A pre-filter gate valve

Abstract

The utility model provides a kind of table front filter gate valve, including table front gate valve and filter, the end of the outlet pipeline of table front gate valve is equipped with interface, the end of the access channel of filter is equipped with connecting pipe;The connecting pipe is equipped with locking member, the connecting pipe end is inserted in the interface, the locking member is connected on the interface and the connecting pipe is fixed on the interface.The table front filter gate valve is integrated into the integral structure with telescopic function by table front anti-theft gate valve and filter, can reduce installation cost and leakage risk, improve the adaptability of different pipeline reserved space when maintenance and replacement, simplify operation process, solve the defects of existing split type configuration in installation economy, sealing reliability and maintenance adaptability.

Description

Technical Field

[0001] This utility model relates to the field of water supply pipeline valve technology, and more specifically to a pre-meter filter gate valve. Background Technology

[0002] In urban residential and commercial water supply systems, water meters are the core devices for measuring water consumption. The functional configuration of their upstream pipelines directly affects water supply safety, water use compliance, and water quality assurance. To prevent illegal dismantling of water meters and circumvention of water metering, the industry commonly installs anti-theft gate valves before the water meters. These valves, with their specialized anti-theft structures, ensure controllable valve opening and closing, effectively curbing illegal water use. Simultaneously, considering that water supply pipelines are prone to contamination such as particulate matter and debris due to pipe corrosion and water source sedimentation during long-term transport, filters are typically installed in series before the water meter to prevent these impurities from entering the water meter and affecting metering accuracy or clogging downstream water terminals (such as faucets and water heaters). These filters use screens and other filtration components to trap impurities in the pipeline, ensuring the quality of water used at the terminal.

[0003] However, in the existing technology, the anti-theft gate valve and the filter before the water meter are independently designed and manufactured products. In actual applications, they need to be connected to the water meter's upstream pipeline in sequence through pipe fittings. This existing technology has the following drawbacks: 1. High installation costs and significant leakage risks. For water supply companies and pipeline construction units, separate anti-theft gate valves and filters need to be purchased and transported separately, increasing equipment procurement and logistics costs. During on-site installation, the gate valve, connecting fittings, and filter must be connected to the pipeline in sequence, which not only prolongs the installation period and increases the difficulty of manual operation, but more importantly, there are many connection points between the two and the pipeline, and between the two themselves, each of which relies on sealing components for sealing. Under long-term conditions of water pressure fluctuations, pipeline vibration, or changes in ambient temperature, the sealing performance of the connection points is prone to deterioration, leading to tap water leakage, wasting water resources, and potentially causing property damage due to water seepage into walls and floors.

[0004] 2. Poor adaptability and cumbersome operation in maintenance and replacement. During the long-term operation of water supply pipelines, water meters, anti-theft valves before the meters, or filters may require maintenance or replacement due to component aging or accidental damage. However, since anti-theft valves and filters are separate structures, the total length formed by their assembly with adjacent pipelines and water meters is fixed. The reserved space for inlet pipelines varies between different buildings, and construction errors during pipeline installation may also lead to a mismatch between the actual reserved space and the standard product combination length. When it is necessary to replace faulty components, if the total length of the new component assembly does not match the original reserved space, construction personnel often need to perform additional operations such as cutting, welding, or adding extension fittings to the original pipeline, which increases the complexity of the maintenance process. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a pre-meter filter gate valve, which integrates the pre-meter anti-theft gate valve and the filter into an integral structure with telescopic function, thereby reducing installation costs and leakage risks, improving adaptability to different pipeline reserved space during maintenance and replacement, simplifying the operation process, and solving the defects of the existing split configuration in terms of installation economy, sealing reliability and maintenance adaptability.

[0006] The technical solution of this utility model is to provide a pre-meter filter gate valve, including a pre-meter gate valve and a filter. The outlet pipe of the pre-meter gate valve is provided with an interface at its end, and the inlet channel of the filter is provided with a connecting pipe at its end. A locking member is fitted on the outside of the connecting pipe, and the end of the connecting pipe is inserted into the interface. The locking member is connected to the interface and fixes the connecting pipe to the interface.

[0007] Compared with the prior art, the pre-meter filter gate valve of this utility model has the following advantages: by connecting the pre-meter gate valve and the filter into a whole with an interface, connecting pipe and locking element, the installation steps and connection points are reduced, the installation cost and leakage risk are reduced; this structure can also be adapted to different pipeline reserved space, simplify the maintenance and replacement process, and improve the defects of the existing split configuration.

[0008] As an improvement, an annular mounting groove is provided on the inner wall of the interface port, and a retaining ring is embedded in the annular mounting groove. The retaining ring seals between the interface, the connecting pipe, and the locking component. This structure improves the sealing performance of the connection points of the interface, the connecting pipe, and the locking component, reduces the risk of water leakage due to poor sealing, and enhances the overall sealing reliability.

[0009] As an improvement, a protruding ring is provided on the outer wall of the end of the connecting pipe, and the fixing retaining ring limits the protruding ring within the interface; a sealing ring is provided between the protruding ring and the inner wall of the interface. With this structure, the connection stability between the connecting pipe and the interface can be further strengthened by limiting the protruding ring with the fixing retaining ring, preventing them from separating.

[0010] As an improvement, a limiting step is provided on the outer wall of the connecting pipe, and the distance from the end face of the connecting pipe to the limiting step is the installation distance; the limiting step is used to axially limit the locking component. With this structure, the limiting step can form a stable axial limit on the locking component, ensuring that the locking component is always kept in an effective locking position, which not only improves assembly efficiency but also ensures the stability of the connection between the connecting pipe and the interface.

[0011] As an improvement, the locking element is threaded onto the outer wall of the interface. This structure simplifies the threaded connection, allowing for quick tightening of the connecting pipe during installation and facilitating loosening during subsequent maintenance or adjustment, thus enhancing assembly and disassembly flexibility. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the pre-filter gate valve of this utility model.

[0013] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0014] As shown in the figure: gate valve 1, valve body 101, inlet pipe 102, outlet pipe 103, interface 104, annular mounting groove 105, filter 2, main body 201, inlet channel 202, outlet channel 203, filter channel 204, locking element 3, fixing retaining ring 4, sealing ring 5. Detailed Implementation

[0015] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0016] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0017] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list.

[0018] like Figure 1 and Figure 2 As shown, this utility model discloses a pre-meter filter gate valve, including a pre-meter gate valve 1 and a filter 2.

[0019] The aforementioned gate valve 1 includes a valve body 101. The valve body 101 has an inlet pipe 102 and an outlet pipe 103 at its two ends. The inlet pipe 102, the inner cavity of the valve body 101, and the outlet pipe 103 are interconnected. Fluid flows in from the inlet pipe 102, passes through the inner cavity of the valve body 101, and flows out from the outlet pipe 103. A valve is provided in the inner cavity of the valve body 101 to control the flow or closure of the fluid.

[0020] The filter 2 includes a hollow body 201. An inlet channel 202 and an outlet channel 203 are respectively provided at both ends of the body 201. A filtration channel 204 is provided between the inlet channel 202 and the outlet channel 203. The inlet channel 202, the filtration channel 204, and the outlet channel 203 are interconnected. A filter screen is provided inside the filtration channel 204. Fluid enters the body 201 through the inlet channel 202, is filtered by the filter screen of the filtration channel 204, and is discharged through the outlet channel 203.

[0021] The outlet pipe 103 of the pre-gate valve 1 is provided with an interface 104 at its end. The outer side wall of the end of the interface 104 is provided with an external thread. Different pre-gate valves 1 can be provided with interfaces 104 of different lengths, which can be set as needed.

[0022] The filter 2 has a connecting pipe 205 at the end of its inlet channel 202. A locking member 3 is fitted over the connecting pipe 205. The inner side wall of the locking member 3 has an internal thread. A limiting step 206 is provided on the outer side wall of the connecting pipe 205. The limiting step 206 is used to axially limit the locking member 3. The distance from the end face of the connecting pipe 205 to the limiting step 206 is the installation distance. A protruding ring 207 is provided on the outer side wall of the end of the connecting pipe 205.

[0023] The end of the connecting pipe 205 is inserted into the interface 104. The installation distance between the gate valve 1 and the filter 2 is adjusted by controlling the insertion depth of the end of the connecting pipe 205. The locking member 3 is threaded onto the interface 104 and fixes the connecting pipe 205 onto the interface 104.

[0024] An annular mounting groove 105 is provided on the inner wall of the interface 104 port, and a fixing retaining ring 4 is embedded in the annular mounting groove 105. The fixing retaining ring 4 seals between the interface 104, the connecting pipe 205, and the locking member 3. The fixing retaining ring 4 limits the convex ring 207 within the interface 104; a sealing ring 5 is provided between the convex ring 207 and the inner wall of the interface 104.

[0025] When the pre-meter filter gate valve of this application is in use, the fluid flows in from the inlet pipe 102 of the pre-meter gate valve 1, passes through the inner cavity of the valve body 101, and enters the connecting pipe 205 of the filter 2 through the interface 104 at the end of the outlet pipe 103. After being filtered by the filter screen in the inlet channel 202 and the filter channel 204, it flows out from the outlet channel 203. The valve can control the flow of fluid or the closing of the filter. By adjusting the insertion depth of the connecting pipe 205 in the interface 104, and cooperating with the threaded connection of the locking member 3, the pre-meter gate valve 1 and the filter 2 are fixedly installed.

[0026] The pre-meter filter gate valve provided by this utility model integrates the pre-meter gate valve 1 and the filter 2 into an integral structure with telescopic function, which effectively reduces installation costs and leakage risks. Its telescopic adjustment characteristics improve the adaptability to different pipeline reserved space during maintenance and replacement, simplify the operation process, and successfully solve the defects of the existing split configuration in terms of installation economy, sealing reliability and maintenance adaptability.

[0027] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.

Claims

1. A pre-meter filter gate valve, characterized in that: The system includes a gate valve (1) and a filter (2). The outlet pipe (103) of the gate valve (1) is provided with an interface (104) at the end, and the inlet channel (202) of the filter (2) is provided with a connecting pipe (205) at the end. The connecting pipe (205) is fitted with a locking member (3). The end of the connecting pipe (205) is inserted into the interface (104). The locking member (3) is connected to the interface (104) and fixes the connecting pipe (205) to the interface (104).

2. The pre-meter filter gate valve according to claim 1, characterized in that: The inner wall of the interface (104) port is provided with an annular mounting groove (105), and a fixing retaining ring (4) is embedded in the annular mounting groove (105). The fixing retaining ring (4) is sealed between the interface (104), the connecting pipe (205) and the locking member (3).

3. The pre-meter filter gate valve according to claim 2, characterized in that: A protruding ring (207) is provided on the outer side wall of the end of the connecting pipe (205), and the fixing retaining ring (4) limits the protruding ring (207) within the interface (104); a sealing ring (5) is provided between the protruding ring (207) and the inner wall of the interface (104).

4. The pre-meter filter gate valve according to claim 2, characterized in that: The connecting pipe (205) has a limiting step (206) on its outer side wall. The distance from the end face of the connecting pipe (205) to the limiting step (206) is the installation distance. The limiting step (206) is used to limit the locking member (3) axially.

5. The pre-meter filter gate valve according to claim 1, characterized in that: The locking element (3) is threaded onto the outer wall of the interface (104).

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