Air purification device for dust-free laboratory

Abstract

The utility model provides an air purification device for a dust-free laboratory, and relates to the technical field of air purification of the dust-free laboratory, the air purification device comprises a filter box and a known fan arranged at an air outlet of the filter box, the inner wall of the filter box is provided with a plurality of notches along the air flowing direction, the notches are arranged in an arc shape, and the circle centers of the notches are positioned outside the filter box; a plurality of notches are formed in the filter box, a rotating shaft passing through the circle centers of the notches is rotationally connected to the outside of the filter box, the rotating shaft is arranged, a rotating plate is mounted on the rotating shaft, and two filter pieces are mounted on the rotating plate, so that air treatment can be realized only by transferring one filter piece on the rotating plate into the filter box in actual use; and when the filter part in the filter box needs to be cleaned, the other filter part enters the filter box through rotation of the rotating plate to continuously purify the air, and the filter part which is used for a period of time before is transferred out of the filter box, so that personnel can conveniently carry out cleaning, replacement and other operations.

Description

Technical Field

[0001] This utility model relates to the field of cleanroom laboratory air purification technology, and in particular to an air purification device for cleanroom laboratories. Background Technology

[0002] A cleanroom is a specially designed and constructed clean room that eliminates airborne contaminants such as microparticles and bacteria within a certain space and controls indoor temperature, cleanliness, indoor pressure, airflow speed and distribution, noise and vibration, lighting, and static electricity within a certain required range.

[0003] Therefore, an air circulation device for a cleanroom laboratory, with publication number CN218636859U, involves applying force to the handle to compress the positioning block and pull the spring out of the positioning groove. At this time, the door is opened to facilitate the replacement of the filter box and the cleaning of the filter element inside the filter box. The fan is started to draw air into the filter box through the inlet, where large dust particles are filtered through the filter plate. The rotating motor drives the threaded rod to rotate, which in turn drives the threaded inner sleeve to move up and down. This causes the threaded inner sleeve to drive the cleaning brush to clean the filter screen on the filter plate. The cleaned dust falls into the collection chamber. The activated carbon filter plate purifies the air of odors, the plasma generator eliminates bacteria in the air, and the HEAP filter screen filters fine dust to increase the purity of the air. The filtered air is discharged through the nozzle at the bottom of the guide pipe.

[0004] However, while existing technologies can effectively clean the filter plates, they still require the entire filter box to be removed for cleaning or replacement after prolonged use when installing the HEAP filter. This cleaning process can cause the device to malfunction. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing an air purification device for a cleanroom laboratory.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an air purification device for a cleanroom laboratory, comprising a filter box and a fan installed at the air outlet of the filter box. The inner wall of the filter box has several notches along the airflow direction. The notches are arc-shaped and their centers are located outside the filter box. A rotating shaft passing through the centers of the notches is rotatably connected to the outside of the filter box. A rotating plate is rotatably connected to the surface of the rotating shaft at any notch, and is press-fitted with the inner wall of the notch by a sealing gasket. Several filter elements are embedded in the surface of the rotating plate and arranged in a circular array around the center line of the rotating shaft. An arc-shaped block is fixedly connected inside the filter box and slidably connected to the side of the rotating plate. The surface of the arc-shaped block is press-fitted with the side of the rotating plate by a sealing gasket. The filter elements are used to filter dust, fine dust particles, and bacteria in the air.

[0007] Preferably, a motor for driving the rotating shaft is installed outside the filter box.

[0008] Preferably, a brush plate is fitted on the rotating shaft at any position of the filter surface of the filter element, and a toothed ring fitted on the rotating shaft is fixedly connected to the brush handle of the brush plate, and a toothed rack that meshes with the toothed ring is inserted into the outer wall of the filter box.

[0009] Preferably, the back of the rack extends outward and engages with the outer wall of the filter box, and an electric telescopic rod is connected between the rack and the outer wall of the filter box.

[0010] Preferably, the outer wall of the filter box is fixedly connected to end plates sleeved on the rotating shaft at both sides of the rotating plates, and the two end plates are equipped with movable covers that are slidably connected to the outer wall of the filter box and are used to close the rotating plates.

[0011] Preferably, the inner wall of the movable cover is rotatably connected to the side of the rotating plate, and one end plate is fixedly connected to two ends of a screw that passes through the movable cover.

[0012] Preferably, the screw surface is threaded with two nuts located on both sides of the movable cover.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting a rotating shaft, installing a rotating plate on the rotating shaft, and installing two filter elements on the rotating plate, air treatment can be achieved by simply transferring one of the filter elements on the rotating plate into the filter box during actual use. When it is necessary to clean the filter elements in the filter box, the other filter element is moved into the filter box by rotating the rotating plate to continue purifying the air continuously. The filter element that has been used for a period of time is transferred out of the filter box for easy cleaning, replacement and other operations.

[0015] 2. In this utility model, the reciprocating movement of the rack is achieved by extending and retracting the electric telescopic rod, which in turn enables the meshing and connecting toothed ring to drive the brush plate to swing back and forth in contact with the filter surface of the filter element, thereby cleaning the filter surface of the filter element, ensuring that the dust on the filter surface falls off, and achieving automatic cleaning. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an air purification device for a cleanroom laboratory;

[0017] Figure 2 This invention proposes an air purification device for a cleanroom laboratory. Figure 1 A schematic diagram of the structure viewed from below;

[0018] Figure 3 This utility model provides a schematic diagram of the internal structure of the movable cover of an air purification device for a cleanroom laboratory;

[0019] Figure 4 This invention proposes an air purification device for a cleanroom laboratory. Figure 3 A cross-sectional structural diagram.

[0020] Legend: 1. Filter box; 2. Fan; 3. Movable cover; 4. End plate; 5. Shaft; 6. Screw; 7. Rotating plate; 8. Brush plate; 9. Motor; 10. Rack; 11. Electric telescopic rod; 12. Gear ring; 13. Arc block; 14. Filter element; 15. Nut; 16. Notch. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figure 1-4As shown, an air purification device for a cleanroom laboratory includes a filter box 1 and a fan 2 installed at the outlet of the filter box 1. The fan 2 draws in outside air through the inlet of the filter box 1, and after filtration and purification by the filter box 1, the air is drawn out by the fan 2 at the outlet of the filter box 1 and re-enters the outside air. The inner wall of the filter box 1 has several notches 16 along the airflow direction. The notches 16 are arc-shaped, with their centers located outside the filter box 1. A rotating shaft 5, passing through the centers of the notches 16, is rotatably connected to the outside of the filter box 1. A motor 9 is installed outside the filter box 1 to drive the rotating shaft 5. The rotating shaft 5 is rotated by the motor 9. A rotating plate 7, which is interference-fitted with the inner wall of the notch 16, is rotatably connected to the surface of the rotating shaft 5 at any notch 16. By installing a sealing gasket on the inner wall of the notch 16, air leakage is prevented at the joint when the rotating plate 7 is inside the notch 16. Furthermore, the rotating plate 7, through the rotation of the rotating shaft 5, sequentially enters and exits the notch 16 from both sides. 6. Several filter elements 14 are embedded in the surface of the rotating plate 7, arranged in a ring array around the center line of the rotating shaft 5. By rotating the rotating plate 7, the two filter elements 14 installed on the rotating plate 7 alternately enter the filter box 1. Therefore, in actual use, by using the two filter elements 14 alternately, the air can be treated by using the other filter element 14 while cleaning one filter element 14. An arc-shaped block 13 is fixedly connected to the side of the rotating plate 7. The surface of the arc-shaped block 13 is press-fitted with the side of the rotating plate 7 through a sealing gasket. The arc-shaped block 13 ensures that when the rotating plate 7 is in the filter box 1, it prevents air leakage, that is, it ensures that the air in the filter box 1 completely passes through the filter elements 14. The filter elements 14 are used to filter dust, fine dust and bacteria in the air. According to the air flow direction, the filter elements 14 are known filter plates, activated carbon filter plates and plasma generators. A HEAP filter screen is installed on the windward side of the activated carbon filter plate to filter fine dust.

[0024] Furthermore, a brush plate 8 is fitted on each filter element 14 at any position on the rotating shaft 5. A toothed ring 12 fitted on the rotating shaft 5 is fixedly connected to the brush handle of the brush plate 8. A rack 10 that meshes with the toothed ring 12 is inserted into the outer wall of the filter box 1. The back of the teeth of the rack 10 extends outward and engages with the outer wall of the filter box 1. An electric telescopic rod 11 is connected between the rack 10 and the outer wall of the filter box 1. In actual use, the rack 10 is moved back and forth by extending and retracting the electric telescopic rod 11. This causes the meshing toothed ring 12 to drive the brush plate 8 to swing back and forth to contact the filter element 14, thereby cleaning the filter element 14 and ensuring that the dust on the filter surface falls off, thus achieving automatic cleaning.

[0025] Furthermore: on both sides of the outer wall of the filter box 1, end plates 4 are fixedly connected to the rotating shaft 5. The two end plates 4 are equipped with movable covers 3 that are slidably connected to the outer wall of the filter box 1 and are used to close the rotating plates 7. The inner wall of the movable cover 3 is rotatably connected to the side of the rotating plate 7. One of the end plates 4 is fixedly connected to the two ends of the movable cover 3 with screws 6 that pass through the movable cover 3. The surface of the screws 6 is threaded with two nuts 15 located on both sides of the movable cover 3. The movable cover 3 is installed by passing through the screws 6 and clamping the movable cover 3 by installing the two nuts 15. Thus, the movable cover 3 and the two end plates 4 are used to protect the rotating plates 7 exposed outside the filter box 1, preventing external dust, water vapor or other impurities from covering the surface of the filter element 14.

[0026] Working principle: The fan 2 draws in outside air, which enters the filter box 1. Under the action of several filter elements 14 inside the filter box 1, large dust particles, fine dust, odors, and bacteria in the air are removed in sequence. After a period of use, the motor 9 drives the rotating shaft 5 to rotate, which in turn rotates several rotating plates 7. This causes the filter elements 14 located outside the filter box 1 to be moved into the filter box 1. The filter elements 14 that have been used in the filter box 1 for a period of time are transferred to the outside of the filter box 1. They can be replaced by removing the movable cover 3 or by using the electric telescopic rod 11 to extend and retract, which causes the rack 10 to move back and forth. This causes the meshing gear ring 12 to drive the brush plate 8 to swing back and forth, contacting the filter surface of the filter element 14, thus cleaning the filter surface of the filter element 14 and ensuring that the dust on the filter surface falls off, achieving automatic cleaning.

[0027] The wiring diagrams of the fan 2, electric telescopic rod 11, and motor 9 in this utility model are common knowledge in the field. Their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the fan 2, electric telescopic rod 11, and motor 9 will not be explained in detail.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An air purification device for a cleanroom laboratory, comprising a filter box (1) and a fan (2) known to be installed at the air outlet of the filter box (1), characterized in that: The filter box (1) has several notches (16) on its inner wall along the airflow direction. The notches (16) are arc-shaped and their centers are located outside the filter box (1). The filter box (1) is rotatably connected to a rotating shaft (5) that passes through the centers of the notches (16). The rotating shaft (5) is rotatably connected to a rotating plate (7) at any notch (16) by an interference fit with the inner wall of the notch (16) through a sealing gasket. The rotating plate (7) is embedded with several filter elements (14) arranged in a ring array around the center line of the rotating shaft (5). The filter box (1) is fixedly connected to an arc-shaped block (13) that slides on the side of the rotating plate (7). The surface of the arc-shaped block (13) is interference fit with the side of the rotating plate (7) through a sealing gasket. The filter elements (14) are used to filter dust, fine dust and bacteria in the air.

2. The air purification device for a cleanroom laboratory according to claim 1, characterized in that: The filter box (1) is equipped with a motor (9) for driving the rotating shaft (5) to rotate.

3. The air purification device for a cleanroom laboratory according to claim 1, characterized in that: A brush plate (8) is fitted on the rotating shaft (5) at any filter surface position of the filter element (14). A toothed ring (12) fitted on the rotating shaft (5) is fixedly connected to the brush handle of the brush plate (8). A toothed rack (10) that meshes with the toothed ring (12) is inserted into the outer wall of the filter box (1).

4. The air purification device for a cleanroom laboratory according to claim 3, characterized in that: The back of the toothed rack (10) extends outward and engages with the outer wall of the filter box (1), and an electric telescopic rod (11) is connected between the rack (1) and the outer wall of the filter box (1).

5. The air purification device for a cleanroom laboratory according to claim 1, characterized in that: The outer wall of the filter box (1) is fixedly connected to end plates (4) sleeved on the rotating shaft (5) on both sides of the rotating plates (7). The two end plates (4) are equipped with movable covers (3) that are slidably connected to the outer wall of the filter box (1) and used to close the rotating plates (7).

6. The air purification device for a cleanroom laboratory according to claim 5, characterized in that: The inner wall of the movable cover (3) is rotatably connected to the side of the rotating plate (7), and one of the end plates (4) is fixedly connected to the two ends of the movable cover (3) with screws (6) that pass through the movable cover (3).

7. The air purification device for a cleanroom laboratory according to claim 6, characterized in that: The screw (6) has two nuts (15) threadedly connected to the surface of the movable cover (3) on both sides.

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