A stop valve for a valve faucet having high sealing strength

Abstract

The utility model discloses a high -strength sealing property stop valve for valve tap, including valve body, the inside of valve body is provided with valve seat, the upper end of valve body is provided with the installation flange, the surface of installation flange is installed with the apron, the inside of apron is installed with the threaded rod, the lower extreme of threaded rod is provided with the positioning installation mechanism, the lower extreme of threaded rod is installed with the valve block through positioning installation mechanism, the lower extreme of valve block inserts the inside plugging of valve seat, the inside fixed with the convex ring shape sealing ring of installation flange lower extreme, the utility model discloses a valve block through positioning installation mechanism installs in threaded rod bottom, and valve block and threaded rod assembly are convenient, and convenient replacement, through the setting of valve block bottom reducing boss, can be clamped into the valve hole of valve seat surface tight sealing, and the inside of installation flange sets up convex ring shape sealing ring structure, can be attached valve block surface seal, can make valve block close and open time improve the sealing property.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a gate valve for valve faucets with high sealing performance. Background Technology

[0002] A gate valve controls the flow of media by moving the valve disc through the raising and lowering of the valve stem, causing the valve disc sealing surface to tightly fit or separate from the valve seat sealing surface. When closed, the valve stem applies pressure to force a seal; when open, the valve disc travels typically 25% to 30% of its nominal diameter to reach the fully open state. Its flow direction is directional; domestic standards stipulate that the media generally flows from top to bottom, but a counter-current design can enhance sealing performance under high pressure. According to existing technology, such as the invention disclosed in patent announcement number CN113324060A, this invention relates to the field of valves, more specifically to a gate valve. A gate valve includes a gate pipe, a boss, a meshing pipe, a limiting rod, a middle plate, and a pad. A boss is provided on both the front and rear sides of the middle section of the gate pipe. The meshing pipe connects to the top of the gate pipe. A limiting rod is fixed to each boss. A pad is provided on the upper right side and the lower left side of the middle plate. The pad on the upper right side is fixed to the upper inner side of the gate pipe, and the pad on the lower left side is fixed to the lower inner side of the gate pipe. A circular hole is provided in the middle of the middle plate. This invention facilitates timely cleaning of the inside of the gate valve pipeline and the switching between the gate valve and butterfly valve functions, thereby improving the utilization rate and wide applicability of the device. It allows for timely replacement within the factory. In the existing technology, the valve stem uses direct upper and lower thread rotation to control the valve plate to close and seal. However, the sealing performance is not good when the valve block is in use, and the installation of the valve block and valve stem is complicated. It is not convenient to assemble the whole valve and replace the valve block. Therefore, we need to propose a gate valve for valve faucets with high sealing performance. Utility Model Content

[0003] The purpose of this utility model is to provide a gate valve for valve faucets with high sealing performance to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-strength sealing valve for valve faucets, comprising a valve body, a valve seat provided on the inner side of the valve body, an installation protrusion provided at the upper end of the valve body, a cover plate installed on the surface of the installation protrusion, a threaded rod installed on the inner side of the cover plate, a positioning and installation mechanism provided at the lower end of the threaded rod, a valve block installed at the lower end of the threaded rod through the positioning and installation mechanism, the lower end of the valve block being inserted into the inner side of the valve seat for sealing, a convex annular sealing ring fixed on the inner side of the lower end of the installation protrusion, the inner side of the convex annular sealing ring being tightly attached to the surface of the valve block, and a handle installed at the upper end of the threaded rod.

[0005] Preferably, the inner side of the convex annular sealing ring is provided with annular protrusions, which are evenly distributed from top to bottom on the inner side of the convex annular sealing ring.

[0006] Preferably, the positioning and installation mechanism includes a first semicircular clamping block and a second semicircular clamping block. The upper ends of the first and second semicircular clamping blocks are each provided with a first convex clamping groove, and the lower ends of the first and second semicircular clamping blocks are each provided with a second convex clamping groove. The lower end of the threaded rod is provided with a first protrusion. The surface of the first protrusion is engaged with the inner side of the first convex clamping groove. The surface of the valve block is provided with a second protrusion. The surface of the second protrusion is engaged with the inner side of the second convex clamping groove.

[0007] Preferably, the surfaces of the first and second semicircular clamps are tightly fitted to the inner side of the mounting protrusion, and the surfaces of the first and second semicircular clamps are covered with a sealing layer.

[0008] Preferably, the lower end of the valve block is provided with a variable diameter protrusion, and the surface of the valve seat is provided with a valve hole that mates with the variable diameter protrusion, with the variable diameter protrusion closely attached to the inner side of the valve hole.

[0009] Preferably, the upper end of the threaded rod is provided with an insertion hole, the handle is inserted into the inner side of the insertion hole, and both ends of the handle are equipped with handle end caps. The surface of the handle end cap is provided with threaded holes, and both ends of the handle are screwed into the threaded holes of the handle end caps.

[0010] Preferably, the cover plate is fixed to the surface of the mounting protrusion by bolts, and the lower end of the cover plate is provided with a protrusion, which is tightly engaged with the inner side of the mounting protrusion.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a valve block mounted on the bottom of a threaded rod via a positioning and mounting mechanism, facilitating easy assembly and replacement of the valve block and threaded rod. The valve block features a variable-diameter protrusion at its bottom, which can be inserted into the valve hole on the valve seat surface for a tight seal. Furthermore, a convex annular sealing ring structure is provided on the inner side of the mounting protrusion, ensuring a close fit and seal against the valve block surface, thus improving sealing performance when the valve block is closed and opened. Attached Figure Description Figure 1 This is a first schematic diagram of the overall structure of this utility model; Figure 2 This is a second schematic diagram of the overall structure of this utility model; Figure 3 This is an enlarged schematic diagram of point A in this utility model; Figure 4 This is a partial structural diagram of the first and second semicircular clamping blocks after they are combined. Figure 5 This is a partial cross-sectional view of the structure of the first and second semicircular clamping blocks after they are combined.

[0012] In the diagram: 1. Valve body; 100. Valve seat; 2. Mounting protrusion; 3. Cover plate; 4. Threaded rod; 5. First semi-circular clamping block; 6. Second semi-circular clamping block; 7. Valve block; 8. Convex annular sealing ring; 9. Handle; 10. Handle end cap; 80. Annular protrusion; 560. First convex clamping groove; 561. Second convex clamping groove; 60. First protrusion; 70. Second protrusion. Detailed Implementation

[0013] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-5 This utility model provides a technical solution: a high-strength sealing valve for valve faucets, including a valve body 1, a valve seat 100 provided on the inner side of the valve body 1, an installation protrusion 2 provided on the upper end of the valve body 1, a cover plate 3 installed on the surface of the installation protrusion 2, a threaded rod 4 installed on the inner side of the cover plate 3, a positioning installation mechanism provided on the lower end of the threaded rod 4, a valve block 7 installed on the lower end of the threaded rod 4 through the positioning installation mechanism, the lower end of the valve block 7 is inserted into the inner side of the valve seat 100 for sealing, a convex annular sealing ring 8 is fixed on the inner side of the lower end of the installation protrusion 2, the inner side of the convex annular sealing ring 8 is tightly attached to the surface of the valve block 7, and a handle 9 is installed on the upper end of the threaded rod 4; The inner side of the convex annular sealing ring 8 is provided with annular protrusions 80, which are evenly distributed from top to bottom on the inner side of the convex annular sealing ring 8. The convex annular sealing ring 8 can be made of rubber material. The annular protrusions 80 can fit against the surface of the valve block 7. When the valve block 7 rises or falls, the annular protrusions 80 can fit tightly against the surface of the valve block 7. When the valve block 7 slides, it can fit and seal, preventing water from flowing into the installation protrusion 2 and improving the sealing performance. Furthermore, a variable diameter protrusion is provided at the lower end of the valve block 7, and a valve hole that mates with the variable diameter protrusion is opened on the surface of the valve seat 100. The variable diameter protrusion is tightly attached to the inner side of the valve hole. The valve block 7 with the variable diameter protrusion structure and the valve hole structure with the variable diameter hole structure on the surface of the valve seat 100, when the lower end of the valve block 7 is inserted into the valve hole to close, because the valve hole adopts the variable diameter hole structure, the bottom opening of the valve hole is smaller than the top opening, and the water flow is guided from bottom to top. After sealing, leakage is avoided, which can improve the sealing performance. In addition, the valve hole with the variable diameter hole structure allows the water to flow out from bottom to top when the water is opened. It can reduce the pressure of high pressure water flow. After sealing, the sealing strength is high. Furthermore, the surface of the valve block 7 can be covered with a rubber layer, which increases the sealing performance after connecting with the valve hole. The positioning and installation mechanism includes a first semicircular clamping block 5 and a second semicircular clamping block 6. The upper ends of the first semicircular clamping block 5 and the second semicircular clamping block 6 are provided with a first convex clamping groove 560, and the lower ends of the first semicircular clamping block 5 and the second semicircular clamping block 6 are provided with a second convex clamping groove 561. The lower end of the threaded rod 4 is provided with a first protrusion 60, and the surface of the first protrusion 60 is engaged with the inner side of the first convex clamping groove 560. The surface of the valve block 7 is provided with a second protrusion 70, and the surface of the second protrusion 70 is engaged with the inner side of the second convex clamping groove 561. Furthermore, when installing the threaded rod 4 and the valve block 7, the first semicircular clamping block 5 and the second semicircular clamping block 6 can be combined. At this time, the first convex clamping groove 560 is combined and clamped on the surface of the first protrusion 60, and the second convex clamping groove 561 is combined and clamped on the surface of the second protrusion 70. Then, the valve block 7, the first semicircular clamping block 5, the second semicircular clamping block 6, and the threaded rod 4 are inserted into the installation protrusion 2. The first semicircular clamping block 5 and the second semicircular clamping block 6 are positioned by the installation protrusion 2 and will not separate to the left or right. In use, rotating the threaded rod 4 to descend can drive the first protrusion 60 to rotate in the first convex clamping groove 560, which can squeeze the positioning installation mechanism downward and drive the valve block 7 to descend. The valve hole on the surface of the valve seat 100 can be blocked by the valve block 7. When rotating the threaded rod 4 to rise, it can drive the first protrusion 60 to rotate in the first convex clamping groove 560, which can lift the positioning installation mechanism, drive the valve block 7 to rise and disengage from the valve hole, open the valve hole, and guide the water. The surfaces of the first semicircular clamp 5 and the second semicircular clamp 6 are tightly fitted to the inner side of the mounting protrusion 2, and the surfaces of the first semicircular clamp 5 and the second semicircular clamp 6 are covered with a sealing layer; the surfaces of the first semicircular clamp 5 and the second semicircular clamp 6 may be covered with a rubber layer, which can increase the sealing performance when the first semicircular clamp 5 and the second semicircular clamp 6 are fitted to the inner side of the mounting protrusion 2. The upper end of the threaded rod 4 is provided with an insertion hole, and the handle 9 is inserted into the inner side of the insertion hole. Both ends of the handle 9 are equipped with handle end caps 10. The surface of the handle end caps 10 is provided with threaded holes, and both ends of the handle 9 are screwed into the threaded holes of the handle end caps 10. When in use, the handle 9 can slide inside the threaded rod 4, which makes it easy to rotate the threaded rod 4 by the handle 9. The operation is convenient. The handle end caps 10 on the outside are easy to assemble and will not cause the handle 9 to slip off the threaded rod 4. The installation is convenient and stable, and the use is convenient. The cover plate 3 is fixed to the surface of the mounting protrusion 2 by bolts. The lower end of the cover plate 3 is provided with a protrusion, which is tightly engaged with the inner side of the mounting protrusion 2. The cover plate 3 can adopt a convex round cover structure. The bottom protrusion is engaged with the mounting protrusion 2 for positioning, and the bottom protrusion can fit against the inner side of the mounting protrusion 2 for sealing. After being fixed by bolts, the installation is stable and the sealing performance of the installation site is improved.

[0015] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength sealing valve for faucets, comprising a valve body (1), characterized in that: A valve seat (100) is provided on the inner side of the valve body (1). An installation protrusion (2) is provided on the upper end of the valve body (1). A cover plate (3) is installed on the surface of the installation protrusion (2). A threaded rod (4) is installed on the inner side of the cover plate (3). A positioning installation mechanism is provided on the lower end of the threaded rod (4). A valve block (7) is installed on the lower end of the threaded rod (4) through the positioning installation mechanism. The lower end of the valve block (7) is inserted into the inner side of the valve seat (100) to seal it. A convex annular sealing ring (8) is fixed on the inner side of the lower end of the installation protrusion (2). The inner side of the convex annular sealing ring (8) is tightly attached to the surface of the valve block (7). A handle (9) is installed on the upper end of the threaded rod (4).

2. The high-sealing valve for faucets according to claim 1, characterized in that: The inner side of the convex annular sealing ring (8) is provided with annular protrusions (80), and the annular protrusions (80) are evenly distributed from top to bottom on the inner side of the convex annular sealing ring (8).

3. A high-strength sealing valve for faucets according to claim 1, characterized in that: The positioning and installation mechanism includes a first semicircular clamping block (5) and a second semicircular clamping block (6). The upper ends of the first semicircular clamping block (5) and the second semicircular clamping block (6) are provided with a first convex clamping groove (560). The lower ends of the first semicircular clamping block (5) and the second semicircular clamping block (6) are provided with a second convex clamping groove (561). The lower end of the threaded rod (4) is provided with a first protrusion (60). The surface of the first protrusion (60) is inserted into the inner side of the first convex clamping groove (560). The surface of the valve block (7) is provided with a second protrusion (70). The surface of the second protrusion (70) is inserted into the inner side of the second convex clamping groove (561).

4. A high-strength sealing valve for faucets according to claim 3, characterized in that: The surfaces of the first semicircular clamp (5) and the second semicircular clamp (6) are tightly fitted to the inner side of the mounting protrusion (2), and the surfaces of the first semicircular clamp (5) and the second semicircular clamp (6) are covered with a sealing layer.

5. A high-strength sealing valve for faucets according to claim 1, characterized in that: The lower end of the valve block (7) is provided with a variable diameter protrusion, and the surface of the valve seat (100) is provided with a valve hole that cooperates with the variable diameter protrusion. The variable diameter protrusion is closely attached to the inner side of the valve hole.

6. A high-sealing valve for faucets according to claim 1, characterized in that: The upper end of the threaded rod (4) is provided with an insertion hole, and the handle (9) is inserted into the inner side of the insertion hole. Both ends of the handle (9) are equipped with handle end caps (10). The surface of the handle end caps (10) is provided with threaded holes, and both ends of the handle (9) are screwed into the threaded holes of the handle end caps (10) by threads.

7. A high-strength sealing valve for faucets according to claim 1, characterized in that: The cover plate (3) is fixed to the surface of the mounting protrusion (2) by bolts. The lower end of the cover plate (3) is provided with a protrusion, and the lower end protrusion of the cover plate (3) is tightly engaged with the inner side of the mounting protrusion (2).

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