Magnetic buffering type air filter
By combining magnetic buffering design and elastic parts in the air filter, the rust problem caused by spring aging is solved, and a more effective filter element buffering and air filtration effect is achieved.
Patent Information
- Application Number
- CN202421592779.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-05
AI Technical Summary
In existing air filters, springs are prone to aging and wear after long-term use, especially in water-containing environments, rust and aging of the springs lead to rust, affecting the air filtration effect.
The magnetic buffering type design is adopted, and the first magnet and the second magnet are repulsively arranged, combined with the use of elastic members, to provide more effective buffering and sealing to avoid rust.
The damage of the filter element when impacted by compressed air will extend its service life, improve the quality and efficiency of air filtration, and avoid rust problems caused by spring aging.
Smart Images
Figure CN222823332U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a magnetic buffer type air filter, belonging to the technical field of air filters. Background Art
[0002] The air filter is an air filtration device used to purify the intake air of internal combustion engines, etc. The structure of the air filter is similar to that of the oil filter, and generally includes a housing, a filter element, a housing cover, an air inlet pipe, an air outlet pipe, a core tube, a hose, a buffer spring, and a bypass valve, etc. The outside air is pressurized and enters the inner cavity of the housing through the air inlet pipe. After being filtered by the filter element, it enters the core tube. The inner wall of the core tube is provided with air holes for gas exchange with the filter element. The filtered air is output after passing through the core tube, the hose, and the air outlet pipe.
[0003] The setting of the buffer spring can effectively buffer the filter element when it is impacted by compressed air, and it is not easy to cause the filter element to be damaged.
[0004] When the filter element is clogged, the air pressure in the casing rises to a certain level, the bypass valve opens, and the compressed air in the casing enters the core tube through the bypass valve and is finally output from the outlet pipe.
[0005] Since existing air filters usually use spring buffers, the bypass valve is also driven by a spring; the spring is prone to aging and wear after long-term use, especially when the outside air contains water. The spring is constantly expanding and contracting for a long time, rusting, and aging to a certain extent, it is easy to produce a lot of rust, which is not conducive to air filtering.
[0006] Based on this, the present utility model is proposed. Utility Model Content
[0007] The utility model aims at the deficiencies of the prior art and provides a magnetic buffer air filter. The specific technical scheme is as follows:
[0008] A magnetic buffer air filter comprises a casing, a filter element located inside the casing, and a casing cover located at the upper end of the casing, wherein a lower support plate is installed at the lower end of the filter element, an upper support plate is installed at the upper end of the filter element, an air inlet pipe and an air outlet pipe are arranged on one side of the casing cover, a core pipe is arranged in the center of the filter element, a hose connected with the core pipe is arranged in the center of the upper end of the filter element, the air outlet pipe is connected with the hose, an open groove is arranged at the lower end of the casing cover, the air inlet pipe is connected with the inner cavity of the casing via the open groove, sliding blocks adapted to the inner wall of the casing are fixedly installed on the outer periphery of the upper support plate and the outer periphery of the lower support plate, a first annular magnet is fixedly installed below the lower support plate, and a second annular magnet arranged to repel the first magnet is fixedly installed at the bottom of the casing.
[0009] A further improvement is that an elastic member is also arranged between the first magnet and the second magnet, and the elastic member includes a conical elastic cone disk, the upper end of the elastic cone disk is provided with a circular upper cone mouth, the lower end of the elastic cone disk is fixedly connected to the edge of the second magnet, and the lower part of the elastic cone disk is provided with a plurality of circular first through holes, a long slit is connected between the first through hole and the upper cone mouth, an elastic sheet is provided between two adjacent long slits, and at least one step structure is provided on the elastic sheet.
[0010] As a further improvement, the cone angle of the elastic cone disk is 159° to 168°.
[0011] As a further improvement, a bypass valve is provided inside the lower end of the core tube, and a circular second through hole is provided in the center of the lower support plate.
[0012] As a further improvement, the inner diameter of the first magnet is larger than the diameter of the second through hole.
[0013] A further improvement is that the bypass valve includes a circular third magnet, a circular first film, a circular second film, and a circular fourth magnet arranged to be attracted to the third magnet, a gap is arranged between the outer periphery of the third magnet and the inner wall of the core tube, a support plate is installed at the second through hole, the third magnet is fixedly connected to the support plate, the first film is arranged above the third magnet and the first film is fixedly connected to the third magnet, a gap is arranged between the outer periphery of the first film and the inner wall of the core tube, the outer periphery of the second film is sealed to the inner wall of the core tube, a circular third through hole is arranged in the center of the second film, the second film is arranged above the first film, the fourth magnet is arranged above the second film, and there is a gap fit between the outer periphery of the fourth magnet and the inner wall of the core tube.
[0014] As a further improvement, the inner diameter of the fourth magnet is larger than the diameter of the third through hole.
[0015] As a further improvement, the second film and the first film are clamped and sealed by a fourth magnet and a third magnet.
[0016] As a further improvement, a circular zone of uniform thickness is provided in the center of the first film, and the thickness at any two points on the zone of uniform thickness is equal; a zone of gradual thickness change is provided between the zone of uniform thickness in the first film and the edge of the first film, and the zone of gradual thickness change is in the shape of a circular ring, and the thickness at the outer circle of the zone of gradual thickness change is less than the thickness at the inner circle of the zone of gradual thickness change.
[0017] Beneficial effects of the utility model:
[0018] 1. The magnetic buffer air filter optimizes the structure of the existing air filter and sets the first magnet and the second magnet to repel each other, so that the filter element can be well buffered when impacted by compressed air, and it is not easy to cause the filter element to be damaged.
[0019] 2. By adding elastic parts, the elastic parts can provide buffering when the magnetism is lost or the impact force is too large.
[0020] 3. The newly designed bypass valve has a simple structure, small size and small installation space. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the magnetic buffer type air filter of the utility model;
[0022] Figure 2 It is a schematic diagram of the interior of the elastic member of the utility model;
[0023] Figure 3 It is a schematic diagram of the structure of the elastic member of the utility model when viewed from above;
[0024] Figure 4 This is a schematic diagram of the structure of the bypass valve of the utility model;
[0025] Figure 5 This is a schematic diagram of the structure of the first film of the utility model. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0027] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] Example 1
[0030] like Figure 1 As shown, the magnetic buffer air filter includes a casing 10, a filter element 11 located inside the casing 10, and a shell cover 60 located at the upper end of the casing 10, a lower support plate 12 is installed at the lower end of the filter element 11, an upper support plate 13 is installed at the upper end of the filter element 11, an air inlet pipe 30 and an air outlet pipe 40 are arranged on one side of the shell cover 60, a core tube 111 is arranged in the center of the filter element 11, a hose 16 connected to the core tube 111 is arranged in the center of the upper end of the filter element 11, the air outlet pipe 40 is connected to the hose 16, an open groove is arranged at the lower end of the shell cover 60, and the air inlet pipe 30 is connected to the inner cavity of the casing 10 through the open groove.
[0031] The housing 10, filter element 11, housing cover 60, lower support plate 12, upper support plate 13, air inlet pipe 30, air outlet pipe 40, core pipe 111 and hose 16 are all prior art and will not be described in detail here.
[0032] In this embodiment, the outside air is pressurized and enters the open groove through the air inlet pipe 30, then enters the inner cavity of the casing 10, and after being filtered by the filter element 11, enters the core tube 111. The inner wall of the core tube 111 is provided with multiple air holes. The filtered air is output after passing through the core tube 111, the hose 16 and the air outlet pipe 40.
[0033] The key improvements of this utility model are:
[0034] The outer periphery of the upper support plate 13 and the outer periphery of the lower support plate 12 are fixedly mounted with sliders 14 adapted to the inner wall of the casing 10, a first annular magnet 15 is fixedly mounted below the lower support plate 12, and a second annular magnet 18 that is arranged to repel the first magnet 15 is fixedly mounted at the bottom of the casing 10.
[0035] The arrangement of the slider 14 allows sufficient space between the filter element 11 and the inner wall of the housing 10, thereby facilitating subsequent filtering.
[0036] The first magnet 15 and the second magnet 18 are arranged to repel each other, so that the filter element 11 can be well buffered when impacted by compressed air, and the filter element 11 is not easily damaged.
[0037] Example 2
[0038] Although buffering can be achieved by only using the first magnet 15 and the second magnet 18 to repel each other, considering the demagnetization under extreme conditions and the excessive impact force causing the first magnet 15 and the second magnet 18 to collide with each other, Figures 1 to 3 As shown, an elastic member 20 is further provided between the first magnet 15 and the second magnet 18, and the elastic member 20 includes a conical elastic cone disk 21, and a circular upper cone opening 24 is provided at the upper end of the elastic cone disk 21, and the lower end of the elastic cone disk 21 is fixedly connected to the edge of the second magnet 18, and a plurality of circular first through holes 22 are provided at the lower part of the elastic cone disk 21, and a long slit 23 is connected between the first through hole 22 and the upper cone opening 24, and an elastic sheet 26 is provided between two adjacent long slits 23, and at least one step structure 25 is provided on the elastic sheet 26.
[0039] When the magnetism is lost or the impact force is too large, the first magnet 15 moves downward along with the filter element 11 and then hits the elastic member 20 , where it is further buffered.
[0040] In the elastic member 20, the cone angle of the elastic cone disk 21 is 159° to 168°. This makes the overall height of the elastic member 20 not too high, but it still has good elasticity; the elasticity of the elastic member 20 mainly depends on the multiple elastic sheets 26. The number of step structures 25 can be set as needed.
[0041] In this embodiment, since the first magnet 15 and the second magnet 18 are mainly relied on, the elastic member 20 is used as a backup and is less frequently used; therefore, no matter whether the elastic member 20 is made of copper alloy or elastic plastic, it is not easy to age and the degree of wear is much lower than that of the spring. Therefore, the service life is significantly longer than that of the spring.
[0042] Example 3
[0043] like Figure 1 , 4 As shown in FIG. 5 , a bypass valve 50 is disposed inside the lower end of the core tube 111, and a circular second through hole is disposed in the center of the lower support plate 12. The inner diameter of the first magnet 15 is larger than the diameter of the second through hole.
[0044] The bypass valve 50 includes a circular third magnet 51, a circular first film 53, a circular second film 55, and a circular fourth magnet 54 attracted to the third magnet 51. A gap is provided between the outer periphery of the third magnet 51 and the inner wall of the core tube 111. A support plate 52 is installed at the second through hole. The third magnet 51 is fixedly connected to the support plate 52. The first film 53 is arranged above the third magnet 51 and the first film 53 is fixedly connected to the third magnet 51. A gap is provided between the outer periphery of the first film 53 and the inner wall of the core tube 111. The outer periphery of the second film 55 is sealed and connected to the inner wall of the core tube 111. A circular third through hole 551 is provided in the center of the second film 55. The second film 55 is arranged above the first film 53. The fourth magnet 54 is arranged above the second film 55. There is a gap fit between the outer periphery of the fourth magnet 54 and the inner wall of the core tube 111.
[0045] The inner diameter of the fourth magnet 54 is larger than the diameter of the third through hole 551. A circular uniform thickness area 531 is provided in the center of the first film 53, and the thickness at any two points on the uniform thickness area 531 is equal; a thickness gradient area 532 is provided between the uniform thickness area 531 in the first film 53 and the edge of the first film 53, and the thickness gradient area 532 is annular, and the thickness at the outer circle of the thickness gradient area 532 is smaller than the thickness at the inner circle of the thickness gradient area 532, that is, the thickness of the thickness gradient area 532 is gradually increased in the direction from the outer circle of the thickness gradient area 532 to its inner circle.
[0046] In normal state, the second film 55 and the first film 53 are clamped and sealed by the fourth magnet 54 and the third magnet 51. At this time, the bypass valve 50 is in a closed state.
[0047] Since the outer circle of the thickness gradient zone 532 is thin and the inner circle is thick, and the thickness of the second film 55 is uniform, and the spacing between the third magnet 51 and the fourth magnet 54 is uniform, when the air pressure below the first film 53 is too high, it can enter from the small gap between the edge of the first film 53 and the second film 55. Finally, the air pressure exceeding the threshold will break through the gap between the second film 55 and the first film 53 and enter the interior of the core tube 111 from the third through hole 551. At this time, the bypass valve 50 is in an open state. When the air pressure below the first film 53 decreases to below the threshold, the seal can still be restored under the magnetic clamping between the fourth magnet 54 and the third magnet 51.
[0048] When the filter element 11 is clogged, the air pressure in the casing 10 increases to a certain level, and the bypass valve 50 opens. The compressed air in the casing 10 enters the core tube 111 through the bypass valve 50 and is finally output from the air outlet pipe 40 .
[0049] The bypass valve 50 in this embodiment has a simple structure, a small volume, and requires a small installation space.
[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A magnetic buffer type air filter, comprising a housing (10), a filter element (11) located inside the housing (10), and a housing cover (60) located at the upper end of the housing (10), wherein a lower support plate (12) is installed at the lower end of the filter element (11), an upper support plate (13) is installed at the upper end of the filter element (11), an air inlet pipe (30) and an air outlet pipe (40) are arranged on one side of the housing cover (60), a core pipe (111) is arranged at the center of the filter element (11), a hose (16) connected to the core pipe (111) is arranged at the center of the upper end of the filter element (11), the air outlet pipe (40) is connected to the hose (16), an open groove is arranged at the lower end of the housing cover (60), and the air inlet pipe (30) is connected to the inner cavity of the housing (10) through the open groove, characterized in that: Slide blocks (14) adapted to the inner wall of the casing (10) are fixedly mounted on the outer peripheries of the upper support plate (13) and the lower support plate (12); a first annular magnet (15) is fixedly mounted below the lower support plate (12); and a second annular magnet (18) is fixedly mounted at the bottom of the casing (10) and is arranged to repel the first magnet (15).
2. A magnetic buffer air filter according to claim 1, characterized in that: An elastic member (20) is also provided between the first magnet (15) and the second magnet (18), the elastic member (20) comprising a conical elastic cone disk (21), the upper end of the elastic cone disk (21) being provided with a circular upper cone opening (24), the lower end of the elastic cone disk (21) being fixedly connected to the edge of the second magnet (18), a plurality of circular first through holes (22) being provided at the lower part of the elastic cone disk (21), a long slit (23) being connected between the first through hole (22) and the upper cone opening (24), an elastic sheet (26) being provided between two adjacent long slits (23), and at least one step structure (25) being provided on the elastic sheet (26).
3. A magnetic buffer air filter according to claim 2, characterized in that: The cone angle of the elastic cone disk (21) is 159° to 168°.
4. A magnetic buffer air filter according to claim 1, characterized in that: A bypass valve (50) is provided inside the lower end of the core tube (111), and a circular second through hole is provided in the center of the lower support plate (12).
5. A magnetic buffer type air filter according to claim 4, characterized in that: The inner diameter of the first magnet (15) is greater than the diameter of the second through hole.
6. A magnetic buffer air filter according to claim 4, characterized in that: The bypass valve (50) comprises a circular third magnet (51), a circular first film (53), a circular second film (55), and a circular fourth magnet (54) arranged to attract the third magnet (51), a gap is arranged between the outer periphery of the third magnet (51) and the inner wall of the core tube (111), a support plate (52) is installed at the second through hole, the third magnet (51) is fixedly connected to the support plate (52), the first film (53) is arranged above the third magnet (51), and the first film (53) is attracted to the third magnet (51). The magnet (51) is fixedly connected, a gap is arranged between the outer periphery of the first film (53) and the inner wall of the core tube (111), the outer periphery of the second film (55) is sealedly connected to the inner wall of the core tube (111), a circular third through hole (551) is arranged at the center of the second film (55), the second film (55) is arranged above the first film (53), the fourth magnet (54) is arranged above the second film (55), and a gap is fitted between the outer periphery of the fourth magnet (54) and the inner wall of the core tube (111).
7. A magnetic buffer air filter according to claim 6, characterized in that: The inner diameter of the fourth magnet (54) is greater than the diameter of the third through hole (551).
8. A magnetic buffer air filter according to claim 6, characterized in that: The second film (55) and the first film (53) are clamped and sealed by the fourth magnet (54) and the third magnet (51).
9. A magnetic buffer type air filter according to claim 6, characterized in that: A circular uniform thickness zone (531) is arranged in the center of the first film (53), and the thicknesses at any two points on the uniform thickness zone (531) are equal; a thickness gradient zone (532) is provided between the uniform thickness zone (531) in the first film (53) and the edge of the first film (53), and the thickness gradient zone (532) is in the shape of a circular ring, and the thickness at the outer circle of the thickness gradient zone (532) is smaller than the thickness at the inner circle of the thickness gradient zone (532).