Self-locking butterfly valve

Abstract

The utility model provides a self-locking butterfly valve which comprises a valve shell, an opening and closing assembly arranged in the valve shell, a connecting assembly arranged at the top of the valve shell, a rotating assembly arranged at the top of the valve shell, an up-down moving assembly arranged in the connecting assembly and a fixing assembly arranged in the connecting assembly. The butterfly plate is movably installed in the valve shell, a sealing sleeve is fixedly connected to the outer surface of the butterfly plate, the connecting assembly comprises a fixing block, the fixing block is fixedly connected to the outer surface of the top of the valve shell, and a connecting groove is formed in the fixing block. According to the self-locking butterfly valve, when the rotating assembly rotates, the up-down moving assembly is driven to move up and down in the connecting assembly, when the opening and closing assembly is opened or closed, the up-down moving assembly moves to a proper position, the fixing assembly can fix the up-down moving assembly, and therefore the self-locking function is achieved; and the opening and closing assembly is prevented from shaking due to water pressure and air pressure to affect the sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a self-locking butterfly valve. Background Art

[0002] Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. They mainly play a cutting and throttling role in pipelines. The butterfly valve opening and closing part is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or regulation.

[0003] During use, the butterfly valve can easily become loose due to the pressure of gas and liquid, thus affecting its sealing and use effect, and gas and liquid leakage can easily cause safety accidents.

[0004] Therefore, it is necessary to provide a self-locking butterfly valve to solve the above technical problems. Utility Model Content

[0005] The utility model provides a self-locking butterfly valve, which solves the problem that the butterfly valve is easy to shake under the pressure of water and gas, thereby affecting the sealing performance.

[0006] In order to solve the above technical problems, the utility model provides a self-locking butterfly valve, comprising: a valve housing, wherein an opening and closing assembly is arranged inside the valve housing;

[0007] A connecting assembly, the connecting assembly being arranged on the top of the valve housing;

[0008] A rotating assembly, the rotating assembly being arranged on the top of the valve housing;

[0009] An up-and-down moving component, wherein the up-and-down moving component is arranged inside the connecting component;

[0010] A fixing component is arranged inside the connecting component.

[0011] Preferably, the opening and closing assembly comprises a butterfly plate, the butterfly plate is movably mounted inside the valve housing, and a sealing sleeve is fixedly connected to the outer surface of the butterfly plate.

[0012] Preferably, the connecting assembly comprises a fixing block, the fixing block is fixedly connected to the outer surface of the top of the valve housing, and a connecting groove is provided inside the fixing block.

[0013] Preferably, the rotating assembly comprises a threaded rod, the bottom of the threaded rod is fixedly connected to the top of the butterfly plate, the threaded rod is movably embedded in the connecting groove, and the top of the threaded rod is fixedly connected to a rotating rod.

[0014] Preferably, the up-and-down moving assembly comprises a sliding block, the sliding block is threadedly connected to the outer surface of the threaded rod, and a fixing hole is provided on the surface of the sliding block.

[0015] Preferably, the fixing assembly comprises a fixing rod, the fixing rod is movably embedded in the fixing block, one end of the fixing rod is movably embedded in the fixing hole, and a fixing spring is movably mounted on the outer surface of the fixing rod.

[0016] Preferably, an auxiliary component is provided inside the butterfly plate, and the auxiliary component includes a connecting block, which is movably embedded in the top of the butterfly plate, and the top of the connecting block is movably embedded in the bottom of the threaded rod, and the bottom of the connecting block is fixedly connected to a connecting spring rod.

[0017] Compared with the related art, the self-locking butterfly valve provided by the utility model has the following beneficial effects:

[0018] The utility model provides a self-locking butterfly valve. When the rotating component rotates, it drives the up and down moving component to move up and down inside the connecting component. When the opening and closing component is opened or closed, the up and down moving component moves to a suitable position and the fixed component can fix the up and down moving component, thereby achieving a self-locking effect and preventing the opening and closing component from shaking due to water pressure and air pressure, thereby affecting its sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a first embodiment of a self-locking butterfly valve provided by the utility model;

[0020] Figure 2 for Figure 1 The front cross-sectional structural schematic diagram shown;

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0022] Figure 4 The present invention is a schematic structural diagram of a second embodiment of a self-locking butterfly valve provided by the present invention.

[0023] Numbers in the figure: 1. Valve housing,

[0024] 2. Opening and closing assembly, 21. Butterfly plate, 22. Sealing sleeve,

[0025] 3. Connecting assembly, 31. Fixing block, 32. Connecting slot,

[0026] 4. Rotating assembly, 41. Threaded rod, 42. Rotating rod,

[0027] 5. Up and down moving components, 51. Sliding block, 52. Fixing hole,

[0028] 6. Fixing assembly, 61. Fixing rod, 62. Fixing spring,

[0029] 7. Auxiliary components, 71. Connecting block, 72. Connecting spring rod. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0031] First embodiment

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A schematic structural diagram of a first embodiment of a self-locking butterfly valve provided by the utility model; Figure 2 for Figure 1 The front cross-sectional structural schematic diagram shown; Figure 3 for Figure 2 The enlarged schematic diagram of part A is shown. A self-locking butterfly valve comprises: a valve housing 1, wherein an opening and closing assembly 2 is arranged inside the valve housing 1;

[0033] A connecting component 3, wherein the connecting component 3 is arranged on the top of the valve housing 1;

[0034] A rotating assembly 4, wherein the rotating assembly 4 is arranged on the top of the valve housing 1;

[0035] An up-and-down moving component 5, wherein the up-and-down moving component 5 is arranged inside the connecting component 3;

[0036] The fixing component 6 is arranged inside the connecting component 3 .

[0037] The opening and closing component 2 can rotate to seal and open the interior of the valve housing 1, the connecting component 3 is used for connection and limiting, the rotating component 4 is used to drive the opening and closing component 2 to rotate to open and close the interior of the valve housing 1 and drive the up and down moving component 5 to move to complete self-locking, the up and down moving component 5 is used to connect with the fixed component 6 to complete the self-locking of the rotating component 4, and the fixed component 6 is used to fix the up and down moving component 5.

[0038] The opening and closing assembly 2 includes a butterfly plate 21 , which is movably installed inside the valve housing 1 , and a sealing sleeve 22 is fixedly connected to the outer surface of the butterfly plate 21 .

[0039] The butterfly plate 21 is circular in shape and can be embedded in the valve housing 1. The sealing sleeve 22 is sleeved on the outer surface of the butterfly plate 21. The sealing sleeve 22 is made of elastic polymer material. It has a wide temperature range and will produce larger deformation when a smaller stress is given in different media. This deformation can provide contact pressure, compensate for the leakage gap, and achieve the purpose of sealing.

[0040] The connecting assembly 3 comprises a fixing block 31 , and the fixing block 31 is fixedly connected to the outer surface of the top of the valve housing 1 , and a connecting groove 32 is formed inside the fixing block 31 .

[0041] The fixing block 31 is fixedly connected to the center of the top outer surface of the valve housing 1. The connecting groove 32 is a hexagonal groove. The up-and-down moving assembly 5 is just engaged in the inside of the connecting groove 32, so that the connecting groove 32 has a limiting function.

[0042] The rotating assembly 4 includes a threaded rod 41 , the bottom of which is fixedly connected to the top of the butterfly plate 21 , the threaded rod 41 is movably embedded in the connecting groove 32 , and the top of the threaded rod 41 is fixedly connected to a rotating rod 42 .

[0043] The bottom of the threaded rod 41 is fixedly connected to the center of the top of the butterfly plate 21, and sealing blocks are fixedly installed on the surfaces of the upper and lower ends to ensure the sealing inside the valve housing 1. The rotating rod 42 is fixedly connected to the top of the threaded rod 41 and movably installed on the outer surface of the top of the fixed block 31. A turntable is installed on the top of the rotating rod 42 to facilitate rotation adjustment.

[0044] The up-and-down moving assembly 5 includes a sliding block 51 . The sliding block 51 is threadedly connected to the outer surface of the threaded rod 41 . A fixing hole 52 is formed on the surface of the sliding block 51 .

[0045] The sliding block 51 is hexagonal in shape and is just embedded in the connecting groove 32. When the threaded rod 41 rotates, the limit of the connecting groove 32 drives the sliding block 51 threadedly connected to the threaded rod 41 to slide up and down, thereby preventing the sliding block 51 from rotating. There are two fixing holes 52, which are respectively opened on the surfaces of the left and right ends of the sliding block 51. The left one is used to connect and fix with the fixing component 6 when the butterfly plate 21 is closed, and the right one is used to connect and fix with the fixing component 6 when the butterfly plate 21 is opened.

[0046] The fixing assembly 6 includes a fixing rod 61 , which is movably embedded in the fixing block 31 , one end of which is movably embedded in the fixing hole 52 , and a fixing spring 62 is movably mounted on the outer surface of the fixing rod 61 .

[0047] There are two fixing components 6. The left end of the fixing block 31 near the top and the right end near the bottom are both provided with a hole. The two fixing rods 61 are composed of a rod with a wedge block fixedly connected at one end. The two connecting rods in the two fixing rods 61 are respectively rotatably installed inside the two grooves. The two fixing springs 62 are respectively sleeved on the outer surfaces of the two connecting rods. When the butterfly plate 21 is closed, the sliding block 51 is at the top end inside the connecting groove 32, and the wedge block in the top fixing rod 61 is embedded in the left end fixing hole 52 to fix the sliding block 51. When the butterfly plate 21 is opened, the sliding block 51 is at the bottom end inside the connecting groove 32, and the wedge block in the bottom fixing rod 61 is embedded in the right end fixing hole 52 to fix the sliding block 51, thereby forming a self-locking.

[0048] The working principle of a self-locking butterfly valve provided by the utility model is as follows:

[0049] When the butterfly plate 21 needs to be opened or closed, the rotating rod 42 is rotated, the threaded rod 41 rotates inside the connecting groove 32, and drives the butterfly plate 21 to rotate, and the sliding block 51 threadedly connected to the threaded rod 41 slides up and down. When the butterfly plate 21 is rotated ninety degrees to be fully opened or closed, the elastic force of the fixing spring 62 pushes one end of the fixing rod 61 to be embedded in the fixing hole 52, thereby fixing the sliding block 51, and the threaded rod 41 and the butterfly plate 21 cannot rotate, forming a self-locking.

[0050] Compared with the related art, the self-locking butterfly valve provided by the utility model has the following beneficial effects:

[0051] The utility model provides a self-locking butterfly valve. When the rotating component 4 rotates, it drives the up-down moving component 5 to move up and down inside the connecting component 3. When the opening and closing component 2 is opened or closed, the up-down moving component 5 moves to a suitable position and the fixing component 6 can fix the up-down moving component 5, thereby achieving a self-locking effect and preventing the opening and closing component 2 from shaking due to water pressure and air pressure, thereby affecting its sealing.

[0052] Second embodiment

[0053] Please refer to Figure 4 Based on the self-locking butterfly valve provided in the first embodiment of the present application, the second embodiment of the present application provides another self-locking butterfly valve. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0054] Specifically, the difference of the self-locking butterfly valve provided in the second embodiment of the present application is that, in a self-locking butterfly valve, an auxiliary component 7 is arranged inside the butterfly plate 21, and the auxiliary component 7 includes a connecting block 71, and the connecting block 71 is movably embedded in the top of the butterfly plate 21, and the top of the connecting block 71 is movably embedded in the bottom of the threaded rod 41, and the bottom of the connecting block 71 is fixedly connected to a connecting spring rod 72.

[0055] A groove is provided at the center of the butterfly plate 21, and the bottom of the connecting block 71 is movably embedded in the groove. The connecting spring rod 72 is composed of a rod with a spring sleeved on the outer surface of the rod. The spring is movably sleeved on the outer surface of the rod embedded in the groove provided in the butterfly plate 21, and the bottom is fixedly connected to the bottom of the connecting block 71. The bottom is fixedly connected to the bottom of the groove. A hole is provided at the bottom of the threaded rod 41. The elastic force of the spring pushes the top of the connecting block 71 embedded in the hole of the threaded rod 41. Rotating the threaded rod 41 can drive the butterfly plate 21 to rotate through the auxiliary component 7.

[0056] The working principle of a self-locking butterfly valve provided by the utility model is as follows:

[0057] When the threaded rod 41 is damaged, the connecting spring rod 72 is pulled downward to drive the top of the connecting block 71 to separate from the bottom of the threaded rod 41 , and then the connecting spring rod 72 is rotated to drive the butterfly plate 21 to rotate, thereby completing the opening and closing of the butterfly plate 21 .

[0058] Compared with the related art, the self-locking butterfly valve provided by the utility model has the following beneficial effects:

[0059] When the threaded rod 41 is damaged, the connecting block 71 can be pulled out of the threaded rod 41 to adjust the opening and closing of the butterfly plate 21 to prevent the threaded rod 41 from being damaged and an emergency situation from being unable to be handled in time, causing a safety hazard.

[0060] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-locking butterfly valve, characterized in that: include: A valve housing, wherein an opening and closing assembly is arranged inside the valve housing; A connecting assembly, the connecting assembly being arranged on the top of the valve housing; A rotating assembly, the rotating assembly being arranged on the top of the valve housing; An up-and-down moving component, wherein the up-and-down moving component is arranged inside the connecting component; A fixing component is arranged inside the connecting component.

2. A self-locking butterfly valve according to claim 1, characterized in that: The opening and closing assembly comprises a butterfly plate, which is movably mounted inside the valve housing, and a sealing sleeve is fixedly connected to the outer surface of the butterfly plate.

3. A self-locking butterfly valve according to claim 2, characterized in that: The connecting assembly comprises a fixing block, the fixing block is fixedly connected to the outer surface of the top of the valve housing, and a connecting groove is provided inside the fixing block.

4. A self-locking butterfly valve according to claim 3, characterized in that: The rotating assembly comprises a threaded rod, the bottom of which is fixedly connected to the top of the butterfly plate, the threaded rod is movably embedded in the connecting groove, and the top of the threaded rod is fixedly connected to a rotating rod.

5. A self-locking butterfly valve according to claim 4, characterized in that: The up-and-down moving assembly comprises a sliding block, which is threadedly connected to the outer surface of the threaded rod, and a fixing hole is formed on the surface of the sliding block.

6. A self-locking butterfly valve according to claim 5, characterized in that: The fixing assembly comprises a fixing rod, the fixing rod is movably embedded in the fixing block, one end of the fixing rod is movably embedded in the fixing hole, and a fixing spring is movably mounted on the outer surface of the fixing rod.

7. A self-locking butterfly valve according to claim 4, characterized in that: An auxiliary component is arranged inside the butterfly plate, and the auxiliary component includes a connecting block, which is movably embedded in the top of the butterfly plate, and the top of the connecting block is movably embedded in the bottom of the threaded rod, and the bottom of the connecting block is fixedly connected to a connecting spring rod.

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