Cabin air purifying and filtering device

Abstract

The invention belongs to the technical field of cabin air purification, and particularly relates to a cabin air purifying and filtering device which comprises a front baffle and a rear baffle. The surface of the front baffle and the surface of the rear baffle are each provided with a pair of air suction ports. Filtering assemblies are installed at the positions, corresponding to the air suction ports, of the surfaces of one sides of the front baffle and the rear baffle. A telescopic assembly is installed between the front baffle and the rear baffle. A connecting belt is arranged at the bottom position between the front baffle and the rear baffle; a diaphragm is arranged on the bottom surface of the connecting belt; a thin film cover is mounted at the top of the connecting belt between the front baffle and the rear baffle; an exhaust fan is installed on the side, away from the filtering assembly, of the front baffle, the distance between the two baffles is adjusted through the telescopic assembly, patients of different heights can smoothly lie in the device, meanwhile, the distance between the heads and the feet of the patients and the front baffle and the distance between the feet of the patients and the rear baffle can be reduced through adjustment of the telescopic assembly, and therefore the patient can be more comfortable. Therefore, space waste is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of cabin air purification, in particular to a cabin air purification and filtering device. Background Art

[0002] An infectious disease is a disease caused by pathogens that can be transmitted between people or between people and animals. During the transportation of patients with infectious diseases, in order to ensure the safety of medical staff and the surrounding people, it is often necessary to isolate the patients from the external environment.

[0003] The prior art also proposes some solutions. For example, a Chinese patent with publication number CN212547503U discloses a negative pressure isolation cabin, including a bottom shell, a side shell, a cover body, a negative pressure generator, a first gas adapter, a second gas adapter, an operating hand hole, a supply detection hole and a support mechanism. This technical solution forms a negative pressure in the isolation cabin to achieve the isolation and transportation of patients with severe respiratory infections to avoid contaminating the environment along the way. At the same time, it can also indirectly protect medical staff and reduce the infection rate of medical staff.

[0004] In the prior art, the size of the isolation cabin is fixed, but in reality, the heights of patients are different, and the size of the isolation cabin cannot be changed, resulting in the isolation cabin not being able to fit the patient's body height well, making it impossible for the patient to lie down in the isolation cabin.

[0005] To this end, the present invention provides a cabin air purification and filtering device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a cabin air purification and filtering device described in the present invention comprises a front baffle and a rear baffle; a pair of air inlets are provided on the surfaces of the front baffle and the rear baffle; a filter assembly is installed on one side surface of the front baffle and the rear baffle at positions corresponding to the air inlets; the filter assembly is used to filter the air passing through the inside thereof; a telescopic assembly is installed between the front baffle and the rear baffle; the telescopic assembly is used to control the distance between the front baffle and the rear baffle; a connecting belt is provided at the bottom position between the front baffle and the rear baffle; a diaphragm is provided on the bottom surface of the connecting belt; One side of the diaphragm is fixedly connected to the connecting belt, and the other three sides are connected to the connecting belt through a zipper; a film cover is installed between the front baffle and the rear baffle at the top of the connecting belt, and the film cover is transparent; an exhaust fan is installed on the side of the front baffle away from the filter assembly, and the exhaust fan is connected to the filter assembly through the air intake port; when working, when transferring patients with high-intensity respiratory infectious diseases, in order to reduce their impact on the external environment, the embodiment of the present invention can be used, and the embodiment of the present invention can be placed on the top of the stretcher to realize the transfer of the patient. First, the medical staff can control the space between the front baffle and the rear baffle through the telescopic assembly The medical staff can unzip the connecting belt and the diaphragm before use, and then flip the front baffle, the film cover and the rear baffle to expose the top of the diaphragm. At this time, the patient can lie on the diaphragm, and then the medical staff will buckle the film cover on the diaphragm again, and pull the zipper between the connecting belt and the diaphragm to complete the seal on the patient. Then the medical staff will connect the exhaust fan to the external power supply and start the exhaust fan. At this time, the exhaust fan will pass through the filter component at the air inlet to draw the space formed by the diaphragm, the connecting belt and the film cover to a negative pressure state. At this time, the external air will pass through the filter component at the rear baffle. The filter assembly enters into the space formed by the diaphragm, the connecting belt and the film cover, thereby ensuring that the gas exhaled by the patient can be filtered by the filter assembly instead of directly overflowing to the outside, thereby reducing its impact on the patient outside. By adjusting the distance between the two baffles through the telescopic assembly, patients of different heights can lie smoothly in the embodiment of the present invention. At the same time, the distance between the patient's head and feet and the front baffle and the rear baffle can be reduced by adjusting the telescopic assembly, thereby avoiding space waste and further reducing the power of the exhaust fan. When a battery with the same power is connected externally, the embodiment of the present invention can work for a longer time.

[0008] Preferably, the filter assembly includes a filter box, and the filter box is arranged in a cylindrical shape; a cannula is fixedly connected to one side of the filter box, and the cannula extends into the interior of the filter box; an air hole is opened at the center of the circle of the end face of the filter box at one end of the filter box away from the cannula, and a gauze is fixedly connected to the air hole; a support plate is fixedly connected to one end of the cannula inside the filter box, and the support plate is arranged in a circular shape; a filter pad is fixedly connected between the support plate and the inner wall of the filter box, and the filter pad is arranged in an annular shape; the inner diameter of the filter pad is consistent with the air hole, and the outer diameter of the filter pad is consistent with the diameter of the support plate; a through groove is opened on the side surface of the cannula and the interior of the filter box; when working, when the gas to be filtered enters the interior of the filter box from the air hole and the gauze on the surface of the filter box, the gas to be filtered The filtered gas will enter the hole at the center of the filter pad. Since the two ends of the filter pad are attached to the inner wall of the filter box and the support plate, the gas to be filtered passes through the multi-layer filter pad and enters the space between the inner wall of the filter box and the outer wall of the filter pad, and then is discharged to the outside from the through groove on the surface of the insert tube. Since the gas to be filtered enters from the hole in the center of the filter pad and then overflows from its outer wall, the gas to be filtered can contact the filter pad more evenly, avoiding the situation in which only the part of the traditional filter pad at the air inlet can fully contact the gas to be filtered, while the other parts cannot contact the gas to be filtered well, thereby causing inconsistent wear of various parts of the filter pad, and thus causing waste of the filter pad.

[0009] Preferably, an annular membrane is fixedly connected to the inner wall of the air intake port; the inner diameter of the annular membrane is consistent with the insertion tube; an extrusion cover is rotatably connected to the inner wall of the air intake port; the extrusion cover is threadedly connected to the insertion tube; during operation, when the user needs to replace the filter box, the user needs to first screw the extrusion cover at the air intake port to disengage the extrusion cover from the connecting tube, and then the user takes out the filter box from the operating tube one or the operating tube two, and then takes out the filter box to be replaced, and inserts its insertion tube into the hole in the middle of the annular membrane, and then the medical staff screws the extrusion cover again, thereby squeezing the extrusion cover and the filter box together, and also squeezing the annular membrane together, thereby completing the sealing of the connection and ensuring that the gas flows to the outside through the filter box as much as possible.

[0010] Preferably, the extrusion cover is provided with a groove on one side close to the filter box, and the groove is arranged in an annular shape; an annular plate is fixedly connected to the surface of the filter box at a position corresponding to the groove, and the annular plate is adapted to the groove; during operation, when the medical staff screws the extrusion cover to move the extrusion cover toward the filter box, the annular plate on the surface of the filter box will also push the annular membrane to move toward the groove on the surface of the extrusion cover, thereby inserting a part of the annular membrane into the groove, thereby further improving the sealing between the extrusion cover and the filter box.

[0011] Preferably, a pair of connecting boxes are fixedly connected to the bottom of the front baffle and the rear baffle on the side away from each other; a pull plate is slidably connected inside the connecting box; a spring is fixedly connected between the pull plate and the inner wall of the connecting box; a hook is fixedly connected to one end of the pull plate outside the connecting box; during operation, when medical staff place the embodiment of the present invention on a stretcher, when the medical staff needs to pull the pull plate at the connecting box and stretch the spring, and then hook the stock hooks at the ends of the pull plate on both sides of the stretcher, the stretched spring will apply tension to the pull plate, and then make the hooks tightly clasp the sides of the stretcher, thereby fixing the embodiment of the present invention to prevent the embodiment of the present invention from falling off the stretcher when the stretcher moves.

[0012] Preferably, the telescopic component includes multiple sleeves; the diameters of the multiple sleeves decrease in sequence, and the multiple sleeves are sequentially sleeved together according to the diameters; both ends of the multiple sleeves are fixedly connected with threaded tubes, and the threaded tubes and the sleeves to which they are fixed have the same diameter; the inner and outer sides of the threaded tubes are provided with threads, and two adjacent threaded tubes can be threadedly connected; during operation, when the medical staff needs to adjust the spacing between the two baffles, the medical staff can screw the sleeve so that the threaded tube at the end of the sleeve is released from the threaded connection with the threaded rod at the end of the adjacent sleeve, and then the medical staff can slide the sleeve to extend it, and then fix it by the threaded tube at its end, so as to facilitate the medical staff to fix the spacing between the front baffle and the rear baffle.

[0013] Preferably, the side surfaces of the sleeve are fixedly connected with connecting rings; the surface of the diaphragm is fixedly connected with a plurality of evenly arranged connecting rods; the connecting rods are arranged in an arc-shaped structure; a sliding hole is opened at one end of the connecting rod, the sliding hole is slidably connected with the telescopic rod, and the diameter of the sliding hole is smaller than the outer diameter of the connecting ring; during operation, when the medical staff slides the sleeve, the sleeve will also push the connecting rod through the connecting ring, and the connecting rod will then pull the diaphragm cover and tighten the diaphragm cover. Since the connecting rod divides the diaphragm into sections, the medical staff can slide the sleeve to individually adjust whether a certain section of the film cover and the diaphragm are squeezed and folded. At the same time, adjacent sleeves can be fixed together by the expansion and contraction of the threaded tube, thereby avoiding the film cover that has been squeezed and folded together from unfolding again.

[0014] Preferably, an operating tube 1 is fixedly connected to the surface of the diaphragm between the paired connecting rods; a pair of operating tubes 2 are fixedly connected to the surface of the rear baffle at the bottom of the air inlet; a blocking film is provided on the surfaces of the operating tube 1 and the operating tube 2; the blocking film is connected to the operating tube 1 and the operating tube 2 through a zipper; during operation, when medical staff need to examine or treat patients, they need to first open the zipper between the blocking film and the operating tube 1 or the operating tube 2 to facilitate the medical staff to put their hands between the diaphragm and the film cover to treat the patient. At this time, since the space formed by the diaphragm and the film cover is a negative pressure environment, the polluted gas exhaled by the patient will not directly overflow from the operating tube 1 or the operating tube 2 in large quantities, thereby facilitating the medical staff to protect themselves while treating the patients.

[0015] Preferably, the inner walls of the operation tube 1 and the operation tube 2 are both fixedly connected with a connecting seat; the connection is arranged in an annular structure and is made of elastic material; an annular groove is opened on the surface of the connecting seat; the annular groove is arranged in a constricted shape; a fixing ring is arranged in the annular groove; during work, when it is necessary to treat the patient through the operation tube 1 or the operation tube 2, the medical staff can install the medical gloves on the operation tube 1 or the operation tube 2 in advance, firstly, the medical staff needs to wrap the cuffs of the medical gloves on the surface of the fixing ring, and then the medical staff inserts the fixing ring into the annular groove on the surface of the connecting seat, and the medical gloves are fixed to the operation tube 1 or the operation tube 2 by squeezing the fixing ring and the medical gloves on its surface by the annular groove, and when the inside of the diaphragm and the film cover is pumped to negative pressure, the cuffs of the medical gloves will be pressed on the connecting seat by the external atmospheric pressure, thereby ensuring the sealing of the operation tube 1 and the operation tube 2, and further ensuring the safety of the medical staff and reducing the pollution to the external environment.

[0016] Preferably, the operating tube 1 and the operating tube 2 are fixedly connected with a rotating seat on one side away from the blocking membrane; a cover plate is rotatably connected to the surface of the rotating seat, and a torsion spring is installed at the rotating connection between the cover plate and the rotating seat; the cover plate is made of elastic material; the edge of the cover plate is fixedly connected to the inner wall of the operating tube 1 and the operating tube 2 with magnet blocks arranged opposite to each other; during operation, when the medical staff puts their hands into the medical gloves, the medical staff will push the cover plate at the operating tube 1 or the operating tube 2 away from the operating tube 1 or the operating tube 2, at which time the medical staff can treat the patient normally, and when the user does not need to put his hands into the diaphragm and the film cover When treating a patient, the user can roll up the gloves and place them on the first or second operating tube. During this process, since the medical staff no longer squeezes the cover, the torsion spring between the connecting seat and the cover will drive the cover to reset, buckle the cover back to the surface of the first or second operating tube, and adsorb the cover through the magnet. Then the medical staff zips up the sealing film on the first or second operating tube through the zipper, which will clamp the gloves between the sealing film and the cover, and avoid the gloves always extending into the diaphragm and the film cover due to pressure, thereby facilitating the medical staff to store the medical gloves.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The cabin air purification and filtering device described in the present invention can adjust the distance between the two baffles through the telescopic component, so that patients of different heights can lie down smoothly in the embodiment of the present invention. At the same time, the distance between the patient's head and feet and the front baffle and the rear baffle can be reduced by adjusting the telescopic component, thereby avoiding space waste and further reducing the power of the exhaust fan. Therefore, when an external battery with the same power is connected, the embodiment of the present invention can work for a longer time.

[0019] 2. The cabin air purification and filtering device described in the present invention can make the gas to be filtered enter from the central hole of the filter pad and then overflow from its outer wall, so that the gas to be filtered can contact the filter pad more evenly, thereby avoiding the situation in which only the part of the traditional filter pad close to the air inlet can fully contact the gas to be filtered, while the other parts cannot make good contact with the gas to be filtered, thereby causing inconsistent wear of various parts of the filter pad, thereby causing waste of the filter pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the rear baffle in the present invention;

[0023] Figure 3is a partial cross-sectional view of the filter box of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the cannula in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the threaded pipe in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the operating tube 1 in the present invention;

[0027] Figure 7 It is a structural schematic diagram of the operating tube 2 in the present invention;

[0028] Figure 8 It is a structural schematic diagram of the connecting seat in the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the connection box in the present invention;

[0030] In the figure: 1. front baffle; 2. rear baffle; 3. air inlet; 4. connecting belt; 5. diaphragm; 6. film cover; 7. exhaust fan; 8. filter box; 9. intubation tube; 10. air hole; 11. support plate; 12. filter pad; 13. through groove; 14. sleeve; 15. threaded pipe; 16. connecting ring; 17. connecting rod; 18. sliding hole; 19. operating tube one; 20. operating tube two; 21. blocking membrane; 22. connecting seat; 23. annular groove; 24. fixing ring; 25. rotating seat; 27. cover plate; 28. magnet block; 29. ​​annular membrane; 30. extrusion cover; 31. groove; 32. annular plate; 33. connecting box; 34. pull plate; 35. spring; 36. hook. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figure 1 to Figure 2As shown, a cabin air purification and filtering device according to an embodiment of the present invention comprises a front baffle 1 and a rear baffle 2; a pair of air inlets 3 are provided on the surfaces of the front baffle 1 and the rear baffle 2; a filter assembly is installed on one side surface of the front baffle 1 and the rear baffle 2 at positions corresponding to the air inlet 3; the filter assembly is used to filter the air passing through the interior thereof; a telescopic assembly is installed between the front baffle 1 and the rear baffle 2; the telescopic assembly is used to control the distance between the front baffle 1 and the rear baffle 2; a connecting belt 4 is provided at the bottom position between the front baffle 1 and the rear baffle 2; a diaphragm 5 is provided on the bottom surface of the connecting belt 4; one side of the diaphragm 5 is provided with a diaphragm 5 ... The front baffle 1 and the rear baffle 2 are fixedly connected to the connecting belt 4, and the other three sides are connected to the connecting belt 4 by a zipper; a film cover 6 is installed between the front baffle 1 and the rear baffle 2 at the top of the connecting belt 4, and the film cover 6 is transparent; an exhaust fan 7 is installed on the side of the front baffle 1 away from the filter assembly, and the exhaust fan 7 is connected to the filter assembly through the air inlet 3; when working, when transferring patients with highly severe respiratory infectious diseases, in order to reduce their impact on the external environment, the embodiment of the present invention can be used. The embodiment of the present invention can be placed on the top of the stretcher to realize the transfer of the patient. First, the medical staff can control the distance between the front baffle 1 and the rear baffle 2 through the telescopic assembly to To meet the needs of patients of different heights, the medical staff can unzip the zipper between the connecting belt 4 and the diaphragm 5 before use, and then flip the front baffle 1, the film cover 6 and the rear baffle 2 to expose the top of the diaphragm 5. At this time, the patient is allowed to lie on the diaphragm 5, and then the medical staff buckles the film cover 6 on the diaphragm 5 again, and pulls the zipper between the connecting belt 4 and the diaphragm 5 to complete the seal on the patient. Then the medical staff connects the exhaust fan 7 to the external power supply and starts the exhaust fan 7. At this time, the exhaust fan 7 will pass through the filter component at the air inlet 3 to draw the space formed by the diaphragm 5, the connecting belt 4 and the film cover 6 to a negative pressure state. At this time, the external air will enter from the rear baffle The filter assembly at the plate 2 enters into the space formed by the diaphragm 5, the connecting belt 4 and the film cover 6, thereby ensuring that the gas exhaled by the patient can be filtered by the filter assembly instead of directly overflowing to the outside, thereby reducing its impact on the patient outside. By adjusting the distance between the two baffles through the telescopic assembly, patients of different heights can lie smoothly in the embodiment of the present invention. At the same time, the distance between the patient's head and feet and the front baffle 1 and the rear baffle 2 can be reduced by adjusting the telescopic assembly, thereby avoiding space waste and further reducing the power of the exhaust fan 7. Therefore, when a battery with the same power is connected externally, the embodiment of the present invention can work for a longer time.

[0033] like Figures 1 to 4As shown, the filter assembly includes a filter box 8, and the filter box 8 is arranged in a cylindrical shape; a cannula 9 is fixedly connected to one side of the filter box 8, and the cannula 9 extends into the interior of the filter box 8; an air hole 10 is opened at the center of the circle of the end face of the filter box 8 at one end of the filter box 8 away from the cannula 9, and a gauze is fixedly connected to the air hole 10; a support plate 11 is fixedly connected to one end of the cannula 9 inside the filter box 8, and the support plate 11 is arranged in a circular shape; a filter pad 12 is fixedly connected between the support plate 11 and the inner wall of the filter box 8, and the filter pad 12 is arranged in an annular shape; the inner diameter of the filter pad 12 is consistent with the air hole 10, and the outer diameter of the filter pad 12 is consistent with the diameter of the support plate 11; a through groove 13 is opened on the side surface of the cannula 9 and the interior of the filter box 8; when working, when the gas to be filtered enters the filter box from the air hole 10 and the gauze on the surface of the filter box 8 8, the gas to be filtered will enter the hole at the center of the filter pad 12. Since the two ends of the filter pad 12 are attached to the inner wall of the filter box 8 and the support plate 11, the gas to be filtered passes through the multi-layer filter pad 12 and enters the space between the inner wall of the filter box 8 and the outer wall of the filter pad 12, and then is discharged to the outside through the through groove 13 on the surface of the insert tube 9. Since the gas to be filtered enters from the central hole of the filter pad 12 and then overflows from its outer side wall, the gas to be filtered can be more evenly contacted with the filter pad 12, avoiding that only the part of the traditional filter pad 12 at the air inlet 10 can fully contact with the gas to be filtered, while the other parts cannot be well contacted with the gas to be filtered, thereby causing inconsistent loss of various parts of the filter pad 12, thereby causing waste of the filter pad 12.

[0034] like Figures 2 to 4 As shown, an annular membrane 29 is fixedly connected to the inner wall of the air intake port 3; the inner diameter of the annular membrane 29 is consistent with the insertion tube 9; an extrusion cover 30 is rotatably connected to the inner wall of the air intake port 3; the extrusion cover 30 is threadedly connected to the insertion tube 9; during operation, when the user needs to replace the filter box 8, the user needs to first screw the extrusion cover 30 at the air intake port 3 to disengage the extrusion cover 30 from the connecting pipe, and then the user takes out the filter box 8 from the operation port 1 or the operation port 2, and then takes out the filter box 8 to be replaced, and inserts its insertion tube 9 into the hole in the middle of the annular membrane 29, and then the medical staff screws the extrusion cover 30 again, thereby squeezing the extrusion cover 30 and the filter box 8 together, and at the same time, the annular membrane 29 is squeezed together, thereby completing the sealing of the connection to ensure that the gas flows to the outside through the filter box 8 as much as possible.

[0035] like Figures 2 to 4As shown, the extrusion cover 30 is provided with a groove 31 on one side close to the filter box 8, and the groove 31 is arranged in an annular shape; an annular plate 32 is fixedly connected to the surface of the filter box 8 at a position corresponding to the groove 31, and the annular plate 32 is adapted to the groove 31; during operation, when the medical staff screws the extrusion cover 30 to move the extrusion cover 30 toward the filter box 8, the annular plate 32 on the surface of the filter box 8 will also push the annular membrane 29 to move toward the groove 31 on the surface of the extrusion cover 30, thereby inserting a part of the annular membrane 29 into the groove 31, thereby further improving the sealing between the extrusion cover 30 and the filter box 8.

[0036] like Figure 1 and Fig. 9 As shown, a pair of connection boxes 33 are fixedly connected to the bottom of the side away from each other of the front baffle 1 and the rear baffle 2; a pull plate 34 is slidably connected inside the connection box 33; a spring 35 is fixedly connected between the pull plate 34 and the inner wall of the connection box 33; a hook 36 is fixedly connected to one end of the pull plate 34 outside the connection box 33; during operation, when the medical staff places the embodiment of the present invention on a stretcher, when the medical staff needs to pull the pull plate 34 at the connection box 33 and stretch the spring 35, and then hook the stock hook 36 at the end of the pull plate 34 on both sides of the stretcher, the stretched spring 35 will apply tension to the pull plate 34, and then make the hook 36 tightly buckle the side of the stretcher, thereby fixing the embodiment of the present invention to prevent the embodiment of the present invention from falling off the stretcher when the stretcher moves.

[0037] like Figure 1 and Figure 5 As shown, the telescopic component includes multiple sleeves 14; the diameters of the multiple sleeves 14 decrease in sequence, and the multiple sleeves 14 are sequentially sleeved together according to the diameters; both ends of the multiple sleeves 14 are fixedly connected with threaded tubes 15, and the threaded tubes 15 have the same diameter as the sleeves 14 fixed thereto; the inner and outer sides of the threaded tubes 15 are provided with threads, and two adjacent threaded tubes 15 can be threadedly connected; during operation, when the medical staff needs to adjust the spacing between the two baffles, the medical staff can screw the sleeve 14 so that the threaded tube 15 at the end of the sleeve 14 is released from the threaded connection with the threaded rod at the end of the adjacent sleeve 14, and then the medical staff can slide the sleeve 14 to extend it, and then fix it with the threaded tube 15 at its end, so as to facilitate the medical staff to fix the spacing between the front baffle 1 and the rear baffle 2.

[0038] like Figure 1 and Figure 5As shown, the side surface of the sleeve 14 is fixedly connected with a connecting ring 16; the surface of the diaphragm 5 is fixedly connected with a plurality of evenly arranged connecting rods 17; the connecting rod 17 is arranged in an arc-shaped structure; one end of the connecting rod 17 is provided with a sliding hole 18, the sliding hole 18 is slidably connected to the telescopic rod, and the diameter of the sliding hole 18 is smaller than the outer diameter of the connecting ring 16; during operation, when the medical staff slides the sleeve 14, the sleeve 14 will also push the connecting rod 17 through the connecting ring 16, and the diaphragm 5 cover will be pulled by the connecting rod 17 to tighten the diaphragm 5 cover. Since the connecting rod 17 divides the diaphragm 5 into sections, the medical staff can slide the sleeve 14 to adjust whether a certain section of the film cover 6 and the diaphragm 5 are squeezed and folded, and at the same time, the adjacent sleeves can be fixed together by the expansion and contraction of the threaded tube 15, thereby avoiding the film cover 6 that is squeezed and folded together from being stretched again.

[0039] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, an operation port 1 is opened on the surface of the diaphragm 5 between the paired connecting rods 17; a pair of operation ports 2 are opened on the surface of the rear baffle 2 at the bottom of the air inlet 3; a blocking film 21 is provided on the surfaces of the operation port 1 and the operation port 2; the blocking film 21 is connected to the operation port 1 and the operation port 2 through a zipper; during operation, when medical staff need to examine or treat patients, they need to first open the zipper between the blocking film 21 and the operation port 1 or the operation port 2 to facilitate the medical staff to put their hands between the diaphragm 5 and the film cover 6 to treat the patients. At this time, since the space formed by the diaphragm 5 and the film cover 6 is a negative pressure environment, the polluted gas exhaled by the patient will not directly overflow from the operation port 1 or the operation port 2 in large quantities, thereby facilitating the medical staff to protect themselves while treating the patients.

[0040] like Figures 6 to 8As shown, the inner walls of the operation port 1 and the operation port 2 are both fixedly connected with a connection seat 22; the connection is arranged in an annular structure and is made of elastic material; an annular groove 23 is opened on the surface of the connection seat 22; the annular groove 23 is arranged in a constricted shape; a fixing ring 24 is arranged in the annular groove 23; when working, when it is necessary to treat the patient through the operation port 1 or the operation port 2, the medical staff can install the medical gloves at the operation port 1 or the operation port 2 in advance. First, the medical staff needs to wrap the cuffs of the medical gloves on the fixing ring 24. The medical staff then inserts the fixing ring 24 into the annular groove 23 on the surface of the connecting seat 22, and the medical gloves are fixed to the operation port 1 or the operation port 2 by squeezing the fixing ring 24 and the medical gloves on its surface by the annular groove 23. When the inside of the diaphragm 5 and the film cover 6 are evacuated to a negative pressure, the cuffs of the medical gloves will be pressed against the connecting seat 22 by the external atmospheric pressure, thereby ensuring the sealing of the operation ports 1 and 2, thereby further ensuring the safety of the medical staff and reducing the pollution to the external environment.

[0041] like Figure 6 and Figure 7 As shown, the operation port 1 and the operation port 2 are fixedly connected to a rotating seat 25 on one side away from the blocking membrane 21; the surface of the rotating seat 25 is rotatably connected to a cover plate 27, and a torsion spring is installed at the rotation connection between the cover plate 27 and the rotating seat 25; the cover plate 27 is made of elastic material; the edge position of the cover plate 27 is fixedly connected to the inner wall of the operation port 1 and the operation port 2 with a magnet block 28 arranged opposite to each other; during work, when the medical staff puts their hands into the medical gloves, the medical staff will push the cover plate 27 at the operation port 1 or the operation port 2 away from the operation port 1 or the operation port 2, and the medical staff can treat the patient normally at this time, and when the user does not need to put his hand into the diaphragm 5 and the film cover 6 When treating a patient, the user can roll up the gloves and place them at the operation port one or two. During this process, since the medical staff no longer squeezes the cover 30 plate 27, the torsion spring between the connecting seat 22 and the cover plate 27 will drive the cover plate 27 to reset, buckle the cover plate 27 back to the surface of the operation port one or two, and adsorb the cover plate 27 through the magnet block 28. Then the medical staff will zip up the sealing film 21 at the operation port one or two through the zipper, which will clamp the gloves between the sealing film 21 and the cover plate 27, and avoid the gloves from always extending into the inside of the diaphragm 5 and the film cover 6 due to pressure reasons, thereby facilitating the medical staff to store the medical gloves.

[0042] During work, when transferring patients with highly severe respiratory infectious diseases, in order to reduce their impact on the external environment, the embodiment of the present invention can be used. The embodiment of the present invention can be placed on the top of the stretcher to realize the transfer of the patient. First, the medical staff can control the distance between the front baffle 1 and the rear baffle 2 through the telescopic component to meet the needs of patients of different heights. Before use, the medical staff can unzip the zipper between the connecting belt 4 and the diaphragm 5, and then flip the front baffle 1, the film cover 6 and the rear baffle 2 to expose the top of the diaphragm 5. At this time, the patient is allowed to lie on the diaphragm 5, and then the medical staff buckles the film cover 6 on the diaphragm 5 again, and pulls the zipper between the connecting belt 4 and the diaphragm 5 to complete the sealing of the patient. Then the medical staff connects the exhaust fan 7 to the external power supply and starts the exhaust fan 7. At this time, the exhaust fan 7 will evacuate the space formed by the diaphragm 5, the connecting belt 4 and the film cover 6 to a negative pressure state through the filter component at the air inlet 3. At this time, the external gas will enter the space formed by the diaphragm 5, the connecting belt 4 and the film cover 6 from the filter component at the rear baffle 2, thereby ensuring that the gas exhaled by the patient can be filtered by the filter component instead of directly overflowing to the outside, thereby reducing its impact on the external patient. By adjusting the distance between the two baffles through the telescopic component, patients of different heights can lie smoothly in the embodiment of the present invention. At the same time, the distance between the patient's head and feet and the front baffle 1 and the rear baffle 2 can be reduced by adjusting the telescopic component, thereby avoiding space waste, thereby reducing the power of the exhaust fan 7, so that when a battery with the same power is connected externally, the embodiment of the present invention can work for a longer time.

[0043] When the gas to be filtered enters the interior of the filter box 8 through the pores 10 and the gauze on the surface of the filter box 8, the gas to be filtered will enter the hole at the center of the filter pad 12. Since the two ends of the filter pad 12 are attached to the inner wall of the filter box 8 and the support plate 11, the gas to be filtered passes through the multi-layer filter pad 12 and enters the space between the inner wall of the filter box 8 and the outer wall of the filter pad 12, and then is discharged to the outside through the through groove 13 on the surface of the insert tube 9. Since the gas to be filtered enters from the central hole of the filter pad 12 and then overflows from its outer side wall, the gas to be filtered can contact the filter pad 12 more evenly, avoiding the situation that only the part of the traditional filter pad 12 at the air inlet 10 can fully contact the gas to be filtered, while the other parts cannot make good contact with the gas to be filtered, thereby causing inconsistent loss of various parts of the filter pad 12, thereby causing waste of the filter pad 12.

[0044] When the user needs to replace the filter box 8, the user needs to first screw the squeezing cover 30 at the air inlet 3 to separate the squeezing cover 30 from the connecting tube, and then the user takes out the filter box 8 from the operation port 1 or the operation port 2, and then takes out the filter box 8 to be replaced, and inserts its cannula 9 into the hole in the middle of the annular membrane 29, and then the medical staff screws the squeezing cover 30 again, thereby squeezing the squeezing cover 30 and the filter box 8 together, and also squeezing the annular membrane 29 together, thereby completing the sealing of the connection and ensuring that the gas flows to the outside through the filter box 8 as much as possible.

[0045] When the medical staff screws the extrusion cover 30 to move the extrusion cover 30 toward the filter box 8, the annular plate 32 on the surface of the filter box 8 will also push the annular membrane 29 to move toward the groove 31 on the surface of the extrusion cover 30, thereby inserting a portion of the annular membrane 29 into the groove 31, thereby further improving the sealing between the extrusion cover 30 and the filter box 8.

[0046] When the medical staff places the embodiment of the present invention on a stretcher, they need to pull the pull plate 34 at the connection box 33 and stretch the spring 35, and then hook the stock hooks 36 at the ends of the pull plate 34 on both sides of the stretcher. At this time, the stretched spring 35 will apply a pulling force to the pull plate 34, and then the hooks 36 will tightly clasp the sides of the stretcher, thereby fixing the embodiment of the present invention to prevent the embodiment of the present invention from falling off the stretcher when the stretcher moves.

[0047] When the medical staff needs to adjust the distance between the two baffles, the medical staff can screw the sleeve 14 to release the threaded connection between the threaded tube 15 at the end of the sleeve 14 and the threaded rod at the end of the adjacent sleeve 14. At this time, the medical staff can slide the sleeve 14 to extend it, and then fix it with the threaded tube 15 at its end, so as to facilitate the medical staff to fix the distance between the front baffle 1 and the rear baffle 2.

[0048] When the medical staff slides the sleeve 14, the sleeve 14 will also push the connecting rod 17 through the connecting ring 16, and the connecting rod 17 will then pull the diaphragm 5 cover and tighten the diaphragm 5 cover. Since the connecting rod 17 divides the diaphragm 5 into sections, the medical staff can slide the sleeve 14 to adjust whether a certain section of the film cover 6 and the diaphragm 5 is squeezed and folded. At the same time, the adjacent sleeves can be fixed together by the expansion and contraction of the threaded tube 15, thereby avoiding the film cover 6 that is squeezed and folded together from being stretched again.

[0049] When medical staff need to examine or treat patients, they need to first open the zipper between the blocking membrane 21 and the operating port 1 or the operating port 2 to facilitate the medical staff to put their hands between the diaphragm 5 and the film cover 6 to treat the patient. At this time, since the space formed by the diaphragm 5 and the film cover 6 is a negative pressure environment, the polluted gas exhaled by the patient will not directly overflow from the operating port 1 or the operating port 2 in large quantities, thereby facilitating the medical staff to treat the patients while protecting themselves.

[0050] When it is necessary to treat the patient through the operation port 1 or the operation port 2, the medical staff can install the medical gloves at the operation port 1 or the operation port 2 in advance. First, the medical staff needs to wrap the cuffs of the medical gloves on the surface of the fixing ring 24, and then the medical staff inserts the fixing ring 24 into the annular groove 23 on the surface of the connecting seat 22. The annular groove 23 squeezes the fixing ring 24 and the medical gloves on its surface to fix the medical gloves at the operation port 1 or the operation port 2. When the inside of the diaphragm 5 and the film cover 6 are evacuated to a negative pressure, the cuffs of the medical gloves will be pressed against the connecting seat 22 by the external atmospheric pressure, thereby ensuring the sealing of the operation ports 1 and 2, thereby further ensuring the safety of the medical staff and reducing the pollution to the external environment.

[0051] When the medical staff puts their hands into the medical gloves, they will push the cover plate 27 at the operation port 1 or the operation port 2 away from the operation port 1 or the operation port 2. At this time, the medical staff can treat the patient normally. When the user does not need to reach into the diaphragm 5 and the film cover 6 to treat the patient, the user can roll the gloves into a ball and place them at the operation port 1 or the operation port 2. During this process, since the medical staff no longer squeezes the cover plate 30 27, the torsion spring between the connecting seat 22 and the cover plate 27 will drive the cover plate 27 to reset, buckle the cover plate 27 back to the surface of the operation port 1 or the operation port 2, and absorb the cover plate 27 through the magnet block 28. Then the medical staff will pull up the blocking film 21 at the operation port 1 or the operation port 2 through the zipper, and the gloves will be clamped between the blocking film 21 and the cover plate 27, so as to avoid the gloves always being in the state of extending into the diaphragm 5 and the film cover 6 due to pressure reasons, thereby facilitating the medical staff to store the medical gloves.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cabin air purification and filtering device, characterized in that: The invention comprises a front baffle (1) and a rear baffle (2); a pair of air inlets (3) are provided on the surfaces of the front baffle (1) and the rear baffle (2); a filter assembly is installed on one side of the surface of the front baffle (1) and the rear baffle (2) at a position corresponding to the air inlet (3); the filter assembly is used to filter the air passing through the inside thereof; a telescopic assembly is installed between the front baffle (1) and the rear baffle (2); the telescopic assembly is used to control the distance between the front baffle (1) and the rear baffle (2); the distance between the front baffle (1) and the rear baffle (2) is controlled by the telescopic assembly. A connecting belt (4) is arranged at the bottom; a diaphragm (5) is arranged on the bottom surface of the connecting belt (4); one side of the diaphragm (5) is fixedly connected to the connecting belt (4), and the other three sides are connected to the connecting belt (4) through a zipper; a film cover (6) is installed on the top of the connecting belt (4) between the front baffle (1) and the rear baffle (2), and the film cover (6) is transparent; an exhaust fan (7) is installed on the side of the front baffle (1) away from the filter assembly, and the exhaust fan (7) is connected to the filter assembly through the air intake port (3).

2. A cabin air purification and filtering device according to claim 1, characterized in that: The filter assembly comprises a filter box (8), and the filter box (8) is arranged in a cylindrical shape; a plug tube (9) is fixedly connected to one side of the filter box (8), and the plug tube (9) extends into the interior of the filter box (8); an air hole (10) is provided at the center of the end surface of the filter box (8) at one end of the filter box (8) away from the plug tube (9), and a gauze is fixedly connected to the air hole (10); a support plate (11) is fixedly connected to one end of the plug tube (9) inside the filter box (8), and the support plate (11) is arranged in a circular shape; a filter pad (12) is fixedly connected between the support plate (11) and the inner wall of the filter box (8), and the filter pad (12) is arranged in an annular shape; the inner diameter of the filter pad (12) is consistent with the air hole (10), and the outer diameter of the filter pad (12) is consistent with the diameter of the support plate (11); a through groove (13) is provided between the side surface of the plug tube (9) and the interior of the filter box (8).

3. A cabin air purification and filtering device according to claim 2, characterized in that: An annular membrane (29) is fixedly connected to the inner wall of the air inlet (3); the inner diameter of the annular membrane (29) is consistent with the insertion tube (9); an extrusion cover (30) is rotatably connected to the inner wall of the air inlet (3); and the extrusion cover (30) is threadedly connected to the insertion tube (9).

4. A cabin air purification and filtering device according to claim 3, characterized in that: The extrusion cover (30) is provided with a groove (31) on one side close to the filter box (8), and the groove (31) is arranged in an annular shape; an annular plate (32) is fixedly connected to the surface of the filter box (8) at a position corresponding to the groove (31), and the annular plate (32) is adapted to the groove (31).

5. A cabin air purification and filtering device according to claim 4, characterized in that: A pair of connection boxes (33) are fixedly connected to the bottom of the front baffle (1) and the rear baffle (2) on the side away from each other; a pull plate (34) is slidably connected inside the connection box (33); a spring (35) is fixedly connected between the pull plate (34) and the inner wall of the connection box (33); and a hook (36) is fixedly connected to one end of the pull plate (34) outside the connection box (33).

6. The cabin air purification and filtering device according to claim 1, characterized in that: The telescopic assembly comprises a plurality of sleeves (14); the diameters of the plurality of sleeves (14) decrease in sequence, and the plurality of sleeves (14) are sleeved together in sequence according to the diameters; both ends of the plurality of sleeves (14) are fixedly connected with threaded tubes (15), and the threaded tubes (15) have the same diameter as the sleeves (14) to which they are fixed; threads are provided on the inner and outer sides of the threaded tubes (15), and two adjacent threaded tubes (15) can be threadedly connected.

7. A cabin air purification and filtering device according to claim 6, characterized in that: The side surface of the sleeve (14) is fixedly connected with a connecting ring (16); the surface of the diaphragm (5) is fixedly connected with a plurality of evenly arranged connecting rods (17); the connecting rods (17) are arranged in an arc-shaped structure; one end of the connecting rod (17) is provided with a sliding hole (18), the sliding hole (18) is slidably connected to the telescopic rod, and the diameter of the sliding hole (18) is smaller than the outer diameter of the connecting ring (16).

8. The cabin air purification and filtering device according to claim 1, characterized in that: The surface of the diaphragm (5) is fixedly connected to an operating tube 1 (19) between the paired connecting rods (17); the surface of the rear baffle (2) is fixedly connected to a pair of operating tubes 2 (20) at the bottom of the air inlet (3); the surfaces of the operating tube 1 (19) and the operating tube 2 (20) are both provided with a blocking film (21); the blocking film (21) is connected to the operating tube 1 (19) and the operating tube 2 (20) via a zipper.

9. A cabin air purification and filtering device according to claim 8, characterized in that: The inner walls of the operating tube 1 (19) and the operating tube 2 (20) are both fixedly connected with a connecting seat (22); the connecting seat is arranged in an annular structure and is made of elastic material; an annular groove (23) is provided on the surface of the connecting seat (22); the annular groove (23) is arranged in a constricted shape; a fixing ring (24) is arranged in the annular groove (23).

10. A cabin air purification and filtering device according to claim 9, characterized in that: A rotating seat (25) is fixedly connected to the side of the operating tube (19) and the operating tube (20) away from the blocking membrane (21); a cover plate (27) is rotatably connected to the surface of the rotating seat (25), and a torsion spring is installed at the rotation connection between the cover plate (27) and the rotating seat (25); and magnet blocks (28) are fixedly connected to the inner walls of the operating tube (19) and the operating tube (20) at the edge of the cover plate (27) and are arranged opposite to each other.

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