Durable leakproof valve

Abstract

The utility model relates to the related technical field of valves, in particular to a durable leakproof valve which comprises a valve body, one end of the valve body is fixedly connected with a flange plate, a switching mechanism is arranged on the inner side surface of the valve body, and a sealing mechanism is arranged on the inner side surface of the valve body. According to the durable leakproof valve, through the arrangement of the switching mechanism, when the durable leakproof valve is used, a hand wheel is rotated, the valve rod, the valve element and the supporting block are driven to rotate, the valve element rotates, a center fluid flowing channel is rotated to the two sides, fluid can be cut off, a first sealing face is formed, at the moment, a hydraulic cylinder is started, the hydraulic rod and the valve plate are pushed to move downwards, and after the bottom is reached, sealing is achieved. The valve plate is in contact with the valve body to form a second sealing surface, the two groups of sealing surfaces can cut off fluid and play a sealing role, and the two groups of sealing surfaces are used together, so that the sealing performance and durability are more excellent, the reliability is higher, and the risk of leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to valves, and in particular to a durable anti-leakage valve. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion, or overflow pressure relief. Valves used in fluid control systems, from the simplest shut-off valves to various valves used in extremely complex automatic control systems, have a wide variety of varieties and specifications. Therefore, a durable, leak-proof valve is particularly needed.

[0003] However, the existing durable anti-leakage valves generally have only one sealing surface. If the sealing surface is not completely sealed due to special circumstances during use, there will be a risk of leakage, which reduces the reliability of the equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a durable anti-leakage valve to solve the problem that the existing durable anti-leakage valves proposed in the above background technology generally have only one sealing surface. If the sealing surface is not completely sealed due to special circumstances during use, there will be a risk of leakage, which reduces the reliability of the equipment.

[0005] To achieve the above object, the utility model provides the following technical solutions: a durable anti-leakage valve, comprising a valve body, one end of the valve body is fixedly connected to a flange, the inner surface of the valve body is provided with a switch mechanism, and the inner surface of the valve body is provided with a sealing mechanism;

[0006] The switch mechanism includes a fixing ring, a support block, a valve core, a valve stem, a handwheel, a protective sleeve, a hydraulic cylinder, a hydraulic rod and a valve plate. The inner surface of the valve body is fixedly connected to the fixing ring, the inner surface of the fixing ring is rotatably connected to the support block, the upper surface of the support block is fixedly connected to the valve core, the upper surface of the valve core is fixedly connected to the valve stem, the upper surface of the valve stem is fixedly connected to the handwheel, the outer surface of the valve stem is rotatably connected to the protective sleeve, the inner surface of the valve body is fixedly connected to the hydraulic cylinder, the lower surface of the hydraulic cylinder is fixedly connected to the hydraulic rod, and the lower surface of the hydraulic rod is fixedly connected to the valve plate.

[0007] Preferably, the flange is symmetrically arranged with respect to the central axis of the valve body, and the valve core is a sphere passing through the center.

[0008] Preferably, the protective sleeve is fixedly connected to the valve body, and a plurality of hydraulic rods are arranged on the lower surface of the hydraulic cylinder.

[0009] Preferably, the sealing mechanism includes a fixed block, a sealing groove, a sealing ring and a packing, the inner surface of the valve body is fixedly connected to the fixed block, a sealing groove is opened on one side surface of the fixed block, the inner surface of the sealing groove is fixedly connected to the sealing ring, and the inner surface of the valve body is fixedly connected to the packing.

[0010] Preferably, the fixing block is symmetrically arranged with respect to the central axis of the valve body, and the inner wall size of the sealing groove is consistent with the outer wall size of the sealing ring.

[0011] Compared with the prior art, the beneficial effects of the utility model are: this is a durable and leak-proof valve, through the setting of the switching mechanism, when in use, the hand wheel is turned to drive the valve stem, valve core and support block to rotate, the valve core rotates, and the channel for the flow of the central fluid is rotated to both sides, so that the fluid can be cut off, forming the first sealing surface. At this time, the hydraulic cylinder is started to push the hydraulic rod and the valve plate to move downward. After reaching the bottom, the valve plate contacts the valve body and forms the second sealing surface. Both sets of sealing surfaces can cut off the fluid and achieve a sealing effect. When the two sets of sealing surfaces are used together, they have better sealing performance and durability, and have higher reliability, reducing the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the valve body and flange plate cooperating with each other in the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the fixed ring and the valve core cooperating with each other in the utility model;

[0015] Figure 4 This is a schematic diagram of the structure in which the sealing groove and the sealing ring cooperate with each other in the utility model.

[0016] In the figure: 1. valve body; 2. flange; 3. switch mechanism; 301. fixing ring; 302. support block; 303. valve core; 304. valve stem; 305. hand wheel; 306. protective sleeve; 307. hydraulic cylinder; 308. hydraulic rod; 309. valve plate; 4. sealing mechanism; 401. fixing block; 402. sealing groove; 403. sealing ring; 404. packing. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-4 The utility model provides a technical solution: a durable anti-leakage valve, comprising a valve body 1, one end of the valve body 1 is fixedly connected to a flange 2, the inner surface of the valve body 1 is provided with a switch mechanism 3, and the inner surface of the valve body 1 is provided with a sealing mechanism 4;

[0019] The switch mechanism 3 includes a fixing ring 301, a support block 302, a valve core 303, a valve stem 304, a hand wheel 305, a protective sleeve 306, a hydraulic cylinder 307, a hydraulic rod 308 and a valve plate 309. The inner surface of the valve body 1 is fixedly connected with the fixing ring 301, the inner surface of the fixing ring 301 is rotatably connected with the support block 302, the upper surface of the support block 302 is fixedly connected with the valve core 303, the upper surface of the valve core 303 is fixedly connected with the valve stem 304, the upper surface of the valve stem 304 is fixedly connected with the hand wheel 305, the outer surface of the valve stem 304 is rotatably connected with the protective sleeve 306, the inner surface of the valve body 1 is fixedly connected with the hydraulic cylinder 307, the lower surface of the hydraulic cylinder 307 is fixedly connected with the hydraulic rod 308, and the lower surface of the hydraulic rod 308 is fixedly connected with the valve plate 309. The arrangement of the fixed ring 301, the support block 302, the valve core 303, the valve stem 304, the hand wheel 305, the protective sleeve 306, the hydraulic cylinder 307, the hydraulic rod 308 and the valve plate 309. When in use, the hand wheel 305 is turned to drive the valve stem 304, the valve core 303 and the support block 302 to rotate. The valve core 303 rotates to rotate the channel for the flow of the central fluid to both sides, so that the fluid can be cut off to form the first sealing surface. At this time, the hydraulic cylinder 307 is started to push the hydraulic rod 308 and the valve plate 309 to move downward. After reaching the bottom, the valve plate 309 contacts the valve body 1 to form the second sealing surface. The two sets of sealing surfaces can cut off the fluid and achieve a sealing effect. The two sets of sealing surfaces are used together to have better sealing performance and durability, and have higher reliability, reducing the risk of leakage.

[0020] Furthermore, the flange 2 is symmetrically arranged with respect to the central axis of the valve body 1, and the valve core 303 is a sphere passing through the center. Through the arrangement of the flange 2, when in use, the valve can be connected to a place where a valve is needed to fix the valve.

[0021] Furthermore, the protective sleeve 306 is fixedly connected to the valve body 1, and multiple groups of hydraulic rods 308 are arranged on the lower surface of the hydraulic cylinder 307. Through the arrangement of the protective sleeve 306, when in use, the protective sleeve 306 separates the two sets of sealing surfaces so that they will not interfere with each other when working.

[0022] Furthermore, the sealing mechanism 4 includes a fixed block 401, a sealing groove 402, a sealing ring 403 and a packing 404. The inner surface of the valve body 1 is fixedly connected with the fixed block 401, a sealing groove 402 is provided on one side surface of the fixed block 401, a sealing ring 403 is fixedly connected to the inner surface of the sealing groove 402, and a packing 404 is fixedly connected to the inner surface of the valve body 1. Through the arrangement of the fixed block 401, the sealing groove 402, the sealing ring 403 and the packing 404, when in use, the outer surface of the valve plate 309 is provided with a sealing groove 402. When the valve plate 309 descends, the sealing ring 403 is deformed and enters into the sealing groove 402 to isolate the fluid, thereby improving the sealing effect of the valve plate 309. The packing 404 can fill the gap between the valve stem 304 and the valve body 1 to prevent fluid leakage.

[0023] Furthermore, the fixing block 401 is symmetrically arranged with respect to the central axis of the valve body 1, and the inner wall size of the sealing groove 402 is consistent with the outer wall size of the sealing ring 403. Through the arrangement of the sealing groove 402 and the sealing ring 403, when in use, the sealing ring 403 will enter the sealing groove 402, and the sealing groove 402 will limit the sealing ring 403, so that the sealing effect of the sealing ring 403 is better.

[0024] Working principle: When in use, the packing 404 can fill the gap between the valve stem 304 and the valve body 1 to prevent fluid leakage. Turn the hand wheel 305 to drive the valve stem 304, the valve core 303 and the support block 302 to rotate. The valve core 303 rotates to rotate the channel for the central fluid flow to both sides, so that the fluid can be cut off and become the first sealing surface. At this time, the hydraulic cylinder 307 is started to push the hydraulic rod 308 and the valve plate 309 to move downward. After reaching the bottom, the valve plate 309 contacts the valve body 1. The outer surface of the valve plate 309 is provided with a sealing groove 402. When the valve plate 309 descends, the sealing ring 403 is deformed and enters the sealing groove 402 to cut off the fluid, so that the sealing effect of the valve plate 309 is better, becoming the second sealing surface. The two sets of sealing surfaces can cut off the fluid and achieve a sealing effect. The two sets of sealing surfaces are used together, which has better sealing performance and durability, and has higher reliability and reduces the risk of leakage.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A durable anti-leakage valve, comprising a valve body (1), characterized in that: One end of the valve body (1) is fixedly connected to a flange (2), the inner surface of the valve body (1) is provided with a switch mechanism (3), and the inner surface of the valve body (1) is provided with a sealing mechanism (4); The switch mechanism (3) comprises a fixing ring (301), a support block (302), a valve core (303), a valve stem (304), a hand wheel (305), a protective sleeve (306), a hydraulic cylinder (307), a hydraulic rod (308) and a valve plate (309); the inner surface of the valve body (1) is fixedly connected to the fixing ring (301); the inner surface of the fixing ring (301) is rotatably connected to the support block (302); the upper surface of the support block (302) is fixedly connected to the valve core (303). 3), the upper surface of the valve core (303) is fixedly connected to a valve stem (304), the upper surface of the valve stem (304) is fixedly connected to a hand wheel (305), the outer surface of the valve stem (304) is rotatably connected to a protective sleeve (306), the inner surface of the valve body (1) is fixedly connected to a hydraulic cylinder (307), the lower surface of the hydraulic cylinder (307) is fixedly connected to a hydraulic rod (308), and the lower surface of the hydraulic rod (308) is fixedly connected to a valve plate (309).

2. A durable anti-leakage valve according to claim 1, characterized in that: The flange (2) is symmetrically arranged with respect to the central axis of the valve body (1), and the valve core (303) is a sphere passing through the center.

3. A durable anti-leakage valve according to claim 1, characterized in that: The protective sleeve (306) is fixedly connected to the valve body (1), and a plurality of hydraulic rods (308) are arranged on the lower surface of the hydraulic cylinder (307).

4. A durable anti-leakage valve according to claim 1, characterized in that: The sealing mechanism (4) comprises a fixed block (401), a sealing groove (402), a sealing ring (403) and a packing (404); the inner surface of the valve body (1) is fixedly connected to the fixed block (401); a sealing groove (402) is provided on one side surface of the fixed block (401); the inner surface of the sealing groove (402) is fixedly connected to the sealing ring (403); and the inner surface of the valve body (1) is fixedly connected to the packing (404).

5. A durable anti-leakage valve according to claim 4, characterized in that: The fixing block (401) is symmetrically arranged with respect to the central axis of the valve body (1), and the inner wall size of the sealing groove (402) is consistent with the outer wall size of the sealing ring (403).

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