CN215027600U

CN215027600U - Laboratory acid exhaust treatment device

Info

Publication number: CN215027600U
Application number: CN202120973169.0U
Authority: CN
Inventors: 吕晶华; 赵亮; 李江华; 刘辰翔
Original assignee: Yijing Testing Service Tianjin Co ltd
Current assignee: Yijing Testing Service Tianjin Co ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-12-07
Anticipated expiration: 2031-05-08

Abstract

The utility model discloses a laboratory acid waste gas treatment device, which comprises a treatment box, one side of the treatment box is provided with a fume hood, the upper end of the fume hood is fixedly connected with a gas collecting system, the treatment box is provided with a gas guide pipe, the gas guide pipe is fixedly connected with an output pipe of the gas collecting system, the treatment box is internally provided with a treatment cavity, the side wall of the treatment cavity is communicated with the gas guide pipe, a spraying device is fixedly arranged in the inner cavity of the treatment box, a corrosion-resistant pump is arranged to spray treatment water in a waste liquid box into the treatment cavity through a liquid inlet of the spraying device, so that waste gas in the treatment cavity is sprayed and cooled, the waste gas in the treatment cavity is adsorbed and purified, the purified air is discharged into an air outlet pipe through a silk screen demister after removing water mist, is guided into a spraying treatment main machine through an exhaust pipeline for subsequent treatment, and back dripping after acid liquor in acid-containing waste gas is effectively avoided, the service life of the fume hood and the exhaust gas purification equipment is prolonged.

Description

Laboratory acid exhaust treatment device

Technical Field

The utility model relates to an environmental protection field especially relates to a sour exhaust treatment device in laboratory.

Background

At present, when heavy metals are detected in a laboratory, a sample needs to be subjected to acid digestion, acids mainly comprise hydrochloric acid, HF, sulfuric acid and perchloric acid, a large amount of acid-containing waste gas is generated in the acid digestion process, and the waste gas is discharged into the atmosphere directly without being treated, so that the pollution to the surrounding environment is inevitably caused, and organic damage is caused to a human body.

Produce waste gas among the prior art and usually collected by the fume hood to the laboratory to carry out the washing by the leading-in spray column of exhaust pipe and adsorb and purify, then high altitude emission, but fume hood, exhaust pipe and external environment have the limitation, because the route that sour waste gas reachd exhaust treatment device is longer, sour waste gas can condense the gathering and drip back in exhaust pipe, sour waste liquid drip back can cause fume hood, equipment corrosion, seriously influenced fume hood and exhaust gas purification equipment's life.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a sour exhaust treatment device in laboratory can produce and continue the washing purification in the leading-in exhaust gas purification equipment of outlet duct again after will containing the acidizing fluid absorption in the acid waste gas to with the direct emission in the acidizing fluid of absorption and back, effectively avoid containing the acidizing fluid in the acid waste gas to fume hood and exhaust gas purification equipment's life.

In order to solve the technical problem, the utility model provides a following technical scheme: a laboratory acid waste gas treatment device comprises a treatment box, wherein one side of the treatment box is connected with a fume hood, the upper end of the fume hood is fixedly connected with a gas collection system, the treatment box is provided with a gas guide pipe, the gas guide pipe is fixedly connected with an output pipe of the gas collection system, a treatment cavity is arranged inside the treatment box, the side wall of the treatment cavity is communicated with the gas guide pipe, a spraying device is fixedly arranged in the inner cavity of the treatment box and is arranged above the treatment cavity, a waste liquid collecting hopper and a waste liquid box are fixedly arranged in the inner cavity of the treatment box, the waste liquid collecting hopper is positioned below the treatment cavity, the waste liquid box is positioned below the waste liquid collecting hopper, a liquid outlet at the lower end of the waste liquid collecting hopper is communicated with the inner cavity of the waste liquid box, one side of the upper end of the waste liquid box is fixedly connected with an anticorrosion pump, the input end of the anticorrosion pump penetrates through the upper end of the waste liquid box and is fixedly connected in the inner cavity of the waste liquid box, and the output of anticorrosive pump runs through waste liquid and collects fill and spray set's input fixed connection, the upper end of waste liquid case is equipped with the moisturizing pipe, and moisturizing pipe fixedly connected with electric moisturizing valve, outlet duct pass through exhaust duct and spray and handle the host computer and be connected, outlet duct fixedly connected with draught fan.

As an optimal technical scheme of the utility model, the lower extreme fixedly connected with neutralizing tank of waste liquid case, and neutralizing tank sets up in the bottom of handling the case.

As the utility model discloses an optimized technical scheme, handle the lateral wall fixedly connected with PLC control box of case, and fixed mounting has the level gauge in the waste liquid case, level gauge and electronic water replenishing valve and PLC control box electric connection.

As the utility model discloses a preferred technical scheme, the lateral wall of waste liquid case is close to upper end department and is provided with the warning pipe, and the lateral wall of waste liquid case is close to lower extreme department fixedly connected with blow-down pipe, warning pipe and blow-down pipe pass through the inner chamber upper end of pipeline intercommunication neutralization box, fixed mounting has the atmospheric valve on the blow-down pipe.

As the utility model discloses an optimized technical scheme, fixed mounting has the silk screen defroster in the inner chamber of processing case, and the silk screen defroster is located spray set's upper end setting.

As a preferred technical scheme of the utility model, the lateral wall lower extreme fixed mounting of neutralization case has the pH meter, and the probe rod of pH meter runs through neutralization case lateral wall setting, the lateral wall upper end fixedly connected with regulating solution input tube of neutralization case, the regulating solution input tube is connected with pH regulating solution feeding mechanism, and pH regulating mechanism and PLC control box electric connection.

As an optimal technical scheme of the utility model, the lateral wall lower extreme of neutralization case is provided with the drain pipe, and the drain pipe connection sewer line.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

1. according to the scheme, the treatment box is arranged, so that acid-containing waste gas discharged by the fume hood is guided into the treatment cavity through the air guide tube, the treatment water in the waste liquid box is sprayed into the treatment cavity through the spraying device by the arranged anticorrosive pump, the waste gas is sprayed and cooled, the waste gas in the treatment cavity is adsorbed and purified, the purified air is discharged into the air outlet tube by the draught fan after water mist is removed by the wire mesh demister, and is guided into the spraying treatment main machine through the air outlet tube for subsequent treatment, so that the acid liquid in the acid-containing waste gas is effectively prevented from dripping back after being condensed, and the service life of the fume hood and the waste gas purification equipment is prolonged;

2. this scheme is through setting up in with the case will spill over contain the sour waste liquid neutralization, through setting up the PLC control box, control electronic water replenishing valve opens and close to waste liquid case moisturizing, guarantee the purifying effect of handle intracavity waste gas, through setting up the pH meter, pH meter monitoring neutralization incasement pH value, thereby according to pH value drive pH regulating solution feeding mechanism from regulating solution input tube pump income pH regulating solution, effectively guaranteed drain pipe exhaust waste liquid by the neutralization thoroughly, reduce the harm nature of waste liquid.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a side sectional view of the treatment tank of the present invention;

fig. 4 is a block diagram of the system structure of the present invention.

Wherein: 1. a fume hood; 2. a gas collection system; 3. an air duct; 4. a treatment tank; 5. a treatment chamber; 6. a waste liquid tank; 7. an electric water replenishing valve; 8. an anti-corrosion pump; 9. a spraying device; 10. a PLC control box; 11. a neutralization tank; 12. a conditioning fluid input tube; 13. a pH meter; 14. an overflow pipe; 15. an emptying pipe; 16. an atmospheric valve; 17. a waste liquid collecting hopper; 18. a wire mesh demister; 19. an induced draft fan; 20. an air outlet pipe; 21. a drain pipe; 22. a liquid level meter.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-4, a laboratory acid waste gas treatment device comprises a treatment box 4, one side of the treatment box 4 is connected with a fume hood 1, the upper end of the fume hood 1 is fixedly connected with a gas collecting system 2, the treatment box 4 is provided with a gas guide tube 3, the gas guide tube 3 is fixedly connected with an output tube of the gas collecting system 2, a treatment cavity 5 is arranged inside the treatment box 4, the side wall of the treatment cavity 5 is communicated with the gas guide tube 3, a spraying device 9 is fixedly arranged in the inner cavity of the treatment box 4, the spraying device 9 is arranged above the treatment cavity 5, a waste liquid collecting hopper 17 and a waste liquid box 6 are fixedly arranged in the inner cavity of the treatment box 4, the waste liquid collecting hopper 17 is positioned below the treatment cavity 5, the waste liquid box 6 is positioned below the waste liquid collecting hopper 17, a liquid outlet at the lower end of the waste liquid collecting hopper 17 is communicated with the inner cavity of the waste liquid box 6, one side of the upper end of the waste liquid box 6 is fixedly connected with an antiseptic pump 8, the input of anticorrosive pump 8 runs through 6 upper ends of waste liquid case fixed connection in the 6 inner chambers of waste liquid case, and the output of anticorrosive pump 8 runs through waste liquid and collects the input fixed connection of fighting 17 and spray set 9, and the upper end of waste liquid case 6 is equipped with the moisturizing pipe, and the electronic moisturizing valve 7 of moisturizing pipe fixedly connected with, outlet duct 20 pass through exhaust duct and spray the processing host computer and be connected, 20 fixedly connected with draught fan 19 of outlet duct.

This scheme is through setting up processing box 4, make fume cupboard 1 exhaust acid-containing waste gas pass through 3 leading-in processing chambers 5 of air duct, the anticorrosive pump 8 of setting sprays the processing chamber 5 in with the processing water in the waste liquid case 6 through spray set 9, thereby spray and cool down the waste gas in the processing chamber 5, and adsorb the purification with the waste gas in the processing chamber 5, the air after the purification is through drawing to outlet duct 20 by draught fan 19 after the silk screen defroster 18 detached remaining water smoke, carry out subsequent handling in leading-in spray treatment host computer of exhaust duct again, effectively avoided dripping back after the acidizing fluid condensation in the acid-containing waste gas, the life of fume cupboard 1 and exhaust gas purification equipment has been improved.

In other embodiments, the lower end of the waste liquid tank 6 is fixedly connected with a neutralization tank 11, and the neutralization tank 11 is disposed at the bottom of the treatment tank 4, and the treatment waste liquid is stored and neutralized by the disposed neutralization tank 11, thereby facilitating the discharge of the waste liquid.

In other embodiments, the side wall of the treatment box 4 is fixedly connected with the PLC control box 10, the liquid level meter 22 is fixedly mounted in the waste liquid box 6, the liquid level meter 22 and the electric water replenishing valve 7 are electrically connected with the PLC control box 10, the water level in the waste liquid box 6 is monitored through the liquid level meter 22, when the water level in the waste liquid box 6 reaches a preset value, the waste liquid collection hopper 17 is controlled to be opened through the PLC control box 10, and therefore water is replenished in the waste liquid box 6.

In other embodiments, the lateral wall of waste liquid case 6 is close to upper end department and is provided with overflow pipe 14, and the lateral wall of waste liquid case 6 is close to lower extreme fixedly connected with blow-down pipe 15, overflow pipe 14 and blow-down pipe 15 pass through the inner chamber upper end of pipeline intercommunication neutralization box 11, fixed mounting has atmospheric valve 16 on the blow-down pipe 15, can be in waste water leading-in neutralization box 11 when waste water is more in waste liquid case 6 through setting up overflow pipe 14, through setting up blow-down pipe 15, after setting up the end of use, can be through opening atmospheric valve 16, with the whole leading-in neutralization box 11 handles of waste liquid of storage in waste liquid case 6, and convenient to use.

In other embodiments, fixed mounting has silk screen defroster 18 in the inner chamber of treatment box 4, and silk screen defroster 18 is located spray set 9's upper end setting, through setting up silk screen defroster 18, can get rid of the drop of water in the waste liquid after being purified by the washing in treatment chamber 5, guarantees that contain acid waste water can not flow along with the air current, has effectively improved exhaust duct's life.

In other embodiments, the lower end of the side wall of the neutralization tank 11 is fixedly provided with a pH meter 13, a probe rod of the pH meter 13 penetrates through the side wall of the neutralization tank 11, the upper end of the side wall of the neutralization tank 11 is fixedly connected with an adjusting liquid input pipe 12, the adjusting liquid input pipe 12 is connected with a pH adjusting liquid supply device, the pH adjusting device is electrically connected with the PLC control tank 10, the pH meter 13 monitors the pH value in the neutralization tank 11, so that the pH adjusting liquid supply device is driven to pump the pH adjusting liquid from the adjusting liquid input pipe 12 according to the pH value, the waste liquid discharged by the drain pipe 21 is effectively neutralized thoroughly, and the harmfulness of the waste liquid is reduced.

In other embodiments, the lower end of the side wall of the neutralization tank 11 is provided with a drain pipe 21, and the drain pipe 21 is connected with a sewer pipeline, so that the neutralized wastewater is discharged through the drain pipe 21, which is convenient and practical.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an sour exhaust treatment device in laboratory, is including handling case (4), the one side of handling case (4) is connected with fume hood (1), the upper end fixedly connected with gas collection system (2) of fume hood (1), its characterized in that: the treatment device is characterized in that an air guide tube (3) is arranged on the treatment box (4), the air guide tube (3) is fixedly connected with an output tube of the gas collection system (2), a treatment cavity (5) is arranged inside the treatment box (4), the side wall of the treatment cavity (5) is communicated with the air guide tube (3), a spraying device (9) is fixedly arranged in an inner cavity of the treatment box (4), the spraying device (9) is arranged above the treatment cavity (5), a waste liquid collection hopper (17) and a waste liquid tank (6) are fixedly arranged in the inner cavity of the treatment box (4), the waste liquid collection hopper (17) is positioned below the treatment cavity (5), the waste liquid tank (6) is positioned below the waste liquid collection hopper (17), a lower end liquid outlet of the waste liquid collection hopper (17) is communicated with an inner cavity of the waste liquid tank (6), an anticorrosion pump (8) is fixedly connected to one side of the upper end of the waste liquid tank (6), the input of anticorrosive pump (8) runs through waste liquid case (6) upper end fixed connection in waste liquid case (6) inner chamber, and the output of anticorrosive pump (8) runs through the input fixed connection that the waste liquid was collected and is fought (17) and spray set (9), the upper end of waste liquid case (6) is equipped with the moisturizing pipe, and moisturizing pipe fixedly connected with electric moisturizing valve (7), and outlet duct (20) are connected with the processing host computer that sprays through exhaust duct, and outlet duct (20) fixedly connected with draught fan (19).

2. The laboratory acid exhaust treatment device according to claim 1, wherein: the lower end of the waste liquid tank (6) is fixedly connected with a neutralization tank (11), and the neutralization tank (11) is arranged at the bottom of the treatment tank (4).

3. The laboratory acid exhaust treatment device according to claim 1, wherein: handle lateral wall fixedly connected with PLC control box (10) of case (4), and fixed mounting has level gauge (22) in waste liquid case (6), level gauge (22) and electronic water replenishing valve (7) and PLC control box (10) electric connection.

4. The laboratory acid exhaust treatment device according to claim 1, wherein: the waste liquid tank is characterized in that an overflow pipe (14) is arranged on the position, close to the upper end, of the side wall of the waste liquid tank (6), an emptying pipe (15) is fixedly connected to the position, close to the lower end, of the side wall of the waste liquid tank (6), the overflow pipe (14) and the emptying pipe (15) are communicated with the upper end of an inner cavity of the neutralizing tank (11) through a pipeline, and an emptying valve (16) is fixedly mounted on the emptying pipe (15).

5. The laboratory acid exhaust treatment device according to claim 1, wherein: a wire mesh demister (18) is fixedly arranged in an inner cavity of the treatment box (4), and the wire mesh demister (18) is arranged at the upper end of the spraying device (9).

6. The laboratory acid exhaust treatment device according to claim 2, wherein: the utility model discloses a neutralization tank, including neutralization tank (11), lateral wall lower extreme fixed mounting of neutralization tank (11) has pH meter (13), and the probe rod of pH meter (13) runs through neutralization tank (11) lateral wall setting, the lateral wall upper end fixedly connected with regulation liquid input tube (12) of neutralization tank (11), regulation liquid input tube (12) are connected with pH regulation liquid feeding mechanism, and pH liquid adjusting device and PLC control box (10) electric connection.

7. The laboratory acid exhaust treatment device according to claim 2, wherein: the lower end of the side wall of the neutralization box (11) is provided with a drain pipe (21), and the drain pipe (21) is connected with a sewer pipeline.