A magnetic filter device

By designing a flexible magnetic filter device with a T-shaped pipe structure and a built-in drain valve, the problem of incomplete filtration of impurities in heating pipelines was solved, the device structure was simplified, and the heating efficiency and service life of the device were improved.

CN224530697UActive Publication Date: 2026-07-21WENZHOU KAISILONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU KAISILONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Filing Date
2025-06-05
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing filter devices in heating pipelines have unreasonable structures, cannot effectively filter impurities, have drain valves located outside the device, increasing the device size and making installation inconvenient, and the magnets cannot effectively attract fine iron filings, affecting heating efficiency and device lifespan.

Method used

Design a flexible magnetic filter device with a T-shaped tube structure, an internal drain valve, a magnet located below the filter screen with a magnetic field strength of 4000-8000 Gauss, a magnet base connected to an upper plug, a filter screen fixed to the pipeline, and a drain port connected via a pneumatic quick-connect fitting for easy disassembly and installation.

Benefits of technology

It achieves effective filtration of impurities, simplifies the device structure, reduces installation complexity, improves heating efficiency and device lifespan, effectively attracts iron filings with magnets, and simplifies sewage discharge operations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224530697U_ABST
    Figure CN224530697U_ABST
Patent Text Reader

Abstract

The utility model relates to a kind of live joint type magnetic filtering device, upper plug is equipped in filter cylinder cavity, upper cover is equipped in the upper plug top in filter cylinder upper inner wall, the bottom of upper plug is connected with filter screen, blowdown valve is equipped below filter screen, lower cover is equipped in filter cylinder bottom, blowdown port is equipped on the middle axis of lower cover bottom, blowdown valve two ends are respectively communicated with pipeline, upper pipeline is communicated with filter screen bottom, lower pipeline is communicated with the pneumatic quick connector at blowdown port, filter cylinder wall middle upper portion is communicated with T-shaped pipe, horizontal water inlet pipe communicated into upper plug cavity is equipped in T-shaped pipe horizontal section, horizontal water inlet pipe other end is communicated with vertical water inlet pipe top end, outlet pipe water outlet is equipped with live joint pipe fitting.The utility model has the advantages that the utility model sets blowdown valve in interior, reduces structure, the connection structure of upper plug and upper cover and filter cylinder, it is convenient to disassemble, live joint pipe fitting is equipped on outlet pipe, it is convenient to connect with other standard parts.
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Description

Technical Field

[0001] This utility model relates to a filtration device, and more particularly to a flexible magnetic filtration device for use in heating pipelines. Background Technology

[0002] There are various heating methods available today, including geothermal, wall-hung boilers, electric heating, and radiators. With technological advancements, geothermal and wall-hung boiler systems have become increasingly popular. However, the circulating water in geothermal and wall-hung boiler systems is constantly heated, often resulting in the accumulation of solid impurities. This can clog the heating pipes and affect the heating efficiency.

[0003] Therefore, a filtration device needs to be added to the heating pipeline to filter impurities and prevent them from circulating, ensuring the smooth flow of the pipeline. This is especially important for wall-hung boilers, which have high requirements for water quality. During operation, wall-hung boilers generate impurities, and if these impurities circulate, it will affect the heating efficiency and the normal lifespan of the heating system. Currently, the drain valve in the filtration device is located outside the device, increasing the overall size and requiring more space during installation. Furthermore, the existing filtration device has an unreasonable internal water channel design, causing the inlet and outlet water to mix completely. The internal plastic filter screen is ineffective, and the magnet, located below the plastic filter screen, prevents the adsorption of fine iron filings during operation. The drain outlet connection is inconvenient, requiring additional components. The drain valve is equipped with a small round copper cap, which must be used to unscrew the valve stem during draining, which is very laborious and inconvenient for users. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a flexible magnetic filter device, which aims to facilitate the replacement of magnets, reduce the number of external components, and facilitate connection with other components.

[0005] To achieve the above objectives, this utility model discloses a flexible magnetic filter device, comprising a filter cylinder, an upper plug inside the filter cylinder cavity, an upper cover above the upper plug on the upper inner wall of the filter cylinder, a filter screen connected to the bottom of the upper plug, a drain valve below the filter screen, a lower cover at the bottom of the filter cylinder, a drain port on the central axis of the bottom of the lower cover, both ends of the drain valve being connected to pipelines, the upper pipeline being connected to the bottom of the filter screen, and the lower pipeline being connected to a pneumatic quick-connect fitting at the drain port, the upper part of the filter cylinder wall being connected to a T-shaped pipe, a horizontal water inlet pipe connected to the upper plug cavity within the horizontal section of the T-shaped pipe, the other end of the horizontal water inlet pipe being connected to the top of a vertical water inlet pipe, a first cavity being formed between the upper plug and the filter cylinder, and a second cavity being formed between the horizontal water inlet pipe and the horizontal section of the T-shaped pipe, the first cavity being connected to the outlet pipe through the second cavity, and a flexible connector being provided at the outlet of the outlet pipe.

[0006] The top sealing plate of the upper plug has a through hole in the center, and a groove seat is formed at the top of the through hole. The cross-section of the upper cover is shaped like a towel. The cylindrical cavity in the middle of the upper cover is inserted into the cavity of the upper plug. The upper part of the cylindrical cavity changes diameter to form a frustum seat. The outer wall of the frustum seat sits on the groove seat. The bolt inserted into the top surface of the magnet seat is fixedly connected to the magnet. The magnet is inserted into the cylindrical cavity. The magnet seat is a cylinder with an edge at the top. The bottom of the magnet seat sits on the frustum seat on the inner wall of the cylindrical cavity.

[0007] The surface magnetic field strength of the magnet is 4000-8000 Gauss, the bottom of the magnet is located in the lower part of the upper plug cavity, and the top surface of the filter screen is higher than the bottom of the magnet.

[0008] The top cover is threadedly connected to the inner wall of the filter cylinder.

[0009] The upper outer wall of the upper plug is provided with an edge, which sits on a fixed seat on the upper inner wall of the filter cylinder.

[0010] The filter screen includes a cylindrical screen body and a conical cylinder connected to the lower end of the screen body, and the conical cylinder is fixedly connected to the pipeline.

[0011] The horizontal section of the T-shaped tube is inserted into the inlet of the filter cartridge side wall. Two annular grooves are provided on the outer wall of the front end of the horizontal section of the T-shaped tube, and a sealing ring is provided in the annular groove.

[0012] The filter cartridge side wall inlet is connected to the connection port, and the U-shaped retaining spring is inserted downward from the top two sides of the connection port into the groove that fixes the horizontal section of the T-shaped tube, so that the T-shaped tube and the filter cartridge are connected as one unit.

[0013] The rotating handle of the drain valve extends out of the filter cylinder.

[0014] The inlet outer wall of the vertical water inlet pipe is threaded.

[0015] Advantages and effects of this utility model: This utility model uses a T-shaped pipe as the vertical inlet and outlet pipe, forming a single component. Impurities are removed through circulating filtration within the filter cartridge. The drain valve is located inside the utility model, simplifying the structure. The connection structure between the upper plug and the upper cover and the filter cartridge facilitates disassembly. The magnet holder allows for magnet replacement. A flexible connector is provided on the outlet pipe for easy connection with other standard components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a top view of the connection port of the filter cartridge.

[0018] In the diagram: 1. Vertical inlet pipe; 2. Filter cylinder; 3. Upper plug; 4. Filter screen; 5. Drain valve; 6. Rotary handle; 7. Magnet; 8. Top cover; 9. Magnet base; 10. Sealing ring; 11. U-shaped retaining ring; 12. Pipeline; 13. Drain outlet; 14. Outlet pipe; 15. Fitting; 16. Lower cover; 17. Pneumatic quick-connect fitting; 18. T-shaped pipe; 19. Horizontal inlet pipe; 20. First cavity; 21. Second cavity; 22. Sealing plate; 23. Cylindrical cavity; 24. Frustum base; 25. Bolt; 26. Fixing base; 27. Conical cylinder; 28. Connection port. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of this utility model, and not all of them. Based on the specific embodiments of this utility model, all other specific embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] As shown in the figure, this utility model discloses a flexible magnetic filter device, including a filter cylinder 2. The filter cylinder 2 filters water, removing impurities. An upper plug 3 is provided inside the filter cylinder 2 cavity. The upper outer wall of the upper plug 3 has an edge, which sits on a fixing seat 26 on the upper inner wall of the filter cylinder 2. The upper plug 3 and the fixing seat 26 are sealed by a sealing gasket. The upper plug 3 divides the filter cylinder cavity into two cavities, facilitating circulation within the filter cylinder 2. An upper cover 8 is provided above the upper plug 3 on the upper inner wall of the filter cylinder 2. A sealing gasket is provided between the edge of the upper plug 3 and the upper cover 8. The upper cover 8 is threadedly connected to the inner wall of the filter cylinder 2. A filter screen 4 is connected to the bottom of the upper plug 3. Water enters the cavity of the upper plug 3 and flows through the filter screen 4, filtering out impurities. A drain valve 5 is provided below the filter screen 4 to remove filtered impurities. The filter cylinder 2 has a bottom cover 16 at the bottom, and a drain port 3 is located on the central axis of the bottom of the bottom cover 16. The two ends of the drain valve 5 are connected to the pipe 12 respectively. The upper pipe is connected to the bottom of the filter screen 4, and the lower pipe is connected to the pneumatic quick connector 17 at the drain port 3. The upper part of the filter cylinder 2 has a connection port 28, which is connected to the T-shaped pipe 18. A horizontal water inlet pipe 19 is provided in the horizontal section of the T-shaped pipe 18, which is connected to the cavity of the upper plug 3. The other end of the horizontal water inlet pipe 19 is connected to the top of the vertical water inlet pipe 1. The upper plug 3 and the filter cylinder 2 form a first cavity 20, and the horizontal water inlet pipe 19 and the horizontal section of the T-shaped pipe form a second cavity 21. The first cavity 20 is connected to the water outlet pipe 14 through the second cavity 21. The water outlet of the water outlet pipe 14 is provided with a flexible connector 15 for easy installation and disassembly with other pipes during use.

[0021] The top of the upper plug 3 is a sealing plate 22, with a through hole in the center of the sealing plate 22. A groove seat is formed above the through hole. The upper cover 8 has a cross-section in the shape of a towel. The cylindrical cavity 23 in the middle of the upper cover 8 is inserted into the cavity of the upper plug 3. The upper part of the cylindrical cavity 23 changes diameter to form a frustum 24. The outer wall of the frustum 24 sits on the groove seat. The bolt 25 inserted into the top surface of the magnet seat 9 is fixedly connected to the magnet 7. The magnet 7 is inserted into the cylindrical cavity 23 to form a magnetic rod. The magnet seat 9 is a cylinder with an edge at the top. The bottom of the magnet seat 9 sits on the frustum 24 on the inner wall of the cylindrical cavity 23.

[0022] The surface magnetic field strength of the magnet 7 of this utility model is 4000-8000 Gauss, which meets the requirements. The bottom of the magnet 7 is located in the lower part of the cavity of the upper plug 3, and the top surface of the filter screen 4 is higher than the bottom of the magnet. This allows the water to be attracted to iron filings and other particles in the water to the greatest extent under the action of the magnetic field when it flows.

[0023] The filter screen 4 of this utility model has a conical cylinder 27 below it, and the upper part of the conical base 27 is funnel-shaped. The center of the conical cylinder 27 is a pipeline connected to the drain valve 5. When the drain operation is performed, the water passes through the filter screen, the upper part of the funnel-shaped cone, enters the pipeline and the drain valve 5, and then is discharged from the pneumatic quick connector at the drain port.

[0024] The inlet on the side wall of filter cartridge 2 is connected to connection port 28. The horizontal section of T-shaped tube 18 is inserted into connection port 28 on the side wall of filter cartridge 2. An annular groove is provided on the outer wall of the front end of the horizontal section of T-shaped tube, and a sealing ring 10 is provided in the annular groove; Figure 2 As shown, the U-shaped retaining ring is inserted downwards from both sides of the top of the connection port 28 into the groove for fixing the horizontal section of the T-shaped tube, so that the T-shaped tube and the filter cylinder 2 are connected as one unit. The connection port 28 is square in shape and circular in inner cavity, and the horizontal section of the T-shaped tube is circular.

[0025] The rotating handle 6 of the drain valve 5 extends out of the filter cylinder 2.

[0026] The outer wall of the inlet of the vertical water inlet pipe 1 is threaded.

[0027] The working principle of this utility model is as follows: Water enters through the vertical inlet pipe 1, passes through the horizontal inlet pipe 19, and flows downward into the upper plug 3 cavity. Under the action of the magnetic field formed by the magnet inside the upper plug 3, if there are fine iron filings or other components in the water, they will be attracted to the magnetic rod. As the water passes through the filter screen 4, some of the solid impurities will be blocked inside the filter screen. The filtered clean water flows into the first cavity 20 and continues to flow upward. It then flows through the second cavity 21 to the outlet pipe 14 and finally flows out from the connector 15. When the fluid pressure is too low, it is time to drain the sewage. Rotating the handle 6 of the drain valve will perform backwashing and sewage drainage. After the sewage is drained clean, the drain valve 5 can be closed. If the filter screen 4 needs to be cleaned, after all the fluid has been drained, the upper cover 8 can be removed, the filter screen 4 can be taken out for cleaning, and then it can be reinstalled. Regular cleaning of the magnetic filter can remove residual rust, sand, etc., thereby ensuring that the pipes and internal parts are not damaged, and thus protecting the normal operation of the equipment. This invention integrates the drain valve inside the filter cartridge, resulting in a cleaner and more aesthetically pleasing design. The knob-style handle enhances practicality. The drain outlet uses a pneumatic quick-connect fitting, allowing for direct connection of a pneumatic hose to the sewer drain without splashing during discharge.

Claims

1. A flexible magnetic filter device, comprising a filter cylinder (2), characterized in that... The filter cylinder (2) is equipped with an upper plug (3) inside the cavity. An upper cover (8) is provided above the upper plug (3) on the upper inner wall of the filter cylinder (2). A filter screen (4) is connected to the bottom of the upper plug (3). A drain valve (5) is provided below the filter screen (4). A lower cover (16) is provided at the bottom of the filter cylinder (2). A drain port (13) is provided on the central axis of the bottom of the lower cover (16). Both ends of the drain valve (5) are connected to the pipeline. The upper pipeline is connected to the bottom of the filter screen (4), and the lower pipeline is connected to the pneumatic quick-connect fitting (1) at the drain port (13). 7) The upper part of the filter cylinder (2) wall is connected to the T-shaped pipe (18). A horizontal water inlet pipe (19) is provided in the horizontal section of the T-shaped pipe (18) and connects to the cavity of the upper plug (3). The other end of the horizontal water inlet pipe (19) is connected to the top of the vertical water inlet pipe (1). A first cavity (20) is formed between the upper plug (3) and the filter cylinder (2). A second cavity (21) is formed between the horizontal water inlet pipe (19) and the horizontal section of the T-shaped pipe. The first cavity (20) is connected to the outlet pipe (14) through the second cavity (21). 14) The outlet is equipped with a flexible connector (15); the horizontal section of the T-shaped pipe is inserted into the inlet of the side wall of the filter cylinder (2), and an annular groove is provided on the outer wall of the front end of the horizontal section of the T-shaped pipe, and a sealing ring (10) is provided in the annular groove; the inlet of the side wall of the filter cylinder (2) is connected to the connection port (28), and the U-shaped snap ring is inserted downward from both sides of the top of the connection port (28) into the groove for fixing the horizontal section of the T-shaped pipe, so that the T-shaped pipe and the filter cylinder (2) are connected as one unit; the top sealing plate (22) of the upper plug (3) is provided with a through hole in the center, and the upper part of the through hole is shaped The groove seat is formed, the upper cover (8) has a cross-section in the shape of a towel, the cylindrical cavity (23) in the middle of the upper cover (8) is inserted into the cavity of the upper plug (3), the upper part of the cylindrical cavity (23) changes diameter to form a frustum seat (24), the outer wall of the frustum seat (24) sits on the groove seat, the bolt (25) inserted on the top surface of the magnet seat (9) is fixedly connected to the magnet (7), the magnet (7) is inserted into the cylindrical cavity (23), the magnet seat (9) is a cylinder with an edge on the top, and the bottom of the magnet seat (9) sits on the frustum seat (24) on the inner wall of the cylindrical cavity (23).

2. The detachable magnetic filter device according to claim 1, characterized in that... The surface magnetic field strength of the magnet (7) is 4000-8000 Gauss. The bottom of the magnet (7) is located in the lower part of the cavity of the upper plug (3), and the top surface of the filter screen (4) is higher than the bottom of the magnet (7).

3. The detachable magnetic filter device according to claim 1, characterized in that... The top cover (8) is threadedly connected to the inner wall of the filter cylinder (2).

4. The detachable magnetic filter device according to claim 1, characterized in that... The upper outer wall of the upper plug (3) is provided with an edge, which sits on the fixing seat (26) on the upper inner wall of the filter cylinder (2).

5. A flexible magnetic filter device according to claim 1, characterized in that... The filter screen (4) includes a cylindrical screen body and a conical cylinder (27) connected to the lower end of the screen body. The conical cylinder (27) is fixedly connected to the pipeline.

6. A flexible magnetic filter device according to claim 1, characterized in that... The rotating handle (6) of the drain valve (5) extends out of the filter cylinder (2).

7. A flexible magnetic filter device according to claim 1, characterized in that... The inlet outer wall of the vertical water inlet pipe (1) is threaded.