Air filtering device of medical oxygen generator

Abstract

The utility model discloses an air filtering device of a medical oxygen generator. The air filtering device comprises a filtering shell and a cleaning mechanism, uniformly distributed slots are formed in the inner wall of the filter shell, a filter plate I, a filter plate II and a molecular sieve are respectively mounted in the filter shell, and the filter plate I, the filter plate II and the molecular sieve are all inserted into the adjacent slots; the filter plate I, the filter plate II and the molecular sieve are arranged in the filter shell, the cleaning mechanism is arranged in the filter shell, the cleaning mechanism and the filter plate I, the filter plate II and the molecular sieve are installed in a matched mode, and handles are arranged on the outer cambered surface of the filter plate I, the outer cambered surface of the filter plate II and the outer cambered surface of the molecular sieve. According to the medical oxygen generator air filtering device, filtering hole blocking cleaning can be automatically and synchronously conducted on multi-stage air filtering parts of a medical oxygen generator, the air filtering rate of the medical oxygen generator through the device is effectively increased, meanwhile, the filtering parts are fixed through elastic insertion, and later replacement is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtration, in particular to an air filtration device of a medical oxygen concentrator. Background Art

[0002] Medical oxygen concentrators, a common type is the pressure swing adsorption oxygen concentrator, which uses pressure swing adsorption technology to produce oxygen and can extract oxygen from the air. When the medical oxygen concentrator prepares oxygen, it is necessary to filter the impurities in the drawn air. When some air filtration devices are used, a multi-stage filter plate is installed inside the device. The multi-stage filter plate can perform multi-stage filtration on the air inhaled by the medical oxygen concentrator to improve the filtration effect. However, when the filter plate is installed inside the air filtration device and used for a long time, the filter holes on the surface of the air filter plate are easily blocked by impurities, affecting the air filtration effect of the device for medical oxygen production, which needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an air filter device for a medical oxygen concentrator. The device can automatically and synchronously clean the filter hole blockages of the multi-stage air filter parts of the medical oxygen concentrator through a transmission element and with the help of air gas flow force, thereby effectively improving the air filtering rate of the device for the medical oxygen concentrator. At the same time, the filter parts are fixed by elastic plug-in, which is convenient for later replacement, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air filter device for a medical oxygen concentrator, comprising a filter housing and a cleaning mechanism;

[0005] Filter housing: Its inner wall is provided with evenly distributed slots, and filter plate 1, filter plate 2 and molecular sieve are installed inside the filter housing respectively, and filter plate 1, filter plate 2 and molecular sieve are plugged into adjacent slots;

[0006] Cleaning mechanism: It is arranged inside the filter shell. The cleaning mechanism is installed in conjunction with filter plate 1, filter plate 2 and molecular sieve respectively. The device can automatically and synchronously clean the filter hole blockage of the multi-stage air filter part of the medical oxygen concentrator through the transmission element and with the help of air gas flow force, effectively improving the air filtration rate of the device for the medical oxygen concentrator. At the same time, the filter part is fixed by elastic plug-in, which is convenient for later replacement.

[0007] Furthermore, the outer arc surfaces of the filter plate 1, the filter plate 2 and the molecular sieve are all provided with handles, which facilitate the extraction of the filter plate 1, the filter plate 2 and the molecular sieve from the corresponding grooves.

[0008] Furthermore, the cleaning mechanism includes a cross, a rotating shaft 1 and a brush plate. The cross is arranged inside the filter shell. The middle part of the cross is rotatably connected to the rotating shaft 1 through a bearing. The upper end of the rotating shaft 1 is provided with a brush plate. The filter plate 1, the filter plate 2 and the molecular sieve are installed in cooperation with the adjacent brush plates to clean the filter holes in the air filter part of the medical oxygen generator.

[0009] Furthermore, the cleaning mechanism also includes a connecting seat, a rotating shaft 2, a rotating shaft 3, a bevel gear 1 and a bevel gear 2. The rotating shaft 3 is rotatably connected to the wall of the filter shell through a bearing. The inner wall of the filter shell is provided with evenly distributed avoidance grooves. The inner wall of the filter shell is provided with evenly distributed connecting seats. The front ends of the connecting seats are rotatably connected to the rotating shaft 2 through bearings. The left end of the rotating shaft 2 and the outer side of the rotating shaft 3 are provided with evenly distributed bevel gear 1. The bevel gear 1 is located in adjacent avoidance grooves. Two adjacent bevel gears 1 are meshed together. The right end of the rotating shaft 2 and the upper end of the rotating shaft 1 are provided with bevel gear 2. Two adjacent bevel gears 2 are meshed together, so that the brush plates at the air filter part of the medical oxygen generator rotate simultaneously.

[0010] Furthermore, the cleaning mechanism also includes a driving fan blade, which is arranged at the lower end of the lowest rotating shaft 1 to provide power for the device to clean the filter holes in the air filter part of the medical oxygen generator.

[0011] Furthermore, flanges are provided through the top wall and the conical bottom wall of the filter shell, and the driving fan blades are located in the flange on the lower side, which facilitates the connection of the device to a medical oxygen generator.

[0012] Furthermore, the outer side of the filter shell is provided with evenly distributed fixing seats, the right ends of the fixing seats are slidably connected with locking columns, the middle parts of the locking columns are provided with circular rings, springs are provided between the circular rings and the adjacent fixing seats, the springs are movably connected to the outer sides of the adjacent locking columns, the outer arc surfaces of the filter plate 1, the filter plate 2 and the molecular sieve are provided with locking grooves, the rear ends of the locking columns are plugged into the adjacent locking grooves and fixed by elastic plug-in, which is convenient for replacing the filter elements in the air filter part of the medical oxygen concentrator at a later stage.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the air filter device of the medical oxygen concentrator has the following advantages:

[0014] 1. During the operation of the medical oxygen concentrator, air flows from bottom to top inside the filter device, and the driving blades rotate due to the impact of the airflow, and the driving blades drive the rotation shaft 1 at the lowest end to rotate, and the rotation shaft 1 is connected by meshing between the bevel gears 2, so that the rotation shaft 2 at the lowest end rotates, and the rotation shaft 2 at the lowest end rotates through the meshing connection between the bevel gears 1, so that the rotation shaft 3 rotates, and the rotation shaft 3 makes the remaining rotation shaft 1 rotate synchronously through the same principle, and then the rotation shaft 1 synchronously drives the brush plate to rotate, so as to clean the impurities on the surface filter holes of the filtering part to avoid the filter holes from being blocked, thereby improving the oxygen-making air filtration efficiency of the device. The air filtration device of the medical oxygen concentrator can automatically and synchronously clean the filter hole blockages of the multi-stage air filtering parts of the medical oxygen concentrator through the transmission element and with the help of the air gas flow force, effectively improving the air filtration rate of the device for the medical oxygen concentrator.

[0015] 2. When replacing the air filter part of the medical oxygen concentrator, move the locking column forward and away from the adjacent locking groove, and the spring contracts to release the lateral limit of the filter plate or molecular sieve. Then, pull it out through the handle for replacement. The operation is convenient. The compression elastic force of the spring prevents relative longitudinal sliding between the locking column and the corresponding locking groove. The air filter device of the medical oxygen concentrator is fixed by elastic plug-in, which is convenient for later replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 A schematic cross-sectional view of the utility model;

[0018] Figure 3 A schematic diagram of the enlarged structure of the utility model;

[0019] Figure 4 This is an enlarged structural diagram of point B of the utility model.

[0020] In the figure: 1 filter housing, 2 filter plate 1, 3 filter plate 2, 4 molecular sieve, 5 handle, 6 flange, 7 cleaning mechanism, 71 cross, 72 rotating shaft 1, 73 brush plate, 74 connecting seat, 75 rotating shaft 2, 76 rotating shaft 3, 77 bevel gear 1, 78 bevel gear 2, 79 driving fan blade, 8 fixing seat, 9 locking column, 10 ring, 11 spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , This embodiment provides a technical solution: an air filter device for a medical oxygen concentrator, comprising a filter housing 1 and a cleaning mechanism 7;

[0023] Filter housing 1: Its inner wall is provided with evenly distributed slots, filter plate 1 2, filter plate 2 3 and molecular sieve 4 are respectively installed inside the filter housing 1, filter plate 1 2, filter plate 2 3 and molecular sieve 4 are plugged into adjacent slots, and handles 5 are provided on the outer arc surfaces of filter plate 1 2, filter plate 2 3 and molecular sieve 4, flanges 6 are penetrated through the top wall and conical bottom wall of the filter housing 1, and driving blades 79 are located in the flange 6 on the lower side, and evenly distributed fixing seats 8 are provided on the outer side of the filter housing 1, and locking columns 9 are slidably connected to the right ends of the fixing seats 8, and circular rings 10 are provided in the middle parts of the locking columns 9, and springs 11 are provided between the circular rings 10 and the adjacent fixing seats 8, and the springs 11 are movably sleeved with the outer sides of the adjacent locking columns 9, and locking grooves are provided on the outer arc surfaces of filter plate 1 2, filter plate 2 3 and molecular sieve 4, and the rear ends of the locking columns 9 are plugged into the adjacent locking grooves. First, the device is fixed to the corresponding position in the medical oxygen concentrator with bolts through the flange 6. When filtering air for the medical oxygen concentrator, firstly, the air pump of the medical oxygen concentrator is used to allow external air to enter through the flange 6 at the lower end, and the air is discharged through the flange 6 at the upper end after being filtered. When the air moves from bottom to top inside the device, the impurities in the air are first filtered step by step through the filter plate 1 2 and the filter plate 2 3, and then the nitrogen in the air is filtered through the molecular sieve to improve the oxygen purity in the filtered air, which is convenient for medical oxygen production. When replacing the air filtering part of the medical oxygen concentrator, the locking column 9 is moved forward to move it away from the adjacent locking groove, and the spring 11 is contracted, thereby releasing the lateral movement limit of the filter plate or the molecular sieve 4, and then it is pulled out by the handle 5 for replacement, which is easy to operate. The compression elastic force of the spring 11 prevents relative longitudinal sliding between the locking column 9 and the corresponding locking groove. The air filtering device of the medical oxygen concentrator has a filtering part that is fixed by elastic plugging, which is convenient for later replacement.

[0024] Cleaning mechanism 7: It is arranged inside the filter housing 1, and the cleaning mechanism 7 is respectively installed with the filter plate 1 2, the filter plate 2 3 and the molecular sieve 4. The cleaning mechanism 7 includes a cross 71, a rotating shaft 1 72 and a brush plate 73. The cross 71 is arranged inside the filter housing 1, and the middle part of the cross 71 is rotatably connected with the rotating shaft 1 72 through a bearing. The upper end of the rotating shaft 1 72 is provided with a brush plate 73. The filter plate 1 2, the filter plate 2 3 and the molecular sieve 4 are installed with the adjacent brush plates 73. The cleaning mechanism 7 also includes a connecting seat 74, a rotating shaft 2 75, a rotating shaft The third shaft 76, bevel gear one 77 and bevel gear two 78, the rotating shaft three 76 is rotatably connected to the wall of the filter housing 1 through a bearing, the inner wall of the filter housing 1 is provided with evenly distributed avoidance grooves, the inner wall of the filter housing 1 is provided with evenly distributed connecting seats 74, the front ends of the connecting seats 74 are rotatably connected to the rotating shaft two 75 through bearings, the left end of the rotating shaft two 75 and the outer side of the rotating shaft three 76 are provided with evenly distributed bevel gears one 77, the bevel gears one 77 are located in adjacent avoidance grooves, the two adjacent bevel gears one 77 are meshed and connected, the right end of the rotating shaft two 75 and the rotating shaft one The upper end of each of the two bevel gears 72 is provided with a bevel gear 2 78, and the two adjacent bevel gears 2 78 are meshed and connected. The cleaning mechanism 7 also includes a driving blade 79, which is arranged at the lower end of the lowermost rotating shaft 1 72. When the medical oxygen generator is in operation, air flows inside the device, and the driving blade 79 rotates through the impact of the airflow, and the driving blade 79 drives the lowermost rotating shaft 1 72 to rotate. The rotating shaft 1 72 is meshed and connected between the bevel gears 2 78, so that the lowermost rotating shaft 2 75 rotates. The lowermost rotating shaft 2 75 is meshed between the bevel gears 1 77. The connection causes the rotating shaft three 76 to rotate, and the rotating shaft three 76 causes the remaining rotating shaft one 72 to rotate synchronously through the same principle, and then the rotating shaft one 72 synchronously drives the brush plate 73 to rotate, so as to clean the impurities on the surface filter holes of the filtering part to avoid the filter holes from being blocked, thereby improving the oxygen-making air filtration efficiency of the device. The air filtration device of the medical oxygen concentrator can automatically and synchronously clean the filter holes of the multi-stage air filtration parts of the medical oxygen concentrator through the transmission element and with the help of the air gas flow force, thereby effectively improving the air filtration rate of the device for the medical oxygen concentrator.

[0025] The working principle of the air filter device of the medical oxygen concentrator provided by the utility model is as follows: first, the device is fixed to the corresponding position in the medical oxygen concentrator by bolts through the flange 6. When filtering the air of the medical oxygen concentrator, the air pump of the medical oxygen concentrator is first used to allow external air to enter through the flange 6 at the lower end, and the air is discharged through the flange 6 at the upper end after filtration. When the air moves from bottom to top inside the device, the impurities in the air are first filtered step by step through the filter plate 1 2 and the filter plate 2 3, and then the nitrogen in the air is filtered through the molecular sieve to improve the oxygen purity in the filtered air, so as to facilitate medical oxygen production. The air flows inside the device, and the driving blade 79 is rotated by the impact of the airflow, and the driving blade 79 drives the lowermost rotating shaft 1 72 to rotate, and the rotating shaft 1 72 passes through the bevel gear 2 78 The meshing connection allows the lowermost rotating shaft 2 75 to rotate, and the lowermost rotating shaft 2 75 is meshedly connected between the bevel gear 1 77 to enable the rotating shaft 3 76 to rotate. The rotating shaft 3 76 uses the same principle to make the remaining rotating shaft 1 72 rotate synchronously, and then the rotating shaft 1 72 synchronously drives the brush plate 73 to rotate, so as to clean the impurities on the surface filter holes of the filtering part to avoid blockage of the filter holes, thereby improving the oxygen-generating air filtration efficiency of the device. When replacing the air filtering part of the medical oxygen generator, the locking column 9 is moved forward to move it away from the adjacent locking groove, and the spring 11 contracts, thereby releasing the lateral movement limit of the filter plate or molecular sieve 4, and then it is pulled out through the handle 5 for replacement, which is easy to operate. The compression elastic force of the spring 11 avoids relative longitudinal sliding between the locking column 9 and the corresponding locking groove.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An air filter device for a medical oxygen concentrator, characterized in that: It comprises a filter housing (1) and a cleaning mechanism (7); The filter housing (1) has slots evenly distributed on its inner wall. A filter plate 1 (2), a filter plate 2 (3) and a molecular sieve (4) are respectively installed inside the filter housing (1). The filter plate 1 (2), the filter plate 2 (3) and the molecular sieve (4) are all plugged into adjacent slots. Cleaning mechanism (7): it is arranged inside the filter shell (1), and the cleaning mechanism (7) is installed in cooperation with the filter plate 1 (2), the filter plate 2 (3) and the molecular sieve (4).

2. The air filter device for a medical oxygen concentrator according to claim 1, characterized in that: The outer arc surfaces of the filter plate 1 (2), the filter plate 2 (3) and the molecular sieve (4) are all provided with handles (5).

3. The air filter device for a medical oxygen concentrator according to claim 1, characterized in that: The cleaning mechanism (7) comprises a cross (71), a rotating shaft (72) and a brush plate (73); the cross (71) is arranged inside the filter housing (1); the middle part of the cross (71) is rotatably connected to the rotating shaft (72) via a bearing; the upper end of the rotating shaft (72) is provided with a brush plate (73); the filter plate (2), the filter plate (3) and the molecular sieve (4) are mounted in cooperation with adjacent brush plates (73).

4. The air filter device for a medical oxygen concentrator according to claim 3, characterized in that: The cleaning mechanism (7) further comprises a connecting seat (74), a second rotating shaft (75), a third rotating shaft (76), a first bevel gear (77) and a second bevel gear (78); the third rotating shaft (76) is rotatably connected to the wall of the filter housing (1) via a bearing; the inner wall of the filter housing (1) is provided with evenly distributed avoidance grooves; the inner wall of the filter housing (1) is provided with evenly distributed connecting seats (74); the front ends of the connecting seats (74) are rotatably connected to the second rotating shaft (75) via a bearing; the left end of the second rotating shaft (75) and the outer side of the third rotating shaft (76) are both provided with evenly distributed first bevel gears (77); the first bevel gears (77) are both located in adjacent avoidance grooves; two adjacent first bevel gears (77) are both meshedly connected; the right end of the second rotating shaft (75) and the upper end of the first rotating shaft (72) are both provided with second bevel gears (78); the two adjacent second bevel gears (78) are both meshedly connected.

5. The air filter device for a medical oxygen concentrator according to claim 3, characterized in that: The cleaning mechanism (7) further comprises a driving fan blade (79), wherein the driving fan blade (79) is arranged at the lower end of the lowermost rotating shaft 1 (72).

6. The air filter device for a medical oxygen concentrator according to claim 5, characterized in that: A flange (6) is provided through the top wall and the conical bottom wall of the filter housing (1), and the driving blade (79) is located inside the flange (6) at the lower side.

7. The air filter device for a medical oxygen concentrator according to claim 1, characterized in that: The outer side of the filter housing (1) is provided with evenly distributed fixing seats (8), the right ends of the fixing seats (8) are slidably connected with locking columns (9), the middle parts of the locking columns (9) are provided with circular rings (10), springs (11) are provided between the circular rings (10) and the adjacent fixing seats (8), the springs (11) are movably sleeved with the outer sides of the adjacent locking columns (9), the outer arc surfaces of the filter plate 1 (2), the filter plate 2 (3) and the molecular sieve (4) are provided with locking grooves, and the rear ends of the locking columns (9) are plugged into the adjacent locking grooves.

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