Double-filtering stop valve

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a double-filter stop valve which comprises a valve body, a closed valve cover is mounted at the top of the valve body, a valve rod is in threaded connection with the interior of the closed valve cover, a partition seat is fixedly mounted in the valve body, a closed opening is formed in the top of the partition seat, and a valve rod is arranged in the closed valve cover. A closing opening is formed in the valve rod, a closing valve clack is mounted in the closing opening, a mounting hole is formed in the bottom of the closing valve clack, a telescopic assembly is arranged in the mounting hole, and a first filter plate is mounted at the bottom of the telescopic assembly. The closing valve clack moves upwards to open the closing opening, so that liquid flows into the liquid outlet cavity from the liquid inlet cavity, the connecting rod moves upwards to extrude the extrusion spring, the first filter plate moves upwards to abut against the bottom of the closing opening, the liquid flowing through the closing opening is filtered, and the effect of filtering the liquid conveyed in the valve body is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of shut-off valve technology, specifically a dual-filter shut-off valve. Background Technology

[0002] The gate valve's opening and closing element is a plug-shaped valve disc, with a flat or conical sealing surface. The valve disc moves linearly along the centerline of the valve seat. Relying on the pressure of the valve stem, the valve disc sealing surface and the valve seat sealing surface are tightly fitted together, preventing the flow of media and allowing only unidirectional flow.

[0003] For dual filter shut-off valves, existing technologies exist, such as:

[0004] Chinese Patent Publication No. CN215928401U discloses a filter-type double-seal stop valve, comprising a valve body and connecting flanges. Both ends of the valve body are welded with connecting flanges, and a blocking device is installed inside the valve body. This filter-type double-seal stop valve, through the cooperation of structures such as a first filter screen, a second filter screen, a valve stem, a valve disc, and a fluoropolymer-lined gasket, filters water through the first and second filter screens. The cooperation of structures such as the disc, sealing gasket, and vertical rod ensures that the valve stem always moves vertically, while the sealing gasket improves the sealing performance at the valve stem.

[0005] The above-mentioned device filters the liquid flowing into the shut-off valve by installing filter screens at both the inlet and outlet of the shut-off valve, thus preventing impurities from accumulating and clogging the valve. However, after the two filter screens in the shut-off valve have been filtering impurities for a long time, the surface of the filter screens will also be blocked by impurities, which will cause the liquid to flow slowly in the shut-off valve and affect the flow rate of the liquid. Therefore, a dual-filter shut-off valve is proposed to address the above problem. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and address the problems existing in current equipment, this utility model proposes a dual-filter shut-off valve.

[0007] The technical solution adopted by this utility model to solve its technical problem is a dual-filter shut-off valve, including a valve body, a closing valve cover installed on the top of the valve body, a valve stem connected internally to the closing valve cover by threads, a partition seat fixedly installed inside the valve body, a closing opening opened on the top of the partition seat, a closing valve disc installed inside the closing opening, the bottom of the valve stem penetrating into the interior of the valve body and fixedly installed on the top of the closing valve disc, an installation hole opened at the bottom of the closing valve disc, a telescopic component provided inside the installation hole, a first filter plate installed at the bottom of the telescopic component, and the telescopic component being used to drive the first filter plate to move up and down;

[0008] The valve body is divided into an inlet chamber and an outlet chamber by a partition seat. A docking block is installed at the bottom of the outlet chamber, and a pin is fixedly installed on the top of the docking block. The docking block is located directly below the first filter plate, and a collection component is provided on the outer surface of the docking block for collecting filtered impurities.

[0009] Preferably, the telescopic assembly includes a limiting ring fixedly installed at the bottom of the inner wall of the mounting hole, a connecting rod slidably installed inside the limiting ring, a connecting ring fixedly installed on the top of the connecting rod, a compression spring sleeved on the outer surface of the connecting rod, and the connecting rod being able to move up and down inside the mounting hole.

[0010] Preferably, the top of the inner wall of the mounting hole penetrates the closing valve disc and extends into the interior of the valve stem; the top of the compression spring is mounted on the bottom of the connecting ring; the bottom of the compression spring is mounted on the top of the limiting ring; and the bottom of the connecting rod is fixedly mounted on the top of the first filter plate to drive the first filter plate to move up and down together.

[0011] Preferably, the collecting assembly includes a drain hole at the bottom of the valve body, the top of the inner wall of the drain hole extending into the interior of the valve body, a threaded sleeve fixedly installed at the bottom of the valve body, and a closing cap threadedly connected to the outer surface of the threaded sleeve.

[0012] Preferably, the leakage hole is located on the outside of the docking block, and the leakage hole is used to collect filtered impurities.

[0013] Preferably, a second filter plate is fixedly installed on the inner wall of the liquid outlet chamber, and the second filter plate is used to filter the liquid filtered by the first filter plate again.

[0014] The beneficial effects of this utility model are:

[0015] 1. By rotating the valve stem, this utility model can drive the closing valve disc, connecting rod and first filter plate to move upward together. The upward movement of the closing valve disc can open the closing port, allowing liquid to flow from the inlet chamber to the outlet chamber. The upward movement of the connecting rod compresses the compression spring, causing the first filter plate to move upward and press against the bottom of the closing port, thus filtering the liquid flowing through the closing port, achieving the effect of filtering the liquid transported in the valve body.

[0016] 2. This utility model uses reverse rotation of the valve stem to move the closing valve disc, connecting rod, and first filter plate downwards. The closing valve disc moves downwards and abuts against the closing port, closing the port and stopping the flow of liquid. The connecting rod and the first filter plate move downwards so that the first filter plate can fit against the pin at the top of the docking block, filtering the filter holes of the first filter plate and preventing the first filter plate from being blocked, thus achieving the effect of filtering the first filter plate.

[0017] 3. This utility model uses a leak hole at the bottom of the valve body to collect the cleaned impurities. The collected impurities can be processed by unscrewing the closing cap, thus achieving the effect of collecting and processing the filtered impurities. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the valve stem structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the separator structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the liquid inlet and liquid outlet structures of this utility model;

[0023] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 For the present utility model Figure 4 Enlarged structural diagram at point B.

[0025] Legend:

[0026] In the diagram: 1. Valve body; 11. Closed valve cover; 12. Valve stem; 2. Divider seat; 21. Closing port; 3. Closing valve disc; 31. Mounting hole; 4. Telescopic assembly; 401. Limiting ring; 402. Connecting rod; 403. Connecting ring; 404. Compression spring; 5. First filter plate; 6. Inlet chamber; 7. Outlet chamber; 71. Connecting block; 72. Pin; 8. Collection assembly; 801. Leakage hole; 802. Threaded sleeve; 803. Closing cap; 9. Second filter plate. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-6 As shown, a dual-filter shut-off valve includes a valve body 1, a closing valve cover 11 installed on the top of the valve body 1, a valve stem 12 threadedly connected to the inside of the closing valve cover 11, a partition seat 2 fixedly installed inside the valve body 1, a closing opening 21 opened on the top of the partition seat 2, a closing valve disc 3 installed inside the closing opening 21, the bottom of the valve stem 12 penetrating into the inside of the valve body 1 and fixedly installed on the top of the closing valve disc 3, a mounting hole 31 opened at the bottom of the closing valve disc 3, a telescopic component 4 disposed inside the mounting hole 31, a first filter plate 5 installed at the bottom of the telescopic component 4, and the telescopic component 4 being used to drive the first filter plate 5 to move up and down.

[0029] The interior of the valve body 1 is divided into an inlet chamber 6 and an outlet chamber 7 by a partition seat 2. A docking block 71 is installed at the bottom of the outlet chamber 7, and a pin 72 is fixedly installed on the top of the docking block 71. The docking block 71 is located directly below the first filter plate 5, and a collection component 8 is provided on the outer surface of the docking block 71 for collecting the filtered impurities.

[0030] Furthermore, the partition seat 2 installed inside the valve body 1 divides the internal space of the valve body 1 into an inlet chamber 6 and an outlet chamber 7. The liquid to be circulated enters the interior of the valve body 1 from the inlet chamber 6, flows out through the closed opening 21 at the top of the partition seat 2, and exits into the outlet chamber 7. The bottom of the valve stem 12 extends through the closed valve cover 11 and is fixedly installed inside the valve body 1 with a closed valve disc 3. By rotating the valve stem 12, the valve stem 12 rotates within the closed valve cover 11, causing the closed valve disc 3 to move up and down inside the valve body 1. When the bottom of the closed valve disc 3 abuts against the top of the closed opening 21 and cannot move further downward, the closed opening 21 can be closed. When liquid needs to be transported, the valve stem 12 is rotated in the opposite direction, causing the closed valve disc 3 to move upward, exposing the closed opening 21 to allow liquid to flow. An installation hole is provided at the bottom of the closed valve disc 3. 31, allowing the telescopic component 4 to be installed inside the mounting hole 31, and allowing the bottom of the telescopic component 4 to pass through the closing opening 21 to connect to the first filter plate 5. Thus, when the valve stem 12 drives the closing valve disc 3 to move up and down, it can also drive the first filter plate 5 to move up and down. At the same time, when the valve stem 12 moves upward, the first filter plate 5 moves upward together and abuts against the bottom of the closing opening 21, which can filter the liquid flowing into the liquid outlet chamber 7 through the closing opening 21, achieving the effect of filtering the flowing liquid. Furthermore, a docking block 71 is installed at the bottom of the first filter plate 5, and multiple pins 72 installed on the top of the docking block 71 correspond to the filter holes opened on the first filter plate 5. When the first filter plate 5 moves downward and abuts against the docking block 71, the filter holes of the first filter plate 5 can be cleaned, preventing the first filter plate 5 from being blocked.

[0031] First, considering how to connect the first filter plate 5 and move it up and down, the following is presented: Figures 2-5The specific structure of the telescopic component 4 is disclosed. The telescopic component 4 includes a limiting ring 401 fixedly installed at the bottom of the inner wall of the mounting hole 31. A connecting rod 402 is slidably installed inside the limiting ring 401. A connecting ring 403 is fixedly installed on the top of the connecting rod 402. A compression spring 404 is sleeved on the outer surface of the connecting rod 402. The connecting rod 402 can move up and down inside the mounting hole 31.

[0032] The top of the inner wall of the mounting hole 31 penetrates the closed valve disc 3 and extends into the interior of the valve stem 12. The top of the compression spring 404 is mounted on the bottom of the connecting ring 403, and the bottom of the compression spring 404 is mounted on the top of the limiting ring 401. The bottom of the connecting rod 402 is fixedly mounted on the top of the first filter plate 5 to drive the first filter plate 5 to move up and down together.

[0033] Furthermore, by creating a mounting hole 31 at the bottom of the closing valve disc 3, penetrating into the valve stem 12, a connecting ring 403 can be fixedly mounted on the top of the connecting rod 402 inside the mounting hole 31. A compression spring 404 is sleeved on the outer surface of the connecting rod 402 located inside the mounting hole 31. The top of the compression spring 404 is fixed to the bottom of the connecting ring 403, and the bottom is fixed to the top of the limiting ring 401. This allows the compression spring 404 to provide an upward compressive force to the connecting rod 402. When the valve stem 12 and the closing valve disc 3 pull the connecting rod 402 and the first filter plate 5 upward to open the closing opening 21, the first filter plate 5 will be unable to move upward against the bottom of the closing opening 21. At this time, the connecting plate will be pulled downward together, exerting a downward compressive force on the compression spring 404. 04 Press down to make the first filter plate 5 fit against the bottom of the closed opening 21, filtering the liquid flowing through the closed opening 21. When the valve body 1 is closed, the valve stem 12 rotates, driving the closing valve disc 3, connecting rod 402 and the first filter plate 5 to move downward. The closing valve disc 3 fits against the top of the closed opening 21 to close the closed opening 21. The connecting rod 402 and connecting ring 403 no longer squeeze the compression spring 404. The first filter plate 5 moves downward to the top of the docking block 71, so that the ejector pin 72 can clean the filter holes of the first filter plate 5, achieving the effect of filtering the liquid flowing into the valve body 1 and cleaning the first filter plate 5 after filtration, avoiding the first filter plate 5 from being blocked by impurities and affecting the liquid flow rate.

[0034] Secondly, considering the problem that impurities filtered by the first filter plate 5 accumulate inside the valve body 1 and affect the quality of the liquid water, the following is provided: Figure 4 and Figure 6The specific structure of the collection component 8 is disclosed. The collection component 8 includes a leakage hole 801 opened at the bottom of the valve body 1. The top of the inner wall of the leakage hole 801 extends into the interior of the valve body 1. A threaded sleeve 802 is fixedly installed at the bottom of the valve body 1. A closing cap 803 is threadedly connected to the outer surface of the threaded sleeve 802. The leakage hole 801 is located outside the docking block 71 and is used to collect filtered impurities.

[0035] Furthermore, by opening a leakage hole 801 at the bottom of the valve body 1, penetrating into the interior of the valve body 1, and the leakage hole 801 being located on the outside of the mating block 71, the impurities cleaned by the ejector pin 72 can fall into the leakage hole 801 in the recess of the valve body 1 for collection. A threaded sleeve 802 is fixedly installed at the bottom of the valve body 1, allowing the closing cap 803 to be threadedly connected to the outer surface of the threaded sleeve 802 to close the leakage hole 801. This does not affect the liquid delivery of the valve body 1. When the valve body 1 is not working, unscrewing the closing cap 803 allows the impurities accumulated in the leakage hole 801 to flow out, cleaning the interior of the valve body 1 and achieving the effect of collecting the filtered impurities.

[0036] Finally, considering the issue of residual impurities accumulating in the outlet chamber 7 flowing out from it, a [details omitted]. Figure 4 A second filter plate 9 is fixedly installed on the inner wall of the liquid outlet chamber 7. The second filter plate 9 is used to filter the liquid filtered by the first filter plate 5 again.

[0037] By installing a second filter plate 9 on the inner wall of the liquid outlet chamber 7, the liquid filtered by the first filter plate 5 can be filtered again, and the impurities filtered and cleaned by the first filter plate 5 can be collected to prevent impurities from escaping.

[0038] It should be noted that the first filter plate 5 produces less impurities in the filtered liquid, which can minimize the risk of clogging the second filter plate 9.

[0039] In summary, the working principle of this utility model is as follows:

[0040] When using valve body 1, the inlet chamber 6 and outlet chamber 7 are connected to the pipeline. Rotating valve stem 12 causes the closing valve disc 3, connecting rod 402, and first filter plate 5 to move upward together. The upward movement of closing valve disc 3 opens the closing port 21, allowing liquid to flow from the inlet chamber 6 to the outlet chamber 7. The upward movement of connecting rod 402 compresses the compression spring 404, causing the first filter plate 5 to move upward and press against the bottom of the closing port 21, filtering the liquid flowing through the closing port 21. This achieves the effect of filtering the liquid transported within valve body 1, without the need for... When liquid needs to be transported, the valve stem 12 is rotated in the reverse direction, causing the closing valve disc 3, connecting rod 402 and the first filter plate 5 to move downward. The closing valve disc 3 moves downward and abuts against the closing port 21, closing the closing port 21 and stopping the flow of liquid. The connecting rod 402 and the first filter plate 5 move downward, so that the compression spring 404 is no longer compressed by the connecting rod 402. The first filter plate 5 can fit against the ejector pin 72 at the top of the docking block 71 to filter the filter holes of the first filter plate 5, avoiding the first filter plate 5 from being blocked, and achieving the effect of filtering the first filter plate 5.

[0041] The leakage hole 801 at the bottom of the valve body 1 can collect the cleaned impurities. The collected impurities can be processed by unscrewing the closing cap 803, thus achieving the effect of collecting and processing the filtered impurities. At the same time, the second filter plate 9 in the liquid outlet chamber 7 can filter the liquid again and prevent the cleaned impurities from flowing out.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A dual-filter shut-off valve, comprising a valve body (1), wherein a closed valve cover (11) is mounted on the top of the valve body (1), and a valve stem (12) is internally threaded onto the closed valve cover (11), characterized in that: A partition seat (2) is fixedly installed inside the valve body (1). A closing opening (21) is provided at the top of the partition seat (2). A closing valve disc (3) is installed inside the closing opening (21). The bottom of the valve stem (12) penetrates into the interior of the valve body (1) and is fixedly installed at the top of the closing valve disc (3). An installation hole (31) is provided at the bottom of the closing valve disc (3). A telescopic component (4) is provided inside the installation hole (31). A first filter plate (5) is installed at the bottom of the telescopic component (4). The telescopic component (4) is used to drive the first filter plate (5) to move up and down. The interior of the valve body (1) is divided into an inlet chamber (6) and an outlet chamber (7) by a partition seat (2). A docking block (71) is installed at the bottom of the outlet chamber (7), and a pin (72) is fixedly installed on the top of the docking block (71). The docking block (71) is located directly below the first filter plate (5). A collection component (8) is provided on the outer surface of the docking block (71) for collecting the filtered impurities.

2. The dual filter shut-off valve according to claim 1, characterized in that: The telescopic assembly (4) includes a limiting ring (401) fixedly installed at the bottom of the inner wall of the mounting hole (31), a connecting rod (402) slidably installed inside the limiting ring (401), a connecting ring (403) fixedly installed at the top of the connecting rod (402), a compression spring (404) sleeved on the outer surface of the connecting rod (402), and the connecting rod (402) can move up and down inside the mounting hole (31).

3. The dual filter shut-off valve according to claim 2, characterized in that: The top of the inner wall of the mounting hole (31) passes through the closed valve disc (3) and extends into the interior of the valve stem (12). The top of the compression spring (404) is installed at the bottom of the connecting ring (403), and the bottom of the compression spring (404) is installed at the top of the limiting ring (401). The bottom of the connecting rod (402) is fixedly installed at the top of the first filter plate (5) to drive the first filter plate (5) to move up and down together.

4. The dual filter shut-off valve according to claim 1, characterized in that: The collecting component (8) includes a drain hole (801) opened at the bottom of the valve body (1), the top of the inner wall of the drain hole (801) extends into the interior of the valve body (1), and a threaded sleeve (802) is fixedly installed at the bottom of the valve body (1), and a closing cap (803) is threadedly connected to the outer surface of the threaded sleeve (802).

5. The dual filter shut-off valve according to claim 4, characterized in that: The pore (801) is located on the outside of the docking block (71) and is used to collect filtered impurities.

6. The dual filter shut-off valve according to claim 1, characterized in that: The inner wall of the liquid outlet chamber (7) is fixedly installed with a second filter plate (9), which is used to filter the liquid filtered by the first filter plate (5) again.

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