A polymer filter

Abstract

This utility model discloses a polymer filter, relating to the field of gas filtration technology. It includes a filter body with an inlet connector on one side and an outlet connector on the other. An annular disc connects to the bottom of the filter body, and a quick-release assembly is located at the bottom of the annular disc. A housing cover is connected to the bottom of the quick-release assembly, and a filter assembly is threadedly connected to the bottom of the housing cover. The quick-release assembly includes a conical cylinder fixed to the bottom of the annular disc. Symmetrical directional holes are formed on both sides of the bottom of the conical cylinder, and springs are installed in each directional hole. One end of each spring is connected to a limiting post. This polymer filter, through the design of the limiting post and spring in the quick-release assembly, achieves the function of quickly separating the housing cover and filter assembly by pressing the limiting post, solving the problem of traditional filter replacement requiring tools and involving cumbersome procedures, thus improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas filtration technology, specifically a polymer filter. Background Technology

[0002] A gas polymer filter is a device used to filter gases, typically made of polymer materials. It is primarily used to remove impurities and contaminants from gases, ensuring their purity.

[0003] In the prior art, such as in CN217092774U, an air filtration device containing polymer gas is disclosed. It includes a condenser tank, and an auxiliary condenser device is provided inside the condenser tank. The auxiliary condenser device includes condenser blades, a rotating shaft, and a drive source. The rotating shaft is disposed inside the condenser tank and rotatably connected to the condenser tank. The rotating shaft is coaxially disposed with the condenser tank. The drive source is disposed at the top of the condenser tank to drive the rotating shaft to rotate. A plurality of condenser blades are evenly disposed on the rotating shaft.

[0004] While the aforementioned patent effectively solves the problems of low condensation efficiency and easy sedimentation of condensate in the prior art, the filter element needs to be replaced regularly during gas filtration. The filter element replacement process is relatively complicated and requires tools, which brings inconvenience to later maintenance. Moreover, the single filtration results in oil and rosin vapor remaining in the gas, and the filtration is not sufficient.

[0005] Therefore, this utility model provides a polymer filter. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a polymer filter that solves the problems of needing to replace the filter element regularly during gas filtration, which is a complex process requiring tools and causing inconvenience for later maintenance. Furthermore, the single filtration method leaves oil and rosin vapors in the gas unresolved, resulting in insufficient filtration.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a polymer filter, including a filter body, an air inlet connector on one side of the filter body, an air outlet connector on the other side, an annular disk connected to the bottom of the filter body, a quick-release assembly at the bottom of the annular disk, a cover connected to the bottom of the quick-release assembly, and a filter assembly threadedly connected to the bottom of the cover.

[0008] The quick-release assembly includes a conical cylinder fixed to the bottom of the annular disc. The bottom of the conical cylinder has symmetrically opened directional holes on both sides. A spring is installed in each directional hole. One end of the spring is connected to a limit post. A sleeve is fitted around the outer periphery of the conical cylinder. The bottom of the sleeve has symmetrically opened limit holes that are adapted to the limit posts on both sides. The bottom end of the sleeve is fixedly connected to the top of the cover.

[0009] The filter assembly includes a housing threadedly connected to a cover, a cylindrical frame fitted inside the housing, a cavity in the middle of the cylindrical frame, a cylindrical filter screen inserted into the cavity, and several filter plates arranged in a ring array around the cavity inside the cylindrical frame.

[0010] Preferably, the filter plate has a rectangular structure, and the spacing between the filter plates is equidistantly distributed along the gas flow direction.

[0011] Preferably, a sealing gasket is provided at the connection between the housing and the cover, and the sealing gasket is made of fluororubber.

[0012] Preferably, the two ends of the spring are welded to the inner wall of the directional hole and the end face of the limiting post, respectively, and the end of the limiting post has a hemispherical structure.

[0013] Preferably, the inner diameters of the conical sleeve and the shell cover are equal and coaxially connected, and the inner wall of the shell cover is clearance-fitted with the outer wall of the columnar frame.

[0014] Preferably, the surface of the filter plate is coated with an oleophobic coating, the thickness of which is less than 0.1 mm.

[0015] Beneficial effects

[0016] This invention provides a polymer filter. Compared with the prior art, it has the following advantages:

[0017] 1. This polymer filter, through the design of the limiting post and spring in the conical cylinder and sleeve of the quick-release assembly, realizes the function of quickly separating the shell cover and filter assembly by pressing the limiting post, which solves the problem of traditional filter replacement requiring tools and complicated procedures, and improves maintenance efficiency.

[0018] 2. This polymer filter, through the collaborative design of cylindrical filter screens and rectangular filter plates arranged in a ring array in the filter assembly, achieves primary interception and secondary fine filtration of oil and rosin vapor in the gas, solving the problem of insufficient efficiency of a single filter structure and improving the gas purification effect. Attached Figure Description

[0019] Figure 1 This is a three-dimensional appearance schematic diagram of the present utility model;

[0020] Figure 2 This is a three-dimensional view of the filter body of this utility model;

[0021] Figure 3 This is a three-dimensional appearance diagram of the filter assembly of this utility model;

[0022] Figure 4 This is a three-dimensional appearance diagram of the quick-release component of this utility model.

[0023] In the diagram: 1. Filter body; 2. Air inlet connector; 3. Air outlet connector; 4. Annular disc; 5. Quick-release assembly; 51. Conical cylinder; 52. Orientation hole; 53. Spring; 54. Limiting post; 55. Sleeve; 56. Limiting hole; 6. Shell cover; 7. Filter assembly; 71. Shell; 72. Columnar frame; 73. Cavity; 74. Columnar filter screen; 75. Filter plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides two technical solutions:

[0026] Figures 1-4 The first embodiment is shown: a polymer filter includes a filter body 1, an air inlet 2 is provided on one side of the filter body 1, an air outlet 3 is provided on the other side, an annular disk 4 is connected to the bottom of the filter body 1, a quick-release assembly 5 is provided at the bottom of the annular disk 4, a shell cover 6 is connected to the bottom of the quick-release assembly 5, and a filter assembly 7 is threadedly connected to the bottom of the shell cover 6; the quick-release assembly 5 includes a conical cylinder 51 fixed to the bottom of the annular disk 4, directional holes 52 are symmetrically opened on both sides of the bottom of the conical cylinder 51, a spring 53 is provided in each of the directional holes 52, one end of the spring 53 is connected to a limiting post 54, a sleeve 55 is sleeved on the outer periphery of the conical cylinder 51, a limiting hole 56 adapted to the limiting post 54 is symmetrically opened on both sides of the bottom of the sleeve 55, and the bottom end of the sleeve 55 is fixedly connected to the top of the shell cover 6.

[0027] Specifically, the conical cylinder 51 of the quick-release assembly 5 is fixed to the bottom of the annular disc 4 by a flange. A spring 53 is installed in the directional hole 52 at the bottom of the conical cylinder 51. A limiting post 54 is welded to one end of the spring 53. The hemispherical end of the limiting post 54 extends out of the outer wall of the conical cylinder 51. The sleeve 55 is sleeved on the outer circumference of the conical cylinder 51. The limiting hole 56 at the bottom of the sleeve is engaged with the limiting post 54. The sleeve 55 is fixed to the cover 6 by bolts. When the limiting post 54 is pressed, the spring 53 is compressed, causing the limiting post 54 to exit the limiting hole 56. The sleeve 55 can slide and separate along the axial direction of the conical cylinder 51, realizing the overall disassembly of the cover 6 and the filter assembly 7.

[0028] In this embodiment, the filter assembly 7 includes a housing 71 that is threadedly connected to the cover 6. A cylindrical frame 72 is fitted inside the housing 71. A cavity 73 is opened in the middle of the cylindrical frame 72. A cylindrical filter screen 74 is inserted into the cavity 73. Several filter plates 75 are arranged in a ring array around the cavity 73 inside the cylindrical frame 72.

[0029] Specifically, after the gas enters through the inlet connector 2, it first passes through the cylindrical filter screen 74 to intercept large oil particles for primary filtration. Then, the airflow diffuses outward to the rectangular filter plates 75 in the annular array. When the gas first passes through the cylindrical filter screen 74, its large surface area and open structure can quickly intercept large oil particles, dust, and some rosin vapor condensate in the gas, preventing the subsequent filter plates 75 from being blocked by large particles and reducing airflow resistance. The rectangular filter plates 75 are distributed in annular array around the cylindrical frame 72. They are made of dense polymer materials such as PTFE membranes or activated carbon composite layers, and the surface is coated with an oleophobic coating. The plate spacing is evenly distributed to form a progressive filtration channel. The dense structure of the multi-layer PTFE membrane intercepts micron-sized particles and rosin vapor for secondary filtration.

[0030] Figures 1-4 The second embodiment is shown, and the main difference from the first embodiment is that the filter plate 75 is a rectangular structure and the spacing between the filter plates 75 is equidistantly distributed along the gas flow direction.

[0031] Specifically, the rectangular structure and equidistant layout form uniform filtration channels, enhancing the interception effect of oil particles.

[0032] In this embodiment, a sealing gasket is provided at the connection between the housing 71 and the cover 6, and the sealing gasket is made of fluororubber.

[0033] Specifically, the sealing gasket is fixed to the threaded connection between the housing 71 and the cover 6 by an adhesive. The sealing gasket made of fluororubber has an O-shaped cross-section. The high corrosion resistance of the fluororubber gasket ensures gas tightness and prevents pollutant leakage.

[0034] In this embodiment, the two ends of the spring 53 are respectively welded to the inner wall of the directional hole 52 and the end face of the limiting post 54, and the end of the limiting post 54 is a hemispherical structure.

[0035] Specifically, the spring 53 is fixed to the inner wall of the directional hole 52 and the end face of the limiting post 54 by spot welding. The surface of the hemispherical end of the limiting post 54 is polished to reduce friction with the limiting hole 56. The welding of the spring 53 ensures the limiting stability.

[0036] In this embodiment, the inner diameters of the conical cylinder 51, sleeve 55, and shell cover 6 are equal and coaxially connected, and the inner wall of the shell cover 6 is clearance-fitted with the outer wall of the columnar frame 72.

[0037] Specifically, the conical cylinder 51, sleeve 55 and shell cover 6 are CNC machined to ensure consistent inner diameter and coaxiality error of less than 0.1mm. The clearance fit tolerance between the outer wall of the column frame 72 and the inner wall of the shell cover 6 is 0.5-1mm. The coaxial connection design optimizes the airflow path, and the clearance fit avoids installation interference.

[0038] In this embodiment, the surface of the filter plate 75 is coated with an oleophobic coating, the thickness of which is less than 0.1 mm.

[0039] Specifically, the oleophobic coating is uniformly applied to the surface of the filter plate 75 through a spraying process. The coating material is polytetrafluoroethylene, and the thickness is controlled between 0.05-0.08 mm. The oleophobic coating reduces oil adhesion and extends the cleaning cycle and service life of the filter plate 75.

[0040] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0041] Working principle: After the gas enters the filter body 1 through the air inlet connector 2, it first passes through the cylindrical filter screen 74 to intercept large particles of oil and dust. Then it diffuses to the rectangular filter plate 75 of the annular array for secondary fine filtration. The oleophobic coating and dense structure on the surface of the filter plate 75 adsorb rosin vapor and micron-sized impurities. For quick disassembly, press the limit post 54 to compress the spring 53 so that it exits the limit hole 56, and pull down the cover 6 to separate the sleeve 55 from the conical cylinder 51. The filter assembly 7 can then be completely disassembled and replaced, achieving quick maintenance without tools.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polymer filter, comprising a filter body (1), characterized in that: An air inlet connector (2) is provided on one side of the filter body (1), and an air outlet connector (3) is provided on the other side. An annular disc (4) is connected to the bottom of the filter body (1). A quick-release assembly (5) is provided at the bottom of the annular disc (4). A cover (6) is connected to the bottom of the quick-release assembly (5). A filter assembly (7) is threaded to the bottom of the cover (6). The quick-release assembly (5) includes a conical cylinder (51) fixed to the bottom of the annular disc (4). The bottom of the conical cylinder (51) is symmetrically provided with directional holes (52) on both sides. A spring (53) is provided in each of the directional holes (52). One end of the spring (53) is connected to a limiting post (54). A sleeve (55) is sleeved on the outer periphery of the conical cylinder (51). The bottom of the sleeve (55) is symmetrically provided with limiting holes (56) that are adapted to the limiting post (54). The bottom end of the sleeve (55) is fixedly connected to the top of the cover (6). The filter assembly (7) includes a housing (71) threadedly connected to the cover (6), a cylindrical frame (72) sleeved inside the housing (71), a cavity (73) opened in the middle of the cylindrical frame (72), a cylindrical filter screen (74) inserted into the cavity (73), and a number of filter plates (75) arranged in a ring array around the cavity (73) inside the cylindrical frame (72).

2. A polymer filter according to claim 1, characterized in that: The filter plate (75) has a rectangular structure, and the spacing between the filter plates (75) is equidistantly distributed along the gas flow direction.

3. A polymer filter according to claim 1, characterized in that: A sealing gasket is provided at the connection between the housing (71) and the cover (6), and the sealing gasket is made of fluororubber.

4. A polymer filter according to claim 1, characterized in that: The two ends of the spring (53) are respectively welded to the inner wall of the directional hole (52) and the end face of the limiting post (54), and the end of the limiting post (54) is a hemispherical structure.

5. A polymer filter according to claim 1, characterized in that: The inner diameters of the conical cylinder (51), sleeve (55), and shell cover (6) are equal and coaxially connected. The inner wall of the shell cover (6) is clearance-fitted with the outer wall of the column frame (72).

6. A polymer filter according to claim 1, characterized in that: The surface of the filter plate (75) is coated with an oleophobic coating, the thickness of which is less than 0.1 mm.

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