Automatic sealing type air supply and exhaust structure for independent ventilation cage

Abstract

The invention relates to the field of cultivation, in particular to an automatic closed type air supply and exhaust structure for an independent ventilation cage, which comprises a movable support and the independent ventilation cage, the automatic closed type air supply and exhaust structure comprises a pipe group and a communication mechanism, the independent ventilation cage is positioned in the movable support, and the independent ventilation cage is communicated with the pipe group through the communication mechanism; the communication mechanism comprises a butt joint assembly rotationally installed on the independent ventilation cage, a fixing assembly is in threaded connection with the interior of the butt joint assembly, a plugging assembly is arranged between the butt joint assembly and the fixing assembly, and a trigger assembly and a movable assembly are arranged between the plugging assembly and the fixing assembly. According to the technical scheme, when the communication mechanism is not matched with the independent ventilation cage, the blocking assembly blocks the exhaust branch pipe and the air inlet branch pipe, so that air in the exhaust branch pipe and the air inlet branch pipe cannot make contact with external air, the air volume and air pressure of the cage box at the normal position are guaranteed, and stable operation of the independent ventilation cage is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the field of breeding, in particular to an automatic closed air supply and exhaust structure for an independent ventilation cage. Background Art

[0002] Independent ventilation cages (abbreviated as "IVC") are equipment used to raise SPF-level experimental animals and are one of the core equipment in the barrier area of ​​the experimental animal breeding center. They can provide high-clean air (ISO 5), sufficient ventilation times (20-80 times / h) and appropriate cage pressure difference (-10~10Pa) for SPF-level rats, mice, guinea pigs and other experimental animals, ensuring that SPF-level experimental animals are not affected by external dust, microorganisms and aerosols. The independent ventilation cage consists of a main unit, a cage frame, a cage box and installation accessories. The cage frame connects the main unit and the cage box to supply and exhaust air, ensuring that the clean air filtered by the main unit is sent into the cage box, and the ammonia and other odorous gases generated in the cage box are discharged to the outside through the main unit.

[0003] The existing cage air supply and exhaust structure designs of manufacturers are mostly open straight-through designs, that is, the cage air supply and exhaust nozzles are fully through-type, and both ends can be directly connected to the cage box through the air nozzle holes. When the cage box is placed on the cage, the air inlet end of the cage exhausts air into the cage, and the gas inside the cage is discharged into the exhaust end of the cage and exported through the exhaust end of the cage. When the cage is removed, the air nozzle is placed in the air, and the air inside the cage is connected to the outside air, which makes it easy for the microorganisms inside the cage to enter the indoor air, thereby polluting the indoor environment. Based on this, we designed an automatic closed air supply and exhaust structure for independent ventilation cages. Summary of the invention

[0004] The present invention is proposed in view of the problem that the automatic closed air supply and exhaust structure for independent ventilation cages in the above or prior art easily causes the gas inside the cage to communicate with the indoor air, which may cause the indoor air to be contaminated by microorganisms.

[0005] Therefore, an object of the present invention is to provide an automatic closed air supply and exhaust structure for an independent ventilation cage.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic closed air supply and exhaust structure for an independent ventilation cage, comprising a movable bracket and an independent ventilation cage, the automatic closed air supply and exhaust structure comprising a pipe group and a connecting mechanism, the independent ventilation cage is located inside the movable bracket, and the independent ventilation cage and the pipe group are connected through the connecting mechanism; the connecting mechanism comprises a docking assembly rotatably mounted on the independent ventilation cage, a fixing assembly is connected to the internal thread of the docking assembly, a blocking assembly is provided between the docking assembly and the fixing assembly, and a trigger assembly and a movable assembly are provided between the blocking assembly and the fixing assembly; The blocking component includes a slide tube located inside the fixed component, a placement groove is provided at the closed end of the slide tube, a sealing ring is placed inside the placement groove, a plurality of air leakage holes are provided on the circumference of the slide tube, a guide cone is fixedly installed inside the slide tube, a fixing ring is fixedly installed on the outer wall of the slide tube, and the fixing ring is connected to the fixed component through a first spring.

[0007] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the opening end of the slide cylinder is conical, the cross-section of the air leakage hole is rectangular, and the fixing ring is located inside the fixing component and is slidably connected to the fixing component.

[0008] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the pipe group includes an air intake main pipe and an exhaust main pipe fixedly connected to the upper and lower ends of the movable bracket, and the air intake main pipe and the exhaust main pipe are respectively fixedly connected with an air intake branch pipe and an exhaust branch pipe, and the air intake branch pipe and the exhaust branch pipe are evenly provided with multiple fixed components.

[0009] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the ends of the air intake branch pipe and the exhaust branch pipe away from the connection are both closed, and the cross-sections of the air intake branch pipe and the exhaust branch pipe are both flat.

[0010] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the docking assembly includes a mounting cover rotatably connected to the independent ventilation cage, a docking tube is fixedly connected to the inner wall of the mounting cover, the inner wall of the docking tube is "V"-shaped, and the docking tube is adapted to the slide cylinder.

[0011] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the fixed component includes a connecting ring fixedly connected to the air intake branch pipe or the exhaust branch pipe, the other end of the connecting ring is fixedly connected to a connecting cover, a sealing gasket is placed on one end of the connecting cover close to the connecting ring, a side groove is provided on the inner wall of the connecting cover corresponding to the sealing ring, a guide groove is provided on the outer wall of the opening end of the connecting cover, and a spring groove is provided on the inner wall of the connecting cover.

[0012] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the connecting ring and the connecting cover are cast as one piece, the sealing ring is located inside the connecting ring, the cross-section of the connecting cover is circular, and the cross-section of the side groove is arc-shaped.

[0013] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, wherein: the trigger component includes an inner groove provided on the inner wall of the connecting cover, the inner wall of the inner groove is fixedly connected with a blocking column through a second spring, and the blocking column is respectively provided with a resistance surface at one end away from the second spring; the movable component includes a bottom groove provided on the air leakage hole, the inner wall of the bottom groove is slidably connected with a sealing plate, a rope groove is provided at the bottom of the sealing plate, an elastic rope is fixedly connected between the inner wall of the rope groove and the bottom groove, the end of the sealing plate away from the elastic rope is fixedly connected with a resistance plate, the resistance plate is provided with an extrusion surface corresponding to the resistance surface, the inner wall of the sealing plate is fitted with a limiting plate, and the limiting plate is fixedly connected to the air leakage hole.

[0014] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the inner groove is slidably connected to the barrier column, and the two ends of the second spring are fixedly connected to the barrier column and the inner groove respectively.

[0015] As a preferred solution of the automatic closed air supply and exhaust structure for an independent ventilation cage of the present invention, the outer wall of the sealing plate is in contact with the inner wall of the air leakage hole, the elastic rope is woven from elastic fibers, and the cross-section of the resistance plate is arc-shaped.

[0016] The beneficial effects of the automatic sealed air supply and exhaust structure for an independent ventilation cage of the present invention are as follows: in the technical solution, when the connecting mechanism is not adapted to the independent ventilation cage, the blocking component blocks the exhaust branch pipe and the air intake branch pipe, so that the gas inside cannot contact the outside air, thereby ensuring the air volume and air pressure of the cage box in the normal position, and effectively ensuring the stable operation of the independent ventilation cage; The setting of the trigger component and the movable component in the device can block the air leakage hole, which can avoid air leakage when the independent ventilation cage is connected to the pipe group. The setting of the guide cone can guide the gas entering from the air leakage hole. The device can effectively avoid the connection between the air inside the pipe group and the external air, ensuring that the air inside the room is not polluted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the movable bracket and pipe group structure of the automatic closed air supply and exhaust structure for an independent ventilation cage.

[0019] Figure 2 This is a schematic diagram of the pipe group structure of the automatic closed air supply and exhaust structure for an independent ventilation cage.

[0020] Figure 3 The schematic diagram of the structure of the pipe group of the automatic closed air supply and exhaust structure for the independent ventilation cage and the independent ventilation cage.

[0021] Figure 4 The figure is a schematic diagram of the connecting mechanism structure of the automatic closed air supply and exhaust structure for an independent ventilation cage.

[0022] Figure 5 The present invention is a cross-sectional view of the connecting mechanism of the automatic closed air supply and exhaust structure for an independent ventilation cage.

[0023] Figure 6 The figure is a schematic diagram of the internal structure of the connecting mechanism of the automatic closed air supply and exhaust structure for an independent ventilation cage.

[0024] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0025] Figure 8 This is a schematic diagram of the interior of the connecting mechanism of the automatic closed air supply and exhaust structure for an independent ventilation cage from another perspective.

[0026] Fig. 9 for Figure 8 Enlarged view of point B in the middle.

[0027] Fig.10 The schematic diagram of the trigger component and active component structure of the automatic closed air supply and exhaust structure for an independent ventilation cage.

[0028] In the figure: 1, movable bracket; 2, independent ventilation cage; 3, pipe group; 30, intake main pipe; 31, exhaust main pipe; 33, intake branch pipe; 34, exhaust branch pipe; 4, connecting mechanism; 40, docking assembly; 41, fixing assembly; 42, blocking assembly; 43, trigger assembly; 44, movable assembly; 400, installation cover; 401, docking pipe; 410, connecting ring; 411, connecting cover; 412, sealing gasket; 413, side groove; 414, Guide groove; 415, spring groove; 420, slide; 421, placement groove; 422, sealing ring; 423, vent hole; 424, guide cone; 425, fixing ring; 426, first spring; 430, inner groove; 431, second spring; 432, blocking column; 433, resistance surface; 440, bottom groove; 441, sealing plate; 442, rope groove; 443, elastic rope; 444, resistance plate; 445, extrusion surface; 446, limit plate. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figure 1 to Figure 7 , which is the first embodiment of the present invention, and provides an automatic closed air supply and exhaust structure for an independent ventilation cage 2, which can achieve the air supply and exhaust effect of the independent ventilation cage 2. The automatic closed air supply and exhaust structure for the independent ventilation cage 2 includes a movable bracket 1 and the independent ventilation cage 2. The automatic closed air supply and exhaust structure includes a pipe group 3 and a connecting mechanism 4. The independent ventilation cage 2 is located inside the movable bracket 1, and the independent ventilation cage 2 and the pipe group 3 are connected through the connecting mechanism 4.

[0031] Among them, during the assembly process of the device, the independent ventilation cage 2 is installed on the movable bracket 1, and the independent ventilation cage 2 is connected to the tube group 3. The air inlet end and the exhaust end of the independent ventilation cage 2 are connected to the connecting mechanism 4. The external air enters the independent ventilation cage 2 through the air inlet channel in the tube group 3. The air inside the independent ventilation cage 2 is discharged through the exhaust channel in the tube group 3 under the action of air pressure, thereby realizing the replacement of the air inside the independent ventilation cage 2 and ensuring the cleanliness of the air inside it. The movable bracket 1 can arrange multiple independent ventilation cages 2 in an array on one side of the tube group 3.

[0032] The connecting mechanism 4 includes a docking assembly 40 rotatably mounted on the independent ventilation cage 2, the docking assembly 40 is internally threadedly connected to a fixing assembly 41, a blocking assembly 42 is provided between the docking assembly 40 and the fixing assembly 41, and a trigger assembly 43 and a movable assembly 44 are provided between the blocking assembly 42 and the fixing assembly 41.

[0033] Specifically, the air inlet and exhaust ends of the independent ventilation cage 2 are rotatably installed with a docking assembly 40, which is connected to the tube group 3 and the fixed assembly 41. The setting of the docking assembly 40 and the fixed assembly 41 can connect the independent ventilation cage 2 with the tube group 3. The setting of the sealing assembly 42 can seal the fixed assembly 41 so that it is in a closed state when separated from the docking assembly 40. The closed state can ensure that the air pressure inside the tube group 3 is stable, and prevent external pollutants from entering the tube group 3 through the fixed assembly 41, thereby maintaining the stable operation of the independent ventilation cage 2.

[0034] The plugging assembly 42 includes a slide 420 located inside the fixed assembly 41, a placement groove 421 is provided at the closed end of the slide 420, a sealing ring 422 is placed inside the placement groove 421, a plurality of air leakage holes 423 are provided around the slide 420, a guide cone 424 is fixedly installed inside the slide 420, a fixing ring 425 is fixedly installed on the outer wall of the slide 420, and the fixing ring 425 is connected to the fixed assembly 41 through a first spring 426. The open end of the slide 420 is conical, the cross section of the air leakage hole 423 is rectangular, and the fixing ring 425 is located inside the fixed assembly 41 and is slidably connected to the fixed assembly 41.

[0035] Furthermore, the cross section of the slide 420 is circular, and the end of the placement groove 421 close to the air leakage hole 423 is arc-shaped, which can better adapt to the sealing ring 422. The setting of the air leakage hole 423 can connect the tube group 3 with the interior of the fixing component 41. When the tube group 3 is connected with the interior of the fixing component 41, the tube group 3 is connected to the independent ventilation cage 2 through the fixing component 41 and the docking component 40. The setting of the trigger component 43 and the movable component 44 can block the air leakage hole 423 to avoid the connection between the tube group 3 and the independent ventilation cage 2. The air leakage hole 423 moves out of the fixing component 41 and is located inside the tube group 3 to connect. The air leakage hole 423 enters slowly when entering the interior of the tube group 3. When the air leakage hole 423 just enters the tube group 3 When the air leakage hole 423 is blocked, the trigger component 43 blocks the movable component 44 when the air leakage hole 423 enters the tube group 3. When the air leakage hole 423 enters the tube group 3, the gas inside the tube group 3 enters the slide cylinder 420. At this time, the fixed component 41 and the docking component 40 are not completely merged, and air leakage is likely to occur. The trigger component 43 and the movable component 44 block the air leakage hole 423, so that when the air leakage hole 423 enters the tube group 3, the trigger component 43 blocks the movable component 44, so that the air leakage hole 423 is continuously blocked. After the air leakage hole 423 enters the tube group 3 for a certain length, the trigger component 43 cancels the limit on the movable component 44. At this time, the movable component 44 is reset, driving the air leakage hole 423 to be directly exposed to the inside of the tube group 3. Because the air leakage hole 423 is already located at a certain distance inside the tube group 3, the fixed component 41 and the docking component 40 are now tightly merged, which can effectively avoid the occurrence of air leakage.

[0036] In summary, the setting of the trigger component 43 and the movable component 44 in the device can block the air leakage hole 423, thereby avoiding air leakage when the independent ventilation cage 2 is connected to the tube group 3. The setting of the guide cone 424 can guide the gas entering from the air leakage hole 423 to reduce the mutual impact between the entering gases. The blocking component 42 can effectively avoid the connection between the air inside the tube group 3 and the external air, thereby preventing the external air from being polluted.

[0037] Example 2, reference Figures 1 to 10 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a pipe group 3 and a connecting mechanism 4, which solves the blocking problem of the pipe group 3 when the independent ventilation cage 2 is not installed. It includes the pipe group 3 and the connecting mechanism 4. The pipe group 3 includes an intake manifold 30 and an exhaust manifold 31 fixedly connected to the upper and lower ends of the movable bracket 1. The intake manifold 30 and the exhaust manifold 31 are respectively fixedly connected with an intake branch pipe 33 and an exhaust branch pipe 34. The intake branch pipe 33 and the exhaust branch pipe 34 are evenly provided with a plurality of fixing components 41. The ends of the intake branch pipe 33 and the exhaust branch pipe 34 away from the connection are both closed, and the cross-sections of the intake branch pipe 33 and the exhaust branch pipe 34 are both flat.

[0038] Among them, the air intake main pipe 30 is located above the movable bracket 1, and a plurality of air intake branch pipes 33 are arranged at the bottom thereof. The air intake main pipe 30 is located at the top to prevent accumulated impurities in the air intake branch pipe 33 from falling into the main pipe, thereby ensuring the internal cleanliness of the air intake main pipe 30. The exhaust main pipe 31 is located at the bottom of the exhaust branch pipe 34. When the exhaust gas generated in the independent ventilation cage 2 passes through the exhaust branch pipe 34, some impurities will adhere to the inner wall of the pipe. The exhaust main pipe 31 located at the bottom can effectively collect the fallen objects on the pipe wall, which is convenient for subsequent pipeline maintenance and prevents the adhesion from clogging the exhaust branch pipe 34. The ends of the air intake branch pipe 33 and the exhaust branch pipe 34 away from the connection are both closed, which can stabilize the overall air pressure inside the pipe group 3 and ensure stable air intake and exhaust of the independent ventilation cage 2.

[0039] The docking assembly 40 includes a mounting cover 400 rotatably connected to the independent ventilation cage 2, and a docking tube 401 is fixedly connected to the inner wall of the mounting cover 400. The inner wall of the docking tube 401 is "V"-shaped. The "V" shape increases the contact area relative to the plane and improves the sealing. The docking tube 401 is adapted to the slide cylinder 420.

[0040] Furthermore, the mounting cover 400 is located at the air inlet end and the air outlet end of the independent ventilation cage 2 , and the setting of the butt-joint pipe 401 can effectively fit with the end of the slide cylinder 420 , thereby ensuring the airtightness between the butt-joint pipe 401 and the slide cylinder 420 .

[0041] The fixing assembly 41 includes a connecting ring 410 fixedly connected to the intake branch pipe 33 or the exhaust branch pipe 34, and the other end of the connecting ring 410 is fixedly connected to a connecting cover 411, and a sealing gasket 412 is placed on the end of the connecting cover 411 close to the connecting ring 410. The inner wall of the connecting cover 411 is provided with a side groove 413 corresponding to the sealing ring 422, the outer wall of the opening end of the connecting cover 411 is provided with a guide groove 414, and the inner wall of the connecting cover 411 is provided with a spring groove 415. The connecting ring 410 and the connecting cover 411 are integrally cast, the sealing ring 422 is located inside the connecting ring 410, the cross section of the connecting cover 411 is circular, and the cross section of the side groove 413 is arc-shaped.

[0042] Furthermore, the setting of the connecting ring 410 can effectively fix the connecting cover 411 on the pipe group 3. The connecting cover 411 and the connecting ring 410 are both made of metal. The number of the intake branch pipes 33 or the exhaust branch pipes 34 is multiple, and the intake branch pipes 33 or the exhaust branch pipes 34 are staggered. The sealing gasket 412 is made of rubber. The setting of the sealing gasket 412 can improve the sealing between the pipe group 3 and the connecting cover 411. The arc-shaped setting of the side groove 413 can better match the sealing ring 422. The guide groove 414 can limit the connecting cover 411 when installing the installation cover 400, and straighten the connecting cover 411 so that the connecting cover 411 can smoothly enter the interior of the installation cover 400. The setting of the spring groove 415 can limit the first spring 426 located therein. When the first spring 426 is squeezed by the fixing ring 425, it will shrink. The setting of the spring groove 415 can prevent the first spring 426 from being damaged due to excessive shrinkage.

[0043] The rest of the structure is the same as that of Example 1.

[0044] In summary, the independent ventilation cage 2 is connected to the air intake branch pipe 33 and the exhaust branch pipe 34 in the pipe group 3 through the connecting mechanism 4, the gas in the air intake branch pipe 33 enters the independent ventilation cage 2 through the connecting mechanism 4, and the exhaust gas in the independent ventilation cage 2 is discharged through the exhaust branch pipe 34, thereby realizing the stable operation of the independent ventilation cage 2. When the connecting mechanism 4 is not adapted to the independent ventilation cage 2, the sealing component 42 seals the exhaust branch pipe 34 and the air intake branch pipe 33, so that the gas inside them cannot contact the external air.

[0045] Example 3, reference Figures 1 to 10 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a trigger component 43 and a movable component 44 for the automatic closed air supply and exhaust structure of the independent ventilation cage 2, which avoids the problem of air leakage when the independent ventilation cage 2 is connected to the pipe group 3. It includes a trigger component 43 and a movable component 44. The trigger component 43 includes an inner groove 430 opened on the inner wall of the connecting cover 411. The inner wall of the inner groove 430 is fixedly connected with a blocking column 432 through a second spring 431. The end of the blocking column 432 away from the second spring 431 is respectively provided with The movable component 44 includes a bottom groove 440 provided on the air leakage hole 423, the inner wall of the bottom groove 440 is slidably connected with a sealing plate 441, a rope groove 442 is provided at the bottom of the sealing plate 441, an elastic rope 443 is fixedly connected between the inner wall of the rope groove 442 and the bottom groove 440, and a resistance plate 444 is fixedly connected to one end of the sealing plate 441 away from the elastic rope 443, and an extrusion surface 445 is provided on the resistance plate 444 corresponding to the resistance surface 433, and a limiting plate 446 is fitted on the inner wall of the sealing plate 441, and the limiting plate 446 is fixedly connected to the air leakage hole 423.

[0046] Among them, the inner groove 430 is slidably connected to the blocking column 432 without rotating. The setting of the inner groove 430 can effectively accommodate the blocking column 432 and the second spring 431. When the contact plate 444 moves, the extrusion surface 445 contacts the contact surface 433 on the blocking column 432. Because their cross-sections are all inclined, they can effectively conflict with each other. When the extrusion surface 445 applies pressure to the contact surface 433, the two come into contact, and the contact surface 433 generates a reaction force on the extrusion surface 445. When the pressure applied by the extrusion surface 445 continues to increase, the extrusion surface 445 drives the contact surface 433 to generate a component force in the inner groove 430, and the component force drives the blocking column 432 to retract into the inner groove 430. The setting of the elastic rope 443 can drive the contact plate 444 to reset. When the contact plate 444 moves, it will drive the elastic rope 443 to stretch and accumulate elastic potential energy, thereby driving the contact plate 444 to reset.

[0047] The inner groove 430 is slidably connected to the barrier column 432, and the two ends of the second spring 431 are respectively fixedly connected to the barrier column 432 and the inner groove 430. The outer wall of the sealing plate 441 fits the inner wall of the air leakage hole 423, the elastic rope 443 is woven from elastic fibers, and the cross section of the contact plate 444 is arc-shaped.

[0048] The rest of the structure is the same as that of Example 2.

[0049] During operation, the independent ventilation cage 2 is placed on the movable bracket 1 and the independent ventilation cage 2 is moved so that the mounting cover 400 on one side is inserted into the connecting cover 411. When the docking tube 401 contacts the slide cylinder 420, the mounting cover 400 continues to be pushed to move, and the mounting cover 400 squeezes the slide cylinder 420. The movement of the slide cylinder 420 drives the fixing ring 425 to move, and the fixing ring 425 moves to squeeze the first spring 426, so that the first spring 426 contracts and accumulates elastic potential energy. The movement of the slide cylinder 420 drives the sealing ring 422 to separate from the side groove 413. At this time, the resistance surface 433 in the trigger component 43 contacts the extrusion surface 445 in the movable component 44. At this time, the resistance surface 433 blocks the extrusion surface 445, so that the resistance plate 444 is in a stationary state relative to the blocking column 432, but is in a moving state relative to the slide cylinder 420. The slide cylinder 420 continues to move, driving the elastic rope 443 to stretch and accumulate elastic potential energy. When the air hole 423 passes through the sealing gasket 412 and enters the interior of the pipe group 3, the installation cover 400 is rotated to move the installation cover 400 toward the pipe group 3 while fixing the installation cover 400 and making the air leakage hole 423 further penetrate into the pipe group 3. The thrust generated when the installation cover 400 moves makes the contact plate 444 touch the inner wall of the air leakage hole 423. At this time, the extrusion surface 445 squeezes the contact surface 433, so that the blocking column 432 enters the inner groove 430. When the blocking column 432 enters the inner groove 430, the force end of the contact plate 444 disappears, and the elastic potential energy of the elastic rope 443 is released to drive the contact plate 444 to reset, so that the contact plate 444 resets and drives the air leakage hole 423 to be in a fully opened state. At this time, the interior of the pipe group 3 forms a passage through the air leakage hole 423, the sliding pipe, the butt pipe 401 and the independent ventilation cage 2. The installation cover 400 continues to be rotated until it is fully screwed together. At this time, the installation operation is completed. When the device is reset, the mounting cover 400 can be rotated out in the reverse direction. When the sealing plate 441 is reset, the elastic potential energy generated by the first spring 426 drives the slide 420 to reset. When the sealing plate 441 conflicts with the blocking column 432, the elastic potential energy generated by the first spring 426 drives the sealing plate 441 to fit with the bottom of the bottom groove 440. The elastic potential energy of the first spring 426 drives the extrusion surface 445 to extrude the contact surface 433, so that the blocking column 432 re-enters the inner groove 430. At this time, the reset work is completed.

[0050] In summary, the trigger component 43 and the movable component 44 block the air leakage hole 423, so that when it enters the tube group 3, the trigger component 43 blocks the movable component 44, so that it continues to block the air leakage hole 423. After it enters the tube group 3 for a certain length, the trigger component 43 cancels the limit on the movable component 44. At this time, the movable component 44 is reset, driving the air leakage hole 423 to be directly exposed to the inside of the tube group 3. Because the air leakage hole 423 is already located at a certain distance inside the tube group 3, the fixed component 41 and the docking component 40 are combined more tightly at this time, which can effectively avoid the occurrence of air leakage.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic closed air supply and exhaust structure for an independent ventilation cage, comprising a movable bracket (1) and an independent ventilation cage (2), characterized in that: The automatic closed air supply and exhaust structure comprises a tube group (3) and a connecting mechanism (4); the independent ventilation cage (2) is located inside the movable bracket (1), and the independent ventilation cage (2) and the tube group (3) are connected via the connecting mechanism (4); The communication mechanism (4) comprises a docking assembly (40) rotatably mounted on the independent ventilation cage (2); the docking assembly (40) is internally threadedly connected to a fixing assembly (41); a blocking assembly (42) is provided between the docking assembly (40) and the fixing assembly (41); and a trigger assembly (43) and a movable assembly (44) are provided between the blocking assembly (42) and the fixing assembly (41); The blocking component (42) comprises a slide cylinder (420) located inside the fixed component (41); a placement groove (421) is provided at a closed end of the slide cylinder (420); a sealing ring (422) is placed inside the placement groove (421); a plurality of air leakage holes (423) are provided on the circumference of the slide cylinder (420); a guide cone (424) is fixedly installed inside the slide cylinder (420); a fixing ring (425) is fixedly installed on the outer wall of the slide cylinder (420); and the fixing ring (425) is connected to the fixed component (41) via a first spring (426).

2. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 1, characterized in that: The open end of the slide cylinder (420) is conical, the cross section of the air leakage hole (423) is rectangular, and the fixing ring (425) is located inside the fixing assembly (41) and is slidably connected to the fixing assembly (41).

3. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 2, characterized in that: The pipe group (3) comprises an intake main pipe (30) and an exhaust main pipe (31) fixedly connected to the upper and lower ends of the movable bracket (1); an intake branch pipe (33) and an exhaust branch pipe (34) are respectively fixedly connected to the intake main pipe (30) and the exhaust main pipe (31); and a plurality of fixed components (41) are evenly arranged on the intake branch pipe (33) and the exhaust branch pipe (34).

4. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 3, characterized in that: The ends of the air intake branch pipe (33) and the exhaust branch pipe (34) away from the connection point are both closed, and the cross-sections of the air intake branch pipe (33) and the exhaust branch pipe (34) are both flat.

5. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 3, characterized in that: The docking assembly (40) comprises a mounting cover (400) rotatably connected to the independent ventilation cage (2), a docking tube (401) being fixedly connected to the inner wall of the mounting cover (400), the inner wall of the docking tube (401) being in a "V" shape, and the docking tube (401) being adapted to fit the slide cylinder (420).

6. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 5, characterized in that: The fixing assembly (41) comprises a connecting ring (410) fixedly connected to an intake branch pipe (33) or an exhaust branch pipe (34); the other end of the connecting ring (410) is fixedly connected to a connecting cover (411); a sealing gasket (412) is placed on one end of the connecting cover (411) close to the connecting ring (410); an inner wall of the connecting cover (411) is provided with a side groove (413) corresponding to the sealing ring (422); an outer wall of an open end of the connecting cover (411) is provided with a guide groove (414); and an inner wall of the connecting cover (411) is provided with a spring groove (415).

7. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 6, characterized in that: The connecting ring (410) and the connecting cover (411) are integrally cast, the sealing ring (422) is located inside the connecting ring (410), the connecting cover (411) has a circular cross section, and the side groove (413) has an arc cross section.

8. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 7, characterized in that: The trigger assembly (43) comprises an inner groove (430) formed on the inner wall of the connection cover (411); the inner wall of the inner groove (430) is fixedly connected to a blocking column (432) via a second spring (431); and a contact surface (433) is formed at one end of the blocking column (432) away from the second spring (431); The movable component (44) comprises a bottom groove (440) provided on the air leakage hole (423); a sealing plate (441) is slidably connected to the inner wall of the bottom groove (440); a rope groove (442) is provided at the bottom of the sealing plate (441); an elastic rope (443) is fixedly connected between the inner wall of the rope groove (442) and the bottom groove (440); a resistance plate (444) is fixedly connected to one end of the sealing plate (441) away from the elastic rope (443); an extrusion surface (445) is provided on the resistance plate (444) corresponding to the resistance surface (433); a limiting plate (446) is fitted to the inner wall of the sealing plate (441); and the limiting plate (446) is fixedly connected to the air leakage hole (423).

9. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 8, characterized in that: The inner groove (430) is slidably connected to the barrier column (432), and two ends of the second spring (431) are fixedly connected to the barrier column (432) and the inner groove (430) respectively.

10. The automatic closed air supply and exhaust structure for an independent ventilation cage according to claim 8, characterized in that: The outer wall of the sealing plate (441) is fitted with the inner wall of the air leakage hole (423); the elastic rope (443) is woven from elastic fibers; and the cross section of the abutment plate (444) is arc-shaped.

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