Corrosion-resistant leakage-proof sealing valve

Abstract

The utility model relates to the technical field of sealing valves, in particular to a corrosion-resistant leakage-proof sealing valve, which overcomes the defects of a sealing valve in the prior art and comprises a valve body, flanges are fixedly connected to two ends of the valve body, a connecting block is fixedly connected to one side of the valve body, and a bottom plate is fixedly connected to one side of the connecting block. A fixing seat is fixedly connected to one side of the bottom plate, a worm is rotatably connected to the interior of the fixing seat, a valve handle is fixedly connected to the surface of the worm, an outer ring is fixedly connected to the surface of one side of the valve body, an inner ring is fixedly connected to the interior of the outer ring and penetrates through the valve body, and a valve rod is rotatably connected to the interior of the outer ring. The surface of the valve rod is fixedly connected with a worm gear, the worm gear is connected with the worm in a meshed mode, the surface of the valve rod is fixedly connected with a valve, and the surface of the valve rod is fixedly connected with a second sealing gasket.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing valves, in particular to a corrosion-resistant and leak-proof sealing valve. Background Art

[0002] Valves are mechanical devices that control the flow rate, direction, pressure, temperature, etc. of flowing fluid media. Valves are basic components in pipeline systems. Valve fittings are technically the same as pumps. There are many types of valves, among which the stop valve is the most widely used valve. The stop valve can stop the flow of fluid media. Usually a leak-proof and sealed stop valve is used. At present, when the stop valve is used for a long time, the sealing performance of the stop valve is poor, and fluid media leakage may occur, affecting the service life of the stop valve. There is room for improvement, and the materials used in the valve also need to be improved to make it more able to withstand corrosion and high-pressure environments.

[0003] When unclamping the conduit, the closure of the valve body is opened, and the valve body is closed by the closure of the valve core, and the closure of the valve core is opened. When unclamping the conduit, the closure of the valve core is opened, and the closure of the valve core is opened. When unclamping the conduit, the closure of the valve core is opened, and the closure of the valve core is opened.

[0004] Therefore, it is necessary to design a corrosion-resistant and leak-proof sealing valve with strong practicality, good sealing and corrosion-resistant materials. Utility Model Content

[0005] The utility model aims to provide a corrosion-resistant and leak-proof sealing valve to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant and leak-proof sealing valve, comprising a valve body, flanges are fixedly connected to both ends of the valve body, a connecting block is fixedly connected to one side of the valve body, a bottom plate is fixedly connected to one side of the connecting block, a fixed seat is fixedly connected to one side of the bottom plate, a worm is rotatably connected to the inside of the fixed seat, a valve handle is fixedly connected to the surface of the worm, an outer ring is fixedly connected to the surface of one side of the valve body, an inner ring is fixedly connected to the inside of the outer ring, the inner ring passes through the valve body, a valve stem is rotatably connected to the inside of the outer ring, a worm wheel is fixedly connected to the surface of the valve stem, the worm wheel is meshingly connected to the worm, and the valve stem is fixedly connected to the valve stem. A valve is fixedly connected to the surface of the valve stem, and a sealing gasket 2 is fixedly connected to the surface of the valve stem. The sealing gasket 2 is rotationally connected to the inner wall of the inner ring and keeps in close contact with it. A sealing gasket 1 is fixedly connected to one side of the sealing gasket 2, and the sealing gasket 1 is rotationally connected to the lower side of the inner ring and keeps in close contact with it. A limiting ring is arranged on the surface of the sealing gasket 2, and a groove is arranged on the inner wall surface of the inner ring. The limiting ring is rotationally connected to the groove on the inner wall of the inner ring, and a sealing ring is fixedly connected to the inner wall of the valve body, and the sealing ring is adapted to the size of the valve, wherein the material of the valve body, the valve and the valve stem is "Hastelloy", and the material of the sealing part is synthetic rubber, such as ethylene-propylene rubber EPDM.

[0007] According to the above technical solution, a baffle is provided on one side of the valve body.

[0008] According to the above technical solution, a plurality of supporting blocks are fixedly connected to both sides of the sealing ring.

[0009] According to the above technical solution, a plurality of guide plates are arranged on the surface of the valve.

[0010] According to the above technical solution, a fixing ring is fixedly connected to the surface of the valve stem, and the fixing ring is fixedly connected to the surface of one side of the valve.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0012] (1) By providing a worm gear and a sealing sleeve assembly, the valve handle drives the internal fixed worm to rotate, and the worm is connected to the internal rotation of the fixed seat. At this time, the worm wheel meshing with the worm on one side is driven to rotate, and the rotation of the worm wheel controls the rotation of the internal fixed valve stem. The worm is used as an active component. By transmitting the power of the high-speed rotating worm wheel to the low-speed rotating worm, the speed is reduced and the torque is increased, making the rotation opening and closing of the valve more precise. The worm gear and worm assembly have self-locking properties, making the rotation opening and closing of the valve more precise. The valve is turned. When the valve and the internal sealing ring of the valve body are completely closed, the valve body is turned. When fully closed, the entire sealing valve is sealed, and the liquid can be prevented from flowing through. The inner ring passes through the valve body to enable the valve stem to rotate in a cylinder. Sealing gasket 2 is used to prevent the liquid from passing through between the valve stem and the inner ring, and sealing gasket 1 is fixed on one side of sealing gasket 2. Refer to the figure. Sealing gasket 1 wraps the bottom of the inner ring. The gap between the inner ring and the sealing gasket is L-shaped, which greatly reduces the possibility of liquid reflux and rise from between sealing gasket 2 and the inner ring. The limit ring is connected to the inner ring for rotation, one is to ensure the stability of the rotation of sealing gasket 2 and the inner ring, and the other is to increase the sealing performance and prevent the liquid from reflux and rise.

[0013] (2) By setting special materials, the materials of the valve body, valve and valve stem are "Hastelloy alloy". Hastelloy alloy can withstand extreme corrosive environments, such as high temperature, high concentration of acid or alkali, and can withstand harsh working environments better than ordinary stainless steel. The material of the seal is synthetic rubber, such as ethylene propylene rubber EPDM, which is usually used as a sealing material for valves to resist certain corrosive fluids.

[0014] (3) By providing a support block, the sealing ring is fixed for a second time by the support block, so that even if the water flow speed is very fast and the impact force is strong, the stability of the sealing ring can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the worm gear assembly of the utility model;

[0017] Figure 3 It is a schematic diagram of the valve fixing ring of the utility model;

[0018] Figure 4 It is a schematic diagram of the sealing ring of the utility model;

[0019] Figure 5 It is a schematic diagram of the sealing assembly of the utility model;

[0020] Figure 6 It is a partial cross-sectional view of the sealing component of the utility model;

[0021] In the figure: 1. valve body; 2. flange; 3. baffle; 4. valve handle; 5. connecting block; 6. bottom plate; 7. fixing seat; 8. worm; 9. worm gear; 10. valve stem; 11. outer ring; 12. sealing ring; 13. support block; 14. valve; 15. guide plate; 16. fixing ring; 17. inner ring; 18. sealing gasket 1; 19. sealing gasket 2; 20. limiting ring. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-6 The utility model provides a technical solution: a corrosion-resistant and leak-proof sealing valve, including a valve body 1, flanges 2 are fixedly connected at both ends of the valve body 1, a connecting block 5 is fixedly connected to one side of the valve body 1, a bottom plate 6 is fixedly connected to one side of the connecting block 5, a fixed seat 7 is fixedly connected to one side of the bottom plate 6, a worm 8 is rotatably connected inside the fixed seat 7, a valve handle 4 is fixedly connected to the surface of the worm 8, an outer ring 11 is fixedly connected to the surface of one side of the valve body 1, an inner ring 17 is fixedly connected to the inner part of the outer ring 11, the inner ring 17 passes through the valve body 1, a valve stem 10 is rotatably connected to the inner part of the outer ring 11, a worm wheel 9 is fixedly connected to the surface of the valve stem 10, the worm wheel 9 is meshed with the worm 8, and the valve stem 10 is fixedly connected to the surface of the valve stem 10. The door 14 and the valve stem 10 are fixedly connected with a sealing gasket 2 19 on their surfaces, which is rotatably connected and fits with the inner wall of the inner ring 17. A sealing gasket 18 is fixedly connected to one side of the sealing gasket 2 19, which is rotatably connected and fits with the lower side of the inner ring 17. A limiting ring 20 is arranged on the surface of the sealing gasket 29, and a groove is arranged on the inner wall surface of the inner ring 17. The limiting ring 20 is rotatably connected to the groove on the inner wall of the inner ring 17. A sealing ring 12 is fixedly connected to the inner wall of the valve body 1, and the sealing ring 12 is matched in size with the valve 14. The material of the valve body 1, the valve 14 and the valve stem 10 is "Hastelloy", and the material of the sealing part is synthetic rubber, such as ethylene propylene rubber EPDM.

[0024] Specifically, the valve handle 4 is rotated, and the valve handle 4 drives the internally fixed worm 8 to rotate. The worm 8 is internally connected to the fixed seat 7 for rotation. At this time, the worm wheel 9 meshing with the worm 8 on one side is driven to rotate, and the rotation of the worm wheel 9 controls the rotation of the internally fixed valve stem 10. The worm 8 is used as an active component. By transmitting the power of the high-speed rotating worm wheel 9 to the low-speed rotating worm 8, the speed is reduced and the torque is increased, so that the rotation opening and closing of the valve 14 is more precise, and the worm wheel 9 and worm 8 assembly have self-locking properties, so that the rotation opening and closing of the valve 14 is more precise, and the valve 14 is turned. When the valve 14 and the sealing ring 12 inside the valve body 1 are completely closed, the entire sealing valve is sealed, and the flow of liquid can be prevented at this time. The inner ring 17 penetrates the valve body 1 so that the valve stem 10 can rotate in a cylinder. The second sealing gasket 19 is used to prevent the liquid from passing through between the valve stem 10 and the inner ring 17, and the sealing gasket 1 18 is fixed on one side of the sealing gasket 2 19. Figure 6 The sealing gasket 18 wraps the bottom of the inner ring 17, and the gap between the inner ring 17 and the sealing gasket is L-shaped, which greatly reduces the possibility of liquid flowing back and rising between the sealing gasket 2 19 and the inner ring 17. The limit ring 20 is rotatably connected to the inside of the inner ring 17. One is to ensure the stability of the rotation of the sealing gasket 2 19 and the inner ring 17, and the other is to increase the sealing performance and prevent the liquid from flowing back and rising. The material of the valve body 1, valve 14 and valve stem 10 is "Hastelloy". Hastelloy can withstand extreme corrosive environments, such as high temperature, high concentration of acid or alkali, and can withstand harsh working environments better than ordinary stainless steel. The material of the seal is synthetic rubber, such as ethylene propylene rubber EPDM, which is usually used as a sealing material for valves to resist certain corrosive fluids.

[0025] A baffle 3 is arranged on one side of the valve body 1 .

[0026] Specifically, the baffle 3 is used to protect the worm wheel 9 and the worm 8 to prevent accidental touch from affecting the work.

[0027] A plurality of support blocks 13 are fixedly connected to both sides of the sealing ring 12 .

[0028] Specifically, the sealing ring 12 is fixed secondarily by the supporting block 13 , so that the stability of the sealing ring 12 can be ensured even if the water flow speed is very fast and the impact force is strong.

[0029] A plurality of guide plates 15 are arranged on the surface of the valve 14 .

[0030] Specifically, the guide plate 15 is used to assist water flow to pass through the surface of the valve 14 to reduce resistance.

[0031] A fixing ring 16 is fixedly connected to the surface of the valve stem 10 , and the fixing ring 16 is fixedly connected to the surface of one side of the valve 14 .

[0032] Specifically, the fixing ring 16 is used to strengthen the fixing effect between the valve 14 and the valve stem 10 to make the structure more stable.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A corrosion-resistant and leak-proof sealing valve, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to flanges (2) at both ends; a connection block (5) is fixedly connected to one side of the valve body (1); a bottom plate (6) is fixedly connected to one side of the connection block (5); a fixed seat (7) is fixedly connected to one side of the bottom plate (6); a worm (8) is rotatably connected to the inside of the fixed seat (7); a valve handle (4) is fixedly connected to the surface of the worm (8); an outer ring (11) is fixedly connected to the inside of the outer ring (11); the inner ring (17) passes through the valve body (1); a valve stem (10) is rotatably connected to the inside of the outer ring (11); a worm wheel (9) is fixedly connected to the surface of the valve stem (10); the worm wheel (9) is meshingly connected to the worm (8); a valve (14) is fixedly connected to the surface of the valve stem (10); The surface of the valve body (10) is fixedly connected with a second sealing gasket (19), the second sealing gasket (19) is rotationally connected to the inner wall of the inner ring (17) and keeps in close contact with it, one side of the second sealing gasket (19) is fixedly connected with a first sealing gasket (18), the first sealing gasket (18) is rotationally connected to the lower side of the inner ring (17) and keeps in close contact with it, a limit ring (20) is arranged on the surface of the second sealing gasket (19), a groove is arranged on the inner wall surface of the inner ring (17), the limit ring (20) is rotationally connected to the inner wall groove of the inner ring (17), the inner wall of the valve body (1) is fixedly connected with a sealing ring (12), the sealing ring (12) is adapted to the size of the valve (14), wherein the material of the valve body (1), the valve (14) and the valve stem (10) is "Hastelloy", the material of the sealing element is synthetic rubber, and the synthetic rubber is EPDM.

2. A corrosion-resistant and leak-proof sealing valve according to claim 1, characterized in that: A baffle (3) is provided on one side of the valve body (1).

3. The corrosion-resistant and leak-proof sealing valve according to claim 1, characterized in that: A plurality of support blocks (13) are fixedly connected to both sides of the sealing ring (12).

4. The corrosion-resistant and leak-proof sealing valve according to claim 1, characterized in that: A plurality of guide plates (15) are arranged on the surface of the valve (14).

5. The corrosion-resistant and leak-proof sealing valve according to claim 1, characterized in that: A fixing ring (16) is fixedly connected to the surface of the valve stem (10), and the fixing ring (16) is fixedly connected to the surface of one side of the valve (14).

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