1. The utility model provides a laboratory is with high protection fume hood which characterized in that: comprises a show body (1), an adjusting device (2), a ventilating pipe (3), a filter layer (4), a sterilization and disinfection device (5), a cleaning device (6), a protective window (7), a movable door (8), a handle (9), a switch (10), a power cord (11), a ventilating connecting pipe (12) and an operating table (13), wherein the left side of the adjusting device (2) is fixedly connected with the upper end of the right side of the show body (1), the ventilating pipe (3) is arranged in the middle of the top end of the show body (1), the filter layer (4) is arranged in the middle of the ventilating pipe (3), the sterilization and disinfection device (5) is arranged on the left side and the right side of the interior of the show body (1), the cleaning device (6) is arranged at the middle end of the back of the show body (1), the protective window (7) is arranged in the middle of the front side of the show body (1), the movable door (8, switches (10) are arranged at the left end and the right end of the front side of the cabinet body (1), a power line (11) is arranged at the back of the cabinet body (1), a ventilation connecting pipe (12) is arranged at the bottom of the ventilation pipe (3), and an operating table (13) is arranged in the middle of the inner side of the cabinet body (1).

2. The high-protection fume hood for the laboratory according to claim 1, wherein: the adjusting device (2) comprises a first shell (21), a first motor (22), a first supporting rod (23), a second supporting rod (24), an adjusting mechanism (25), a first rotating rod (26), a first connecting rod (27) and a fifth supporting rod (28), the cabinet comprises a cabinet body (1), a first shell (21), a first motor (22), a second support rod (24), a first support rod (23), a first shell (21), a second shell (21), a first rotating rod (26), a first motor (22), a second support rod (24), a second rotating rod (27), a first sliding rod (258), a fifth support rod (28), a fifth shell (21), a second shell and a third shell, wherein the left side of the first shell (21) is fixedly connected with the upper right end of the right side of the first shell, the bottom of the second support rod (24) is fixedly connected with the bottom of the inner side of the first shell (21), an adjusting mechanism (25) is arranged in the middle of the inner side of the first shell (21), the right side of the first rotating rod (26) is rotatably connected with the left side of the first motor (22), the right side of the first connecting rod (27) is welded with the left side of the first sliding rod (258), and the left side of the interior of the fifth support rod (28) is fixedly connected with the first shell (21).

3. The high-protection fume hood for the laboratory according to claim 1, wherein: a first bump (41) is arranged on the contact surface of the filter layer (4) and the ventilation pipe (3).

4. The high-protection fume hood for the laboratory according to claim 1, wherein: the sterilizing and disinfecting device (5) comprises a second shell (51), a tube cap (52) and an ultraviolet lamp tube (53), the left side of the second shell (51) is fixedly connected with the left side inside the cabinet body (1), the top end of the tube cap (52) is fixedly connected with the top of the inner side of the second shell (51), and the ultraviolet lamp tube (53) is arranged at the bottom of the tube cap (52).

5. The high-protection fume hood for the laboratory according to claim 1, wherein: the cleaning device (6) comprises a water tank (61), a second sliding groove (62), a drain pipe (63), a third shell (64), a third supporting rod (65), a fourth supporting rod (66), a limiting sleeve (67), a second motor (68), a rack transmission mechanism (69) and a cleaning cotton rod (610), wherein the water tank (61) is arranged on the left side and the right side of the top end of the operating platform (13), the second sliding groove (62) is arranged at the middle end of the back of the cabinet body (1), the drain pipe (63) is arranged at the bottom of the operating platform (13), the bottom of the third shell (64) is fixedly connected with the middle end of the back of the cabinet body (1), the left side of the third supporting rod (65) is fixedly connected with the upper left end of the inner side of the third shell (64), the bottom of the fourth supporting rod (66) is sleeved with the top end of the limiting sleeve (67), the bottom of the limiting sleeve (67) is fixedly connected with the middle part of the top end of a second gear (697), the middle part of the third shell (64) is provided with a rack transmission mechanism (69), and the top end of the cleaning cotton rod (610) is fixedly connected with the left end of the bottom of the second sliding rod (696).

6. The laboratory high protection fume hood as claimed in claim 2, wherein: the adjusting mechanism (25) comprises a first rotating shaft (251), a second connecting rod (252), a second rotating shaft (253), a disc (254), a first sliding block (255), a second sliding block (256), a first sliding chute (257), a first sliding rod (258) and a limiting block (259), the right side of the first rotating shaft (251) is rotatably connected with the left side of the first rotating rod (26), the upper end of the right side of the second connecting rod (252) is rotatably connected with the left side of the first rotating shaft (251), the right side of the bottom of the second connecting rod (252) is provided with the second rotating shaft (253), the upper end of the right side of the disc (254) is fixedly connected with the left side of the first supporting rod (23), the left side of the first sliding block (255) is fixedly connected with the right side of the second rotating shaft (253), the right side of the second sliding block (256) is fixedly connected with the bottom end of the left side of the first sliding block (255), and the inner side of the first sliding chute (257) is slidably connected with the second sliding block (256), two ends of the bottom of the first sliding groove (257) are provided with a first sliding rod (258), and the left side of the limiting block (259) is fixedly connected with the right side of the fifth supporting rod (28).

7. The laboratory high protection fume hood as claimed in claim 5, wherein: the rack transmission mechanism (69) comprises a second rotating rod (691), a first gear (692), a rack (693), a connecting block (694), a second bump (695), a second sliding rod (696) and a second gear (697), the back of the second rotating rod (691) is rotatably connected with the front side of a second motor (68), the middle end of the back of the first gear (692) is fixedly connected with the front side of the second rotating rod (691), the inner side of the rack (693) is meshed with the outer sides of the first gear (692) and the second gear (697), the lower end of the front side of the connecting block (694) is fixedly connected with the back of the second bump (695), the second bump (695) is embedded in the middle of the second sliding rod (696), and the middle end of the back of the second gear (697) is fixedly connected with the front side of a limiting sleeve (67).

8. The laboratory high protection fume hood as claimed in claim 2, wherein: the left side of the first connecting rod (27) is fixedly connected with the right side of the ventilation connecting pipe (12), and the ventilation connecting pipe (12) is a telescopic pipe.

9. The high-protection fume hood for the laboratory according to claim 1, wherein: the sterilizing and disinfecting device (5) is internally provided with 5 ultraviolet lamp tubes (53), the sterilizing and disinfecting devices (5) are arranged in two groups, and the sterilizing and disinfecting devices (5) are respectively arranged on the left side and the right side in the cabinet body (1).

Background

The laboratory is a test place, is a scientific cradle which is a scientific research base and a source of scientific and technological development, and plays a very important role in the scientific and technological development;

the fume hood is a large-scale device in a chemical laboratory, is used for reducing contact between an experimenter and harmful gases, is a primary barrier for protecting personnel from being damaged by toxic chemical smoke, and can be used as important safety backup equipment for effectively discharging the harmful gases when chemical smoke, dust and the toxic gases are generated and protecting working personnel and the laboratory environment when a chemical experiment process fails;

along with scientific and technological development, the fume hood has also obtained the technological improvement, but the fume hood of the novel prior art of prior art, the unable length of adjusting of ventilation pipe, operating personnel is when the experiment, the toxic gas of production can spread, still can produce the harm on the health to operating personnel, the fume hood directly discharges the toxic gas to the open air, lead to environmental pollution, the fume hood is at the in-process that uses, can remain some experiment liquid on the operation panel, need frequent cleanness, it is comparatively loaded down with trivial details, the inside bacterium that can breed of fume hood, influence the result of experiment, and shorten the life of fume hood.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects of the prior art, a high-protection fume hood for laboratories is provided, so as to solve the problems that the length of a fume hood in the prior art cannot be adjusted by a vent pipe, toxic gas generated by an operator can diffuse during an experiment and still can harm the body of the operator, the height of a vent connecting pipe can be adjusted by arranging an adjusting device at the upper end of the right side of a hood body, the toxic gas can be discharged in time to avoid gas diffusion and influence on the physical and mental health of the operator, the fume hood directly discharges the toxic gas to the outdoor to cause environmental pollution, the middle part of the vent pipe is provided with a filter layer to effectively filter part of the toxic gas to avoid environmental pollution, and part of experimental liquid can be remained on an operation table during the use process of the fume hood, so that the fume hood needs to be frequently cleaned and is cumbersome, and the operation table is cleaned by arranging a cleaning device at the, and water stain accessible basin flows to the drain pipe, and the rethread drain pipe is discharged, and labour saving and time saving is light convenient, and the inside bacterial growth that can breed of fume hood influences the result of experiment to shorten the life of fume hood, through set up degerming degassing unit in the internal left and right sides of cupboard, the ultraviolet ray is the quartz lamp of the low pressure mercury of artificial making, packs mercury into in the quartz glass pipe, and the circular telegram back, mercury gasification gives out the ultraviolet ray, disinfects through ultraviolet lamp pipe.

(II) technical scheme

The invention is realized by the following technical scheme: the invention provides a high-protection ventilating cabinet for a laboratory, which comprises a cabinet body, an adjusting device, a ventilating pipe, a filtering layer, a sterilization and disinfection device, a cleaning device, a protection window, a movable door, a handle, a switch, a power line, a ventilating connecting pipe and an operating platform, wherein the left side of the adjusting device is fixedly connected with the upper end of the right side of the cabinet body, the ventilating pipe is arranged in the middle of the top end of the cabinet body, the filtering layer is arranged in the middle of the ventilating pipe, the sterilization and disinfection device is arranged on the left side and the right side of the interior of the cabinet body, the cleaning device is arranged at the middle end of the back of the cabinet body, the protection window is arranged in the middle of the front side of the cabinet body, the movable door is arranged at the lower end of the front side of the cabinet body, the handle is arranged in the middle of the front side of the movable door, the switches are arranged at the left end and the right end of the front side of the cabinet body, the power line is arranged at the back of the cabinet body, the ventilating connecting pipe is arranged at the bottom of the ventilating connecting pipe, and the operating platform is arranged in the middle of the inner side of the cabinet body.

Furthermore, the adjusting device comprises a first shell, a first motor, a first supporting rod, a second supporting rod, an adjusting mechanism, a first rotating rod, a first connecting rod and a fifth supporting rod, the left side of the first shell is fixedly connected with the upper end of the right side of the cabinet body, the bottom of the first motor is fixedly connected with the top end of the second supporting rod, the right side of the first supporting rod is fixedly connected with the upper right end of the inner side of the first shell, the bottom of the second supporting rod is fixedly connected with the bottom of the inner side of the first shell, the adjusting mechanism is arranged in the middle of the inner side of the first shell, the right side of the first rotating rod is rotatably connected with the left side of the first motor, the right side of the first connecting rod is welded with the left side of the first sliding rod, and the left side of the fifth supporting rod is fixedly connected with the left side of the inner portion of the first shell.

Furthermore, a first bump is arranged on the contact surface of the filter layer and the ventilation pipe.

Furthermore, the sterilization and disinfection device comprises a second shell, a pipe cap and an ultraviolet lamp tube, wherein the left side of the second shell is fixedly connected with the left side inside the cabinet body, the top end of the pipe cap is fixedly connected with the top of the inner side of the second shell, and the ultraviolet lamp tube is arranged at the bottom of the pipe cap.

Furthermore, the cleaning device comprises a water tank, a second sliding groove, a water discharging pipe, a third shell, a third supporting rod, a fourth supporting rod, a limiting sleeve, a second motor, a rack transmission mechanism and a cleaning cotton rod, wherein the water tank is arranged on the left side and the right side of the top end of the operating platform, the second sliding groove is arranged at the middle end of the back of the cabinet body, the water discharging pipe is arranged at the bottom of the operating platform, the bottom of the third shell is fixedly connected with the middle end of the back of the cabinet body, the left side of the third supporting rod is fixedly connected with the left upper end of the inner side of the third shell, the bottom of the fourth supporting rod is sleeved with the top end of the limiting sleeve, the bottom of the limiting sleeve is fixedly connected with the middle of the top end of the second gear, the left middle end of the second motor is fixedly connected with the right side of the third supporting rod, the middle of the third shell is provided with the rack transmission mechanism, and the top end of the cleaning cotton rod is fixedly connected with the left end of the bottom of the second sliding rod.

Further, the adjusting mechanism comprises a first rotating shaft, a second connecting rod, a second rotating shaft, a disc, a first slider, a second slider, a first sliding groove, a first sliding rod and a limiting block, wherein the right side of the first rotating shaft is rotatably connected with the left side of the first rotating rod, the upper end of the right side of the second connecting rod is rotatably connected with the left side of the first rotating shaft, the right side of the bottom of the second connecting rod is provided with the second rotating shaft, the upper end of the right side of the disc is fixedly connected with the left side of the first supporting rod, the left side of the first slider is fixedly connected with the right side of the second rotating shaft, the right side of the second slider is fixedly connected with the bottom of the left side of the first slider, the inner side of the first sliding groove is slidably connected with the second slider, two ends of the bottom of the first sliding groove are provided with the first sliding rod, and the left side of the limiting block is fixedly connected with the right side of the fifth supporting rod.

Further, the rack transmission mechanism comprises a second rotating rod, a first gear, a rack, a connecting block, a second lug, a second sliding rod and a second gear, the back of the second rotating rod is rotatably connected with the front side of a second motor, the middle end of the back of the first gear is fixedly connected with the front side of the second rotating rod, the inner side of the rack is meshed with the outer sides of the first gear and the second gear, the lower end of the front side of the connecting block is fixedly connected with the back of the second lug, the second lug is embedded in the middle of the second sliding rod, and the middle end of the back of the second gear is fixedly connected with the front side of a limiting sleeve.

Furthermore, the left side of the first connecting rod is fixedly connected with the right side of the ventilation connecting pipe, and the ventilation connecting pipe is a telescopic pipe.

Furthermore, 5 ultraviolet lamp tubes are arranged in the sterilization and disinfection device, two groups of sterilization and disinfection devices are arranged in the sterilization and disinfection device, and the sterilization and disinfection devices are respectively arranged on the left side and the right side in the cabinet body.

Furthermore, the cabinet body is made of glass fiber reinforced plastic.

Furthermore, the filter layer is made of activated carbon.

(III) advantageous effects

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

1) in order to solve the problem that the length of a ventilation pipe cannot be adjusted, and toxic gas generated by an operator can be diffused and still can harm the body of the operator during an experiment, an adjusting device is arranged at the upper end of the right side of a cabinet body, the ventilation cabinet is connected with an external power supply through a power line, a switch is pressed, a first motor operates, the first motor drives a first rotating rod to rotate, the first rotating rod drives a first rotating shaft to rotate, the first rotating shaft drives a second connecting rod to rotate, the second connecting rod drives a second rotating shaft to rotate, the second rotating shaft drives a first sliding block to slide up and down, the first sliding block drives a second sliding block to slide left and right, the second sliding block drives a first sliding groove to slide up and down, the first sliding rod drives a first connecting rod to slide up and down, the first connecting rod drives a ventilation connecting pipe to slide up and down, so that the height of the ventilation connecting pipe can be adjusted, can discharge the toxic gas in time, avoid the gas diffusion, influence operating personnel's physical and mental health.

2) The fume hood directly discharges toxic gas to the open air for solving, leads to environmental pollution, through set up the filter layer in the middle part of the ventilation pipe, the filter layer is made by activated carbon, and the adsorbable organic matter gas of activated carbon, toxic gas are only partly in the organic matter gas, and general relative molecular mass is big can both adsorb, for example: chloroform, dichloromethane, acetone, hydrogen sulfide, formaldehyde, liquefied petroleum gas and the like, has no chemical reaction, can not generate any secondary pollution, effectively filters partial toxic gas, and avoids environmental pollution.

3) In order to solve the fume hood in the in-process of using, can remain some experimental liquid on the operation panel, need frequent cleanness, it is comparatively loaded down with trivial details, through set up cleaning device in cupboard body back middle-end, press the switch, the second motor begins the operation, the second motor drives the second bull stick and rotates, the second bull stick drives first gear revolve, first gear drives the rack and rotates, the rack drives the connecting block horizontal slip, the connecting block drives the second lug horizontal slip, the second lug drives the second slide bar horizontal slip, the second slide bar drives clean cotton pole horizontal slip, thereby clean the operation panel, and water stain accessible basin flows to the drain pipe, the rethread drain pipe is discharged, and is time-saving and labor-saving, it is light convenient.

4) In order to solve the problem that bacteria grow in the interior of the fume hood, influence the experimental result and shorten the service life of the fume hood, a sterilization disinfection device is arranged on the left side and the right side of the interior of the hood body, a switch is pressed, an ultraviolet lamp tube is turned on to irradiate the interior of the hood body, ultraviolet rays are artificially manufactured quartz lamps with low-pressure mercury, mercury is filled in the quartz glass tube, and after the power is on, the mercury is gasified to emit the ultraviolet rays, and the sterilization disinfection is carried out through the ultraviolet lamp tube.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

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

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic side view of the adjusting device of the present invention;

FIG. 4 is a schematic view of the adjusting mechanism of the present invention;

FIG. 5 is a schematic view of a filter layer structure of the present invention;

FIG. 6 is a schematic side view of the sterilization apparatus according to the present invention;

FIG. 7 is a schematic top view of the cleaning device of the present invention;

FIG. 8 is a schematic structural view of a rack gear mechanism of the present invention;

in the figure: a show body-1, an adjusting device-2, a ventilating pipe-3, a filtering layer-4, a sterilization and disinfection device-5, a cleaning device-6, a protective window-7, a movable door-8, a handle-9, a switch-10, a power cord-11, a ventilating connecting pipe-12, an operation table-13, a first shell-21, a first motor-22, a first supporting rod-23, a second supporting rod-24, an adjusting mechanism-25, a first rotating rod-26, a first connecting rod-27, a fifth supporting rod-28, a first rotating shaft-251, a second connecting rod-252, a second rotating shaft-253, a disc-254, a first sliding block-255, a second sliding block-256, a first sliding groove-257, a first sliding rod-258, a limiting block-259, a first rotating rod-252, a second rotating shaft-253, a second sliding block-255, a second sliding block-257, a first sliding rod-258, a limiting block-259, a second rotating rod-28, a second rotating rod-24, a second rotating rod-23, a second rotating rod-24, a second rotating rod-23, a second rotating mechanism, a third rotating mechanism, a fourth rotating mechanism, the cleaning device comprises a first bump-41, a second shell-51, a pipe cap-52, an ultraviolet lamp-53, a water tank-61, a second sliding groove-62, a water discharging pipe-63, a third shell-64, a third supporting rod-65, a fourth supporting rod-66, a limiting sleeve-67, a second motor-68, a rack transmission mechanism-69, a cleaning cotton rod-610, a second rotating rod-691, a first gear-692, a rack-693, a connecting block-694, a second bump-695, a second sliding rod-696 and a second gear-697.

Detailed Description

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, the present invention provides a high-protection fume hood for a laboratory: comprises a show body 1, an adjusting device 2, a ventilation pipe 3, a filter layer 4, a sterilization and disinfection device 5, a cleaning device 6, a protective window 7, a movable door 8, a handle 9, a switch 10, a power cord 11, a ventilation connecting pipe 12 and an operation table 13, the left side of the adjusting device 2 is fixedly connected with the upper end of the right side of the cabinet body 1, the middle of the top end of the cabinet body 1 is provided with a ventilation pipe 3, the middle of the ventilation pipe 3 is provided with a filter layer 4, the left side and the right side inside the cabinet body 1 are provided with sterilization and disinfection devices 5, the middle end of the back of the cabinet body 1 is provided with a cleaning device 6, the middle of the front side of the cabinet body 1 is provided with a protective window 7, the lower end of the front side of the cabinet body 1 is provided with a movable door 8, the middle of the front side of the movable door 8 is provided with a handle 9, the left end and the right end of the front side of the cabinet body 1 are provided with switches 10, the back of the cabinet body 1 is provided with a power line 11, the bottom of the ventilation pipe 3 is provided with a ventilation connecting pipe 12, and the middle of the inner side of the cabinet body 1 is provided with an operation table 13.

The adjusting device 2 comprises a first shell 21, a first motor 22, a first supporting rod 23, a second supporting rod 24, an adjusting mechanism 25, a first rotating rod 26, a first connecting rod 27 and a fifth supporting rod 28, wherein the left side of the first shell 21 is fixedly connected with the upper end of the right side of the cabinet body 1, the bottom of the first motor 22 is fixedly connected with the top end of the second supporting rod 24, the right side of the first supporting rod 23 is fixedly connected with the upper right end of the inner side of the first shell 21, the bottom of the second supporting rod 24 is fixedly connected with the bottom of the inner side of the first shell 21, the adjusting mechanism 25 is arranged in the middle of the inner side of the first shell 21, the right side of the first rotating rod 26 is rotatably connected with the left side of the first motor 22, the right side of the first connecting rod 27 is welded with the left side of the first sliding rod 258, and the left side of the fifth supporting rod 28 is fixedly connected with the left side inside the first shell 21, so that the adjusting device 2 can normally operate.

Wherein, the contact surface of the filter layer 4 and the vent pipe 3 is provided with a first bump 41, harmful gas can be filtered according to the above, and the environment pollution is avoided.

The sterilizing device 5 comprises a second shell 51, a tube cap 52 and an ultraviolet lamp tube 53, the left side of the second shell 51 is fixedly connected with the left side inside the cabinet body 1, the top end of the tube cap 52 is fixedly connected with the top of the inner side of the second shell 51, the ultraviolet lamp tube 53 is arranged at the bottom of the tube cap 52, and the sterilizing device 5 can normally operate according to the above.

Wherein, the cleaning device 6 comprises a water tank 61, a second chute 62, a drain pipe 63, a third shell 64, a third supporting rod 65, a fourth supporting rod 66, a limiting sleeve 67, a second motor 68, a rack transmission mechanism 69 and a cleaning cotton rod 610, the left and right sides of the top end of the operating table 13 are provided with the water tank 61, the middle end of the back of the cabinet body 1 is provided with the second chute 62, the bottom of the operating table 13 is provided with the drain pipe 63, the bottom of the third shell 64 is fixedly connected with the middle end of the back of the cabinet body 1, the left side of the third supporting rod 65 is fixedly connected with the left upper end of the inner side of the third shell 64, the bottom of the fourth supporting rod 66 is sleeved with the top end of the limiting sleeve 67, the bottom of the limiting sleeve 67 is fixedly connected with the middle part of the top end of a second gear 697, the left middle end of the second motor 68 is fixedly connected with the right side of the third supporting rod 65, the middle part of the third shell 64 is provided with the rack transmission mechanism 69, the top end of the cleaning cotton rod 610 is fixedly connected with the left end of the bottom of the second sliding rod 696, the cleaning device 6 can be operated normally according to the above.

Wherein, the adjusting mechanism 25 comprises a first rotating shaft 251, a second connecting rod 252, a second rotating shaft 253 and a disk 254, the adjusting mechanism comprises a first sliding block 255, a second sliding block 256, a first sliding groove 257, a first sliding rod 258 and a limiting block 259, wherein the right side of the first rotating shaft 251 is rotatably connected with the left side of the first rotating rod 26, the upper end of the right side of the second connecting rod 252 is rotatably connected with the left side of the first rotating shaft 251, the right side of the bottom of the second connecting rod 252 is provided with the second rotating shaft 253, the upper end of the right side of the disk 254 is fixedly connected with the left side of the first supporting rod 23, the left side of the first sliding block 255 is fixedly connected with the right side of the second rotating shaft 253, the right side of the second sliding block 256 is fixedly connected with the bottom end of the left side of the first sliding block 255, the inner side of the first sliding groove 257 is slidably connected with the second sliding block 256, two ends of the bottom of the first sliding groove 257 are provided with the first sliding rod 258, the left side of the limiting block 259 is fixedly connected with the right side of the fifth supporting rod 28, and the adjusting mechanism 25 can normally operate according to the above.

The rack transmission mechanism 69 includes a second rotating rod 691, a first gear 692, a rack 693, a connecting block 694, a second projection 695, a second sliding rod 696 and a second gear 697, wherein the back of the second rotating rod 691 is rotatably connected with the front side of the second motor 68, the middle end of the back of the first gear 692 is fixedly connected with the front side of the second rotating rod 691, the inner side of the rack 693 is engaged with the outer sides of the first gear 692 and the second gear 697, the lower end of the front side of the connecting block 694 is fixedly connected with the back of the second projection 695, the second projection 695 is embedded in the middle of the second sliding rod 696, and the middle end of the back of the second gear 697 is fixedly connected with the front side of the limiting sleeve 67, so that the rack transmission mechanism 69 can normally operate.

Wherein, the left side of the first connecting rod 27 is fixedly connected with the right side of the ventilation connecting pipe 12, and the ventilation connecting pipe 12 is a telescopic pipe, so that the adjusting device 2 can normally operate according to the above.

The sterilizing and disinfecting device 5 is internally provided with 5 ultraviolet lamp tubes 53, the sterilizing and disinfecting devices 5 are provided with two groups, and the sterilizing and disinfecting devices 5 are respectively arranged on the left side and the right side in the cabinet body 1, so that the sterilizing and disinfecting efficiency is improved.

The cabinet body 1 is made of glass fiber reinforced plastic, so that the service life of the cabinet body 1 is prolonged.

The ultraviolet lamp 53 of this patent is a lamp made by using the special function of ultraviolet, and the low-pressure ultraviolet lamp 53, i.e. a germicidal lamp and an amalgam lamp, is mainly used for sterilization, oil smoke purification, sewage treatment, waste gas treatment, etc.

The working principle is as follows: firstly, a user horizontally places the device at a place needing to be used, and the user connects the device with an external power supply through a power line 11;

then, the user can open the protection window 7, perform an experiment on the operation table 13, and press the switch 10, the first motor 22 operates, the first motor 22 drives the first rotating rod 26 to rotate, the first rotating rod 26 drives the first rotating shaft 251 to rotate, the first rotating shaft 251 drives the second connecting rod 252 to rotate, the second connecting rod 252 drives the second rotating shaft 253 to rotate, the second rotating shaft 253 drives the first sliding block 255 to slide up and down, the first sliding block 255 drives the second sliding block 256 to slide left and right, the second sliding block 256 drives the first sliding slot 257 to slide up and down, the first sliding block 257 drives the first sliding rod 258 to slide up and down, the first sliding rod 258 drives the first connecting rod 27 to slide up and down, the first connecting rod 27 drives the ventilation connecting pipe 12 to slide up and down, so as to adjust the height of the ventilation connecting pipe 12, exhaust toxic gases in time, avoid gas diffusion, affect the physical and mental health of the operator, and filter the toxic gases through the filter layer 4, the filter layer 4 is made of activated carbon, and the activated carbon can adsorb organic gas, and the toxic gas is only a part of the organic gas, and can be adsorbed generally with large relative molecular mass, for example: chloroform, dichloromethane, acetone, hydrogen sulfide, formaldehyde, liquefied petroleum gas and the like, has no chemical reaction, cannot generate any secondary pollution, effectively filters partial toxic gas, and avoids environmental pollution;

finally, after the user finishes the experiment, the switch 10 is pressed down, the second motor 68 starts to operate, the second motor 68 drives the second rotating rod 691 to rotate, the second rotating rod 691 drives the first gear 692 to rotate, the first gear 692 drives the rack 693 to rotate, the rack 693 drives the connecting block 694 to slide left and right, the connecting block 694 drives the second bump 695 to slide left and right, the second bump 695 drives the second sliding rod 696 to slide left and right, and the second sliding rod 696 drives the cleaning cotton rod 610 to slide left and right, so as to clean the operating table, water stains can flow to the drain pipe 63 through the water tank 61 and then be discharged through the drain pipe 63, time and labor are saved, the operating table is easy and convenient, the cabinet body 1 can be sterilized once a day, the switch 10 is pressed down, the ultraviolet lamp tube 53 is lightened, the inside of the cabinet body 1 is irradiated by ultraviolet rays which are a quartz lamp of low mercury manufactured manually, the mercury is put into the quartz glass tube, and after the electricity is turned on, the mercury is vaporized to emit ultraviolet rays, and the ultraviolet rays are sterilized by the ultraviolet lamp 53.

The control mode of the invention is controlled by manually starting and closing the switch, the wiring diagram of the power element and the supply of the power source belong to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the wiring arrangement are not explained in detail in the invention.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.