Air filter device for oxygen generator

Abstract

The present invention relates to the technical field of air filtration, and specifically discloses an air filtration device for an oxygen concentrator, comprising a shell, and also comprising: a filter element and a plurality of blades, wherein the filter element is rotatably mounted inside the shell, and the plurality of blades are equidistantly fixed on the outside of the filter element; a cavity and an air inlet pipe, wherein the cavity is fixed on one side of the shell, and the air inlet pipe is fixed on the outside of the cavity; a closure member and a movable pipe, wherein the closure member is mounted on the open end of the cavity, the closure member separates the cavity and the shell, and the movable pipe is fixed in the closure member; a driving mechanism, wherein the driving mechanism is mounted on the bottom of the filter element, the filter element rotates and drives the closure member to move longitudinally through the driving mechanism, and the airflow can drive the filter element to rotate when entering the filter element, and the actual position of the air inlet is changed through the rotational force of the filter element, so that the airflow can act on the filter element more evenly, and avoid the situation where the airflow acts continuously in the same area of ​​the filter element, resulting in local blockage and local damage of the filter element.

Description

Technical Field

[0001] The invention relates to the technical field of air filtration, in particular to an air filtration device for an oxygen generator. Background Art

[0002] In the field of modern medicine and home health care, oxygen generators, as an important medical device, are increasingly receiving widespread attention. Among them, molecular sieve oxygen production technology stands out for its high efficiency and energy saving, and has become one of the mainstream ways to produce high-purity oxygen. The working principle of molecular sieve oxygen generators is based on advanced physical adsorption and desorption technology. Through specific molecular sieve materials, it can accurately separate nitrogen and oxygen in the air, thereby extracting high-concentration oxygen for people to use.

[0003] However, it is worth noting that although air is one of the most abundant natural resources on earth, it is not completely pure. Air is often mixed with various pollutants, such as tiny dust particles, harmful oil pollution, and possible microorganisms such as bacteria and viruses. If these pollutants enter the oxygen production system without being treated, they will not only reduce the purity of oxygen, but also pose a potential threat to the health of users.

[0004] Therefore, in the process of molecular sieve oxygen production, air filtration is particularly important. Oxygen generators are usually equipped with efficient air filter systems. These filters are made of precision filter materials and can effectively intercept and remove pollutants such as dust and oil in the air, ensuring that the air entering the molecular sieve is as pure as possible. This pre-filtration step not only improves the quality of the final oxygen produced, but also extends the service life of the molecular sieve and reduces the maintenance cost of the equipment.

[0005] However, when the existing air filter device is filtering, unfiltered air enters the interior of the filter device from the intake pipe, and the airflow flows along a certain path and forms a certain distribution on the filter element. Since the positions of the intake pipe and the filter element are fixed, the filter element close to the intake pipe bears more filtering tasks for a long time, resulting in a larger amount of pollutant deposition in this area, which is more prone to blockage. Secondly, the filter element close to the intake pipe is subjected to the impact of airflow for a long time, which can easily cause wear of the filter element in this area, affecting the service life of the filter element.

[0006] For this reason, we propose an oxygen concentrator air filtering device. Summary of the invention

[0007] The object of the present invention is to provide an oxygen concentrator air filter device to solve the problem in the prior art that, due to the fixed positions of the air inlet pipe and the filter element, during filtering, air with a certain flow rate acts on a specific area of ​​the filter element, causing wear and blockage of the filter element in the area.

[0008] To achieve the above object, the present invention provides the following technical solution: an oxygen concentrator air filter device, comprising a housing, and further comprising:

[0009] A filter element and a plurality of blades, wherein the filter element is rotatably mounted inside the housing, and the plurality of blades are equidistantly fixed on the outside of the filter element;

[0010] A cavity and an air inlet pipe, wherein the cavity is fixed on one side of the shell, and the air inlet pipe is fixed on the outside of the cavity;

[0011] A closure member and a movable tube, wherein the closure member is installed at the open end of the cavity, the closure member separates the cavity from the shell, and the movable tube is fixed in the closure member;

[0012] The driving mechanism is installed at the bottom of the filter element, and the filter element rotates to drive the sealing member to move longitudinally through the driving mechanism.

[0013] The closure member is a rubber belt, a reel is installed on the top of the closure member, the closure member is wound around the outside of the reel, and a reel is installed on the bottom of the closure member, the reel rotates to reel the closure member.

[0014] A disassembly shell is fixedly installed at the bottom of the shell, the driving mechanism is installed in the disassembly shell, the driving mechanism includes a connecting piece installed at the bottom of the filter element, a transmission piece is installed at the end of the connecting piece, and the transmission piece drives the winding wheel to rotate.

[0015] Among them, the connecting part includes a block fixed at the bottom of the filter element and a connecting rod rotating at the bottom of the shell, a disc is fixedly installed on the top of the connecting rod, and a slot matching the block is opened on the top of the disc, and the filter element is installed in the slot through the block.

[0016] Among them, the transmission member includes a first bevel gear fixed at the bottom of the connecting rod, a second bevel gear is meshed on one side of the first bevel gear, the second bevel gear is rotatably installed at the bottom of the shell, a first pulley is fixed at the end of the second bevel gear, a second pulley is fixed at the end of the winding wheel, and a transmission belt is installed between the first pulley and the second pulley.

[0017] Wherein, a detection component is provided on the outside of the shell, and the detection component determines the use condition of the filter element.

[0018] Wherein, the detection part is a scale line, and the scale line is sprayed on the outer side of the sealing part.

[0019] Among them, the detection part includes a first screw fixed at the bottom of the connecting rod, the outer side of the first screw is threadedly connected with a threaded sleeve, a buzzer is arranged at the bottom of the threaded sleeve, and limit rods are slidably installed on both sides of the threaded sleeve, and the bottom of the limit rod is fixed inside the disassembly shell.

[0020] A pollutant detector is installed on the outside of the intake pipe, and an adjusting member is installed in the transmission member. The adjusting member adjusts the transmission ratio between the first pulley and the second pulley according to the degree of air pollution to change the moving speed of the connecting pipe.

[0021] The end of the second pulley is provided with a mounting frame, a slider is fixedly mounted on the top of the mounting frame, a slide rail is fixedly mounted on the bottom of the housing, the mounting frame is mounted in the slide rail through the slider, a spring is provided inside the slide rail, one end of the spring is fixed to the end of the slider, and the other end of the spring is fixed inside the slide rail;

[0022] The adjusting member includes an adjusting wheel arranged between the first pulley and the second pulley, the transmission belt is located on the outside of the adjusting wheel, a connecting frame is rotatably installed on the shaft end of the adjusting wheel, the connecting frame is slidably installed inside the disassembly shell, a second screw is rotatably installed on the bottom of the connecting frame, and the second screw is threadedly connected to the bottom of the disassembly shell.

[0023] The present invention has at least the following beneficial effects:

[0024] When the airflow enters the filter element, it can drive the filter element to rotate, and the actual position of the air inlet is changed through the rotational force of the filter element, so that the airflow can act on the filter element more evenly, avoiding continuous action on the same area of ​​the filter element, resulting in local blockage and local damage to the filter element. Secondly, when the filter element rotates, it can use its own centrifugal force to remove pollutants attached to the outside of the filter element, thereby ensuring the use effect of the filter element. Finally, the fatigue of the filter element can be judged according to the position of the airflow acting on the filter element, and the filter element can be replaced more accurately and timely according to the fatigue, thereby further improving the use effect of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the housing of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the connecting piece of the present invention;

[0029] Figure 5This is a schematic diagram of the bottom structure of the housing of the present invention;

[0030] Figure 6 It is a schematic diagram of the transmission structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the second pulley installation structure of the present invention;

[0032] Figure 8 This is a schematic structural diagram of a first embodiment of a detection element of the present invention;

[0033] Fig. 9 This is a schematic structural diagram of a second embodiment of the detection element of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the adjusting member of the present invention.

[0035] In the figure: 1. shell; 2. filter element; 3. blade; 4. cavity; 5. air inlet pipe; 6. closure; 7. movable pipe; 8. driving mechanism; 9. take-up wheel; 10. unwinding wheel; 11. disassembly shell; 12. connecting piece; 13. transmission piece; 14. block; 15. connecting rod; 16. disc; 17. slot; 18. first bevel gear; 19. second bevel gear; 20. first pulley; 21. second pulley; 22. transmission belt; 23. detection piece; 24. scale line; 25. first screw; 26. threaded sleeve; 27. buzzer; 28. limit rod; 29. ​​pollutant detector; 30. adjustment piece; 31. mounting frame; 32. slider; 33. slide rail; 34. spring; 35. adjustment wheel; 36. connecting frame; 37. second screw. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1

[0038] See also Figures 1 to 10 The present invention provides a technical solution: an oxygen concentrator air filter device, comprising: a housing 1, a filter element 2 is rotatably installed inside the housing 1, that is, the top and bottom of the filter element 2 are installed with sealed bearings, and the sealed bearings can form a relatively sealed space for the internal balls, thereby preventing the lubricating grease and dust in the balls from entering the balls, and in this embodiment, the leakage of gas can be effectively reduced.

[0039] A plurality of blades 3 are fixedly mounted on the outer wall of the filter element 2, and the plurality of blades 3 are equidistantly distributed on the outside of the filter element 2. A cavity 4 is fixedly mounted on one side of the shell 1. The cavity 4 is sealed on five sides, and the side close to the shell 1 is an opening. An air inlet pipe 5 is fixedly mounted on the side of the cavity 4. Air enters the cavity 4 through the air inlet pipe 5, and then enters the interior of the shell 1 through the cavity 4, and is filtered by the filter element 2 and then discharged from the air outlet pipe. When the air flow acts on the filter element 2, the blades 3 on the outside of the filter element 2 are blown to realize the rotation of the filter element 2.

[0040] A closing piece 6 is provided at the opening of the cavity 4, and the closing piece 6 can seal the opening of the cavity 4. At the same time, a movable tube 7 is fixedly installed on the closing piece 6. In this embodiment, the closing piece 6 is a rubber belt, and the rubber belt is slidably installed on the inner side of the cavity 4, and a reel 10 is installed on the top of the rubber belt, and a reel 9 is installed on the bottom of the rubber belt. The rubber belt wrapped around the reel 10 is reeled by the reel 9, and at the same time, the movable tube 7 on the rubber belt is driven to move longitudinally along the length direction of the cavity 4.

[0041] A driving mechanism 8 and a disassembly shell 11 are installed at the bottom of the shell 1. The driving mechanism 8 is located inside the disassembly shell 11. The disassembly shell 11 and the shell 1 are detachable. The disassembly shell 11 can be disassembled to maintain and service the internal driving mechanism 8. The driving mechanism 8 can drive the rotational force of the filter element 2 through the airflow to drive the winding wheel 9 to wind up.

[0042] Specifically, first, the driving mechanism 8 includes a connecting member 12, and the connecting member 12 includes a connecting rod 15 that rotates at the bottom of the shell 1. The filter element 2 and the connecting rod 15 are detachably installed. When the top cover of the filter element 2 is opened, the filter element 2 can be removed for cleaning and replacement. Secondly, a disc 16 is fixedly installed on the top of the connecting rod 15, and a slot 17 is provided on the top of the disc 16, and a block 14 is fixedly installed at the bottom of the filter element 2. After the filter element 2 is installed, the block 14 at the bottom of the filter element 2 can be engaged with the slot 17 on the disc 16 to achieve the installation of the filter element 2. Secondly, through the cooperation of the slot 17 and the block 14, the filter element 2 can also drive the connecting rod 15 to rotate when it rotates.

[0043] The driving mechanism 8 also includes a transmission member 13, which drives the winding wheel 9 to rotate through the rotation of the connecting rod 15, that is, a first bevel gear 18 is fixedly installed at the bottom of the connecting rod 15, and a second bevel gear 19 is meshed on one side of the first bevel gear 18. The second bevel gear 19 is rotatably installed at the bottom of the housing 1, and a first pulley 20 is fixedly installed at the end of the second bevel gear 19, and a second pulley 21 is fixedly installed at the end of the winding wheel 9, and a transmission belt 22 is installed between the first pulley 20 and the second pulley 21.

[0044] Through the above technical solution, when the airflow enters the cavity 4 from the air inlet pipe 5, the movable tube 7 on the rubber belt blows toward the filter element 2, and the filter element 2 can be driven to rotate while filtering the air. When the filter element 2 rotates, the connecting rod 15 at the bottom is driven to rotate, and when the connecting rod 15 rotates, it drives the first bevel gear 18 coaxially fixed thereto to rotate. When the first bevel gear 18 rotates, it engages with the second bevel gear 19 to drive the second bevel gear 19 to rotate. The rotation of the second bevel gear 19 synchronously drives the first pulley 20 to rotate. The rotation of the first pulley 20 drives the second pulley 21 to rotate through the transmission belt 22, thereby realizing the rotation of the winding wheel 9. When the winding wheel 9 rotates, the closing piece 6 is wound up. When the closing piece 6 is wound up, it drives the movable tube 7 to move up and down, thereby changing the position where the airflow blows toward the filter element 2.

[0045] During implementation, the movable tube 7 can be preset at the top of the cavity 4. When air blows toward the filter element 2, the movable tube 7 gradually moves downward. During this process, the position where the airflow blows toward the filter element 2 also gradually moves downward, and the filter element 2 is constantly rotating. Therefore, the airflow blowing toward the filter element 2 can act more evenly on various parts of the filter element 2, rather than continuously acting on a specific area of ​​the filter element 2. This can effectively prevent pollutants in the air from being deposited at a fixed position of the filter element 2, causing blockage of the filter element 2 at that position. In addition, it can also alleviate the impact of pollutants in the airflow on the fixed area of ​​the filter element 2, thereby increasing the service life of the filter element 2.

[0046] It should be added that, since the position of the movable tube 7 can be moved when the filter element 2 is in use, the use time of the filter element 2 can be determined according to the position of the filter element 2. For example, by adjusting the ratio between the first bevel gear 18 and the second bevel gear 19 so that the time for the movable tube 7 to move from the top to the bottom is one month, it means that the working time of the filter element 2 is one month. Under a specific working environment, the fatigue degree of the filter element 2 can be determined according to the position of the movable tube 7, and it can be more intuitive to determine whether the filter element 2 needs to be replaced or cleaned. Secondly, when the filter element 2 is filtering, the filter element 2 will rotate, and the filter element 2 will generate centrifugal force during the rotation, and the pollutants attached to the surface of the filter element 2 can be partially fallen off under the action of the centrifugal force, thereby ensuring the filtering effect of the filter element 2.

[0047] How to judge the position of the movable tube 7 can be achieved through a detection part 23 arranged on the outside of the shell 1. In a first embodiment, scale lines 24 are sprayed on the outside of the closing part 6. Therefore, when in use, when the closing part 6 is rolled up, the scale lines 24 can be referred to to judge the position of the movable tube 7.

[0048] A second implementation of the detection member 23 is that a first screw rod 25 is fixedly installed at the bottom of the connecting rod 15, and the outer side of the first screw rod 25 is threadedly connected to a threaded sleeve 26. A buzzer 27 is provided at the bottom of the threaded sleeve 26, and the bottom of the threaded sleeve 26 is aligned with the button of the buzzer 27. At the same time, limit rods 28 are slidably installed on both sides of the threaded sleeve 26, and the bottom of the limit rods 28 is fixed to the bottom of the disassembly shell 11. Therefore, when the connecting rod 15 rotates, the first screw rod 25 is driven to rotate, and the first screw rod 25 cooperates with the threaded sleeve 26 to move the threaded sleeve 26 downward. Therefore, the position of the movable tube 7 can be judged according to the extended length of the threaded sleeve 26. At the same time, when the connecting tube moves to the extreme position, the threaded sleeve 26 will trigger the button of the buzzer 27, causing the buzzer 27 to alarm, thereby reminding relevant personnel to clean or replace the filter element 2.

[0049] It should be added that the first implementation of the detection member 23 is low-cost, but requires relevant personnel to frequently check the position of the scale line 24, while the second implementation is relatively complex in structure, but can automatically alarm when the filter element 2 needs to be replaced, without the need for relevant personnel to frequently check, and is more convenient to use.

[0050] Embodiment 2

[0051] Due to different working environments, the concentration of pollutants in the air is also different. Therefore, a pollutant detector 29 is installed on the intake pipe 5, and an adjusting member 30 is set in the transmission member 13. The adjusting member 30 can adjust the transmission ratio between the first pulley 20 and the second pulley 21, that is, the transmission efficiency of the second pulley 21. Therefore, when the pollutant concentration becomes larger, the more sediments on the filter element 2 per unit time. In order to replace the filter element 2 more timely, the adjusting member 30 can be operated to increase the transmission ratio between the first pulley 20 and the second pulley 21. At this time, the moving speed of the movable tube 7 will increase, thereby reducing the replacement cycle of the filter element 2 and ensuring the normal filtering capacity of the filter element 2.

[0052] Specifically, first, the pollutant detector 29 can detect the pollutant concentration in the airflow entering the intake pipe 5 and display the detected value on the pollutant detector 29 .

[0053] Secondly, the second winding wheel 9 adopts a telescopic installation structure, that is, a mounting frame 31 is installed at the end of the second winding wheel 9, a slider 32 is fixedly installed at the bottom of the mounting frame 31, and a slide rail 33 is fixedly installed at the bottom of the shell 1. The mounting frame 31 is installed in the slide rail 33 through the slider 32, and a spring 34 is fixedly installed at the end of the slider 32. The spring 34 is located in the slide rail 33, so the second winding wheel 9 can slide in the slide rail 33 through the slider 32, and at the same time drive the spring 34 to be compressed.

[0054] Then, the adjusting member 30 includes an adjusting wheel 35 located between the first pulley 20 and the second pulley 21, and the transmission belt 22 is located on the outside of the adjusting wheel 35. At the same time, a connecting frame 36 is installed at the end of the adjusting wheel 35, and a second screw 37 is rotatably installed at the bottom of the connecting frame 36. The second screw 37 is threadedly connected in the disassembly shell 11. Under normal circumstances, the transmission belt 22 is installed on the outside of the first pulley 20, the adjusting wheel 35 and the second pulley 21. At this time, the spring 34 is in a stretched state. When the transmission ratio of the first pulley 20 and the second pulley 21 needs to be adjusted, the second screw 37 can be rotated. When the second screw 37 is rotated The height of the adjusting wheel 35 can be changed at any time, for example, when the transmission ratio needs to be increased, the adjusting wheel 35 can be adjusted upward. When the adjusting wheel 35 is adjusted upward, the contact area between the transmission belt 22 located on the outer sides of the first pulley 20 and the second pulley 21 and the two increases, that is, the transmission efficiency increases, thereby achieving the change of the rotation speed of the second pulley 21, that is, the moving speed of the movable tube 7. When the adjusting wheel 35 is adjusted upward, since the tension of the transmission belt 22 becomes smaller, the spring 34 is reset, that is, the spring 34 moves to the side away from the second pulley 21 to supplement the tension of the transmission belt 22, so as to ensure that the transmission belt 22 is always transmitted with appropriate tension.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oxygen concentrator air filter device, comprising a housing (1), characterized in that: Also includes: A filter element (2) and a plurality of blades (3), wherein the filter element (2) is rotatably mounted inside the housing (1), and the plurality of blades (3) are fixed at equal distances on the outside of the filter element (2); A cavity (4) and an air intake pipe (5), wherein the cavity (4) is fixed on one side of the housing (1), and the air intake pipe (5) is fixed on the outside of the cavity (4); a closing member (6) and a movable tube (7), wherein the closing member (6) is mounted at the open end of the cavity (4), the closing member (6) separates the cavity (4) from the housing (1), and the movable tube (7) is fixed in the closing member (6); A driving mechanism (8), the driving mechanism (8) being mounted on the bottom of the filter element (2), and the filter element (2) rotating to drive the sealing member (6) to move longitudinally through the driving mechanism (8); The closure member (6) is a rubber belt, a reel (10) is mounted on the top of the closure member (6), the closure member (6) is wound around the outside of the reel (10), and a reel (9) is mounted on the bottom of the closure member (6), the reel (9) rotates to reel up the closure member (6); A disassembly shell (11) is fixedly mounted on the bottom of the housing (1), the drive mechanism (8) is mounted in the disassembly shell (11), the drive mechanism (8) comprises a connecting member (12) mounted on the bottom of the filter element (2), a transmission member (13) is mounted on the end of the connecting member (12), and the transmission member (13) drives the winding wheel (9) to rotate; The connecting member (12) comprises a clamping block (14) fixed to the bottom of the filter element (2) and a connecting rod (15) rotatable at the bottom of the housing (1); a disc (16) is fixedly mounted on the top of the connecting rod (15); a clamping groove (17) matching the clamping block (14) is formed on the top of the disc (16); and the filter element (2) is mounted in the clamping groove (17) by means of the clamping block (14); The transmission member (13) comprises a first bevel gear (18) fixed to the bottom of the connecting rod (15); a second bevel gear (19) is meshed with one side of the first bevel gear (18); the second bevel gear (19) is rotatably mounted on the bottom of the housing (1); a first belt pulley (20) is fixed to the end of the second bevel gear (19); a second belt pulley (21) is fixed to the end of the winding wheel (9); and a transmission belt (22) is installed between the first belt pulley (20) and the second belt pulley (21); A detection component (23) is provided on the outside of the housing (1), and the detection component (23) determines the usage status of the filter element (2); A pollutant detector (29) is installed on the outside of the air intake pipe (5), and an adjusting member (30) is installed in the transmission member (13). The adjusting member (30) adjusts the transmission ratio between the first pulley (20) and the second pulley (21) according to the degree of air pollution, thereby changing the moving speed of the connecting pipe.

2. The oxygen concentrator air filter device according to claim 1, characterized in that: The detection member (23) is a scale line (24), and the scale line (24) is sprayed on the outside of the sealing member (6).

3. The oxygen concentrator air filter device according to claim 1, characterized in that: The detection member (23) comprises a first screw rod (25) fixed at the bottom of the connecting rod (15); the outer side of the first screw rod (25) is threadedly connected to a threaded sleeve (26); a buzzer (27) is provided at the bottom of the threaded sleeve (26); limiting rods (28) are slidably mounted on both sides of the threaded sleeve (26); and the bottom of the limiting rod (28) is fixed inside the disassembly shell (11).

4. The oxygen concentrator air filter device according to claim 1, characterized in that: A mounting frame (31) is installed at the end of the second pulley (21), a slider (32) is fixedly installed on the top of the mounting frame (31), a slide rail (33) is fixedly installed on the bottom of the housing (1), the mounting frame (31) is installed in the slide rail (33) through the slider (32), a spring (34) is provided inside the slide rail (33), one end of the spring (34) is fixed to the end of the slider (32), and the other end of the spring (34) is fixed inside the slide rail (33); The adjusting member (30) comprises an adjusting wheel (35) arranged between the first pulley (20) and the second pulley (21); the transmission belt (22) is located outside the adjusting wheel (35); a connecting frame (36) is rotatably mounted on the shaft end of the adjusting wheel (35); the connecting frame (36) is slidably mounted inside the disassembly shell (11); a second screw rod (37) is rotatably mounted on the bottom of the connecting frame (36); and the second screw rod (37) is threadedly connected to the bottom of the disassembly shell (11).

Images