A gate valve capable of installing a variable diameter pipeline

Abstract

The application relates to a gate valve capable of being installed in a variable-diameter pipeline and relates to the technical field of gate valves. The gate valve comprises a valve body, both ends of the valve body are provided with mounting flanges, connecting sleeves are arranged at the ends of the mounting flanges, the connecting sleeves comprise matched flanges, mounting barrels and bevel ring blocks, the matched flanges are connected with the mounting flanges, the mounting barrels are arranged on the side of the matched flanges away from the mounting flanges, the bevel ring blocks are arranged in the mounting barrels, the inner diameter of the bevel ring blocks gradually decreases from the direction close to the valve body to the direction away from the valve body, and a plurality of threaded mounting holes are arranged on the side of the bevel ring blocks away from the matched flanges. The application has the effect of enabling the gate valve to be installed in the pipeline with reduced inner diameter, thereby improving the universality of the gate valve.

Description

Technical Field

[0001] This application relates to the field of gate valve technology, and in particular to a gate valve that can be installed in variable diameter pipelines. Background Technology

[0002] Gate valves are a common type of shut-off valve that controls the flow of fluid by opening and closing a gate. They are widely used in petroleum, chemical, water treatment, power, and construction industries.

[0003] A gate valve is designed in the related technology, including a valve body, with mounting flanges at both ends of the valve body, a valve seat on the surface of the valve body, a valve stem rotatably connected to the valve seat, one end of the valve stem being inserted into the valve body, a valve plate rotatably connected to the valve body, and the valve plate being connected to the valve stem.

[0004] Regarding the aforementioned patents, the inventors discovered that the gate valves in the prior art can only be installed in pipelines with the same inner diameter as the valve body. When the inner diameter of the pipeline to be connected is significantly reduced, the two are not easy to install. Furthermore, the sudden change in the inner diameter at the connection between the valve body and the connecting pipeline can easily lead to internal fluid turbulence, posing certain safety hazards. Therefore, improvements are needed. Utility Model Content

[0005] In order to enable the gate valve to be installed in pipelines with reduced inner diameter and to improve the versatility of the gate valve, this application provides a gate valve that can be installed in pipelines with varying diameters.

[0006] The gate valve provided in this application, which can be installed in variable diameter pipelines, adopts the following technical solution: A gate valve capable of being installed in a variable diameter pipeline includes a valve body with mounting flanges at both ends. It also includes a connecting assembly located at the ends of the mounting flanges on both sides. The connecting assembly includes a mating flange, a mounting cylinder, and a beveled ring block. The mating flange is connected to the mounting flange. The mounting cylinder is located on the side of the mating flange away from the mounting flange. The beveled ring block is located inside the mounting cylinder. The inner diameter of the beveled ring block gradually decreases from the direction closest to the valve body to the direction furthest from the valve body. The side of the beveled ring block furthest from the mating flange has several threaded mounting holes.

[0007] By adopting the above technical solution and setting up the connection kit, it is possible to select an appropriate size of inclined ring block based on the pipes to be connected with different inner diameters. Under the action of the shape and structure of the inclined ring block, a smooth transition of fluid from the valve body to the pipe can be achieved, reducing the probability of turbulence and improving the stability and safety of the pipe.

[0008] Preferably, the inner wall of the mounting cylinder is provided with an internal thread, and the outer wall of the inclined ring block is provided with an external thread. The mounting cylinder and the inclined ring block are detachably connected by the internal and external threads.

[0009] By adopting the above technical solution, the inclined ring block and the mounting cylinder are made to be detachably connected, which makes it convenient to replace the inclined ring block with a suitable inner diameter based on the inner diameter of the connected pipeline, thereby improving the compatibility and assembly convenience of the connection kit and the gate valve of this application.

[0010] Preferably, a sealing nozzle is provided inside the inclined ring block. The sealing nozzle includes a funnel portion and a first straight cylindrical portion. The funnel portion is disposed inside the inclined ring block, and the first straight cylindrical portion is connected to the end of the funnel portion with a smaller diameter. The end of the first straight cylindrical portion away from the funnel portion extends out of the inclined ring block.

[0011] By adopting the above technical solution, the sealing connection can effectively ensure the seal between the kit and the connected pipe, thereby reducing the probability of fluid leakage.

[0012] Preferably, the outer wall of the funnel portion is provided with a plurality of positioning posts, and the inner wall of the inclined annular block is provided with a plurality of positioning holes for the positioning posts to abut against.

[0013] By adopting the above technical solution, the positioning column can prevent the sealing pipe from rotating relative to the inclined ring block, thereby reducing the wear caused by the rotation between the two, maintaining the sealing performance between the sealing pipe and the inclined ring block, and reducing the probability of fluid leakage.

[0014] Preferably, a first guide surface is provided on the inner wall of the end of the first straight cylindrical portion away from the funnel portion.

[0015] By adopting the above technical solution, opening the first guide surface can improve the smoothness of fluid flow between the connected pipeline and the connecting kit.

[0016] Preferably, a second straight section is provided at one end of the funnel section near the valve body, and the second straight section is inserted into the mounting flange.

[0017] By adopting the above technical solution, the second straight section can improve the sealing between the valve body and the connecting kit, and reduce the probability of fluid leakage.

[0018] Preferably, a second guide surface is provided on the inner wall of the end of the second straight section away from the funnel section.

[0019] By adopting the above technical solution, the opening of a second flow guide surface can improve the smoothness of fluid flow between the valve body and the connecting kit.

[0020] Preferably, the outer wall of the mounting cylinder is provided with a plurality of locking members, which pass through the mounting cylinder and are connected to the inclined ring block.

[0021] By adopting the above technical solution, the locking component can fix the inclined ring block to prevent the inclined ring block from rotating radially relative to the mounting cylinder, thereby ensuring the stability and safety of the connected pipeline.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The connection kit allows for the selection of appropriately sized inclined ring blocks based on the different inner diameters of the pipes to be connected. Under the action of the shape and structure of the inclined ring blocks, a smooth transition of fluid from the valve body to the pipe can be achieved, reducing the probability of turbulence and improving the stability and safety of the pipe. 2. The inclined ring block and the mounting cylinder are designed to be detachably connected, which makes it easy to replace the inclined ring block with a suitable inner diameter based on the inner diameter of the connected pipeline, thereby improving the compatibility and assembly convenience of the connection kit and the gate valve of this application. 3. The sealing connector provided in this application can effectively ensure the seal between the kit and the connected pipe, thereby reducing the probability of fluid leakage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a gate valve that can be installed in a variable diameter pipeline, according to an embodiment of this application.

[0024] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0025] Explanation of reference numerals in the attached drawings: 1. Gate valve; 11. Valve body; 12. Mounting flange; 2. Connecting kit; 21. Matching flange; 22. Mounting cylinder; 23. Inclined ring block; 231. Threaded mounting hole; 232. Positioning hole; 3. Sealing pipe; 31. Funnel section; 311. Positioning pin; 32. First straight cylinder section; 321. First guide surface; 33. Second straight cylinder section; 331. Second guide surface; 4. Locking element. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0027] This application discloses a gate valve that can be installed in variable diameter pipelines. (Refer to...) Figure 1 It includes a valve body 11, with mounting flanges 12 at both ends of the valve body 11, and a connection kit 2 for connecting to a reducing pipeline is also provided on one side of the mounting flange 12.

[0028] Reference Figure 1 and Figure 2The connecting kit 2 includes a mating flange 21, a mounting cylinder 22, and a beveled ring block 23. The mating flange 21 abuts against the mounting flange 12 for connection to the valve body 11. The mounting cylinder 22 is welded to the side of the mating flange 21 away from the mounting flange 12. The inner wall of the mounting cylinder 22 has internal threads. The beveled ring block 23 is disposed inside the mounting cylinder 22, and its outer wall has external threads. The mounting cylinder 22 and the beveled ring block 23 are detachably connected through the internal and external threads. In this embodiment, the inner diameter of the beveled ring block 23 is... The inclined ring block 23 of appropriate size is selected for installation based on the inner diameter of the pipeline to be connected, gradually decreasing in size from the side closer to the valve body 11 to the side farther away from the valve body 11. The outer wall of the mounting cylinder 22 is provided with several locking parts 4, which are bolts. The locking parts 4 pass through the mounting cylinder 22 and are connected to the inclined ring block 23 to ensure the stability of the inclined ring block 23 in the radial direction, thereby ensuring the stability of the connected pipeline. The end wall of the inclined ring block 23 away from the valve body 11 is provided with several threaded mounting holes 231 for fixing to the flange of the pipeline to be connected.

[0029] Reference Figure 1 and Figure 2 A sealing pipe 3 is provided inside the inclined ring block 23. The sealing pipe 3 includes a funnel part 31 and a first straight cylinder part 32 and a second straight cylinder part 33 respectively provided at both ends of the funnel part 31. The funnel part 31 is provided on the inner wall of the inclined ring block 23 and abuts against the inner wall of the inclined ring block 23. A plurality of positioning pins 311 are provided on the outer wall of the funnel part 31. The inner wall of the inclined ring block 23 is provided with positioning holes 232 for the positioning pins 311 to be inserted, so as to maintain the relative stability of the inclined ring block 23 and the sealing pipe 3 and prevent relative rotation between the two.

[0030] Reference Figure 1 and Figure 2 The first cylindrical section 32 is integrally formed at the end of the funnel section 31 with a smaller inner diameter, and extends out of the inclined ring block 23 and is inserted into the inside of the flange of the pipeline to be connected. The inner wall of the end of the first cylindrical section 32 away from the funnel section 31 is provided with a first guide surface 321 to achieve a smooth transition of the fluid. The second cylindrical section 33 is integrally formed at the end of the funnel section 31 with a larger inner diameter, and extends out of the inclined ring block 23 and is inserted into the inside of the mounting flange 12. The inner wall of the end of the second cylindrical section 33 away from the funnel section 31 is provided with a second guide surface 331 to achieve a smooth transition of the fluid.

[0031] The implementation principle of a gate valve that can be installed in a variable diameter pipeline according to an embodiment of this application is as follows: This application provides a connecting kit 2, which can select an appropriate size of inclined ring block 23 based on the pipeline to be connected with different inner diameters. Under the action of the shape and structure of the inclined ring block 23, the fluid can be smoothly transitioned from the valve body 11 to the pipeline, reducing the probability of turbulence and improving the stability and safety of the pipeline.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gate valve capable of being installed in a variable diameter pipeline, comprising a valve body, wherein mounting flanges are provided at both ends of the valve body, characterized in that: It also includes a connecting kit disposed at the ends of the mounting flanges on both sides. The connecting kit includes a mating flange, a mounting cylinder and an inclined ring block. The mating flange is connected to the mounting flange. The mounting cylinder is disposed on the side of the mating flange away from the mounting flange. The inclined ring block is disposed inside the mounting cylinder. The inner diameter of the inclined ring block gradually decreases from the direction close to the valve body to the direction away from the valve body. The side of the inclined ring block away from the mating flange has several threaded mounting holes.

2. A gate valve capable of being installed in a variable diameter pipeline according to claim 1, characterized in that: The inner wall of the mounting cylinder is provided with internal threads, and the outer wall of the inclined ring block is provided with external threads. The mounting cylinder and the inclined ring block are detachably connected through internal and external threads.

3. A gate valve capable of being installed in a variable diameter pipeline according to claim 1, characterized in that: The inclined ring block is provided with a sealing pipe, which includes a funnel part and a first straight cylinder part. The funnel part is located inside the inclined ring block, and the first straight cylinder part is connected to the end of the funnel part with a smaller diameter. The end of the first straight cylinder part away from the funnel part extends out of the inclined ring block.

4. A gate valve capable of being installed in a variable diameter pipeline according to claim 3, characterized in that: The outer wall of the funnel section is provided with several positioning posts, and the inner wall of the inclined ring block is provided with several positioning holes for the positioning posts to abut.

5. A gate valve capable of being installed in a variable diameter pipeline according to claim 3, characterized in that: A first guide surface is provided on the inner wall of the end of the first straight section away from the funnel section.

6. A gate valve capable of being installed in a variable diameter pipeline according to claim 3, characterized in that: The funnel section is provided with a second straight section at one end near the valve body, and the second straight section is inserted into the mounting flange.

7. A gate valve capable of being installed in a variable diameter pipeline according to claim 6, characterized in that: A second guide surface is provided on the inner wall of the end of the second straight section away from the funnel section.

8. A gate valve capable of being installed in a variable diameter pipeline according to claim 1, characterized in that: The outer wall of the mounting cylinder is provided with several locking components, which pass through the mounting cylinder and are connected to the inclined ring block.

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