Zero-leakage anti-scouring stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to a zero-leakage anti-scouring stop valve which comprises a first valve body and a second valve body, a water inlet pipe and a water outlet pipe are fixedly arranged on the first valve body, a water cavity is formed in the first valve body, a partition plate is fixedly connected in the water cavity, a sealing plug is arranged on the partition plate in a sliding mode, and the sealing plug is arranged on the second valve body. A sealing ring is fixedly connected to the second valve body, a round hole used for being connected with the sealing plug is formed in the partition plate, and an annular rubber ring is fixedly connected to the inner wall of the round hole. The second valve body is fixedly connected with two fixing plates, one side of each fixing plate is provided with a limiting plate, the limiting plates are connected with the fixing plates through a plurality of clamping shafts, and a plurality of clamping grooves are formed in the first valve body. According to the stop valve, zero leakage of liquid can be continuously guaranteed, when the liquid leakage phenomenon occurs, the stop valve can be rapidly overhauled and maintained, and use of the stop valve is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a zero-leakage and scour-resistant stop valve. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technology related to stop valves is also constantly improving. Stop valves can be used to prevent the flow of liquid or gas. Closing the stop valve allows the transmission pipe to be maintained and replaced.

[0003] The stop valve currently in use cannot continuously ensure zero leakage of liquid after long-term use. When liquid leakage occurs, the stop valve cannot be quickly inspected and maintained, which is not conducive to the use of the stop valve. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the currently used stop valve cannot continuously ensure zero leakage of liquid after long-term use. When liquid leakage occurs, the stop valve cannot be quickly inspected and maintained, which is not conducive to the use of the stop valve. A zero-leakage and erosion-resistant stop valve is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A zero-leakage and scour-resistant stop valve comprises a first valve body and a second valve body, wherein a water inlet pipe and a water outlet pipe are fixedly arranged on the first valve body, a water cavity is formed in the first valve body, a partition is fixedly connected in the water cavity, a sealing plug is slidably arranged on the partition, a sealing ring is fixedly connected to the second valve body, a circular hole for connecting the sealing plug is formed on the partition, and an annular rubber ring is fixedly connected to the inner wall of the circular hole;

[0007] Two fixed plates are fixedly connected to the second valve body, a limit plate is provided on one side of each of the fixed plates, and the limit plates are connected to the fixed plates through multiple clamping shafts. Multiple clamping grooves are opened on the first valve body, and a slider is slidably connected to the second valve body, each of the limit plates is connected to the slider through a hinged rod, and a rotating component for limiting the movement of the slider is provided on the second valve body.

[0008] Preferably, a first ear plate is fixedly connected to the second valve body, a second ear plate is fixedly connected to the first valve body, a reciprocating screw is rotatably connected to the first ear plate, the slider is threadedly connected to the reciprocating screw, and a fixing rod is fixedly connected to the lower end of the reciprocating screw.

[0009] Preferably, a limiting plate is fixedly connected to the fixing rod, a limiting sleeve is threadedly connected to the fixing rod, and the limiting sleeve and the limiting plate are respectively arranged on the upper and lower sides of the second ear plate.

[0010] Preferably, a threaded rod is threadedly connected to the second valve body, and a moving block having a convex cross-section is rotatably connected to the lower end of the threaded rod, and the moving block is clamped with the sealing plug.

[0011] Preferably, an opening is provided on an inner wall of one side of the water chamber, and one end of the moving block is slidably connected to the opening.

[0012] Preferably, a plurality of positioning rods are fixedly connected to the upper surface of the first valve body, and a plurality of positioning grooves are formed on the second valve body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The sealing plug fits tightly against the inner wall of the circular hole, which can effectively prevent the water discharged into the water cavity from the water inlet pipe from being discharged through the water outlet pipe, thereby achieving zero leakage of the stop valve. When liquid leakage occurs, the sealing plug can be taken out and replaced to continuously ensure zero leakage of the liquid. When liquid leakage occurs, the stop valve can be quickly inspected and maintained, which is beneficial to the use of the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front structural schematic diagram of a zero-leakage and anti-scour stop valve proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the back structure of a zero-leakage and anti-scouring stop valve proposed by the utility model;

[0017] Figure 3 This is a front cross-sectional structural schematic diagram of a zero-leakage and anti-scour stop valve proposed by the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the partial structure of the back side of a zero-leakage and anti-scour stop valve.

[0019] In the figure: 1 first valve body, 2 positioning rod, 3 fixing plate, 4 threaded rod, 5 second valve body, 6 sealing ring, 7 fixing rod, 8 limiting sleeve, 9 limiting sheet, 10 limiting plate, 11 clamping shaft, 12 sliding block, 13 first ear plate, 14 reciprocating screw rod, 15 hinged rod, 16 second ear plate, 17 moving block, 18 water outlet pipe, 19 water inlet pipe, 20 sealing plug, 21 partition. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0022] Reference Figure 1-Figure 4 A zero-leakage and scour-resistant stop valve comprises a first valve body 1 and a second valve body 5. A water inlet pipe 19 and a water outlet pipe 18 are fixedly arranged on the first valve body 1. The water inlet pipe 19 and the water outlet pipe 18 are arranged obliquely to reduce the scour of the water flow on the equipment. A water cavity is provided in the first valve body 1. A partition 21 is fixedly connected in the water cavity. A sealing plug 20 is slidably arranged on the partition 21. The sealing plug 20 comprises a cylindrical part and a conical part. A sealing ring 6 is fixedly connected to the second valve body 5. The sealing ring 6 made of rubber can improve the sealing performance when the first valve body 1 and the second valve body 5 are connected to prevent liquid from seeping out from the gap. The partition 21 is provided with a sealing ring for connecting the sealing ring. The circular hole of the plug 20 has an annular rubber ring fixedly connected to the inner wall of the circular hole. Two fixed plates 3 are fixedly connected to the second valve body 5. A limit plate 10 is provided on one side of each fixed plate 3. The limit plate 10 is connected to the fixed plate 3 through a plurality of clamping shafts 11. The plurality of clamping shafts 11 are slidably connected to the corresponding fixed plates 3. One end of the clamping shaft 11 is fixedly connected to the corresponding limit plate 10. A plurality of clamping grooves are provided on the first valve body 1. The other end of the clamping shaft 11 is clamped in the clamping groove. A slider 12 is slidably connected to the second valve body 5. Each limit plate 10 is connected to the slider 12 through a hinged rod 15. A rotating component for limiting the movement of the slider 12 is provided on the second valve body 5.

[0023] The second valve body 5 is fixedly connected to the first ear plate 13, and the second ear plate 16 is fixedly connected to the first valve body 1. The first ear plate 13 is rotatably connected to the reciprocating screw rod 14, and the slider 12 is threadedly connected to the reciprocating screw rod 14. The lower end of the reciprocating screw rod 14 is fixedly connected to the fixing rod 7, and the fixing rod 7 is fixedly connected to the limiting plate 9, and the limiting sleeve 8 is threadedly connected to the fixing rod 7. The limiting sleeve 8 and the limiting plate 9 are respectively arranged on the upper and lower sides of the second ear plate 16, and the second ear plate 16 is provided with a through hole for the lower end of the fixing rod 7 to pass through. The reciprocating screw rod 14 can only rotate relative to the first ear plate 13 and cannot slide in the vertical direction. When the limiting plate 9 and the upper surface of the second ear plate 16 are in close contact, and the upper surface of the limiting sleeve 8 and the lower surface of the second ear plate 16 are in close contact, the friction between the limiting plate 9 and the limiting sleeve 8 and the second ear plate 16 is relatively large, which can effectively prevent the fixing rod 7 from rotating at will.

[0024] A threaded rod 4 is threadedly connected to the second valve body 5, and a moving block 17 with a convex cross-section is rotatably connected at the lower end of the threaded rod 4. The moving block 17 is clamped with a sealing plug 20. An opening is provided on the inner wall of one side of the water chamber, and one end of the moving block 17 is slidably connected to the opening. A mounting groove for clamping the moving block 17 is provided at the upper end of the sealing plug 20. The mounting groove and the moving block 17 have good tightness when connected. When the threaded rod 4 rotates and drives the moving block 17 to move upward, the sealing plug 20 will slide relative to the annular rubber ring. During this process, the moving block 17 will not be separated from the sealing plug 20. After the moving block 17 moves upward, it can be located as a whole on the upper side of the opening.

[0025] A plurality of positioning rods 2 are fixedly connected to the upper surface of the first valve body 1, and a plurality of positioning grooves are provided on the second valve body 5. When the second valve body 5 is connected to the first valve body 1, the upper end of each positioning rod 2 is inserted into the corresponding positioning groove.

[0026] In the utility model, in the initial state, the sealing plug 20 is in close contact with the inner wall of the circular hole, which can effectively prevent the water discharged into the water cavity by the water inlet pipe 19 from being discharged through the water outlet pipe 18, thereby realizing zero leakage of the stop valve. When the threaded rod 4 is rotated and the threaded connection between the threaded rod 4 and the second valve body 5 is threadedly connected, the moving block 17 will be driven to move up in the water cavity, thereby driving the sealing plug 20 to move up together. After the sealing plug 20 moves up to a certain height, there is a large gap between the sealing plug 20 and the annular rubber ring on the inner wall of the circular hole, and the water discharged into the water cavity by the water inlet pipe 19 can be discharged through the water outlet pipe 18. When the stop valve leaks, the limiting sleeve 8 is first rotated to separate it from the fixing rod 7, and then rotated to The reciprocating screw rod 14 and the slider 12 move up along the reciprocating screw rod 14 at the same time. Since one end of each hinged rod 15 is hinged to the slider 12 and the other end is hinged to the corresponding limit plate 10, the angle between the two hinged rods 15 becomes smaller, thereby reducing the distance between the two limit plates 10. After each clamping shaft 11 moves together with the limit plate 10, it will be disengaged from the clamping groove on the first valve body 1, and then the second valve body 5 can be moved upward, the fixing rod 7 and the second ear plate 16 can be disengaged, and the sealing plug 20 can be taken out for replacement to continuously ensure zero leakage of liquid. When liquid leakage occurs, the stop valve can be quickly inspected and maintained, which is beneficial to the use of the stop valve.

[0027] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A zero-leakage and anti-scour stop valve, comprising a first valve body (1) and a second valve body (5), It is characterized in that A water inlet pipe (19) and a water outlet pipe (18) are fixedly arranged on the first valve body (1); a water cavity is provided in the first valve body (1); a partition plate (21) is fixedly connected in the water cavity; a sealing plug (20) is slidably arranged on the partition plate (21); a sealing ring (6) is fixedly connected to the second valve body (5); a circular hole for connecting the sealing plug (20) is provided on the partition plate (21); an annular rubber ring is fixedly connected to the inner wall of the circular hole; Two fixed plates (3) are fixedly connected to the second valve body (5), and a limit plate (10) is provided on one side of each of the fixed plates (3). The limit plate (10) is connected to the fixed plate (3) via a plurality of clamping shafts (11). The first valve body (1) is provided with a plurality of clamping grooves. A slider (12) is slidably connected to the second valve body (5), and each of the limit plates (10) is connected to the slider (12) via a hinge rod (15). The second valve body (5) is provided with a rotating component for limiting the movement of the slider (12).

2. A zero-leakage and anti-scouring stop valve according to claim 1, Features The second valve body (5) is fixedly connected to a first ear plate (13), the first valve body (1) is fixedly connected to a second ear plate (16), the first ear plate (13) is rotatably connected to a reciprocating screw rod (14), the slider (12) and the reciprocating screw rod (14) are threadedly connected, and the lower end of the reciprocating screw rod (14) is fixedly connected to a fixing rod (7).

3. A zero-leakage and anti-scouring stop valve according to claim 2, It is characterized in that A limiting plate (9) is fixedly connected to the fixing rod (7), a limiting sleeve (8) is threadedly connected to the fixing rod (7), and the limiting sleeve (8) and the limiting plate (9) are respectively arranged on the upper and lower sides of the second ear plate (16).

4. A zero-leakage and anti-scouring stop valve according to claim 1, It is characterized in that The second valve body (5) is threadedly connected to a threaded rod (4), the lower end of the threaded rod (4) is rotatably connected to a moving block (17) having a convex cross-section, and the moving block (17) is snap-connected to the sealing plug (20).

5. A zero-leakage and anti-scouring stop valve according to claim 4, It is characterized in that An opening is provided on one inner wall of the water chamber, and one end of the moving block (17) is slidably connected to the opening.

6. A zero-leakage and anti-scour stop valve according to claim 1, It is characterized in that A plurality of positioning rods (2) are fixedly connected to the upper surface of the first valve body (1), and a plurality of positioning grooves are provided on the second valve body (5).

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