Butterfly valve with valve element convenient to replace

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with a valve core convenient to replace, which comprises a shell, a controller and a limit component, the controller is fixedly connected with the upper surface of the shell, a rotating shaft is bolted on the inner wall of the controller and rotatably connected with the inner wall of the shell, a valve plate is mounted on the surface of the rotating shaft, and the limit component is arranged on the surface of the rotating shaft. The limiting assembly comprises two assembling frames, the assembling frames are fixedly connected with the surface of the rotating shaft, positioning pins are slidably connected to the inner walls of the assembling frames, connecting frames are fixedly connected to the side surfaces of the positioning pins, connecting rods are hinged to the inner walls of the connecting frames, positioning grooves are formed in the side surfaces of the valve plates, and the number of the assembling frames is two. According to the butterfly valve, the limiting assembly and the linkage assembly are arranged, maintenance personnel can conveniently disassemble and replace the valve element of the butterfly valve, then the problems that disassembly operation of the butterfly valve is tedious, time-consuming and labor-consuming are solved, and convenience and efficiency of replacement of the valve element of the butterfly valve are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve which is convenient for replacing a valve core. Background Art

[0002] A butterfly valve is a valve used to control pipelines. It usually uses a disc as the valve core to achieve the purpose of starting, closing or adjusting. The valve core is the functional part of the butterfly valve to control direction, flow rate, or pressure.

[0003] The prior art includes a utility model with publication number CN218625456U, which discloses a butterfly valve that is easy to replace the valve core. The patent adopts a base and a fixing component. The base includes a main valve body and a lever, a valve stem is arranged inside the main valve body, placement grooves are arranged on both sides of the valve stem, a slot is arranged at the bottom of the placement groove, the lever is fixed to one end of the valve stem, and the fixing component includes a partition and a valve plate, a placement block is arranged on one side of the partition, and an insert block is arranged on one side of the placement block. The operator installs the partition on the valve stem through the placement block, and connects the insert block and the slot. After the partitions on both sides of the valve stem are installed accordingly, the operator connects and installs the valve plate through the first positioning hole and the second positioning hole arranged on both sides of the partition, so that the valve plate blocks the external liquid medium, and at the same time, it can avoid the external liquid medium from being retained in the installation area, improve the use effect of the butterfly valve, and solve the problem that in the existing butterfly valve structure that is easy to replace, the replacement component lacks a shielding structure on the outside. When liquid passes through, the liquid will contact the replacement component, thereby corroding the component and affecting the use of the butterfly valve.

[0004] The inventor discovered in his daily work that in the use of butterfly valves, the valve cores of existing butterfly valves mostly adopt an integrated design and are mostly installed inside the valve body. Since the valve core will wear during use, when the valve core is severely worn and needs to be disassembled, it takes a long time and cumbersome operations to disassemble and replace the valve core, resulting in low efficiency in replacing the butterfly valve core. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the valve core is severely worn, and when it needs to be disassembled, it takes a long time and cumbersome operations to disassemble and replace the valve core, resulting in low efficiency in replacing the butterfly valve core. A butterfly valve that is easy to replace the valve core is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a butterfly valve which is easy to replace the valve core, comprising a shell, a controller and a limiting component, wherein the controller is fixedly connected to the upper surface of the shell, the inner wall of the controller is bolted with a rotating shaft, the rotating shaft is rotatably connected to the inner wall of the shell, a valve plate is installed on the surface of the rotating shaft, the limiting component is arranged on the surface of the rotating shaft, the limiting component comprises an assembly frame, the assembly frame is fixedly connected to the surface of the rotating shaft, a positioning pin is slidably connected to the inner wall of the assembly frame, and a connecting frame is fixedly connected to the side surface of the positioning pin.

[0007] Preferably, a connecting rod is hinged on the inner wall of the connecting frame, a positioning groove is opened on the side surface of the valve plate, and a connecting frame is provided, through which the position of the connecting rod can be constrained to achieve a linkage effect of the connecting rod.

[0008] Preferably, there are two assembly frames, which are symmetrically arranged about the rotating shaft in the upper and lower directions, the positioning pin passes through the side surface of the assembly frame, the connecting frame is slidably connected to the side surface of the assembly frame, and the positioning pin is provided. By means of the positioning pin, the valve plate can be restricted on the rotating shaft in a restricted state.

[0009] Preferably, the number of the connecting rods is two, and the two connecting rods are symmetrically arranged about the assembly frame, the assembly frame abuts against the inner wall of the positioning groove, and the connecting frame is plugged into the inner wall of the positioning groove. The assembly frame is set, and the moving direction of the positioning pin can be guided by the assembly frame to increase the stability of the positioning pin during movement.

[0010] Preferably, a linkage component is provided on the surface of the connecting rod, and the linkage component includes a fixing plate, the fixing plate is hinged to the side surface of the connecting rod, the side surface of the fixing plate is fixedly connected with a pull rod, the side surface of the pull rod is fixedly connected with a T-shaped threaded tube, a circular hole is opened on the side surface of the pull rod, and a threaded bolt is provided on the inner wall of the circular hole of the pull rod, and a fixing plate is provided, and the connecting rod and the pull rod can be connected by the fixing plate, thereby realizing the linkage effect of the pull rod and the connecting rod.

[0011] Preferably, the pull rod is in contact with the surface of the assembly frame, the T-shaped threaded barrel is in contact with the surface of the rotating shaft, the threaded bolt is threadedly connected to the inner wall of the T-shaped threaded barrel, a threaded groove is provided on the surface of the rotating shaft, the threaded bolt is threadedly connected to the inner wall of the threaded groove, and a T-shaped threaded barrel is provided, and the position of the threaded bolt can be constrained by the T-shaped threaded barrel to achieve the limiting effect of the threaded bolt.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] In the utility model, by setting a limiting component and a linkage component, when the valve plate needs to be replaced, the threaded bolt is rotated counterclockwise, and the threaded bolt disengages from the threaded groove during the rotation and loses the restriction on the pull rod, and the pull rod is pulled. The pull rod is forced to pull the fixed plate, and the fixed plate pulls the connecting rod under the action of the pull rod. The connecting rod is forced to pull the positioning pin, and the positioning pin is pulled and displaced out of the positioning groove and loses the restriction on the valve plate. When the valve plate loses the restriction, the valve plate can be disassembled and replaced. By setting a limiting component and a linkage component, it is convenient for maintenance personnel to disassemble and replace the butterfly valve core, thereby reducing the cumbersome, time-consuming and labor-intensive disassembly operation of the butterfly valve, and further improving the convenience and efficiency of replacing the butterfly valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a butterfly valve that is easy to replace the valve core;

[0015] Figure 2 The utility model provides a bottom-up structural schematic diagram of a butterfly valve that is convenient for replacing the valve core;

[0016] Figure 3 The utility model provides a partial structural schematic diagram of a butterfly valve that is easy to replace the valve core;

[0017] Figure 4 The utility model proposes a butterfly valve which is convenient for replacing the valve core. Figure 3 Schematic diagram of the structure at point A in the middle.

[0018] Legend:

[0019] 1. Housing; 2. Controller; 3. Rotating shaft; 4. Valve plate; 5. Limiting assembly; 51. Assembly frame; 52. Positioning pin; 53. Connecting frame; 54. Connecting rod; 55. Positioning groove; 6. Linkage assembly; 61. Fixing plate; 62. Pull rod; 63. T-shaped threaded barrel; 64. Threaded bolt. DETAILED DESCRIPTION

[0020] See also Figure 1-4 The utility model provides a technical solution: a butterfly valve that is easy to replace the valve core, including a shell 1, a controller 2 and a limiting component 5, the controller 2 is fixedly connected to the upper surface of the shell 1, the inner wall of the controller 2 is bolted with a rotating shaft 3, the rotating shaft 3 is rotatably connected to the inner wall of the shell 1, a valve plate 4 is installed on the surface of the rotating shaft 3, the limiting component 5 is arranged on the surface of the rotating shaft 3, and a linkage component 6 is arranged on the surface of the connecting rod 54.

[0021] The specific settings and functions of the limiting component 5 and the linkage component 6 are described in detail below.

[0022] In this embodiment: the limiting component 5 includes an assembly frame 51, which is fixedly connected to the surface of the rotating shaft 3, and the inner wall of the assembly frame 51 is slidably connected to a positioning pin 52, and the side surface of the positioning pin 52 is fixedly connected to a connecting frame 53.

[0023] Specifically, a connecting rod 54 is hinged on the inner wall of the connecting frame 53 , a positioning groove 55 is provided on the side surface of the valve plate 4 , and the connecting frame 53 is provided to constrain the position of the connecting rod 54 to achieve a linkage effect of the connecting rod 54 .

[0024] Specifically, there are two assembly frames 51 , which are symmetrically arranged about the rotating shaft 3 , and the positioning pins 52 penetrate the side surfaces of the assembly frames 51 . The connecting frame 53 is slidably connected to the side surfaces of the assembly frames 51 .

[0025] In this embodiment, a positioning pin 52 is provided, and the valve plate 4 can be restricted on the rotating shaft 3 by the positioning pin 52 in a restricted state.

[0026] Specifically, there are two connecting rods 54, and the two connecting rods 54 are symmetrically arranged about the assembly frame 51. The assembly frame 51 abuts against the inner wall of the positioning groove 55, and the connecting frame 53 is plugged into the inner wall of the positioning groove 55. The assembly frame 51 is set, and the moving direction of the positioning pin 52 can be guided by the assembly frame 51 to increase the stability of the positioning pin 52 when moving.

[0027] In this embodiment: the linkage assembly 6 includes a fixed plate 61, the fixed plate 61 is hinged to the side surface of the connecting rod 54, the side surface of the fixed plate 61 is fixedly connected with a pull rod 62, the side surface of the pull rod 62 is fixedly connected with a T-shaped threaded tube 63, the side surface of the pull rod 62 is provided with a circular hole, and the pull rod 62 is provided with a threaded bolt 64 on the inner wall of the circular hole.

[0028] In this embodiment, a fixing plate 61 is provided, through which the connecting rod 54 and the pull rod 62 can be connected, so as to achieve a linkage effect between the pull rod 62 and the connecting rod 54 .

[0029] Specifically, the pull rod 62 contacts the surface of the assembly frame 51, the T-shaped threaded barrel 63 abuts against the surface of the rotating shaft 3, the threaded bolt 64 is threadedly connected to the inner wall of the T-shaped threaded barrel 63, a threaded groove is provided on the surface of the rotating shaft 3, the threaded bolt 64 is threadedly connected to the inner wall of the threaded groove, and a T-shaped threaded barrel 63 is set. The position of the threaded bolt 64 can be constrained by the T-shaped threaded barrel 63 to achieve the limiting effect of the threaded bolt 64.

[0030] Working principle: when the valve plate 4 needs to be replaced, rotate the threaded bolt 64 counterclockwise. The threaded bolt 64 disengages from the threaded groove during the rotation and loses the restriction on the pull rod 62. Pull the pull rod 62. The pull rod 62 is forced to pull the fixed plate 61. The fixed plate 61 pulls the connecting rod 54 under the action of the pull rod 62. The connecting rod 54 is forced to pull the positioning pin 52. The positioning pin 52 is pulled and displaced out of the positioning groove 55 and loses the restriction on the valve plate 4. When the valve plate 4 loses the restriction, the valve plate 4 can be disassembled and replaced. By setting the limiting component 5 and the linkage component 6, it is convenient for maintenance personnel to disassemble and replace the butterfly valve core, thereby reducing the cumbersome, time-consuming and labor-intensive disassembly operation of the butterfly valve, and further improving the convenience and efficiency of replacing the butterfly valve core.

Claims

1. A butterfly valve for facilitating replacement of a valve core, comprising a housing (1), a controller (2) and a limiting component (5), characterized in that: The controller (2) is fixedly connected to the upper surface of the housing (1); a rotating shaft (3) is bolted to the inner wall of the controller (2); the rotating shaft (3) is rotatably connected to the inner wall of the housing (1); a valve plate (4) is mounted on the surface of the rotating shaft (3); the limiting component (5) is arranged on the surface of the rotating shaft (3); the limiting component (5) comprises an assembly frame (51); the assembly frame (51) is fixedly connected to the surface of the rotating shaft (3); a positioning pin (52) is slidably connected to the inner wall of the assembly frame (51); and a connecting frame (53) is fixedly connected to the side surface of the positioning pin (52).

2. A butterfly valve for facilitating valve core replacement according to claim 1, characterized in that: A connecting rod (54) is hingedly connected to the inner wall of the connecting frame (53), and a positioning groove (55) is provided on the side surface of the valve plate (4).

3. A butterfly valve for easy replacement of valve core according to claim 1, characterized in that: There are two assembly frames (51), which are symmetrically arranged about the rotating shaft (3) in an upper and lower direction. The positioning pin (52) passes through the side surface of the assembly frame (51), and the connecting frame (53) is slidably connected to the side surface of the assembly frame (51).

4. A butterfly valve for easy replacement of valve core according to claim 2, characterized in that: There are two connecting rods (54), which are arranged symmetrically with respect to the assembly frame (51). The assembly frame (51) abuts against the inner wall of the positioning groove (55), and the connecting frame (53) is plugged into the inner wall of the positioning groove (55).

5. A butterfly valve for easy replacement of valve core according to claim 2, characterized in that: The surface of the connecting rod (54) is provided with a linkage assembly (6), and the linkage assembly (6) includes a fixing plate (61), and the fixing plate (61) is hinged to the side surface of the connecting rod (54), and the side surface of the fixing plate (61) is fixedly connected with a pull rod (62), and the side surface of the pull rod (62) is fixedly connected with a T-shaped threaded tube (63), and the side surface of the pull rod (62) is provided with a circular hole, and the inner wall of the circular hole of the pull rod (62) is provided with a threaded bolt (64).

6. A butterfly valve for easy replacement of valve core according to claim 5, characterized in that: The pull rod (62) contacts the surface of the assembly frame (51), the T-shaped threaded tube (63) abuts against the surface of the rotating shaft (3), the threaded bolt (64) is threadedly connected to the inner wall of the T-shaped threaded tube (63), the surface of the rotating shaft (3) is provided with a thread groove, and the threaded bolt (64) is threadedly connected to the inner wall of the thread groove.

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