CN219413561U

CN219413561U - Triple eccentric butterfly valve

Info

Publication number: CN219413561U
Application number: CN202320790141.2U
Authority: CN
Inventors: 郭志权; 郝娇山; 何武; 史沫; 张黎; 姚小松; 周海涛
Original assignee: Chongqing Chuanyi Control Valve Co Ltd
Current assignee: Chongqing Chuanyi Control Valve Co Ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-07-25
Anticipated expiration: 2033-04-11

Abstract

The utility model provides a triple eccentric butterfly valve which comprises a valve body, a valve rod and a valve plate, wherein a circulation channel for fluid to pass through is formed in the valve body, the valve plate is arranged in the circulation channel, the valve rod sequentially penetrates through the valve body and the valve plate and then is connected with the valve body, the valve rod can rotate along the axis of the valve body, a first groove body is formed in the valve rod along the axial direction of the valve rod, a second groove body is formed in the valve plate, the first groove body and the second groove body form a first mounting groove, a cylindrical pin for radially limiting the space between the valve rod and the valve plate is arranged in the first mounting groove, and a limiting part for axially limiting the valve plate is arranged in the valve body. The effectual dismouting efficiency that has improved between valve plate and the valve rod of this scheme.

Description

Triple eccentric butterfly valve

Technical Field

The utility model belongs to the field of butterfly valves, and particularly relates to a triple offset butterfly valve.

Background

Currently, referring to fig. 1, a triple offset butterfly valve comprises a valve body 1, a valve plate 2, a valve rod 8, a cylindrical pin 7, a bearing 5 and the like, wherein a fluid circulation channel is arranged on the valve body 1, the valve rod 8 penetrates through the valve body 1 and passes through the circulation channel, and the bearing 5 is arranged between two ends of the valve rod 8 and the valve body 1 for transmission. Valve plate 2 sets up on valve rod 8, realizes the fixed between valve rod 8 and the valve plate 2 through cylindric lock 7, but when fixed through cylindric lock 7 between valve plate 2 and the valve rod 8, need radially run through along valve rod 8 and offer the mounting hole that is used for cylindric lock 7 to pass, lead to valve rod 8 intensity to reduce, and cylindric lock 7 dismouting in-process, need join in marriage and use special machining equipment, the dismouting is consuming time and consuming power.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a triple offset butterfly valve to solve the above-mentioned problems.

In order to achieve the above object and other related objects, the present utility model provides a triple offset butterfly valve, including a valve body, a valve rod and a valve plate, wherein a circulation channel for fluid to pass through is provided on the valve body, the valve plate is provided in the circulation channel, the valve rod sequentially passes through the valve body and the valve plate and then is connected with the valve body, the valve rod can rotate along its axis on the valve body, along the axial direction of the valve rod, a first groove body is provided on the valve rod, a second groove body is provided on the valve plate, the first groove body and the second groove body form a first installation groove, a cylindrical pin for radial limiting between the valve rod and the valve plate is installed in the first installation groove, and a limiting component for axial limiting the valve plate is provided in the valve body.

Further, the cylindrical pin is in clearance fit with the first mounting groove.

Further, the limiting component is a bearing arranged between the valve rod and the valve body, and one end of the bearing extends out of the valve body and then abuts against the valve plate.

Further, an installation channel for the valve rod to pass through is formed in the valve body, third groove bodies are respectively arranged at positions, close to the circulation channel, of the installation channel, fourth groove bodies are formed in the valve plate corresponding to the third groove bodies, the third groove bodies and the fourth groove bodies are spliced to form a second installation groove, and the bearing is installed in the second installation groove.

Further, the flow cross section of the flow channel is circular, and the valve plate is disc-shaped.

Further, a first inclined surface is arranged on the valve body, and a second inclined surface matched with the first inclined surface is arranged on the valve plate.

Further, a sealing ring is arranged on the valve plate, the sealing ring is matched with the first inclined plane to form a sealing pair, a pressing ring used for pressing the sealing ring is further arranged on the valve plate, and the pressing ring is fixed with the valve plate.

Further, a connecting part used for being connected with the valve rod is arranged on the valve plate in a protruding mode, a through hole for the valve rod to penetrate through is formed in the connecting part, and the second groove body is formed in the inner wall of the through hole.

Further, the second groove body is arranged on one side, far away from the first inclined plane, of the through hole.

As described above, the triple offset butterfly valve of the utility model has the following beneficial effects:

in the scheme, the first mounting groove is formed along the axial direction of the valve rod, and the first mounting groove is formed by a first groove body on the valve body and a second groove body on the valve plate, so that when the valve body and the valve plate are assembled, the cylindrical pin is only required to be mounted in the first groove body, then the valve rod passes through the valve plate, the first groove body and the second groove body are overlapped, and the cylindrical pin is positioned in the first groove body and the second groove body. When the valve plate is detached from the valve body, the valve rod is only required to be pulled out of the valve plate, and the cylindrical pin is pulled out of the second groove body along with the valve rod due to the limit of the first groove body, so that the valve rod and the valve plate are detached.

It should be noted that, because the cylindric lock sets up along the axial of valve rod, so it can only carry out radial spacing to the valve plate for the valve plate can rotate along with the valve rod, but the setting of cylindric lock can't carry out axial spacing to the valve plate, just also makes the valve plate probably appear the condition of drunkenness along the valve rod, in order to avoid the appearance of this condition, consequently need set up spacing part, avoid the axial displacement of valve plate along the valve rod.

With this application compare with prior art can, first mounting groove does not offer along the radial of valve rod in this application, but offers along the axial of valve rod, and first mounting groove only locally is located the valve rod, with the diameter along the radial intensity that runs through of valve rod and offer the effectual improvement valve rod. And when cylindric lock perpendicular to valve rod among the prior art set up, the cylindric lock only the tip realizes the fixed between valve rod and the valve body, and the cooperation area between cylindric lock and the valve plate is little for transmission precision between valve plate and the valve rod is low and the face of cylinder and the valve plate cooperation of cylindric lock in this application, for prior art, the cooperation area is bigger, makes the transmission efficiency between valve rod and the valve plate higher.

Drawings

FIG. 1 is a schematic diagram of a part of a triple offset butterfly valve in the prior art.

FIG. 2 is a schematic diagram of a triple offset butterfly valve according to an embodiment of the utility model.

Fig. 3 is a schematic cross-sectional view at A-A in fig. 2.

Fig. 4 is a schematic cross-sectional view at B-B in fig. 2.

Detailed Description

Reference numerals in the drawings of the specification include: valve body 1, valve plate 2, connecting portion 201, clamping ring 3, sealing washer 4, bearing 5, cylindric lock 7, valve rod 8.

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

The application provides a triple offset butterfly valve, and specifically refers to fig. 2 to fig. 4.

In an exemplary embodiment of the application, the triple offset butterfly valve includes valve body 1, valve rod 8 and valve plate 2, set up the circulation passageway that is used for the fluid to pass through on the valve body 1, valve plate 2 sets up in the circulation passageway, valve rod 8 passes valve body 1 in proper order, valve plate 2 back is connected with valve body 1, and valve rod 8 can rotate along self axis on valve body 1, along the axial direction of valve rod 8, first cell body has been seted up on the valve rod 8, the second cell body has been seted up on the valve plate 2, first cell body and second cell body constitute first mounting groove, install cylindric lock 7 that is used for radial spacing between valve rod 8 and the valve plate 2 in the first mounting groove, be provided with the spacing part that is used for carrying out axial spacing to valve plate 2 in the valve body 1.

In this embodiment, the first mounting groove is formed along the axial direction of the valve rod 8, and the first mounting groove is formed by a first groove body on the valve body 1 and a second groove body on the valve plate 2, so that when the valve body 1 and the valve plate 2 are assembled, the cylindrical pin 7 is only required to be mounted in the first groove body, then the valve rod 8 passes through the valve plate 2, so that the first groove body and the second groove body are overlapped, and further, the cylindrical pin 7 is positioned in the first groove body and the second groove body. When the valve plate 2 is detached from the valve body 1, only the valve rod 8 is required to be pulled out of the valve plate 2, and the cylindrical pin 7 is pulled out of the second groove body along with the valve rod 8 due to the limit of the first groove body, so that the valve rod 8 and the valve plate 2 are detached.

It should be further noted that, because the cylindrical pin 7 is disposed along the axial direction of the valve rod 8, it can only radially limit the valve plate 2, so that the valve plate 2 can rotate along with the valve rod 8, but the cylindrical pin 7 cannot axially limit the valve plate 2, so that the valve plate 2 may play along the valve rod 8, so that, in order to avoid the situation, a limiting component needs to be disposed, and the axial movement of the valve plate 2 along the valve rod 8 is avoided.

With this application compare with prior art can, first mounting groove does not offer along the radial of valve rod 8 in this application, but offers along the axial of valve rod 8, and first mounting groove only locally is located valve rod 8, compares with the diameter along the radial running through of valve rod 8 and offers, can effectually improve the intensity of valve rod 8. When the cylindrical pin 7 is perpendicular to the valve rod 8 in the prior art, only the end part of the cylindrical pin 7 is used for fixing the valve rod 8 and the valve body 1, and the matching area between the cylindrical pin 7 and the valve plate 2 is small, so that the transmission precision between the valve plate 2 and the valve rod 8 is low; and the cylindrical surface of cylindric lock 7 cooperates with valve plate 2 in this application, for prior art, the cooperation area is bigger for transmission efficiency between valve rod 8 and valve plate 2 is higher.

In an exemplary embodiment, the cylindrical pin 7 is in a clearance fit with the first mounting groove.

In this embodiment, the cylindrical pin 7 is in clearance fit with the first mounting groove to facilitate removal between the valve stem 8 and the valve plate 2.

In an exemplary embodiment, the limiting member is a bearing 5 disposed between the valve rod 8 and the valve body 1, and one end of the bearing 5 extends out of the valve body 1 and abuts against the valve plate 2.

In this embodiment, the arrangement of the bearing 5 not only enables the valve rod 8 to rotate in the valve body 1, but also realizes axial limitation of the valve plate 2, and prevents the valve plate 2 from axially moving along the valve rod 8.

In an exemplary embodiment, the valve body 1 is provided with a mounting channel through which the valve rod 8 passes, the part of the mounting channel, which is close to the circulation channel, is respectively provided with a third groove body, the valve plate 2 is provided with a fourth groove body corresponding to the third groove body, the third groove body and the fourth groove body are spliced to form a second mounting groove, and the bearing 5 is mounted in the second mounting groove.

It should be noted that, the second installation groove for installing the bearing 5 is composed of the third groove body and the fourth groove body, and the fourth groove body is located on the valve plate 2, that is, the bearing 5 is installed in the valve plate 2, compared with the prior art that the bearing 5 is only installed in the valve body 1, the space between the two bearings 5 is reduced, and the transmission efficiency is improved.

In an exemplary embodiment, the flow channel has a circular flow cross-section and the valve plate 2 has a disc shape.

In this embodiment, the shape of the valve plate 2 is matched with the cross-sectional shape of the flow channel, so that when the valve rod 8 is rotated, the valve plate 2 moves along with the valve rod 8 to open and close the flow channel.

In an exemplary embodiment, the valve body 1 is provided with a first inclined surface and the valve plate 2 is provided with a second inclined surface for cooperation with the first inclined surface.

In this embodiment, the first and second inclined surfaces are provided so as to achieve a seal between the valve stem 8 and the valve plate 2.

In an exemplary embodiment, a sealing ring 4 is arranged on the valve plate 2, the sealing ring 4 cooperates with the first inclined plane to form a sealing pair, a pressing ring 3 for pressing the sealing ring 4 is further arranged on the valve plate 2, and the pressing ring 3 is fixed with the valve plate 2.

Illustratively, a third mounting groove for mounting the sealing ring 4 is formed in the plate surface of the valve plate 2, and the sealing ring 4 is pressed in the third mounting groove by the pressing ring 3.

Illustratively, the clamping ring 3 is fixed with the valve plate 2 by bolts.

In an exemplary embodiment, a connection portion 201 for connecting with the valve rod 8 is convexly arranged on the valve plate 2, a through hole for the valve rod 8 to pass through is formed in the connection portion 201, and the second groove body is formed in the inner wall of the through hole.

In the present embodiment, in order to achieve the attachment between the valve stem 8 and the valve plate 2, a connection portion 201 is provided on the valve plate 2.

In an exemplary embodiment, the second groove body is formed on a side of the through hole away from the first inclined surface.

In this embodiment, for ease of installation, the strength of the valve plate 2 is ensured, and therefore the second groove body is provided on the side of the through hole away from the first inclined surface.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model, and it is intended that the appended claims be interpreted as covering all equivalent modifications and variations as fall within the true spirit and scope of the utility model.

Claims

1. The utility model provides a triple offset butterfly valve, includes valve body, valve rod and valve plate, set up the circulation passageway that is used for the fluid to pass through on the valve body, the valve plate sets up in the circulation passageway, the valve rod passes in proper order behind valve body, the valve plate with the valve body is connected, just the valve rod is in can follow self axis rotation on the valve body, its characterized in that follows the axial direction of valve rod, first cell body has been seted up on the valve rod, the second cell body has been seted up on the valve plate, first cell body and second cell body constitute first mounting groove, install the cylindric lock that is used for radial spacing between valve rod and the valve plate in the first mounting groove, be provided with in the valve body and be used for right the valve plate carries out the spacing part of axial.

2. The triple offset butterfly valve of claim 1, wherein the cylindrical pin is in clearance fit with the first mounting groove.

3. The triple offset butterfly valve according to claim 1, wherein the limiting member is a bearing disposed between the valve stem and the valve body, and wherein one end of the bearing extends out of the valve body and abuts against the valve plate.

4. The triple offset butterfly valve according to claim 3, wherein the valve body is provided with a mounting channel through which the valve rod passes, a third groove body is respectively arranged at a position, close to the flow channel, of the mounting channel, a fourth groove body is arranged on the valve plate corresponding to the third groove body, the third groove body and the fourth groove body are spliced to form a second mounting groove, and the bearing is mounted in the second mounting groove.

5. The triple offset butterfly valve according to claim 1, wherein the flow passage has a circular flow cross-section and the valve plate has a disk shape.

6. The triple offset butterfly valve of claim 1, wherein the valve body is provided with a first bevel and the valve plate is provided with a second bevel for mating with the first bevel.

7. The triple offset butterfly valve according to claim 6, wherein a sealing ring is disposed on the valve plate, the sealing ring cooperates with the first inclined surface to form a sealing pair, and a pressing ring for pressing the sealing ring is further disposed on the valve plate, and the pressing ring is fixed with the valve plate.

8. The triple offset butterfly valve according to claim 6, wherein a connecting portion for connecting with the valve rod is provided on the valve plate in a protruding manner, a through hole through which the valve rod passes is provided on the connecting portion, and the second groove body is provided on an inner wall of the through hole.

9. The triple offset butterfly valve of claim 8, wherein the second groove is formed on a side of the through hole away from the first bevel.