A clean door that can be quickly installed and disassembled

Abstract

The present invention relates to the technical field of clean doors, and in particular to a clean door that can be quickly installed and disassembled. It includes a main frame and a main door panel. The main door panel is located on the inner ring side of the main frame. A secondary door panel is rotatably inserted into the front surface of the main door panel. The right end of the secondary door panel is a concave structure. A double-headed telescopic bolt structure that can be telescoped up and down is installed in the concave structure of the secondary door panel. The inner ring surface of the main frame is in the shape of an annular groove. An annular expansion bladder is arranged inside the annular groove of the main frame. The outer ring surface of the annular expansion bladder is fixed to the inner ring surface of the annular groove of the main frame. Cavities are provided on both sides of the upper and lower lines of the annular expansion bladder inside the main frame. The present invention can drive the bending plate and the pneumatic structure to push the gas in the air chamber box into the annular expansion bladder through the air pipe. The filled gas causes the annular expansion bladder to expand inward to fully seal the gap between the main door panel and the main frame, and separate and seal the spaces on both sides of the main door panel.

Description

Technical Field

[0001] The present invention relates to the technical field of clean doors, and in particular to a clean door that can be quickly installed and disassembled. Background Art

[0002] Clean doors are applicable to purification workshops, hospitals, pharmaceutical factories, food factories and other places with clean requirements. The door body is integrally formed by die-casting, seamless, corrosion-resistant, and the overall performance of the product is good. It has the advantages of beautiful appearance, flatness, high strength, corrosion resistance, no dust accumulation, no dust generation, and easy cleaning.

[0003] Chinese Patent Publication No. CN213510237U discloses a steel clean door that can be quickly installed and disassembled, including a clean door main body. An efficient sound-absorbing and protective mechanism is arranged inside the clean door main body. The efficient sound-absorbing and protective mechanism includes sound-absorbing sponge, partition steel plate, rubber film, and foam glass layer. A rubber strip is arranged at the upper end of the clean door main body. A quick disassembly and assembly mechanism is arranged on one outer surface of the clean door main body. The quick disassembly and assembly mechanism includes a frame, a connecting shaft, a bolt, a mounting hole, and an anti-abrasion bump. A door lock, a handle, a fingerprint unlocker, and a tempered glass window are arranged at the front end of the clean door main body. The door lock is located below the handle, the fingerprint unlocker is located above the handle, and the tempered glass window is located above the fingerprint unlocker. The steel clean door that can be quickly installed and disassembled described in this utility model has a simple structure and is easy to align, facilitating quick installation and disassembly, and has good sound insulation effect, bringing a better use prospect. The above related technologies have the following defects: under the convenient disassembly installation of the clean door, there are movable gaps at the connection between the door frame and the door panel, resulting in a relatively low overall sealing performance and being unable to be applied to environments that require sealing. Summary of the Invention

[0004] In order to ensure the sealing performance between the overall clean door, the present invention provides a clean door that can be quickly installed and disassembled.

[0005] A clean door that can be quickly installed and disassembled provided by the present invention adopts the following technical solution: It includes a main frame and a main door panel. The main door panel is located on the inner ring side of the main frame. A secondary door panel is rotatably inserted into the front surface of the main door panel. The right end of the secondary door panel is a concave structure. A double-headed telescopic bolt structure that can be telescoped up and down is installed in the concave structure of the secondary door panel. The inner ring surface of the main frame is in the shape of an annular groove. An annular expansion bladder is arranged inside the annular groove of the main frame. The outer ring surface of the annular expansion bladder is fixed to the inner ring surface of the annular groove of the main frame. Cavities are opened on both sides of the upper and lower sides of the annular expansion bladder inside the main frame. Hard tubes are fixedly inserted into the inner walls of the two cavities close to each other. The annular expansion bladder is slidably sleeved on the outer surface of the hard tube. A terminal shaft is rotatably inserted into the hard tube. One end of the terminal shaft close to the main door panel is slidably inserted with a transmission rod shaft in a matching manner. The main door panel is slidably sleeved on the outer surface of the transmission rod shaft. The secondary door panel is slidably sleeved on the outer surface of the transmission rod shaft. A delay structure is installed at one end of the transmission rod shaft located inside the main door panel. The delay structure is installed inside the main door panel. The part of the transmission rod shaft located outside the main door panel is prismatic. One end of the transmission rod shaft located inside the concave structure of the secondary door panel is connected to the double-headed telescopic bolt structure.

[0006] An air chamber box is installed inside the cavity. A pneumatic structure is slidably inserted into the air chamber box. One end of the pneumatic structure close to the transmission rod shaft slides through the inside of the air chamber box. A bent plate is slidably sleeved on the outside of the air chamber box. One end of the pneumatic structure located outside the air chamber box is fixed to the bent plate. A toothed plate is fixed to the bottom surface of the bent plate. A gear is meshed with the back surface of the toothed plate. The gear is rotatably inserted into the cavity. The shaft rod of the gear is driven by a conveyor belt with the terminal shaft. A positioning structure is installed on the front surface of the secondary door panel. The other end of the positioning structure is connected to the front surface of the main frame. A ventilation pipe is fixedly penetrated through the left end of the air chamber box. The other end of the ventilation pipe fixedly penetrates the inner wall of the cavity and is fixedly communicated with the annular expansion bladder.

[0007] Optionally, the delay structure includes a long cover cylinder. The long cover cylinder is slidably sleeved on one end of the transmission rod shaft located inside the main door panel. The long cover cylinder is fixedly inserted into the main door panel. Two dial plates are fixed to one end of the transmission rod shaft located inside the long cover cylinder. Baffles are fixed to both sides of the inner ring surface of the long cover cylinder and located on both sides of the dial plates.

[0008] Optionally, the double-headed telescopic bolt structure includes a double-headed threaded rod and a control cylinder. The middle part of the control cylinder is fixedly sleeved on the outer surface of the double-headed threaded rod. The two ends of the double-headed threaded rod are respectively coaxially threaded and inserted into the adjacent transmission rod shafts. The control cylinder is rotatably inserted into the concave structure of the secondary door panel.

[0009] Optionally, the air pressure structure includes an air pressure plate and two air pressure rods. The air pressure plate is slidably sleeved on the outer surface of the air pressure rods. The other end of the air pressure rods slidably penetrates through the inside of the air chamber box. The air chamber box is slidably sleeved on the outer surface of the air pressure plate. The air pressure rods are elastically connected to the air pressure plate. One end of the air pressure rod located outside the air chamber box is fixed to the bent plate.

[0010] Optionally, the positioning structure includes a control rod and a grip cylinder. Both ends of the control rod are fixed to the secondary door panel. The grip cylinder is slidably sleeved in the middle position of the control rod. An inner rod is slidably inserted into the inside of the control rod. A synchronous cylinder is slidably sleeved on the outer surface of the control rod and above the grip cylinder. Both the inner ring surfaces of the synchronous cylinder and the grip cylinder slidably penetrate through the outer ring surface of the control rod. One end of the synchronous cylinder and the grip cylinder located inside the control rod are fixedly sleeved on the outer surface of the inner rod. The lower end of the inner rod is elastically connected to the control rod. A lower clamping block is fixed to the upper surface of the synchronous cylinder. The upper surface of the lower clamping block is a structure with multiple protrusions. An upper clamping plate is slidably engaged with the upper surface of the lower clamping block. The upper clamping plate is fixed to the main frame. Multiple grooves are formed on the bottom surface of the upper clamping plate and are matched with the protrusion structures of the lower clamping block.

[0011] Optionally, a vertical groove-shaped structure is formed on the outer surface of the control rod and is matched with the inner ring surfaces of the grip cylinder and the synchronous cylinder. The upper end of the control rod is located above the upper surface of the main door panel.

[0012] Optionally, both the left and right ends of the main door panel and the secondary door panel are semi-circular arcs. The right-end arc of the main door panel is concentric with the right-end arc of the secondary door panel. The transmission rod shaft is coaxially arranged with the right-end arc of the main door panel. The left and right ends of the main door panel are tangent to the left and right inner side walls of the main frame. Sealing rods are arranged in front of the left and right ends of the main frame. The arc space between the main frame and the main door panel is matched with the rear end of the sealing rods. The two sealing rods are respectively in sliding contact with the left and right inner side walls of the main frame. Vertical shafts are fixedly penetrated through the upper surfaces of the two sealing rods. Trajectory frames are slidably sleeved on the upper ends of the two vertical shafts. The trajectory frames are fixed to the front surface of the main frame. A double-headed elastic telescopic rod is arranged between the main frame and the control rod. The two ends of the double-headed elastic telescopic rod are respectively fixedly sleeved on the upper ends of the two vertical shafts. A vertical block is fixed to the upper surface of the middle part of the double-headed elastic telescopic rod. A bottom groove frame is slidably sleeved on the upper surface of the vertical block. The back surface of the bottom groove frame is fixed to the front surface of the main frame. The vertical block is elastically connected to the inner wall of the bottom groove frame.

[0013] Optionally, the shape of the upper clamping plate is an arc. The arc axis of the upper clamping plate is coaxially arranged with the transmission rod shaft. The lower clamping block is an arc-shaped block structure that matches the upper clamping plate.

[0014] Optionally, the interior of the track frame is in the shape of a through groove. The rear end of the track frame is arranged in a longitudinal straight line, and the front ends of the two track frames are bent towards the ends away from each other. The length of the inner groove of the straight end of the track frame is greater than the distance between the back surface of the caulking rod and the front surface of the main frame. The distance between the mutually remote surfaces of the two caulking rods and the inner wall of one side of the adjacent main frame is less than the transverse distance of the inner groove of the bent end of the track frame.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] 1. By providing an annular expansion bladder, an air chamber box, a bent plate and a transmission rod shaft, when pushing the secondary door panel and the main door panel to close, the transmission rod shaft is driven to rotate. The transmission rod shaft drives the gear to rotate through a conveyor belt. The gear drives the bent plate and the pneumatic structure to push the gas in the air chamber box into the annular expansion bladder through a ventilation pipe by meshing with a toothed plate. The inflated gas causes the annular expansion bladder to expand inwards to fully seal the gap between the main door panel and the main frame, separating and enclosing the spaces on both sides of the main door panel.

[0017] 2. By providing a track frame, a double-headed elastic telescopic rod and a caulking rod, when the main door panel is closed, the control rod pushes the double-headed elastic telescopic rod to move backwards, driving the two caulking rods to seal the space between the main frame and the main door panel respectively. The caulking rod assists the arc end of the main door panel to stably form a seal with the annular expansion bladder. When pulling the control rod away from the main frame, the vertical block elastically connected to the bottom groove frame has a tendency to drive the double-headed elastic telescopic rod to move forwards. When the double-headed elastic telescopic rod initially moves forwards, the vertical shaft moves through the straight end of the track frame, gradually driving the caulking rod to move in front of the main frame. Then when the double-headed elastic telescopic rod continues to move away from the main frame, the double-headed elastic telescopic rod pushes the vertical shaft and the caulking rod away from the main door panel under its own elasticity, so that the caulking rod no longer interferes with the opening of the main door panel.

[0018] 3. By providing a long cover cylinder, a dial plate and a baffle plate, when closing the main door panel and the secondary door panel, first control the main door panel to close and seal the main frame, and then close the secondary door panel to contact the main door panel. When the secondary door panel is closed after the main door panel is closed, then push the gas in the air chamber box into the annular expansion bladder. When opening, first pull the secondary door panel to open, causing the annular expansion bladder to deflate, and then pull the main door panel to open, effectively reducing the friction between the main door panel and the annular expansion bladder in the inflated state and increasing the service life of the annular expansion bladder.

[0019] 4. In the present invention, by providing a double-headed threaded rod and a control cylinder, during disassembly, the control cylinder is rotated to drive the double-headed threaded rod to engage with the two drive rod shafts respectively, driving the two drive rod shafts to move closer to each other, controlling the drive rod shafts to be completely retracted into the main door panel, and quickly separating the main door panel from the main frame. During installation, the drive rod shaft is coaxially aligned with the hard pipe, and then the double-headed threaded rod is rotated to control the drive rod shafts to move away from each other and insert into the hard pipe, enabling the drive rod shafts to drive the hard pipe to rotate synchronously and installing the main door panel and the main frame together. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure in an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the control rod connected to the inner rod in an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the internal structure of the cavity in an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the structure of the conveyor belt connected to the gear in an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of the structure of the pneumatic rod connected to the pneumatic plate in an embodiment of the present invention;

[0025] Figure 6 is a top view schematic diagram of a partial structure in an embodiment of the present invention;

[0026] Figure 7 is a schematic diagram of the structure of the double-axis threaded rod connected to the control cylinder in an embodiment of the present invention;

[0027] Figure 8 is a front view schematic diagram of a partial structure in an embodiment of the present invention;

[0028] Figure 9 is in an embodiment of the present invention Figure 7 enlarged schematic diagram of the structure at A.

[0029] Reference numerals: 1, main frame; 2, main door panel; 3, secondary door panel; 4, double-headed telescopic bolt structure; 41, double-headed threaded rod; 42, control cylinder; 5, annular expansion bladder; 6, cavity; 7, rigid tube; 8, end shaft; 9, drive rod shaft; 10, delay structure; 101, long cover cylinder; 102, dial plate; 103, baffle; 11, air chamber box; 12, air pressure structure; 121, air pressure plate; 122, air pressure rod; 13, gear; 14, bent plate; 15, toothed plate; 16, positioning structure; 161, control rod; 162, grip cylinder; 163, inner rod; 164, synchronous cylinder; 165, lower catch block; 166, upper clamping plate; 17, ventilation pipe; 18, conveyor belt; 19, seam blocking rod; 20, track frame; 21, vertical shaft; 22, double-headed elastic telescopic rod; 23, bottom groove frame; 24, vertical block. Detailed implementation mode

[0030] The following will further describe the present invention in detail in conjunction with the attached Figures 1 - 9 drawings.

[0031] An embodiment of the present invention discloses a clean door that can be quickly installed and disassembled. As Figures 1 - 9 shown, it includes a main frame 1 and a main door panel 2. The main door panel 2 is located on the inner ring side of the main frame 1. A secondary door panel 3 is rotatably inserted into the front surface of the main door panel 2. The right end of the secondary door panel 3 is a concave structure. A double-headed telescopic bolt structure 4 that can expand and contract up and down is installed in the concave structure of the secondary door panel 3. The inner ring surface of the main frame 1 is a circular groove shape. An annular expansion bladder 5 is arranged inside the circular groove of the main frame 1. The outer ring surface of the annular expansion bladder 5 is fixed to the inner ring surface of the circular groove of the main frame 1. The annular expansion bladder 5 will expand after being filled with gas, and when the gas inside the annular expansion bladder 5 is extracted, the annular expansion bladder 5 will contract and be received inside the circular groove of the main frame 1.

[0032] Inside the main frame 1 and on both sides of the upper line of the annular expansion bladder 5, cavities 6 are provided. On the inner walls of the two cavities 6 close to each other, hard tubes 7 are fixedly inserted. The annular expansion bladder 5 is slidably sleeved on the outer surface of the hard tube 7. An end shaft 8 is rotatably inserted into the hard tube 7. One end of the end shaft 8 close to the main door panel 2 is slidably inserted with a transmission rod shaft 9 in a matching manner. The main door panel 2 is slidably sleeved on the outer surface of the transmission rod shaft 9. The secondary door panel 3 is slidably sleeved on the outer surface of the transmission rod shaft 9. One end of the transmission rod shaft 9 inside the main door panel 2 is provided with a delay structure 10. The delay structure 10 is installed inside the main door panel 2. The delay structure 10 includes a long cover cylinder 101. The long cover cylinder 101 is slidably sleeved on one end of the transmission rod shaft 9 inside the main door panel 2. The long cover cylinder 101 is fixedly inserted into the main door panel 2. Two dial plates 102 are fixed to one end of the transmission rod shaft 9 inside the long cover cylinder 101. On the inner ring surface of the long cover cylinder 101 and on both sides of the dial plate 102, baffles 103 are fixed. When the transmission rod shaft 9 rotates, it drives the dial plates 102 to rotate synchronously. When the dial plates 102 rotate, the main door panel 2 will be pushed to rotate only after the dial plates 102 contact the baffles 103 in the moving direction. When the secondary door panel 3 is pulled open, the annular expansion bladder 5 contracts first, and then the main door panel 2 rotates, reducing the wear of the annular expansion bladder 5 when the main door panel 2 rotates. The part of the transmission rod shaft 9 outside the main door panel 2 is prismatic, and when the secondary door panel 3 rotates, it can drive the transmission rod shaft 9 to rotate synchronously.

[0033] One end of the transmission rod shaft 9 inside the concave structure of the secondary door panel 3 is connected to the double-headed telescopic plug structure 4.

[0034] The double-headed telescopic plug structure 4 includes a double-headed threaded rod 41 and a control cylinder 42. The middle part of the control cylinder 42 is fixedly sleeved on the outer surface of the double-headed threaded rod 41. The two ends of the double-headed threaded rod 41 are respectively coaxially threaded and inserted into the adjacent transmission rod shafts 9. The control cylinder 42 is rotatably inserted into the concave structure of the secondary door panel 3. When the double-headed threaded rod 41 rotates forward and backward, the double-headed threaded rod 41 drives the two transmission rod shafts 9 to approach or move away from each other respectively. When the two transmission rod shafts 9 approach and separate from the end shaft 8 and retract into the main door panel 2, the main door panel 2 can be separated from the main frame 1 to complete disassembly. When the two transmission rod shafts 9 move away from each other, they can be inserted into the end shaft 8 to complete the installation of the main door panel 2.

[0035] Inside the cavity 6, an air chamber box 11 is installed. Inside the air chamber box 11, a pneumatic structure 12 is slidably inserted. One end of the pneumatic structure 12 close to the transmission rod shaft 9 slidably penetrates the inside of the air chamber box 11. An elbow plate 14 is slidably sleeved outside the air chamber box 11. One end of the pneumatic structure 12 located outside the air chamber box 11 is fixed to the elbow plate 14. The pneumatic structure 12 includes a pneumatic plate 121 and two pneumatic rods 122. The pneumatic plate 121 is slidably sleeved on the outer surface of the pneumatic rod 122. The other end of the pneumatic rod 122 slidably penetrates the inside of the air chamber box 11. The air chamber box 11 is slidably sleeved on the outer surface of the pneumatic plate 121. The pneumatic rod 122 is elastically connected to the pneumatic plate 121. One end of the pneumatic rod 122 located outside the air chamber box 11 is fixed to the elbow plate 14. When the pneumatic rod 122 pushes the pneumatic plate 121 through elastic connection to push the gas in the air chamber box 11 into the annular expansion bladder 5, when the annular expansion bladder 5 completes the sealing and reaches the maximum expansion, when the pneumatic rod 122 continues to move to the left, the pneumatic plate 121 elastically moves relative to the pneumatic rod 122.

[0036] A toothed plate 15 is fixed to the bottom surface of the elbow plate 14. A gear 13 meshes with the back surface of the toothed plate 15. The gear 13 is rotatably inserted inside the cavity 6. The shaft rod of the gear 13 is driven by the end shaft 8 and the conveyor belt 18. When the transmission rod shaft 9 rotates, it provides power for the rotation of the gear 13 through the matching end shaft 8 and conveyor belt 18.

[0037] A positioning structure 16 is installed on the front surface of the secondary door panel 3. The other end of the positioning structure 16 is connected to the front surface of the main frame 1.

[0038] The positioning structure 16 includes a control rod 161 and a grip cylinder 162. Both ends of the control rod 161 are fixed to the secondary door panel 3. The grip cylinder 162 is slidably sleeved at the middle position of the control rod 161. An inner rod 163 is slidably inserted into the interior of the control rod 161. A synchronous cylinder 164 is slidably sleeved on the outer surface of the control rod 161 and above the grip cylinder 162. The inner ring surfaces of both the synchronous cylinder 164 and the grip cylinder 162 slidably penetrate through the outer ring surface of the control rod 161. A vertical groove-like structure is formed on the outer surface of the control rod 161 and is in cooperation with the inner ring surfaces of the grip cylinder 162 and the synchronous cylinder 164. The upper end of the control rod 161 is located above the upper surface of the main door panel 2, enabling the synchronous cylinder 164 and the grip cylinder 162 to move up and down on the surface of the control rod 161. One end of the synchronous cylinder 164 and the grip cylinder 162 located inside the control rod 161 is fixedly sleeved on the outer surface of the inner rod 163. The lower end of the inner rod 163 is elastically connected to the control rod 161. A lower clamping block 165 is fixed to the upper surface of the synchronous cylinder 164. The upper surface of the lower clamping block 165 has a plurality of convex structures. An upper clamping plate 166 is slidably engaged with the upper surface of the lower clamping block 165. The upper clamping plate 166 is fixed to the main frame 1. A plurality of grooves are formed on the bottom surface of the upper clamping plate 166 and are in cooperation with the convex structures of the lower clamping block 165. The shape of the upper clamping plate 166 is arc-shaped. The arc axis of the upper clamping plate 166 is coaxial with the transmission rod shaft 9. The lower clamping block 165 is an arc-shaped block structure that cooperates with the upper clamping plate 166. The elastic connection between the inner rod 163 and the control rod 161 has a tendency to push the inner rod 163 upward. By pushing the lower clamping block 165 upward through the synchronous cylinder 164 to engage with the upper clamping plate 166, the position of the secondary door panel 3 is fixed. By pulling the grip cylinder 162 downward to drive the lower clamping block 165 to disengage from the upper clamping plate 166, the relative movement of the secondary door panel 3 with respect to the main frame 1 can be controlled. A circular protrusion is provided on the inner ring side of the main frame 1 and behind the main door panel 2. When the main door panel 2 contacts the circular protrusion of the main frame 1, the main door panel 2 just seals the inside of the main frame 1.

[0039] Both the left and right ends of the main door panel 2 and the secondary door panel 3 are semi-circular arcs. The right-end arc of the main door panel 2 is concentric with the right-end arc of the secondary door panel 3. The transmission rod shaft 9 is coaxially arranged with the right-end arc of the main door panel 2. The left and right ends of the main door panel 2 are tangent to the left and right inner walls of the main frame 1. At the front of both the left and right ends of the main frame 1, there are caulking rods 19 arranged. The arc space between the main frame 1 and the main door panel 2 cooperates with the rear end of the caulking rod 19. The two caulking rods 19 are respectively in sliding contact with the left and right inner walls of the main frame 1. A vertical shaft 21 is fixedly penetrated through the upper surface of each of the two caulking rods 19. A track frame 20 is slidably sleeved on the upper ends of the two vertical shafts 21. The track frame 20 is fixed to the front of the main frame 1. Between the main frame 1 and the control rod 161, there is a double-headed elastic telescopic rod 22. The two ends of the double-headed elastic telescopic rod 22 are respectively fixedly sleeved on the upper ends of the two vertical shafts 21. On the upper surface of the middle part of the double-headed elastic telescopic rod 22, there is a vertical block 24 fixedly arranged. A bottom groove frame 23 is slidably sleeved on the upper surface of the vertical block 24. The back of the bottom groove frame 23 is fixed to the front of the main frame 1. The vertical block 24 is elastically connected to the inner wall of the bottom groove frame 23. The elastic connection between the vertical block 24 and the bottom groove frame 23 has a tendency to push the vertical block 24 and the double-headed elastic telescopic rod 22 forward. The inside of the track frame 20 is of a through-groove structure. The rear end of the track frame 20 is arranged in a longitudinal straight line. The front ends of the two track frames 20 are bent towards the ends away from each other. The length of the inner groove of the straight part of the track frame 20 is greater than the distance between the back of the caulking rod 19 and the front of the main frame 1. The distance between the mutually remote sides of the two caulking rods 19 and the adjacent inner wall of the main frame 1 is less than the transverse distance of the inner groove of the bent part of the track frame 20. When the control rod 161 moves forward, the vertical block 24 moves forward under the elastic action with the bottom groove frame 23. The vertical shaft 21 moves through the straight part of the track frame 20 and gradually drives the caulking rod 19 to move to the front of the main frame 1. Then when the double-headed elastic telescopic rod 22 continues to move away from the main frame 1, the vertical shaft 21 moves to the bent part of the track frame 20. The double-headed elastic telescopic rod 22, under its own elasticity, pushes the vertical shaft 21 and the caulking rod 19 away from the main door panel 2, so that the caulking rod 19 no longer interferes with the opening of the main door panel 2.

[0040] A ventilation pipe 17 is fixedly penetrated through the left end of the air chamber box 11. The other end of the ventilation pipe 17 is fixedly penetrated through the inner wall of the cavity 6 and is fixedly communicated with the annular expansion bladder 5.

[0041] The working principle is as follows: During installation, the transmission rod shaft 9 is controlled to be coaxial with the rigid tube 7. Then, the double-headed threaded rod 41 is rotated to control the transmission rod shafts 9 to move away from each other and insert into the rigid tube 7, so that the transmission rod shafts 9 can drive the rigid tube 7 to rotate synchronously. First, the main door panel 2 is controlled to close to block the main frame 1. Then, the sub-door panel 3 is closed to contact the main door panel 2. When the sub-door panel 3 rotates, the conveyor belt 18 is driven by the transmission rod shaft 9. The gear 13 meshes with the toothed plate 15, and drives the air pressure plate 121 through the bending plate 14 to push the gas in the air chamber box 11 into the annular expansion bladder 5 through the ventilation pipe 17. The inflated gas causes the annular expansion bladder 5 to expand inward to fully block the gap between the main door panel 2 and the main frame 1, separating and closing the spaces on both sides of the main door panel 2. At the same time, when the control rod 161 approaches the main frame 1, it drives the two caulking rods 19 to block the spaces between the main frame 1 and the main door panel 2 respectively. The caulking rods 19 assist the arc end of the main door panel 2 to stably form a seal with the annular expansion bladder 5, separating and closing the spaces on both sides of the main door panel 2.

[0042] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A clean door that can be quickly installed and removed, comprising a main frame (1) and a main door panel (2), characterized in that: The main door panel (2) is located on the inner ring side of the main frame (1), and a secondary door panel (3) is rotatably plugged into the front of the main door panel (2). The right end of the secondary door panel (3) is a concave structure, and a double-headed telescopic bolt structure (4) that can be telescoped up and down is installed in the concave structure of the secondary door panel (3). The inner ring surface of the main frame (1) is an annular groove shape, and an annular expansion bag (5) is arranged inside the annular groove of the main frame (1). The outer ring surface of the annular expansion bag (5) is fixed to the inner ring surface of the annular groove of the main frame (1). Cavities (6) are opened inside the main frame (1) and on both sides of the upper line of the annular expansion bag (5). A hard tube (7) is fixedly plugged into the inner wall of one side of the two cavities (6) that are close to each other. The annular expansion bag (5) is slidably sleeved on the outer surface of the hard tube (7). An end shaft (8) is rotatably plugged into the inside of the hard tube (7), and a transmission rod shaft (9) is slidably plugged into the end of the end shaft (8) close to the main door panel (2). The main door panel (2) The auxiliary door panel (3) is slidably sleeved on the outer surface of the transmission rod shaft (9), and the auxiliary door panel (3) is slidably sleeved on the outer surface of the transmission rod shaft (9). A delay structure (10) is installed at one end of the transmission rod shaft (9) located inside the main door panel (2). The delay structure (10) is installed inside the main door panel (2). The delay structure (10) includes a long cover tube (101). The long cover tube (101) is slidably sleeved on one end of the transmission rod shaft (9) located inside the main door panel (2). ) is fixedly inserted in the interior of the main door panel (2), one end of the transmission rod shaft (9) located inside the long cover tube (101) is fixed with two shifting plates (102), the inner annular surface of the long cover tube (101) and both sides of the shifting plates (102) are fixed with baffles (103), the portion of the transmission rod shaft (9) located outside the main door panel (2) is prismatic, and one end of the transmission rod shaft (9) located inside the concave structure of the auxiliary door panel (3) is connected to the double-head telescopic bolt structure (4); An air chamber box (11) is installed inside the cavity (6), and a pneumatic structure (12) is slidably inserted inside the air chamber box (11). One end of the pneumatic structure (12) close to the transmission rod shaft (9) slides through the inside of the air chamber box (11), and the outside of the air chamber box (11) is slidably sleeved with a bending plate (14). One end of the pneumatic structure (12) located outside the air chamber box (11) is fixed to the bending plate (14), and the pneumatic structure (12) includes a pneumatic plate (121) and two pneumatic rods (122). The pneumatic plate (121) is slidably sleeved on the outer surface of the pneumatic rod (122), and the other end of the pneumatic rod (122) slides through the inside of the air chamber box (11), and the air chamber box (11) is slidably sleeved on the outer surface of the pneumatic plate (121). The pressure rod (122) is elastically connected to the air pressure plate (121), one end of the air pressure rod (122) located outside the air cavity box (11) is fixed to the bending plate (14), a tooth plate (15) is fixed to the bottom surface of the bending plate (14), a gear (13) is meshed on the back of the tooth plate (15), the gear (13) is rotatably plugged into the interior of the cavity (6), the shaft of the gear (13) and the end shaft (8) are driven by a conveyor belt (18), a positioning structure (16) is installed on the front of the auxiliary door plate (3), the other end of the positioning structure (16) is connected to the front of the main frame (1), a ventilation pipe (17) is fixedly penetrated at the left end of the air cavity box (11), and the other end of the ventilation pipe (17) is fixedly penetrated through the inner wall of the cavity (6) and is fixedly connected to the annular expansion bag (5).

2. A clean door that can be quickly installed and removed according to claim 1, characterized in that: The double-ended telescopic latch structure (4) comprises a double-ended threaded rod (41) and a control cylinder (42); the middle portion of the control cylinder (42) is fixedly sleeved on the outer surface of the double-ended threaded rod (41); the two ends of the double-ended threaded rod (41) are respectively coaxially threadedly inserted into the interior of adjacent transmission rod shafts (9); and the control cylinder (42) is rotatably inserted into the interior of the concave structure of the auxiliary door panel (3).

3. A clean door that can be quickly installed and removed according to claim 1, characterized in that: The positioning structure (16) comprises a control rod (161) and a grip tube (162), the two ends of the control rod (161) are fixed to the auxiliary door plate (3), the grip tube (162) is slidably sleeved in the middle position of the control rod (161), an inner rod (163) is slidably inserted inside the control rod (161), a synchronous tube (164) is slidably sleeved on the outer surface of the control rod (161) and located above the grip tube (162), the inner annular surfaces of the synchronous tube (164) and the grip tube (162) both slide through the outer annular surface of the control rod (161), and the synchronous tube (164) and the grip tube (162) are slidably sleeved. One end of (162) located on the inner side of the control rod (161) is fixedly sleeved on the outer surface of the inner rod (163), and the lower end of the inner rod (163) is elastically connected to the control rod (161). A lower clamping block (165) is fixed on the upper surface of the synchronous cylinder (164), and the upper surface of the lower clamping block (165) is a plurality of protrusion-shaped structures. An upper clamping plate (166) is slidably matched on the upper surface of the lower clamping block (165), and the upper clamping plate (166) is fixed to the main frame (1), and a plurality of grooves matching the protrusion-shaped structures of the lower clamping block (165) are formed on the bottom surface of the upper clamping plate (166).

4. A clean door capable of rapid installation and removal according to claim 3, characterized in that: The outer surface of the control rod (161) is provided with a vertical groove structure that matches the inner annular surfaces of the grip tube (162) and the synchronization tube (164), and the upper end of the control rod (161) is located above the upper surface of the main door panel (2).

5. The clean door that can be quickly installed and removed according to claim 3 is characterized in that: The left and right ends of the main door panel (2) and the auxiliary door panel (3) are both semi-circular arc-shaped, the right end arc of the main door panel (2) is concentric with the right end arc of the auxiliary door panel (3), the transmission rod shaft (9) is coaxially arranged with the right end arc of the main door panel (2), the left and right ends of the main door panel (2) are tangent to the left and right inner walls of the main frame (1), and caulking rods (19) are arranged in front of the left and right ends of the main frame (1), the arc space between the main frame (1) and the main door panel (2) and the rear end of the caulking rod (19) are matched, the two caulking rods (19) are respectively in sliding contact with the left and right inner walls of the main frame (1), and the upper surfaces of the two caulking rods (19) are fixedly penetrated A vertical shaft (21) is provided, and the upper ends of the two vertical shafts (21) are both slidably sleeved with a track frame (20), the track frame (20) is fixed to the front side of the main frame (1), a double-headed elastic telescopic rod (22) is provided between the main frame (1) and the control rod (161), the two ends of the double-headed elastic telescopic rod (22) are respectively fixedly sleeved on the upper ends of the two vertical shafts (21), a vertical block (24) is fixed on the upper surface of the middle part of the double-headed elastic telescopic rod (22), a bottom groove frame (23) is slidably sleeved on the upper surface of the vertical block (24), the back side of the bottom groove frame (23) is fixed to the front side of the main frame (1), and the vertical block (24) is elastically connected to the inner wall of the bottom groove frame (23).

6. The clean door that can be quickly installed and removed according to claim 3 is characterized in that: The upper clamping plate (166) is in the shape of an arc, the arc axis of the upper clamping plate (166) is coaxially arranged with the transmission rod shaft (9), and the lower clamping block (165) is an arc-shaped block structure that matches the upper clamping plate (166).

7. The clean door capable of rapid installation and removal according to claim 5, characterized in that: The interior of the track frame (20) is a through-groove structure. The rear end of the track frame (20) is arranged in a longitudinal straight line. The front ends of the two track frames (20) are bent toward one end away from each other. The length of the inner groove of the straight end of the track frame (20) is greater than the distance between the back of the caulking rod (19) and the front of the main frame (1). The distance between the side of the two caulking rods (19) away from each other and the inner wall of one side of the adjacent main frame (1) is less than the lateral distance of the inner groove of the bent end of the track frame (20).

Images