Waste gas treatment system suitable for physicochemical laboratory

Abstract

The utility model relates to the technical field of laboratory waste gas treatment, in particular to a waste gas treatment system suitable for a physicochemical laboratory, which comprises a waste gas treatment pipeline, a waste gas emptying pipeline, a waste gas recovery pipeline and a waste gas storage pipeline, the waste gas treatment pipeline is used for treating the waste gas in the laboratory, detecting the concentration of the treated waste gas, and selectively sending the detected waste gas into the waste gas emptying pipeline for emptying or sending the detected waste gas into the waste gas storage pipeline for storage. The detected waste gas is selectively fed into the waste gas emptying pipeline to be emptied or is fed into the waste gas storage pipeline to be stored, so that the waste gas escaping in the treatment process is conveniently captured, and the escaping waste gas is conveyed back into the waste gas treatment pipeline again to be treated again and then discharged, so that the emission concentration is not easy to exceed the standard; or the waste gas which still does not reach the standard after secondary treatment of the waste gas treatment pipeline is collected through the waste gas storage pipeline, and the waste gas is not emptied, so that the emission concentration is not easy to exceed the standard.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory waste gas treatment, in particular to a waste gas treatment system suitable for physical and chemical laboratories. Background Art

[0002] The waste gas generated after scientific experiments in the laboratory contains a large amount of harmful substances and chemicals, which need to be treated before being discharged into the atmosphere.

[0003] The utility model with publication number CN210699523U discloses laboratory waste gas treatment equipment, including a discharge pipe, an exhaust fan and an absorption barrel, the absorption barrel including an air intake port and an air exhaust port, a liquid storage tank is provided at the lower part of the absorption barrel, the liquid storage tank contains a neutralizing liquid, a liquid suction pipe is provided on the outside of the side wall of the absorption barrel, the liquid suction pipe is connected to the interior of the liquid storage tank, the liquid suction pipe is connected to a liquid suction pump, the liquid suction pump is connected to a liquid transport pipe, the liquid transport pipe is connected to the upper part of the absorption barrel and extends into the interior of the absorption barrel, one end of the liquid transport pipe extending into the interior of the absorption barrel is connected to a spiral spray rod, and a spray port is provided on the spiral spray rod.

[0004] As in the above-mentioned technical solution, when conventional waste gas treatment equipment treats waste gas in the laboratory, waste gas often escapes. These escaped waste gases reach the exhaust pipe without being effectively treated when passing through the treatment equipment, which can easily lead to excessive emission concentrations during exhaust. Utility Model Content

[0005] In view of this, the utility model proposes a waste gas treatment system suitable for physical and chemical laboratories, which arranges a waste gas treatment pipeline to treat the waste gas in the laboratory, and is used to detect the concentration of the treated waste gas, and selectively sends the detected waste gas into a waste gas exhaust pipeline for exhaust or into a waste gas storage pipeline for storage, so as to capture the waste gas escaping during the treatment process, and re-transport the escaped waste gas back to the waste gas treatment pipeline for re-treatment and then discharge, so that the emission concentration is not easy to exceed the standard, or collects the waste gas that still does not meet the standard after secondary treatment in the waste gas treatment pipeline through the waste gas storage pipeline, and does not exhaust these waste gases, so that the emission concentration is not easy to exceed the standard, and through centralized collection, it is convenient for subsequent centralized treatment of these waste gases.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The utility model provides an exhaust gas treatment system suitable for physical and chemical laboratories, including an exhaust gas treatment pipeline, an exhaust gas exhaust pipeline, an exhaust gas recovery pipeline and an exhaust gas storage pipeline, wherein:

[0008] One end of the exhaust gas treatment pipeline is respectively connected to one end of the exhaust gas exhaust pipeline, one end of the exhaust gas recovery pipeline, and one end of the exhaust gas storage pipeline;

[0009] The waste gas treatment pipeline is used to treat waste gas in the laboratory and to detect the concentration of the treated waste gas, and the detected waste gas is selectively sent to the waste gas exhaust pipeline for exhaustion or to the waste gas storage pipeline for storage.

[0010] On the basis of the above technical solution, preferably, the exhaust gas treatment pipeline includes an activated carbon air filter, an exhaust gas output pipeline, a first gas concentration sensor and an exhaust fan, wherein:

[0011] One end of the activated carbon air filter is connected to one end of the exhaust gas output pipe;

[0012] The first gas concentration sensor and the exhaust fan are fixedly arranged on one end of the exhaust gas output pipe away from the activated carbon air filter, and the first gas concentration sensor is arranged between the exhaust fan and the activated carbon air filter;

[0013] One end of the exhaust gas output pipe away from the activated carbon air filter is connected to one end of the exhaust gas exhaust pipe;

[0014] One end of the exhaust gas recovery pipeline is fixedly arranged on the exhaust gas output pipeline between the exhaust fan and the exhaust gas exhaust pipeline and is connected;

[0015] One end of the exhaust gas storage pipeline is fixedly arranged on and connected to the exhaust gas output pipeline between the first gas concentration sensor and the exhaust fan.

[0016] On the basis of the above technical solution, preferably, the exhaust gas exhaust pipeline includes a second gas concentration sensor, a first electric valve and an exhaust pipe, wherein:

[0017] The second gas concentration sensor and the first electric valve are both fixedly arranged on the exhaust pipe;

[0018] One end of the exhaust pipe is connected to one end of the exhaust gas output pipeline and one end of the exhaust gas recovery pipeline.

[0019] On the basis of the above technical solution, preferably, the exhaust gas recovery pipeline includes a second electric valve and a recovery pipe, wherein:

[0020] The second electric valve is fixedly arranged on the recovery pipe;

[0021] One end of the recovery pipe is connected with one end of the exhaust gas output pipeline and one end of the exhaust pipe through a tee.

[0022] On the basis of the above technical solution, preferably, the exhaust gas storage pipeline includes a third electric valve, an exhaust gas collection pipe and an exhaust gas storage box, wherein:

[0023] The third electric valve is fixedly arranged on the exhaust gas collecting pipe;

[0024] One end of the exhaust gas collecting pipe is fixedly connected to and communicated with the exhaust gas storage box, and the other end is communicated with the exhaust gas output pipeline. The third electric valve is located between the exhaust gas collecting pipe and the exhaust gas output pipeline.

[0025] On the basis of the above technical solution, preferably, the exhaust gas storage pipeline further includes an exhaust gas outlet pipe and an exhaust valve, wherein:

[0026] One end of the exhaust gas outlet pipe is fixedly arranged on the exhaust gas storage pipe and is connected thereto;

[0027] The exhaust valve is fixedly arranged on the exhaust gas outlet pipe.

[0028] On the basis of the above technical solution, preferably, the activated carbon air filter comprises a housing, an activated carbon filter module and an access door, wherein:

[0029] An air inlet is provided at one end of the housing, and an air outlet is provided at the other end, and the air outlet is fixedly connected to one end of the exhaust gas output pipe;

[0030] Two filter cavities are formed inside the housing, and the two filter cavities are arranged in mirror image up and down;

[0031] An air flow channel is provided between the two filter chambers, one end of the air flow channel is connected to the air inlet, and the other end is closed;

[0032] An opening is vertically provided at one end opposite to the two filter chambers, and the opening passes through one side end of the housing in the horizontal direction;

[0033] One end of the activated carbon filter module is arranged inside the filter cavity, and the other end is slidably arranged inside the opening in a horizontal direction, and the inside of the filter cavity and the air flow channel are connected through the activated carbon filter module;

[0034] An inspection port is provided at the side end of the housing and at a position corresponding to the opening, and the activated carbon filter module selectively passes through the inspection port;

[0035] The inspection door is arranged at the inspection opening and is hingedly connected to the side end of the shell;

[0036] An air outlet hole is provided through one end of the two filter chambers close to the air outlet in a horizontal direction, and the interior of the filter chamber and the air outlet are connected through the air outlet hole.

[0037] On the basis of the above technical solution, preferably, the activated carbon air filter further comprises a diverter plate, wherein:

[0038] The diverter plate is arranged between the two filter chambers and is fixedly arranged inside the shell.

[0039] On the basis of the above technical solution, preferably, both sides of one end of the activated carbon filter module are provided with card slots, wherein:

[0040] The two sides of the opening are slidably arranged in the card slot.

[0041] On the basis of the above technical solution, preferably, the inspection door is a transparent glass door.

[0042] The waste gas treatment system of the utility model, which is suitable for physical and chemical laboratories, has the following beneficial effects compared with the prior art:

[0043] (1) By setting up a waste gas treatment pipeline to treat the waste gas in the laboratory and to detect the concentration of the treated waste gas, the detected waste gas is selectively sent to the waste gas exhaust pipeline for exhaust or to the waste gas storage pipeline for storage, so as to capture the waste gas escaping during the treatment process and transport the escaping waste gas back to the waste gas treatment pipeline for reprocessing and then discharge, so that the emission concentration is not easy to exceed the standard.

[0044] (2) By setting up a waste gas treatment pipeline to treat the waste gas in the laboratory and to detect the concentration of the treated waste gas, the detected waste gas is selectively sent to the waste gas exhaust pipeline for exhaust or to the waste gas storage pipeline for storage. It is convenient to collect the waste gas that still does not meet the standards after secondary treatment in the waste gas treatment pipeline through the waste gas storage pipeline, and these waste gases are not discharged, so that the emission concentration is not easy to exceed the standard. In addition, centralized collection facilitates the subsequent centralized treatment of these waste gases.

[0045] (3) By providing openings and slots, the activated carbon filter module can be pulled out and moved horizontally, making it easier to replace.

[0046] (4) By setting a diversion plate, the waste gas is easily diverted, so that the upper activated carbon filter module and the lower activated carbon filter module can both be in good contact with the waste gas, thereby improving the waste gas filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 This is a plan view of an exhaust gas treatment system suitable for a physical and chemical laboratory according to the utility model;

[0049] Figure 2 It is a side cross-sectional view of the activated carbon air filter of the utility model;

[0050] Figure 3 It is a side sectional view of the housing of the utility model;

[0051] Figure 4 For the utility model Figure 3 AA section view;

[0052] Figure 5 For the utility model Figure 3 BB section view;

[0053] Figure 6 It is a side view of the activated carbon filter module of the utility model;

[0054] In the figure: 1. exhaust gas treatment pipeline; 2. exhaust gas emptying pipeline; 3. exhaust gas recovery pipeline; 4. exhaust gas storage pipeline; 11. activated carbon air filter; 12. exhaust gas output pipeline; 13. first gas concentration sensor; 14. exhaust fan; 21. second gas concentration sensor; 22. first electric valve; 23. exhaust pipe; 31. second electric valve; 32. recovery pipe; 41. third electric valve; 42. exhaust gas collection pipe; 43. exhaust gas storage box; 44. exhaust gas outlet pipe; 45. exhaust valve; 111. shell; 112. activated carbon filter module; 113. inspection door; 114. diverter plate; 1101. air inlet; 1102. air outlet; 1103. filter chamber; 1104. air flow channel; 1105. opening; 1106. inspection port; 1107. air outlet; 1108. slot. DETAILED DESCRIPTION

[0055] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0056] like Figure 1-6 As shown, the utility model is a waste gas treatment system suitable for physical and chemical laboratories, including a waste gas treatment pipeline 1, a waste gas exhaust pipeline 2, a waste gas recovery pipeline 3 and a waste gas storage pipeline 4.

[0057] like Figure 1 As shown, one end of the exhaust gas treatment pipeline 1 is respectively connected to one end of the exhaust gas exhaust pipeline 2, one end of the exhaust gas recovery pipeline 3, and one end of the exhaust gas storage pipeline 4. The exhaust gas treatment pipeline 1 is used to treat the exhaust gas in the laboratory, and to detect the concentration of the treated exhaust gas, and to selectively send the detected exhaust gas into the exhaust gas exhaust pipeline 2 for exhaustion or into the exhaust gas storage pipeline 4 for storage.

[0058] When the system is used for waste gas treatment in a laboratory, the waste gas treatment pipeline 1 treats the waste gas in the laboratory and then detects the waste gas concentration. After the detection, if the emission standard is met, the waste gas treatment pipeline 1 sends the treated waste gas to the waste gas exhaust pipeline 2 for exhaust. If the emission standard is not met or gas escape occurs, the waste gas treatment pipeline 1 sends the treated waste gas to the waste gas storage pipeline 4 for storage, or sends the waste gas back to the waste gas treatment pipeline 1 through the waste gas recovery pipeline 3 for secondary treatment. Through this setting, it is easy to capture the waste gas escaping during the treatment process, and re-transport the escaped waste gas to the waste gas treatment pipeline 1 for re-treatment and then discharge, so that the emission concentration is not easy to exceed the standard. It is convenient to collect the waste gas that still does not meet the standard after the secondary treatment of the waste gas treatment pipeline 1 through the waste gas storage pipeline 4, and do not exhaust these waste gases, so that the emission concentration is not easy to exceed the standard. Moreover, through centralized collection, the subsequent centralized treatment of these waste gases is convenient.

[0059] The exhaust gas treatment pipeline 1 includes an activated carbon air filter 11, an exhaust gas output pipe 12, a first gas concentration sensor 13 and an exhaust fan 14, wherein one end of the activated carbon air filter 11 is connected to one end of the exhaust gas output pipe 12, and the other end is connected to the interior of the laboratory through a pipe, the first gas concentration sensor 13 and the exhaust fan 14 are fixedly arranged on one end of the exhaust gas output pipe 12 away from the activated carbon air filter 11, and the first gas concentration sensor 13 is arranged between the exhaust fan 14 and the activated carbon air filter 11, and the exhaust gas output pipe 12 is away from the activated carbon air filter 11. One end is connected to one end of the exhaust gas emptying pipeline 2, one end of the exhaust gas recovery pipeline 3 is fixedly arranged on the exhaust gas output pipeline 12 between the exhaust fan 14 and the exhaust gas emptying pipeline 2 and is connected, and one end of the exhaust gas storage pipeline 4 is fixedly arranged on the exhaust gas output pipeline 12 between the first gas concentration sensor 13 and the exhaust fan 14 and is connected. When in use, the exhaust gas in the laboratory is injected into the activated carbon air filter 11, and after being processed by the activated carbon air filter 11, it reaches the first gas concentration sensor 13 for detection. After the detection meets the standard, the exhaust fan 14 sends the exhaust gas into the exhaust gas emptying pipeline 2 for emptying. If it does not meet the standard, it is sent to the exhaust gas recovery pipeline 3.

[0060] The exhaust gas exhaust pipe 2 includes a second gas concentration sensor 21, a first electric valve 22 and an exhaust pipe 23, wherein the second gas concentration sensor 21 and the first electric valve 22 are fixedly arranged on the exhaust pipe 23, one end of the exhaust pipe 23 is connected with one end of the exhaust gas output pipe 12 and one end of the exhaust gas recovery pipe 3 to form a three-way pipe structure, and the exhaust gas that meets the standards is sent into the exhaust pipe 23 by the exhaust fan 14, and is exhausted after secondary detection by the second gas concentration sensor 21. When exhausting, the first electric valve 22 is opened.

[0061] The exhaust gas recovery pipeline 3 includes a second electric valve 31 and a recovery pipe 32, wherein the second electric valve 31 is fixedly arranged on the recovery pipe 32, one end of the recovery pipe 32 is connected to one end of the exhaust gas output pipeline 12 and one end of the exhaust pipe 23 through a tee to form a three-way pipe structure. When the treated exhaust gas concentration detection does not meet the standard, the first electric valve 22 is closed, the second electric valve 31 is opened, and the exhaust fan 14 sends the exhaust gas into the recovery pipe 32, and the exhaust gas flows back to the activated carbon air filter 11 for secondary treatment. After treatment, if it meets the standard, the first electric valve 22 is opened, the second electric valve 31 is closed, and the exhaust fan 14 sends the exhaust gas into the exhaust gas exhaust pipeline 2 for exhaust.

[0062] The exhaust gas storage pipeline 4 includes a third electric valve 41, an exhaust gas collecting pipe 42 and an exhaust gas storage box 43, wherein the third electric valve 41 is fixedly arranged on the exhaust gas collecting pipe 42, one end of the exhaust gas collecting pipe 42 is fixedly connected to the exhaust gas storage box 43 and communicated, and the other end is communicated with the exhaust gas output pipe 12, and the third electric valve 41 is located between the exhaust gas collecting pipe 42 and the exhaust gas output pipe 12. If the exhaust gas after secondary treatment does not meet the standards, the first electric valve 22 and the second electric valve 31 are closed, and the third electric valve 41 is opened to allow the exhaust gas to enter the exhaust gas storage box 43 along the exhaust gas collecting pipe 42 for storage. If the standards are met, the third electric valve 41 and the second electric valve 31 are closed, the first electric valve 22 is opened, and the exhaust fan 14 sends the exhaust gas into the exhaust gas exhaust pipeline 2 for exhaust.

[0063] In order to facilitate the treatment of the collected waste gas, Figure 1 As shown, the exhaust gas storage pipeline 4 also includes an exhaust gas outlet pipe 44 and an exhaust valve 45, wherein one end of the exhaust gas outlet pipe 44 is fixedly arranged on the exhaust gas storage pipeline 4 and connected, and the exhaust valve 45 is fixedly arranged on the exhaust gas outlet pipe 44. When it is necessary to deal with the exhaust gas in the exhaust gas storage tank 43, the exhaust valve 45 is opened to outlet the exhaust gas out of the exhaust gas storage tank 43 through the exhaust gas outlet pipe 44.

[0064] In the above structure, if Figure 2-Figure 6As shown, the activated carbon air filter 11 includes a shell 111, an activated carbon filter module 112 and an inspection door 113, wherein an air inlet 1101 is provided at one end of the shell 111, and an air outlet 1102 is provided at the other end, the air outlet 1102 is fixedly connected to one end of the exhaust gas output pipe 12, the air inlet 1101 is connected to the interior of the laboratory through a pipeline, two filter chambers 1103 are formed inside the shell 111, the two filter chambers 1103 are mirror-imaged up and down, an air flow channel 1104 is provided between the two filter chambers 1103, one end of the air flow channel 1104 is connected to the air inlet 1101, and the other end is closed, an opening 1105 is provided at the opposite end of the two filter chambers 1103 along the vertical through-hole, and the opening 1105 passes through one side end of the shell 111 in the horizontal direction, and one end of the activated carbon filter module 112 is provided The inside of the filter cavity 1103, the other end is slidably arranged on the inner side of the opening 1105 along the horizontal direction, the inside of the filter cavity 1103 and the air flow channel 1104 are connected through the activated carbon filter module 112, and an inspection port 1106 is arranged at the side end of the shell 111 and at the position corresponding to the opening 1105, the activated carbon filter module 112 selectively penetrates the inspection port 1106, the inspection door 113 is arranged at the inspection port 1106 and is hinged on the side end of the shell 111, and one end of the two filter cavities 1103 close to the air outlet 1102 is penetrated by an air outlet 1107 along the horizontal direction, the inside of the filter cavity 1103 and the air outlet 1102 are connected through the air outlet 1107, and slots 1108 are arranged on both sides of one end of the activated carbon filter module 112, wherein both sides of the opening 1105 are slidably arranged in the slots 1108.

[0065] The process of the activated carbon air filter 11 treating waste gas is as follows: the waste gas in the laboratory enters the interior of one end of the outer shell 111 from the air inlet 1101, and then enters the air flow channel 1104. The waste gas passes through the activated carbon filter module 112 at the air flow channel 1104 and enters the filter chamber 1103. In this process, the waste gas passes through the activated carbon filter module 112 and then enters the filter chamber 1103 for filtering treatment. The treated waste gas enters the interior of the other end of the outer shell 111 from the air outlet 1107, and then enters the waste gas output pipe 12 from the air outlet 1102.

[0066] The activated carbon filter module 112 needs to be replaced or cleaned after being used for a period of time. When cleaning, open the inspection door 113, then slide the activated carbon filter module 112 horizontally to one side, so that the activated carbon filter module 112 passes through the inspection port 1106 and is removed from the housing 111. After replacement or cleaning, the activated carbon filter module 112 is reinserted into the housing 111. When inserting, Figure 6 As shown, the slots 1108 and the opening 1105 on both sides of the activated carbon filter module 112 are aligned so that the side ends of the opening 1105 slide inside the slots 1108 .

[0067] In order to ensure that the upper and lower activated carbon air filters 11 can both be in good contact with the exhaust gas, the activated carbon air filter 11 also includes a diverter plate 114, wherein the diverter plate 114 is arranged between the two filter chambers 1103 and fixedly arranged inside the shell 111. The exhaust gas is diverted by the diverter plate 114, so that the upper activated carbon filter module 112 and the lower activated carbon filter module 112 can both be in good contact with the exhaust gas, thereby improving the exhaust gas filtration efficiency. At the same time, when cleaning the upper activated carbon air filter 11, dust is easy to fall onto the upper activated carbon air filter 11. The diverter plate 114 can also prevent dust from falling into the lower activated carbon air filter 11, thereby keeping the lower activated carbon air filter 11 clean.

[0068] In order to facilitate observation of the activated carbon air filter 11 and alignment for replacement, the inspection door 113 is configured as a transparent glass door.

[0069] The method of using the waste gas treatment system of the utility model suitable for physical and chemical laboratories is as follows:

[0070] First, the laboratory and the waste gas treatment pipeline 1 are connected through a pipeline, and the waste gas in the laboratory is injected into the waste gas treatment pipeline 1 through the pipeline. The waste gas in the laboratory is treated by the waste gas treatment pipeline 1, and then the waste gas concentration is detected. After the detection, if the emission standard is met, the waste gas treatment pipeline 1 will send the treated waste gas to the waste gas exhaust pipeline 2 for exhaust. At this time, the third electric valve 41 and the second electric valve 31 are closed, and the first electric valve 22 is opened. If the emission standard is not met or gas escape occurs, the first electric valve 22 and the third electric valve 41 will be closed, and the second electric valve 31 will be opened, and the waste gas that does not meet the standard will be sent back to the waste gas treatment pipeline 1 through the waste gas recovery pipeline 3 for secondary treatment, or the first electric valve 22 and the second electric valve 31 will be closed, and the third electric valve 41 will be opened, and the treated waste gas will be sent to the waste gas storage pipeline 4 for storage without secondary treatment.

[0071] If the waste gas after secondary treatment still does not meet the standard, the first electric valve 22 and the second electric valve 31 are closed, and the third electric valve 41 is opened to send the treated waste gas into the waste gas storage pipeline 4 for storage.

[0072] The third electric valve 41 and the second electric valve 31 are closed, and the first electric valve 22 opens the exhaust valve 45 to guide the exhaust gas out of the exhaust gas storage tank 43 through the exhaust gas outlet pipe 44 .

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust gas treatment system suitable for physical and chemical laboratories, characterized by: It comprises an exhaust gas treatment pipeline (1), an exhaust gas exhaust pipeline (2), an exhaust gas recovery pipeline (3) and an exhaust gas storage pipeline (4), wherein: One end of the exhaust gas treatment pipeline (1) is respectively connected to one end of the exhaust gas exhaust pipeline (2), one end of the exhaust gas recovery pipeline (3), and one end of the exhaust gas storage pipeline (4); The waste gas treatment pipeline (1) is used to treat waste gas in the laboratory and to detect the concentration of the treated waste gas, and to selectively send the detected waste gas to the waste gas exhaust pipeline (2) for exhaust or to the waste gas storage pipeline (4) for storage.

2. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 1, characterized in that: The exhaust gas treatment pipeline (1) comprises an activated carbon air filter (11), an exhaust gas output pipeline (12), a first gas concentration sensor (13) and an exhaust fan (14), wherein: One end of the activated carbon air filter (11) is connected to one end of the exhaust gas output pipe (12); The first gas concentration sensor (13) and the exhaust fan (14) are fixedly arranged on one end of the exhaust gas output pipe (12) away from the activated carbon air filter (11), and the first gas concentration sensor (13) is arranged between the exhaust fan (14) and the activated carbon air filter (11); One end of the exhaust gas output pipe (12) away from the activated carbon air filter (11) is connected to one end of the exhaust gas exhaust pipe (2); One end of the exhaust gas recovery pipeline (3) is fixedly arranged on the exhaust gas output pipeline (12) between the exhaust fan (14) and the exhaust gas exhaust pipeline (2) and is in communication with the exhaust gas output pipeline (12); One end of the exhaust gas storage pipeline (4) is fixedly arranged on and connected to the exhaust gas output pipeline (12) between the first gas concentration sensor (13) and the exhaust fan (14).

3. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 2, characterized in that: The exhaust gas exhaust pipeline (2) comprises a second gas concentration sensor (21), a first electric valve (22) and an exhaust pipe (23), wherein: The second gas concentration sensor (21) and the first electric valve (22) are both fixedly arranged on the exhaust pipe (23); One end of the exhaust pipe (23) is in communication with one end of the exhaust gas output pipeline (12) and one end of the exhaust gas recovery pipeline (3).

4. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 3, characterized in that: The exhaust gas recovery pipeline (3) comprises a second electric valve (31) and a recovery pipe (32), wherein: The second electric valve (31) is fixedly arranged on the recovery pipe (32); One end of the recovery pipe (32), one end of the waste gas output pipe (12), and one end of the exhaust pipe (23) are connected via a tee.

5. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 4, characterized in that: The exhaust gas storage pipeline (4) comprises a third electric valve (41), an exhaust gas collecting pipe (42) and an exhaust gas storage box (43), wherein: The third electric valve (41) is fixedly arranged on the exhaust gas collecting pipe (42); One end of the exhaust gas collecting pipe (42) is fixedly connected to and communicated with the exhaust gas storage box (43), and the other end is communicated with the exhaust gas output pipe (12). The third electric valve (41) is located between the exhaust gas collecting pipe (42) and the exhaust gas output pipe (12).

6. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 5, characterized in that: The exhaust gas storage pipeline (4) further includes an exhaust gas outlet pipe (44) and an exhaust valve (45), wherein: One end of the exhaust gas outlet pipe (44) is fixedly arranged on the exhaust gas storage pipeline (4) and is in communication with the exhaust gas storage pipeline (4); The exhaust valve (45) is fixedly arranged on the exhaust gas outlet pipe (44).

7. An exhaust gas treatment system suitable for a physical and chemical laboratory as claimed in claim 2 or 6, characterized in that: The activated carbon air filter (11) comprises a housing (111), an activated carbon filter module (112) and an inspection door (113), wherein: One end of the housing (111) is provided with an air inlet (1101), and the other end is provided with an air outlet (1102), and the air outlet (1102) is fixedly connected to one end of the exhaust gas output pipe (12); Two filter cavities (1103) are formed inside the housing (111), and the two filter cavities (1103) are arranged in mirror images up and down; An airflow channel (1104) is provided between the two filter chambers (1103); one end of the airflow channel (1104) is connected to the air inlet (1101), and the other end is closed; An opening (1105) is vertically penetrated at one opposite end of the two filter chambers (1103), and the opening (1105) passes through one side end of the housing (111) in the horizontal direction; One end of the activated carbon filter module (112) is arranged inside the filter cavity (1103), and the other end is slidably arranged inside the opening (1105) in a horizontal direction, and the interior of the filter cavity (1103) and the air flow channel (1104) are connected through the activated carbon filter module (112); An inspection port (1106) is provided at a side end of the housing (111) and at a position corresponding to the opening (1105), and the activated carbon filter module (112) selectively passes through the inspection port (1106); The inspection door (113) is arranged at the inspection opening (1106) and is hingedly connected to the side end of the housing (111); An air outlet hole (1107) is provided through one end of the two filter cavities (1103) close to the air outlet (1102) in a horizontal direction, and the interior of the filter cavity (1103) and the air outlet (1102) are connected via the air outlet hole (1107).

8. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 7, characterized in that: The activated carbon air filter (11) further comprises a diverter plate (114), wherein: The diverter plate (114) is disposed between the two filter chambers (1103) and is fixedly disposed inside the housing (111).

9. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 8, characterized in that: The activated carbon filter module (112) is provided with slots (1108) on both sides of one end, wherein: Both sides of the opening (1105) are slidably disposed in the card slot (1108).

10. The waste gas treatment system suitable for a physical and chemical laboratory as claimed in claim 9, characterized in that: The inspection door (113) is a transparent glass door.

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