Throttling stop valve

Abstract

The throttling stop valve comprises a throttling valve body and valve ports formed in the two ends of the throttling valve body respectively, sealing assemblies are arranged at the valve ports and comprise first barrels, second barrels and sealing rubber rings, the first barrels are fixed to the upper portions of the valve ports, and two sets of rotating rods are rotationally arranged in the first barrels; the second barrel is fixed below the valve port, two winders are rotationally arranged in the second barrel, each winder comprises a winding rod and a rotating disc fixed to the end of the winding rod, the rotating discs are located on the outer side of the second barrel, force application handles are fixed to the surfaces of the rotating discs, protruding blocks are fixed to the peripheries of the rotating discs, bolts are inserted into the protruding blocks, and a plurality of positioning holes are evenly formed in the end of the second barrel. The multiple sets of positioning holes are annularly distributed and used in cooperation with bolts, and two sets of penetrating openings are symmetrically formed in the first barrel body and the second barrel body. According to the sealing assembly designed by the utility model, tightness adjustment can be carried out according to actual conditions, and when the sealing ring is loosened after being used for a long time, further sealing and stabilizing treatment can be carried out in a screwing manner.

Description

Technical Field

[0001] The utility model relates to the technical field of throttling stop valves, in particular to a throttling stop valve. Background Art

[0002] The throttling stop valve is a commonly used valve used to control the flow and pressure of fluid media. It is usually composed of a valve body, a valve disc (valve flap) and a valve stem. The main feature of the throttling stop valve is that the contact area between the valve disc (valve flap) and the valve seat is large. The distance between the valve disc and the valve seat is changed by rotating the valve stem to control the flow of the medium. When the gap between the valve disc and the valve seat becomes smaller, the passage of the fluid through the valve is restricted, thereby achieving the effect of throttling. Compared with other types of valves, the throttling stop valve has better control accuracy and flow adjustment range in flow regulation. In order to ensure the stability of the connection between the end of the throttling stop valve and the pipeline, a flange connection is usually used.

[0003] However, the existing throttle stop valve has the following problems during long-term use: the throttle stop valve uses a flange to connect the pipeline, which has good sealing performance. However, during long-term use, the pressure inside the valve body and the performance of the flange's own sealing rubber ring decrease, and there may be leakage at the connection between the throttle stop valve and the pipeline end. There is a lack of ways to optimize this problem, and the main method is replacement, which is cumbersome. Therefore, it is necessary to design a corresponding technical solution to solve the existing technical problems. Utility Model Content

[0004] The utility model aims to provide a throttling stop valve, which solves the technical problem that although the connection method of the throttling stop valve using a flange and a pipeline has good sealing performance, the pressure inside the valve body and the performance of the flange's own sealing rubber ring decrease during long-term use, and there may be leakage at the connection between the throttling stop valve and the end of the pipeline. There is a lack of methods to optimize this problem, and the main method used is replacement, which is cumbersome to operate.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a throttling stop valve, comprising a throttling valve body and valve ports respectively arranged at both ends of the throttling valve body, the valve ports are equipped with sealing components, the sealing components include a cylinder body 1, a cylinder body 2 and a sealing rubber ring, the cylinder body 1 is fixed above the valve port and has two groups of rotating rods rotatably arranged inside, the cylinder body 2 is fixed below the valve port and has two groups of reels rotatably arranged inside, the reel includes a reeling rod and a rotating disk fixed to the end of the reeling rod, the rotating disk is located outside the cylinder body 2 A force handle is fixed on the surface and a convex block is fixed on the periphery, a pin is inserted on the convex block, a plurality of groups of positioning holes are evenly opened on the end of the cylinder body 2, the plurality of groups of positioning holes are distributed in a ring shape and are used in conjunction with the pin, two groups of through openings are symmetrically opened on the cylinder body 1 and the cylinder body 2, the sealing rubber ring is divided into two parts and are respectively a rubber strip 1 and a rubber strip 2, both ends of the rubber strip 1 pass through the through openings and are respectively connected to the rotating rod and the winding rod on the same side, and both ends of the rubber strip 2 also pass through the through openings and are respectively connected to the rotating rod and the winding rod on the same side.

[0006] As a preferred embodiment of the utility model, triangular sealing convex blocks are provided at the bottom of the cylinder body 1 and the upper end of the cylinder body 2, and the triangular sealing convex blocks are located in the gap between the rubber strip 1 and the rubber strip 2.

[0007] As a preferred embodiment of the present invention, the triangular sealing protrusion is in a triangular prism structure and fits in the gap between the first rubber strip and the second rubber strip, and the triangular sealing protrusion is made of rubber material.

[0008] As a preferred embodiment of the utility model, the inner side of the rubber strip 1 is processed into two groups of sealing strips, and a water stop strip is arranged between the two groups of sealing strips. The rubber strip 1, the sealing strip and the water stop strip are all made of rubber material, and the structure of the rubber strip 2 is the same as that of the rubber strip 1.

[0009] As a preferred embodiment of the utility model, the surfaces of the rubber strip, the sealing strip and the water stop strip are processed and formed into a laminated structure, wherein the water stop strip is located at the connecting gap between the valve port and the pipeline.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. This scheme optimizes the structure of the throttling stop valve. The inlet and outlet ports of the throttling stop valve are equipped with sealing components. When the throttling stop valve needs to be docked and installed with the pipeline, the staff can connect the throttling stop valve and the pipeline through the flange in a conventional manner. After the connection is completed, the sealing component is unfolded and a circle of sealing rubber rings are distributed in a ring shape on the outside of the connection between the throttling stop valve and the pipeline. The purpose of secondary sealing of the connection can be achieved, which can effectively solve the problem of leakage at the connection.

[0012] 2. The sealing assembly designed in this solution can be adjusted in tightness according to actual conditions. When the sealing ring becomes loose after long-term use, it can be further sealed and stabilized by twisting it. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structure diagram of the utility model;

[0014] Figure 2 This is a structural diagram of the sealing assembly described in the utility model;

[0015] Figure 3 This is a second structural diagram of the cylinder body described in the utility model;

[0016] Figure 4 This is a structural diagram of the sealing rubber ring described in the utility model.

[0017] In the figure: 1. throttle valve body; 2. valve port; 3. cylinder body 1; 4. cylinder body 2; 5. sealing rubber ring; 6. rotating rod; 7. winder; 8. wind-up rod; 9. rotating disk; 10. force handle; 11. convex block; 12. latch; 13. positioning hole; 14. through-hole; 15. rubber strip 1; 16. rubber strip 2; 17. triangular sealing convex block; 18. sealing strip; 19. water stop strip. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4The utility model provides a technical solution: a throttling stop valve, comprising a throttling valve body 1 and valve ports 2 respectively arranged at both ends of the throttling valve body 1, the valve port 2 is equipped with a sealing assembly, the sealing assembly comprises a cylinder 1 3, a cylinder 2 4 and a sealing rubber ring 5, the cylinder 1 3 is fixed above the valve port 2 and two groups of rotating rods 6 are arranged inside for rotation, the cylinder 2 4 is fixed below the valve port 2 and two groups of reelers 7 are arranged inside for rotation, the reeler 7 comprises a reeling rod 8 and a rotating disk 9 fixed to the end of the reeling rod 8, the rotating disk 9 is located outside the cylinder 2 4 and a force applying handle 10 is fixed on the surface and the outer periphery is fixed A convex block 11 is fixed, and a latch 12 is inserted into the convex block 11. A plurality of groups of positioning holes 13 are evenly opened at the end of the cylinder 4. The plurality of groups of positioning holes 13 are annularly distributed and used in conjunction with the latch 12. Two groups of through-holes 14 are symmetrically opened on the cylinder 1 3 and the cylinder 2 4. The sealing rubber ring 5 is divided into two parts, namely, a rubber strip 1 15 and a rubber strip 2 16. Both ends of the rubber strip 1 15 pass through the through-hole 14 and are respectively connected to the rotating rod 6 and the winding rod 8 on the same side. The winding rod 8 is a rod-shaped structure. Both ends of the rubber strip 2 16 also pass through the through-hole 14 and are respectively connected to the rotating rod 6 and the winding rod 8 on the same side.

[0020] Further improvement, such as Figure 2 As shown, a triangular sealing protrusion 17 is provided at the bottom of the cylinder 1 3 and the upper end of the cylinder 2 4 , and the triangular sealing protrusion 17 is located in the gap between the rubber strip 1 15 and the rubber strip 2 16 .

[0021] Further improvement, such as Figure 2 As shown: the triangular sealing protrusion 17 is in a triangular prism structure and fits with the gap between the first rubber strip 15 and the second rubber strip 16. The triangular sealing protrusion 17 is made of rubber material, which can seal the gap between the ends of the first rubber strip 15 and the second rubber strip 16.

[0022] Further improvement, such as Figure 4 As shown: the inner side of the rubber strip 15 is processed into two groups of sealing strips 18, and a water stop strip 19 is arranged between the two groups of sealing strips 18. The rubber strip 15, the sealing strip 18 and the water stop strip 19 are all made of rubber material. The structure of the rubber strip 2 16 is the same as that of the rubber strip 1. The two groups of sealing strips 18 are contact-sealed with the valve port 2 and the pipeline respectively, and the connection is sealed by the water stop strip 19.

[0023] Specifically, the surfaces of the rubber strip 15, the sealing strip 18 and the water stop strip 19 are processed and formed into a stacked structure, wherein the water stop strip 19 is located at the connecting gap between the valve port 2 and the pipeline, and is used to perform a plugging and sealing treatment on the gap.

[0024] During use: After the valve ports 2 at both ends of the throttle valve body 1 are connected to the pipeline through flanges, the staff can twist the force handle 10 to drive the rotating disk 9 and the winding rod 8 to rotate. During the rotation of the winding rod 8, the rubber strip 15 and the rubber strip 2 16 are tightened and the two sets of sealing strips 18 are contact-sealed with the valve port 2 and the pipeline respectively, and the connection is sealed through the water stop strip 19. The flange is wrapped with the sealing rubber ring 5 to further improve the sealing of the connection. Finally, the pin 12 is inserted into the corresponding positioning hole 13 to complete the limiting. During long-term use, when the sealing performance of the sealing rubber ring 5 decreases and becomes loose, the sealing rubber ring 5 can be tightened for a second time. The operation is simple and easy to use.

[0025] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0027] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A throttle stop valve, comprising a throttle valve body (1) and valve ports (2) arranged at two ends of the throttle valve body (1), wherein the valve ports (2) are provided with sealing components, characterized in that: The sealing assembly comprises a cylinder body (3), a cylinder body (4) and a sealing rubber ring (5); the cylinder body (3) is fixed above the valve port (2) and has two groups of rotating rods (6) rotatably arranged inside; the cylinder body (4) is fixed below the valve port (2) and has two groups of reels (7) rotatably arranged inside; the reel (7) comprises a reeling rod (8) and a rotating disk (9) fixed to the end of the reeling rod (8); the rotating disk (9) is located outside the cylinder body (4) and has a force application handle (10) fixed on its surface and a convex block (11) fixed on its periphery; a latch pin (12) is inserted into the convex block (11); the cylinder body (4) is fixed above the valve port (2) and has two groups of rotating rods (6) rotatably arranged inside; the reel (7) comprises a reeling rod (8) and a rotating disk (9) fixed to the end of the reeling rod (8); the rotating disk (9) is located outside the cylinder body (4) and has a force application handle (10) fixed on its surface and a convex block (11) fixed on its periphery; the convex block (11) is inserted with a latch pin (12); The end of the second (4) is evenly provided with a plurality of groups of positioning holes (13), the plurality of groups of positioning holes (13) are distributed in a ring shape and are used in conjunction with the latch (12), the cylinder body one (3) and the cylinder body two (4) are symmetrically provided with two groups of through openings (14), the sealing rubber ring (5) is divided into two parts and are respectively a rubber strip one (15) and a rubber strip two (16), the two ends of the rubber strip one (15) pass through the through openings (14) and are respectively connected to the rotating rod (6) and the winding rod (8) on the same side, and the two ends of the rubber strip two (16) also pass through the through openings (14) and are respectively connected to the rotating rod (6) and the winding rod (8) on the same side.

2. A throttling stop valve according to claim 1, characterized in that: A triangular sealing convex block (17) is provided at the bottom of the cylinder body 1 (3) and the top of the cylinder body 2 (4), and the triangular sealing convex block (17) is located in the gap between the rubber strip 1 (15) and the rubber strip 2 (16).

3. A throttling stop valve according to claim 2, characterized in that: The triangular sealing protrusion (17) is in the form of a triangular prism and fits in the gap between the first rubber strip (15) and the second rubber strip (16). The triangular sealing protrusion (17) is made of rubber material.

4. A throttling stop valve according to claim 3, characterized in that: The inner side of the rubber strip one (15) is processed into two groups of sealing strips (18), and a water stop strip (19) is arranged between the two groups of sealing strips (18). The rubber strip one (15), the sealing strip (18) and the water stop strip (19) are all made of rubber material, and the rubber strip two (16) has the same structure as the rubber strip one.

5. A throttling stop valve according to claim 4, characterized in that: The surfaces of the rubber strip (15), the sealing strip (18) and the water stop strip (19) are processed and formed into a laminated structure, wherein the water stop strip (19) is located at the connection gap between the valve port (2) and the pipeline.

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