A filter cartridge with reinforced sealing effect

Abstract

This utility model discloses a reinforced filter cartridge with good sealing performance, comprising a filter bottle, a cap, and PP filter cotton. The cap is threaded onto the open end of the filter bottle, and a pipe is installed on the inner side of the cap. A positioning post is installed on the bottom surface inside the filter bottle. One end of the PP filter cotton is fitted onto the pipe, and the other end is fitted onto the positioning post. Both ends of the PP filter cotton have clamping rings that inwardly hold and fix the PP filter cotton to the pipe and the positioning post. Each clamping ring is divided into two halves, with both ends of the halves bent outward to form a pressure-bearing part. An extrusion frame is provided on the outside of the pressure-bearing parts on both sides. This utility model has a simple structure; the internal clamping mechanism can be activated by externally tightening bolts. While ensuring the PP filter cotton is securely installed, it effectively improves the sealing performance, prevents unfiltered liquid from short-circuiting, ensures filtration quality, and is easy and reliable to operate.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a filter with enhanced sealing performance. Background Technology

[0002] Filters are typically used in filtration equipment, which includes filter cartridges and filter bottles. A filter cartridge acts like a "sieve" or "purifying lung," responsible for intercepting and adsorbing impurities in fluids such as air, water, and oil.

[0003] However, the current filter bottles have a simple structure, and some filter elements, such as PP filter cotton, are made of relatively soft material. After being installed in the filter bottle, due to the lack of support, some water can easily pass directly through the bottom of the filter element and the gap between the filter element and the bottle cap during the filtration process from the outside to the inside, affecting the filtration quality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a filter element with enhanced sealing effect. The inwardly converging semi-rings can clamp and position the two ends of the PP filter cotton, thus ensuring the sealing performance and solving the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a reinforced filter element with good sealing effect, comprising a filter bottle, a bottle cap, and PP filter cotton. The bottle cap is threadedly connected to the open end of the filter bottle. A pipe is installed on the inner side of the bottle cap. A positioning post is installed on the bottom surface inside the filter bottle. One end of the PP filter cotton is fitted onto the pipe, and the other end is fitted onto the positioning post. Both ends of the PP filter cotton are provided with clamping rings that clamp and fix the PP filter cotton to the pipe and the positioning post. Each clamping ring is divided into two halves in the middle. Both ends of the halves are bent outward to form a pressure-bearing part. An extrusion frame is provided on the outside of the pressure-bearing part on both sides. Push plates are installed on the upper and lower opposing extrusion frames.

[0006] As a preferred technical solution, positioning shells are installed on both sides of the filter bottle facing the pusher plate. The interior of each positioning shell forms a positioning groove that communicates with the inner cavity of the filter bottle. The pusher plate is inserted into the positioning groove, and a rubber layer is installed in each positioning groove. The sides of the pusher plate are in contact with the rubber layer.

[0007] As a preferred technical solution, screw holes are provided on the outer side of the positioning shell, and bearings are embedded in the outer side of the push plate at the screw holes. Hand-tightening bolts are threaded into the screw holes, and one end of the hand-tightening bolt is installed in the inner ring of the bearing. The inner side of the nut on the hand-tightening bolt is set to abut against the outer side of the positioning shell.

[0008] As a preferred technical solution, a positioning sleeve is installed on the inner wall surface of the filter bottle opposite the semi-ring. A positioning rod is provided in the opening of each positioning sleeve. One end of each positioning rod is installed on the outer surface of the semi-ring, and a compression spring is installed on the other end of each positioning rod. The other end of each compression spring is installed on the inner wall surface of the positioning sleeve.

[0009] As a preferred technical solution, both the inner cavity of the positioning sleeve and the cross-section of the positioning rod are rectangular.

[0010] As a preferred technical solution, both the semi-ring and the extrusion frame are made of stainless steel.

[0011] As a preferred technical solution, the outer side of the pressure-bearing part is an inclined surface, and both ends of the pressure frame are arranged to abut against the inclined surface on the pressure-bearing part.

[0012] The beneficial effects of this utility model are as follows: This utility model has a simple structure. The two ends of the PP filter cotton are respectively fitted onto the pipe and the positioning column. By tightening the bolts by hand, the push plate can be driven to move inward. The movement of the push plate drives the extrusion frame. The extrusion frame acts on the inclined surface to make the semi-ring move inward and clamp and fix the two ends of the PP filter cotton onto the pipe and the positioning column. This ensures the firmness and stability of the PP filter cotton after installation and also prevents external water from directly passing through the gap between the top of the PP filter cotton and the pipe and the gap between the bottom of the PP filter cotton and the positioning column, thus ensuring the filtration quality. At the same time, its operation can be completed directly from the outside. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention after the bottle cap is removed;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model after the filter bottle is removed;

[0017] Figure 4 This is a cross-sectional view of the present invention.

[0018] The components are: 1. Filter bottle; 2. Bottle cap; 3. Positioning shell; 4. Hand-tightening bolt; 5. PP filter cotton; 6. Semi-ring; 7. Pressure-bearing part; 8. Extrusion frame; 9. Push plate; 10. Positioning sleeve; 11. Positioning rod; 12. Bearing; 13. Pipe; 14. Positioning column; 15. Positioning groove. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a filter cartridge with enhanced sealing effect, comprising a filter bottle 1, a bottle cap 2, and PP filter cotton 5. The bottle cap 2 is threadedly connected to the open end of the filter bottle 1. A pipe 13 is installed on the inner side of the bottle cap 2. A positioning post 14 is installed on the bottom surface inside the filter bottle 1. One end of the PP filter cotton 5 is fitted onto the pipe 13, and the other end is fitted onto the positioning post 14. Both ends of the PP filter cotton 5 are provided with clamping rings that clamp and fix the PP filter cotton 5 to the pipe 13 and the positioning post 14. Each clamping ring is divided into two halves 6 in the middle. Both ends of the half-rings 6 are bent outward to form a pressure-bearing part 7. An extrusion frame 8 is provided on the outside of the pressure-bearing parts 7 on both sides. Push plates 9 are installed on the upper and lower opposing extrusion frames 8.

[0023] In this embodiment, positioning shells 3 are installed on both sides of the filter bottle 1 facing the pusher plate 9. The interior of each positioning shell 3 forms a positioning groove 15 that communicates with the inner cavity of the filter bottle 1. The pusher plate 9 is inserted into the positioning groove 15, and a rubber layer is installed in each positioning groove 15. The side of the pusher plate 9 is in contact with the rubber layer.

[0024] Screw holes are provided on the outer side of the positioning shell 3. Bearings 12 are embedded in the outer side of the push plate 9, which is directly opposite the screw holes. Hand-tightening bolts 4 are threaded into the screw holes. One end of the hand-tightening bolts 4 is installed in the inner ring of the bearing 12. The inner side of the nut on the hand-tightening bolts 4 is set to abut against the outer side of the positioning shell 3.

[0025] The rubber layer can seal the gap between the push plate and the positioning groove. A rubber layer can also be installed on the inner side of the nut on the hand-tightening bolt. The rubber layer can abut against the outer wall of the positioning shell, thereby sealing the gap between the hand-tightening bolt and the screw hole and preventing external leakage.

[0026] In this embodiment, a positioning sleeve 10 is installed on the inner wall surface of the filter bottle 1 at the position opposite to the semi-ring 6. A positioning rod 11 is provided in the opening of the positioning sleeve 10. One end of the positioning rod 11 is installed on the outer side surface of the semi-ring 6, and the other end of the positioning rod 11 is installed with a compression spring. The other end of the compression spring is installed on the inner wall surface of the positioning sleeve 10.

[0027] In this embodiment, the inner cavity of the positioning sleeve 10 and the cross section of the positioning rod 11 are both rectangular, so that the positioning rod can only move back and forth along the axial direction of the positioning sleeve, and can also position the half ring. After the squeezing frame loses its pressure on the pressure part, the rebound of the compression spring can pull the half ring outward, so that the half ring can be opened, thereby allowing the PP filter cotton to be disassembled and replaced.

[0028] In this embodiment, both the semi-ring 6 and the extrusion frame 8 are made of stainless steel, which increases their strength and prevents them from rusting.

[0029] In this embodiment, the outer side of the pressure-receiving part 7 is an inclined surface, and both ends of the pressure frame are arranged to abut against the inclined surface on the pressure-receiving part 7.

[0030] Working principle:

[0031] First, insert one end of the PP filter cotton into the positioning column, and after the bottle cap is closed, the pipe can be inserted into the other end of the PP filter cotton. Then, by rotating the hand-tightening bolt 4 installed on the outside of the positioning shell 3, the hand-tightening bolt 4 is pushed inward. Since the end of the hand-tightening bolt 4 is connected to the push plate 9 through the bearing 12, the push plate 9 moves inward in the horizontal direction in the positioning groove 15.

[0032] The movement of the push plate 9 drives the connected extrusion frame 8 to move inward synchronously. The two ends of the extrusion frame 8 contact the inclined surfaces of the pressure-bearing parts 7 at both ends of the semi-ring 6 and apply radially inward extrusion force. This extrusion force is decomposed into a horizontally inward driving force and a clamping force pointing towards the center of the semi-ring 6, driving the two semi-rings 6 to move radially toward the center, thereby tightly clamping the two ends of the PP filter cotton 5 onto the outer circumferential surfaces of the pipe 13 and the positioning column 14.

[0033] During this process, the positioning rod 11 slides inside the positioning sleeve 10, and the compression spring is stretched, which plays the role of guidance and elastic reset. When the hand-tightening bolt 4 is tightened to the point that the push plate 9 can no longer move inward, the semi-ring 6 forms a stable and uniform clamping force on the PP filter cotton 5, ensuring that it will not be displaced due to water flow impact or gaps will be generated between it and the pipe 13 and the positioning column 14 during the filtration process.

[0034] During filtration, the liquid to be filtered enters from the outside of the filter bottle 1 and flows through the PP filter cotton 5 to complete the filtration from the outside in. Because the two ends of the PP filter cotton 5 are tightly clamped and sealed by the semi-rings 6, it effectively prevents the liquid from short-circuiting through the gaps between the two ends of the filter element and the pipe 13 or the positioning column 14, ensuring that all liquids are filtered by the filter material, thereby improving the filtration effect and filtration quality.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A filter element with enhanced sealing performance, characterized in that: The filter includes a filter bottle (1), a bottle cap (2), and PP filter cotton (5). The bottle cap (2) is threaded onto the open end of the filter bottle (1). A pipe (13) is installed on the inner side of the bottle cap (2). A positioning post (14) is installed on the bottom surface inside the filter bottle (1). One end of the PP filter cotton (5) is fitted onto the pipe (13), and the other end is fitted onto the positioning post (14). Both ends of the PP filter cotton (5) are provided with clamping rings that clamp and fix the PP filter cotton (5) onto the pipe (13) and the positioning post (14). Each clamping ring is divided into two halves (6) in the middle. Both ends of the half-rings (6) are bent outward to form a pressure part (7). Both sides of the pressure part (7) are provided with a squeezing frame (8). Push plates (9) are installed on the upper and lower opposite squeezing frames (8).

2. The reinforced filter cartridge with improved seal as claimed in claim 1 wherein: Positioning shells (3) are installed on both sides of the filter bottle (1) facing the pusher plate (9). The interior of each positioning shell (3) forms a positioning groove (15) that communicates with the inner cavity of the filter bottle (1). The pusher plate (9) is inserted into the positioning groove (15), and a rubber layer is installed in each positioning groove (15). The sides of the pusher plate (9) are in contact with the rubber layer.

3. The reinforced filter cartridge with improved seal as claimed in claim 2, wherein: Screw holes are provided on the outer side of the positioning shell (3). Bearings (12) are embedded in the outer side of the push plate (9) at the screw holes. Hand-tightening bolts (4) are threaded into the screw holes. One end of the hand-tightening bolts (4) is installed in the inner ring of the bearing (12). The inner side of the nut on the hand-tightening bolts (4) is in contact with the outer side of the positioning shell (3).

4. The enhanced sealing filter element according to claim 1, characterized in that: Positioning sleeves (10) are installed on the inner wall of the filter bottle (1) opposite to the semi-ring (6). Positioning rods (11) are provided in the openings of the positioning sleeves (10). One end of the positioning rods (11) is installed on the outer side of the semi-ring (6), and the other end of the positioning rods (11) is installed with a compression spring. The other end of the compression spring is installed on the inner wall of the positioning sleeves (10).

5. The enhanced sealing filter element according to claim 4, characterized in that: The inner cavity of the positioning sleeve (10) and the cross section of the positioning rod (11) are both rectangular.

6. The enhanced sealing filter element according to claim 1, characterized in that: Both the semi-ring (6) and the extrusion frame (8) are made of stainless steel.

7. The reinforced filter cartridge with enhanced seal of claim 1, wherein: The outer sides of the pressure-bearing part (7) are all inclined surfaces, and both ends of the pressure frame are arranged to abut against the inclined surfaces on the pressure-bearing part (7).

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