Constant-pressure purification and ventilation device for PCR (Polymerase Chain Reaction) laboratory

Abstract

The utility model discloses a constant pressure purification ventilation device for a PCR laboratory, which comprises a tuyere shell, a space is reserved in the tuyere shell, one side of the top of the tuyere shell is connected with a pipeline, the pipeline sequentially penetrates through a purification disinfection valve and an air volume adjusting valve, and a ventilation hood is arranged at the bottom of the tuyere shell. According to the utility model, the purification and disinfection valve and the air volume regulating valve are adopted for common treatment, the air quality requirement required in the laboratory is perfected, and compared with the mode of directly controlling air exchange and air supply by adopting an engine, the use of the two valves ensures the air quality in the laboratory, and avoids pollution caused by aerosol diffusion.

Description

Technical Field

[0001] The utility model relates to the field of environmental ventilation, in particular to a constant pressure purification ventilation device for a PCR laboratory. Background Art

[0002] When conducting experiments in a PCR laboratory, the use of ventilation devices can effectively control pressure changes during the experimental testing process to prevent contamination caused by aerosol diffusion and avoid contamination of reagents by external air. Existing ventilation devices often use engines to directly control air supply and ventilation, which can cause pressure fluctuations and contamination of the laboratory environment. These problems not only cause contamination by aerosol diffusion, but also contaminate test samples due to outdoor air. Therefore, it is necessary to improve and optimize the constant pressure purification ventilation devices used in PCR laboratories. Utility Model Content

[0003] The purpose of the utility model is to provide a constant pressure purification ventilation device for a PCR laboratory, so as to solve the problem of pollution caused by aerosol diffusion in a laboratory with strict environmental requirements.

[0004] The utility model mainly provides a constant pressure purification ventilation device for a PCR laboratory, comprising an air outlet shell, the interior of the air outlet shell is left hollow, a pipe is connected to one side of the top of the air outlet shell, the pipe passes through a purification and disinfection valve and an air volume regulating valve in sequence, and a ventilation hood is provided at the bottom of the air outlet shell.

[0005] Further technology of this utility model:

[0006] Preferably, an exhaust port is provided at the bottom of the air vent shell, and the exhaust port is connected to the ventilation hood; an air inlet is provided on one side of the top of the air vent shell, and the ventilation port is connected to the duct exhaust port.

[0007] Preferably, the purification and disinfection valve is hollowed out to form a first groove, a filter baffle is provided in the first groove, a disinfection and purification membrane is provided on one side of the filter baffle, and a switch is provided on the top of the purification and disinfection valve.

[0008] Preferably, one end of the first groove is connected to the first pipe, and the other end of the first groove is connected to the second pipe.

[0009] Preferably, the air volume regulating valve is hollowed out to provide a second groove, a rotating column is provided in the center of the second groove, two grid plates are connected to the rotating column, and an adjusting switch is provided on the top of the air volume regulating valve.

[0010] Preferably, one end of the second groove is connected to the second pipe, and the other end of the second groove is connected to the third pipe.

[0011] Preferably, a pipe air inlet is provided at the top of the third pipe, and an engine is provided inside the third pipe for exchanging air with the outside.

[0012] The beneficial effects of the utility model are:

[0013] The utility model adopts the method of combining purification and disinfection valve with air volume regulating valve. Compared with the method of directly controlling air supply and air exchange by engine, the use of purification and disinfection valve can protect the environment in the laboratory:

[0014] By using an air volume regulating valve, the pressure in the laboratory can be more stable compared to the method of controlling the air volume with an engine, thus avoiding contamination caused by aerosol diffusion.

[0015] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the ventilation device of the present invention;

[0017] Figure 2 This is a structural diagram of one side of the purification and disinfection valve of the utility model;

[0018] Figure 3 This is a structural diagram of the other side of the purification and disinfection valve of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the air volume regulating valve of the utility model;

[0020] In the figure: 10, air outlet housing; 101, air inlet; 102, air outlet; 20, pipe; 201, first pipe; 202, second pipe; 203, third pipe; 204, pipe exhaust outlet; 205, pipe air inlet; 30, ventilation hood; 40, purification and disinfection valve; 401, filter baffle; 402, disinfection and purification membrane; 403, switch; 404, first groove; 50, air volume control valve; 501, adjustment switch; 502, rotating column; 503 grid plate; 504, second groove. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 In this embodiment, a constant pressure purification and ventilation device for a PCR laboratory is provided, including an air outlet housing 10, the interior of the air outlet housing 10 is left hollow, a pipe 20 is connected to one side of the top of the air outlet housing 10, and the pipe 20 passes through a purification and disinfection valve 40 and an air volume regulating valve 50 in sequence. A ventilation hood 30 is provided at the bottom of the air outlet housing 10.

[0023] Construction method

[0024] Specifically, such as Figure 1 As shown, the bottom of the air vent housing 10 is left hollow and connected to the ventilation hood 30, and the top side of the air vent housing 10 is connected to the water pipe 20. The water pipe 20 passes through the purification and disinfection valve 40 and the air volume regulating valve 50 in sequence. When the ventilation device is turned on, air is supplied by the engine, and the air volume regulating valve 50 is used to adjust the indoor pressure to a constant level. The outdoor air is then purified and disinfected through the purification and disinfection valve 40 and then introduced into the laboratory.

[0025] Specifically, such as Figure 2-3 As shown, the purification and disinfection valve 40 is hollowed out to form a first groove 404. A filter baffle 401 is provided in the first groove 404. When outdoor air passes through, the air contains dust and impurities, so these dust and impurities are blocked by the filter baffle 401. A disinfection and purification membrane 402 is also provided in the first groove 404 to ensure that the required sterile environment is maintained in the laboratory.

[0026] Specifically, such as Figure 4 As shown, the air volume regulating valve 50 is hollowed out inside and provided with a second groove 504, and a rotating column 502 is provided in the second groove 504. Two grid plates 503 are connected to the rotating column 502. An adjusting switch 501 is provided outside the air volume regulating valve 50. By adjusting the position of the grid plate 503, the air volume passing through is controlled, thereby controlling the pressure in the laboratory to meet the required requirements.

[0027] The utility model provides a constant pressure purification and ventilation device for a PCR laboratory. During laboratory operation, the regulating switch 501 of the air volume regulating valve 50 is set to a specified position to control the pressure in the laboratory to be constant to avoid contamination caused by aerosol diffusion. Then, the switch 403 of the purification and disinfection valve 40 is opened to purify, disinfect and filter the air sent in from the outside through the purification and disinfection valve 40, thereby controlling the integrity of the test samples in the laboratory.

[0028] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0029] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A constant pressure purification ventilation device for PCR laboratory, characterized in that: The air vent housing (10) comprises an air vent housing (10), wherein the interior of the air vent housing (10) is left hollow, a pipe (20) is connected to one side of the top of the air vent housing (10), and the pipe (20) passes through a purification and disinfection valve (40) and an air volume regulating valve (50) in sequence, and a ventilation hood (30) is provided at the bottom of the air vent housing (10).

2. A constant pressure purification ventilation device for PCR laboratory according to claim 1, characterized in that: An air outlet (102) is provided at the bottom of the air outlet housing (10), and the air outlet (102) is connected to the ventilation hood (30). An air inlet (101) is provided on one side of the top of the air outlet housing (10), and the air inlet (101) is connected to the duct air outlet (204).

3. A constant pressure purification ventilation device for PCR laboratory according to claim 1, characterized in that: The purification and disinfection valve (40) is hollowed out to form a first groove (404), a filter baffle (401) is provided in the first groove (404), a disinfection and purification membrane (402) is provided on one side of the filter baffle (401), and a switch (403) is provided on the top of the purification and disinfection valve (40).

4. A constant pressure purification ventilation device for PCR laboratory according to claim 3, characterized in that: One end of the first groove (404) is connected to the first pipe (201), and the other end of the first groove (404) is connected to the second pipe (202).

5. A constant pressure purification ventilation device for PCR laboratory according to claim 1, characterized in that: The air volume regulating valve (50) is hollowed out to form a second groove (504), a rotating column (502) is provided in the center of the second groove (504), two grid plates (503) are connected to the rotating column (502), and an adjusting switch (501) is provided on the top of the air volume regulating valve (50).

6. A constant pressure purification ventilation device for PCR laboratory according to claim 5, characterized in that: One end of the second groove (504) is connected to the second pipe (202), and the other end of the second groove (504) is connected to the third pipe (203).

7. A constant pressure purification ventilation device for PCR laboratory according to claim 6, characterized in that: The top of the third pipe (203) is provided with a pipe air inlet (205), and an engine is provided inside the third pipe (203) for exchanging air with the outside.

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