Stop valve

Abstract

The utility model discloses a stop valve, and relates to the technical field of stop valves. The sealing device comprises a supporting part and a sealing part, the supporting part is used for stably supporting parts in the equipment, and the sealing part is used for sealing joints in the equipment. The sealing assembly is arranged, specifically, when the valve clack is adjusted through the valve rod, the push plate is driven to extrude the rubber sealing ring, at the moment, the rubber sealing ring expands and makes contact with the inner wall of the valve body, the sealing effect on the connecting position between the valve body and the valve deck is achieved, and meanwhile when the valve deck is connected with the valve body, the sealing effect is good. At the moment, the bottom of the valve cover extrudes the sealing gasket, and the sealing gasket performs reset motion under the action of resilience force of the spring, so that the sealing effect on the joint between the valve cover and the valve body is achieved again, the situation of liquid leakage in the valve body is further reduced, and the stable usability of equipment is greatly improved; and meanwhile, the situation of environmental pollution caused by leakage is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of gate valve technology, and in particular relates to a gate valve. Background Technology

[0002] Gate valves, as a key fluid control device, play a vital role in various fields of industrial production. From petrochemicals and energy to pharmaceuticals and food processing, gate valves are widely used to precisely regulate and control the flow rate, pressure, and direction of fluids (including gases and liquids) to ensure the safe, efficient, and stable operation of the production process. However, in the use of some gate valves, their sealing effect is not ideal, resulting in leakage of liquid inside the valve body, which reduces the effectiveness of the equipment. At the same time, leakage of liquid inside the valve body will significantly increase environmental pollution and waste of resources. Therefore, a gate valve is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a gate valve that, through the setting of a sealing component, specifically, when the valve disc is adjusted by the valve stem, the push plate is driven to compress the rubber sealing ring. At this time, the rubber sealing ring expands and contacts the inner wall of the valve body, achieving a sealing effect at the connection between the valve body and the valve cover. Simultaneously, when the valve cover is connected to the valve body, the bottom of the valve cover compresses the sealing gasket. At this time, the sealing gasket is reset by the spring force, thus again achieving a sealing effect at the connection between the valve cover and the valve body. This solves the problem that the sealing effect of some gate valves is not ideal during use, resulting in leakage of liquid inside the valve body, thereby reducing the effectiveness of the equipment. At the same time, when liquid inside the valve body leaks, it will significantly increase environmental pollution and waste of resources.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model is a shut-off valve, comprising:

[0006] A support section, which is used to provide stable support for the components in the equipment;

[0007] A sealing part, which serves to seal the connection points in the equipment; and

[0008] A buffer section, which is used to buffer the impact force of the liquid;

[0009] The buffer section cushions the impact of the liquid, thereby extending the equipment's lifespan.

[0010] Furthermore, the support includes a valve body, the left and right sides of which are used to connect to pipes, and the valve body is used to cut off the flow of liquid in the pipes;

[0011] A connection assembly, disposed on top of the valve body, is used for mounting and connecting components within the equipment; and

[0012] An adjustment assembly, which is connected to the valve body via a connecting assembly;

[0013] The flow rate of the liquid inside the valve body is adjusted by regulating the components to ensure the safe, efficient and stable operation of the production process.

[0014] Furthermore, the sealing part includes a sealing assembly, which is installed between the connecting assembly and the adjusting assembly to reduce the possibility of liquid leakage inside the valve body;

[0015] The sealing components are located in two places, which can more effectively seal the equipment.

[0016] Furthermore, the buffer section includes a buffer assembly, which is installed at the bottom of the adjusting assembly and is also disposed inside the valve body;

[0017] The buffer assembly is detachable, making it easy to replace later.

[0018] Furthermore, the connecting assembly includes a valve cover, and a plurality of connecting bolts are provided inside the valve cover;

[0019] An adjusting assembly includes a handwheel, a threaded rod welded inside the handwheel, a valve stem rotatably connected to the bottom of the threaded rod, a valve disc welded to the bottom of the valve stem, a support frame threadedly connected to the outer surface of the threaded rod, the bottom of the support frame welded to the top of the valve cover, a packing plate provided on the outer surface of the threaded rod, two connecting bolts connected to the left and right sides of the inside of the packing plate, and fixed brackets connected to the left and right sides of the top of the valve cover.

[0020] The valve cover is connected to the valve body by several connecting bolts, and the bottom of two connecting bolts are connected to the inside of the fixed bracket by connecting rods. The valve stem passes through the valve cover and extends into the inside of the valve body, and the valve disc is located inside the valve body.

[0021] Furthermore, the sealing assembly includes a push plate, the inside of which is connected to the outer surface of the valve stem. A rubber sealing ring is provided at the top of the valve body, the bottom of which contacts the top of the push plate. A slot is provided at the top of the valve body, a sealing gasket is provided inside the slot, and several springs are connected to the bottom of the sealing gasket. The side of each spring away from the sealing gasket is connected to the inner wall of the slot.

[0022] The rubber sealing ring is connected to the bottom of the valve cover on the side away from the push plate, the top of the sealing gasket is in contact with the bottom of the valve cover, and the inner ring of the groove is provided with several drain holes to drain the liquid inside the groove, thereby improving the performance of the sealing gasket.

[0023] Furthermore, the buffer assembly includes an arc-shaped buffer block, the top of which contacts the bottom of the valve disc, and a number of fixing bolts are provided inside the arc-shaped buffer block;

[0024] The arc-shaped buffer block is connected to the valve disc by several fixing bolts, and the side of the arc-shaped buffer block away from the valve disc is arc-shaped.

[0025] This utility model has the following beneficial effects:

[0026] 1. This utility model, through the setting of a sealing component, specifically, when the valve disc is adjusted by the valve stem, the push plate is driven to squeeze the rubber sealing ring. At this time, the rubber sealing ring expands and contacts the inner wall of the valve body, achieving a sealing effect at the connection between the valve body and the valve cover. At the same time, when the valve cover is connected to the valve body, the bottom of the valve cover squeezes the sealing gasket. At this time, the sealing gasket is reset by the spring rebound force, thereby again achieving a sealing effect at the connection between the valve cover and the valve body. This further reduces the leakage of liquid inside the valve body, greatly improves the stable use of the equipment, and significantly reduces the environmental pollution caused by leakage.

[0027] 2. This utility model incorporates a buffer component. Specifically, during equipment use, the liquid inside the valve body first contacts the arc-shaped buffer block as it flows. The side of the arc-shaped buffer block that contacts the liquid is arc-shaped, which effectively disperses the force of the liquid flow, reduces the force exerted by the liquid on the valve disc, and reduces damage to the valve disc. This significantly extends the service life of the valve disc and reduces the financial investment required for the equipment. At the same time, the arc-shaped buffer block is connected to the valve disc by fixing bolts, facilitating the subsequent replacement of the arc-shaped buffer block.

[0028] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body of this utility model;

[0032] Figure 3 This is a schematic diagram of the overall structure of the arc-shaped buffer block of this utility model;

[0033] Figure 4 This utility model Figure 3 A magnified structural diagram of A in the middle;

[0034] Figure 5 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1. Support section; 111. Valve body; 12. Connecting assembly; 121. Connecting bolt one; 122. Valve cover; 13. Adjusting assembly; 131. Handwheel; 132. Threaded rod; 133. Support frame; 134. Packing pressure plate; 135. Connecting bolt two; 136. Fixed bracket; 137. Valve stem; 138. Valve disc; 2. Sealing section; 21. Sealing assembly; 211. Push plate; 212. Rubber sealing ring; 213. Sealing gasket; 214. Groove; 215. Spring; 216. Drain outlet; 3. Buffer section; 31. Buffer assembly; 311. Arc-shaped buffer block; 312. Fixed bolt. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figures 1-5 As shown, this utility model is a shut-off valve, comprising:

[0039] Support part 1, which is used to provide stable support for the components in the equipment;

[0040] Sealing part 2, sealing part 2 serves to seal the connection points in the equipment; and

[0041] Buffer section 3 is used to buffer the impact force of liquid;

[0042] The buffer section 3 buffers the impact force of the liquid, thereby improving the lifespan of the equipment.

[0043] The support part 1 includes a valve body 111, the left and right sides of which are used to connect to pipes, and the valve body 111 is used to cut off the liquid in the pipes;

[0044] Connection assembly 12, disposed on top of valve body 111, is used for mounting and connecting components in the equipment; and

[0045] Adjustment component 13 is connected to valve body 111 via connection component 12;

[0046] The flow rate of the liquid inside the valve body 111 is adjusted by the regulating component 13 to ensure the safe, efficient and stable operation of the production process.

[0047] The sealing part 2 includes a sealing assembly 21, which is installed between the connecting assembly 12 and the regulating assembly 13 to reduce the leakage of liquid inside the valve body 111;

[0048] The sealing assembly 21 is installed in two locations, which can more effectively seal the equipment.

[0049] The buffer section 3 includes a buffer assembly 31, which is installed at the bottom of the regulating assembly 13 and is located inside the valve body 111.

[0050] The buffer assembly 31 is detachable, which facilitates its replacement in the future.

[0051] The connecting assembly 12 includes a valve cover 122, and a plurality of connecting bolts 121 are provided inside the valve cover 122;

[0052] Adjustment assembly 13 includes a handwheel 131, a threaded rod 132 welded inside the handwheel 131, a valve stem 137 rotatably connected to the bottom of the threaded rod 132, a valve disc 138 welded to the bottom of the valve stem 137, a support frame 133 threadedly connected to the outer surface of the threaded rod 132, the bottom of the support frame 133 welded to the top of the valve cover 122, a packing pressure plate 134 provided on the outer surface of the threaded rod 132, connecting bolts 135 connected to the left and right sides inside the packing pressure plate 134, and fixed brackets 136 connected to the left and right sides of the top of the valve cover 122.

[0053] The valve cover 122 is connected to the valve body 111 by several connecting bolts 121. At the same time, the bottoms of the two connecting bolts 135 are connected to the inside of the fixed bracket 136 by connecting rods. Meanwhile, the valve stem 137 passes through the valve cover 122 and extends into the inside of the valve body 111. The valve disc 138 is located inside the valve body 111.

[0054] The sealing assembly 21 includes a push plate 211, the inside of which is connected to the outer surface of the valve stem 137. A rubber sealing ring 212 is provided at the top inside the valve body 111. The bottom of the rubber sealing ring 212 contacts the top of the push plate 211. A slot 214 is provided at the top of the valve body 111. A sealing gasket 213 is provided inside the slot 214. Several springs 215 are connected to the bottom of the sealing gasket 213. The side of the several springs 215 away from the sealing gasket 213 is connected to the inner wall of the slot 214.

[0055] The rubber sealing ring 212, on the side away from the push plate 211, is connected to the bottom of the valve cover 122. The top of the sealing gasket 213 contacts the bottom of the valve cover 122. Several drain holes 216 are provided in the inner ring of the groove 214 to drain the liquid inside the groove 214, improving the performance of the sealing gasket 213. When the valve disc 138 is adjusted by the valve stem 137, the push plate 211 will be driven to squeeze the rubber sealing ring 212. At this time, the rubber sealing ring 212 will expand and contact the inner wall of the valve body 111. This achieves a sealing effect at the connection between the valve body 111 and the valve cover 122. When the valve cover 122 is connected to the valve body 111, the bottom of the valve cover 122 will compress the sealing gasket 213. At this time, the sealing gasket 213 will be reset by the rebound force of the spring 215, thereby again sealing the connection between the valve cover 122 and the valve body 111. This further reduces the possibility of liquid leakage inside the valve body 111, greatly improves the stable use of the equipment, and significantly reduces the environmental pollution caused by leakage.

[0056] The buffer assembly 31 includes an arc-shaped buffer block 311, the top of which contacts the bottom of the valve disc 138, and a number of fixing bolts 312 are provided inside the arc-shaped buffer block 311.

[0057] The arc-shaped buffer block 311 is connected to the valve disc 138 by several fixing bolts 312. The side of the arc-shaped buffer block 311 away from the valve disc 138 is arc-shaped. During the use of the equipment, the liquid inside the valve body 111 will first come into contact with the arc-shaped buffer block 311 when it flows. The arc-shaped side of the arc-shaped buffer block 311 in contact with the liquid can effectively disperse the force of the liquid flow, reduce the force generated by the liquid on the valve disc 138, reduce the damage to the valve disc 138, thereby greatly improving the service life of the valve disc 138 and reducing the financial investment in the equipment. At the same time, the arc-shaped buffer block 311 is connected to the valve disc 138 by fixing bolts 312, which facilitates the subsequent replacement of the arc-shaped buffer block 311.

[0058] A specific application of this embodiment is as follows: In use, when it is necessary to adjust the flow rate of the liquid inside the valve body 111, the handwheel 131 is turned clockwise to drive the threaded rod 132 to rotate. Since the outer surface of the threaded rod 132 is threadedly connected to the support frame 133, and the bottom of the support frame 133 is connected to the valve cover 122, turning the handwheel 131 clockwise will drive the threaded rod 132 to move upward. When the threaded rod 132 moves, it will drive the valve stem 137 to move upward as well. At the same time, the bottom of the threaded rod 132 is connected to the top of the valve stem 137. The valve stem 137 is rotatably connected. When the valve stem 137 moves upward, it slides inside the valve cover 122. Simultaneously, the movement of the valve stem 137 drives the valve disc 138 to move. At this time, the valve disc 138 disengages from the valve seat inside the valve body 111, allowing liquid to flow through the gap between the valve disc 138 and the valve seat. By adjusting the upward distance of the valve disc 138, the flow rate of liquid inside the valve body 111 is regulated. Simultaneously, the movement of the valve stem 137 drives the push plate 211 to move as well. The movement of the push plate 211 compresses the rubber sealing ring 212, thus... The rubber sealing ring 212 expands under the limiting action of the bottom of the valve cover 122. During the expansion process, its outer ring contacts the inner wall of the valve body 111, achieving a sealing effect at the connection between the valve body 111 and the valve cover 122, reducing liquid leakage. Simultaneously, when the valve cover 122 and the valve body 111 are connected by connecting bolt 121, the bottom of the valve cover 122 contacts the top of the sealing gasket 213. At this time, the sealing gasket 213 is subjected to force and moves into the groove 214. When the spring 215 is compressed, it will contract and store force due to the limiting effect of the inner wall of the slot 214. At the same time, the spring 215 will generate a certain rebound force and drive the sealing gasket 213 to reset. When the sealing gasket 213 resets, it will contact the bottom of the valve cover 122, thereby sealing the connection between the valve cover 122 and the valve body 111 again, further reducing the leakage of liquid inside the valve body 111, greatly improving the stable use of the equipment, and at the same time greatly reducing the pollution to the environment caused by leakage.

[0059] Meanwhile, during equipment use, the liquid inside the valve body 111 will first come into contact with the arc-shaped buffer block 311 when it flows. The side of the arc-shaped buffer block 311 that comes into contact with the liquid is arc-shaped, which can effectively disperse the force of the liquid flow, reduce the force generated by the liquid on the valve disc 138, reduce the damage to the valve disc 138, thereby greatly improving the service life of the valve disc 138 and reducing the financial investment in the equipment. At the same time, the arc-shaped buffer block 311 and the valve disc 138 are connected by fixing bolts 312, which facilitates the subsequent replacement of the arc-shaped buffer block 311.

[0060] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A stop valve characterized by comprising: Include: Supporting part for stable support of parts in the device; Sealing part for sealing the connection in the device; And Buffer part for buffering the impact force of the liquid; The sealing part includes a sealing assembly installed between the connecting assembly and the adjusting assembly, which reduces the leakage of the liquid inside the valve body; Wherein, the sealing assembly is provided in two places, which can more effectively seal the equipment; The buffer part includes a buffer assembly installed at the bottom of the adjusting assembly, and the buffer assembly is provided inside the valve body; Wherein, the buffer assembly is detachably provided, which is convenient for subsequent replacement of the buffer assembly; The sealing assembly includes a push plate inside which is connected with the outer surface of the valve stem, the top of the valve body is provided with a rubber sealing ring, the bottom of the rubber sealing ring is in contact with the top of the push plate, the top of the valve body is provided with a notch, the notch is provided with a sealing washer, the bottom of the sealing washer is connected with a plurality of springs, and the side away from the sealing washer of the plurality of springs is connected with the inner wall of the notch; Wherein, the side away from the push plate of the rubber sealing ring is connected with the bottom of the valve cover, the top of the sealing washer is in contact with the bottom of the valve cover, and a plurality of drainage holes are formed in the inner circle of the notch to drain the liquid inside the notch, thereby improving the use effect of the sealing washer; The buffer assembly includes an arc surface buffer block, the top of the arc surface buffer block is in contact with the bottom of the valve flap, and a plurality of fixing bolts are arranged inside the arc surface buffer block; Wherein, the arc surface buffer block is connected with the valve flap through the fixing bolts, and the side away from the valve flap of the arc surface buffer block is arc-shaped; Wherein, the impact force of the liquid is buffered by the buffer part, thereby improving the service life of the equipment.

2. A globe valve according to claim 1, wherein The supporting part includes a valve body, the left and right sides of the valve body are used for connecting pipelines, and the valve body is used for intercepting the liquid in the pipeline; The connecting assembly is provided on the top of the valve body and is used for mounting and connecting parts in the device; And The adjusting assembly is connected with the valve body through the connecting assembly; Wherein, the flow of the liquid inside the valve body is adjusted by the adjusting assembly to ensure the safe, efficient and stable operation of the production process.

3. A globe valve according to claim 2, wherein The connecting assembly includes a valve cover, a plurality of connecting bolts are arranged inside the valve cover; The adjusting assembly includes a hand wheel, a threaded rod is welded inside the hand wheel, a valve stem is rotatably connected to the bottom of the threaded rod, a valve flap is welded to the bottom of the valve stem, a support frame is threadedly connected to the outer surface of the threaded rod, the support frame is welded to the top of the valve cover, a packing press plate is arranged on the outer surface of the threaded rod, a plurality of connecting bolts are arranged on the left and right sides of the packing press plate, and a fixed support is arranged on the left and right sides of the top of the valve cover; Wherein, the valve cover is connected with the valve body through a plurality of connecting bolts, the bottoms of the two connecting bolts are connected with the inside of the fixed support through connecting rods, the valve stem penetrates through the valve cover and extends into the valve body, and the valve flap is arranged inside the valve body.

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