Waste liquid recovery device for biological safety cabinet

Abstract

The utility model relates to the technical field of biosafety cabinets, and provides a waste liquid recovery device for a biosafety cabinet, which comprises a safety cabinet, the bottom of the safety cabinet is fixedly provided with a collection box, and the inner bottom wall of the safety cabinet is provided with a strip-shaped groove; waste liquid is poured into the strip-shaped groove and enters the collecting box, the activated carbon particles are used for adsorbing the waste liquid to remove organic matter and some soluble pollutants, meanwhile, the organic matter in the waste liquid is treated through the biodegradation effect of microorganisms in activated sludge, and therefore the purpose of waste liquid treatment is achieved; by starting an air pump and opening a first valve, gas enters a heating box through an air inlet pipe and is heated through a heating wire, and the heated gas enters a collecting box through a connecting pipe and is used for drying activated carbon particles and activated sludge, so that the activated carbon particles and the activated sludge are effectively prevented from being separated from each other, and the service life of the activated carbon particles and the activated sludge is prolonged. And bacteria are bred in a humid state for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of biological safety cabinets, and specifically relates to a waste liquid recovery device used in biological safety cabinets. Background Art

[0002] The biological safety cabinet is a box-type air purification negative pressure safety device that can prevent the aerosol dispersion of certain dangerous or unknown biological particles during experimental operations. It is widely used in scientific research, teaching, clinical testing and production in the fields of microbiology, biomedicine, genetic engineering, and biological products. It is the most basic safety protection equipment in the first-level protection barrier of laboratory biosafety.

[0003] Known Chinese public authorized patent: (publication number: CN202222989200.7) discloses a biological safety cabinet, including a cabinet and a positive pressure shield, the cabinet including an exhaust fan, the exhaust fan is used to generate a negative pressure channel in the cabinet; the positive pressure shield is installed on the outside of the cabinet, and forms an exhaust channel with the outer wall of the cabinet, the exhaust channel is connected to the exhaust port of the exhaust fan, and the exhaust channel is located outside the negative pressure channel. The biological safety cabinet disclosed in the present invention is provided with a positive pressure shield outside the cabinet, so that the positive pressure shield and the outer wall of the cabinet form an exhaust channel, and the positive pressure airflow generated by the exhaust fan is surrounded by the outside of the negative pressure channel through the exhaust channel. If there is a leak point on the cabinet, there is negative pressure on the inside and positive pressure on the outside of the leak point. Under the action of the internal and external pressure difference, the air will return to the negative pressure channel under the action of negative pressure, which can effectively prevent the leakage of harmful gases.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned biosafety cabinet has the following problems: in the prior art, it is difficult to treat the waste liquid generated during experiments in the biosafety cabinet during use, and it is also difficult to recycle the waste liquid. Therefore, a waste liquid recovery device for a biosafety cabinet is proposed. Utility Model Content

[0005] The utility model provides a waste liquid recovery device for a biosafety cabinet, which solves the problem in the related art that it is difficult to process waste liquid generated during experiments in the biosafety cabinet, and further difficult to recover the waste liquid.

[0006] The technical solution of the utility model is as follows: A waste liquid recovery device for a biological safety cabinet comprises: a safety cabinet, a collection box is fixedly installed at the bottom of the safety cabinet, a strip groove is opened on the inner bottom wall of the safety cabinet, the strip groove is connected to the collection box, and a first hollow mesh plate and a second hollow mesh plate are respectively arranged inside the collection box;

[0007] The interior of the first hollow mesh plate is filled with activated carbon particles, the interior of the second hollow mesh plate is filled with activated sludge, a heating box is fixedly installed on one side of the collecting box, a plurality of heating wires are arranged inside the heating box, a connecting pipe is fixedly installed at the bottom of the heating box, and one end of the connecting pipe extends to the interior of the collecting box;

[0008] A gas collecting hood is fixedly installed on the top of the safety cabinet, an air pump is fixedly installed on one side of the top of the safety cabinet, an input end of the air pump extends to the inside of the gas collecting hood, an output end of the air pump is fixedly connected to an air intake pipe, one end of the air intake pipe extends to the inside of the heating box, and a first valve is provided on the outer side wall of the air intake pipe;

[0009] A filtering mechanism is arranged inside the collection box.

[0010] Preferably, the filtering mechanism includes an activated carbon filter screen and activated carbon filter cotton and a high-efficiency air filter arranged inside the collection box.

[0011] Preferably, the activated carbon filter is located below the activated carbon filter cotton, and the activated carbon filter cotton is located below the high-efficiency air filter.

[0012] Preferably, an air outlet pipe is fixedly mounted on the outer side wall of the air inlet pipe, the air outlet pipe is located on one side of the air pump, and a second valve is provided on the outer side wall of the air outlet pipe.

[0013] Preferably, a door body is hinged on the front side of the safety cabinet, and a handle is fixedly installed on the front side of the door body.

[0014] Preferably, a discharge pipe is fixedly mounted on the bottom of the collection box, and a third valve is provided on the outer side wall of the discharge pipe.

[0015] Preferably, four supporting legs are fixedly mounted on the bottom of the safety cabinet, and the four supporting legs are respectively located at the four corners of the bottom of the safety cabinet.

[0016] The working principle and beneficial effects of the utility model are:

[0017] The waste liquid is poured into a strip trough and enters the interior of a collection box, and activated carbon particles are used to adsorb and remove organic matter and some soluble pollutants from the waste liquid. At the same time, the organic matter in the waste liquid is treated by the biodegradation of microorganisms in the activated sludge, thereby achieving the purpose of waste liquid treatment. After the waste liquid is treated, the air pump is started and the first valve is opened to allow the gas to enter the interior of the heating box through the air inlet pipe, and the gas is heated by the heating wire, so that the heated gas enters the interior of the collection box through the connecting pipe, and is used to dry the activated carbon particles and the activated sludge, effectively preventing the activated carbon particles and the activated sludge from being in a moist state for a long time and breeding bacteria. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cutaway three-dimensional structure of the safety cabinet of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the collection box of the present utility model.

[0022] In the figure: 1. safety cabinet; 2. collecting box; 3. strip trough; 4. first hollow mesh plate; 5. activated carbon particles; 6. second hollow mesh plate; 7. activated sludge; 8. heating box; 9. heating wire; 10. connecting pipe; 11. air collecting hood; 12. air pump; 13. air inlet pipe; 14. first valve; 15. filtering mechanism; 16. air outlet pipe; 17. second valve; 18. door body; 19. handle; 20. discharge pipe; 21. third valve; 22. supporting leg; 150. activated carbon filter; 151. activated carbon filter cotton; 152. high efficiency air filter. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1 - Figure 3 A waste liquid recovery device for a biological safety cabinet comprises: a safety cabinet 1, a collecting box 2 is fixedly installed at the bottom of the safety cabinet 1, a strip groove 3 is opened on the inner bottom wall of the safety cabinet 1, the strip groove 3 is connected to the collecting box 2, and a first hollow mesh plate 4 and a second hollow mesh plate 6 are respectively arranged inside the collecting box 2;

[0026] The first hollow mesh plate 4 is filled with activated carbon particles 5, the second hollow mesh plate 6 is filled with activated sludge 7, a heating box 8 is fixedly installed on one side of the collecting box 2, a plurality of heating wires 9 are arranged inside the heating box 8, a connecting pipe 10 is fixedly installed at the bottom of the heating box 8, and one end of the connecting pipe 10 extends to the inside of the collecting box 2;

[0027] An air collecting hood 11 is fixedly installed on the top of the safety cabinet 1, and an air pump 12 is fixedly installed on one side of the top of the safety cabinet 1. The input end of the air pump 12 extends to the interior of the air collecting hood 11, and the output end of the air pump 12 is fixedly connected to an air intake pipe 13. One end of the air intake pipe 13 extends to the interior of the heating box 8, and a first valve 14 is provided on the outer wall of the air intake pipe 13.

[0028] The utility model provides a technical scheme, which is to pour the waste liquid into the strip trough 3 and enter the interior of the collecting box 2, and use the activated carbon particles 5 to adsorb and remove organic matter and some soluble pollutants from the waste liquid, and at the same time use the biodegradation action of the microorganisms in the activated sludge 7 to treat the organic matter in the waste liquid, thereby achieving the purpose of treating the waste liquid. After the waste liquid is treated, the air pump 12 is started, and the first valve 14 is opened to allow the gas to enter the interior of the heating box 8 through the air inlet pipe 13, and the gas is heated by the heating wire 9, so that the heated gas enters the interior of the collecting box 2 through the connecting pipe 10, and is used to dry the activated carbon particles 5 and the activated sludge 7, thereby effectively preventing the activated carbon particles 5 and the activated sludge 7 from being in a humid state for a long time and breeding bacteria.

[0029] Furthermore, a door body 18 is hinged on the front side of the safety cabinet 1 , and a handle 19 is fixedly installed on the front side of the door body 18 .

[0030] Specifically, the door body 18 is opened by pulling the handle 19, so that the staff can take and put items.

[0031] Furthermore, a discharge pipe 20 is fixedly installed at the bottom of the collection box 2 , and a third valve 21 is provided on the outer side wall of the discharge pipe 20 .

[0032] Specifically, by opening the third valve 21 , the treated waste liquid is discharged through the discharge pipe 20 .

[0033] Furthermore, four supporting legs 22 are fixedly installed on the bottom of the safety cabinet 1 , and the four supporting legs 22 are respectively located at the four corners of the bottom of the safety cabinet 1 .

[0034] Specifically, the support legs 22 are used to support the safety cabinet 1 , thereby effectively improving the stability of the safety cabinet 1 .

[0035] Embodiment 2

[0036] Based on Example 1, in this embodiment: a filtering mechanism 15 is arranged inside the collecting box 2, and the filtering mechanism 15 includes an activated carbon filter mesh 150, an activated carbon filter cotton 151 and a high-efficiency air filter 152 arranged inside the collecting box 2, the activated carbon filter mesh 150 is located below the activated carbon filter cotton 151, and the activated carbon filter cotton 151 is located below the high-efficiency air filter 152.

[0037] The technical solution provided in this embodiment is: an activated carbon filter 150 is used to filter and intercept impurities in the exhaust gas, and an activated carbon filter cotton 151 is used to filter and adsorb the exhaust gas. The exhaust gas can be further filtered through a high-efficiency air filter 152, thereby achieving the purpose of exhaust gas filtering and effectively preventing exhaust gas from polluting the environment.

[0038] Furthermore, an air outlet pipe 16 is fixedly mounted on the outer side wall of the air inlet pipe 13 . The air outlet pipe 16 is located at one side of the air pump 12 . A second valve 17 is disposed on the outer side wall of the air outlet pipe 16 .

[0039] Specifically, the filtered gas is extracted by opening the second valve 17 and starting the air pump 12 , and discharged through the air outlet pipe 16 .

[0040] The above are only preferred embodiments of the present invention and are 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. A waste liquid recovery device for a biological safety cabinet, characterized in that: include: A safety cabinet (1), wherein a collection box (2) is fixedly mounted on the bottom of the safety cabinet (1), a strip groove (3) is provided on the inner bottom wall of the safety cabinet (1), the strip groove (3) is communicated with the collection box (2), and a first hollow mesh panel (4) and a second hollow mesh panel (6) are respectively provided inside the collection box (2); The interior of the first hollow mesh plate (4) is filled with activated carbon particles (5), the interior of the second hollow mesh plate (6) is filled with activated sludge (7), a heating box (8) is fixedly mounted on one side of the collecting box (2), a plurality of heating wires (9) are arranged inside the heating box (8), a connecting pipe (10) is fixedly mounted on the bottom of the heating box (8), and one end of the connecting pipe (10) extends to the interior of the collecting box (2); A gas collecting hood (11) is fixedly mounted on the top of the safety cabinet (1), an air pump (12) is fixedly mounted on one side of the top of the safety cabinet (1), an input end of the air pump (12) extends to the interior of the gas collecting hood (11), an output end of the air pump (12) is fixedly connected to an air intake pipe (13), one end of the air intake pipe (13) extends to the interior of the heating box (8), and a first valve (14) is provided on the outer side wall of the air intake pipe (13); A filtering mechanism (15) is provided inside the collection box (2).

2. A waste liquid recovery device for a biological safety cabinet according to claim 1, characterized in that: The filtering mechanism (15) comprises an activated carbon filter screen (150) and activated carbon filter cotton (151) and a high-efficiency air filter (152) arranged inside the collection box (2).

3. A waste liquid recovery device for a biological safety cabinet according to claim 2, characterized in that: The activated carbon filter net (150) is located below the activated carbon filter cotton (151), and the activated carbon filter cotton (151) is located below the high-efficiency air filter (152).

4. The waste liquid recovery device for a biological safety cabinet according to claim 1, characterized in that: An air outlet pipe (16) is fixedly mounted on the outer side wall of the air inlet pipe (13); the air outlet pipe (16) is located on one side of the air pump (12); and a second valve (17) is provided on the outer side wall of the air outlet pipe (16).

5. The waste liquid recovery device for a biological safety cabinet according to claim 1, characterized in that: A door body (18) is hingedly connected to the front side of the safety cabinet (1), and a handle (19) is fixedly mounted on the front side of the door body (18).

6. A waste liquid recovery device for a biological safety cabinet according to claim 1, characterized in that: A discharge pipe (20) is fixedly mounted on the bottom of the collection box (2), and a third valve (21) is provided on the outer side wall of the discharge pipe (20).

7. The waste liquid recovery device for a biological safety cabinet according to claim 1, characterized in that: Four supporting legs (22) are fixedly mounted on the bottom of the safety cabinet (1), and the four supporting legs (22) are respectively located at the four corners of the bottom of the safety cabinet (1).

Images