A filter structure for use in a valve

Abstract

The utility model discloses a filter structure for in valve, including valve body, the valve body is equipped with water inlet and water outlet, and the water inlet is equipped with filter structure, the filter structure includes filter assembly, scrape off subassembly, collection subassembly, the utility model forms a kind of novel filter structure in valve, and the impurity adhered is scraped off by motor drive scraping frame rotation, simultaneously, the covering area of scraping frame can reduce water flow impact, avoid that impurity is reabsorbed by water flow, and the impurity collected in scraping frame interior is directly guided to collection groove by stainless steel communicating pipe, forms scraping, flow guide, collection in a filter structure, guarantees the filtration effect of water valve.

Description

Technical Field

[0001] This utility model relates to the field of valve filtration technology, specifically to a filtration structure for use inside a valve. Background Technology

[0002] A self-operated differential pressure control valve is a valve that automatically adjusts its own pressure, and the filter structure is a key component. In the prior art, in order to solve the problem of impurities clogging the valve, some valves adopt a scraper-type anti-clogging structure. For example, the "A self-operated differential pressure control valve and control method" disclosed in Chinese Patent No. CN114135702A, which drives the scraper to rotate and scrape off impurities on the surface of the filter screen.

[0003] The scraper-type anti-clogging structure used in valves is prone to backflow and adsorption of impurities. Because the water flow inside the valve is fast, the impurities scraped off by the scraper are easily re-adsorbed onto the filter screen surface by the water flow and the rotational inertia of the scraper, and cannot be completely removed from the filtration area. Its impurity collection efficiency is low. The high-speed water flow will impact the scraped impurities, making it difficult for them to accumulate. They may even be carried into other components inside the valve by the water flow, causing secondary blockage.

[0004] To address the aforementioned issues, there is an urgent need to design a novel internal valve filtration structure to effectively filter and remove impurities without affecting the normal operation of the valve. Utility Model Content

[0005] To address the problems mentioned in the background art, the technical solution adopted by this utility model is: a filter structure for use inside a valve, applied within the valve body, wherein the valve body has an inlet and an outlet, and the inlet contains a filter structure, the filter structure comprising:

[0006] Filter assembly: includes a sealing ring seat and a filter screen plate. The sealing ring seat is fixed at the connection between the inlet and outlet of the valve body. The filter screen plate is detachably connected to the bottom of the sealing ring seat and faces the inlet by screws, and is used to intercept impurities in the water flow.

[0007] Scraping assembly: includes a motor, a rotating rod, a support plate, a connecting pipe, and a scraper frame. The motor is fixedly installed on the outer side of the bottom end of the valve body. One end of the rotating rod is fixedly connected to the output end of the motor, and the other end extends into the interior of the valve body. The support plate is fixed on the side of the rotating rod away from the motor. The connecting pipe is vertically fixed to the top of the support plate. The scraper frame is fixed to the top of the connecting pipe, and the top of the scraper frame slides in contact with the bottom of the filter screen plate to scrape off impurities attached to the filter screen plate.

[0008] Collection assembly: includes a collection tank, a first drain outlet, a second drain outlet, and a sealing plug. The collection tank is located at the bottom of the valve body, directly opposite the filter screen. The rotating rod, support plate, connecting pipe, and scraper frame are all located inside the collection tank. The first drain outlet and the second drain outlet are respectively located on both sides of the bottom of the collection tank. The sealing plug is threadedly connected to the drain outlet to control the discharge of impurities from the collection tank.

[0009] Furthermore, the connecting pipe is made of stainless steel, with its top end connected to the inside of the scraper frame and its bottom end penetrating through the support plate and connected to the inside of the collection tank, forming a guide channel for impurities to flow from the scraper frame to the collection tank, thus preventing impurities from accumulating inside the scraper frame.

[0010] Furthermore, a bearing and a sealing ring are provided at the connection between the rotating rod and the bottom end of the valve body. The bearing is used to reduce the rotational friction of the rotating rod and ensure rotational stability; the sealing ring is used to seal the gap between the rotating rod and the valve body to prevent water leakage.

[0011] Furthermore, the number of scraper frames is at least two, and they are symmetrically distributed on both sides of the rotating rod. By rotating multiple scraper frames synchronously, the impurity removal coverage of the filter screen is improved, and the single cleaning cycle is shortened.

[0012] Furthermore, the filter screen adopts a stainless steel porous structure with a pore size of 0.5-2mm, which balances filtration accuracy and water flow rate, and avoids excessive water flow resistance due to excessively small pore size.

[0013] This utility model has the following advantages:

[0014] This invention forms a novel filtration structure within a valve. The scraper frame is continuously rotated by a motor, and the top of the scraper frame is in close contact with the bottom of the filter screen, which can remove attached impurities. At the same time, the area covered by the scraper frame can reduce the impact of water flow and prevent impurities from being re-adsorbed by the water flow. Furthermore, the impurities collected inside the scraper frame are directly guided to the collection tank through a stainless steel connecting pipe, forming a filtration structure that integrates scraping, guiding, and collection. Attached Figure Description

[0015] Figure 1 is a schematic cross-sectional view of the assembly structure of the filter structure used in the valve and the valve body of this utility model. Figure 2 Figure 3 is a three-dimensional structural diagram of the scraping component and the filter screen of this utility model; Figure 4 is a schematic diagram of the connection structure of the scraping component of this utility model.

[0016] In the diagram: 1 - Valve body, 2 - Inlet, 3 - Outlet, 4 - Sealing ring seat, 5 - Filter screen, 6 - Collection tank, 7 - Motor, 8 - First drain outlet, 9 - Second drain outlet, 10 - Sealing plug, 11 - Bearing, 12 - Sealing ring, 13 - Rotating rod, 14 - Support plate, 15 - Connecting pipe, 16 - Scraper frame, 17 - Telescopic valve core. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] As shown in Figures 1-3, a filter structure for use in a control valve includes a valve body 1. One end of the valve body 1 has an inlet 2, and the other end has an outlet 3. A retractable valve core 17 is provided inside the valve to control the flow of water from the inlet 2 to the outlet 3. The inlet 2 also contains a filter structure, which includes:

[0021] Filter assembly: The sealing ring seat 4 is welded and fixed to the connection between the inlet 2 and the outlet 3 of the valve body 1 to ensure that the sealing ring seat 4 fits seamlessly with the inner wall of the valve body 1; the stainless steel filter screen 5 is fixed to the bottom of the sealing ring seat 4 with screws, and the filter screen 5 completely covers the water flow channel of the inlet 2 to intercept impurities in the water flow.

[0022] Scraping assembly: Motor 7 is fixed to the outer bottom of valve body 1 with bolts. Motor 7 is a waterproof stepper motor, suitable for the humid environment inside the valve. One end of rotating rod 13 is fixed to the output end of motor 7 with a coupling, and the other end passes through the bottom of valve body 1 and extends into the collection tank 6. Bearing 11 and sealing ring 12 are installed in sequence at the penetration point between rotating rod 13 and valve body 1. Bearing 11 is a deep groove ball bearing to reduce rotational friction, and sealing ring 12 is made of nitrile rubber to ensure sealing performance. Support plate 14 is welded to one side of rotating rod 13 inside collection tank 6. Stainless steel connecting pipe 15 is vertically welded to the top of support plate 14. Scraping frame 16 is welded to the top of connecting pipe 15. The top of scraping frame 16 slides in contact with the bottom of filter screen plate 5, and there are two scraping frames 16, symmetrically distributed on both sides of rotating rod 13.

[0023] Collection component: A collection groove 6 is provided at the bottom of the valve body 1, directly opposite the filter screen plate 5. The volume of the collection groove 6 is 50-100mL to ensure that a certain amount of impurities can be temporarily stored. A first drain port 8 and a second drain port 9 are respectively provided on both sides of the bottom of the collection groove 6. The inner diameter of the drain port is 10-15mm to facilitate the rapid discharge of impurities. The sealing plug 10 is threaded to the drain port, and the surface of the sealing plug 10 is wrapped with PTFE tape to improve the sealing effect.

[0024] In operation, water flows into the valve body 1 through inlet 2, first passing through the filter screen 5, where impurities are intercepted. The filtered water then continues to flow to outlet 3. The motor 7 is then started, driving the rotating rod 13 to rotate at 10-20 r / min. The rotating rod 13 drives the support plate 14, connecting pipe 15, and scraper frame 16 to rotate synchronously. The top of the scraper frame 16 slides against the bottom of the filter screen 5, continuously scraping away impurities adhering to the filter screen 5, preventing clogging of the filter screen 5's pores. Simultaneously, the water flow velocity in the area covered by the scraper frame 16 is significantly reduced due to the blocking effect, making it difficult for impurities to be impacted and diffused by the water flow, gradually accumulating inside the scraper frame 16, thus achieving impurity removal. The impurities accumulated inside the scraper frame 16 fall into the collection tank 6 through the connecting pipe 15 under gravity, achieving impurity collection. When the impurities in the collection tank 6 accumulate to half its volume, the valve body 1 is closed. For the water inlet valve, unscrew the sealing plug 10. Impurities will be discharged from the first drain port 8 or the second drain port 9. After discharge, tighten the sealing plug 10 again to restore valve operation and achieve impurity discharge.

[0025] This filter structure is compatible with various types of water control valves, such as self-operated differential pressure control valves, gate valves, and globe valves. Flexible installation can be achieved simply by adjusting the specifications of the sealing ring seat and the collection tank according to the valve body size.

[0026] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0027] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filter structure for use within a valve, comprising a valve body, the valve body having an inlet and an outlet, and a filter structure disposed within the inlet, the filter structure comprising: Filter assembly: includes a sealing ring seat and a filter screen plate. The sealing ring seat is fixed at the connection between the inlet and outlet of the valve body. The filter screen plate is detachably connected to the bottom of the sealing ring seat and faces the inlet side by screws. Scraping assembly: includes a motor, a rotating rod, a support plate, a connecting pipe, and a scraper frame. The motor is fixedly installed on the outer side of the bottom end of the valve body. One end of the rotating rod is fixedly connected to the output end of the motor, and the other end extends into the interior of the valve body. The support plate is fixed on the side of the rotating rod away from the motor. The connecting pipe is vertically fixed to the top of the support plate. The scraper frame is fixed to the top of the connecting pipe, and the top of the scraper frame slides in contact with the bottom of the filter screen. Collection components include a collection tank, a first drain outlet, a second drain outlet, and a sealing plug. The collection tank is located at the bottom of the valve body, directly opposite the filter screen. The rotating rod, support plate, connecting pipe, and scraper frame are all located inside the collection tank. The first drain outlet and the second drain outlet are respectively located on both sides of the bottom of the collection tank.

2. The filter structure for use within a valve as described in claim 1, characterized in that, The connecting pipe is made of stainless steel, with its top end connected to the inside of the scraper frame and its bottom end passing through the support plate and connected to the inside of the collection tank.

3. A filter structure for use within a valve as described in claim 1, characterized in that, The connection between the rotating rod and the bottom of the valve body is equipped with a bearing and a sealing ring.

4. A filter structure for use within a valve as described in claim 1, characterized in that, The number of scraper frames is at least two, and they are symmetrically distributed on both sides of the rotating rod.

5. A filter structure for use within a valve as described in claim 1, characterized in that, The filter screen is made of stainless steel with a porous structure and a pore size of 0.5-2mm.

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