Bypass butterfly valve with ultra-large diameter

Abstract

The utility model discloses a bypass butterfly valve with an ultra-large diameter, which belongs to the technical field of large-scale water conservancy projects and comprises a support, a detachable butterfly valve component and a soft sealing component, the detachable butterfly valve component is mounted on the support and used for controlling the flow direction of a channel, and the soft sealing component is mounted on the support and used for ensuring the sealing performance of the valve. The detachable butterfly valve assembly is connected with the soft sealing assembly. By means of the mode, the problem that a large-diameter valve is prone to leakage when running on a pipeline is solved, practicability is good, meanwhile, the butterfly plate can be detached, materials can be replaced for cleaning the butterfly plate, and technical support is provided for application of an ultra-large-diameter valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to large -scale water conservancy technical field, concretely relates to a super large caliber bypass butterfly valve. BACKGROUND

[0002] In prior art, the current market's large caliber bypass butterfly valve is limited by technical barriers, the depth and precision of production equipment and the accumulation of super large caliber valve production experience and valve operation data, leading to that the super large caliber bypass butterfly valve has little market share and has certain limitations, and cannot meet the requirements of large water conservancy projects for large caliber and high performance valves. At present, there are many large water conservancy projects, for example, large projects such as South-to-North Water Diversion, Yangtze River to Huaihe River, Hanjiang River to Weihe River, etc. require a large number of valves. The original valves mainly rely on imports, not only the price is high, but also the supply cycle is long, and the after-sales service is not in place, so the localization of large caliber valves for water conservancy projects is imminent.

[0003] Among many prior arts, Chinese patent application CN221120939U discloses a super large caliber butterfly valve, which comprises a super large caliber butterfly valve shell, a valve plate is rotatably installed on the inner wall of the super large caliber butterfly valve shell, a driving assembly is arranged on the top of the super large caliber butterfly valve shell, the driving assembly comprises a mounting groove opened in the inner top wall of the super large caliber butterfly valve shell, a first connecting rod extending into the mounting groove is fixedly installed on the top of the valve plate, a connecting block is fixedly installed on the top of the first connecting rod, a first bevel gear is fixedly installed on the top of the connecting block, a rotating rod is rotatably installed on the inner wall of the left side of the mounting groove, a second bevel gear meshing with the first bevel gear is fixedly installed on the right end of the rotating rod, a motor is fixedly installed on the top of the super large caliber butterfly valve shell, and a rotating shaft extending into the mounting groove is fixedly installed on the output end of the motor.

[0004] However, the utility of the butterfly valve in the patent technology is lacking, and the sealing performance is not completely handled, and leakage is prone to occur.

[0005] Based on this, the utility model discloses a super large caliber bypass butterfly valve to solve the above -mentioned problem. UTILITY MODEL CONTENTS

[0006] In view of the above shortcomings of the prior art, the utility model provides a super large caliber bypass butterfly valve.

[0007] To achieve the above purpose, the utility model realizes by the following technical scheme:

[0008] A super large caliber bypass butterfly valve, comprising a support, a detachable butterfly valve assembly for flow control of the passage is installed on the support, a soft sealing assembly for ensuring the sealing performance of the valve is installed on the support, and the detachable butterfly valve assembly and the soft sealing assembly are connected.

[0009] Further, the detachable butterfly valve assembly comprises a valve body, a butterfly plate, a bottom valve cover and a valve rod, the valve body is fixedly installed between supports, the inner wall of the valve body is rotationally connected with the butterfly plate, the lower end of the valve body is fixedly connected with the bottom valve cover, the outer wall of the valve rod is rotationally connected with the valve body, the butterfly plate is provided with two groups and is fixedly connected with the outer wall of the valve rod in front and back symmetry, and the valve body and the butterfly plate are connected with the soft sealing assembly.

[0010] Further, the detachable butterfly valve assembly further comprises a screw one, and the outer wall of the screw one is threadedly connected with the butterfly plate and the valve rod.

[0011] Further, the soft sealing assembly comprises a screw one, a pressing plate ring and a sealing ring, the outer wall of the screw one is threadedly connected with the butterfly plate and the pressing plate ring, the pressing plate ring and the butterfly plate are locked through the screw one, the inner side of the pressing plate ring and the outer side of the butterfly plate clamp the sealing ring, and the sealing ring is abuttingly connected with the inner wall of the valve body.

[0012] Further, the screw two is provided with a plurality of groups and is equidistantly distributed along the axis of the butterfly plate, and the pressing plate ring and the sealing ring are provided with two groups and are symmetrically distributed along the front and back of the butterfly plate.

[0013] Further, the pressing plate ring and the sealing ring are annular structures.

[0014] Further, the pressing plate ring is made of EPDM rubber.

[0015] Further, the sealing ring is made of elastic P-shaped rubber.

[0016] Compared with the prior art, the detachable butterfly valve assembly has the advantages that: 1. when the butterfly valve flow control is needed, the detachable butterfly valve assembly can be used to rotateally control the through port of the butterfly valve, so that the valve opening and closing can be controlled, the pipeline flow setting can be performed, the soft sealing assembly can be used to seal the sealing structure in the detachable butterfly valve assembly, good sealing effect can be achieved, and the detachable butterfly valve assembly can be disassembled and replaced, so that cleaning is facilitated;

[0017] 2. when the flow direction needs to be changed, the valve rod is rotated, the butterfly plate is rotated by the valve rod, the front and back through ports of the valve body are controlled by the butterfly plate, the bottom valve cover has good sealing effect on the valve body, the nut is rotated, the nut is removed, the screw one is rotated, the screw one is removed from the valve rod and the butterfly plate, the butterfly plate can be removed, and the butterfly plate can be cleaned.

[0018] 3, The utility model discloses when using, soft sealing assembly carries out two -way sealing, and through the excellent elasticity of rubber, the trend that the butterfly plate moves to the water inlet is made up when reverse sealing, and the sealing specific pressure needed by valve is adjusted through screw two, and the sealing ring is fixed and limited through screw two, rotates screw two, and screw two moves to left, and screw two drives the pressing plate ring to move, and the pressing plate ring drives the sealing ring to move, and the sealing ring is fixed with butterfly plate, prevents the pressing plate ring loose, and the sealing ring rebounds to the outer wall direction of valve body with the help of good elasticity, and the sealing ring and the outer wall of butterfly plate reach the two -way sealing purpose of valve body's through -opening.

[0019] 4, The utility model discloses when using, the pressing plate ring uses EPDM rubber long life, and can choose medium of different characteristics suitablely, and the sealing ring adopts high -hardness rubber ring " P " type rubber seal, and the technical parameter uses long life, and the whole vulcanization is seamless connection. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed using in the embodiment or prior art description simple introduction. Obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0021] Figure 1 It is a perspective view of a super-large caliber bypass butterfly valve of the utility model Figure One ;

[0022] Figure 2 It is a front view of a super-large caliber bypass butterfly valve of the utility model

[0023] Figure 3 It is a perspective view of a super-large caliber bypass butterfly valve of the utility model Figure Two ;

[0024] Figure 4 It is a perspective view along the A-A direction of Figure 2 ; Figure One

[0025] Figure 5 It is the enlarged view of B in Figure 4 ;

[0026] Figure 6 It is the enlarged view of C in Figure 4 .

[0027] The reference signs in the drawing respectively represent:

[0028] ​1, support; 2, detachable butterfly valve assembly; 21, valve body; 22, butterfly plate; 23, bottom valve cover; 24, valve rod; 25, screw one; 26, nut; 3, soft sealing assembly; 31, screw two; 32, pressing ring; 33, sealing ring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] In the following description, 'left', 'right', 'front','rear', 'upper' and 'lower' are oriented in the perspective of the front view.

[0031] Embodiment one: in some embodiments, referring to the accompanying drawings of the specification Figures 1-6 A large-diameter bypass butterfly valve, comprising a support 1, a detachable butterfly valve assembly 2 for controlling the flow direction of the passage is installed on the support 1, a soft sealing assembly 3 for ensuring the sealing performance of the valve is installed on the support 1, and the detachable butterfly valve assembly 2 and the soft sealing assembly 3 are connected.

[0032] When the butterfly valve flow control is needed during use of the utility model, the detachable butterfly valve assembly 2 controls the rotation of the butterfly valve opening, so that the valve opening and closing can be controlled, and the pipeline flow setting can be performed, wherein the soft sealing assembly 3 controls the sealing structure inside the detachable butterfly valve assembly 2, so that a good sealing effect is achieved, and the detachable butterfly valve assembly 2 can be disassembled and replaced, so that cleaning is facilitated.

[0033] The detachable butterfly valve assembly 2 comprises a valve body 21, a butterfly plate 22, a bottom valve cover 23 and a valve rod 24; the valve body 21 is fixedly installed between the supports 1, the inner wall of the valve body 21 is rotationally connected with the butterfly plate 22, the lower end of the valve body 21 is fixedly connected with the bottom valve cover 23, the outer wall of the valve rod 24 is rotationally connected with the valve body 21, the butterfly plate 22 has two groups and is fixedly connected with the outer wall of the valve rod 24 in front and back symmetry, and the valve body 21 and the butterfly plate 22 are connected with the soft sealing assembly 3.

[0034] When the flow direction needs to be changed during use of the utility model, the valve rod 24 is rotated, the valve rod 24 drives the butterfly plate 22 to rotate, the butterfly plate 22 controls the opening and closing of the front and rear pipe openings of the valve body 21, and the bottom valve cover 23 has a good sealing effect on the valve body 21.

[0035] The detachable butterfly valve assembly 2 further comprises a screw 25 and a nut 26; the outer wall of the screw 25 is in sliding connection with the butterfly plate 22, the outer wall of the screw 25 is in threaded connection with the valve rod 24, and the screw 25 is in threaded connection with the inner side of the nut 26.

[0036] In use, the nut 26 is rotated, the nut 26 is removed, the screw 25 is rotated, the screw 25 is removed from the valve rod 24 and the butterfly plate 22, and then the butterfly plate 22 can be removed and cleaned.

[0037] The soft sealing assembly 3 comprises a screw 31, a pressing plate ring 32 and a sealing ring 33; the outer wall of the screw 31 is in threaded connection with the butterfly plate 22 and the pressing plate ring 32, the pressing plate ring 32 and the butterfly plate 22 are locked through the screw 31, the inner side of the pressing plate ring 32 and the outer side of the butterfly plate 22 cooperatively clamp the sealing ring 33, and the sealing ring 33 is in abutting connection with the inner wall of the valve body 21; the pressing plate ring 32 and the sealing ring 33 are annular structures; the screw 31 has a plurality of groups and is equidistantly distributed along the axis of the butterfly plate 22; and the pressing plate ring 32 and the sealing ring 33 have two groups and are symmetrically distributed along the front and back of the butterfly plate 22.

[0038] In use, the soft sealing assembly 3 performs bidirectional sealing, the excellent elasticity of rubber compensates for the tendency of the butterfly plate 22 to move towards the water inlet during reverse sealing, the required sealing specific pressure of the valve is adjusted through the screw 31, the sealing ring 33 is fixed and limited through the screw 31, the screw 31 is rotated and moved to the left, the screw 31 drives the pressing plate ring 32 to move, the pressing plate ring 32 drives the sealing ring 33 to move, the sealing ring 33 is tightly fixed with the butterfly plate 22, the pressing plate ring 32 is prevented from loosening, and the two groups of pressing plate rings 32 and sealing rings 33 perform bidirectional sealing on the two side openings of the valve body 21; the sealing ring 33 rebounds to the outer wall of the valve body 21 by virtue of the excellent elasticity of the sealing ring 33, so that the sealing ring 33 and the opening of the valve body 21 and the outer wall of the butterfly plate 22 achieve the purpose of bidirectional sealing.

[0039] The pressing plate ring 32 is made of EPDM rubber.

[0040] In use, the pressing plate ring 32 is made of EPDM rubber and has a long service life, and can be selected according to different characteristics of media.

[0041] The sealing ring 33 is made of elastic P-shaped rubber.

[0042] In use, the sealing ring 33 is made of high-hardness rubber ring P-shaped rubber sealing, has a long service life, is integrally vulcanized and is seamlessly connected.

[0043] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An ultra-large diameter bypass butterfly valve, comprising a bracket (1), characterized in that: A detachable butterfly valve assembly (2) for controlling the flow direction of the channel is mounted on the bracket (1), and a soft sealing assembly (3) for ensuring the sealing performance of the valve is mounted on the bracket (1), wherein the detachable butterfly valve assembly (2) and the soft sealing assembly (3) are connected; The detachable butterfly valve assembly (2) comprises a valve body (21), a butterfly plate (22), a bottom valve cover (23) and a valve stem (24); The valve body (21) is fixedly installed between the brackets (1), the inner wall of the valve body (21) is rotatably connected to the butterfly plate (22), the lower end of the valve body (21) is fixedly connected to the bottom valve cover (23), the outer wall of the valve stem (24) is rotatably connected to the valve body (21), the butterfly plate (22) has two groups and is fixedly connected to the outer wall of the valve stem (24) in a front-to-back symmetrical manner, and the valve body (21) and the butterfly plate (22) are connected to the soft sealing component (3); The soft sealing assembly (3) comprises a second screw (31), a pressure plate ring (32) and a sealing ring (33); The outer wall of the second screw (31) is threadedly connected to the butterfly plate (22) and the pressure plate ring (32), the pressure plate ring (32) and the butterfly plate (22) are locked by the second screw (31), the inner side of the pressure plate ring (32) and the outer side of the butterfly plate (22) cooperate to clamp the sealing ring (33), and the sealing ring (33) is in contact with the inner wall of the valve body (21).

2. The super-large diameter bypass butterfly valve according to claim 1, characterized in that: The detachable butterfly valve assembly (2) further comprises a screw (25) and a nut (26); The outer wall of the screw 1 (25) is slidably connected to the butterfly plate (22), the outer wall of the screw 1 (25) is threadedly connected to the valve stem (24), and the screw 1 (25) is threadedly connected to the inner side of the nut (26).

3. The super-large diameter bypass butterfly valve according to claim 2, characterized in that: The second screws (31) are provided in multiple groups and are evenly distributed along the axis of the butterfly plate (22); the pressure plate ring (32) and the sealing ring (33) are provided in two groups and are symmetrically distributed front and back along the butterfly plate (22).

4. The super-large diameter bypass butterfly valve according to claim 3, characterized in that: The pressure plate ring (32) and the sealing ring (33) are annular structures.

5. The super-large diameter bypass butterfly valve according to claim 4, characterized in that: The pressure plate ring (32) is made of EPDM rubber.

6. The super-large diameter bypass butterfly valve according to claim 5, characterized in that: The sealing ring (33) is made of elastic "P" type rubber.

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