A multi-cartridge filter with easy removal

Abstract

This utility model relates to a detachable multi-filter cartridge filter, comprising a housing, a top cover, and a filter cartridge assembly. Its key feature is that the filter cartridge assembly uses a multi-filter combination type, wherein the multi-filter combination type includes a cylindrical filter screen, a filter screen mounting plate, a filter screen mounting base plate, a fixing screw, and a hand-tightening nut. The filter screen mounting plate has uniformly arranged filter screen mounting holes along its circumference that mate with the upper end of the cylindrical filter screen. The lower end of the cylindrical filter screen is fixedly mounted within the filter screen mounting plate by the fixing screw, the filter screen mounting base plate, and the hand-tightening nut. It has advantages such as simple structure, convenient disassembly and cleaning, large filtration area, and high filtration efficiency.

Description

Technical Field

[0001] This utility model relates to a fluid filtration device, and more particularly to a detachable multi-element filter. Background Technology

[0002] In the production processes of industries such as brewing, pharmaceuticals, and chemicals, filters are typically installed in fluid pipelines to improve the purity of the medium. The fluid passes through the filter to remove impurities, resulting in a medium that meets production purity requirements. Current industrial filters generally use a single filter screen inside the filter housing to filter impurities. However, this method has the disadvantage of a small filtration area and low filtration efficiency. To improve filtration efficiency, multi-element filters, such as the one with announcement number CN208115346U, incorporate multiple filter elements within the housing, each independently installed. However, this method has the disadvantage of a complex structure and cumbersome installation and disassembly. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a simple, easy-to-install and disassemble multi-element filter with high filtration efficiency.

[0004] The technical solution to achieve the purpose of this utility model is as follows:

[0005] A detachable multi-element filter includes a housing, a top cover, and a filter element assembly. The top cover has an inlet connector at its upper center, and the housing has an outlet connector at its lower center. The filter element assembly is installed inside the housing via the top cover. The filter element assembly is characterized by employing a multi-filter combination type, comprising cylindrical filter screens, a filter screen mounting plate, a filter screen mounting base plate, fixing screws, and hand-tightening nuts. The cylindrical filter screens have at least three sections, each with an opening at its upper end and a radial positioning lug on its outer circumference. The filter screen mounting plate has a radial positioning lug on its inner circumference. The filter screen mounting holes are evenly spaced and oriented to mate with the upper end of the cylindrical filter screen; a positioning rod is provided at the center of the lower end of the cylindrical filter screen, and positioning holes are evenly spaced in the circumferential direction of the rod to mate with the positioning rod. The upper end of the fixing screw passes through the center hole of the filter screen mounting base plate and is threadedly connected to the screw hole at the center of the lower plane of the filter screen mounting plate. The hand-tightening nut is threadedly connected to the lower end of the fixing screw, and its upper end face is pressed against the lower plane of the filter screen mounting base plate. The filter screen mounting plate is installed between the upper flange of the housing and the lower flange of the upper cover using a flange seal.

[0006] The preferred embodiment is that the filter screen mounting hole consists of a lower large-diameter mounting hole and an upper small-diameter mounting hole. The diameter of the large-diameter mounting hole is at least equal to the outer diameter of the cylindrical filter screen, and the diameter of the small-diameter mounting hole is smaller than the inner diameter of the cylindrical filter screen. A radial positioning groove is provided on the inner wall of the large-diameter mounting hole, which cooperates with the radial positioning lug. The upper surface of the cylindrical filter screen is pressed against the annular inner step of the filter screen mounting hole.

[0007] The preferred embodiment is that there are at least two radial positioning grooves, which are evenly arranged on the inner wall of the large-diameter mounting hole, and the outer circumference of the upper end of the cylindrical filter screen is provided with the same number of radial positioning lugs as the radial positioning grooves.

[0008] The preferred embodiment is that the positioning rod at the lower end of the cylindrical filter screen adopts a triangular positioning plate, and the positioning hole on the filter screen mounting base plate adopts a triangular positioning hole that cooperates with the triangular positioning plate.

[0009] The preferred embodiment is that the filter mounting base plate adopts a ring-shaped mesh structure.

[0010] A preferred embodiment is to provide a flushing connector that connects to the inner cavity on the upper end face of the cover, and a drain connector that connects to the inner cavity on the lower end face of the housing.

[0011] The advantages of this utility model compared with the prior art are: the filter element assembly adopts a multi-filter combination filter element, which has the advantages of simple structure, convenient disassembly and cleaning, large filtration area and high filtration efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a utility model Figure 1 A schematic diagram of the structure in the AA direction.

[0014] Figure 3 This is a utility model Figure 1 A schematic diagram of the structure of the lower plane of the middle filter screen mounting plate.

[0015] Figure 4 This is a utility model Figure 3 A schematic diagram of the structure in the BB direction.

[0016] In the diagram: 1. Housing, 2. Top cover, 3. Cylindrical filter screen, 4. Filter screen mounting plate, 5. Filter screen mounting base plate, 6. Fixing screw, 7. Hand-tightening nut, 8. Positioning rod, 9. Inlet connector, 10. Outlet connector, 11. Flushing connector, 12. Sewage discharge connector, 13. Positioning hole, 14. Screw hole, 15. Filter screen mounting hole, 16. Radial positioning groove, 17. Large diameter mounting hole, 18. Small diameter mounting hole. Detailed Implementation

[0017] like Figure 1The removable multi-element filter includes a housing 1, a top cover 2, and a filter element assembly. The top cover 2 has an inlet connector 9 at its upper center, and the housing 1 has an outlet connector 10 at its lower center. The filter element assembly is installed inside the housing 1 via the top cover 2. The medium enters through the inlet connector 9, is filtered by the filter element assembly, and flows out through the outlet connector 10, thus purifying the output medium. Its characteristic is that the filter element assembly uses a multi-filter combination type, which includes a cylindrical filter screen 3, a filter screen mounting plate 4, and a filter screen mounting base plate. 5. Fixing screw 6 and hand-tightening nut 7, the cylindrical filter screen 3 is a cylindrical structure with a central cavity, its cylindrical sidewall and bottom are filter screens; the cylindrical filter screen 3 has at least three, with an opening at the upper end, and a radial positioning lug provided on the outer circumference of the upper end, and filter screen mounting holes 15 are evenly arranged in the circumferential direction in the plane of the filter screen mounting plate 4 to cooperate with the upper end of the cylindrical filter screen 3. In this utility model, five cylindrical filter screens 3 are used, and the filter screen mounting plate 4 has five filter screen mounting holes 15 to cooperate with the cylindrical filter screen 3 for installation, such as Figure 3 As shown, a positioning rod 8 is provided at the center of the lower end of the cylindrical filter screen 3, and positioning holes 13 are evenly arranged in the circumferential direction within the plane of the filter screen mounting base plate 5 to cooperate with the positioning rod 8, as shown. Figure 2 As shown, the upper end of the fixing screw 6 passes through the center hole of the filter mounting base plate 5 and is threadedly connected to the screw hole 14 at the center of the lower plane of the filter mounting plate 4. The hand-tightening nut 7 is threadedly connected to the lower end of the fixing screw 6, and its upper end face is pressed against the lower plane of the filter mounting base plate 5. The cylindrical filter 3 is pressed and installed in the filter mounting hole 15 through the filter mounting base plate 5, so that the cylindrical filter 3, the filter mounting plate 4, the filter mounting base plate 5, the fixing screw 6 and the hand-tightening nut 7 form an integral filter element assembly. The filter mounting plate 4 is installed between the upper flange of the housing 1 and the lower flange of the upper cover 2 by a flange seal. The fluid medium enters the inner cavity of the upper cover 2 from the inlet connector 9 and enters the inner cavity of the cylinder from the upper opening of the five cylindrical filter screens 3 for filtration. It has a large filtration area and high efficiency. Moreover, the filter element assembly can be taken out and cleaned as a whole by simply opening the upper cover 2. The structure is simple and easy to disassemble and clean.

[0018] The filter mounting hole 15 consists of a lower large-diameter mounting hole 17 and an upper small-diameter mounting hole 18, such as... Figure 4 As shown, the diameter of the large-diameter mounting hole 17 is at least equal to the outer diameter of the cylindrical filter screen 3, allowing the outer cylindrical surface of the cylindrical filter screen 3 to be inserted into the large-diameter mounting hole 17. The diameter of the small-diameter mounting hole 18 is smaller than the inner diameter of the cylindrical filter screen 3, allowing the media fluid to enter the inner cavity of the cylindrical filter screen 3 without obstruction through the small-diameter mounting hole 18, preventing media impurities from accumulating on the upper end face of the cylindrical filter screen 3. A radial positioning groove 16 is provided on the inner wall of the large-diameter mounting hole 17, which cooperates with the radial positioning lug, to prevent the cylindrical filter screen 3 from rotating within the filter screen mounting hole 15 of the filter screen mounting plate 4. Figure 3As shown, the upper end face of the cylindrical filter screen 3 is pressed into contact with the annular inner step of the filter screen mounting hole 15 to prevent the medium from passing directly through the outer cylindrical surface of the cylindrical filter screen 3 through the upper end face of the cylindrical filter screen 3.

[0019] At least two radial positioning grooves 16 are evenly distributed on the inner wall of the large-diameter mounting hole 17. The upper outer circumference of the cylindrical filter screen 3 has the same number of radial positioning lugs as the radial positioning grooves 16, improving the stability of the connection between the cylindrical filter screen 3 and the filter screen mounting plate 4. Figure 3 As shown.

[0020] The positioning rod 8 at the lower end of the cylindrical filter screen 3 adopts a triangular positioning plate. The positioning hole 13 on the filter screen mounting base plate 5 adopts a triangular positioning hole that cooperates with the triangular positioning plate. The radial cross-section of the triangular positioning plate, i.e., the positioning rod 8, is a Y-shaped structure. The triangular positioning hole is a positioning groove with a Y-shaped structure. The Y-shaped positioning rod 8 and the Y-shaped positioning groove cooperate with each other to prevent relative rotation between the cylindrical filter screen 3 and the filter screen mounting base plate 5. Figure 1 , Figure 2 As shown.

[0021] The filter mounting base plate 5 adopts a ring-shaped mesh structure, which is composed of mesh holes set in the plane of the ring plate, so that the fluid can pass through smoothly.

[0022] A flushing connector 11 is provided on the upper end face of the cover 2 to connect to its inner cavity, and a drain connector 12 is provided on the lower end face of the housing 1 to connect to its inner cavity, so that the inner cavity of the housing 1 and the filter assembly can be flushed at any time.

Claims

1. A detachable multi-element filter, comprising a housing (1), a top cover (2), and a filter element assembly, wherein an inlet connector (9) is provided at the center of the upper end of the top cover (2), and an outlet connector (10) is provided at the center of the lower end of the housing (1), and the filter element assembly is installed in the inner cavity of the housing (1) by the top cover (2); characterized in that: The filter element assembly adopts a multi-filter combination filter element, which includes a cylindrical filter (3), a filter mounting plate (4), a filter mounting base plate (5), a fixing screw (6), and a hand-tightening nut (7). The cylindrical filter (3) has at least three parts, with an opening at the top and a radial positioning lug on the outer circumference of the top. The filter mounting plate (4) has filter mounting holes (15) that cooperate with the top of the cylindrical filter (3) evenly arranged in the circumferential direction within the plane. A positioning rod (8) is provided at the center of the lower end of the cylindrical filter (3). The filter mounting base plate (5) is uniformly provided with positioning holes (13) that cooperate with the positioning rod (8) in the circumferential direction. The upper end of the fixing screw (6) passes through the center hole of the filter mounting base plate (5) and is threadedly connected to the screw hole (14) at the center of the lower plane of the filter mounting plate (4). The hand-tightening nut (7) is threadedly connected to the lower end of the fixing screw (6), and its upper end face is pressed and contacted with the lower plane of the filter mounting base plate (5). The filter mounting plate (4) is installed between the upper flange of the housing (1) and the lower flange of the upper cover (2) using a flange seal.

2. The detachable multi-element filter according to claim 1, characterized in that: The filter mounting hole (15) consists of a lower large-diameter mounting hole (17) and an upper small-diameter mounting hole (18). The diameter of the large-diameter mounting hole (17) is at least equal to the outer diameter of the cylindrical filter (3), and the diameter of the small-diameter mounting hole (18) is smaller than the inner diameter of the cylindrical filter (3). The inner wall of the large-diameter mounting hole (17) is provided with a radial positioning groove (16) that cooperates with the radial positioning lug. The upper end face of the cylindrical filter (3) is pressed against the annular inner step of the filter mounting hole (15).

3. The detachable multi-element filter according to claim 2, characterized in that: There are at least two radial positioning grooves (16), which are evenly arranged on the inner wall of the large-diameter mounting hole (17). The upper outer circumference of the cylindrical filter screen (3) is provided with the same number of radial positioning lugs as the radial positioning grooves (16).

4. The detachable multi-element filter according to claim 1, 2, or 3, characterized in that: The filter mounting base plate (5) adopts a ring mesh structure.

5. The detachable multi-element filter according to claim 4, characterized in that: A flushing connector (11) is provided on the upper end face of the cover (2) to connect to its inner cavity, and a drain connector (12) is provided on the lower end face of the housing (1) to connect to its inner cavity.

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