Clean door with aluminium profile frame

By using aluminum profile frames and a double sealing structure in the cleanroom door, combined with a hydraulic cylinder drive system, the problem of unsatisfactory sealing effect of the cleanroom door is solved, achieving a highly efficient sealing effect and a convenient maintenance process.

CN224679391UActive Publication Date: 2026-08-25GUANGDONG YIZHONG CLEAN TECH CO LTD
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Patent Information

Application Number
CN202522101357.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-29
Publication Date
2026-08-25
Estimated Expiration
2035-09-29

AI Technical Summary

Technical Problem

Existing cleanroom doors have inadequate sealing performance and lack multiple sealing mechanisms, increasing the risk of dust entering the room.

Method used

The cleanroom door design, featuring an aluminum profile frame, utilizes a double-sealing structure formed by recessed sealing rings and auxiliary sealing rings. Combined with a hydraulic cylinder drive system, this achieves a tight closure between the door and the frame. The cooperation between the convex frame and the recessed sealing rings enhances the sealing effect and facilitates the maintenance and replacement of sealing components.

Benefits of technology

It significantly improves the sealing performance between the door and the frame, ensuring a highly efficient sealing effect. Furthermore, the sealing mechanism is easy to disassemble and maintain, extending its service life.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224679391U_ABST
    Figure CN224679391U_ABST
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Abstract

The utility model discloses a clean door with aluminium alloy frame, including frame body, and the door body of through hinged installation on frame body, one side of door body is fixedly connected with the convex frame, and the inside of frame body is provided with moving plate, the utility model discloses through the mutual cooperation of frame body, door body, convex frame, moving plate, auxiliary sealing ring, recessed sealing ring, cover set groove, cooperation groove, hydraulic cylinder, drive block, connecting block, plug rod, telescopic link, stabilizing plate, spring, controller and operating button, in the process of using, discard the setting of the bottom of conventional clean door without frame, utilize a complete frame shape frame body cooperation door body use, then utilize recessed sealing ring and cover in convex frame surface, form sealed mechanism, and the recessed sealing ring of convex frame outside and inside will extrude closely on door body, again, utilize auxiliary sealing ring and frame inner wall extrusion closely, formed again sealed mechanism, like this, the sealing property between frame body and door body has been improved greatly.
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Description

Technical Field

[0001] This utility model relates to the field of cleanroom door technology, specifically a cleanroom door with an aluminum profile frame. Background Technology

[0002] Cleanroom doors are a special type of door improved from ordinary doors. They are generally installed inside cleanrooms, hospitals, and pharmaceutical factories. Cleanroom doors can reduce the entry of external dust into the room and improve the cleanliness of the room. Currently, existing cleanroom doors generally only use basic sealing mechanisms and broom strips for sealing, and do not have multiple sealing mechanisms, so they cannot achieve a very high sealing effect and the sealing effect is not ideal.

[0003] A search revealed a cleanroom door with publication number CN205314844U. The cleanroom door includes a door frame and a door panel. One side of the door panel is fixedly connected to the door frame via a hinge and can rotate around the door frame. A sweeping strip is provided below the door panel. The sweeping strip includes a base and two movable blocks. The movable blocks are connected to the base via elastic elements and are located on both sides of the base. The base is fixedly connected to the door frame. Both sides of the movable blocks in the width direction are inclined. This technical solution also has the aforementioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a cleanroom door with an aluminum profile frame to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cleanroom door with an aluminum profile frame, comprising a frame and a door body mounted on the frame via hinges. A protruding frame is fixedly connected to one side of the door body. A movable plate is provided inside the frame. A recessed sealing ring is fixedly connected to one side of the movable plate corresponding to the protruding frame. An auxiliary sealing ring is provided on the outer side of the movable plate. The movable plate is used to drive the recessed sealing ring and the auxiliary sealing ring to move. The recessed sealing ring and the auxiliary sealing ring cooperate to form a double sealing structure to seal the gap between the door body and the frame.

[0006] Optionally, the surface of the movable plate is provided with a sleeve groove, and the auxiliary sealing ring is movably sleeved in the sleeve groove.

[0007] Optionally, the outer side of the recessed sealing ring is in close contact with the inner wall of the frame, and a mating groove is provided on the right side of the recessed sealing ring. The mating groove is used in conjunction with the convex frame, and the outer side of the mating groove is rounded.

[0008] Optionally, a hydraulic cylinder is installed on the frame, a drive block is fixedly connected to the output shaft of the hydraulic cylinder, a connecting block is fixedly connected to the side of the movable plate, and a plug rod is provided on the side of the connecting block, the plug rod being movably inserted into the connecting block.

[0009] Optionally, a stabilizing plate is connected to the side of the connecting block via a telescopic rod, and the insert rod is fixedly connected to the side of the stabilizing plate.

[0010] Optionally, a spring is fitted onto the surface of the telescopic rod.

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

[0012] This utility model utilizes the interplay of a frame, door, convex frame, movable plate, auxiliary sealing ring, recessed sealing ring, fitting groove, mating groove, hydraulic cylinder, drive block, connecting block, insert rod, telescopic rod, stabilizing plate, spring, controller, and operating buttons. In use, it eliminates the conventional cleanroom door design that lacks a frame at the bottom. Instead, it employs a complete frame to work with the door. A recessed sealing ring covers the surface of the convex frame, forming a sealing mechanism. The recessed sealing rings on both the outer and inner sides of the convex frame are tightly pressed against the door. Furthermore, an auxiliary sealing ring is tightly pressed against the inner wall of the frame, forming a secondary sealing mechanism. This significantly improves the sealing performance between the frame and the door, resulting in a superior sealing effect. The sealing mechanism is also easily detachable from the frame for maintenance, repair, or replacement. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the front view of this utility model;

[0014] Figure 2 This is a first-view perspective sectional view of the present invention;

[0015] Figure 3 This is a two-dimensional cross-sectional view of the present invention from a second perspective;

[0016] Figure 4 This utility model Figure 4 A magnified view of part A in the image;

[0017] Figure 5 This is a three-dimensional structural diagram of the hydraulic cylinder, drive block, and connecting block of this utility model.

[0018] Figure 6 This is a three-dimensional structural diagram of the door body and the convex frame of this utility model;

[0019] Figure 7 This is a schematic diagram showing the separation of the movable plate and the auxiliary sealing ring of this utility model.

[0020] In the diagram: 1. Frame, 2. Door, 3. Protruding frame, 4. Moving plate, 5. Recessed sealing ring, 6. Auxiliary sealing ring, 7. Slot, 8. Mating slot, 9. Hydraulic cylinder, 10. Drive block, 11. Connecting block, 12. Insert rod, 13. Telescopic rod, 14. Stabilizing plate, 15. Spring, 16. Controller, 17. Operation button, 18. Assembly slot. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-7 A cleanroom door with an aluminum profile frame includes a frame 1 made of aluminum profile. A door 2, also made of aluminum profile, is hinged to the side of the frame 1. The door 2 works in conjunction with the frame 1 and has an observation window and a lock that works in conjunction with the frame 1. This is existing technology. The frame 1 is a complete frame, and the door 2 is directly built into the inside of the frame 1, abandoning the conventional inverted U-shaped door frame. The side of the door 2 facing the inside of the frame 1 has an integrally formed protruding frame 3, which is a rectangular frame structure. In actual sealing, only the larger gap between the outer side of the protruding frame 3 and the frame 1 needs to be sealed to achieve a sealing effect. The distance between the outer side of the protruding frame 3 and the outer side of the frame 1 is relatively large in this technical solution, which facilitates the setting of the sealing structure in practical applications.

[0023] Inside the frame 1, there is a frame-shaped movable plate 4. A recessed sealing ring 5 is fixedly bonded to the side of the movable plate 4. A mating groove 8 is formed on the side of the recessed sealing ring 5 facing the convex frame 3. The outermost edge of the recessed sealing ring 5 is slightly larger than the inner edge of the frame 1, ensuring close contact between the outer side of the recessed sealing ring 5 and the inner wall of the frame 1. The outer side of the recessed sealing ring 5 is in a compressed state. This compression first seals the outer side of the recessed sealing ring 5 against the frame 1. The mating groove 8 is slightly smaller than the convex frame 3, and its outer edge is rounded. When the recessed sealing ring 5 moves towards the door 2, the rounded edge facilitates the recessed sealing ring 5 covering the surface of the convex frame 3. Furthermore, the slightly smaller mating groove 8 ensures that the convex frame 3 compresses the recessed sealing ring 5. This provides a good sealing effect. After the convex frame 3 is inserted into the mating groove 8, the side of the recessed sealing ring 5 is also tightly fitted to the side of the door body 2. A fitting groove 7 is also provided on the side of the movable plate 4, and an auxiliary sealing ring 6 is movably fitted in the fitting groove 7. The rectangular area of ​​the inner side of the auxiliary sealing ring 6 is smaller than the rectangular area of ​​the outer edge of the fitting groove 7. The purpose of this setting is to ensure that when the auxiliary sealing ring 6 is fitted into the fitting groove 7 on the surface of the movable plate 4, the inner side of the auxiliary sealing ring 6 is in a compressed state, and the outer rectangle of the auxiliary sealing ring 6 is slightly larger than the inner rectangle of the frame 1. The purpose of this setting is to ensure that the outer side of the auxiliary sealing ring 6 is also in a compressed state. Only by compressing the sealing components can a good sealing effect be achieved. Both the recessed sealing ring 5 and the auxiliary sealing ring 6 are made of thermoplastic elastomer and have a long service life.

[0024] Any sealing structure may leak after long-term use. Therefore, it is necessary to remove the movable plate 4 from the frame 1 to maintain the sealing components. Two mounting slots 18 are provided inside the frame 1, and a hydraulic cylinder 9 for providing linear driving force is fixedly installed in each mounting slot 18. A drive block 10 is fixedly connected to the output shaft of the hydraulic cylinder 9, and the drive block 10 is also located within the mounting slot 18. The extension length of the output shaft of the hydraulic cylinder 9 also includes the range for driving the drive block 10 to move closer to the hydraulic cylinder 9. Two connecting blocks 11 are fixedly connected to the side of the movable plate 4. Two telescopic rods 13 are fixedly welded to the side of each connecting block 11, and the ends of the two telescopic rods 13 away from the connecting block 11 are fixedly connected to a stabilizing plate 14. A plug rod 12 is fixedly connected to the side of the stabilizing plate 14 away from the connecting block 11. One end of the fixed plate 14 is movably inserted into the drive block 10. To ensure the stability of the insertion of the rod 12, a spring 15 is fitted on the surface of each telescopic rod 13. One end of the spring 15 is fixedly welded to the connecting block 11, and the other end is fixedly welded to the stabilizing plate 14. When the spring 15 is in the state shown in the figure, it is in a compressed state. Thus, the spring 15 has a tendency to drive the stabilizing plate 14 away from the connecting block 11. This means that when the stabilizing plate 14 is not manually moved, it will not move towards the connecting block 11, and the rod 12 will not disengage from the drive block 10. This ensures that when the hydraulic cylinder 9 drives the drive block 10 to move, the force will be transmitted to the connecting block 11 in sequence through the rod 12, the stabilizing plate 14, and the telescopic rod 13. In this way, the connecting block 11 will drive the moving plate 4 to move on the inner wall of the frame 1.

[0025] Finally, to facilitate user operation and synchronize the operation of the two hydraulic cylinders 9, this technical solution installs a controller 16 in one of the two assembly slots 18. The controller 16 is electrically connected to the hydraulic cylinder 9 and controls the operation and stop of the hydraulic cylinder 9. To facilitate the user in providing work commands to the hydraulic cylinder 9, operation buttons 17, electrically connected to the controller 16, are installed on both the inside and outside of the frame 1. According to the prior art, the operation between the operation button 17 and the controller 16 is set. Clicking the operation button 17 once controls the controller 16 to operate the hydraulic cylinder 9, and the moving plate 4 moves closer to... The door 2 moves in a certain direction. Pressing the operation button 17 twice will cause the controller 16 to control the hydraulic cylinder 9 to work, while the moving plate 4 moves away from the door 2. The settings for the operation button 17 and the controller 16 are known in the prior art. Only two different operations are needed to make the controller 16 control the hydraulic cylinder 9 to perform different operations. In addition, in this technical solution, after the door 2 is closed, it is still in the state before the user operated the operation button 17. In this technical solution, the controller 16 can be a Siemens PLC controller, model S7-1200.

[0026] In use, the door 2 is closed or opened, and then the user clicks the operation button 17. The controller 16 controls the hydraulic cylinder 9 to work, and the hydraulic cylinder 9 drives the drive block 10 to move. The drive block 10 drives the connecting block 11 to move through the insert rod 12, the stabilizing plate 14 and the telescopic rod 13. The connecting block 11 drives the moving plate 4 to move on the inner wall of the frame 1. Here, the moving plate 4 is inside the frame 1. Whether it moves towards the door 2 or away from the door 2 depends on the need to open and close the door. In the sealing state, the recessed sealing ring 6 tightly covers the surface of the convex frame 3. When it is necessary to disassemble the moving plate 4 and the structure connected to it for maintenance, the stabilizing plate 14 is pushed towards the connecting block 11. The spring 15 will be compressed, and the stabilizing plate 14 will drive the insert rod 12 to disengage from the drive block 10. Then, the moving plate 4 and the structure connected to it can be directly pulled out from the frame 1.

[0027] 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 cleanroom door with an aluminum profile frame, comprising a frame (1) and a door body (2) hinged to the frame (1), characterized in that: A protruding frame (3) is fixedly connected to one side of the door body (2). A movable plate (4) is provided inside the frame body (1). A recessed sealing ring (5) is fixedly connected to one side of the movable plate (4) corresponding to the protruding frame (3). An auxiliary sealing ring (6) is provided on the outside of the movable plate (4). The movable plate (4) is used to drive the recessed sealing ring (5) and the auxiliary sealing ring (6) to move. The recessed sealing ring (5) and the auxiliary sealing ring (6) cooperate to form a double sealing structure to seal the gap between the door body (2) and the frame body (1).

2. The cleanroom door with an aluminum profile frame according to claim 1, characterized in that: The surface of the movable plate (4) is provided with a sleeve groove (7), and the auxiliary sealing ring (6) is movably sleeved in the sleeve groove (7).

3. The cleanroom door with an aluminum profile frame according to claim 2, characterized in that: The outer side of the recessed sealing ring (5) is in close contact with the inner wall of the frame (1). A mating groove (8) is provided on the right side of the recessed sealing ring (5). The mating groove (8) is used in conjunction with the convex frame (3). The outer side of the mating groove (8) is rounded.

4. The cleanroom door with an aluminum profile frame according to claim 3, characterized in that: A hydraulic cylinder (9) is installed on the frame (1). A drive block (10) is fixedly connected to the output shaft of the hydraulic cylinder (9). A connecting block (11) is fixedly connected to the side of the moving plate (4). A plug rod (12) is provided on the side of the connecting block (11). The plug rod (12) is movably inserted into the connecting block (11).

5. The cleanroom door with an aluminum profile frame according to claim 4, characterized in that: The side of the connecting block (11) is connected to a stabilizing plate (14) via a telescopic rod (13), and the insert rod (12) is fixedly connected to the side of the stabilizing plate (14).

6. The cleanroom door with an aluminum profile frame according to claim 5, characterized in that: A spring (15) is fitted onto the surface of the telescopic rod (13).

Citation Information

Patent Citations

  • Toilet uses cleaning door

    CN205314844U