Sterile ventilation equipment for laboratory

Abstract

The utility model relates to the technical field of ventilation equipment, and discloses sterile ventilation equipment for a laboratory, which comprises an inlet air door, one end of the inlet air door is connected with a filter component through a bolt, one end of the filter component is connected with a rectangular frame body, and the inner wall of the rectangular frame body is connected with a support plate through a bolt. The outer surface of the support plate is connected with an ultraviolet lamp, one end of the rectangular frame body is connected with an air suction cover body through a bolt, one end of the air suction cover body is fixedly connected with a fan, and an air outlet of the fan is connected with an air outlet cover body. According to the utility model, the filtering assembly adopts a convenient detachable structure, so that the filtering plate is convenient to replace; a gear is driven to rotate through a knob, so that a toothed bar is linked with a sleeve rod and an insertion block to be pulled out from an insertion groove, and a frame plate and a filter plate can be quickly taken out through a handle; during installation, the guide groove is aligned for insertion, the pressure spring automatically pushes the insertion block for fixation, disassembly and installation can be completed without professional tools, and operation is simple and fast.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, specifically a sterile ventilation and air exchange device for a laboratory. Background Technology

[0002] In modern scientific research and testing activities, laboratories have extremely high requirements for environmental sterility. Whether it's microbial culture, cell experiments, or precise chemical analysis, airborne bacteria, dust particles, and other contaminants can interfere with the experimental process, leading to biased results, or even serious consequences such as sample contamination and experimental failure. Therefore, efficient and reliable sterile ventilation equipment is a key facility for ensuring the safe operation of laboratories and the accuracy of experimental results.

[0003] Currently, most commercially available sterile ventilation systems for laboratories suffer from inconvenient filter replacement. Most systems employ a one-piece sealed structure, fixing the filter inside the equipment. Replacement requires specialized tools to disassemble the outer casing, a cumbersome and time-consuming process. Furthermore, because the filter is tightly connected to the internal structure, disassembly can easily damage the component, increasing maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a sterile ventilation and air exchange device for laboratories, which has the advantages of good air filtration effect and easy replacement of filter components, thus solving the above-mentioned technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sterile ventilation and air exchange device for a laboratory, including an inlet damper, a filter assembly connected to one end of the inlet damper by bolts, a rectangular frame connected to one end of the filter assembly, a support plate connected to the inner wall of the rectangular frame by bolts, an ultraviolet lamp connected to the outer surface of the support plate, an air suction hood connected to one end of the rectangular frame by bolts, a fan fixedly connected to one end of the air suction hood, and an air outlet hood connected to the air outlet of the fan;

[0008] The filter assembly includes a housing, a guide groove plate fixedly connected to the inner wall of the housing, a positioning strip slidably connected inside the guide groove plate, a frame plate fixedly connected to the outer surface of the positioning strip, a filter plate fixedly connected to the inner wall of the frame plate, a handle fixedly connected to the outer side of the frame plate, and slots provided on the top and bottom surfaces of the frame plate. A side block is fixedly connected to the inner wall of the housing, and a sliding sleeve is connected to the inner wall of the housing by screws. A sleeve rod is slidably connected inside the side block, an insert block is fixedly connected to the bottom end of the sleeve rod, and a transverse rod is fixedly connected to the top end of the sleeve rod. A gear is fixedly connected to one end of the transverse rod, and a gear meshes with the gear. A knob is connected to the center of the end face of the gear, and a compression spring is sleeved on the outer surface of the sleeve rod.

[0009] Preferably, the housing and the inlet damper are connected by a through bolt, and an airflow dispersion plate is also clamped and connected between the housing and the inlet damper.

[0010] Preferably, the filter plate has a multi-layer composite structure, including a primary filter layer, a high-efficiency filter layer and an activated carbon adsorption layer; the primary filter layer uses fiber filter material with a pore size of 5-10μm, and the high-efficiency filter layer is a HEPA filter.

[0011] Preferably, the insert block is inserted into the interior of the slot, the inner wall of the sliding sleeve slides in contact with the toothed rod, the gear meshes with two toothed rods around its axis, one end of the compression spring abuts against the insert block, and the other end of the compression spring abuts against the side block.

[0012] Preferably, one end of the housing relative to the inlet damper is bolted to a rectangular frame, and a plurality of equally spaced airflow dispersion plates are welded onto the inner wall of the rectangular frame.

[0013] Preferably, there are two support plates, and multiple ultraviolet lamps are installed between the two support plates, with the multiple ultraviolet lamps interspersed inside the airflow dispersion plate.

[0014] Compared with the prior art, this utility model provides a sterile ventilation and air exchange device for laboratories, which has the following beneficial effects:

[0015] 1. This utility model achieves efficient air purification by combining a multi-layer composite filter plate with an ultraviolet lamp. The filter plate includes a primary filter layer, a high-efficiency filter layer, and an activated carbon adsorption layer, which can sequentially trap large particulate pollutants, filter fine particles and microorganisms, and adsorb harmful gases, forming a multi-stage filtration system. The airflow dispersion plate inside the rectangular frame, in conjunction with the ultraviolet lamp, can evenly disperse the airflow and destroy the DNA of microorganisms through ultraviolet irradiation, significantly improving the efficiency and precision of air filtration and sterilization, and ensuring that the laboratory meets the sterility requirements.

[0016] 2. The filter assembly in this utility model adopts a convenient detachable structure, which facilitates the replacement of the filter plate. By rotating the knob to drive the gear, the gear linkage sleeve and the insert block can be pulled out from the slot, and the frame plate and filter plate can be quickly removed by the handle. During installation, the insert is aligned with the guide groove and inserted. The compression spring automatically pushes the insert block to fix it. Disassembly and installation can be completed without professional tools. The operation is simple and quick, which reduces maintenance time and avoids damage to parts caused by disassembly, thus reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 This is an exploded view of the filter assembly and the inlet damper in the structure of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the filter component in the structure of this utility model;

[0020] Figure 4 The structure of this utility model Figure 3 A magnified view of part A in the diagram;

[0021] Figure 5 This is a cross-sectional view of the rectangular frame in the structure of this utility model.

[0022] The components are as follows: 1. Inlet damper; 2. Filter assembly; 21. Housing; 22. Guide groove plate; 23. Positioning strip; 24. Frame plate; 25. Filter plate; 26. Handle; 27. Slot; 28. Side block; 29. ​​Sliding sleeve; 210. Sleeve rod; 211. Insert block; 212. Horizontal rod; 213. Toothed rod; 214. Gear; 215. Knob; 216. Compression spring; 3. Rectangular frame; 4. Support plate; 5. Ultraviolet lamp; 6. Suction hood; 7. Fan; 8. Exhaust hood; 9. Airflow dispersion plate one; 10. Airflow dispersion plate two. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-5A sterile ventilation and air exchange device for a laboratory includes an inlet damper 1, a filter assembly 2 connected to one end of the inlet damper 1 by bolts, a rectangular frame 3 connected to one end of the filter assembly 2, a support plate 4 connected to the inner wall of the rectangular frame 3 by bolts, an ultraviolet lamp 5 connected to the outer surface of the support plate 4, an air suction hood 6 connected to one end of the rectangular frame 3 by bolts, a fan 7 fixedly connected to one end of the air suction hood 6, and an air outlet hood 8 connected to the air outlet of the fan 7.

[0025] The filter assembly 2 includes a housing 21. A guide groove plate 22 is fixedly connected to the inner wall of the housing 21. A positioning strip 23 is slidably connected inside the guide groove plate 22. A frame plate 24 is fixedly connected to the outer surface of the positioning strip 23. A filter plate 25 is fixedly connected to the inner wall of the frame plate 24. A handle 26 is fixedly connected to the outer side of the frame plate 24. Slots 27 are provided on the top and bottom surfaces of the frame plate 24. A side block 28 is fixedly connected to the inner wall of the housing 21. A sliding sleeve 29 is connected to the inner wall of the housing 21 by screws. A sleeve rod 210 is slidably connected inside the side block 28. An insert block 211 is fixedly connected to the bottom end of the sleeve rod 210. A transverse rod 212 is fixedly connected to the top end of the sleeve rod 210. A gear 213 is fixedly connected to one end of the transverse rod 212. A gear 214 is meshed with the gear 213. A knob 215 is connected to the center of the end face of the gear 214. A compression spring 216 is sleeved on the outer surface of the sleeve rod 210.

[0026] Specifically, the housing 21 is connected to the inlet damper 1 by a through bolt, and an airflow dispersion plate 9 is also clamped and connected between the housing 21 and the inlet damper 1.

[0027] The advantage is that an airflow dispersion plate 9 is provided between the housing 21 and the inlet damper 1, which makes the airflow into the filter assembly 2 more uniform. Through this uniform distribution, the airflow can fully contact the filter plate 25, thereby improving the filtration effect, ensuring that pollutants in the air are removed more effectively, and providing a cleaner sterile environment for the laboratory.

[0028] Specifically, the filter plate 25 has a multi-layer composite structure, including a primary filter layer, a high-efficiency filter layer and an activated carbon adsorption layer; the primary filter layer uses fiber filter material with a pore size of 5-10μm, and the high-efficiency filter layer is a HEPA filter.

[0029] The advantages are that the primary filtration layer, through fiber filter media with a pore size of 5-10μm, can first trap larger particulate pollutants in the air (such as dust, hair, etc.), reducing the burden on subsequent filtration layers; the HEPA filter of the high-efficiency filtration layer can efficiently filter out fine particles larger than 0.3μm (including bacteria, viruses, and other microorganisms), achieving high-precision air purification; the activated carbon adsorption layer removes harmful gases (such as formaldehyde, odors, etc.) and volatile organic compounds (VOCs) in the air through adsorption; the three-layer structure works synergistically to form a multi-stage filtration system, effectively filtering particulate pollutants, microorganisms, and harmful gases in the air, significantly improving the air purification effect, and helping the laboratory environment meet strict sterility requirements.

[0030] Specifically, the insert 211 is inserted into the interior of the slot 27, the inner wall of the sliding sleeve 29 slides in contact with the toothed rod 213, the gear 214 meshes with two toothed rods 213 around its axis, one end of the compression spring 216 abuts against the insert 211, and the other end of the compression spring 216 abuts against the side block 28.

[0031] The advantages are that when the filter plate 25 needs to be replaced after prolonged use due to the accumulation of dust and bacteria, turning the knob 215 will drive the gear 214 to rotate. The gear 214 will drive the two meshing racks 213 to move relative to each other. In this way, the two racks 213 will drive the transverse rod 212, which will drive the sleeve rod 210. The sleeve rod 210 will drive the insert block 211 to be pulled out from the slot 27. At this time, the frame plate 24 is no longer fixed. By pulling the handle 26, the frame plate 24 can be moved, and the frame plate 24 will drive the filter plate 25 to be pulled out from the inside of the housing 21. When a new filter plate 25 needs to be installed, the positioning strip 23 is aligned with the guide groove plate 22 and inserted. The frame plate 24 will then smoothly enter the inside of the housing 21. Under the action of the compression spring 216, the insert block 211 will be inserted into the slot 27. The overall structure facilitates the quick replacement of the filter plate 25 and other components in the filter assembly 2.

[0032] Specifically, the end of the housing 21 relative to the inlet damper 1 is bolted to the rectangular frame 3, and several equally spaced airflow dispersion plates 10 are welded to the inner wall of the rectangular frame 3.

[0033] Specifically, there are two support plates 4, and multiple ultraviolet lamps 5 are installed between the two support plates 4. The multiple ultraviolet lamps 5 are interspersed inside the airflow dispersion plate 2 10.

[0034] The advantages are that the airflow dispersion plates 10, which are welded to the inner wall of the rectangular frame 3 at equal intervals, can further disperse the airflow after passing through the filter component 2 evenly, avoiding the problem of concentrated airflow leading to excessively high local flow rates or insufficient purification, and ensuring that the airflow forms a stable and uniform flow state within the rectangular frame. On this basis, a support plate 4 and an ultraviolet lamp 5 are set up. The support plate 4 is used to fix the ultraviolet lamp 5, so that the ultraviolet lamp 5 is evenly distributed within the rectangular frame 3. The ultraviolet lamp 5 can irradiate microorganisms (such as bacteria and viruses) in the airflow by emitting ultraviolet light, destroying their DNA structure and achieving the effect of sterilization and disinfection. The combination of the airflow dispersion plates 10, the support plate 4, and the ultraviolet lamp 5 can not only ensure that the airflow comes into uniform contact with the ultraviolet lamp 5, but also improve the thoroughness of sterilization through sufficient ultraviolet irradiation, jointly ensuring that the air after ventilation in the laboratory meets the sterility standard.

[0035] In use, firstly, by connecting the inlet damper 1 to the air inlet end of the laboratory ventilation pipe and the outlet hood 8 to the air outlet end of the laboratory ventilation pipe, the fan 7 is started to create negative pressure at the inlet damper 1 to draw in outside air. Next, after passing through the inlet damper 1, the air is dispersed by the airflow dispersion plate 9 and enters the interior of the housing 21. It then passes through the primary filtration layer (retaining larger particles of 5-10μm), the high-efficiency filtration layer (HEPA filter to filter fine particles and microorganisms larger than 0.3μm), and the activated carbon adsorption layer (removing harmful gases and odors) of the filter plate 25 in sequence, completing multi-stage filtration. The filtered air enters the rectangular frame 3, where the airflow is further evenly dispersed by the airflow dispersion plates 10 arranged at equal intervals on the inner wall. Subsequently, the evenly flowing air passes through the ultraviolet lamp 5 fixed by the support plate 4, using ultraviolet irradiation to destroy the DNA structure of microorganisms, achieving sterilization and disinfection. Finally, the sterilized air enters the fan 7 through the suction hood 6 and is discharged into the laboratory ventilation pipe through the outlet hood 8, completing the entire process of sterile ventilation.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sterile ventilation system for a laboratory, comprising an inlet damper (1), characterized in that: One end of the inlet damper (1) is bolted to a filter assembly (2), one end of the filter assembly (2) is bolted to a rectangular frame (3), a support plate (4) is bolted to the inner wall of the rectangular frame (3), an ultraviolet lamp (5) is bolted to the outer surface of the support plate (4), a suction hood (6) is bolted to one end of the rectangular frame (3), a fan (7) is fixedly connected to one end of the suction hood (6), and an outlet hood (8) is connected to the outlet of the fan (7). The filter assembly (2) includes a housing (21), a guide groove plate (22) fixedly connected to the inner wall of the housing (21), a positioning strip (23) slidably connected inside the guide groove plate (22), a frame plate (24) fixedly connected to the outer surface of the positioning strip (23), a filter plate (25) fixedly connected to the inner wall of the frame plate (24), a handle (26) fixedly connected to the outer side of the frame plate (24), and slots (27) provided on the top and bottom surfaces of the frame plate (24). A side block (28) is fixedly connected to the inner wall of the housing (21). A sliding sleeve (29) is connected to the inner wall of the body (21) by screws. A sleeve rod (210) is slidably connected inside the side block (28). An insert block (211) is fixedly connected to the bottom end of the sleeve rod (210). A transverse rod (212) is fixedly connected to the top end of the sleeve rod (210). A toothed rod (213) is fixedly connected to one end of the transverse rod (212). A gear (214) is meshed with the toothed rod (213). A knob (215) is connected to the center of the end face of the gear (214). A compression spring (216) is sleeved on the outer surface of the sleeve rod (210).

2. The sterile ventilation and air exchange equipment for a laboratory according to claim 1, characterized in that: The housing (21) is connected to the inlet damper (1) by a through bolt, and an airflow dispersion plate (9) is also clamped and connected between the housing (21) and the inlet damper (1).

3. The sterile ventilation and air exchange equipment for a laboratory according to claim 1, characterized in that: The filter plate (25) has a multi-layer composite structure, including a primary filter layer, a high-efficiency filter layer and an activated carbon adsorption layer; the primary filter layer uses fiber filter material with a pore size of 5-10μm, and the high-efficiency filter layer is a HEPA filter.

4. The sterile ventilation and air exchange equipment for a laboratory according to claim 1, characterized in that: The insert (211) is inserted into the interior of the slot (27), the inner wall of the sliding sleeve (29) slides in contact with the toothed rod (213), the gear (214) meshes with two toothed rods (213) around its axis, one end of the compression spring (216) abuts against the insert (211), and the other end of the compression spring (216) abuts against the side block (28).

5. A sterile ventilation and air exchange device for a laboratory according to claim 1, characterized in that: The shell (21) is bolted to a rectangular frame (3) at one end relative to the inlet damper (1). Several airflow dispersion plates (10) are welded to the inner wall of the rectangular frame (3) at equal intervals.

6. A sterile ventilation and air exchange device for a laboratory according to claim 5, characterized in that: There are two support plates (4), and multiple ultraviolet lamps (5) are installed between the two support plates (4). The multiple ultraviolet lamps (5) are interspersed inside the airflow dispersion plate (10).

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