Waste gas emission treatment device for laboratory

Abstract

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a waste gas emission treatment device for a laboratory, which comprises a treatment box used for purifying waste gas emitted by the laboratory, a cover plate is detachably and fixedly connected to the top of the treatment box, a partition plate is fixedly connected to the inside of the treatment box, and the partition plate is fixedly connected to the inside of the treatment box. One side of the treatment box is fixedly communicated with a suction nozzle for sucking waste gas discharged from a laboratory. The waste gas treatment device is reasonable in structural design, dust in waste gas and harmful substances in the waste gas can be fully absorbed through the baffle, the activated carbon net and the filter net, the waste gas treatment effect is improved, and the waste gas treatment effect is improved through the spraying disc rotating forwards and backwards in a reciprocating mode and the corrugated wire mesh composite filler. The purification liquid can be in uniform and comprehensive contact with the waste gas, so that the purification liquid can fully purify the waste gas, the purification effect is further improved, and the waste gas is prevented from being directly discharged to harm the body health of teachers and students.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an exhaust gas emission treatment device for laboratories. Background Art

[0002] Chemical experiments are an important part of the chemistry discipline. Students can directly or indirectly contact things and understand substances, making the impression deep and better mastering basic knowledge. While achieving the experimental effect in chemical experiments, toxic and harmful waste gas is also emitted into the air, directly affecting our health and experimental activities. The relevant method for air emission in chemical laboratories is: through a fan, the air is directly discharged into the external space. Although the indoor environment is relatively safe and the air is directly discharged into the external air, for some experiments in the chemical experiment process, the concentration of pollutants emitted is much higher than that of the general outdoor and indoor air pollutants. Moreover, as teachers and students who study and research chemistry, most of their time in life is spent in the laboratory, so they are more vulnerable to pollution, which affects the physical health of teachers and students and has great limitations. Therefore, we propose an exhaust gas emission treatment device for laboratories to solve the above problems. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above-mentioned disadvantages and propose an exhaust gas emission treatment device for laboratories.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] An exhaust gas emission treatment device for laboratories includes a treatment box used for purifying and treating the exhaust gas emitted from the laboratory. The top of the treatment box is detachably fixedly connected with a cover plate. A partition is fixedly connected inside the treatment box. One side of the treatment box is fixedly communicated with a suction nozzle for sucking the exhaust gas emitted from the laboratory. A filter adsorption mechanism is arranged between the partition and the cover plate. The other side of the treatment box is fixedly communicated with an air pump. The top of the air pump and the top of the other side of the treatment box are fixedly communicated with the same extraction pipe. Two plate corrugated wire mesh composite packings are slidably connected inside the treatment box. A uniform and comprehensive spray purification mechanism is arranged between the partition and the treatment box. An air outlet is opened on the front side of the treatment box.

[0006] Preferably, the filter adsorption mechanism includes a plurality of activated carbon nets and a filter net fixedly connected to the bottom of the cover plate, and a plurality of baffles fixedly connected to the top of the partition. The activated carbon nets and the baffles are alternately distributed. The filter net is on the side close to the suction nozzle. A dust collection box is movably placed on the top of the partition, and the dust collection box abuts against one side of the filter net.

[0007] Preferably, connecting plates are fixedly connected to the tops of the activated carbon net and the filter net. A limiting plate is fixedly connected to the top of the connecting plate. A plurality of mounting openings are formed in the top of the cover plate. The plurality of connecting plates are respectively movably inserted into the corresponding mounting openings, and the limiting plate is movably abutted against the top of the cover plate.

[0008] Preferably, clamping grooves are formed on both sides of the mounting opening. Elastic clamping blocks are fixedly connected to both sides of the connecting plate. The two elastic clamping blocks are respectively movably clamped in the corresponding clamping grooves.

[0009] Preferably, four screws are threadedly connected to the top of the cover plate. The cover plate is fixedly connected to the top of the treatment box through the four screws.

[0010] Preferably, the uniform and comprehensive spray purification mechanism includes a cover body fixedly connected to the bottom of the partition plate and a water pump fixedly communicated with the bottom of one side of the treatment box. A hose is fixedly communicated with the top of the water pump. A hollow tube is rotatably connected to the bottom of the cover body. One end of the hose is fixedly communicated with one side of the hollow tube. A driving gear is fixedly sleeved on the outer side of the hollow tube. A reciprocating cylinder is fixedly connected to one side of the cover body. A rack is fixedly connected to the output shaft of the reciprocating cylinder. The rack is meshed with the driving gear.

[0011] Preferably, a spray disc is fixedly communicated with the bottom of the hollow tube. A plurality of spray heads are fixedly communicated with the bottom of the spray disc.

[0012] Preferably, a liquid inlet pipe and a liquid outlet pipe are fixedly communicated with the front side of the treatment box in sequence from top to bottom.

[0013] In the present utility model, for a waste gas emission treatment device for laboratory use, when waste gas is generated during the test process, the waste gas can be sucked from the suction nozzle into the treatment box of the partition plate through the air pump. Through the filtering and interception of the filter net, the dust is filtered into the dust collection box for collection. Through the alternating distribution of the activated carbon net and the baffle plate, the waste gas flows in an S shape, slowing down the flow rate of the waste gas and prolonging the contact time between the waste gas and the activated carbon net. Furthermore, the absorption effect of the activated carbon net on harmful substances in the waste gas is improved. Then, the air pump sucks the adsorbed waste gas into the exhaust pipe and finally into the treatment box below the partition plate. Through the water pump, the purification liquid can be sucked into the hose, the hollow tube, and the spray disc and finally sprayed out from the plurality of spray heads, thereby washing and purifying the waste gas.

[0014] In the present utility model, for the described waste gas emission treatment device for laboratory use, through the plate corrugated wire mesh composite packing, while ensuring the waste gas filtration effect, the purification liquid can be evenly distributed on the plate corrugated wire mesh composite packing to form a layer of purification liquid film, so that the waste gas can be in uniform and comprehensive contact with the purification liquid film, further improving the purification effect. At the same time, through the reciprocating cylinder, the left and right reciprocating movement of the rack is driven, and the rack drives the forward and reverse reciprocating rotation of the driving gear, the hollow tube and the spray disc. Then, under the forward and reverse reciprocating rotation of the spray disc, the waste gas can be evenly and comprehensively sprayed and purified, further improving the effect of waste gas purification treatment. The purified waste gas is discharged from the air outlet again. Through the settings of the connecting plate, the limiting plate, the elastic clamping block, the installation opening and the clamping groove, the elastic clamping block can elastically clamp the clamping groove, which is conducive to regularly disassembling, assembling, cleaning and replacing the filter screen and the activated carbon mesh to ensure the filtering and adsorption effects;

[0015] The structure design of the present utility model is reasonable. Through the settings of the baffle plate, the activated carbon mesh and the filter screen, the dust and harmful substances in the waste gas can be fully absorbed first, improving the waste gas treatment effect. Through the settings of the forward and reverse reciprocating rotating spray disc and the plate corrugated wire mesh composite packing, the purification liquid can be in uniform and comprehensive contact with the waste gas, enabling the purification liquid to fully purify the waste gas, further improving the purification effect, preventing the direct discharge of waste gas from harming the physical health of teachers and students, and at the same time, the activated carbon mesh and the filter screen can be disassembled, assembled, cleaned and replaced to ensure the filtering and adsorption effects. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a waste gas emission treatment device for laboratory use proposed by the present utility model;

[0017] Figure 2 is a cross-sectional view of a waste gas emission treatment device for laboratory use proposed by the present utility model;

[0018] Figure 3 is a three-dimensional view of the filter screen, the activated carbon mesh, the connecting plate and the limiting plate of a waste gas emission treatment device for laboratory use proposed by the present utility model;

[0019] Figure 4 is a three-dimensional view of the uniform and comprehensive spray purification mechanism of a waste gas emission treatment device for laboratory use proposed by the present utility model;

[0020] Figure 5 is Figure 2 a schematic structural diagram of part A in

[0021] Figure 6 is Figure 2 a schematic structural diagram of part B in

[0022] In the figure: 1, treatment box; 2, air outlet; 3, air pump; 4, corrugated wire mesh composite packing; 5, suction pipe; 6, water pump; 7, hose; 8, suction nozzle; 9, reciprocating cylinder; 10, cover plate; 11, limiting plate; 12, connecting plate; 13, elastic clamping block; 14, filter screen; 15, activated carbon mesh; 16, driving gear; 17, rack; 18, spray disc; 19, spray head; 20, dust collection box; 21, partition plate; 22, baffle plate; 23, hollow pipe; 24, installation opening; 25, clamping groove; 26, cover body. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Refer to Figures 1-6 , an exhaust gas emission treatment device for a laboratory, including a treatment box 1 used for purifying the exhaust gas emitted by the laboratory. A cover plate 10 is detachably and fixedly connected to the top of the treatment box 1. A partition plate 21 is fixedly connected inside the treatment box 1. A suction nozzle 8 for sucking the exhaust gas emitted by the laboratory is fixedly communicated with one side of the treatment box 1. A filter adsorption mechanism is arranged between the partition plate 21 and the cover plate 10. An air pump 3 is fixedly communicated with the other side of the treatment box 1. The top of the air pump 3 and the top of the other side of the treatment box 1 are fixedly communicated with the same suction pipe 5. Two corrugated wire mesh composite packings 4 are slidably connected inside the treatment box 1. A uniform and comprehensive spray purification mechanism is arranged between the partition plate 21 and the treatment box 1. An air outlet 2 is opened on the front side of the treatment box 1.

[0025] Furthermore, the filter adsorption mechanism includes a plurality of activated carbon meshes 15 and a filter screen 14 fixedly connected to the bottom of the cover plate 10, and a plurality of baffle plates 22 fixedly connected to the top of the partition plate 21. The activated carbon meshes 15 and the baffle plates 22 are alternately distributed. The filter screen 14 is on the side close to the suction nozzle 8. A dust collection box 20 is movably placed on the top of the partition plate 21. The dust collection box 20 abuts against one side of the filter screen 14. Through the filtering and interception of the filter screen 14, dust is filtered into the dust collection box 20 for collection. Through the alternating distribution of the activated carbon meshes 15 and the baffle plates 22, the exhaust gas flows in an S shape, slowing down the flow rate of the exhaust gas and prolonging the contact time of the exhaust gas with the activated carbon meshes 15, thereby improving the absorption effect of the activated carbon meshes 15 on harmful substances in the exhaust gas.

[0026] Furthermore, connecting plates 12 are fixedly connected to the tops of the activated carbon mesh 15 and the filter mesh 14. A limiting plate 11 is fixedly connected to the top of the connecting plate 12. A plurality of mounting openings 24 are formed in the top of the cover plate 10. The plurality of connecting plates 12 are respectively movably inserted into the corresponding mounting openings 24. The limiting plate 11 is movably abutted against the top of the cover plate 10. Card slots 25 are formed on both sides of the mounting opening 24. Elastic clamping blocks 13 are fixedly connected to both sides of the connecting plate 12. The two elastic clamping blocks 13 are respectively movably clamped in the corresponding card slots 25. Through the settings of the connecting plate 12, the limiting plate 11, the elastic clamping blocks 13, the mounting opening 24 and the card slots 25, the elastic clamping blocks 13 can elastically clamp the card slots 25, which is beneficial to the regular disassembly, cleaning and replacement of the filter mesh 14 and the activated carbon mesh 15, and ensures the filtering and adsorption effects.

[0027] Furthermore, four screws are threadedly connected to the top of the cover plate 10. The cover plate 10 is fixedly connected to the top of the processing box 1 through the four screws. Through the screws, it is beneficial to disassemble and assemble the cover plate 10 for regular cleaning of the dust in the dust collection box 20.

[0028] Furthermore, the uniform and comprehensive spray purification mechanism includes a cover body 26 fixedly connected to the bottom of the partition plate 21 and a water pump 6 fixedly communicated with the bottom of one side of the processing box 1. A hose 7 is fixedly communicated with the top of the water pump 6. A hollow tube 23 is rotatably connected to the bottom of the cover body 26. One end of the hose 7 is fixedly communicated with one side of the hollow tube 23. A driving gear 16 is fixedly sleeved on the outer side of the hollow tube 23. A reciprocating cylinder 9 is fixedly connected to one side of the cover body 26. A rack 17 is fixedly connected to the output shaft of the reciprocating cylinder 9. The rack 17 is meshed with the driving gear 16. A spray disc 18 is fixedly communicated with the bottom of the hollow tube 23. A plurality of spray heads 19 are fixedly communicated with the bottom of the spray disc 18. Through the water pump 6, the purification liquid can be pumped into the hose 7, the hollow tube 23 and the spray disc 18 and finally sprayed out from the plurality of spray heads 19, so as to wash and purify the waste gas. Through the plate corrugated wire mesh composite packing 4, while ensuring the waste gas filtration effect, the purification liquid can be evenly distributed on the plate corrugated wire mesh composite packing 4 to form a layer of purification liquid film, so that the waste gas and the purification liquid film can be in uniform and comprehensive contact, further improving the purification effect. Through the reciprocating cylinder 9, the left and right reciprocating movement of the rack 17 is driven. The rack 17 drives the positive and negative reciprocating rotation of the driving gear 16, the hollow tube 23 and the spray disc 18. Under the positive and negative reciprocating rotation of the spray disc 18, the waste gas can be evenly and comprehensively sprayed and purified, further improving the purification effect of the waste gas treatment. The purified waste gas is discharged again from the air outlet 2.

[0029] Furthermore, a liquid inlet pipe and a liquid outlet pipe are fixedly communicated with the front side of the processing box 1 from top to bottom, which is convenient for regularly replacing the purification liquid in the processing box 1.

[0030] In the present utility model, the device is placed at the test area of the laboratory. When waste gas is generated during the test, through the air pump 3, the waste gas can be drawn from the suction nozzle 8 into the treatment box 1 of the partition plate 21. Through the filtration and interception of the filter screen 14, the dust is filtered into the dust collection box 20 for collection. Through the alternating distribution of the activated carbon mesh 15 and the baffle 22, the waste gas flows in an S shape, slowing down the flow rate of the waste gas and prolonging the contact time between the waste gas and the activated carbon mesh 15. Thus, the absorption effect of the activated carbon mesh 15 on harmful substances in the waste gas is improved. Then, the air pump 3 draws the adsorbed waste gas into the exhaust pipe 5 and finally into the treatment box 1 below the partition plate 21. Through the water pump 6, the purification liquid can be drawn into the hose 7, the hollow pipe 23, and the spray tray 18 and finally sprayed out from multiple nozzles 19, thereby washing and purifying the waste gas. Through the plate corrugated wire mesh composite packing 4, it has the advantages of small resistance, uniform gas-liquid distribution, large throughput, and strong anti-blocking ability. While ensuring the waste gas filtration effect, it can make the purification liquid evenly distributed on the plate corrugated wire mesh composite packing 4 to form a layer of purification liquid film, so that the waste gas can be in uniform and comprehensive contact with the purification liquid film, further improving the purification effect. At the same time, through the reciprocating cylinder 9, the left and right reciprocating movement of the rack 17 is driven. The rack 17 drives the forward and reverse reciprocating rotation of the driving gear 16, the hollow pipe 23, and the spray tray 18. Thus, under the forward and reverse reciprocating rotation of the spray tray 18, the waste gas can be evenly and comprehensively sprayed and purified, further improving the waste gas purification treatment effect. The purified waste gas is discharged again from the air outlet 2. Through the settings of the connecting plate 12, the limiting plate 11, the elastic clamping block 13, the installation opening 24, and the clamping groove 25, the elastic clamping block 13 can elastically clamp the clamping groove 25, which is conducive to regularly disassembling, cleaning, and replacing the filter screen 14 and the activated carbon mesh 15 to ensure the filtering and adsorption effects. At the same time, the cover plate 10 can be regularly disassembled to clean the dust in the dust collection box 20.

Claims

1. A laboratory waste gas emission treatment device, characterized in that: The invention comprises a treatment box (1) for purifying waste gas discharged from a laboratory, wherein the top of the treatment box (1) is detachably fixedly connected to a cover plate (10), a partition plate (21) is fixedly connected inside the treatment box (1), a suction nozzle (8) for sucking waste gas discharged from the laboratory is fixedly connected to one side of the treatment box (1), a filtering adsorption mechanism is arranged between the partition plate (21) and the cover plate (10), an air pump (3) is fixedly connected to the other side of the treatment box (1), a same air extraction pipe (5) is fixedly connected between the top of the air pump (3) and the top of the other side of the treatment box (1), two corrugated wire mesh composite fillers (4) are slidably connected inside the treatment box (1), a uniform and comprehensive spray purification mechanism is arranged between the partition plate (21) and the treatment box (1), and an air outlet (2) is opened on the front side of the treatment box (1).

2. A laboratory waste gas emission treatment device according to claim 1, characterized in that: The filtering and adsorption mechanism comprises a plurality of activated carbon nets (15) and a filter net (14) fixedly connected to the bottom of the cover plate (10), and a plurality of baffles (22) fixedly connected to the top of the partition (21), wherein the activated carbon nets (15) and the baffles (22) are alternately distributed, the filter net (14) is close to the side of the suction nozzle (8), and a dust box (20) is movably placed on the top of the partition (21), and the dust box (20) abuts against one side of the filter net (14).

3. A laboratory waste gas emission treatment device according to claim 2, characterized in that: The tops of the activated carbon net (15) and the filter net (14) are both fixedly connected to a connecting plate (12), the top of the connecting plate (12) is fixedly connected to a limiting plate (11), the top of the cover plate (10) is provided with a plurality of mounting openings (24), the plurality of connecting plates (12) are movably inserted into corresponding mounting openings (24), and the limiting plate (11) is movably abutted against the top of the cover plate (10).

4. A laboratory waste gas emission treatment device according to claim 3, characterized in that: Both sides of the installation opening (24) are provided with card slots (25), and both sides of the connection plate (12) are fixedly connected with elastic card blocks (13), and the two elastic card blocks (13) are respectively movably connected in the corresponding card slots (25).

5. The laboratory waste gas emission treatment device according to claim 1, characterized in that: The top of the cover plate (10) is threadedly connected with four screws, and the cover plate (10) is fixedly connected to the top of the processing box (1) by the four screws.

6. The laboratory waste gas emission treatment device according to claim 1, characterized in that: The uniform and comprehensive spray purification mechanism comprises a cover body (26) fixedly connected to the bottom of the partition (21) and a water pump (6) fixedly connected to the bottom of one side of the processing box (1); the top of the water pump (6) is fixedly connected to a hose (7); the bottom of the cover body (26) is rotatably connected to a hollow tube (23); one end of the hose (7) is fixedly connected to one side of the hollow tube (23); a driving gear (16) is fixedly sleeved on the outer side of the hollow tube (23); one side of the cover body (26) is fixedly connected to a reciprocating cylinder (9); a rack (17) is fixedly connected to the output shaft of the reciprocating cylinder (9); and the rack (17) is meshed with the driving gear (16).

7. A laboratory waste gas emission treatment device according to claim 6, characterized in that: The bottom of the hollow tube (23) is fixedly connected to a spray plate (18), and the bottom of the spray plate (18) is fixedly connected to a plurality of spray heads (19).

8. The laboratory waste gas emission treatment device according to claim 1, characterized in that: The front side of the processing box (1) is fixedly connected with a liquid inlet pipe and a liquid outlet pipe in sequence from top to bottom.

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