A wedge gate valve

Abstract

The utility model discloses a wedge gate valve relates to wedge gate valve technical field. The utility model discloses a valve body, the top of valve body is installed with the valve cover, the top of valve cover is installed with the support, the inside installation of valve body has the valve seat, the inner wall sliding connection of valve body has the wedge valve plate, still includes, the guide portion is installed in the inside of valve cover, and the guide portion is used for keeping the stable process of the movement of wedge valve plate. The utility model discloses through the limiting component, specifically is in the process of the movement of wedge valve plate, when the valve stem drives the movement of wedge valve plate, and the connecting block of valve stem outer wall drives the sliding of limiting block in the limiting groove, and the movement path of valve stem and wedge valve plate plays the guiding and limiting effect, guarantees the stable movement of wedge valve plate, and will not shift or sway, thereby make the opening and closing process of valve more reliable.

Description

Technical Field

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

[0002] A wedge gate valve is a type of gate valve with a wedge-shaped gate. The valve is opened and closed by the wedge plate being raised and lowered by the valve stem. It has advantages such as good sealing performance, low fluid resistance, and relatively easy opening and closing, and is widely used in petroleum, chemical, and power industries. However, during operation, the wedge plate is subjected to various forces, including medium pressure and friction, during opening and closing. The wedge plate is prone to displacement, jamming, or even damage during movement, affecting the normal operation and service life of the valve. Furthermore, some existing wedge gate valve designs do not facilitate guiding and limiting the moving wedge plate, leading to unstable gate trajectory, accelerated wear of the sealing surface, decreased valve sealing performance, and media leakage. Utility Model Content

[0003] The purpose of this utility model is to provide a wedge gate valve that, by setting a limiting component, specifically, during the movement of the wedge valve plate, when the valve stem drives the wedge valve plate to move, the connecting block on the outer wall of the valve stem drives the limiting block to slide within the limiting groove, which guides and limits the movement path of the valve stem and the wedge valve plate, ensuring the stable movement of the wedge valve plate and preventing deviation or shaking. This makes the opening and closing process of the valve more reliable and solves the problem that some existing wedge gate valve designs are not convenient for guiding and limiting the moving wedge valve plate.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a wedge gate valve, including a valve body, a valve cover installed on the top of the valve body, a bracket installed on the top of the valve cover, a valve seat installed inside the valve body, and a wedge valve plate slidably connected to the inner wall of the valve body, and also includes; A guide portion, which is installed inside the valve cover, is used to keep the movement of the wedge valve plate stable. A sealing part, which is installed inside the valve body, is used for quick disassembly and installation of the seal at the connection between the valve body and the valve cover; The valve body and valve cover are connected by a flange, and the valve cover and bracket are also connected by a flange.

[0005] Furthermore, the guide portion includes a connecting block mounted on the outer wall of the valve stem; and A limiting component is installed inside the valve cover, and the limiting component guides and limits the movement path of the wedge valve plate through the valve stem; The connecting block is connected to the valve stem by welding. The wedge valve plate has a wedge-shaped shape. When viewed from the side, the thickness of the wedge valve plate gradually changes from one end to the other, forming an inclined plane, similar to the shape of a wedge.

[0006] Furthermore, the sealing portion includes a sealing assembly installed inside the valve body, the sealing assembly being used to seal the connection between the valve body and the valve cover; and A positioning component is installed at the bottom of the sealing component, and the positioning component is used to accurately position the installation position of the sealing component; A fixing component is mounted on top of the sealing component, and the fixing component is used to further limit and fix the sealing component; The positioning component and the fixing component both position and fix the sealing component by engaging.

[0007] Furthermore, the limiting component includes several limiting blocks fixedly connected to the outside of the connecting block, and several limiting grooves are opened on the inner wall of the valve cover. The side of several limiting blocks away from the connecting block extends into the corresponding limiting groove and is slidably connected to the corresponding limiting groove. Both the limiting block and the limiting groove are designed in a T-shape.

[0008] Furthermore, the sealing assembly includes a mounting groove formed at the top of the valve body, an mounting ring slidably connected to the inner wall of the mounting groove, and a sealing gasket fixedly connected to the inner wall of the mounting ring. The mounting ring is adapted to the mounting groove, and the sealing gasket is adapted to the inner wall of the mounting ring.

[0009] Furthermore, the positioning component includes a positioning rod fixedly connected to the bottom of the mounting ring, and the inner bottom wall of the mounting groove is provided with a plurality of positioning grooves, and the bottom ends of the plurality of positioning rods extend into the interior of the corresponding positioning groove and are slidably connected to the corresponding positioning groove. There are four positioning slots and four positioning rods, and the four positioning slots and four positioning rods are respectively adapted to each other.

[0010] Furthermore, the fixing assembly includes several fixing rods fixedly connected to the bottom of the valve cover, and the top of the mounting ring is provided with several fixing grooves, and the bottom ends of the several fixing rods extend into the interior of the corresponding fixing grooves and are slidably connected to the corresponding fixing grooves. There are four fixing slots and four fixing rods, and the four fixing slots and four fixing rods are respectively adapted to each other.

[0011] This utility model has the following beneficial effects: 1. By setting a limiting component, specifically during the movement of the wedge valve plate, when the valve stem drives the wedge valve plate to move, the connecting block on the outer wall of the valve stem drives the limiting block to slide in the limiting groove, which plays a guiding and limiting role on the movement path of the valve stem and the wedge valve plate, ensuring that the movement of the wedge valve plate is stable and will not deviate or shake, thereby making the opening and closing process of the valve more reliable.

[0012] 2. By setting a sealing part, specifically when the sealing gasket needs to be disassembled and installed, the valve body and valve cover can be separated and the installation ring can be lifted to remove the sealing gasket; during installation, the positioning rod and positioning groove are used for precise positioning, and the fixing rod and fixing groove are used for further limiting and fixing. Then, the installation ring and sealing gasket are squeezed and fixed through the connection between the valve cover and the valve body, which can realize the quick disassembly and installation of the sealing component, making the sealing gasket easy to maintain, greatly shortening the replacement time of the sealing component, and improving the maintenance efficiency of the sealing gasket.

[0013] 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

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front cross-sectional view of the present invention. Figure 3 This is a schematic diagram of the mounting groove of this utility model; Figure 4 This is a schematic diagram of the structure of the sealing gasket of this utility model; Figure 5 This utility model Figure 2 A magnified structural diagram of A in the middle; Figure 6 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0016] The attached diagram lists the components represented by each number as follows: 1. Valve body; 12. Valve cover; 13. Bracket; 14. Valve seat; 15. Wedge valve plate; 16. Valve stem; 17. Threaded rod; 18. Handwheel; 2. Guide part; 21. Connecting block; 22. Limiting assembly; 221. Limiting block; 222. Limiting groove; 3. Sealing part; 31. Sealing assembly; 311. Mounting groove; 312. Mounting ring; 313. Sealing gasket; 32. Positioning assembly; 321. Positioning rod; 322. Positioning groove; 33. Fixing assembly; 331. Fixing rod; 332. Fixing groove. Detailed Implementation

[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-6 As shown, this utility model is a wedge gate valve, including a valve body 1, a valve cover 12 mounted on the top of the valve body 1, a bracket 13 mounted on the top of the valve cover 12, a valve seat 14 mounted inside the valve body 1, and a wedge valve plate 15 slidably connected to the inner wall of the valve body 1, and also including: Guide part 2 is installed inside the valve cover 12 and is used to keep the movement of the wedge valve plate 15 stable. The sealing part 3 is installed inside the valve body 1 and is used to quickly disassemble and install the seal at the connection between the valve body 1 and the valve cover 12. Among them, the top of the wedge valve plate 15 is fixedly connected to the valve stem 16, the top of the valve stem 16 is rotatably connected to the threaded rod 17, the top of the threaded rod 17 extends to the outside of the bracket 13 and is threadedly connected to the bracket 13, and the top of the threaded rod 17 is fixedly connected to the handwheel 18.

[0019] The guide portion 2 includes a connecting block 21 mounted on the outer wall of the valve stem 16; and Limiting component 22 is installed inside the valve cover 12. The limiting component 22 guides and limits the movement path of the wedge valve plate 15 through the valve stem 16. The connecting block 21 is connected to the valve stem 16 by welding. The wedge valve plate 15 has a wedge-shaped shape. When viewed from the side, the thickness of the wedge valve plate 15 gradually changes from one end to the other, forming an inclined plane, similar to the shape of a wedge.

[0020] The sealing part 3 includes a sealing assembly 31, which is installed inside the valve body 1 and is used to seal the connection between the valve body 1 and the valve cover 12; and Positioning component 32 is installed at the bottom of sealing component 31 and is used to accurately position the sealing component 31. The fixing component 33 is installed on top of the sealing component 31 and is used to further limit and fix the sealing component 31. The positioning component 32 and the fixing component 33 both position and fix the sealing component 31 by engaging.

[0021] The limiting component 22 includes several limiting blocks 221 fixedly connected to the outside of the connecting block 21. Several limiting grooves 222 are opened on the inner wall of the valve cover 12. The side of several limiting blocks 221 away from the connecting block 21 extends into the corresponding limiting groove 222 and is slidably connected to the corresponding limiting groove 222. There are four limit blocks 221 and four limit slots 222, and the limit blocks 221 and the limit slots 222 are mutually compatible.

[0022] The sealing assembly 31 includes a mounting groove 311 formed at the top of the valve body 1, a mounting ring 312 is slidably connected to the inner wall of the mounting groove 311, and a sealing gasket 313 is fixedly connected to the inner wall of the mounting ring 312. Among them, the sealing gasket 313 is annular, and the mounting ring 312 is designed as an annular L-shaped structure.

[0023] The positioning component 32 includes a positioning rod 321 fixedly connected to the bottom of the mounting ring 312. The inner bottom wall of the mounting groove 311 is provided with a plurality of positioning grooves 322. The bottom ends of the plurality of positioning rods 321 extend into the interior of the corresponding positioning groove 322 and are slidably connected to the corresponding positioning groove 322. The positioning slots 322 and positioning rods 321 are each provided with four, and the four positioning slots 322 and the four positioning rods 321 are respectively adapted to each other.

[0024] The fixing component 33 includes several fixing rods 331 fixedly connected to the bottom of the valve cover 12. The top of the mounting ring 312 is provided with several fixing grooves 332. The bottom ends of the several fixing rods 331 extend into the interior of the corresponding fixing grooves 332 and are slidably connected to the corresponding fixing grooves 332. There are four fixing slots 332 and four fixing rods 331, and the four fixing slots 332 and the four fixing rods 331 are respectively adapted to each other.

[0025] A specific application of this embodiment is as follows: When using the device, the operator rotates the handwheel 18, which drives the threaded rod 17 fixedly connected to it to rotate. Since the threaded rod 17 is threadedly connected to the bracket 13, according to the principle of threaded transmission, the threaded rod 17 will move axially while rotating. The axial movement of the threaded rod 17 is transmitted to the valve rod 16 through the rotational connection with the valve rod 16. The valve rod 16 drives the wedge valve plate 15 fixedly connected to it to slide up and down on the inner wall of the valve body 1. When the wedge valve plate 15 rises, the valve opens, and the medium can flow in the valve body 1. When the wedge valve plate 15 descends, the valve closes, cutting off the flow of the medium. During the movement of the wedge valve plate 15 driven by the valve stem 16, the valve stem 16 also drives the connecting block 21 to move. This, in turn, causes the limiting block 221 to slide within the limiting groove 222. The sliding fit between the limiting block 221 and the limiting groove 222 guides and limits the movement of the valve stem 16 and the wedge valve plate 15, ensuring that the wedge valve plate 15 does not shift or wobble during movement. Simultaneously, the sealing gasket 313 seals the space between the valve body 1 and the valve cover 12. The connection is sealed to achieve a sealing function, preventing media leakage and the ingress of external dust. When the sealing gasket 313 needs to be replaced, after disassembling the valve body 1 and valve cover 12, simply lift the mounting ring 312 upwards to remove the sealing gasket 313 for replacement and maintenance. When the sealing gasket 313 needs to be installed, first place the mounting ring 312 with the sealing gasket 313 installed in it into the mounting groove 311, and simultaneously insert the positioning rod 321 at the bottom of the mounting ring 312 into the corresponding positioning groove 3. In step 22, the installation position of the mounting ring 312 is precisely positioned, and then the valve cover 12 is installed on the valve body 1, so that the fixing rod 331 at the bottom of the valve cover 12 is inserted into the fixing groove 332 on the mounting ring 312. Since the valve body 1 and the valve cover 12 are connected by flange bolts, as the bolts are tightened, the valve body 1 and the valve cover 12 gradually become more closely connected. As the bolts rotate, the positioning rod 321 at the bottom of the valve cover 12 and the valve cover 12 itself will gradually squeeze the mounting ring 312 and the sealing gasket 313, thereby completing the installation of the sealing gasket 313.

[0026] 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.

[0027] 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 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 this 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 wedge gate valve, comprising a valve body, a valve cover mounted on the top of the valve body, a bracket mounted on the top of the valve cover, a valve seat mounted inside the valve body, and a wedge valve plate slidably connected to the inner wall of the valve body, characterized in that, Also includes: A guide portion, which is installed inside the valve cover, is used to keep the movement of the wedge valve plate stable. A sealing part, which is installed inside the valve body, is used for quick disassembly and installation of the seal at the connection between the valve body and the valve cover; The top of the wedge valve plate is fixedly connected to a valve stem, the top of the valve stem is rotatably connected to a threaded rod, the top of the threaded rod extends to the outside of the bracket and is threadedly connected to the bracket, and the top of the threaded rod is fixedly connected to a handwheel. The sealing portion includes a sealing assembly installed inside the valve body, the sealing assembly being used to seal the connection between the valve body and the valve cover; and A positioning component is installed at the bottom of the sealing component, and the positioning component is used to accurately position the installation position of the sealing component; A fixing component is mounted on top of the sealing component, and the fixing component is used to further limit and fix the sealing component; Both the positioning component and the fixing component position and fix the sealing component by means of a snap-fit ​​mechanism; The sealing assembly includes a mounting groove formed at the top of the valve body, an mounting ring slidably connected to the inner wall of the mounting groove, and a sealing gasket fixedly connected to the inner wall of the mounting ring. The sealing gasket is annular, and the mounting ring is designed as an L-shaped annular structure. The positioning component includes a positioning rod fixedly connected to the bottom of the mounting ring. The inner bottom wall of the mounting groove is provided with a plurality of positioning grooves. The bottom ends of the plurality of positioning rods extend into the interior of the corresponding positioning groove and are slidably connected to the corresponding positioning groove. There are four positioning slots and four positioning rods, and the four positioning slots and four positioning rods are respectively adapted to each other; The fixing assembly includes several fixing rods fixedly connected to the bottom of the valve cover. The top of the mounting ring is provided with several fixing grooves. The bottom ends of the fixing rods extend into the corresponding fixing grooves and are slidably connected to the corresponding fixing grooves. There are four fixing slots and four fixing rods, and the four fixing slots and four fixing rods are respectively adapted to each other.

2. A wedge gate valve according to claim 1, characterized in that, The guide portion includes a connecting block mounted on the outer wall of the valve stem; and A limiting component is installed inside the valve cover, and the limiting component guides and limits the movement path of the wedge valve plate through the valve stem; The connecting block is connected to the valve stem by welding. The wedge valve plate has a wedge-shaped shape. When viewed from the side, the thickness of the wedge valve plate gradually changes from one end to the other, forming an inclined plane, similar to the shape of a wedge.

3. A wedge gate valve according to claim 2, characterized in that, The limiting component includes several limiting blocks fixedly connected to the outside of the connecting block, and several limiting grooves are opened on the inner wall of the valve cover. The side of several limiting blocks away from the connecting block extends into the corresponding limiting groove and is slidably connected to the corresponding limiting groove. There are four limit blocks and four limit slots, and the limit blocks and limit slots are mutually compatible.

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