Self-sealing gate valve with filtering blowdown function

Abstract

The utility model discloses a self -sealing gate valve with filter sewage function relates to self -sealing gate valve technical field, and this device can filter the impurity in fluid, avoid the impurity adhesion on the surface of gate and lead to the service life of gate shortening, avoid the impurity accumulation and block the pipeline, the scheme is through setting filter pipeline at the import side of gate valve body, is provided with filter assembly in filter pipeline, and the filter part includes filter board, vane, connecting rod and scraper, and the filter board is installed in the pipeline body, and the connecting rod is fixedly connected in the rear portion of vane, and the connecting rod rotatory mounting is in the middle part of filter board, and the scraper is fixedly connected on the connecting rod and abuts with filter board, and the water flow passes through the filter board, and the impurity is filtered, to prevent the sealing performance of the gate that the impurity adsorbs on the gate, and vane is driven to rotate by the water flow simultaneously, and the scraper on the connecting rod is driven to rotate by vane and cleans up the impurity on filter board and prevents the pipeline from blocking.

Description

Technical Field

[0001] This utility model relates to the field of self-sealing gate valve technology, and in particular to a self-sealing gate valve with filtering and sewage discharge function. Background Technology

[0002] In modern industrial and civil water supply and drainage systems, gate valves are core devices for controlling water flow. They open and close pipelines by raising and lowering a gate, and are widely used in municipal water supply, industrial circulating water, and building water supply and drainage. As a key component of fluid control systems, the operational reliability of gate valves directly affects the stability of the entire pipeline system, and their sealing performance and service life are important indicators for measuring system efficiency. However, in practical applications, water flow is not absolutely pure and often contains various contaminants such as silt, rust, and fibrous impurities. When water flows through a gate valve, some impurities adhere to the gate's surface due to the hydrodynamic characteristics, especially at the sealing contact between the gate and the valve seat, where impurity accumulation is more pronounced. Traditional gate valves, lacking dedicated filtration devices, cannot effectively intercept these impurities, resulting in continuous contact between them and the gate. The harm caused by this impurity adhesion is gradual and cumulative. On the one hand, impurities damage the integrity of the gate's surface, accelerating metal corrosion, significantly shortening the gate's lifespan, and increasing the frequency of equipment replacement. On the other hand, accumulated impurities can cause the gate's sealing surface to not fit tightly, initially causing minor leaks, and eventually potentially leading to complete loss of sealing function.

[0003] Therefore, in order to address this deficiency in existing gate valves, it is necessary to develop self-sealing gate valves with filtration functions. Utility Model Content To address the above shortcomings, this utility model provides a filter that can filter impurities in fluids, prevent impurities from adhering to the surface of the gate and shortening its lifespan, and prevent impurities from accumulating and clogging the pipeline.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A self-sealing gate valve with filtration and sewage discharge function includes a gate valve body and a filter pipe. The filter pipe is installed on the inlet side of the gate valve body and includes an installation pipe and filter components. The installation pipe includes a pipe body with connecting flanges on both sides. The pipe body is connected to the gate valve body through the connecting flanges. The filter components include a filter plate, a turbine fan, a connecting rod, and a scraper. The filter plate is installed in the pipe body. The connecting rod is fixed to the rear of the turbine fan and rotatably installed in the middle of the filter plate. The scraper is fixed to the connecting rod and abuts against the filter plate.

[0005] Preferably, the filter component further includes positioning rods, springs, and baffles. The baffles are arranged circumferentially on the filter plate and are sealed against the inner wall of the pipe body. Multiple positioning rods are evenly installed circumferentially on the side of the filter plate away from the scraper. A first limiting ring is also provided on the side of the pipeline body connected to the gate valve body. Multiple limiting cylinders are evenly arranged circumferentially on the first limiting ring. Multiple positioning rods are slidably installed in the multiple limiting cylinders one by one. Multiple springs are fixed to the tail of the multiple positioning rods and the bottom of the limiting cylinders one by one. The pipeline body is also provided with a drain port. When the spring is in a fully compressed state, the filter plate is located after the drain port.

[0006] Preferably, there are multiple scrapers, which are circumferentially and evenly fixed to the connecting rod.

[0007] Preferably, a third limiting ring is provided at the tail of the positioning rod, and a second limiting ring is provided at the open end of the limiting cylinder, wherein the inner diameter of the second limiting ring is smaller than the outer diameter of the third limiting ring.

[0008] Preferably, a sealing ring is provided at the tail of the positioning rod.

[0009] Preferably, the filter pipe equipped with a second limiting ring and a third limiting ring is installed on the outlet side of the gate valve body.

[0010] Preferably, the connecting rod passes through the filter plate and extends a certain distance.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. A filter pipe is installed on the inlet side of the gate valve body. The filter pipe contains a filter assembly, which includes a filter plate, a vortex fan, a connecting rod, and a scraper. The filter plate is installed inside the pipe body. The connecting rod is fixed to the rear of the vortex fan and rotatably mounted in the middle of the filter plate. The scraper is fixed to the connecting rod and abuts against the filter plate. Water flows through the filter plate, and impurities are filtered out to prevent impurities from adhering to the gate plate and affecting its sealing performance. At the same time, the vortex fan is driven to rotate by the water flow. The vortex fan drives the scraper on the connecting rod to rotate and clean impurities on the filter plate to prevent pipe blockage.

[0012] 2. To facilitate the removal of impurities accumulated in the pipeline, the filter components also include positioning rods, springs, and baffles. The baffles are circumferentially mounted on the filter plate and are sealed against the inner wall of the pipeline body. Multiple positioning rods are evenly installed circumferentially on the side of the filter plate away from the scraper. A first limiting ring is also provided on the side of the pipeline body connected to the gate valve body. Multiple limiting cylinders are evenly arranged circumferentially on the first limiting ring. Multiple positioning rods are slidably installed in the multiple limiting cylinders one by one. Multiple springs are fixed one by one to the tail of the multiple positioning rods and the bottom of the limiting cylinders. The pipeline body is also provided with a drain port. When the springs are in a fully compressed state, the filter plate is located behind the drain port. After impurities clog the filter plate, the filter plate, together with the baffles, slides along the limiting cylinders and leaks out of the drain port, where water pressure flushes out the impurities. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the filter pipe in this utility model; Figure 3 This is a cross-sectional view of the filter pipe in this utility model; Figure 4 In this utility model Figure 3 View at point A; Reference numerals: 1. Gate valve body; 2. Filter pipe; 21. Installation pipe; 211. Connecting flange; 212. Pipe body; 213. First limiting ring; 214. Limiting cylinder; 215. Drain outlet; 216. Second limiting ring; 22. Filter component; 221. Filter plate; 222. Turbine fan; 223. Connecting rod; 224. Baffle; 225. Positioning rod; 226. Spring; 227. Scraper; 228. Sealing ring; 229. Third limiting ring. Detailed Implementation

[0015] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0016] 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, and 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.

[0017] 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. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] This utility model provides a self-sealing gate valve with filtration and sewage discharge function. This device can filter impurities in the fluid, preventing impurities from adhering to the gate surface and shortening the gate's lifespan, and preventing impurities from accumulating and clogging the pipeline. This function effectively intercepts and actively removes pollutants in the fluid through structural design, preventing impurities from entering the sealing contact between the gate and the valve seat, reducing the corrosion and wear of impurities on the gate surface structure from the source, and effectively improving the sealing reliability and operational stability of the gate valve system.

[0019] like Figures 1-4 As shown, the device includes a gate valve body 1 and a filter pipe 2, which is installed on the inlet side of the gate valve body 1. This setup allows for pretreatment of the inlet fluid, intercepting large particulate impurities in advance to prevent them from entering the main valve body and causing blockage and damage. This ensures filtration effectiveness while reducing the maintenance frequency of the main valve and improving the continuity of system operation. The filter pipe 2 includes an installation pipe 21 and a filter component 22. The installation pipe 21 includes a pipe body 212, with connecting flanges 211 on both sides. The pipe body 212 is connected to the gate valve body 1 through the connecting flanges 211. The flange connection enables modular installation and disassembly, facilitating maintenance and replacement, and is particularly suitable for rapid deployment on-site and subsequent cleaning operations. The filter component 22 includes a filter plate 221, a turbine fan 222, a connecting rod 223, and a scraper 227. The filter plate 221 is installed inside the pipe body 212. The filter plate 221 allows the water flow to pass through a physical barrier before entering the gate valve body 1, intercepting most of the particulate impurities, achieving filtration, reducing the probability of foreign objects entering the gate sealing surface and causing wear and interference, thereby extending the working life of the gate valve sealing assembly.

[0020] The connecting rod 223 is fixed to the rear of the turbine fan 222 and is rotatably mounted in the middle of the filter plate 221. The scraper 227 is fixed to the connecting rod 223 and abuts against the filter plate 221. This structural design allows the water flow to generate rotational power when passing through the turbine fan 222, and the rotational force is transmitted to the scraper 227 through the connecting rod 223, thereby realizing the continuous rotational motion of the scraper 227, effectively scraping away impurities attached to the surface of the filter plate 221, and preventing the filter holes from being blocked, which would lead to poor water flow.

[0021] Preferably, the filter component 22 further includes a positioning rod 225, a spring 226, and a baffle 224. The baffle 224 is circumferentially arranged on the filter plate 221 and is in sealing contact with the inner wall of the pipe body 212. By setting the sealing contact between the circumferential baffle 224 and the inner wall, a stable movable filter unit can be formed. Multiple positioning rods 225 are evenly installed on the side of the filter plate 221 away from the scraper 227. The evenly distributed positioning rods 225 can maintain the stability of the filter plate 221 in the moving path during sliding, avoiding jamming or deformation of the filter plate 221 due to unilateral force deviation. A first limiting ring 213 is also provided on the side of the pipe body 212 connected to the gate valve body 1. Multiple limiting cylinders 214 are evenly arranged on the first limiting ring 213. This structure can form a track to limit the movement range of the filter plate 221, so that the filter plate 221 needs to slide along the water flow direction. Multiple positioning rods 225 are slidably installed in multiple limiting cylinders 214, and multiple springs 226 are fixedly connected to the tails of the positioning rods 225 and the bottoms of the limiting cylinders 214. The pipe body 212 is also provided with a drain port 215. When the springs 226 are in a fully compressed state, the filter plate 221 is located behind the drain port 215. The drain port 215 serves as a physical channel for the discharge of impurities. After the filter plate 221 moves backward, it forms an open opening, and the accumulated impurities are directly flushed out of the device by the flow energy of water, avoiding frequent manual disassembly and cleaning and reducing labor maintenance costs. Through the cooperation of the springs 226 and the limiting cylinders 214, the filter plate 221 can be maintained in the default filtration position when there is no impurity blockage. When impurities accumulate and back pressure is generated, the springs 226 are compressed under the action of water pressure, pushing the filter assembly to move backward and expose the drain port 215, realizing the automatic sewage discharge function. After the water pressure is restored, the springs 226 reset and drive the filter plate 221 back to the initial position, thus constructing an adaptive impurity discharge mechanism.

[0022] There are multiple scrapers 227, which are evenly fixed to the connecting rod 223 in a circumferential direction. Multiple scrapers 227 can better remove impurities. The design of multiple scrapers 227 increases the cleaning frequency and contact coverage, so that the filter plate 221 can be scraped clean more efficiently per unit time.

[0023] The positioning rod 225 is provided with a third limiting ring 229 at its tail end, and the limiting cylinder 214 is provided with a second limiting ring 216 at its open end. The inner diameter of the second limiting ring 216 is smaller than the outer diameter of the third limiting ring 229. This structural combination can effectively prevent the filter plate 221 and the positioning rod 225 from being carried away from the limiting structure by the water flow due to backflow or pressure fluctuations, thereby improving the structural safety of the device under bidirectional water flow. This allows the device to be installed on both the inlet and outlet sides of the gate valve, meeting the application scenarios of bidirectional flow systems and improving its versatility.

[0024] The positioning rod 225 is equipped with a sealing ring 228 at its tail to prevent water from entering the limiting cylinder 214 and affecting the life of the spring 226. The ring blocks water from contacting the spring 226, preventing the performance of the spring 226 from deteriorating due to prolonged immersion or corrosion, thereby ensuring the reliability of its reset function and long-term stable operation.

[0025] The connecting rod 223 passes through the filter plate 221 and extends a certain distance; the extended structure strengthens the structural stability of the connecting rod 223 under stress, and improves the structural strength and durability of the whole machine.

[0026] 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 variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A self-sealing gate valve with a filtering and decontamination function, comprising a gate valve body (1), characterized in that: It also includes a filter pipe (2), which is installed on the inlet side of the gate valve body (1). The filter pipe (2) includes an installation pipe (21) and a filter component (22). The installation pipe (21) includes a pipe body (212). Connecting flanges (211) are provided on both sides of the pipe body (212). The pipe body (212) is connected to the gate valve body (1) through the connecting flanges (211). The filter component (22) includes a filter plate (221), a turbine fan (222), a connecting rod (223), and a scraper (227). The filter plate (221) is installed inside the pipe body (212). The connecting rod (223) is fixed to the rear of the turbine fan (222). The connecting rod (223) is rotatably installed in the middle of the filter plate (221). The scraper (227) is fixed to the connecting rod (223) and abuts against the filter plate (221).

2. The self-sealing gate valve with filter and blowdown function according to claim 1, characterized in that: The filter component (22) also includes a positioning rod (225), a spring (226) and a baffle (224). The baffle (224) is circumferentially arranged on the filter plate (221). The baffle (224) is in sealed contact with the inner wall of the pipe body (212). The positioning rod (225) is multiple and circumferentially evenly installed on the side of the filter plate (221) away from the scraper (227). A first limiting ring (213) is also provided on the side of the pipe body (212) connected to the gate valve body (1). A plurality of limiting cylinders (214) are evenly arranged on the first limiting ring (213) in the circumferential direction. A plurality of positioning rods (225) are slidably installed in the plurality of limiting cylinders (214) in a corresponding manner. A plurality of springs (226) are fixedly connected to the tail of the plurality of positioning rods (225) and the bottom of the limiting cylinders (214) in a corresponding manner. The pipe body (212) is also provided with a drain port (215). When the spring (226) is in a fully compressed state, the filter plate (221) is located after the drain port (215).

3. The self-sealing gate valve with filter and blowdown function according to claim 1, characterized in that: There are multiple scrapers (227), and the multiple scrapers (227) are circumferentially and uniformly fixed to the connecting rod (223).

4. The self-sealing gate valve with filter and blowdown function according to claim 2, characterized in that: The positioning rod (225) is provided with a third limiting ring (229) at its tail end, and the limiting cylinder (214) is provided with a second limiting ring (216) at its open end. The inner diameter of the second limiting ring (216) is smaller than the outer diameter of the third limiting ring (229).

5. The self-sealing gate valve with filter and blowdown function according to claim 2, characterized in that: The positioning rod (225) is provided with a sealing ring (228) at its tail.

6. The self-sealing gate valve with filter and blowdown function according to claim 4, characterized in that: The filter pipe (2), which is equipped with the second limiting ring (216) and the third limiting ring (229), is installed on the outlet side of the gate valve body (1).

7. A self-sealing gate valve with filtering and sewage discharge function according to claim 1, characterized in that: The connecting rod (223) passes through the filter plate (221) and extends a distance.

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