Valve seat structure of large-diameter low-vacuum butterfly valve

Abstract

The utility model belongs to the technical field of butterfly valves, and discloses a large-caliber low-vacuum butterfly valve seat structure which comprises a valve seat body and a pipeline, a mounting frame is arranged on one side of the valve seat body, a mounting plate is fixedly connected to one end of the pipeline, a mounting groove is formed in one side of the mounting plate, and the outer wall of the mounting frame is slidably sleeved with a pull plate; and one end of the pulling plate is fixedly connected with a sliding rod. The valve seat body, the mounting frame, the pipeline, the mounting plate, the mounting blocks, the sliding rods and the pulling plate are arranged, when one end of each sliding rod does not extrude a limiting block any more, the limiting block can move towards the interior of a groove through the elastic force of a first spring, so that the mounting plate is not limited any more, the multiple mounting blocks and the multiple sliding rods are arranged, and the multiple sliding rods are fixedly connected with the pulling plate; according to the pipeline dismounting device, the bolts are arranged on the sliding rods, the sliding rods can be pulled together by pulling the pulling plate, the pipeline can be dismounted, the bolts do not need to be rotated one by one when the pipeline is dismounted, and great convenience is brought to workers.

Description

Technical Field

[0001] The present application relates to the technical field of butterfly valves, and more specifically, to a valve seat structure of a large-diameter low-vacuum butterfly valve. Background Art

[0002] A butterfly valve is a regulating valve. A large-diameter low-vacuum butterfly valve refers to a valve with a diameter greater than one hundred centimeters, which is widely used in the petroleum, chemical, power station, and comprehensive industries. The butterfly valve can be used to control the flow of various types of fluids and mainly functions as a cut-off and throttling device on pipelines. Most butterfly valves are composed of structures such as valve seats, flanges, sealing mechanisms, and control disks.

[0003] However, at present, most of the existing valve seat structures on the market are connected to the pipeline by flanges and several bolts. Therefore, when disassembling and assembling the valve seat, it is necessary to rotate several bolts one by one, which brings great trouble to the staff, is time-consuming and laborious, and reduces the efficiency of the disassembly and assembly work. Summary of the Utility Model

[0004] In order to solve the above problems, the present application provides a valve seat structure of a large-diameter low-vacuum butterfly valve.

[0005] The valve seat structure of a large-diameter low-vacuum butterfly valve provided by the present application adopts the following technical solutions:

[0006] A valve seat structure of a large-diameter low-vacuum butterfly valve includes a valve seat body and a pipeline. An installation frame is provided on one side of the valve seat body. One end of the pipeline is fixedly connected with an installation plate. An installation groove is opened on one side of the installation plate. A pull plate is slidably sleeved on the outer wall of the installation frame, and one end of the pull plate is fixedly connected with a sliding rod.

[0007] One end of the pull plate is fixedly connected with a second spring. An installation block is fixedly connected to the outer wall of the installation frame. A groove is opened on one side of the installation block. A through groove is opened on the inner side wall of the groove. A first spring is fixedly connected to the inner wall of the groove. One end of the first spring is fixedly connected with a moving plate, and one end of the moving plate is fixedly connected with a limiting block.

[0008] Furthermore, a base is fixedly connected to the outer wall of the valve seat body, and a control handle is provided on the outer wall of the valve seat body.

[0009] Through the above technical solution, adjusting the control handle can enable the valve seat body to perform cut-off and throttling.

[0010] Furthermore, the second spring is slidably sleeved on the sliding rod, and one end of the second spring is fixedly connected to one side of the installation frame.

[0011] Through the above technical solution, after the pull plate changes its position and is not under force, it will be reset by the elastic force of the second spring.

[0012] Furthermore, the outer wall of the moving plate is slidably connected to the inner wall of the groove, and the limiting block is slidably sleeved in the through groove.

[0013] Through the above technical solution, the limiting block can move into the inside of the knife groove.

[0014] Furthermore, one end of the sliding rod extends into the inside of the groove, and one end of the sliding rod is slidably connected to one side of the limiting block.

[0015] Through the above technical solution, one end of the sliding rod presses the limiting block, so that the limiting block extends out of the outside of the groove.

[0016] Furthermore, one side of the limiting block is an inclined surface, and the mounting block is slidably sleeved in the mounting groove.

[0017] Through the above technical solution, when the inclined surface of the limiting block is squeezed, it will move outward of the limiting block.

[0018] In summary, the present application includes at least the following beneficial technical effects:

[0019] (1) By providing the valve seat body, mounting frame, pipeline, mounting plate, mounting block, sliding rod and pulling plate, when one end of the sliding rod no longer presses the limiting block, the limiting block will move into the inside of the groove under the elastic force of the first spring, so that the mounting plate is no longer limited. Since the number of the mounting blocks and the sliding rods is multiple, and multiple sliding rods are fixedly connected to the pulling plate, pulling the pulling plate can pull multiple sliding rods together, so that the pipeline can be disassembled. Furthermore, when disassembling the pipeline, it is not necessary to rotate several bolts one by one, which brings great convenience to the staff, saves time and effort, and effectively improves the efficiency of the disassembly and assembly work.

[0020] (2) By providing the first spring, limiting block, sliding rod, pulling plate and second spring, when installing the pipeline, pull the pulling plate to penetrate multiple mounting blocks through multiple mounting grooves, release the pulling plate, and the elastic force of the second spring drives the sliding rod to press the inclined surface of the limiting block, and the limiting block will extend out of the groove to realize the limitation of the mounting plate, and then the pipeline can be installed on the valve seat body, further meeting the use requirements of the device, and thus worthy of promotion. Description of the Drawings

[0021] Figure 1 It is a structural schematic diagram of a large-diameter low-vacuum butterfly valve seat structure;

[0022] Figure 2 It is a front sectional view of the mounting plate in the present application;

[0023] Figure 3 It is Figure 2 The enlarged view of the structure at A in

[0024] Figure 4 This is the front sectional view of the mounting block in this application.

[0025] Description of the reference numerals in the figure:

[0026] 1. Valve seat body; 2. Control handle; 3. Mounting frame; 4. Pipeline; 5. Mounting plate; 6. Mounting groove; 7. Mounting block; 8. Groove; 9. First spring; 10. Moving plate; 11. Limiting block; 12. Through groove; 13. Slide bar; 14. Pulling plate; 15. Second spring; 16. Base. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] The following is a further detailed description of the present application in conjunction with the attached Figures 1-4 Drawings.

[0031] The embodiment of the present application discloses a valve seat structure of a large-diameter low-vacuum butterfly valve. Please refer to Figures 1-4 , which includes a valve seat body 1 and a pipeline 4. One side of the valve seat body 1 is provided with a mounting frame 3. One end of the pipeline 4 is fixedly connected with a mounting plate 5. One side of the mounting plate 5 is provided with a mounting groove 6. The outer wall of the mounting frame 3 is slidably sleeved with a pulling plate 14, and one end of the pulling plate 14 is fixedly connected with a slide bar 13.

[0032] One end of the pull plate 14 is fixedly connected with a second spring 15. The elastic force of the second spring 15 is relatively large. An installation block 7 is fixedly connected to the outer wall of the installation frame 3. A groove 8 is formed on one side of the installation block 7. A through groove 12 is formed on the inner side wall of the groove 8. A first spring 9 is fixedly connected to the inner wall of the groove 8. The first spring 9 is in a compressed state. One end of the first spring 9 is fixedly connected with a moving plate 10. One end of the moving plate 10 is fixedly connected with a limiting block 11. When one end of the sliding rod 13 no longer presses against the limiting block 11, the limiting block 11 will move into the groove 8 under the elastic force of the first spring 9, so that the installation plate 5 is no longer limited. Since the number of the installation blocks 7 and the sliding rods 13 is multiple, and the multiple sliding rods 13 are all fixedly connected with the pull plate 14, pulling the pull plate 14 can pull the multiple sliding rods 13 together, so that the pipeline 4 can be disassembled. Furthermore, when disassembling the pipeline 4, it is not necessary to rotate a plurality of bolts one by one, which brings great convenience to the staff, saves time and effort, and effectively improves the efficiency of the disassembly and assembly work.

[0033] In this embodiment, a base 16 is fixedly connected to the outer wall of the valve seat body 1, and a control handle 2 is arranged on the outer wall of the valve seat body 1. The base 16 can support the valve seat body 1. Adjusting the control handle 2 can realize the cutting off and throttling of the valve seat body 1.

[0034] In this embodiment, the second spring 15 is slidably sleeved on the sliding rod 13, and one end of the second spring 15 is fixedly connected to one side of the installation frame 3. After the pull plate 14 changes its position and is not under force, it will be reset under the elastic force of the second spring 15.

[0035] In this embodiment, the outer wall of the moving plate 10 is slidably connected to the inner wall of the groove 8, and the limiting block 11 is slidably sleeved in the through groove 12. The limiting block 11 can move into the groove 8.

[0036] In this embodiment, one end of the sliding rod 13 extends into the groove 8, and one end of the sliding rod 13 is slidably connected to one side of the limiting block 11. One end of the sliding rod 13 presses against the limiting block 11, so that the limiting block 11 extends out of the groove 8.

[0037] In this embodiment, one side of the limiting block 11 is an inclined surface, and the installation block 7 is slidably sleeved in the installation groove 6. When the inclined surface of the limiting block 11 is pressed, it will move outwards of the limiting block 11.

[0038] The implementation principle of the valve seat structure of a large-diameter low-vacuum butterfly valve in an embodiment of the present application is as follows: When it is necessary to disassemble the pipeline 4, the pull plate 14 is pulled, and then the sliding rod 13 can be pulled. One end of the sliding rod 13 no longer presses against the inclined surface of the limiting block 11. Since the first spring 9 is in a compressed state, when the limiting block 11 is not pressed, it will move into the groove 8 through the elastic force of the first spring 9. Then the limiting block 11 no longer limits the mounting plate 5. The number of the mounting blocks 7 and the sliding rods 13 is multiple, and one end of each of the multiple sliding rods 13 is fixedly connected to one side of the pull plate 14. Therefore, pulling the pull plate 14 can pull the multiple sliding rods 13 together, so that the multiple limiting blocks 11 no longer limit the mounting plate 5, and then the pipeline 4 can be disassembled.

[0039] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A large-caliber low-vacuum butterfly valve seat structure, comprising a valve seat body (1) and a pipeline (4), characterized in that: A mounting frame (3) is provided on one side of the valve seat body (1); a mounting plate (5) is fixedly connected to one end of the pipe (4); a mounting groove (6) is provided on one side of the mounting plate (5); a pull plate (14) is slidably sleeved on the outer wall of the mounting frame (3); and a sliding rod (13) is fixedly connected to one end of the pull plate (14); One end of the pulling plate (14) is fixedly connected to a second spring (15); the outer wall of the mounting frame (3) is fixedly connected to a mounting block (7); a groove (8) is provided on one side of the mounting block (7); a through groove (12) is provided on the inner wall of the groove (8); a first spring (9) is fixedly connected to the inner wall of the groove (8); one end of the first spring (9) is fixedly connected to a moving plate (10); and one end of the moving plate (10) is fixedly connected to a limiting block (11).

2. A large-caliber low-vacuum butterfly valve seat structure according to claim 1, characterized in that: The outer wall of the valve seat body (1) is fixedly connected to a base (16), and the outer wall of the valve seat body (1) is provided with a control handle (2).

3. The large-caliber low-vacuum butterfly valve seat structure according to claim 1 is characterized by: The second spring (15) is slidably sleeved with the slide rod (13), and one end of the second spring (15) is fixedly connected to one side of the mounting frame (3).

4. The large-caliber low-vacuum butterfly valve seat structure according to claim 1 is characterized in that: The outer wall of the movable plate (10) is slidably connected to the inner wall of the groove (8), and the limit block (11) is slidably sleeved to the through groove (12).

5. The large-caliber low-vacuum butterfly valve seat structure according to claim 1 is characterized by: One end of the sliding rod (13) extends to the inside of the groove (8), and one end of the sliding rod (13) is slidably connected to one side of the limiting block (11).

6. The large-caliber low-vacuum butterfly valve seat structure according to claim 1 is characterized by: One side of the limit block (11) is an inclined surface, and the mounting block (7) is slidably sleeved with the mounting groove (6).

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