A pre-filter for water distribution device with magnetic filtration and bubble breaking function

By using a three-dimensional multi-layer diamond-shaped filter component and a magnetic filter component in the pre-filter of the manifold, the problem of poor handling of air bubbles and metal impurities is solved, achieving convenient cleaning and efficient filtration, and improving the heating effect of the underfloor heating system.

CN224371659UActive Publication Date: 2026-06-19YIHUAI ELECTRONIC TECH (ZHENJIANG) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YIHUAI ELECTRONIC TECH (ZHENJIANG) CO LTD
Filing Date
2025-07-16
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing manifold filters are ineffective at handling air bubbles and metallic impurities, and are inconvenient to clean, which affects the heating performance of the underfloor heating system.

Method used

A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions was designed. It adopts a three-dimensional multi-layer diamond-shaped filter component and a magnetic filter component. The three-dimensional multi-layer diamond-shaped filter component breaks up bubbles and intercepts impurities, and the magnets adsorb metal debris. Combined with an automatic air vent valve and a drain valve, it can be easily cleaned.

Benefits of technology

It effectively breaks up air bubbles, intercepts metal impurities, and facilitates easy cleaning through gravity and magnetic attraction, thus improving the filtration effect of the manifold and ensuring the normal operation of the underfloor heating system.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a pre-filter for a manifold with magnetic filtration and bubble-breaking functions. It includes a filter housing with a three-dimensional multi-layered diamond-shaped filter assembly inside. A drain valve is located at the bottom of the filter housing, and the magnetic filter assembly is positioned between the drain valve and the lower cover of the filter. An automatic air vent valve is located at the top of the filter housing and communicates with the interior of the filter housing. This utility model features a three-dimensional multi-layered diamond-shaped filter assembly at the positions corresponding to the inlet and outlet of the filter housing, and a magnetic filter assembly on the lower outer side of the filter housing. The three-dimensional multi-layered diamond-shaped filter assembly effectively breaks up and discharges air bubbles, while the magnetic filter assembly attracts metal impurities to the bottom of the filter under gravity and magnetic attraction, which are then flushed out through the drain valve. This facilitates disassembly and cleaning, improves the pre-filtration effect of the manifold in the underfloor heating system, and ensures the effectiveness of the manifold in the underfloor heating system.
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Description

Technical Field

[0001] This utility model belongs to the field of water manifold technology, specifically relating to a pre-filter for a water manifold with magnetic filtration and bubble-breaking functions. Background Technology

[0002] A manifold is a device used for the collection, distribution, flow regulation, and control of supply and return water. It can manually or automatically remove air trapped in the area. In underfloor heating systems, it is a device used to connect the main supply and return water pipes. It consists of two parts: a manifold and a collector. The manifold is a water distribution device used to connect the supply water pipes of each heating pipe in the water system, while the collector is a water collection device used to connect the return water pipes of each heating pipe in the water system.

[0003] When using a manifold, air bubbles and metallic impurities in the water pipe system can affect the heating effect of the manifold in the underfloor heating system if they are not filtered. Existing manifold filters use magnets in the middle of the filter, which magnetically attracts and adheres to the side wall of the filter, making it difficult to clean. Furthermore, the filters are not very effective at removing air bubbles, affecting the filtration and bubble-breaking effects of the manifold filter. Therefore, we propose a manifold pre-filter with magnetic filtration and bubble-breaking functions. Utility Model Content

[0004] The purpose of this invention is to provide a pre-filter for a water distributor with magnetic filtration and bubble-breaking functions to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-filter for a water distributor with magnetic filtration and bubble-breaking functions, comprising:

[0006] The filter housing has a three-dimensional multi-layer diamond-shaped filter assembly installed inside the filter housing at positions corresponding to the inlet and outlet.

[0007] A drain valve is disposed at the bottom of the filter housing via a filter cover and communicates with the interior of the filter housing.

[0008] A magnetic filter assembly, wherein the magnetic filter assembly is disposed between the drain valve and the lower cover of the filter via a plastic clip;

[0009] An automatic venting valve is provided at the upper end of the filter housing and communicates with the interior of the filter housing.

[0010] Preferably, the three-dimensional multi-layer diamond-shaped filter assembly includes plastic filter screens, and a plurality of plastic filter screens are provided. The plurality of plastic filter screens are stacked and arranged in the filter housing at positions corresponding to the water inlet and the water outlet, and are fixed by the filter bottom cover.

[0011] Preferably, the plastic filter mesh has a double-layer filter mesh structure with herringbone and inverted herringbone shapes.

[0012] Preferably, the lower cover of the filter is threaded onto the lower part of the filter housing, and a first sealing ring is provided between the lower cover of the filter and the filter housing.

[0013] Preferably, the drain valve is threaded onto the lower part of the filter cover via a metal threaded insert, and a second sealing ring is provided between the drain valve and the filter cover.

[0014] Preferably, the magnetic filter assembly includes a plastic magnetic base and a magnet;

[0015] The filter cover has a groove on its outer periphery, the plastic magnetic base is placed in the groove and fixed by the plastic clip, and the plastic magnetic base has a number of side slots arranged in a ring, each side slot containing a magnet.

[0016] Preferably, the magnet is a square magnet.

[0017] Preferably, the automatic exhaust valve is threaded onto the upper end of the filter housing via a metal threaded insert.

[0018] Preferably, a third sealing ring is provided between the automatic exhaust valve and the filter housing.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention features a three-dimensional multi-layered diamond-shaped filter assembly positioned at the inlet and outlet of the filter housing, and a magnetic filter assembly on the lower outer side of the filter housing. When water enters the filter housing through the inlet, the water flows through the three-dimensional multi-layered diamond-shaped filter assembly. Larger bubbles are broken down into smaller bubbles by the three-dimensional multi-layered diamond-shaped filter assembly, and the smaller bubbles rise upwards and are discharged through the interface at the top of the filter housing to the automatic air vent valve. The automatic air vent valve automatically discharges air. Impurities and metal fragments in the water are intercepted by the three-dimensional multi-layered diamond-shaped filter assembly inside the filter housing. Due to gravity and the magnets on the plastic magnetic base at the bottom of the filter housing, these impurities are effectively removed. The filter uses a suction effect to attract metal debris to the bottom of the filter housing. This can be achieved by pulling out the plastic clip, moving the plastic magnetic base downwards, and removing the magnet from the base. Once the bottom of the filter loses its magnetism, opening the drain valve will flush out the impurities and metal debris. No other parts need to be disassembled. Afterwards, the magnet is reattached to the plastic magnetic base, moved upwards to engage with the slot, and the plastic clip is inserted. The pre-filter of the manifold will then return to normal operation. It effectively breaks up and removes air bubbles, and attracts metal impurities to the bottom of the filter through gravity and magnetism, allowing them to be flushed out through the drain valve. This facilitates disassembly and cleaning, improves the pre-filtration effect of the manifold in the underfloor heating system, and ensures the optimal performance of the manifold in the system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0023] Figure 3 This is an exploded three-dimensional structural diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the dissected structure of this utility model;

[0025] Figure 5 This is a partially exploded three-dimensional structural diagram of the present invention;

[0026] Figure 6 This is an exploded three-dimensional structural diagram of the three-dimensional multi-layer rhomboid filter assembly of this utility model.

[0027] In the diagram: 1. Filter housing; 2. Inlet; 3. Outlet; 4. Multi-layer diamond-shaped filter assembly; 401. Plastic filter mesh; 5. Drain valve; 6. Filter bottom cover; 601. Clip groove; 7. Magnetic filter assembly; 701. Plastic magnetic base; 702. Magnet; 703. Side slot; 8. Automatic air vent valve; 9. First sealing ring; 10. Metal threaded insert; 11. Second sealing ring; 12. Third sealing ring; 13. Plastic clip. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-6 The pre-filter for a water distributor with magnetic filtration and bubble-breaking functions provided by this utility model includes:

[0030] The filter housing 1 has a three-dimensional multi-layer diamond-shaped filter assembly 4 installed inside the filter housing 1 at positions corresponding to the inlet 2 and outlet 3. The three-dimensional multi-layer diamond-shaped filter assembly 4 includes plastic filter mesh 401. Several plastic filter meshes 401 are stacked and installed inside the filter housing 1 at positions corresponding to the inlet 2 and outlet 3, and are fixed by the filter bottom cover 6. The plastic filter mesh 401 has a double-layer filter mesh structure with herringbone and inverted herringbone shapes. The stacking of multiple plastic filter meshes 401 provides better filtration effect for the fluid. The interlaced three-dimensional diamond mesh directly intercepts impurities and metal fragments in the fluid. In addition, the plastic filter mesh 401 has acid and alkali resistance, preventing oxidation and rust, and facilitating filter maintenance and cleaning.

[0031] The filter housing 1 is made of high-temperature resistant nylon and glass fiber material, which can be used for a long time in a water environment of about 80℃. At present, the operating temperature of plastic filters is limited to 55℃. The high-temperature resistance is improved. The acid and alkali resistance of nylon and glass fiber material makes the filter more widely applicable, safe and environmentally friendly.

[0032] Drain valve 5 is located at the bottom of filter housing 1 via filter lower cover 6 and communicates with the inside of filter housing 1;

[0033] A magnetic filter assembly 7 is disposed between a drain valve 5 and a filter lower cover 6 via a plastic clip 13. The magnetic filter assembly 7 includes a plastic magnetic base 701 and a magnet 702. A clamping groove 601 is provided on the outer periphery of the filter lower cover 6. The plastic magnetic base 701 is disposed in the clamping groove 601 and is fixed by the plastic clip 13. The plastic magnetic base 701 is provided with a number of side slots 703 arranged in a ring. A magnet 702 is provided in each side slot 703. The magnet 702 is a square magnet.

[0034] Automatic air vent valve 8 is located at the upper end of filter housing 1 and communicates with the interior of filter housing 1.

[0035] This invention features a three-dimensional multi-layered diamond-shaped filter assembly 4 positioned inside the filter housing 1 at the locations corresponding to the inlet 2 and outlet 3. A magnetic filter assembly 7 is also located on the lower outer side of the filter housing 1. When water flows into the filter housing 1 through the inlet 2, the water flows over the three-dimensional multi-layered diamond-shaped filter assembly 4. Larger bubbles are broken down into smaller bubbles by the three-dimensional multi-layered diamond-shaped filter assembly 4. These smaller bubbles then rise and are discharged through the interface at the upper end of the filter housing 1 to the automatic air vent valve 8. The automatic air vent valve 8 automatically discharges air. Impurities and metal fragments in the water are intercepted by the three-dimensional multi-layered diamond-shaped filter assembly 4 inside the filter housing 1. Due to gravity and the magnetic attraction of the magnet 702 on the plastic magnetic base 701 at the lower part of the filter housing 1, these impurities are effectively removed. The function is to adsorb metal debris to the bottom of the filter housing 1. This can be done by pulling out the plastic clip 13, moving the plastic magnetic base 701 downwards and removing the magnet 702 on the plastic magnetic base 701. After the bottom of the filter loses its magnetism, the drain valve 5 can be opened to flush out the impurities and metal debris without disassembling other parts. Then, the magnet 702 is installed on the plastic magnetic base 701, moved upwards and inserted into the clamping groove 601. After inserting the plastic clip 13, the pre-filter of the manifold can return to normal working condition. It can effectively break up and discharge air bubbles, and adsorb metal impurities to the bottom of the filter through gravity and magnetic attraction, and then flush them out through the drain valve 5. This facilitates disassembly and cleaning, improves the pre-filtration effect of the manifold in the underfloor heating system, and ensures the effectiveness of the manifold in the underfloor heating system.

[0036] In this embodiment, as Figure 2 As shown, the filter lower cover 6 is threaded onto the lower part of the filter housing 1, and a first sealing ring 9 is provided between the filter lower cover 6 and the filter housing 1 to improve sealing and prevent leakage.

[0037] In this embodiment, as Figure 2As shown, the drain valve 5 is threaded onto the lower part of the filter cover 6 via a metal threaded insert 10. The metal threaded insert 10 enhances the thread torque, making the drain valve 5 securely and safely installed. A second sealing ring 11 is provided between the drain valve 5 and the filter cover 6 to improve sealing and prevent leakage.

[0038] In this embodiment, as Figure 2 As shown, the automatic air vent valve 8 is threaded onto the upper end of the filter housing 1 via a metal threaded insert 10. The metal threaded insert 10 enhances the thread torque, making the installation of the automatic air vent valve 8 secure and safe. A third sealing ring 12 is provided between the automatic air vent valve 8 and the filter housing 1 to improve sealing and prevent leakage problems.

[0039] In summary, the method of using the pre-filter for the water distributor with magnetic filtration and bubble-breaking functions provided in this embodiment is as follows: When water flows into the filter housing 1 through the inlet 2, as the water flows through the three-dimensional multi-layer diamond-shaped filter assembly 4, the larger bubbles in the water flow are broken into smaller bubbles by the three-dimensional multi-layer diamond-shaped filter assembly 4. The smaller bubbles rise upward and are discharged to the automatic air vent 8 through the interface at the upper end of the filter housing 1. The automatic air vent 8 automatically discharges air. Impurities and metal fragments in the water flow are intercepted by the three-dimensional multi-layer diamond-shaped filter assembly 4 inside the filter housing 1. Due to gravity and the magnetic attraction of the magnet 702 on the plastic magnetic base 701 at the bottom of the filter housing 1, metal debris is attracted to the bottom of the filter housing 1. The plastic magnetic base 701 can be removed by pulling out the plastic clip 13, moving it downwards, and then removing the magnet 702 from the plastic magnetic base 701. After the bottom of the filter loses its magnetism, the drain valve 5 can be opened to flush out the impurities and metal debris. There is no need to disassemble other parts. Then, the magnet 702 is installed on the plastic magnetic base 701, moved upwards and inserted into the clamping groove 601. After inserting the plastic clip 13, the pre-filter of the water distributor can be restored to normal working condition.

[0040] 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 pre-filter for a water distribution device having magnetic filtration and bubble breaking functions, characterized in that, include: The filter housing (1) is provided with a three-dimensional multi-layer diamond filter assembly (4) at the positions corresponding to the inlet (2) and outlet (3). Drain valve (5), the drain valve (5) is provided at the bottom of the filter housing (1) through the filter lower cover (6) and communicates with the inside of the filter housing (1); A magnetic filter assembly (7) is disposed between the drain valve (5) and the filter lower cover (6) via a plastic clip (13); An automatic exhaust valve (8) is provided at the upper end of the filter housing (1) and communicates with the interior of the filter housing (1).

2. The pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 1, characterized in that: The three-dimensional multi-layer diamond-shaped filter assembly (4) includes a plastic filter mesh (401). A plurality of plastic filter meshes (401) are provided. The plurality of plastic filter meshes (401) are stacked and arranged in the filter housing (1) at positions corresponding to the inlet (2) and the outlet (3), and are abutted and fixed by the filter cover (6).

3. A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 2, characterized in that: The plastic filter mesh (401) has a double-layer filter mesh structure with herringbone and inverted herringbone shapes.

4. A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 1, characterized in that: The filter cover (6) is threaded onto the lower part of the filter housing (1), and a first sealing ring (9) is provided between the filter cover (6) and the filter housing (1).

5. A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 1, characterized in that: The drain valve (5) is threaded onto the lower part of the filter cover (6) via a metal threaded insert (10), and a second sealing ring (11) is provided between the drain valve (5) and the filter cover (6).

6. A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 1, characterized in that: The magnetic filter assembly (7) includes a plastic magnetic base (701) and a magnet (702). The filter lower cover (6) has a clamping groove (601) on its outer periphery. The plastic magnetic base (701) is disposed in the clamping groove (601) and is fixed by the plastic clip (13). The plastic magnetic base (701) has a number of side slots (703) arranged in a ring. Each side slot (703) is provided with a magnet (702).

7. A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 6, characterized in that: The magnet (702) is a square magnet.

8. A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 1, characterized in that: The automatic exhaust valve (8) is threaded onto the upper end of the filter housing (1) via a metal threaded insert (10).

9. A pre-filter for a water distributor with magnetic filtration and bubble-breaking functions according to claim 8, characterized in that: A third sealing ring (12) is provided between the automatic exhaust valve (8) and the filter housing (1).