Airtight door for cabin to prevent air backflow

Abstract

The present application relates to a cabin airtight door for preventing air backflow, and relates to the field of cabins. It includes: an external structure component, the external structure component includes a cabin outer wall and a cabin inner wall arranged at intervals from each other, and the cabin outer wall and the cabin inner wall are both installed with wall doors; an anti-backflow component, the anti-backflow component includes a rotatable anti-backflow pipe installed between the cabin outer wall and the cabin inner wall, an inlet and outlet pipe door installed on the side wall of the anti-backflow pipe and corresponding to the wall door, and a second support table installed at the lower end of the anti-backflow pipe for users to stand; a linkage component, the linkage component is installed between the cabin outer wall and the cabin inner wall and is used to drive the anti-backflow component to rotate. The present invention has a good effect of preventing the air on both sides of the cabin airtight door from flowing and exchanging, so that it is difficult for the air in the ward with infectious viruses to flow back to the cabin corridor, thereby improving the safety performance of the cabin.

Description

Technical Field

[0001] The present application relates to the field of shelters, and in particular to an airtight door of a shelter for preventing air backflow. Background Art

[0002] The square cabins used to treat patients have been widely popularized and used in many places. In actual work, the airtight doors used to seal the square cabins to reduce (prevent) air flow exchange have attracted people's attention.

[0003] The structure of the existing airtight door of the shelter is relatively simple, and it can only have a good sealing effect when the shelter is in a closed state. The above-mentioned existing airtight door of the shelter has a poor effect in preventing the air on both sides of the shelter airtight door from flowing and exchanging when people pass through the shelter airtight door, so there is a risk that the air in the ward with infectious viruses will flow back to the shelter corridor and then infect other wards, which has a serious safety hazard. Therefore, it is necessary to make improvements. Summary of the invention

[0004] The embodiment of the present application provides an airtight door for a cabin for preventing air backflow, so as to solve the problem that the airtight door for a cabin in the related art has serious potential safety hazards.

[0005] In a first aspect, an airtight door for preventing air backflow is provided, which comprises: an external structure assembly, the external structure assembly comprising an outer wall and an inner wall of the cabin arranged at intervals from each other, and wall doors are installed on the outer wall and the inner wall of the cabin; an anti-backflow assembly, the anti-backflow assembly comprising an anti-backflow pipe rotatably installed between the outer wall and the inner wall of the cabin, an inlet and outlet pipe door installed on the side wall of the anti-backflow pipe and corresponding to the wall door, and a second supporting table installed at the lower end of the anti-backflow pipe and used for a user to stand; a linkage assembly, the linkage assembly is installed between the outer wall and the inner wall of the cabin and used to drive the anti-backflow assembly to rotate.

[0006] In some technical schemes, the linkage component includes: a first supporting table, on which a linkage motor is arranged, and a first transmission component for driving the anti-backflow pipe to rotate is connected between the output end of the linkage motor and the anti-backflow pipe; a backflow pipe rotating part, which includes a ball installed on one end of the first supporting table away from the second supporting table, and a tube slide installed between the outer wall and the inner wall of the cabin and used to place the ball.

[0007] In some technical schemes, the first transmission assembly includes: a first linkage gear, which is arranged at one end of the first support surface away from the second support surface; a linkage internal tooth, which is installed on the side wall of the anti-backflow pipe through an annular inner plate; the middle part of the first linkage gear is connected to the output end of the linkage motor, and the outer edge of the first linkage gear is meshed with the linkage internal tooth.

[0008] Some technical solutions also include a purification component, which includes: a disinfection device, the air inlet end of the disinfection device is connected to the inside of the anti-backflow pipe, and the air outlet end of the disinfection device is equipped with a spray component that can spray disinfectant into the inside of the anti-backflow pipe.

[0009] In some technical solutions, the purification component also includes: a gas collection box, the air inlet end of the gas collection box is connected to the inside of the anti-backflow pipe through an air inlet pipe, and the air outlet end of the gas collection box is connected to the inside of the disinfection device through an air outlet pipe.

[0010] In some technical schemes, the purification component also includes: a power switching component, which is installed on the second support table, and is used to drive the first linkage gear to move up and down relative to the second support table; a passive linkage roller, a gear coaxial rotating member is provided between the input end of the passive linkage roller and the first linkage gear, and the output end of the passive linkage roller is connected to the active linkage roller through a transmission belt; a disinfection sliding member, the disinfection sliding member includes an advance and retreat rack installed on the disinfection device, and a disinfection gear transmission assembly is connected between the active linkage roller and the advance and retreat rack.

[0011] In some technical solutions, the power switching assembly includes: a first lifting device, on which is installed a rack and pinion assembly arranged in a vertical direction of the second supporting platform surface, and the linkage motor is connected to the first lifting device through the rack and pinion assembly.

[0012] In some technical schemes, the gear coaxial rotating member includes: a linkage protrusion, which is arranged at the end of the first linkage gear away from the first support table; and a linkage groove, which is arranged at the end of the passive linkage roller close to the first support table and corresponds to the shape of the linkage protrusion.

[0013] In some technical solutions, a sliding limit assembly is provided between the outer wall of the shelter and / or the inner wall of the shelter and the disinfection device.

[0014] In some technical solutions, a balance sensing device is installed on the anti-backflow component.

[0015] The embodiment of the present application provides an airtight door for a cabin for preventing air backflow, comprising an external structure component, an anti-backflow component and a linkage component, wherein the anti-backflow component comprises an anti-backflow pipe, an inlet and outlet pipe door and a second supporting table; the external structure component mainly plays an isolation role to separate wards or corridors; the linkage component is the main transmission mechanism, which is used to coordinate and control the working state of the anti-backflow component and the rotation angle and rotation position of the anti-backflow component; the anti-backflow component is the main component for preventing air backflow, which can prevent the air on both sides of the airtight door from circulating when personnel (users) pass through the airtight door of the cabin, thereby effectively reducing the spread of viruses in the cabin; in this way, under the joint action of the above-mentioned external structure component, the anti-backflow component and the linkage component, the present invention has a better effect in preventing the air on both sides of the airtight door of the cabin from flowing and exchanging, thereby making it difficult for the air in the ward with infectious viruses to flow back to the corridor of the cabin, thereby improving the safety performance of the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the airtight door of the cabin for preventing air backflow according to the present invention when viewed from one viewing angle;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the airtight door of the cabin for preventing air backflow according to the present invention from another viewing angle;

[0019] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0020] Figure 4 A schematic diagram of the structure of the airtight door of the cabin for preventing air backflow according to the present invention as viewed from above;

[0021] Figure 5 for Figure 4 A three-dimensional cross-sectional view of the middle BB;

[0022] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0023] Figure 7 for Figure 4 A three-dimensional cross-sectional view of the middle DD;

[0024] Figure 8 for Figure 7A partial enlarged view of point E in the middle;

[0025] Fig. 9 The figure is a schematic structural diagram of the anti-backflow assembly in the airtight door of the cabin for preventing air backflow according to the present invention.

[0026] In the figure: 1. External structure assembly; 101. Shelter outer wall; 102. Shelter inner wall; 103. Sealing frame; 104. Rotating connector; 105. Wall door; 106. Sealing door strip; 107. Handle; 108. Support bottom plate; 109. Through port; 2. Linkage assembly; 201. First support column; 202. First support table; 203. Second support column; 204. Second support table; 205. Sealing groove; 206. First lifting device; 207. Lifting gear; 208. Linkage motor; 209. Lifting rack; 210. First linkage gear; 211. Linkage protrusion; 212. Transformer; 213. Ventilation hole; 214. Second lifting device; 215. Lifting rod; 216. Control panel; 3. Backflow prevention assembly; 301. Backflow prevention pipe; 302. Inlet and outlet pipe door; 303. M Type sealing protrusion; 304, balance sensing device; 305, third support column; 306, linkage internal teeth; 307, tube slide; 308, ball; 309, sliding guide wheel; 4, purification component; 401, gas collection box; 402, first folding tube; 403, gas pipe; 404, second folding tube; 405, disinfection device; 406, guide slide bar; 407, disinfection device mounting rail; 408, passive linkage roller; 409, linkage groove; 410, transmission belt; 411, linkage bracket; 412, active linkage roller; 413, second linkage gear; 414, speed change gear; 415, advance and retreat rack; 416, sealing rubber plate; 417, disinfection nozzle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] In recent years, with the widespread popularity of square cabins, they have been widely used, and the airtight doors of square cabins have also attracted some attention.

[0029] At present, there is a kind of quick-assembled expandable medical shelter with a metal frame covered with an inflatable sealed airbag in the prior art. The invention includes a left shelter module, a right shelter module and any positive integer number of expansion shelter modules. The left shelter module, the right shelter module and the expansion shelter module are all provided with a square cage-shaped frame on the floor, and airbag layers are provided on both sides of the frame. The required side walls and top walls are formed by the frame and the airbag layer. The shelter structure with the metal frame covered with an overall inflatable sealed airbag has the advantages of good rigidity and light weight, and is easy to realize modular assembly, convenient for transportation and quick assembly on site.

[0030] There is also a marine stainless steel airtight sliding door in the prior art, comprising a hull, a slide rail groove and a movable door, wherein the hull is provided with a door opening, and the slide rail groove is provided with two, which are respectively located at the upper and lower ends of the door opening and fixed to the hull, and the two ends of the movable door are respectively slidably inserted between the two slide rail grooves, and the movable door comprises a door panel, and a mounting ring is fixedly installed on the surface of the door panel, and the mounting frame is in the shape of a square ring, and a mounting groove is provided in the mounting ring, and the mounting groove is in the shape of a square ring, and one end passes through the door panel, and a movable sealing device is installed in the mounting groove, and a limiting device and a switch assembly are installed on the door panel, and the limiting device is used to limit the movable sealing device, and the switch assembly is used to control the movement of the door panel.

[0031] During use, the airtight door in the above-mentioned prior art has a poor effect in preventing the air on both sides of the airtight door of the cabin from flowing and exchanging, thereby posing a risk of allowing the air in the ward with infectious viruses to flow back to the aisle of the cabin and then infect other wards. This poses a serious safety hazard, and therefore, it is necessary to make improvements.

[0032] In view of the above problems, the embodiments of the present application provide a cabin airtight door for preventing air backflow, which can solve the problem in the related art that the air in the wards with infectious viruses is easy to flow back to the cabin corridor and then infect other wards. It should be noted that if there is substantially the same result, the cabin airtight door of the present invention is not limited to the contents described in the following embodiments.

[0033] In actual operation, the airtight door of the cabin for preventing air backflow includes: an external structure component 1, the external structure component 1 includes a cabin outer wall 101 and a cabin inner wall 102 arranged at intervals from each other, and wall doors 105 are installed on the cabin outer wall 101 and the cabin inner wall 102; an anti-backflow component 3, the anti-backflow component 3 includes an anti-backflow pipe 301 rotatably installed between the cabin outer wall 101 and the cabin inner wall 102, an inlet and outlet pipe door 302 installed on the side wall of the anti-backflow pipe 301 and corresponding to the wall door 105, and a second support table 204 installed at the lower end of the anti-backflow pipe 301 and used for users to stand; a linkage component 2, the linkage component 2 is installed between the cabin outer wall 101 and the cabin inner wall 102 and used to drive the anti-backflow component 3 to rotate.

[0034] In actual operation, the outer structure component 1 includes a support base plate 108, a linkage component 2 is arranged above the support base plate 108, and the linkage component 2 includes a first support column 201, the bottom of the first support column 201 is in contact with the top of the support base plate 108, a first support table 202 is arranged above the first support column 201, a plurality of second support columns 203 are arranged on the first support table 202, and a second support table 204 is arranged above the second support column 203. The support base plate 108 is not only used to provide an installation position for other components (such as the backflow prevention component 3 and the linkage component 2), but also used to separate other components from the ground to prevent other components from directly contacting the ground, thereby further improving the safety performance of the present invention.

[0035] In actual operation, the backflow prevention pipe 301 presents a tubular structure. When a person (user) passes through the airtight door, he needs to first pass through the inlet and outlet pipe door 302 to enter the inside of the backflow prevention pipe 301 and stand on the second support table 204 inside the backflow prevention pipe 301. The backflow prevention component 3 is a component used to prevent air backflow when the user passes through the airtight door. It can ensure that the air on both sides of the airtight door will not circulate when the user passes through the airtight door, and can effectively prevent the spread of viruses in the cabin.

[0036] In the above technical solution, the linkage component 2 can drive the anti-backflow pipe 301 to rotate, so that the anti-backflow pipe 301 is in a suitable position, such as aligning the inlet and outlet pipe door 302 with the wall door 105 on the outer wall 101 of the cabin or aligning the outer wall 101 of the cabin with the wall door 105 on the inner wall 102 of the cabin, so as to facilitate personnel to enter and exit the ward; the second support table 204 allows personnel to stand on the anti-backflow pipe 301, so that personnel can smoothly pass through the outer wall 101 of the cabin, the anti-backflow pipe 301 and the inner wall 102 of the cabin in turn. 102, enter the ward; the inlet and outlet pipe door 302 and the two wall doors 105 are both double-protected closed structures. When a person enters the anti-backflow pipe 301 and stands on the second support table 204, the two wall doors 105 are in a closed state. The inlet and outlet pipe door 302 will only be opened when the person needs to enter and exit the cabin airtight door described in the present invention (that is, when the inlet and outlet pipe door 302 and one of the two wall doors 105 are in a connected state), so as to facilitate the person to enter and exit the ward.

[0037] In the above technical solution, since the inlet and outlet pipe door 302 is only opened when personnel need to enter and exit the airtight door of the cabin described in the present invention, and the inlet and outlet pipe door 302 is a built-in component on the anti-backflow pipe 301, the anti-backflow component 3 can prevent the air on both sides of the airtight door from circulating when personnel (users) pass through the airtight door of the cabin, thereby effectively reducing the spread of viruses in the cabin.

[0038] During actual operation, the backflow prevention component 3 is arranged on the supporting base plate 108, and an inlet and outlet pipe door 302 is provided on the backflow prevention pipe 301. The first supporting table surface 202 and the second supporting table surface 204 are located on the inner side of the backflow prevention pipe 301. An M-shaped sealing protrusion 303M is provided on the inner wall of the backflow prevention pipe 301. A sealing groove 205 is provided on the outer side of the second supporting table surface 204. The sealing groove 205 cooperates with the M-shaped sealing protrusion 303M. A plurality of balancing sensing devices 304 are provided at the bottom of the backflow prevention pipe 301. A tube body slide 307 is provided below the backflow prevention pipe 301. The bottom of the tube body slide 307 is in contact with the top of the supporting base plate 108, and a plurality of balls 308 are provided on the tube body slide 307.

[0039] In the above technical solution, the sealing groove 205 and the M-shaped sealing protrusion 303M have the same size and are interference fit, which can fully fill the gap between the second support table 204 and the inner wall of the anti-backflow tube 301 to ensure the air tightness inside the anti-backflow tube 301. The tube body slide 307 provides an installation position for the ball 308 and limits the rolling range of the ball 308 to prevent the ball 308 from disappearing without restraint.

[0040] The linkage component 2 includes: a first support table 202, on which a linkage motor 208 is arranged, and a first transmission component for driving the anti-backflow pipe 301 to rotate is connected between the output end of the linkage motor 208 and the anti-backflow pipe 301; a backflow pipe rotating part, which includes a ball 308 installed on the end of the first support table 202 away from the second support table 204, and a tube slide 307 installed between the outer wall 101 and the inner wall 102 of the cabin and used to place the ball 308.

[0041] In the above technical solution, the linkage assembly 2 can be arranged inside the anti-backflow pipe 301, and the second support table 204, the linkage motor 208 and the first support table 202 are arranged in sequence from top to bottom inside the anti-backflow pipe 301. The linkage motor 208 can drive the anti-backflow pipe 301 to rotate through the first transmission assembly, thereby driving the anti-backflow pipe 301 to rotate, and the ball 308 and the tube slide 307 can reduce the friction between the first support table 202 and the anti-backflow pipe 301, so that the first support table 202 can more conveniently drive the anti-backflow pipe 301 to rotate.

[0042] A plurality of third support columns 305 are provided at the bottom of the anti-backflow tube 301, and the plurality of third support columns 305 correspond to and are in vertical contact with the ball bearings 308 one by one. A plurality of sliding guide wheels 309 are provided on the upper inner side of the bottom of the anti-backflow tube 301, and the sliding guide wheels 309 are installed on the outer side of the first support table 202. The concave surface of the sliding guide wheel 309 is in contact with the outer side surface of the first support table 202. A linkage inner tooth 306 is provided on the inner side of the bottom of the anti-backflow tube 301, and the linkage inner tooth 306 can mesh with the first linkage gear 210 for transmission.

[0043] In the above technical solution, multiple third support columns 305 at the bottom of the anti-backflow tube 301 are respectively installed on the top, and each third support column 305 corresponds to the ball 308 one by one and is in vertical contact with it. When the anti-backflow tube 301 rotates relative to the supporting base plate 108, the ball 308 will roll in the tube slide 307, and the sliding friction at the bottom of the anti-backflow tube 301 will be converted into rolling friction, which greatly reduces the bottom wear of the anti-backflow tube 301 and extends the service life of the anti-backflow tube 301.

[0044] The first transmission assembly includes: a first linkage gear 210, which is arranged at the end of the first support table 202 away from the second support table 204; a linkage internal tooth 306, which is installed on the side wall of the anti-backflow pipe 301 through an annular inner plate; the middle of the first linkage gear 210 is connected to the output end of the linkage motor 208, and the outer edge of the first linkage gear 210 is meshed with the linkage internal tooth 306. In this way, the present invention also realizes the arrangement of the first transmission assembly, and under the action of the above-mentioned first transmission assembly, the linkage motor 208 can drive the anti-backflow pipe 301 to rotate through the first linkage gear 210 and the linkage internal tooth 306 in turn.

[0045] In the above technical solution, the outer structure component 1 is the main outer structure support component, which provides an installation position for other components and is also convenient for installing other components on the inside of the cabin. The linkage component 2 is the main transmission mechanism, which plays a role in coordinating and controlling other components. The first support column 201 provides an installation position for the first support table 202, and multiple second support columns 203 are evenly distributed on the first support table 202. The multiple second support columns 203 separate the first support table 202 from the second support table 204, so that the first support table 202 and the second support table 204 components can also have enough space to install other components.

[0046] A plurality of sliding guide wheels 309 on the upper inner side of the bottom of the anti-backflow tube 301 are installed on the outer side of the first support table 202, which limits the rotation range of the anti-backflow tube 301 so that the anti-backflow tube 301 can only rotate along the outer side of the first support table 202. The concave surface of the sliding guide wheel 309 contacts the outer side surface of the first support table 202 to avoid collision between the anti-backflow tube 301 and the outer periphery of the first support table 202, thereby reducing vibration during the operation of the airtight door.

[0047] At the same time, the linkage inner teeth 306 can mesh with the first linkage gear 210 for transmission. Therefore, when the linkage motor 208 drives the first linkage gear 210 to rotate, the anti-backflow pipe 301 will rotate relative to the supporting base plate 108 through meshing rotation, and the axes of the two are on the same line. When the user enters the inside of the cabin through the airtight door, the linkage motor 208 will rotate the anti-backflow pipe 301 180 degrees, so that the inlet and outlet pipe door 302 originally facing the outside of the cabin turns to face the inside of the cabin. At this time, since there is only one inlet and outlet pipe door 302, the air on both sides of the airtight door is not connected together during the rotation process, so air backflow is avoided, and the air inside the cabin is effectively prevented from flowing to the outside of the cabin through the airtight door.

[0048] The supporting bottom plate 108 is provided with a cabin outer wall 101 and a cabin inner wall 102 on both sides, and a through hole 109 is provided on the outer wall 101 and the inner wall 102 of the cabin. A rotating connector 104 is provided on the side of the through hole 109, and a wall door 105 is provided on the rotating connector 104. The wall door 105 is rotatably connected to the through hole 109 through the rotating connector 104. A sealing door strip 106 is provided on the inner side of the wall door 105. The outer size of the sealing door strip 106 is the same as the inner size of the through hole 109. A handle 107 is provided on the outer side of the wall door 105, and a sealing frame 103 is provided between the through hole 109 and the anti-backflow pipe 301.

[0049] During actual work, the double-layer wall structure of the outer wall 101 and the inner wall 102 of the cabin provides space for the user to move around. The user enters the anti-backflow pipe 301 from the through-port 109 of the outer wall 101 of the cabin through the inlet and outlet pipe door 302. After the anti-backflow pipe 301 rotates, the user enters the cabin from the through-port 109 of the inner wall 102 of the cabin through the inlet and outlet pipe door 302. The rotating connector 104 provides an installation position for the wall door 105, so that the wall door 105 can be rotatably connected to the through-port 109.

[0050] When the airtight door is not in use, the staff inside and outside the cabin can close the wall door 105 and seal the passage 109 to prevent other personnel from entering and exiting the cabin through the airtight door. The outer size of the sealing door strip 106 on the inner side of the wall door 105 is the same as the inner size of the passage 109, so it can fully fill the gap between the wall door 105 and the inner side of the passage 109, ensuring the sealing between the wall door 105 and the passage 109, and further improving the safety performance of the airtight door.

[0051] The handle 107 provides the user with a force point, so that the user can open and close the wall door 105 more conveniently and quickly. The sealing frame 103 can fill the gap between the anti-backflow pipe 301 and the inner side of the through-port 109, thereby ensuring the sealing between the anti-backflow pipe 301 and the through-port 109. Even when the anti-backflow pipe 301 is rotating, the sealing frame 103 can be tightly attached to the outer wall of the anti-backflow pipe 301, and the size of the sealing frame 103 is the same as that of the inlet and outlet pipe door 302. When the inlet and outlet pipe door 302 is aligned with the through-port 109, the sealing frame 103 can also fill the gap between the inlet and outlet pipe door 302 and the through-port 109, thereby achieving a complete seal.

[0052] During actual operation, the present invention also includes a purification component 4, which includes: a disinfection device 405, the air inlet end of the disinfection device 405 is connected to the inside of the anti-backflow pipe 301, and the air outlet end of the disinfection device 405 is equipped with a spray component that can spray disinfectant into the anti-backflow pipe 301.

[0053] In the above technical solution, the spray assembly can be a disinfection nozzle 417, which can flow back into the anti-backflow pipe 301 through some disinfection nozzles 417 after disinfection treatment, so as to ensure the air pressure balance inside the anti-backflow pipe. Preferably, some other disinfection nozzles 417 can also spray disinfectant to disinfect the anti-backflow pipe 301 to prevent some viruses from adhering to the inner wall of the anti-backflow pipe 301. In this way, the present invention can disinfect the anti-backflow pipe 301 through the disinfection device 405, thereby further improving the safety performance of the present invention.

[0054] In actual operation, the air inlet end of the gas collection box 401 is connected to the inside of the anti-backflow pipe 301 through the air inlet pipe, and the air outlet end of the gas collection box 401 is connected to the inside of the disinfection device 405 through the air outlet pipe. In this way, the present invention can suck the air in the anti-backflow pipe 301 into the disinfection device 405 through the gas collection box 401, so that the disinfection device 405 can disinfect the air originally in the anti-backflow pipe 301.

[0055] In actual operation, the purification assembly 4 is installed on the support base plate 108, and the purification assembly 4 includes a gas collection box 401, the bottom of the gas collection box 401 is in contact with the top of the first support table 202, and a vent hole 213 is provided on the second support table 204, and a first folded tube 402 is provided between the vent hole 213 and the gas collection box 401, and the vent hole 213 and the first folded tube 402 together constitute an air inlet pipeline. A gas delivery pipe 403 is provided below the gas collection box 401, and a second folded tube 404 is provided at the end of the gas delivery pipe 403, and the gas delivery pipe 403 and the second folded tube 404 together constitute an air outlet pipeline.

[0056] In the above technical scheme, the purification component 4 can disinfect the anti-backflow component 3 to prevent the virus contaminated on the inside of the anti-backflow component 3 from flowing to the outside of the cabin through the inlet and outlet pipe door 302. The gas collection box 401 is located between the first support table 202 and the second support table 204. The gas collection box 401 can absorb the air on the inside of the anti-backflow pipe 301. The air on the inside of the anti-backflow pipe 301 enters the inside of the gas collection box 401 through the vent 213 via the first folding pipe 402 (that is, the air inlet pipe). The gas pipe 403 can transport the air collected by the gas collection box 401 again, and finally transport it to the inside of the disinfection device 405 through the second folding pipe 404 (that is, the air outlet pipe). The disinfection device 405 can filter and disinfect the air. After the disinfection, the air flows back into the anti-backflow pipe 301 through some disinfection nozzles 417 to ensure air pressure balance.

[0057] Preferably, some other disinfection nozzles 417 can also spray disinfectant to disinfect the inside of the anti-backflow pipe 301 to prevent some viruses from adhering to the inner wall of the anti-backflow pipe 301. The installation rail of the disinfection device 405 provides an installation position for the disinfection device 405, so that the disinfection device 405 can slide back and forth, and the sealing rubber plate 416 can be embedded in the inlet and outlet pipe door 302, so that the airway on the disinfection device 405 and the anti-backflow pipe 301 form a closed environment, which is convenient for disinfection and sterilization.

[0058] The purification component 4 also includes: a power switching component, which is installed on the second support table 204, and is used to drive the first linkage gear 210 to move up and down relative to the second support table 204; a passive linkage roller 408, a gear coaxial rotating member is provided between the input end of the passive linkage roller 408 and the first linkage gear 210, and the output end of the passive linkage roller 408 is connected to the active linkage roller 412 through a transmission belt 410; a disinfection sliding member, which includes an advance and retreat rack 415 installed on the disinfection device 405, and a disinfection gear transmission assembly is connected between the active linkage roller 412 and the advance and retreat rack 415.

[0059] In actual operation, the disinfection gear transmission assembly includes a second linkage gear 413 and a speed gear 414, and the power switching assembly allows the linkage motor 208 (first linkage gear 210) to have two working positions and states:

[0060] The first working position and state is when the first linkage gear 210 and the linkage inner gear 306 are meshed, the linkage motor 208 drives the anti-backflow pipe 301 to rotate through the first linkage gear 210 and the linkage inner gear 306 in sequence, so as to facilitate the personnel to enter and exit the ward;

[0061] The second working position and state is that the first linkage gear 210 and the passive linkage roller 408 are connected together through a coaxial gear rotating member. At this time, the first linkage gear 210 and the passive linkage roller 408 are coaxial and connected to each other. At this time, the backflow prevention pipe 301 will not rotate, and the linkage motor 208 drives the disinfection device 405 to slide on the supporting bottom plate 108 through the first linkage gear 210, the passive linkage roller 408, the active linkage roller 412 and the disinfection gear transmission assembly and other components in turn, so that the disinfection device 405 can disinfect the backflow prevention pipe 301, thereby further improving the safety performance of the present invention.

[0062] The power switching assembly includes: a first lifting device 206, on which a gear rack assembly arranged in the vertical direction of the second support platform surface is installed, and a linkage motor 208 is connected to the first lifting device 206 through the gear rack assembly. In this way, the present invention also realizes the arrangement of the power switching assembly.

[0063] During actual operation, the gear rack assembly includes a lifting rack 209 and a lifting gear 207. The first lifting device 206 is installed on the first supporting table 202. The inner side of the first lifting device 206 is provided with a lifting gear 207 connected to the linkage motor 208. A linkage motor 208 is provided in the middle of the first lifting device 206. The linkage motor 208 is provided with a lifting rack 209. The lifting rack 209 is meshed with the lifting gear 207. A first linkage gear 210 is provided below the linkage motor 208. A transformer 212 is provided on the right side of the linkage motor 208.

[0064] When the user wants to enter or exit the cabin, the first lifting device 206 provides an installation position for the linkage motor 208. The lifting rack 209 on the linkage motor 208 can engage with the lifting gear 207 on the first lifting device 206, so that the first lifting device 206 can control the rotation of the lifting gear 207 to move the linkage motor 208 up and down. The transformer 212 can convert the power supply voltage connected to the outside into a voltage suitable for the airtight door, thereby ensuring the normal operation of the airtight door.

[0065] The gear coaxial rotating member includes: a linkage protrusion 211, which is arranged at the end of the first linkage gear 210 away from the first support table; and a linkage groove 409, which is arranged at the end of the passive linkage roller 408 close to the first support table and corresponds to the shape of the linkage protrusion 211. In this way, the present invention also realizes the arrangement of the gear coaxial rotating member, and can make the first linkage gear 210 and the passive linkage roller 408 coaxially connected into a whole according to needs.

[0066] A sliding limit assembly is provided between the outer wall 101 and / or the inner wall 102 of the shelter and the disinfection device 405. In the above technical solution, the sliding limit assembly includes a guide slide bar 406 and a mounting rail of the disinfection device 405, the guide slide bar 406 is installed on the disinfection device 405, and the guide slide bar 406 is provided on the outer wall 101 and / or the inner wall 102 of the shelter. In this way, under the action of the above sliding limit assembly, the present invention can more conveniently control the relative position between the disinfection device 405 and the anti-backflow pipe 301.

[0067] During actual operation, the disinfection device 405 is installed on the supporting base plate 108. The disinfection device 405 is located between the outer wall 101 and the inner wall 102 of the cabin. The second folding tube 404 is connected to the disinfection device 405. A disinfection device 405 mounting rail is provided on the supporting base plate 108. Guide slide bars 406 are provided on both sides of the disinfection device 405. The guide slide bars 406 are installed on the disinfection device 405 mounting rail. The disinfection device 405 is slidably connected to the disinfection device 405 mounting rail through the guide slide bars 406. A sealing rubber plate 416 is provided at the front end of the disinfection device 405. The size of the sealing rubber plate 416 is the same as the size of the inlet and outlet pipe door 302. A disinfection nozzle 417 is provided on the sealing rubber plate 416.

[0068] The backflow prevention assembly 3 is provided with a balance sensing device 304. In the above technical solution, there are multiple balance sensing devices 304 installed at the bottom of the annular inner plate. Thus, with the help of the balance sensing device 304, the present invention can easily know whether there is a person in the backflow prevention pipe 301.

[0069] During actual operation, the passive linkage roller 408 is rotatably mounted on the supporting base plate 108, a linkage groove 409 is provided on the passive linkage roller 408, a linkage protrusion 211 is provided at the bottom of the first linkage gear 210, and the linkage protrusion 211 can be installed in the linkage groove 409, a linkage bracket 411 is provided at the bottom of the disinfection device 405, an active linkage roller 412 is provided on the linkage bracket 411, a transmission belt 410 is provided between the active linkage roller 412 and the passive linkage roller 408, a second linkage gear 413 is provided above the active linkage roller 412, a speed change gear 414 is provided on the linkage bracket 411, and the speed change gear 414 is meshed with the second linkage gear 413, and an advance and retreat rack 415 is provided at the bottom of the disinfection device 405, and the advance and retreat rack 415 is meshed with the speed change gear 414.

[0070] During actual operation, the linkage groove 409 on the passive linkage roller 408 can cooperate with the linkage protrusion 211 at the bottom of the first linkage gear 210. When the first lifting device 206 controls the linkage motor 208 to descend, the first linkage gear 210 and the linkage internal tooth 306 are disengaged, and the backflow prevention pipe 301 can no longer rotate. When the linkage protrusion 211 is embedded in the linkage groove 409, the linkage motor 208 is connected to the passive linkage roller 408, and when the linkage motor 208 rotates, it can drive the passive linkage roller 408 to rotate.

[0071] The linkage bracket 411 provides installation positions for multiple components. The transmission belt 410 connects the passive linkage roller 408 and the active linkage roller 412 together, so that the passive linkage roller 408 can drive the active linkage roller 412 to rotate. The second linkage gear 413 is meshed with the speed gear 414, and the speed gear 414 is meshed with the advance and retreat rack 415.

[0072] Therefore, when the linkage motor 208 rotates, it can drive the disinfection device 405 forward or backward along the installation rail of the disinfection device 405. When the anti-backflow pipe 301 needs to be disinfected, the disinfection device 405 can be controlled to move toward the direction of the anti-backflow pipe 301, so that the sealing rubber plate 416 is embedded in the inlet and outlet pipe door 302, and then disinfection is performed.

[0073] Preferably, a second lifting device 214 is provided on the second support table 204, a lifting rod 215 is provided on the second lifting device 214, and a control panel 216 is provided on the lifting rod 215. The second support table 204 provides an installation position for the second lifting device 214, and the second lifting device 214 can control the lifting rod 215 to move up and down, so that the control panel 216 can reach a height suitable for the user, which is convenient for the user to operate the control panel 216. The user can fully control various functions of the airtight door through the control panel 216, and the airtight door also needs to operate the linkage motor 208 on the control panel 216 to control the rotation of the anti-backflow pipe 301.

[0074] In actual operation, the present invention also discloses a method for using the above-mentioned shelter airtight door, which includes the following steps:

[0075] S1. Entering the quarantine center:

[0076] The user first opens the wall door 105. At this time, the inlet and outlet door 302 overlaps with the through hole 109 on the outer wall 101 of the cabin. The user enters the inner side of the anti-backflow pipe 301 through the through hole 109 and the inlet and outlet door 302, stands on the second support table 204, and then (through the control panel 216) starts the linkage motor 208 to work. The linkage motor 208 drives the first linkage gear 210 to rotate. Since the first linkage gear 210 is engaged with the linkage inner gear 306, the anti-backflow pipe 301 starts to rotate. The rotation angle is 180 degrees, so that the inlet and outlet door 302 overlaps with the through hole 109 on the inner wall 102 of the cabin. Then the user enters the inner side of the cabin (ward) through the inlet and outlet door 302 and the through hole 109.

[0077] S2. Self-disinfection of airtight door:

[0078] First, after the balance sensing device 304 senses that the user has walked out of the anti-backflow pipe 301, the linkage motor 208 continues to work, driving the anti-backflow pipe 301 to rotate at a rotation angle of 90 degrees, so that the inlet and outlet pipe door 302 is facing the direction of the disinfection device 405 (sealing rubber plate 416), and then the first lifting device 206 is started, and through the second position and working state of the disinfection gear transmission assembly, the first linkage gear 210 is disengaged from the linkage internal gear 306, and at this time, the anti-backflow pipe 301 can no longer rotate;

[0079] Next, when the linkage protrusion 211 is embedded in the linkage groove 409, the linkage motor 208 is connected to the passive linkage roller 408. When the linkage motor 208 rotates, it can drive the passive linkage roller 408 to rotate. The linkage bracket 411 provides installation positions for multiple components. The transmission belt 410 connects the passive linkage roller 408 with the active linkage roller 412, so that the passive linkage roller 408 can drive the active linkage roller 412 to rotate. The second linkage gear 413 is meshed with the speed gear 414, and the speed gear 414 is meshed with the advance and retreat rack 415.

[0080] Then, the linkage motor 208 rotates again, driving the disinfection device 405 to move along the installation rail of the disinfection device 405 toward the direction of the anti-backflow pipe 301, so that the sealing rubber plate 416 is embedded in the inlet and outlet pipe door 302, and then the gas collection box 401 absorbs the air inside the anti-backflow pipe 301, and transports the air to the inside of the disinfection device 405. The disinfection device 405 can filter and disinfect the air. After the disinfection, the air flows back into the anti-backflow pipe 301 through some disinfection nozzles 417 to ensure air pressure balance.

[0081] Finally, preferably, some other disinfection nozzles 417 can also spray disinfectant to disinfect the inside of the anti-backflow pipe 301 to prevent some viruses from adhering to the inner wall of the anti-backflow pipe 301.

[0082] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0083] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0084] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A cabin airtight door for preventing air backflow, characterized in that: It includes: An external structure assembly (1), the external structure assembly (1) comprising a cabin outer wall (101) and a cabin inner wall (102) arranged at intervals from each other, and wall doors (105) are installed on both the cabin outer wall (101) and the cabin inner wall (102); An anti-backflow assembly (3), the anti-backflow assembly (3) comprising an anti-backflow pipe (301) rotatably mounted between the outer wall (101) and the inner wall (102) of the cabin, an inlet and outlet pipe door (302) mounted on the side wall of the anti-backflow pipe (301) and corresponding to the wall door (105), and a second support table (204) mounted at the lower end of the interior of the anti-backflow pipe (301) and used for a user to stand on; A linkage assembly (2), the linkage assembly (2) being installed between the outer wall (101) and the inner wall (102) of the shelter and used to drive the backflow prevention assembly (3) to rotate; The linkage component (2) comprises: a first supporting table (202), wherein a linkage motor (208) is disposed on the first supporting table (202), and a first transmission assembly for driving the backflow prevention tube (301) to rotate is connected between an output end of the linkage motor (208) and the backflow prevention tube (301); A backflow pipe rotating member, the backflow pipe rotating member comprising a ball (308) mounted on an end of the first support surface (202) away from the second support surface (204), and a pipe slideway (307) mounted between the outer wall (101) and the inner wall (102) of the cabin and used for accommodating the ball (308); The power switching components include: a first lifting device (206), wherein a rack and pinion assembly arranged in a vertical direction of the second support table (204) is installed on the first lifting device (206), and the linkage motor (208) is connected to the first lifting device (206) via the rack and pinion assembly; The first transmission assembly comprises a first linkage gear (210); The coaxial rotating parts of the gear include: A linkage protrusion (211), wherein the linkage protrusion (211) is arranged at an end of the first linkage gear (210) away from the first supporting table surface (202).

2. The airtight door for preventing air backflow in a shelter as claimed in claim 1, characterized in that: The first transmission assembly comprises: The first linkage gear (210) is arranged on an end of the first support surface (202) away from the second support surface (204); Linked internal teeth (306), the linked internal teeth (306) being mounted on the side wall of the backflow prevention pipe (301) via an annular inner plate; The middle portion of the first linkage gear (210) is connected to the output end of the linkage motor (208), and the outer edge of the first linkage gear (210) is meshed with the linkage inner teeth (306).

3. The airtight door for preventing air backflow in a shelter as claimed in claim 2, characterized in that: It also includes a purification component (4), wherein the purification component (4) includes: A disinfection device (405), wherein the air inlet end of the disinfection device (405) is connected to the interior of the backflow prevention pipe (301), and the air outlet end of the disinfection device (405) is provided with a spray assembly capable of spraying disinfectant into the interior of the backflow prevention pipe (301).

4. The airtight door for preventing air backflow in a shelter as claimed in claim 3, characterized in that: The purification component (4) further comprises: A gas collection box (401), wherein the air inlet end of the gas collection box (401) is connected to the interior of the anti-backflow pipe (301) through an air inlet pipe, and the air outlet end of the gas collection box (401) is connected to the interior of the disinfection device (405) through an air outlet pipe.

5. The airtight door for preventing air backflow in a shelter as claimed in claim 3, characterized in that: The purification component (4) further comprises: a power switching assembly, the power switching assembly being mounted on the second support table (204), the power switching assembly being used to drive the first linkage gear (210) to perform lifting movement relative to the second support table (204); A passive linkage roller (408), wherein a gear coaxial rotating member is provided between the input end of the passive linkage roller (408) and the first linkage gear (210), and the output end of the passive linkage roller (408) is connected to the active linkage roller (412) via a transmission belt (410); A disinfection sliding member, the disinfection sliding member comprising an advance and retreat rack (415) mounted on the disinfection device (405), a disinfection gear transmission assembly being connected between the active linkage roller (412) and the advance and retreat rack (415).

6. The airtight door for preventing air backflow in a shelter as claimed in claim 5, characterized in that: The gear coaxial rotating member also includes: A linkage groove (409), the linkage groove (409) being arranged at one end of the passive linkage roller (408) close to the first support table surface (202) and corresponding to the shape of the linkage protrusion (211).

7. The airtight door for preventing air backflow in a shelter as claimed in claim 6, characterized in that: A sliding limit assembly is provided between the outer wall (101) and / or the inner wall (102) of the shelter and the disinfection device (405).

8. The airtight door for preventing air backflow in a shelter as claimed in claim 7, characterized in that: A balance sensing device (304) is installed on the backflow prevention component (3).

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