Bidirectional sealing gate valve

Abstract

The utility model relates to the technical field of gate valves, in particular to a bidirectional sealing gate valve. The valve comprises a valve body, flange plates are fixedly connected to the two ends of the valve body, auxiliary mounting assemblies are arranged on the arc surfaces of the flange plates, a mounting box is fixedly connected to the arc surfaces of the valve body, a worm is rotationally connected to the upper end of the mounting box, and a rotating disc is fixedly connected to the upper end of the worm. One side of the worm is in meshed connection with a worm gear, the back of the worm gear is fixedly connected with a rotating shaft, the rotating shaft is rotationally connected with the valve body, a valve plate is arranged on the inner wall of the valve body, the two ends of one side of the valve plate are fixedly connected with mounting blocks, and the mounting blocks are rotationally connected with the rotating shaft. The problems that the valve plate rotates to be separated from the sealing gasket, the sealing gasket is possibly extruded due to the fact that the valve plate rotates in the separation process, irreversible damage is possibly caused to the sealing gasket due to long-time extrusion, and then the service life of the sealing gasket is possibly shortened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a two-way sealing gate valve. Background Art

[0002] The opening and closing member of a gate valve is a gate plate. The moving direction of the gate plate is perpendicular to the fluid direction. The gate valve is sealed by the contact between the valve seat and the gate plate. Usually, the gate valve does not distinguish the inlet and outlet directions of the liquid, so that the gate valve has a two-way flow guiding function. The gate valve is composed of a valve body, a flange, a gasket, a valve plate, a mounting block, a fixing rod, a mounting box, a rotating disc, a worm, a worm gear and a rotating shaft. When using the gate valve, the valve body is fixedly installed on the flange of the pipeline through the flanges on both sides. Rotate the rotating disc on the mounting box to make the worm rotate, so that the worm gear rotates, so that the rotating shaft rotates, so that the valve plate rotates, so that the liquid can flow through. The valve plate rotates and cooperates with the gasket to achieve the sealing function, so as to block the liquid flow. The liquid can enter from the left and exit from the right or enter from the right and exit from the left. The valve plate can block, so that it has a two-way flow guiding function.

[0003] The inventor found in daily work that when the gate valve is in use and the gate valve is opened to allow water to flow through, the valve plate rotates and separates from the gasket. During the separation process, the valve plate rotates, which may squeeze the gasket. After long-term extrusion, it may cause irreversible damage to the gasket, and then may reduce the service life of the gasket. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that in the actual use process, when the gate valve is opened to allow water to flow through, the valve plate rotates and separates from the gasket. During the separation process, the valve plate rotates, which may squeeze the gasket. After long-term extrusion, it may cause irreversible damage to the gasket, and then may reduce the service life of the gasket, and to propose a two-way sealing gate valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a two-way sealing gate valve, comprising a valve body, flanges are fixedly connected at both ends of the valve body, an auxiliary mounting assembly is provided on the arc surface of the flange, a mounting box is fixedly connected to the arc surface of the valve body, a worm is rotatably connected to the upper end of the mounting box, a rotating disk is fixedly connected to the upper end of the worm, a worm wheel is meshingly connected to one side of the worm, a rotating shaft is fixedly connected to the back of the worm wheel, the rotating shaft and the valve body are rotatably connected, a valve plate is provided on the inner wall of the valve body, mounting blocks are fixedly connected to both ends of one side of the valve plate, the mounting block is rotatably connected to the rotating shaft, a fixing rod is fixedly connected to the inner wall of the valve body, the fixing rod and the mounting block are rotatably connected, a sealing assembly is provided on the inner wall of the valve body, the sealing assembly comprises a mounting piece fixedly connected to the inner wall of the valve body, a mounting groove is provided on one side of the mounting piece, a sealing gasket is provided on the inner wall of the mounting groove, an airbag is installed at the bottom of the inner wall of the mounting groove, and the airbag and the sealing gasket are fixed.

[0006] The effect achieved by the above components is: by setting up the sealing assembly, when the gate valve is opened to allow water to flow, the air bag in the mounting groove on the mounting part is deflated and contracted through the vacuum mechanism, so that the sealing gasket is completely retracted into the mounting groove, and then the valve plate rotates without squeezing the sealing gasket, thereby minimizing the wear of the sealing gasket.

[0007] Preferably, an air pump is installed on the arc surface of the valve body, and the output end of the air pump is fixed to the air bag.

[0008] The effect achieved by the above components is: starting the air pump to extract the air in the airbag.

[0009] Preferably, a sealing ring gasket is fixedly connected to the arc surface of the airbag, and the sealing ring gasket is slidably inserted into the mounting piece.

[0010] The effect achieved by the above components is: by arranging the sealing ring gasket, the airbag and the installation groove are sealed.

[0011] Preferably, the auxiliary installation assembly includes an auxiliary ring 1 slidably connected to the arc surface of the flange, one side of the auxiliary ring 1 is slidably connected to an auxiliary ring 2, and one side of the auxiliary ring 1 and the auxiliary ring 2 is fixedly connected to a plurality of evenly distributed limit plates.

[0012] The effect achieved by the above components is: when the gate valve needs to be installed, the auxiliary ring is set on the surface of the pipeline, and then the valve body is dragged so that the flange at one end and the mounting holes on the flange on the pipeline are horizontally and vertically aligned, and then the two are fixed by the limiting mechanism, and the two are limited by the limiting plate, and then the flange is fixed by bolts, so as to achieve auxiliary installation as much as possible.

[0013] Preferably, a plurality of uniformly distributed pins are slidably inserted into the arc surface of the first auxiliary ring, and a plurality of uniformly distributed positioning grooves are formed in the arc surface of the second auxiliary ring.

[0014] The effect achieved by the above components is as follows: Drag the second auxiliary ring so that it is inserted into the first auxiliary ring, insert the pins, and make them inserted into the positioning grooves.

[0015] Preferably, the pins and the positioning grooves are adapted to each other, and there are protrusions on the inner wall of the positioning grooves.

[0016] The effect achieved by the above components is as follows: By setting the protrusions, the pins are limited.

[0017] Preferably, a square block is fixedly connected to the side of the limiting plate close to the flange, and the square block is inserted into the flange.

[0018] The effect achieved by the above components is as follows: By setting the square block, the flange is assisted in being limited.

[0019] In summary, the beneficial effects of the present utility model are as follows:

[0020] In the present utility model, by setting the sealing assembly, when the gate valve is opened to allow water flow, through the air extraction mechanism, the airbag in the installation groove on the installation part is deflated and contracted, so that the sealing gasket is completely retracted into the installation groove, and then the valve plate rotation will not squeeze the sealing gasket. Furthermore, it is possible to reduce the wear of the sealing gasket as much as possible, and solve the problem that when the gate valve is opened to allow water flow, the valve plate rotates and separates from the sealing gasket, and during the separation process, the valve plate rotates, which may squeeze the sealing gasket. After long-term extrusion, it may cause irreversible damage to the sealing gasket, and thus may reduce the service life of the sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the cross-section of the installation box of the present utility model;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the cross-section of the valve body of the present utility model;

[0023] Figure 3 For the present utility model Figure 2 The enlarged three-dimensional structural schematic diagram of A;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the cross-section of the auxiliary installation component of the present utility model;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of another angle of the present utility model;

[0026] Legend: 1. Valve body; 2. Sealing assembly; 3. Auxiliary installation assembly; 4. Flange; 5. Installation box; 6. Rotating disk; 7. Worm gear; 8. Worm; 9. Rotating shaft; 10. Valve plate; 11. Installation block; 12. Fixed rod; 21. Installation part; 22. Installation groove; 23. Sealing gasket; 24. Airbag; 25. Air pump; 26. Sealing ring gasket; 31. Auxiliary ring 1; 32. Auxiliary ring 2; 33. Plug; 34. Limiting plate; 35. Square block. Detailed implementation

[0027] Refer to Figure 1 and Figure 2 as well as Figure 5 shown, the present utility model provides a technical solution: a two-way sealing gate valve includes a valve body 1, flanges 4 are fixedly connected to both ends of the valve body 1, an auxiliary installation assembly 3 is arranged on the arc surface of the flange 4, an installation box 5 is fixedly connected to the arc surface of the valve body 1, a worm 8 is rotatably connected to the upper end of the installation box 5, a rotating disk 6 is fixedly connected to the upper end of the worm 8, a worm gear 7 is meshed and connected to one side of the worm 8, a rotating shaft 9 is fixedly connected to the back of the worm gear 7, the rotating shaft 9 and the valve body 1 are rotatably connected, and a valve plate is arranged on the inner wall of the valve body 1.

[0028] 10, two ends of one side of the valve plate 10 are fixedly connected with installation blocks 11, the installation blocks 11 and the rotating shaft 9 are rotatably connected, a fixed rod 12 is fixedly connected to the inner wall of the valve body 1, the fixed rod 12 and the installation blocks 11 are rotatably connected, and a sealing assembly 2 is arranged on the inner wall of the valve body 1.

[0029] Next, the specific settings and functions of the sealing assembly 2 and the auxiliary installation assembly 3 will be specifically described.

[0030] Refer to Figure 2 and Figure 3 shown, in this implementation: the sealing assembly 2 includes an installation part 21 fixedly connected to the inner wall of the valve body 1, an installation groove 22 is opened on one side of the installation part 21, a sealing gasket 23 is arranged on the inner wall of the installation groove 22, an airbag 24 is installed at the bottom of the inner wall of the installation groove 22, the airbag 24 and the sealing gasket 23 are fixed. By setting the sealing assembly 2, when the gate valve is opened to allow water to flow, through the air extraction mechanism, the airbag 24 in the installation groove 22 on the installation part 21 deflates and contracts, so that the sealing gasket 23 is completely retracted into the installation groove 22, and then the valve plate 10 rotates without squeezing the sealing gasket 23, thereby minimizing the wear of the sealing gasket 23 as much as possible. An air pump 25 is installed on the arc surface of the valve body 1, the output end of the air pump 25 is fixed to the airbag 24, the air pump 25 is started to extract the air in the airbag 24, a sealing ring gasket 26 is fixedly connected to the arc surface of the airbag 24, and the sealing ring gasket 26 is slidably inserted into the installation part 21. By setting the sealing ring gasket 26, the seal between the airbag 24 and the installation groove 22 is achieved.

[0031] Refer to Figure 4As shown in the figure, in this embodiment: The auxiliary installation component 3 includes an auxiliary ring 31 slidably connected to the arc surface of the flange 4. One side of the auxiliary ring 31 is slidably connected with an auxiliary ring 32. One side of the auxiliary ring 31 and the auxiliary ring 32 is fixedly connected with a plurality of uniformly distributed limiting plates 34. When installing the gate valve, the auxiliary ring 32 is sleeved on the surface of the pipeline, and then the valve body 1 is dragged so that the installation holes on the flange 4 at one end of it and the flange 4 on the pipeline are horizontally and vertically aligned. Then, through the limiting mechanism, the two are fixed. Under the action of the limiting plate 34, the two are limited, and then the flange is fixed by bolts, so as to achieve auxiliary installation as much as possible. A plurality of uniformly distributed pins 33 are slidably inserted into the arc surface of the auxiliary ring 31. A plurality of uniformly distributed positioning grooves are formed on the arc surface of the auxiliary ring 32. Drag the auxiliary ring 32 so that it is inserted into the auxiliary ring 31, insert the pin 33 so that it is inserted into the positioning groove. The pin 33 and the positioning groove are adapted to each other. There are protrusions on the inner wall of the positioning groove. By setting the protrusions, the pin 33 is limited. One side of the limiting plate 34 close to the flange 4 is fixedly connected with a square block 35. The square block 35 is inserted into the flange 4. By setting the square block 35, the flange 4 is auxiliarily limited.

[0032] Working principle:

[0033] When using the gate valve, the valve body 1 is installed and fixed to the flange on the pipeline through the flanges 4 on both sides. Rotate the rotating disk 6 on the installation box 5, so that the worm 8 rotates, thereby making the worm gear 7 rotate, making the rotating shaft 9 rotate, and thus making the valve plate 10 rotate, so that the liquid can flow through. The valve plate 10 rotates, cooperating with the gasket 23 to achieve the sealing function, blocking the liquid flow. The liquid can enter from the left and exit from the right or enter from the right and exit from the left. The valve plate 10 can block, so that it has the function of two-way flow guiding. When opening the gate valve to allow water to flow through, start the air pump 25 to extract the air in the extraction airbag 24, so that the airbag 24 in the installation groove 22 on the installation part 21 deflates and shrinks, driving the gasket 23 to completely retract into the installation groove 22. Then the rotation of the valve plate 10 will not squeeze the gasket 23, so as to reduce the wear of the gasket 23 as much as possible. By setting the sealing ring gasket 26, the airbag 24 and the installation groove 22 are sealed. When installing the gate valve, the auxiliary ring 32 is sleeved on the surface of the pipeline, and then the valve body 1 is dragged so that the installation holes on the flange 4 at one end of it and the flange 4 on the pipeline are horizontally and vertically aligned. Then drag the auxiliary ring 32 so that it is inserted into the auxiliary ring 31, insert the pin 33 so that it is inserted into the positioning groove, and fix the two. Under the action of the limiting plate 34, the two are limited, and then the flange is fixed by bolts, so as to achieve auxiliary installation as much as possible. By setting the protrusions, the pin 33 is limited. By setting the square block 35, the flange 4 is auxiliarily limited.

[0034] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

Claims

1. A two-way sealed gate valve, comprising a valve body (1), characterized in that: Both ends of the valve body (1) are fixedly connected with flange plates (4). An auxiliary installation component (3) is arranged on the arc surface of the flange plate (4). An installation box (5) is fixedly connected to the arc surface of the valve body (1). A worm (8) is rotatably connected to the upper end of the installation box (5). A rotating disk (6) is fixedly connected to the upper end of the worm (8). A worm gear (7) is meshed and connected to one side of the worm (8). A rotating shaft (9) is fixedly connected to the back of the worm gear (7). The rotating shaft (9) is rotatably connected to the valve body (1). A valve plate (10) is arranged on the inner wall of the valve body (1). Installation blocks (11) are fixedly connected to both ends of one side of the valve plate (10). The installation blocks (11) are rotatably connected to the rotating shaft (9). A fixed rod (12) is fixedly connected to the inner wall of the valve body (1). The fixed rod (12) is rotatably connected to the installation block (11). A sealing component (2) is arranged on the inner wall of the valve body (1). The sealing component (2) includes a mounting piece (21) fixedly connected to the inner wall of the valve body (1). An installation groove (22) is formed on one side of the mounting piece (21). A sealing gasket (23) is arranged on the inner wall of the installation groove (22). An airbag (24) is installed at the bottom of the inner wall of the installation groove (22). The airbag (24) is fixed to the sealing gasket (23).

2. The two-way sealed gate valve according to claim 1, wherein: An air pump (25) is installed on the arc surface of the valve body (1). The output end of the air pump (25) is fixed to the airbag (24).

3. The bi-directional seal gate valve according to claim 2, wherein: A sealing ring gasket (26) is fixedly connected to the arc surface of the airbag (24). The sealing ring gasket (26) is slidably inserted into the mounting piece (21).

4. The two-way sealed gate valve according to claim 3, wherein: The auxiliary installation component (3) includes an auxiliary ring one (31) slidably connected to the arc surface of the flange plate (4). An auxiliary ring two (32) is slidably connected to one side of the auxiliary ring one (31). A plurality of uniformly distributed limiting plates (34) are fixedly connected to one side of the auxiliary ring one (31) and the auxiliary ring two (32).

5. The two-way sealing gate valve according to claim 4, wherein: A plurality of uniformly distributed pins (33) are slidably inserted into the arc surface of the auxiliary ring one (31). A plurality of uniformly distributed positioning grooves are formed on the arc surface of the auxiliary ring two (32).

6. The bi-directional seal gate valve according to claim 5, wherein: The pins (33) are adapted to the positioning grooves. There are protrusions on the inner wall of the positioning grooves.

7. A two-way sealed gate valve according to claim 6, characterized in that: A square block (35) is fixedly connected to the side of the limiting plate (34) close to the flange plate (4). The square block (35) is inserted into the flange plate (4).

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