A stop valve

Abstract

The utility model relates to a valve door technical field, a stop valve, including the valve body, the valve body inside the valve clack of setting, the valve clack upper side's valve clack cover, install on the valve seat for the valve rod of rotating control valve clack and valve clack cover lift, through being provided with vertical valve port in the valve body inside, this vertical valve port below installs filter assembly, make valve body can be multistage filtration and collect impurity when using, and the filter assembly can be directly disassembled by the valve body, to facilitate direct later replacement cleaning, installation and facilitate to the discharge of the impurity sewage in the valve body inside, do not need to disassemble the whole valve body, and the filter assembly not only has horizontal filter plate dismounting on the valve rod top and filters, still sets up a plurality of detachable filter screen boxes on the valve rod, utilizes a plurality of filter screen boxes to filter and collect liquid impurity particle further, very convenient to dismount and clean later, also can be repeatedly used to reduce the cost input.

Description

Technical Field

[0001] This utility model relates to a gate valve and is part of the field of valve technology. Background Technology

[0002] In fluid control systems, gate valves, as critical opening and closing components, directly impact pipeline safety and media purity. Traditional gate valves have long suffered from technical bottlenecks in their design, severely restricting their application in precision conditions. Firstly, the lack of filtration functionality in gate valves leads to sealing failure and system contamination. Because existing gate valves generally lack integrated filtration structures, when the liquid contains solid particles, fibers, or crystals, these impurities directly impact the valve core and seat sealing surfaces. Over long-term operation, this results in scratches / indentations on the sealing surface, increasing internal leakage. Furthermore, impurities embed in soft sealing materials (such as PTFE), causing permanent deformation. Secondly, the cleaning process for gate valves is complex. Current standard gate valves retain some impurities during use, requiring complete disassembly of the valve body for cleaning. This not only affects operational efficiency but also makes installation and use cumbersome. Therefore, our company proposes an improved gate valve. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a shut-off valve to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a stop valve, including a valve body, a valve disc disposed on the inside of the valve body, a valve disc cover on the upper side of the valve disc, and a valve stem mounted on a valve seat for rotating and controlling the raising and lowering of the valve disc and the valve disc cover. The valve body has a vertical valve port in the middle, and the valve disc is closely attached to the upper side of the vertical valve port.

[0005] The bottom of the valve body is provided with an installation port that communicates with the bottom of the vertical valve port, and a filter assembly is installed and removed in the installation port. The filter assembly is located on the lower side of the vertical valve port.

[0006] The filter assembly includes a base plate locked to the bottom of the valve body and a connecting rod fixed to the upper middle part of the base plate. A horizontal filter plate is installed horizontally at the top of the connecting rod and is pressed against the lower section of the vertical valve port. The horizontal filter plate is located below the valve disc.

[0007] A further improvement is that the middle part of the horizontal filter plate is detachably connected to the top of the connecting rod by screws.

[0008] A further improvement is that multiple filter boxes are sleeved in the middle of the connecting rod, and each filter box is stacked on the lower side of the horizontal filter plate, with multiple openings on the outer periphery of the top of the filter box.

[0009] A further improvement is that an inner retaining ring is installed on the inner side wall of the top of the filter box, and the inner retaining ring is located on the inner edge of the opening.

[0010] A further improvement is that the upper side of the inner retaining ring is set as an inclined surface that slopes downward toward the center.

[0011] A further improvement is that a sleeve is fixedly provided at the center of the bottom of the filter box. This sleeve is adapted to be installed on the connecting rod and is locked in place by screws.

[0012] A further improvement is that the base plate is bolted to the bottom of the valve body, and a sealing gasket is provided on one side between them.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The present invention provides a vertical valve port on the inside of the valve body, and a filter assembly is installed below the vertical valve port. This allows the valve body to be filtered and collected in multiple stages during use. Furthermore, the filter assembly can be directly disassembled from the valve body to facilitate subsequent replacement, cleaning, installation, and discharge of impurities and wastewater from the inside of the valve body without disassembling the entire valve body.

[0015] Furthermore, the filter assembly not only has a horizontal filter plate that can be detached and installed at the top of the valve stem for filtration, but also has multiple detachable filter screen boxes fitted on the valve stem. These multiple filter screen boxes are used to further filter and collect liquid impurities and particles. They are very convenient to disassemble and clean later, and can also be reused to reduce costs. At the same time, an inner retaining ring is set on the inner side of the top of the filter screen box to effectively prevent impurities and particles from overflowing after the valve is closed. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the filter assembly.

[0019] In the diagram: 1. Valve body; 2. Vertical valve port; 3. Valve disc; 4. Valve disc cover; 5. Valve stem; 6. Valve seat; 7. Mounting port; 8. Filter assembly; 81. Base plate; 82. Connecting rod; 83. Horizontal filter plate; 84. Filter screen box; 85. Sleeve; 86. Opening; 87. Inner retaining ring; 87. Inclined surface; 871. Sealing gasket; 88. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1-2 This utility model provides a technical solution for a stop valve: it includes a stop valve comprising a valve body 1, a valve disc 3 located inside the valve body 1, a valve disc cover 4 on the upper side of the valve disc 3, and a valve stem 5 mounted on a valve seat 6 for rotating and controlling the raising and lowering of the valve disc 3 and the valve disc cover 4. A vertical valve port 2 is provided in the middle of the valve body 1, and the valve disc 3 is closely attached to the upper side of the vertical valve port 2 for opening and closing the vertical valve port 2. An installation port 7 communicating with the bottom of the vertical valve port 2 is provided at the bottom of the valve body 1, and a filter assembly 8 is disassembled and installed in the installation port 7. The filter assembly 8 is located below the vertical valve port 2. The filter assembly 8 includes a base plate 81 locked to the bottom of the valve body 1 and a connecting rod 82 fixed to the middle of the upper side of the base plate 81. The base plate 81 is locked to the bottom of the valve body 1 by bolts, which allows for quick disassembly and assembly of the base plate 81, and a sealing gasket 88 is provided between them to improve the sealing performance.

[0022] A horizontal filter plate 83 is installed horizontally at the top of the connecting rod 82 and is pressed against the lower section of the vertical valve port 2. The horizontal filter plate 83 is located below the valve disc 3. Therefore, when the valve disc 3 moves away from the vertical valve port 2 and the vertical valve port 2 is opened, the flowing liquid can be filtered by the horizontal filter plate 83, thereby improving the purity of the liquid. The middle part of the horizontal filter plate 83 is locked and disassembled to the top of the connecting rod 82 by screws. Therefore, the horizontal filter plate 83 can be disassembled and replaced separately in the future. After the horizontal filter plate 83 is disassembled and installed, it is also convenient to slide and disassemble the filter screen box 84 for replacement. The overall usage is very flexible.

[0023] The filter box 84 is provided in three parts and is sleeved in the middle of the connecting rod 82. The three filter boxes 84 are stacked on the lower side of the horizontal filter plate 83. Multiple openings 86 are opened on the outer periphery of the top of the filter box 84. In this way, the liquid can be filtered through the openings 86 and each filter box 84 for multi-stage filtration. The filtered impurities can be collected in layers in the filter box 84. In this way, after the filter assembly 8 is disassembled, the impurity particles inside the valve body 1 can be quickly removed.

[0024] Furthermore, an inner retaining ring 87 is annularly installed on the inner side wall of the top of the filter box 84, and the inner retaining ring 87 is located on the inner edge of the opening 86. This inner retaining ring 87 can effectively prevent impurities from overflowing from the filter box 84. At the same time, the upper side of the inner retaining ring 87 is set as an inclined surface 871 that slopes downward towards the center, so that impurities filtered by the flowing liquid are more easily guided and collected in the filter box 84. In order to facilitate the installation and removal of the filter box 84, a sleeve 85 is fixed at the center of the bottom of the filter box 84. The sleeve 85 is adapted to be fitted on the connecting rod 82 and locked with screws. Therefore, when installing the filter box 84, the horizontal filter plate 83 is removed first, allowing the sleeve 85 to be fitted onto the connecting rod 82, and then the layers are stacked and locked onto the connecting rod 82.

[0025] More specific operating principles:

[0026] When cleaning valve body 1 is required, simply rotate valve stem 5 to move valve disc 3 downwards and close vertical valve port 2. Then, remove bottom plate 81 from the bottom of valve body 1, along with connecting rod 82, horizontal filter plate 83, and filter screen box 84. This allows the impurities and particles filtered by horizontal filter plate 83 and filter screen box 84 to be removed and cleaned. A new filter assembly 8 can then be installed. After the filter assembly 8 is removed, liquid can continue to be discharged from the left inlet end of valve body 1, thereby expelling the remaining liquid inside valve body 1 under water pressure. When installing the new filter assembly 8... First, the valve disc 3 can be opened, so that water can flow out from the right end of the valve body 1 along the vertical valve port 2, which can reduce the resistance when installing the base plate 81. After installation, the liquid can be filtered through multiple layers of filter screen boxes 84, and some of the impurities after filtration can be flushed into the filter screen box 84 from the opening 86 and the inclined surface 871 on the upper side of the inner baffle ring 87 for collection. Then, it can be filtered by the horizontal filter plate 83, which can greatly improve the filtration effect of the liquid. The inner baffle ring 87 is conducive to the overflow of impurity particles, especially when the valve is closed, it is not easy for them to overflow from the opening 86.

[0027] It should be noted that the present invention provides a shut-off valve, which mainly improves the above-mentioned structure. The functions, components and structures not mentioned can be implemented by using existing components and structures that can achieve the corresponding functions.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stop valve, comprising a valve body (1), a valve disc (3) arranged inside the valve body (1), a valve disc cover (4) arranged on the upper side of the valve disc (3), and a valve rod (5) arranged on a valve seat (6) for rotating control of the valve disc (3) and the valve disc cover (4) lifting and lowering, characterized in that: a vertical valve port (2) is arranged in the middle of the valve body (1), and the valve disc (3) is arranged on the upper side of the vertical valve port (2); an installation port (7) is arranged on the bottom of the valve body (1) and communicates with the bottom of the vertical valve port (2), and a filter assembly (8) is detachably arranged in the installation port (7), and the filter assembly (8) is arranged on the lower side of the vertical valve port (2); the filter assembly (8) comprises a bottom plate (81) locked on the bottom of the valve body (1) and a connecting rod (82) fixed on the upper side of the middle of the bottom plate (81), a horizontal filter plate (83) is transversely arranged on the top end of the connecting rod (82) and abuts against the lower side cross section of the vertical valve port (2) through the horizontal filter plate (83), and the horizontal filter plate (83) is located below the valve disc (3).

2. A globe valve according to claim 1, wherein: The middle part of the horizontal filter plate (83) is detachably connected with the top part of the connecting rod (82) through screws.

3. A globe valve according to claim 2, wherein: A plurality of filter screen boxes (84) are sleeved on the middle part of the connecting rod (82), and each filter screen box (84) is arranged on the lower side of the horizontal filter plate (83) in a stacked manner, and a plurality of openings (86) are arranged on the top outer periphery of the filter screen box (84).

4. A stop valve according to claim 3, characterised in that: An inner retaining ring (87) is annularly arranged on the inner side wall of the top of the filter screen box (84), and the inner retaining ring (87) is located on the inner side edge of the opening (86).

5. A stop valve according to claim 4, characterised in that: The upper side of the inner retaining ring (87) is provided with an inclined surface (871) inclined downward to the middle part.

6. A globe valve according to claim 5, wherein: A sleeve (85) is fixedly arranged on the bottom center of the filter screen box (84), the sleeve (85) is sleeved on the connecting rod (82) and locked through screws.

7. A globe valve according to claim 1, wherein: The bottom plate (81) and the bottom of the valve body (1) are locked through bolts, and a one-side sealing gasket (88) is arranged therebetween.

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