A high-efficiency filtering air cleaner pre-filter device for clean room air

By using a motor-driven rotating plate and rotating arm linkage system, and utilizing the sliding connection between the card block and the card slot, the problem of complex replacement of the air intake pre-filter of the cleanroom air purifier is solved. This enables rapid replacement of the filter and maintains its sealing performance, ensuring the high-efficiency filtration effect of the air purifier.

CN224551704UActive Publication Date: 2026-07-24JIANGMEN HUAYI PURIFYING AIR CONDITIONING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGMEN HUAYI PURIFYING AIR CONDITIONING CO LTD
Filing Date
2025-07-01
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The replacement process for the pre-filter of the air intake of existing cleanroom air purifiers is complicated and prone to damage to the seal due to human error, which affects the cleanliness of the air.

Method used

The system employs a motor-driven rotating plate and rotating arm linkage system, which enables quick replacement of the filter screen through the sliding connection between the card block and the card slot, simplifying the replacement process and maintaining a tight seal.

Benefits of technology

It enables quick filter replacement, ensuring continuous and efficient filtration of the air purifier and avoiding sealing problems caused by human operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of air intake prefiltering, and discloses a dust-free workshop air purifier air intake prefiltering device capable of efficiently filtering, which comprises a purification device, a working block fixedly connected to the outside of the purification device, a motor fixedly connected to the inside of the working block, a rotating plate fixedly connected to the driving end of the motor, a plurality of rotating arms rotatably connected to the outside of the rotating plate, a clamping block rotatably connected to one end of the rotating arm, a plurality of sliding grooves formed in the inside of the working block, a filter screen slidably connected to the outside of the purification device, a plurality of clamping grooves formed in the inside of the filter screen, and the inside of the working block rotatably connected to the outside of the rotating plate. In the utility model, when the filter screen is replaced, the motor is started to drive the rotating plate and the rotating arm to move, the clamping block is withdrawn from the clamping groove along the sliding groove, and the old filter screen is removed. After the new filter screen is installed, the motor is reversed, the clamping block is slid into the new clamping groove to be clamped, and the quick replacement is completed.
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Description

Technical Field

[0001] This utility model relates to the field of air inlet pre-filtration technology, and in particular to an air inlet pre-filtration device for a cleanroom air purifier that can filter air efficiently. Background Technology

[0002] In cleanroom environments, air purifiers are key equipment for maintaining air cleanliness, and the performance of their air intake pre-filters directly affects the purification effect and operating efficiency.

[0003] However, while existing pre-filters for cleanroom air purifiers can achieve basic filtration, the filter replacement process has significant drawbacks. Traditional structures often rely on complex bolt, clip, or manual insertion / removal designs, requiring specialized tools and considerable time for replacement. Furthermore, human error during operation can easily damage the airtightness of the purification device, affecting the air cleanliness of the cleanroom. Therefore, this paper proposes a highly efficient pre-filter for cleanroom air purifiers to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an air intake pre-filter device for a cleanroom air purifier that can filter air efficiently, aiming to improve the problem of inconvenient replacement in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A pre-filtering device for the air intake of a cleanroom air purifier with high efficiency filtration includes a purification device. A working block is fixedly connected to the outside of the purification device. A motor is fixedly connected to the inside of the working block. A rotating plate is fixedly connected to the drive end of the motor. Multiple rotating arms are rotatably connected to the outside of the rotating plate. A locking block is rotatably connected to one end of each rotating arm. As a further description of the above technical solution: The working block has multiple sliding grooves inside, and the purification device is slidably connected to a filter screen outside, with multiple slots inside the filter screen. As a further description of the above technical solution: The rotating plate is externally rotatably connected to the interior of the working block; As a further description of the above technical solution: The card block is externally slidably connected to the outside of the working block; As a further description of the above technical solution: The card block is externally slidably connected to the inside of the groove; As a further description of the above technical solution: The function of the locking block is to engage and fix subsequent components; As a further description of the above technical solution: The external engagement of multiple of the card blocks is connected to the interior of the filter screen; As a further description of the above technical solution: The external engagement of the card block is connected to the inside of the card slot.

[0006] This utility model has the following beneficial effects: 1. In this utility model, when replacing the old net, the motor starts to make the rotating plate and rotating arm work together, and the locking block exits the slot along the slide groove to remove the old net; after the new net is installed, the motor reverses and the locking block slides into the new slot to engage, thus completing the quick replacement. Attached Figure Description

[0007] Figure 1 This is a three-dimensional schematic diagram of an air inlet pre-filtration device for a cleanroom air purifier that can filter air efficiently, as proposed in this utility model. Figure 2 This is a schematic diagram of the working block of the air inlet pre-filter device for a cleanroom air purifier that can filter efficiently, as proposed in this utility model. Figure 3 This is a schematic diagram of the structure of the filter screen of the air inlet pre-filter device for a cleanroom air purifier that can filter efficiently, as proposed in this utility model. Figure 4 This is a schematic diagram of the rotating plate of the air inlet pre-filter device for a cleanroom air purifier that can filter air efficiently, as proposed in this utility model.

[0008] Legend: 1. Purification device; 2. Working block; 3. Motor; 4. Rotating plate; 5. Rotating arm; 6. Locking block; 7. Slide groove; 8. Filter screen; 9. Slot. Detailed Implementation

[0009] 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.

[0010] Reference Figures 1 to 4This utility model provides an embodiment of an air pre-filtration device for a cleanroom air purifier that can filter air efficiently. The device includes a purification unit 1, which serves as the basic supporting structure for the pre-filtration device. A working block 2 is fixedly connected to the outside of the purification unit 1, serving as a connecting hub for the coordinated operation of various components. A motor 3 is fixedly connected inside the working block 2, acting as a power drive source. A rotating plate 4 is fixedly connected to the drive end of the motor 3, serving as a driving force. Multiple rotating arms 5 are rotatably connected to the outside of the rotating plate 4, transmitting and pushing power.

[0011] One end of the rotating arm 5 is rotatably connected to a locking block 6. The locking block 6 is designed as a direct component for quick replacement. The function of the locking block 6 is to lock and fix subsequent components. The outer side of the locking block 6 is slidably connected to the outer side of the working block 2. The working block 2 has multiple sliding grooves 7 inside. The sliding grooves 7 are designed to limit the sliding trajectory of the locking block 6. The outer side of the locking block 6 is slidably connected to the inner side of the sliding grooves 7. The outer side of the purification device 1 is slidably connected to a filter screen 8. The filter screen 8 is designed to pre-filter the air entering the air purifier. The outer side of the multiple locking blocks 6 is locked and connected to the inner side of the filter screen 8. The inner side of the filter screen 8 has multiple locking slots 9. The locking slots 9 are designed to install, fix, remove, and replace the filter screen 8.

[0012] Working Principle: The quick-replacement working principle of the filter 8 in this high-efficiency cleanroom air purifier's inlet pre-filtration device is as follows: In the initial state, the filter 8 is stably installed outside the purification device 1 through the engagement of the locking block 6 and the locking groove 9. The motor 3 and other components inside the working block 2 are in standby mode, providing fixed support for the filter 8. When the filter 8 needs to be replaced, the motor 3 starts, and its drive end drives the rotating plate 4 to rotate. During the rotation of the rotating plate 4, multiple rotating arms 5 are linked, and the rotating arms 5 pull the locking block 6 to slide along the sliding groove 7 inside the working block 2, causing the locking block 6 to disengage from the locking groove 9 of the filter 8, releasing the fixed constraint on the filter 8. At this time, the operator can easily remove the old filter 8 from outside the purification device 1. Next, align the new filter 8 with the installation position of the purification device 1, the motor 3 rotates in the opposite direction, the rotating plate 4 and the rotating arm 5 move together again, causing the locking block 6 to slide into the corresponding slot 9 of the new filter 8, and re-lock and fix it, quickly completing the filter 8 replacement process, ensuring that the air purifier can continuously and efficiently pre-filter the air entering the cleanroom.

[0013] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-filtering device for the air intake of a cleanroom air purifier capable of high-efficiency filtration, comprising a purification device (1), characterized in that: The purification device (1) is fixedly connected to a working block (2) on the outside, and a motor (3) is fixedly connected inside the working block (2). A rotating plate (4) is fixedly connected to the drive end of the motor (3). Multiple rotating arms (5) are rotatably connected to the outside of the rotating plate (4). A locking block (6) is rotatably connected to one end of the rotating arm (5). The working block (2) has multiple sliding grooves (7) inside, and the purification device (1) is slidably connected to a filter screen (8) outside, and the filter screen (8) has multiple slots (9) inside. The external engagement of the plurality of said card blocks (6) is connected to the interior of the filter screen (8); The external engagement of the card block (6) is connected to the inside of the card slot (9).

2. The pre-filtering device for the air inlet of a cleanroom air purifier with high-efficiency filtration as described in claim 1, characterized in that: The external rotating plate (4) is rotatably connected to the internal working block (2).

3. The pre-filtering device for the air inlet of a cleanroom air purifier with high-efficiency filtration as described in claim 1, characterized in that: The card block (6) is externally slidably connected to the outside of the working block (2).

4. The pre-filtering device for the air inlet of a cleanroom air purifier with high-efficiency filtration as described in claim 1, characterized in that: The outer side of the card block (6) is slidably connected to the inside of the groove (7).

5. The pre-filtering device for the air inlet of a cleanroom air purifier with high-efficiency filtration as described in claim 1, characterized in that: The function of the locking block (6) is to engage and fix subsequent components.