4. A spool-type relief and check valve according to claim 1, characterized in that: the lower surface fixedly connected with drain pipe (19) of valve body (1), the inner diapire of valve body (1) is run through on the top of drain pipe (19).

5. A spool-type relief and check valve according to claim 1, characterized in that: the push piece comprises a first-stage push plate (5) and a second-stage push plate (6), a liquid storage cavity is formed in the first-stage push plate (5), volatile liquid is filled in the liquid storage cavity, and the first-stage push plate (5) and the second-stage push plate (6) are identical in structure.

6. A spool-type relief and check valve according to claim 1, characterized in that: the elastic part (7) is divided into an upper elastic part and a lower elastic part, the upper elastic part comprises an arc-shaped supporting part (703), the arc-shaped supporting part (703) is composed of a plurality of round bars, the outer surface of the arc-shaped supporting part (703) is sleeved with an air bag (702), the material of the air bag (702) is the same as that of the balloon, the air bag (702) is divided into an inner layer and an outer layer, the inner layer and the outer layer of the air bag (702) are connected through an elastic connecting sheet (704), the inner layer of the air bag (702) is fixedly connected with the arc-shaped supporting part (703), the outer layer of the air bag (702) is sleeved with a hoop (701), the hoop (701) is provided with a plurality of hoops, the hoop (701) is made of the same material as a rubber band, the structures of the upper elastic part and the lower elastic part are the same, and the air bag (702) is connected with a reversing valve through a hose; one end of the arc-shaped supporting piece (703) is fixedly connected with the push plate piece, the other end of the arc-shaped supporting piece (703) is abutted against the partition plate (3), and the elastic pieces (7) are symmetrically arranged at the left end and the right end of the partition plate (3).

7. A spool-type relief and check valve according to claim 6, characterized in that: the reversing valve comprises a first electromagnetic reversing valve (8) and a second electromagnetic reversing valve (9), the first electromagnetic directional valve (8) and the second electromagnetic directional valve (9) are respectively connected with air outlet holes at the upper ends of one sides of the second-stage push plate (6) and the first-stage push plate (5), the first electromagnetic directional valve (8) and the second electromagnetic directional valve (9) are respectively connected with a first reflux box (11) and a second reflux box (10) which are positioned at the upper ends of one sides of the second-stage push plate (6) and the first-stage push plate (5), the first reflux box (11) and the second reflux box (10) are respectively connected with the liquid inlets on the second-stage push plate (6) and the first-stage push plate (5) through one-way valves, the two electromagnetic directional valves (9) are electrically connected with the first-stage valve (17) and the controller, the first electromagnetic directional valve (8) is electrically connected with the second-stage valve (18) and the controller.

Background

The overflow valve is a hydraulic pressure control valve, mainly plays the roles of constant pressure overflow, pressure stabilization, system unloading and safety protection in hydraulic equipment, and can cause unnecessary external leakage due to the damage of an O-shaped sealing ring and a combined sealing ring or the loosening of an installation screw and a pipe joint when the overflow valve is assembled or used.

However, the existing overflow valves are mostly used for containers of chemical plants, and do not have a division function, and the containers may be shaken when the pipelines connected with the tail of the liquid outlet pipe are pulled out and the containers are moved, so that liquid in the containers is extruded out of the valves, and the consequences of dangerous liquid such as corrosivity and the like if people touch the flowing liquid are unreasonable. Accordingly, those skilled in the art have provided a spool type relief and check valve to solve the problems set forth in the background art as described above.

Disclosure of Invention

The invention aims to provide a slide valve type one-way overflow valve, which aims to solve the problems that an overflow valve on a container of a conventional chemical plant does not have a function of division, and the container is likely to shake when a pipeline connected with a tail of a liquid outlet pipe is pulled out and the container is moved, so that liquid in the container is extruded out of a valve, and people are likely to touch dangerous liquid.

In order to achieve the purpose, the invention provides the following technical scheme:

a sliding valve type one-way overflow valve comprises a valve body, wherein a bottom plate is fixedly connected to the inner wall of the valve body, two liquid outlet holes are formed in the upper surface of the bottom plate, a partition plate is fixedly connected to the upper surface of the bottom plate, elastic pieces are fixedly connected to the left side and the right side of the partition plate, and a pushing piece is fixedly connected to one end, away from the partition plate, of each elastic piece; the upper surface fixed connection of valve body has the bleeder, the surface of bleeder is fixedly connected with one-level valve and second grade valve respectively.

As a still further scheme of the invention: the surface of the branch pipe is fixedly connected with a liquid inlet pipe, and the liquid inlet pipe is made of stainless steel.

As a still further scheme of the invention: the valve body is characterized in that the upper surface and the lower surface of the valve body are fixedly connected with fixing feet, fixing holes are formed in the left sides of the fixing feet, and threaded rods are inserted into the inner walls of the fixing holes.

As a still further scheme of the invention: the lower surface fixedly connected with drain pipe of valve body, the interior diapire of valve body is run through on the top of drain pipe.

As a still further scheme of the invention: the impeller comprises a first-stage push plate and a second-stage push plate, a liquid storage cavity is arranged in the first-stage push plate, volatile liquid is filled in the liquid storage cavity, and the first-stage push plate and the second-stage push plate are identical in structure.

As a still further scheme of the invention: the elastic part is divided into an upper elastic part and a lower elastic part, the upper elastic part comprises an arc-shaped supporting part, the arc-shaped supporting part consists of a plurality of round bars, the outer surface of the arc-shaped supporting part is fixedly sleeved with a bag, the outer surface of the bag is uniformly sleeved with a hoop, the hoop is provided with a plurality of hoops, the upper elastic part and the lower elastic part have the same structure, and the bag is connected with a reversing valve through a hose; the clamp is made by rubber and latex, arc support piece's one end and push pedal spare fixed connection, arc support piece's the other end and baffle are inconsistent, elastic component symmetrical arrangement is both ends about the baffle.

As a still further scheme of the invention: the change-over valve includes an electromagnetic directional valve and No. two electromagnetic directional valves, an electromagnetic directional valve and No. two electromagnetic directional valves respectively with be located the venthole connection of one side upper end of second grade push pedal and one-level push pedal, an electromagnetic directional valve and No. two electromagnetic directional valves respectively with be located the one number of backward flow box and No. two backward flow box of one side upper end of second grade push pedal and one-level push pedal and be connected, a backward flow box and No. two backward flow box pass through the check valve with second grade push pedal and one-level push pedal respectively and are connected, two electromagnetic directional valves are connected with one-level valve and controller electricity, an electromagnetic directional valve is connected with second grade valve and controller electricity.

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

1. according to the invention, the primary spring is arranged for resetting the primary push plate, the division function of the valve body is realized by arranging the primary valve and the secondary valve to open and close, the primary valve is opened for pressure relief of dangerous liquid, the secondary valve is opened for pressure relief of common liquid, and the friction force between the primary push plate and the inner wall of the valve body is increased by arranging the weight by utilizing the lever principle, so that the situation that the dangerous liquid extrudes the primary push plate in the moving process and cannot be leaked is ensured, and therefore, the problems that the existing overflow valve has no division function, the liquid is easy to extrude out of the valve when a container is moved, and people easily touch the dangerous liquid are solved.

2. In the invention, the liquid inlet pipe is arranged for connecting the container, and liquid in the container is discharged when the hydraulic pressure is too high; the secondary push plate is arranged to push the secondary push plate to release pressure leftwards when the hydraulic pressure of common liquid is too high, and the secondary spring is used for resetting the secondary push plate; by providing the seal ring for sealing the valve body, liquid leakage is prevented.

3. In the invention, the valve body can be fixed on the container by arranging the fixing feet and the threaded rod; the liquid outlet pipe is used for leading out liquid flowing out when the hydraulic pressure is too high; through setting up one-level push pedal and second grade push pedal, guarantee that liquid pushes away one-level push pedal and second grade push pedal and slides on the inner wall of valve body when hydraulic pressure is too big.

4. According to the invention, the volatile liquid is arranged in the liquid storage cavity, when high-temperature liquid flows into the valve body, the volatile liquid can quickly form gas, and then the air bag is inflated; the arc-shaped supporting piece is arranged to maintain the shape of the air bag; the air bag is arranged to store the gas volatilized from the liquid storage cavity in the pushing piece and collect the liquid condensed by the gas; the clamp is arranged to prevent the air bag from being deformed in an unoriented manner in the inflating process; through setting up a backward flow box and No. two backward flow boxes, form liquid after the volatile gaseous condensation in the inside stock solution chamber of impeller, the resilience force through clamp and gasbag itself squeezes liquid back to the stock solution chamber of the inside of a backward flow box and No. two backward flow boxes, and the liquid that originally stores in a backward flow box and No. two backward flow boxes gets into the inside stock solution chamber of impeller under the extrusion.

5. The reversing valve is controlled by the controller by controlling the opening and closing of the first-stage valve and the second-stage valve so as to accurately inflate the air bag.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the valve body according to the present invention;

FIG. 3 is a schematic sectional view of the valve body according to the present invention;

FIG. 4 is an exploded view of a portion of the structure of the present invention;

FIG. 5 is a front cross-sectional view of the valve body of the present invention;

fig. 6 is a sectional view of the elastic member in the present invention.

In the figure: 1. a valve body; 2. a base plate; 3. a partition plate; 4. a liquid outlet hole; 5. a first-stage push plate; 6. a secondary push plate; 7. an elastic member; 701. clamping a hoop; 702. an air bag; 703. an arc-shaped support member; 704. an elastic connecting sheet; 8. a first electromagnetic directional valve; 9. a second electromagnetic directional valve; 10. a second reflow box; 11. a first reflow box; 12. a fixing leg; 13. a fixing hole; 14. a threaded rod; 15. a liquid inlet pipe; 16. a branch pipe; 17. a first-stage valve; 18. a secondary valve; 19. a liquid outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, in an embodiment of the present invention, a sliding valve type one-way overflow valve includes a valve body 1, a bottom plate 2 is fixedly connected to an inner wall of the valve body 1, two liquid outlet holes 4 are formed in an upper surface of the bottom plate 2, a partition plate 3 is fixedly connected to an upper surface of the bottom plate 2, elastic members 7 are fixedly connected to left and right sides of the partition plate 3, and a pushing member is fixedly connected to one end of the elastic member 7 away from the partition plate 3; the upper surface fixed connection of valve body 1 has bleeder 16, the surface of bleeder 16 is fixedly connected with one-level valve 17 and second grade valve 18 respectively, realizes valve body 1's branch function through setting up opening and close of one-level valve 17 and second grade valve 18, and one-level valve 17 is opened and is used for dangerous liquid pressure release, and second grade valve 18 is opened and is used for ordinary liquid pressure release, has solved the problem that present overflow valve does not have the branch function.

In one embodiment, the surface of the branch pipe 16 is fixedly connected with a liquid inlet pipe 15, the liquid inlet pipe 15 is made of stainless steel, and the liquid inlet pipe 15 is used for connecting a container, so that liquid in the container is discharged when the hydraulic pressure is too high.

As one embodiment, the upper surface and the lower surface of the valve body 1 are fixedly connected with fixing legs 12, the left side of the fixing legs 12 is provided with fixing holes 13, the inner wall of the fixing holes 13 is inserted with threaded rods 14, and the valve body 1 can be fixed on a container by arranging the fixing legs 12 and the threaded rods 14.

As one embodiment, a liquid outlet pipe 19 is fixedly connected to the lower surface of the valve body 1, the top end of the liquid outlet pipe 19 penetrates through the inner bottom wall of the valve body 1, and the liquid outlet pipe 19 is used for guiding out liquid flowing out when the hydraulic pressure is too high.

As another embodiment, the pushing member includes a first-stage pushing plate 5 and a second-stage pushing plate 6, a liquid storage cavity is formed in the first-stage pushing plate 5, volatile liquid is filled in the liquid storage cavity, the volatile liquid can be alcohol or acetic acid, the first-stage pushing plate 5 and the second-stage pushing plate 6 are identical in structure, and when the volatile liquid is arranged in the liquid storage cavity, high-temperature liquid flows into the valve body 1 to enable the volatile liquid to quickly form gas, and then the air bag 702 is inflated.

As another embodiment, the elastic member 7 is divided into an upper elastic member and a lower elastic member, the upper elastic member includes an arc-shaped support member 703, the arc-shaped support member 703 is composed of a plurality of round bars, the material of the round bars can be spring steel or the material of a brace used in the current brace jump, the outer surface of the arc-shaped support member 703 is sleeved with an air bag 702, the material of the air bag 702 is the same as that of a balloon, the air bag 702 is divided into an inner layer and an outer layer, the inner layer and the outer layer of the air bag 702 are connected through an elastic connecting sheet 704, the inner layer of the air bag 702 is fixedly connected with the arc-shaped support member 703, the outer layer of the air bag 702 is sleeved with a hoop 701, the hoop 701 is provided with a plurality of hoops, the material of the hoop 701 is the same as that of a; one end of the arc-shaped support 703 is fixedly connected with the push plate member, the other end of the arc-shaped support 703 is abutted against the partition plate 3, and the elastic members 7 are symmetrically arranged at the left end and the right end of the partition plate 3; the arc-shaped supporting piece 703 is arranged to maintain the shape of the air bag 702, the air bag 702 is arranged to store gas volatilized from a liquid storage cavity in the pushing piece and collect liquid after the gas is condensed, and the clamp 701 is arranged to prevent the air bag 702 from being deformed in an unoriented manner in the inflating process.

As another embodiment, the direction changing valve comprises a first electromagnetic direction changing valve 8 and a second electromagnetic direction changing valve 9, the first electromagnetic directional valve 8 and the second electromagnetic directional valve 9 are respectively connected with an air outlet hole at the upper end of one side of the second-stage push plate 6 and the first-stage push plate 5, the first electromagnetic directional valve 8 and the second electromagnetic directional valve 9 are respectively connected with a first reflux box 11 and a second reflux box 10 which are positioned at the upper ends of one sides of the second-stage push plate 6 and the first-stage push plate 5, the first reflux box 11 and the second reflux box 10 are respectively connected with the liquid inlets of the second-stage push plate 6 and the first-stage push plate 5 through one-way valves, the two electromagnetic directional valves 9 are electrically connected with a first-stage valve 17 and a controller, the first electromagnetic directional valve 8 is electrically connected with a second-stage valve 18 and the controller, the reversing valve is controlled by a controller by controlling the opening and closing of the primary valve 17 and the secondary valve 18 so as to accurately inflate the air bag 702; set up a backward flow box 11 and No. two backward flow boxes 10, form liquid after the volatile gas condensation in the inside stock solution chamber of impeller, the resilience force through clamp 701 and gasbag 702 itself will be crowded the stock solution chamber of the inside of a backward flow box 11 and No. two backward flow boxes 10 with liquid, and the liquid that originally stores in a backward flow box 11 and No. two backward flow boxes 10 gets into the inside stock solution chamber of impeller under the extrusion.

The working principle of the invention is as follows: when the high-temperature liquid decompression device is used, when high-temperature liquid is decompressed, a worker firstly fixes the valve body 1 on a container through the threaded rod 14 and the fixing foot 12, then the liquid inlet pipe 15 is communicated with the container, the first-stage valve 17 or the second-stage valve 18 is selected and used according to the type of the liquid stored in the container, if the common high-temperature liquid is stored in the container, the first-stage valve 17 can be closed to open the second-stage valve 18, the first electromagnetic reversing valve 8 is reversed to enable the air bag 702 to be connected with the air outlet hole at the upper end of one side of the second-stage push plate 6, the high-temperature liquid extrudes the second-stage push plate 6 to move leftwards, simultaneously, volatile liquid in the liquid storage cavity inside the second-stage push plate 6 is rapidly volatilized under the heating of the high-temperature liquid to form gas, the gas enters the air bag 702, the expanded air bag 702 increases the pressure on the second-stage push plate 6, the high-temperature liquid pushes the second-stage push plate 6 to slowly move so as to slowly release the liquid, the second electromagnetic directional valve 9 is used for reversing to connect the air bag 702 with the first backflow box 11; if dangerous liquid is stored in the container, the second-stage valve 18 can be closed to open the first-stage valve 17, at the moment, the second electromagnetic directional valve 9 is reversed to enable the air bag 702 to be connected with an air outlet hole at the upper end of one side of the first-stage push plate 5, the high-temperature liquid extrudes the second-stage push plate 5 to move rightwards, simultaneously, the volatile liquid in the liquid storage cavity in the first-stage push plate 5 is heated by the high-temperature liquid to quickly volatilize to form gas, the gas enters the air bag 702, the expanded air bag 702 increases the pressure on the first-stage push plate 5, the high-temperature liquid pushes the first-stage push plate 5 to slowly move to slowly release the liquid, the first electromagnetic directional valve 8 is reversed to enable the air bag 702 to be connected with the second backflow box 10, the gas which is condensed into liquid in the air bag 702 before extrudes the liquid to the second backflow push plate 10 under the resilience force of the clamp 701 and the air bag 702, and the liquid which is originally remained in the second backflow box 10 is extruded to the liquid storage cavity in the first-stage 5 under the resilience force of the clamp 701 and the air bag 702, thereby solved present overflow valve and not possessed the division function, liquid extrudes the valve easily when removing the container, and the people easily bumps the problem of dangerous liquid.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.