A worm gear flange butterfly valve that is easy to replace the butterfly plate

Abstract

This utility model relates to the field of worm gear flange butterfly valve technology, and in particular to a worm gear flange butterfly valve with an easy-to-replace disc. It includes a valve body, with external threaded grooves on both the left and right sides of the outer surface of the valve body. A left connecting assembly is threaded onto the left side of the outer surface of the valve body through the corresponding external threaded groove. A left connecting pipe is sleeved on the middle of the left end of the left connecting assembly. A through-hole is opened in the middle of the outer surface of the valve body, and a control assembly is movably sleeved within the through-hole. An installation assembly is snapped into the lower end of the control assembly. This utility model provides a worm gear flange butterfly valve with an easy-to-replace disc. By using the installation assembly, the connecting flange can be rotated off the valve body, and then the movable rod can be moved upwards, causing the cross block to disengage from the cross groove and the movable rod to disengage from the snap hole. The disc body can then be removed from the valve body and replaced with a new disc body. This method is simple, convenient, and practical.

Description

Technical Field

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

[0002] The worm gear flange butterfly valve, also known as the worm gear flange flap valve, is a regulating valve with a simple structure. It can also be used for the on-off control of low-pressure pipeline media.

[0003] The worm gear flange butterfly valve is suitable for pipelines that transport various corrosive and non-corrosive fluid media in engineering systems such as generators, coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting, power generation and environmental protection, etc. It is used to regulate and cut off the flow of the medium. However, the existing worm gear flange butterfly valve still has the following shortcomings: During the use of the worm gear butterfly valve, the butterfly plate is prone to damage due to the pressure of water and needs to be replaced in time. The existing worm gear butterfly valve has low replacement efficiency and great difficulty in replacing the butterfly plate. Therefore, we propose a worm gear flange butterfly valve that is easy to replace the butterfly plate. Utility Model Content

[0004] The main purpose of the utility model is to provide a worm gear flange butterfly valve which is convenient for replacing a butterfly plate, and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A worm gear flange butterfly valve which is convenient for replacing a butterfly plate, comprises a valve body, wherein the left and right outer surfaces of the valve body are both provided with external thread grooves, the left outer surface of the valve body is threadedly connected with a left connecting component via a corresponding external thread groove, the middle part of the left end of the left connecting component is sleeved with a left connecting pipe, the right outer surface of the valve body is threadedly connected with a right connecting component via a corresponding external thread groove, the right connecting component and the left connecting component have the same structure and are symmetrically distributed on the left and right sides, the middle part of the right end of the right connecting component is sleeved with a right connecting pipe, an active hole which passes through inside and outside is opened in the middle part of the outer surface of the valve body, a control component is movably sleeved in the active hole, and an installation component is clamped at the lower end of the control component.

[0007] Preferably, the mounting assembly comprises a disc plate body, a No. 2 sealing ring is fixedly sleeved on the outer surface of the disc plate body, a clamping hole is opened on the upper part of the outer surface of the No. 2 sealing ring, a cross groove is opened on the lower inner wall surface of the clamping hole, and the disc plate body is movably sleeved in the valve body.

[0008] Preferably, the left connecting component includes a connecting flange, a plurality of mounting holes extending left and right are opened at the right end of the connecting flange, a sleeve hole extending left and right is opened in the middle of the left end of the connecting flange, an internal thread groove is provided on the inner wall surface of the connecting flange, and the inner wall surface of the connecting flange is threadedly connected to the outer surface of the valve body through the internal thread groove and the corresponding external thread groove.

[0009] Preferably, a plurality of the mounting holes are distributed on the connecting flange in a central annular array of the connecting flange, and the inner wall surface of the sleeve hole is fixedly connected to the outer surface of the left connecting pipe.

[0010] Preferably, the control assembly includes a fixed rod, a control wheel is fixedly connected to the upper outer surface of the fixed rod, a movable rod is fixedly connected to the lower end of the fixed rod, a cross block is fixedly connected to the lower end of the movable rod, and a No. 1 sealing ring is sleeved on the lower outer surface of the movable rod.

[0011] Preferably, the lower portion of the movable rod is sleeved in the clamping hole, the cross block is clamped in the cross groove, and the No. 1 sealing ring is movably sleeved in the movable hole.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by setting the installation component, when the disc plate body needs to be replaced, the connecting flange is rotated and removed from the valve body, and then the movable rod is moved upward to make the cross block disengage from the cross groove and the movable rod disengage from the clamping hole. Then the disc plate body can be taken out of the valve body and replaced with a new disc plate body. Then the movable rod is sleeved in the movable hole, so that the No. 1 sealing ring is sleeved in the movable hole, the movable rod is sleeved in the sleeve hole, and the cross block is sleeved in the cross groove, thereby realizing the installation of the disc plate body, and then the connecting flange is rotated and installed on the valve body. It is simple, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a worm gear flange butterfly valve that is easy to replace the butterfly plate of the utility model;

[0015] Figure 2 This is a structural schematic diagram of a left connecting assembly of a worm gear flange butterfly valve that is convenient for replacing a butterfly plate according to the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a control assembly of a worm gear flange butterfly valve that is convenient for replacing a butterfly plate according to the utility model;

[0017] Figure 4 The utility model is a structural schematic diagram of an installation assembly of a worm gear flange butterfly valve which is convenient for replacing a butterfly plate.

[0018] In the figure: 1. valve body; 2. external thread groove; 3. left connecting assembly; 4. left connecting pipe; 5. right connecting assembly; 6. right connecting pipe; 7. movable hole; 8. control assembly; 9. mounting assembly; 31. connecting flange; 32. mounting hole; 33. sleeve hole; 34. internal thread groove; 81. fixing rod; 82. control wheel; 83. movable rod; 84. cross block; 85. No. 1 sealing ring; 91. disc plate body; 92. No. 2 sealing ring; 93. clamping hole; 94. cross groove. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A worm gear flange butterfly valve which is convenient for replacing a butterfly plate comprises a valve body 1. External thread grooves 2 are provided on the left and right parts of the outer surface of the valve body 1. The left part of the outer surface of the valve body 1 is threadedly connected with a left connecting component 3 through the corresponding external thread groove 2. A left connecting pipe 4 is sleeved on the middle part of the left end of the left connecting component 3. The right part of the outer surface of the valve body 1 is threadedly connected with a right connecting component 5 through the corresponding external thread groove 2. The right connecting component 5 and the left connecting component 3 have the same structure and are symmetrically distributed on the left and right sides. A right connecting pipe 6 is sleeved on the middle part of the right end of the right connecting component 5. An active hole 7 which passes through inside and outside is opened in the middle part of the outer surface of the valve body 1. A control component 8 is movably sleeved in the active hole 7. An installation component 9 is clamped on the lower end of the control component 8.

[0024] In this embodiment, the mounting assembly 9 includes a disc plate body 91, and a No. 2 sealing ring 92 is fixedly sleeved on the outer surface of the disc plate body 91. The No. 2 sealing ring 92 can effectively improve the sealing performance of the disc plate body 91. A clamping hole 93 is opened on the upper part of the outer surface of the No. 2 sealing ring 92, and a cross groove 94 is opened on the inner wall below the clamping hole 93. The disc plate body 91 is movably sleeved in the valve body 1.

[0025] In this embodiment, the left connecting component 3 includes a connecting flange 31, a plurality of mounting holes 32 passing through the right end of the connecting flange 31 are opened, a sleeve hole 33 passing through the left end of the connecting flange 31 is opened in the middle of the left end, and an internal thread groove 34 is provided on the inner wall surface of the connecting flange 31. The inner wall surface of the connecting flange 31 is threadedly connected to the outer surface of the valve body 1 through the internal thread groove 34 and the corresponding external thread groove 2; the plurality of mounting holes 32 are distributed on the connecting flange 31 in a central annular array, and the sleeve hole 33 passes through the left end of the connecting flange 31. The inner wall surface of the hole 33 is fixedly connected to the outer surface of the left connecting pipe 4; the control component 8 includes a fixed rod 81, the upper part of the outer surface of the fixed rod 81 is fixedly connected to the control wheel 82, the lower end of the fixed rod 81 is fixedly connected to the movable rod 83, the lower end of the movable rod 83 is fixedly connected to the cross block 84, and the lower part of the outer surface of the movable rod 83 is sleeved with a No. 1 sealing ring 85; the lower part of the movable rod 83 is sleeved in the clamping hole 93, the cross block 84 is clamped in the cross groove 94, and the No. 1 sealing ring 85 is movably sleeved in the movable hole 7.

[0026] It should be noted that the utility model is a worm gear flange butterfly valve which is convenient for replacing a butterfly plate. In specific use, by rotating the control wheel 82, the movable rod 83 is driven to rotate. Since the cross block 84 is stuck in the cross groove 94, the disc plate body 91 is driven to rotate, thereby realizing the rapid opening and closing of the utility model, which is simple and convenient. When the disc plate body 91 needs to be replaced, the connecting flange 31 is rotated and removed from the valve body 1, and then the movable rod 83 is moved upward, so that the cross block 84 is disengaged from the cross groove 94, and the movable rod 83 is disengaged from the clamping hole 93. Then, the disc plate body 91 can be taken out of the valve body 1 and replaced with a new disc plate body 91. Then, the movable rod 83 is sleeved in the movable hole 7, so that the No. 1 sealing ring 85 is sleeved in the movable hole 7, the movable rod 83 is sleeved in the sleeve hole 33, and the cross block 84 is sleeved in the cross groove 94, thereby realizing the installation of the disc plate body 91, and then the connecting flange 31 is rotatably installed on the valve body 1, which is simple, convenient and practical.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A worm gear flange butterfly valve for easy replacement of a butterfly plate, comprising a valve body (1), characterized in that: The left and right outer surfaces of the valve body (1) are both provided with external thread grooves (2); the left outer surface of the valve body (1) is threadedly connected to a left connecting component (3) via the corresponding external thread groove (2); a left connecting pipe (4) is sleeved at the middle of the left end of the left connecting component (3); the right outer surface of the valve body (1) is threadedly connected to a right connecting component (5) via the corresponding external thread groove (2); the right connecting component (5) and the left connecting component (3) have the same structure and are symmetrically distributed on the left and right sides; a right connecting pipe (6) is sleeved at the middle of the right end of the right connecting component (5); a movable hole (7) is opened in the middle of the outer surface of the valve body (1) and is passed through inside and outside; a control component (8) is movably sleeved in the movable hole (7); and a mounting component (9) is clamped at the lower end of the control component (8); The mounting assembly (9) comprises a disc plate body (91), a second sealing ring (92) being fixedly sleeved on the outer surface of the disc plate body (91), a clamping hole (93) being formed on the upper portion of the outer surface of the second sealing ring (92), a cross groove (94) being formed on the lower inner wall surface of the clamping hole (93), and the disc plate body (91) being movably sleeved in the valve body (1).

2. A worm gear flange butterfly valve for easy replacement of butterfly plate according to claim 1, characterized in that: The left connecting component (3) comprises a connecting flange (31), a right end of the connecting flange (31) is provided with a plurality of mounting holes (32) extending therethrough to the left and right, a middle portion of the left end of the connecting flange (31) is provided with a sleeve hole (33) extending therethrough to the left and right, an inner wall surface of the connecting flange (31) is provided with an internal thread groove (34), and the inner wall surface of the connecting flange (31) is threadedly connected to the outer surface of the valve body (1) via the internal thread groove (34) and the corresponding external thread groove (2).

3. The worm gear flange butterfly valve for easy replacement of butterfly plate according to claim 2, characterized in that: A plurality of the mounting holes (32) are distributed on the connecting flange (31) in a central annular array of the connecting flange (31), and the inner wall surface of the sleeve hole (33) is fixedly connected to the outer surface of the left connecting pipe (4).

4. The worm gear flange butterfly valve for easy replacement of butterfly plate according to claim 1, characterized in that: The control assembly (8) comprises a fixed rod (81), the upper portion of the outer surface of the fixed rod (81) being fixedly connected to a control wheel (82), the lower end of the fixed rod (81) being fixedly connected to a movable rod (83), the lower end of the movable rod (83) being fixedly connected to a cross block (84), and the lower portion of the outer surface of the movable rod (83) being sleeved with a No. 1 sealing ring (85).

5. The worm gear flange butterfly valve for easy replacement of butterfly plate according to claim 4, characterized in that: The lower part of the movable rod (83) is sleeved in the clamping hole (93), the cross block (84) is clamped in the cross groove (94), and the No. 1 sealing ring (85) is movably sleeved in the movable hole (7).

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