Control device of negative pressure clean pass-through window

Abstract

This application relates to the field of pass-through windows and discloses a control device for a negative pressure clean pass-through window, including a wall and two rotating frames. The pass-through window body is fixedly installed on the inner wall of the wall, and the dimensions of the pass-through window body are adapted to the dimensions of the inner wall. Two shielding doors are rotatably connected to the surface of the pass-through window body, and the dimensions of the shielding doors are adapted to the dimensions of the pass-through window body. A connecting block is rotatably installed at one end of each rotating frame, and an electric push rod is fixedly connected to one end of the connecting block. The two shielding doors are symmetrically distributed about the pass-through window body. The bottom end of the rotating frame is rotatably connected to the top of the shielding doors. This application installs the rotating frame on the top of the shielding doors, and an electric push rod is installed at one end of the rotating frame via the connecting block. This allows the rotating frame to be adjusted in length by the electric push rod to control its rotation, thereby controlling the shielding doors to close automatically after a certain period of time.

Description

Technical Field

[0001] This application relates to the field of pass-through windows, and more particularly to a control device for a negative pressure clean pass-through window. Background Technology

[0002] A negative pressure cleanroom pass-through window is a device specifically designed for the safe transfer of items in cleanrooms and controlled environments. Its core feature is ensuring that items are not contaminated by external factors during transfer, while preventing contaminants from escaping from the clean area. The negative pressure cleanroom pass-through window is equipped with a high-efficiency particulate air filter (HEPA or ULPA), capable of removing more than 99.97% of particles larger than 0.3 microns. A fan delivers the highly filtered clean air into the pass-through window, creating a positive pressure environment to prevent external contaminants from entering. Its double-door interlocking function ensures that only one door can be opened at any time, preventing airflow short-circuiting. During installation, the pass-through window body is mounted in the wall, with rotatable shielding doors at both ends. These doors shield the two ends of the pass-through window body, allowing items to be placed or retrieved inside by opening one of the shielding doors.

[0003] Regarding the aforementioned technologies, the inventors believe that conventional negative pressure cleanroom pass-through windows require users to close the shielding door promptly to prevent contamination of the cleanroom and the controlled environment. However, manual control of the shielding door's opening or closing can easily lead to situations where the shielding door is forgotten to be closed, causing the pass-through window to become a leak point in the controlled environment and affecting the isolation effect of the controlled environment.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the issue of the shielding door of a negative pressure cleanroom transfer window being forgotten to be closed after being opened, this application provides a control device for a negative pressure cleanroom transfer window.

[0006] The control device for a negative pressure clean transfer window provided in this application adopts the following technical solution:

[0007] A control device for a negative pressure cleanroom pass-through window includes a wall and two rotating frames. The pass-through window body is fixedly installed on the inner wall of the wall. The dimensions of the pass-through window body are adapted to the dimensions of the inner wall. Two shielding doors are rotatably connected to the surface of the pass-through window body. The dimensions of the shielding doors are adapted to the dimensions of the pass-through window body. A connecting block is rotatably installed at one end of each rotating frame. An electric push rod is fixedly connected to one end of the connecting block. The two shielding doors are symmetrically distributed about the pass-through window body. The bottom end of the rotating frame is rotatably connected to the top of the shielding doors. The bottom end of the electric push rod is rotatably installed to the top of the pass-through window body.

[0008] Preferably, the bottom end of the electric push rod is rotatably connected to a bearing, and the bottom end of the bearing is fixedly installed to the top of the transfer window body.

[0009] Preferably, one end of the rotating frame is rotatably connected to a mounting bracket, and a fixing bolt is engaged with the inner wall of the mounting bracket, the surface of which is threaded into the inside of the shielding door.

[0010] Preferably, the surface of the wall is fixedly connected to two slide rails, and the surface of the slide rails is slidably connected to a fixing frame. The two fixing frames are symmetrically distributed about the transfer window body, and one end of the fixing frame is movably installed on the surface of the transfer window body. The cross-section of the slide rail is T-shaped, and the size of the slide rail surface is compatible with the size of the inner wall of the fixing frame.

[0011] Preferably, a limiting frame is rotatably mounted on the surface of the fixed frame, and a spring is fixedly connected between the limiting frame and the fixed frame.

[0012] Preferably, the surface of the slide rail is provided with a plurality of limiting grooves, the plurality of limiting grooves are evenly distributed on the surface of the slide rail, and the inner wall of the limiting groove is engaged with one end of the limiting frame.

[0013] Preferably, an auxiliary plate is fixedly installed at one end of the fixing frame. The auxiliary plate is a rubber plate, and one end of the auxiliary plate is movably connected to the surface of the transfer window body. The dimensions of the auxiliary plate surface are compatible with the dimensions of the fixing frame surface.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. By installing a rotating frame on top of the barrier door, an electric push rod is mounted on one end of the rotating frame via a connecting block. This allows the rotating frame to be controlled by adjusting its length, thus controlling the barrier door to close automatically after a certain period. A bearing is rotatably connected to the bottom of the electric push rod, facilitating its rotation on top of the pass-through window. A mounting bracket is rotatably mounted on the bottom of the rotating frame, with fixing bolts snapped into its inner wall. This allows for easy separation of the mounting bracket from the barrier door after removing the bolts, facilitating the installation and disassembly of the device. Compared to existing technologies, this method effectively improves the protective effect of the pass-through window.

[0016] 2. A sliding rail can also be installed on the wall surface. A fixing bracket is slidably connected to the surface of the sliding rail, allowing for easy separation of the fixing bracket from the pass-through window body for convenient disassembly and subsequent inspection and maintenance. One end of the fixing bracket is rotatably connected to a limit bracket, with a spring installed between the limit bracket and the fixing bracket. This spring helps to push the limit bracket to connect with the sliding rail surface, restricting the position of the fixing bracket. Several limiting grooves are formed on the surface of the sliding rail to enhance the fixing effect between the limit bracket and the sliding rail. A rubber auxiliary plate is installed at one end of the fixing bracket to increase the friction between the fixing bracket and the pass-through window body, effectively improving the performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a control device for a negative pressure cleanroom transfer window according to an embodiment of the application;

[0018] Figure 2 This is a schematic diagram of the rotating frame structure according to an embodiment of the application;

[0019] Figure 3 This is a side view of the embodiment of the application.

[0020] Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.

[0021] Explanation of reference numerals in the attached drawings: 1. Wall; 2. Pass-through window body; 3. Cover door; 4. Rotating frame; 5. Connecting block; 6. Electric push rod; 7. Bearing; 8. Mounting frame; 9. Fixing bolt; 10. Fixing frame; 11. Limiting frame; 12. Spring; 13. Slide rail; 14. Limiting groove; 15. Auxiliary plate. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a control device for a negative pressure clean transfer window, referring to... Figure 1 - Figure 2The system includes a wall 1. During installation, the pass-through window body 2 is installed inside the wall 1. Both ends of the pass-through window body 2 are rotatably connected to shielding doors 3, which shield both ends of the pass-through window body 2. In use, opening one shielding door 3 allows for easy placement or retrieval of items inside the pass-through window body 2. A rotating frame 4 is installed on top of the shielding door 3. One end of the rotating frame 4 is rotatably connected to a connecting block 5, and one end of the connecting block 5 is equipped with an electric push rod 6. The bottom end of the electric push rod 6 is rotatably connected to the top of the pass-through window body 2. By adjusting its length, the electric push rod 6 controls the rotation of the rotating frame 4, thereby controlling the shielding door 3 to close automatically after a certain period of time. This effectively improves the protective effect of the pass-through window and avoids the problem of the controlled environment being connected to the outside world if the user fails to close the shielding door 3.

[0024] Reference Figure 2 The bottom end of the electric push rod 6 is rotatably connected to a bearing 7. The bottom end of the bearing 7 is rotatably installed on the top of the transfer window body 2. The bearing 7 facilitates the rotation of the electric push rod 6 on the top of the transfer window body 2. The bottom end of the rotating frame 4 is rotatably installed with a mounting frame 8. The inner wall of the mounting frame 8 is clamped with a fixing bolt 9. The surface of the fixing bolt 9 is threadedly connected to the inner wall of the shielding door 3. The fixing bolt 9 and the mounting frame 8 connect the rotating frame 4 to the surface of the shielding door 3. After the fixing bolt 9 is removed, the mounting frame 8 can be easily separated from the shielding door 3, which facilitates the installation and disassembly of the device.

[0025] Reference Figure 3 - Figure 4 A slide rail 13 is installed on the surface of wall 1. A fixing bracket 10 is slidably connected to the surface of the slide rail 13. One end of the fixing bracket 10 is connected to the surface of the pass-through window body 2. The fixing bracket 10 is moved by the slide rail 13 and comes into contact with the pass-through window body 2, thereby installing the pass-through window body 2 inside the wall 1. The fixing bracket 10 is separated from the pass-through window body 2 for easy disassembly of the pass-through window body 2, facilitating future inspection and maintenance of the pass-through window. One end of the fixing bracket 10 is rotatably connected to a limit bracket 11. A spring 12 is installed between the limit bracket 11 and the fixing bracket 10. The spring 12 pushes the limit bracket 11 to connect with the surface of the slide rail 13, thereby fixing the fixing bracket 10. The position is restricted to ensure the fixation effect of the transfer window body 2. Several limiting grooves 14 are opened on the surface of the slide rail 13. The inner wall of the limiting groove 14 is engaged with one end of the limiting frame 11. The limiting groove 14 improves the fixation effect between the limiting frame 11 and the slide rail 13, avoiding the problem of slippage between the limiting frame 11 and the slide rail 13, which would cause the fixing frame 10 to loosen. A rubber auxiliary plate 15 is installed at one end of the fixing frame 10. One end of the auxiliary plate 15 is connected to the surface of the transfer window body 2. The auxiliary plate 15 increases the friction between the fixing frame 10 and the transfer window body 2, thereby ensuring the fixation effect of the fixing frame 10 on the transfer window body 2.

[0026] The implementation principle of the control device for a negative pressure cleanroom transfer window in this application embodiment is as follows: A rotating frame 4 is installed on top of a barrier door 3. One end of the rotating frame 4 is rotatably connected to a connecting block 5, and one end of the connecting block 5 is equipped with an electric push rod 6. The bottom end of the electric push rod 6 is rotatably connected to the top of the transfer window body 2, so that the rotating frame 4 can be controlled to rotate by adjusting its own length. This allows the barrier door 3 to close automatically after a certain period of time, avoiding the problem of the controlled environment being connected to the outside world due to the user not closing the barrier door 3. The electric push rod 6... A bearing 7 is rotatably connected to the bottom end. The bottom end of the bearing 7 is rotatably installed on the top of the transfer window body 2, so that the electric push rod 6 can easily rotate on the top of the transfer window body 2 with the help of the bearing 7. A mounting bracket 8 is rotatably installed on the bottom end of the rotating frame 4. A fixing bolt 9 is snapped into the inner wall of the mounting bracket 8. The surface of the fixing bolt 9 is threaded to the inner wall of the shielding door 3, so that the rotating frame 4 and the surface of the shielding door 3 can be connected with the mounting bracket 8 with the fixing bolt 9. After the fixing bolt 9 is removed, the mounting bracket 8 and the shielding door 3 can be easily separated, which facilitates the installation and disassembly of the device.

[0027] A slide rail 13 can also be installed on the surface of wall 1. A fixing bracket 10 is slidably connected to the surface of the slide rail 13. One end of the fixing bracket 10 is connected to the surface of the transfer window body 2, so that the fixing bracket 10 can be moved by the slide rail 13 to contact the transfer window body 2, thereby installing the transfer window body 2 in the wall 1. Separating the fixing bracket 10 from the transfer window body 2 facilitates the disassembly of the transfer window body 2, making it convenient for future inspection and maintenance of the transfer window. One end of the fixing bracket 10 is rotatably connected to a limit bracket 11. A spring 12 is installed between the limit bracket 11 and the fixing bracket 10, so that the spring 12 can push the limit bracket 11 to connect with the surface of the slide rail 13, thereby connecting the fixing bracket 10 to the surface of the slide rail 13. The position of 0 is restricted to ensure the fixing effect of the transfer window body 2. Several limiting grooves 14 are opened on the surface of the slide rail 13. The inner wall of the limiting groove 14 is engaged with one end of the limiting frame 11, so as to improve the fixing effect between the limiting frame 11 and the slide rail 13 by means of the limiting groove 14, and avoid the problem of slippage between the limiting frame 11 and the slide rail 13 causing the fixing frame 10 to loosen. A rubber auxiliary plate 15 is installed at one end of the fixing frame 10. One end of the auxiliary plate 15 is connected to the surface of the transfer window body 2, so as to improve the friction between the fixing frame 10 and the transfer window body 2 by means of the auxiliary plate 15, thereby ensuring the fixing effect of the fixing frame 10 on the transfer window body 2.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A control device for a negative pressure cleanroom transfer window, comprising a wall (1) and two rotating frames (4), characterized in that: The inner wall of the wall (1) is fixedly installed with a transfer window body (2). The size of the transfer window body (2) is adapted to the size of the inner wall of the wall (1). The surface of the transfer window body (2) is rotatably connected with two shielding doors (3). The size of the shielding doors (3) is adapted to the size of the transfer window body (2). One end of the rotating frame (4) is rotatably installed with a connecting block (5). One end of the connecting block (5) is fixedly connected with an electric push rod (6).

2. The control device for a negative pressure clean transfer window according to claim 1, characterized in that: The two shielding doors (3) are symmetrically distributed about the transfer window body (2). The bottom end of the rotating frame (4) is rotatably connected to the top of the shielding door (3), and the bottom end of the electric push rod (6) is rotatably installed to the top of the transfer window body (2).

3. The control device for a negative pressure cleanroom transfer window according to claim 1, characterized in that: The bottom end of the electric push rod (6) is rotatably connected to a bearing (7), and the bottom end of the bearing (7) is fixedly installed on the top of the transfer window body (2).

4. The control device for a negative pressure clean transfer window according to claim 1, characterized in that: One end of the rotating frame (4) is rotatably connected to the mounting frame (8), and the inner wall of the mounting frame (8) is fitted with a fixing bolt (9), the surface of the fixing bolt (9) being threaded into the inside of the shielding door (3).

5. The control device for a negative pressure clean transfer window according to claim 1, characterized in that: The surface of the wall (1) is fixedly connected to two slide rails (13), and the surface of the slide rails (13) is slidably connected to a fixing frame (10). The two fixing frames (10) are symmetrically distributed about the transfer window body (2), and one end of the fixing frame (10) is movably installed on the surface of the transfer window body (2). The cross section of the slide rail (13) is T-shaped, and the size of the slide rail (13) surface is compatible with the size of the inner wall of the fixing frame (10).

6. The control device for a negative pressure cleanroom transfer window according to claim 5, characterized in that: A limiting frame (11) is rotatably mounted on the surface of the fixed frame (10), and a spring (12) is fixedly connected between the limiting frame (11) and the fixed frame (10).

7. The control device for a negative pressure cleanroom transfer window according to claim 5, characterized in that: The slide rail (13) has several limiting grooves (14) on its surface. The limiting grooves (14) are evenly distributed on the surface of the slide rail (13). The inner wall of the limiting groove (14) is engaged with one end of the limiting frame (11).

8. The control device for a negative pressure cleanroom transfer window according to claim 5, characterized in that: An auxiliary plate (15) is fixedly installed at one end of the fixed frame (10). The auxiliary plate (15) is a rubber plate, and one end of the auxiliary plate (15) is movably connected to the surface of the transfer window body (2). The size and specifications of the surface of the auxiliary plate (15) are compatible with the size and specifications of the surface of the fixed frame (10).

Images