Animal laboratory exhaust filtration device

Abstract

The utility model discloses an animal laboratory waste gas filtering device relates to the field of waste gas filtration for animal laboratory, including filter box, the air inlet end fixed mounting of filter box has the air inlet pipe, the exhaust end fixed mounting of filter box has the exhaust pipe, the inside upper and lower slide mounting of one end of filter box close exhaust pipe has the sliding frame, the inside top end board of filter box is equipped with the insertion slot that supplies sliding frame inserts, the inside installation of sliding frame has sterilization mechanism, the top of filter box is installed to the limiting mechanism that sliding frame and sterilization mechanism carry out the location, the inside wall of sliding frame and insertion slot, the inside wall of filter box contact position department installs the sealing ring. The utility model discloses through setting up sterilization mechanism and limiting mechanism, can conveniently distribute or integral replacement to no.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas filtration for animal laboratories, specifically an exhaust gas filtration device for animal laboratories. Background Technology

[0002] Animal laboratories often house laboratory mice and frequently conduct experiments on them, such as injecting them with viruses, and then observe the mice's condition after the injection.

[0003] Therefore, when exhaust gases generated in the laboratory are discharged, it is necessary to prevent viruses from being directly released. Current technologies generally use ultraviolet lamps for sterilization, combined with membrane structures to intercept viruses and bacteria. However, both the membrane structure and the ultraviolet lamps need to be replaced according to actual conditions during long-term use. Existing replacement methods are relatively complex and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide an animal laboratory exhaust gas filtration device in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an animal laboratory exhaust gas filtration device, comprising a filter box, an air inlet pipe fixedly installed at the air inlet end of the filter box, an exhaust pipe fixedly installed at the air outlet end of the filter box, a sliding frame slidably installed inside the filter box near the exhaust pipe, an insertion slot for inserting the sliding frame is provided inside the top plate of the filter box, a sterilization mechanism is installed inside the sliding frame, a limiting mechanism for limiting the sliding frame and the sterilization mechanism is installed on the top of the filter box, and a sealing ring is installed at the contact position between the sliding frame and the inner wall of the insertion slot and the inner wall of the filter box.

[0006] As a further embodiment of this utility model: the sterilization mechanism includes a second sliding frame and a first sliding frame inserted into the sliding frame. A first membrane is fixedly installed on the inner wall of the first sliding frame, and a second membrane is fixedly installed on the inner wall of the second sliding frame. A square groove is provided on the top plate of the sliding frame for the second and first sliding frames to be inserted. Sealing rings are installed at the contact positions between the second and first sliding frames and the inner wall of the square groove and the inner wall of the sliding frame.

[0007] As a further embodiment of this utility model: the sterilization mechanism further includes an upper lamp holder that is threadedly connected to the top plate of the sliding frame and a lower lamp holder that is fixedly installed on the top of the bottom plate of the sliding frame. An ultraviolet lamp tube that is inserted into the lower lamp holder is installed on the inner wall of the upper lamp holder. The second film, the first film and the ultraviolet lamp tube are distributed alternately.

[0008] As a further improvement of this utility model, handles are fixedly installed at the top of the second sliding frame, the first sliding frame, and the sliding frame.

[0009] As a further embodiment of this utility model: the limiting mechanism includes two fixed shafts fixedly installed on the top of the filter box, and a limiting plate for limiting the sliding frame, the second sliding frame and the first sliding frame is rotatably installed on the outer wall of the thin shaft portion of the fixed shaft. A rubber ring for increasing resistance is installed on the inner wall of the rotatable connection between the limiting plate and the fixed shaft.

[0010] As a further improvement of this utility model, the filter box has an inner chamber for holding activated carbon.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By setting up sterilization and limiting mechanisms, the No. 1 film, No. 2 film and ultraviolet lamp tube can be easily distributed or replaced as a whole, thereby further improving replacement efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the installation of the sterilization mechanism of this utility model.

[0016] In the diagram: 1. Filter box; 2. Air inlet pipe; 3. Air outlet pipe; 4. Insertion slot; 5. Sliding frame; 6. Fixed shaft; 7. Limiting plate; 8. Inner chamber; 9. Second sliding frame; 10. First sliding frame; 11. Upper lamp holder; 12. Lower lamp holder; 13. Ultraviolet lamp tube; 14. First membrane; 15. Second membrane; 16. Handle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3In this embodiment of the present invention, an animal laboratory exhaust gas filtration device includes a filter box 1. An air inlet pipe 2 is fixedly installed at the air inlet end of the filter box 1, and an exhaust pipe 3 is fixedly installed at the exhaust end of the filter box 1. A sliding frame 5 is slidably installed inside the filter box 1 near the exhaust pipe 3. An insertion slot 4 for inserting the sliding frame 5 is provided inside the top plate of the filter box 1. A sterilization mechanism is installed inside the sliding frame 5. A limiting mechanism for limiting the sliding frame 5 and the sterilization mechanism is installed on the top of the filter box 1. A sealing ring is installed at the contact position between the sliding frame 5 and the inner wall of the insertion slot 4 and the inner wall of the filter box 1. The filter box 1 has an inner chamber 8 for holding activated carbon.

[0019] In this embodiment: First, the exhaust fan installed in the animal laboratory operates to draw the gas out of the laboratory. The gas in the laboratory is discharged into the interior of the filter box 1 through the pipe, and comes into contact with the activated carbon in the inner chamber 8. The activated carbon adsorbs the experimental volatiles (such as chemical reagent waste gas) in the exhaust air, and the animal bacteria or viruses contained in the waste gas are blocked by the sterilization mechanism after passing through the activated carbon, and are gradually killed after being blocked, so as to prevent the viruses and bacteria carried by the animals from being directly discharged into the air.

[0020] When it is necessary to replace the replaceable parts of the sterilization mechanism, the limiting mechanism can be rotated to open it, the replaceable part can be taken out, and then a new one can be replaced.

[0021] Please refer to this carefully. Figure 1 , Figure 2 and Figure 3 The sterilization mechanism includes a second sliding frame 9 and a first sliding frame 10 inserted into the sliding frame 5. A first membrane 14 is fixedly installed on the inner wall of the first sliding frame 10, and a second membrane 15 is fixedly installed on the inner wall of the second sliding frame 9. A square groove is provided on the top plate of the sliding frame 5 for the second sliding frame 9 and the first sliding frame 10 to be inserted. Sealing rings are installed at the contact positions between the second sliding frame 9, the first sliding frame 10 and the inner wall of the square groove and the inner wall of the sliding frame 5. The sterilization mechanism also includes an upper lamp holder 11 that is threadedly connected to the inside of the top plate of the sliding frame 5 and a lower lamp holder 12 that is fixedly installed on the top of the bottom plate of the sliding frame 5. An ultraviolet lamp tube 13 that is inserted into the lower lamp holder 12 is installed on the inner wall of the upper lamp holder 11. The second membrane 15, the first membrane 14 and the ultraviolet lamp tube 13 are distributed alternately.

[0022] In this embodiment: after the exhaust air passes through the inner chamber 8, it is intercepted by membrane 14 and membrane 15 in the sterilization mechanism. The powered ultraviolet lamp 13 emits UVC band of 240-280 nanometers, which will irradiate the bacteria and viruses for a long time, inactivating the bacteria and viruses and preventing the bacteria and viruses from being directly discharged into the air.

[0023] When it is necessary to replace No. 1 film 14 and No. 2 film 15 (e.g., due to damage after long-term use), turn to open the limiting mechanism, then pull No. 1 sliding frame 10 and No. 2 sliding frame 9 upward to move them upward and pull out No. 1 film 14 and No. 2 film 15. After pulling them out, insert the new No. 1 sliding frame 10 and No. 2 sliding frame 9 through the square slot to complete the replacement.

[0024] When the ultraviolet lamp tube 13 is damaged, the upper lamp holder 11 is rotated to separate the upper lamp holder 11 from the screw hole on the top plate of the sliding frame 5. Then, the upper lamp holder 11 can be pulled upward to separate from the screw hole, which will also cause the ultraviolet lamp tube 13 to separate from the lower lamp holder 12. After removal, the ultraviolet lamp tube 13 is rotated to separate the ultraviolet lamp tube 13 from the inner wall of the upper lamp holder 11, so that a new ultraviolet lamp tube 13 can be replaced. After replacement, it can be inserted and connected with the lower lamp holder 12.

[0025] It should be noted that membrane 14 and membrane 15 are both polytetrafluoroethylene membranes with the following structural characteristics: pore size: 0.1-0.5um, which can effectively physically intercept viruses and bacteria.

[0026] Please refer to the diagram carefully. The top of sliding frame 9, sliding frame 10, and sliding frame 5 are all fixedly equipped with handles 16.

[0027] In this embodiment: a conductive post electrically connected to the lower lamp holder 12 is fixedly installed at the bottom of the bottom plate of the sliding frame 5, and a groove for inserting the conductive post is installed at the docking position of the filter box 1 and the conductive post. A conductive sheet is installed at the bottom of the inner wall of the groove. After the sliding frame 5 is fully inserted, the conductive post and the conductive sheet are docked. The conductive sheet is electrically connected to the negative terminal of the external power supply through a wire. Similarly, the upper lamp holder 11 is electrically connected to the positive terminal of the power supply through a wire. This allows the sliding frame 5 to be removed by the handle 16 after the limiting mechanism is rotated and opened. The entire sterilization mechanism can be removed directly, and a new sliding frame 5 with the sterilization mechanism installed can be inserted again. This allows for convenient replacement after the service life is reached.

[0028] Please refer to this carefully. Figure 2 The limiting mechanism includes two fixed shafts 6 fixedly installed at the top of the filter box 1. The outer wall of the thin shaft part of the fixed shaft 6 is rotatably mounted with a limiting plate 7 to limit the sliding frame 5, the second sliding frame 9, and the first sliding frame 10. The inner wall of the rotatable connection between the limiting plate 7 and the fixed shaft 6 is equipped with a rubber ring to increase resistance.

[0029] In this embodiment, the design of the limiting mechanism can simultaneously limit the sliding frame 5, the first sliding frame 10, and the second sliding frame 9. According to the opening angle of the limiting plate 7, the limiting of the sliding frame 5, the first sliding frame 10, and the second sliding frame 9 can be released. For example, when the first sliding frame 10 needs to be removed, the rotation angle of the limiting plate 7 after rotation is small, and it only needs to be misaligned with the first sliding frame 10. At this time, the limiting plate 7 still overlaps with the second sliding frame 9 and the sliding frame 5, and can continue to achieve limiting. This can avoid the problem of the sliding frame 5 moving upward together when the first sliding frame 10 or the second sliding frame 9 is pulled out.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An animal laboratory exhaust gas filtration device, comprising a filter box (1), characterized in that, An air inlet pipe (2) is fixedly installed at the air inlet end of the filter box (1), and an exhaust pipe (3) is fixedly installed at the exhaust end of the filter box (1). A sliding frame (5) is slidably installed inside the filter box (1) near the exhaust pipe (3). An insertion slot (4) for inserting the sliding frame (5) is opened inside the top plate of the filter box (1). A sterilization mechanism is installed inside the sliding frame (5). A limiting mechanism for limiting the sliding frame (5) and the sterilization mechanism is installed on the top of the filter box (1). A sealing ring is installed at the contact position between the sliding frame (5) and the inner wall of the insertion slot (4) and the inner wall of the filter box (1).

2. The animal laboratory exhaust gas filtration device according to claim 1, characterized in that, The sterilization mechanism includes a second sliding frame (9) and a first sliding frame (10) inserted into the sliding frame (5). A first membrane (14) is fixedly installed on the inner wall of the first sliding frame (10), and a second membrane (15) is fixedly installed on the inner wall of the second sliding frame (9). A square groove is provided on the top plate of the sliding frame (5) for the second sliding frame (9) and the first sliding frame (10) to be inserted. Sealing rings are installed at the contact positions between the second sliding frame (9), the first sliding frame (10) and the inner wall of the square groove and the inner wall of the sliding frame (5).

3. The animal laboratory exhaust gas filtration device according to claim 2, characterized in that, The sterilization mechanism also includes an upper lamp holder (11) that is threadedly connected to the top plate of the sliding frame (5) and a lower lamp holder (12) that is fixedly installed on the top of the bottom plate of the sliding frame (5). The inner wall of the upper lamp holder (11) is equipped with an ultraviolet lamp tube (13) that is inserted into the lower lamp holder (12). The second membrane (15), the first membrane (14) and the ultraviolet lamp tube (13) are distributed alternately.

4. The animal laboratory exhaust gas filtration device according to claim 3, characterized in that, The top of the second sliding frame (9), the first sliding frame (10), and the sliding frame (5) are all fixedly equipped with handles (16).

5. The animal laboratory exhaust gas filtration device according to claim 4, characterized in that, The limiting mechanism includes two fixed shafts (6) fixedly installed at the top of the filter box (1). The outer wall of the thin shaft part of the fixed shaft (6) is rotatably mounted with a limiting plate (7) to limit the sliding frame (5), the second sliding frame (9) and the first sliding frame (10). The inner wall of the rotatable connection between the limiting plate (7) and the fixed shaft (6) is equipped with a rubber ring to increase resistance.

6. The animal laboratory exhaust gas filtration device according to claim 1, characterized in that, The filter box (1) has an inner chamber (8) for holding activated carbon.

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