CN217842705U

CN217842705U - Wear-resisting eccentric seal butterfly valve

Info

Publication number: CN217842705U
Application number: CN202123450150.7U
Authority: CN
Inventors: 窦文胜
Original assignee: Tianjin Zhonggong Valve Manufacturing Co ltd
Current assignee: Tianjin Zhonggong Valve Manufacturing Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-11-18
Anticipated expiration: 2031-12-31

Abstract

The application provides a wear-resisting type eccentric seal butterfly valve belongs to valve technical field. This wear-resisting type eccentric seal butterfly valve includes butterfly valve subassembly and drive assembly, the butterfly valve subassembly includes valve body, valve rod, turns over board, sealing washer, clamp plate, locking bolt and disk seat, the disk seat includes base, rubber layer and ceramic layer, drive assembly includes connecting pipe, transmission case and dwang, turns over board week side through setting up the sealing washer, and base, rubber layer and ceramic layer setting are at the valve body inner wall simultaneously, and sealing washer and disk seat contact surface are the inclined plane design, when the valve rod is rotated and turns over the board and close the valve, the medium extrusion in the valve body turns over the board, turns over the board and drives sealing washer extrusion contact ceramic layer, ceramic layer extrusion rubber layer utilizes the elastic characteristics of rubber layer thereby makes the contact surface leakproofness improve greatly, and the design of ceramic layer can reduce wearing and tearing to a great extent simultaneously, improves the wearability, prolongs its life.

Description

Wear-resisting eccentric seal butterfly valve

Technical Field

The application relates to the field of valves, in particular to a wear-resistant eccentric seal butterfly valve.

Background

The butterfly valve is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline medium, i.e. a valve whose closing member is a disk and can be rotated around the valve shaft to open and close, and can be used for controlling the flow of various fluids of air, water, steam, various corrosive media, slurry, oil product, liquid metal and radioactive medium, etc. and mainly playing the role of cutting off and throttling on the pipeline.

The turning plate is the most frequent part rotating in the butterfly valve and is also the most key part of the butterfly valve, the friction loss of the butterfly valve caused by multiple turning of the turning plate in the use process is large, the sealing performance between the turning plate and the valve body is influenced to a great extent, and the service life of the butterfly valve is greatly shortened.

How to invent a wear-resistant eccentric seal butterfly valve to improve the problems becomes a problem to be urgently solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to compensate for above not enough, this application provides a wear-resisting type eccentric seal butterfly valve, aims at improving the wearing feature not good enough between the board and the valve body that turn over of some traditional butterfly valves, long-time use wearing and tearing lead to the problem that its leakproofness reduces.

The embodiment of the application provides a wear-resisting type eccentric seal butterfly valve includes butterfly valve component and drive assembly.

The butterfly valve subassembly includes valve body, valve rod, turns over board, sealing washer, clamp plate, locking bolt and disk seat, the valve rod rotate set up in the valve body, turn over the board install in valve rod one side, the sealing washer cover is located turn over board week side, the clamp plate passes through locking bolt connect in turn over board one side, the clamp plate crimping in sealing washer one side, the disk seat includes including base, rubber layer and ceramic layer, base fixed connection in the valve body, the rubber layer set up in the base is inboard, the ceramic layer set up in rubber layer one side, the sealing washer contact the ceramic layer.

Drive assembly includes connecting pipe, transmission case and dwang, connecting pipe fixed connection in the valve body top, the transmission case install in the connecting pipe top, the valve rod rotates to run through the connecting pipe extends to in the transmission case, dwang one end rotate set up in the transmission case, the rotation lever transmission connect in the valve rod.

In the above-mentioned realization in-process, turning over board week side through setting up the sealing washer, simultaneously base, rubber layer and ceramic layer setting are at the valve body inner wall, and sealing washer and disk seat contact surface personally submit the inclined plane design, when the valve is closed to the rotary valve rod and the board that turns over, the medium extrusion in the valve body turns over the board, it drives sealing washer extrusion contact ceramic layer to turn over the board, ceramic layer extrusion rubber layer utilizes thereby the rubber layer elasticity characteristics to make the contact surface leakproofness improve greatly, the design of ceramic layer can to a great extent reduce wear simultaneously, the wearing resistance is improved, prolong its life.

In a specific embodiment, a buffer bushing is arranged in the connecting pipe, and the buffer bushing is sleeved on the surface of the valve rod.

In the implementation process, the vibration of the valve rod caused by the medium impact turning plate can be buffered by arranging the buffer bush, and the abrasion of the valve rod is reduced.

In a specific embodiment, one section of the rotating rod is provided as a worm, and the surface of the valve rod is sleeved with a worm wheel, and the worm is meshed with the worm wheel.

In the implementation process, the purpose of transmission connection is achieved by arranging a worm and a worm wheel in a meshing mode.

In a specific embodiment, a hand wheel is fixedly connected to one end of the rotating rod.

In the implementation process, the rotating rod is convenient to rotate by arranging the hand wheel.

In a specific embodiment, a rubber gasket is disposed between the pressure plate and the sealing ring.

In the implementation process, the pressing plate can more powerfully press the sealing ring by arranging the rubber pad.

In a specific embodiment, a fixed block is arranged on one side of the turning plate, and the valve rod is arranged in the fixed block in a penetrating mode.

In a specific embodiment, a reinforcing rib is arranged between the fixed block and the turning plate.

In the implementation process, the reinforcing ribs are arranged to enhance the connection firmness.

In a specific embodiment, the end part of the valve body is provided with a flange, and the flange and the valve body are designed in an integrated manner.

In the implementation process, the flange plate is arranged, so that the connection with an external pipeline is facilitated.

In a specific embodiment, the valve body end is disposed in an extension tube having an outer diameter dimension that is less than the outer diameter dimension of the valve body.

In the above-mentioned realization process, through setting up the extension pipe, laminate its inner wall and stretch into when connecting external pipeline, can improve the leakproofness.

In a specific embodiment, the base and the valve body are integrally formed, and the rubber layer and the ceramic layer are embedded in the base.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a wear-resistant eccentric seal butterfly valve provided by an embodiment of the application;

FIG. 2 is a schematic sectional view of a valve body according to an embodiment of the present disclosure;

FIG. 3 is an enlarged schematic view of a structure according to an embodiment of the present disclosure;

fig. 4 is a schematic view of a turning plate structure provided in the embodiment of the present application;

FIG. 5 is a schematic structural diagram of a driving assembly according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a worm according to an embodiment of the present disclosure.

In the figure: 100-a butterfly valve assembly; 110-a valve body; a 111-flange; 112-an extension tube; 120-a valve stem; 121-a worm gear; 130-a flap; 131-a fixed block; 132-reinforcing ribs; 140-a sealing ring; 160-a platen; 161-rubber pad; 170-locking bolts; 180-valve seat; 181-a base; 182-a rubber layer; 183-ceramic layer; 200-a drive assembly; 210-a connecting tube; 211-a cushion bushing; 220-a transmission case; 230-rotating rods; 231-a worm; 232-hand wheel.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-6, the present application provides a wear-resistant eccentric seal butterfly valve including a butterfly valve assembly 100 and a drive assembly 200.

Referring to fig. 1, 2, 3 and 4, the butterfly valve assembly 100 includes a valve body 110, a valve stem 120, a flap 130, a sealing ring 140, a pressing plate 160, a locking bolt 170 and a valve seat 180, the valve stem 120 is rotatably disposed in the valve body 110, the flap 130 is mounted on one side of the valve stem 120, specifically, a fixing block 131 is disposed on one side of the flap 130, the valve stem 120 is disposed in the fixing block 131 in a penetrating manner, a reinforcing rib 132 is disposed between the fixing block 131 and the flap 130, the reinforcing rib 132 is disposed to enhance connection firmness, the sealing ring 140 is sleeved on the periphery of the flap 130, the pressing plate 160 is connected to one side of the flap 130 through the locking bolt 170, specifically, a rubber pad 161 is disposed between the pressing plate 160 and the sealing ring 140, the pressing plate 160 can compress the sealing ring 140 more strongly by disposing a rubber pad 161, the pressing plate 160 is pressed against one side of the sealing ring 140, the valve seat 180 includes a base 181, a rubber layer 182 and a ceramic layer 183, the base 181 is fixedly connected in the valve body 110, the rubber layer 182 is disposed on the inner side of the base 181, the sealing ring 140 is in contact with the ceramic layer 183, the sealing ring 140, and the base 180, the base 181 is integrally formed, and the valve body 110, and the ceramic layer 183, and the base 182, and the base are disposed in the ceramic layer 183, and the base 181.

In some embodiments, the flange 111 is disposed at the end of the valve body 110, the flange 111 and the valve body 110 are integrally designed, and the flange 111 is disposed to facilitate connection with an external pipeline.

In some embodiments, the end of the valve body 110 is disposed on the extension pipe 112, the outer diameter of the extension pipe 112 is smaller than that of the valve body 110, and the extension pipe 112 is disposed to fit the inner wall of the external pipe and extend into the external pipe when being connected to the external pipe, thereby improving the sealing performance.

Referring to fig. 1, 5 and 6, the driving assembly 200 includes a connecting pipe 210, a transmission case 220 and a rotating rod 230, the connecting pipe 210 is fixedly connected to the top of the valve body 110, the connecting pipe 210 is integrally formed on the valve body 110, specifically, a buffer bush 211 is disposed in the connecting pipe 210, the buffer bush 211 is sleeved on the surface of the valve rod 120, the buffer bush 211 is capable of buffering the vibration of the medium impact turning plate 130 to the valve rod 120, so as to reduce the wear of the valve rod 120, the transmission case 220 is mounted on the top of the connecting pipe 210, the transmission case 220 is bolted or welded to the connecting pipe 210, the valve rod 120 rotates to penetrate through the connecting pipe 210 and extend into the transmission case 220, one end of the rotating rod 230 is rotatably disposed in the transmission case 220, and the rotating rod 230 is drivingly connected to the valve rod 120.

In this embodiment, one section of dwang 230 sets up to worm 231, and valve rod 120 surface cover is equipped with worm wheel 121, and valve rod 120 welding has worm wheel 121, and worm 231 and worm wheel 121 mesh mutually, through setting up the mode of worm 231 and worm wheel 121 meshing, reach the purpose that the transmission is connected, and is concrete, dwang 230 one end fixedly connected with hand wheel 232, through setting up hand wheel 232, conveniently rotates dwang 230.

The working principle of the wear-resistant eccentric seal butterfly valve is as follows: the rotating rod 230 is rotated, the rotating rod 230 drives the worm 231 to rotate, the worm 231 drives the worm wheel 121 to rotate, the worm wheel 121 drives the valve rod 120 to rotate, the valve rod 120 drives the turning plate 130 to rotate to close the valve, the medium flowing in the valve body 110 extrudes the turning plate 130, the turning plate 130 drives the sealing ring 140 to extrude and contact the ceramic layer 183, the ceramic layer 183 extrudes the rubber layer 182, and the elastic characteristic of the rubber layer 182 is utilized, so that the sealing performance of the contact surface is greatly improved, meanwhile, the design of the ceramic layer 183 can greatly reduce abrasion, the abrasion resistance is improved, and the service life of the ceramic layer 183 is prolonged.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A wear-resistant eccentric seal butterfly valve is characterized by comprising

The butterfly valve assembly (100) comprises a valve body (110), a valve rod (120), a turning plate (130), a sealing ring (140), a pressure plate (160), a locking bolt (170) and a valve seat (180), wherein the valve rod (120) is rotatably arranged in the valve body (110), the turning plate (130) is installed on one side of the valve rod (120), the sealing ring (140) is sleeved on the periphery of the turning plate (130), the pressure plate (160) is connected to one side of the turning plate (130) through the locking bolt (170), the pressure plate (160) is in pressure joint with one side of the sealing ring (140), the valve seat (180) comprises a base (181), a rubber layer (182) and a ceramic layer (183), the base (181) is fixedly connected in the valve body (110), the ceramic layer (182) is arranged on the inner side of the base (181), the ceramic layer (183) is arranged on one side of the rubber layer (182), and the sealing ring (140) is in contact with the ceramic layer (183);

drive assembly (200), drive assembly (200) includes connecting pipe (210), transmission case (220) and dwang (230), connecting pipe (210) fixed connection in valve body (110) top, transmission case (220) install in connecting pipe (210) top, valve rod (120) are rotated and are run through connecting pipe (210) and extend to in transmission case (220), dwang (230) one end rotate set up in transmission case (220), dwang (230) transmission connect in valve rod (120).

2. A wear-resistant eccentric seal butterfly valve according to claim 1, wherein a buffer bushing (211) is disposed inside the connection tube (210), and the buffer bushing (211) is sleeved on the surface of the valve stem (120).

3. A wear-resistant eccentric seal butterfly valve according to claim 1, wherein the rotating rod (230) is provided with a worm (231) in one section, the surface of the valve rod (120) is sleeved with a worm wheel (121), and the worm (231) and the worm wheel (121) are meshed.

4. A wear-resistant eccentric seal butterfly valve according to claim 1, characterized in that a hand wheel (232) is fixedly connected to one end of the rotating rod (230).

5. A wear-resistant eccentric-seal butterfly valve according to claim 1, characterised in that a rubber pad (161) is arranged between the pressure plate (160) and the seal ring (140).

6. A wear-resistant eccentric seal butterfly valve according to claim 1, wherein a fixed block (131) is provided on one side of the flap (130), and the valve stem (120) is penetratingly provided in the fixed block (131).

7. A wear-resistant eccentric seal butterfly valve according to claim 6, characterized in that a stiffener (132) is arranged between the fixed block (131) and the flap (130).

8. A wear-resistant eccentric-seal butterfly valve according to claim 1, characterized in that a flange (111) is provided at the end of the valve body (110), and the flange (111) and the valve body (110) are of a one-piece design.

9. A wear-resistant eccentric-seal butterfly valve according to claim 1, wherein an extension tube (112) is provided at an end of said valve body (110), said extension tube (112) having an outer diameter dimension that is smaller than an outer diameter dimension of said valve body (110).

10. A wear-resistant eccentric seal butterfly valve according to claim 1, wherein said base (181) and said valve body (110) are integrally formed, and said rubber layer (182) and said ceramic layer (183) are embedded in said base (181).