A gate valve structure

Abstract

The utility model belongs to valve technical field, concretely relates to a gate valve structure. The utility model provides a gate valve structure, including the valve body, the inside of valve body is equipped with the disc plate for controlling fluid on -off, the disc plate is connected with the valve stem of driving its rotation, one side of disc plate is equipped with the anti -accumulation subassembly, and the anti -accumulation subassembly includes the annular agitator ring of setting at one side of disc plate, and the agitator ring can rotate relative to valve body, and the agitator ring is connected with the stirring drive device of driving its rotation. Through setting the anti -accumulation subassembly at one side of disc plate, the impurity in water can be accumulated on the agitator ring, before disc plate opening, first control the rotation of agitator ring, make the impurity in lower end rotate to upper end, and the impurity will be scattered in water in the rotation process, reduce the impurity accumulation, avoid the problem that the disc plate sealing performance reduces when its partial place is influenced by the impurity and produces deformation, improved the sealing of disc plate.

Description

Technical Field

[0001] This utility model belongs to the field of valve equipment technology, and specifically relates to a gate valve sealing structure. Background Technology

[0002] Gate valves are relatively simple regulating valves, typically used for shutting off or throttling various types of fluids in pipelines. Gate valves offer advantages such as simple structure, small size, light weight, and low fluid resistance. However, when the fluid in the pipeline contains a large amount of impurities, a significant amount of impurities accumulates on one side of the disc after the valve is closed for a period of time. This uneven force on the disc during rotation can cause deformation and reduce its sealing performance. Therefore, it is necessary to optimize the sealing structure of the gate valve.

[0003] In view of the above problems, it is particularly important to design a gate valve structure that can effectively improve the sealing performance of the gate valve. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a gate valve that can improve sealing performance.

[0005] To solve the above-mentioned technical problems, the present invention provides a gate valve structure, including a valve body, an inner side of which is provided with a disc for controlling the flow of fluid, the disc being connected to a valve stem that drives it to rotate, and an anti-accumulation component on one side of the disc, the anti-accumulation component including an annular agitator ring disposed on one side of the disc, the agitator ring being rotatable relative to the valve body, and the agitator ring being connected to an agitator drive device that drives it to rotate.

[0006] By setting an anti-accumulation component on one side of the disc plate, impurities in the water will accumulate on the agitator ring. Before the disc plate is opened, the agitator ring is controlled to rotate, so that the impurities at the bottom are moved to the top. During the rotation, the impurities will be scattered in the water, reducing the accumulation of impurities. This avoids the problem of the disc plate being deformed due to the influence of impurities when it rotates, thus reducing the sealing performance of the disc plate and improving its sealing performance.

[0007] Furthermore, the agitation drive device includes an agitation sleeve surrounding the valve stem, the agitation sleeve being rotatably connected to the valve body, a drive cover plate being provided on the outer side of the middle part of the agitation sleeve, the drive cover plate being detachably connected to the valve body, a sealing ring being provided between the drive cover plate and the valve body, a drive chamber being provided between the drive cover plate and the valve body, the drive chamber extending inward from the outer side of the valve body, and a transmission gear set for driving the agitation ring to rotate being installed inside the drive chamber.

[0008] Furthermore, the valve stem is composed of an upper valve stem and a lower valve stem that can be interlocked. The upper valve stem is threadedly connected to the agitator sleeve, and the lower valve stem is fitted inside the agitator sleeve. The lower valve stem is connected to the valve stem connecting plate, and the upper valve stem can slide relative to the lower valve stem.

[0009] Furthermore, both the upper valve stem and the lower valve stem have arc-shaped blocks at their relatively close ends. The two arc-shaped blocks can form a cylinder. The planes of the two arc-shaped blocks are close to each other, ensuring that the two arc-shaped blocks can slide up and down relative to each other but cannot rotate relative to each other, thereby enabling the upper valve stem to slide relative to the lower valve stem. Attached Figure Description

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the anti-accumulation component of this utility model;

[0013] Figure 3 This is a schematic diagram of the preferred valve stem configuration of this utility model;

[0014] Figure 4 This is a three-dimensional structural diagram of the anti-stacking component of this utility model;

[0015] Figure 5 This is a schematic diagram of the internal structure of the drive compartment of this utility model.

[0016] In the diagram: 101-valve body, 201-disc plate, 209-valve stem connecting plate, 301-stirring ring, 302-idler wheel, 303-limiting ring, 304-transition gear, 305-rotating shaft, 306-driven bevel gear, 307-driving bevel gear, 308-stirring sleeve, 309-upper valve stem, 310-lower valve stem, 311-drive cover plate, 312-drive chamber, 313-drive seat, 4-valve stem. Detailed Implementation

[0017] See attached document Figure 1 and attached Figure 2 This utility model provides a gate valve structure, including a valve body 101, the interior of which is open from left to right to facilitate fluid passage. The inner side of the valve body 101 is provided with a disc 201 for controlling fluid flow. The disc 201 is connected to a valve stem 4 that drives its rotation. The valve stem 4 is rotatably connected to the valve body 101 and has a seal at the connection point to prevent fluid leakage. Rotating the valve stem 4 causes the disc 201 to rotate, thereby opening and closing the gate valve.

[0018] A backfilling prevention assembly is provided on one side of the disc 201. The backfilling prevention assembly includes an annular stirring ring 301 disposed on one side of the disc 201. The stirring ring 301 is rotatable relative to the valve body 101. The side of the stirring ring 301 closest to the disc 201 contacts the valve body 101 and is provided with sealing material, such as a sealing ring or sealing filler. The other side of the stirring ring 301 is provided with a limiting ring 303 for limiting its position. Sealing material, such as a sealing ring or sealing filler, is provided between the stirring ring 301 and the limiting ring 303. The limiting ring 303 is fixed to the side of the valve body 101. To prevent the limiting ring 303 from protruding from the side of the valve body 101, those skilled in the art can provide a groove on the side of the valve body 101 to fix the limiting ring 303 inside the groove. The stirring ring 301 is connected to a stirring drive device that drives its rotation. With this structure, when there are many impurities in the water, a large amount of impurities, such as sand, tend to accumulate at the lower end of the disc 201 after the valve has been closed for a period of time. When the disc 201 rotates, its lower end will be blocked by these impurities, resulting in greater resistance at the lower end than at the upper end. This uneven force on the disc 201 can cause deformation, affecting its sealing performance. By setting up an agitator ring 301, impurities in the water will accumulate on the agitator ring 301. Before the disc 201 is opened, the agitator ring 301 is controlled to rotate, causing the impurities at the lower end to move to the upper end. During rotation, the impurities are dispersed in the water, reducing impurity accumulation and preventing the disc 201 from deforming due to localized impurities during rotation, thus avoiding a decrease in its sealing performance.

[0019] See Figure 2 , Figure 4 and Figure 5The agitation drive device includes an agitation sleeve 308 surrounding the valve stem 4. The agitation sleeve 308 is equipped with a driver, such as a motor with a brake, to drive its rotation. The agitation sleeve 308 is rotatably connected to the valve body 101. Sealing rings or sealing fillers to prevent water leakage are provided between the agitation sleeve 308, the valve stem 4, and the valve body 101. A drive cover plate 311 is provided on the outer side of the middle portion of the agitation sleeve 308. The drive cover plate 311 is detachably fastened to the valve body 101. A sealing ring is provided between the drive cover plate 311 and the valve body 101. A drive chamber 312 is provided between the drive cover plate 311 and the valve body 101. The drive chamber 312 extends inward from the outer side of the valve body 101, and transmission gears for driving the agitation ring 301 to rotate are installed inside the drive chamber 312. The gear set includes a drive bevel gear 307 fixed to the outside of the agitator sleeve 308. The drive bevel gear 307 is coaxially arranged with the agitator sleeve 308. The drive bevel gear 307 meshes with the driven bevel gear 306. The driven bevel gear 306 is fixed to a rotating shaft 305. The rotating shaft 305 is rotatably connected to a drive seat 312. One end of the rotating shaft 305 is fixed to the driven bevel gear 306. The middle part of the rotating shaft 305 is rotatably connected to the drive seat 313. The other end of the rotating shaft 305 is provided with a transition gear 304. An idler gear 302 for transmission is provided between the transition gear 304 and the agitator ring 301. The idler gear 302 is rotatably connected to the drive seat 313 and meshes with the agitator ring 301. The drive seat 313 is located inside the drive chamber 312.

[0020] Through the above structure, the operator controls the rotation of the agitator sleeve 308. The agitator sleeve 308, via the driving bevel gear 307 fixed to its outer side, causes the driven bevel gear 306 to rotate. The driven bevel gear 306, via the rotating shaft 305, causes the intermediate gear 304 to rotate. The intermediate gear 304, via the idler gear 302, drives the agitator ring 301 to rotate. When the agitator ring 301 rotates, it can cause the impurities deposited on it to rotate. When the impurities rotate relative to the water, they will disperse in the water, preventing the accumulation of impurities. Then, the valve stem 4 is controlled to drive the disc 201 to rotate, thereby opening the gate valve.

[0021] See preferred options Figure 3The valve stem 4 consists of an upper valve stem 309 and a lower valve stem 310 that can be interlocked. The upper valve stem 309 and the lower valve stem 310 have a certain axial distance. The upper end of the upper valve stem 309 is equipped with a motor with a braking function, and the braking function of this motor can be controlled independently. The upper valve stem 309 is threadedly connected to an agitator sleeve 308, and the lower valve stem 310 is fitted inside the agitator sleeve 308. The lower valve stem 310 is connected to a valve stem connecting plate 209. Both the upper valve stem 309 and the lower valve stem 310 have arc-shaped blocks at their relatively close ends. The two arc-shaped blocks can form a cylinder, and their planes are close to each other, ensuring that the two arc-shaped blocks can slide relative to each other but cannot rotate relative to each other, thus allowing the upper valve stem 309 to slide relative to the lower valve stem 310. Through the above structure, this utility model firstly releases the brake system of the motor connected to the upper valve stem 309 through the circuit system, and then drives the agitator sleeve 308 to rotate through the motor connected to the agitator sleeve 308. Since the lower valve stem 310 is connected to the valve plate 201 through the valve stem connecting plate 209 and the valve plate 201 is under water pressure when closed, and since the upper valve stem 309 and the lower valve stem 310 are interlocked and the upper valve stem 309 is threadedly connected to the agitator sleeve 308, the upper valve stem 309 can move downward when the agitator sleeve 308 rotates. The agitator sleeve 308 drives the agitator ring 301 to rotate through the transmission gear set. As the agitator sleeve 308 rotates, the upper valve stem 309 continues to move downwards. The arc-shaped block of the upper valve stem 309 contacts the upper end face of the lower valve stem 310. At this point, the upper valve stem 309 cannot move further downwards. The rotation of the agitator sleeve 308 drives the lower valve stem 310 to rotate via the upper valve stem 309. The rotation of the lower valve stem 310 then drives the disc 201 to rotate via the valve stem connecting plate 209, thus opening the gate valve. Simply rotating the agitator sleeve 308 is sufficient to achieve the rotation of the agitator ring 301 and the opening of the valve plate 201 in sequence, making operation simple. In emergency situations requiring rapid valve plate 201 opening, rotating the upper valve stem 309, which engages with the lower valve stem 310, allows the upper valve stem 309 to drive the lower valve stem 310 to rotate, enabling rapid opening of the valve plate 201.

[0022] This invention features an anti-accumulation component on one side of the disc plate. Impurities in the water accumulate on the agitator ring. Before the disc plate is opened, the agitator ring is rotated to move the impurities from the bottom to the top. During rotation, the impurities are dispersed in the water, reducing impurity accumulation. This prevents the disc plate from deforming due to impurities during rotation, thus reducing its sealing performance and improving its service life and sealing performance.

[0023] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A gate valve structure, comprising a valve body, characterized in that, The valve body has a disc plate on its inner side for controlling the flow of fluid. The disc plate is connected to a valve stem that drives it to rotate. An anti-accumulation component is provided on one side of the disc plate. The anti-accumulation component includes an annular agitator ring disposed on one side of the disc plate. The agitator ring is rotatable relative to the valve body. The agitator ring is connected to an agitator drive device that drives it to rotate.

2. The gate valve structure as described in claim 1, characterized in that, The agitation drive device includes an agitation sleeve circumferentially disposed on the outside of the valve stem. The agitation sleeve is rotatably connected to the valve body. A drive cover plate is provided on the outer side of the middle part of the agitation sleeve. The drive cover plate is detachably connected to the valve body. A sealing ring is provided between the drive cover plate and the valve body. A drive chamber is provided between the drive cover plate and the valve body. The drive chamber extends inward from the outside of the valve body. A transmission gear set for driving the agitation ring to rotate is installed in the drive chamber.

3. A gate valve structure as described in claim 2, characterized in that, The valve stem consists of an upper valve stem and a lower valve stem that can be interlocked. The upper valve stem is threadedly connected to the agitator sleeve, and the lower valve stem is fitted inside the agitator sleeve. The lower valve stem is connected to the valve stem connecting plate, and the upper valve stem can slide relative to the lower valve stem.

4. A gate valve structure as described in claim 3, characterized in that, Both the upper valve stem and the lower valve stem have arc-shaped blocks at their relatively close ends. The two arc-shaped blocks can form a cylinder. The planes of the two arc-shaped blocks are close to each other, ensuring that the two arc-shaped blocks can slide up and down relative to each other but cannot rotate relative to each other, thereby enabling the upper valve stem to slide relative to the lower valve stem.

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