CN210770278U

CN210770278U - Double-seat butterfly valve

Info

Publication number: CN210770278U
Application number: CN201920856756.4U
Authority: CN
Inventors: 李满然; 谭冬阳
Original assignee: Wenzhou Nuomeng Technology Co ltd
Current assignee: Wenzhou Nuomeng Technology Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-06-16
Anticipated expiration: 2029-06-06

Abstract

The utility model relates to a two-seat butterfly valve, its characterized in that is in the valve body both ends be equipped with respectively with valve body fixed connection's annular valve gap, be equipped with the valve plate between valve body and both sides valve gap respectively, be equipped with valve rod and lower valve rod respectively at the both ends of two sets of valve plates, go up the valve rod and pass the valve body respectively down and arrange in outside the valve body and with the valve body movive seal cooperation, two sets of valve rods of going up install the handle on passing through link gear fixed connection and one of them valve rod, the handle can drive the valve rod in step under the external force drive, valve plate and the synchronous linkage of lower valve rod open and close the medium runner of valve body. The beneficial effects of the utility model are that through set up two sets of valve plates in the valve body, when wherein sealing washer in a set of valve plate and the valve body takes place to damage and leads to leaking like this, another set of valve plate can play the effect of separation or isolated medium, effective protective apparatus's safe in utilization and avoid the abnormal of medium to mix.

Description

Double-seat butterfly valve

Technical Field

The utility model relates to a butterfly valve, more specifically the pneumatic actuator that says so relates to, mainly be applied to the valve open with closed automatic control.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

If the sealing ring leaks in the use process of the existing butterfly valve, the materials are easily mixed, and the use requirements of the market cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems that a sealing ring is leaked during the use process of the existing butterfly valve, materials are easy to mix and the like, the utility model provides a double-seat butterfly valve which is simple in structure and high in reliability; moreover, the mixing and the separation of materials can be effectively avoided under the condition that one group of butterfly valves are damaged by sealing rings.

In order to solve the technical problem, the technical proposal adopted by the utility model is a double-seat butterfly valve, which comprises a valve body with a medium flow passage; the valve is characterized in that two ends of the valve body are respectively provided with an annular valve cover fixedly connected with the valve body, valve plates are respectively arranged between the valve body and the valve covers on two sides, two ends of each of the two groups of valve plates are respectively provided with an upper valve rod and a lower valve rod, the upper valve rod and the lower valve rod respectively penetrate through the valve body and are arranged outside the valve body and are in dynamic sealing fit with the valve body, the two groups of upper valve rods are fixedly connected through a linkage mechanism, one of the upper valve rods is provided with a handle, and the handle can synchronously drive the upper valve rod, the valve plates and the lower valve rods to synchronously link and open.

Furthermore, the linkage mechanism comprises an active rod sleeve and a passive rod sleeve, the active rod sleeve is sleeved on one of the upper valve rods and is fixedly connected with the upper valve rod, the passive rod sleeve is sleeved outside the other upper valve rod and is fixedly connected with the upper valve rod, the active rod sleeve and the passive rod sleeve are movably and fixedly connected through a linkage strip, and the handle is fixed on the active rod sleeve.

Furthermore, the driving rod sleeve comprises an inner rod sleeve and a limiting sleeve, two ends of the limiting sleeve are communicated, the bottom end of the limiting sleeve is fixedly connected with the valve body through a mounting seat, a limiting notch is formed in the upper end of the limiting sleeve, and the handle is arranged in the limiting notch and is fixedly connected with the inner rod sleeve; the upper end of the inner rod sleeve is provided with a pressing cap with the diameter larger than the outer diameter of the limiting sleeve, a first connecting block is arranged on one side of the pressing cap, a second connecting block with the angle equal to that of the first connecting block and the length equal to that of the first connecting block is arranged at the upper end of the driven rod sleeve, and two ends of the connecting strip are hinged with the first connecting block and the second connecting block to enable the driving rod sleeve and the driven rod sleeve to be synchronously linked.

Furthermore, a counter bore is arranged on the inner rod sleeve, and a through hole is arranged at the bottom of the counter bore; the side wall of the limiting sleeve at one end of the limiting notch is provided with a plurality of adjusting holes, the handle comprises a hand lever and a handle, one end of the hand lever is provided with an annular block, the annular block is provided with a bulge, the bulge can be arranged in the adjusting holes, the outer diameter of the annular block is matched with the inner diameter of the counter bore and is arranged in the counter bore, and the other end of the handle penetrates through the through hole to be arranged outside the inner lever sleeve and is fixedly connected with the handle; an adjusting spring is sleeved outside the handle, one end of the adjusting spring is arranged in the counter bore, the adjusting spring is pressed against the annular block, and the other end of the adjusting spring is pressed against the bottom of the counter bore.

Furthermore, a drain valve is arranged between the two groups of valve plates in the valve body, and the drain valve is fixed on the valve body and communicated with a medium flow passage of the valve body; the driven rod sleeve is provided with a driving rod which can open the drain valve when the handle rotates to drive the valve plate to close the medium flow passage of the valve body.

Furthermore, the drain valve comprises a valve seat with two communicated ends, and a drain pipe is arranged on the side wall of the valve seat; the upper end of the valve seat is provided with a limiting step and a drainage block which is in movable sealing fit with the limiting step, the bottom of the drainage block is provided with a drainage spring, one end of the drainage spring is pressed against the drainage block, and the other end of the drainage spring is pressed against the valve body; a discharge hole is formed in the valve seat on the valve body, a piston rod is arranged in the discharge hole, the piston rod is fixedly connected with the discharge block, and the piston rod can open or block the discharge hole under the driving of the discharge block; the driving rod on the driven rod sleeve can drive the drainage block to drive the piston rod to open the drainage valve when the handle drives the valve plate to close the valve body medium flow passage.

The utility model has the advantages that two groups of valve plates are arranged in the valve body, so that when one group of valve plates and the sealing ring in the valve body are damaged to cause leakage, the other group of valve plates can play a role of separating or isolating media, thereby effectively protecting the use safety of equipment and avoiding the abnormal mixing of the media; the drain valve is arranged in the valve body, the driven rod sleeve is provided with the enclosing driving rod, and the drain valve is arranged between the two groups of valve plates in the valve body, so that when the upper valve rod is driven by the rotating handle to drive the valve plates to be closed, the driving rod on the driven rod sleeve can open the drain valve; at the moment, if the sealing ring in the valve body is damaged to cause leakage, the medium can be discharged out of the valve body through the drain valve, so that abnormal mixing of the medium is effectively avoided, safety production accidents are prevented from being caused, and the use safety of downstream equipment is guaranteed.

Drawings

FIG. 1 is a closed perspective view of a double-seat butterfly valve according to an embodiment of the present invention

FIG. 2 is a perspective view of the embodiment of the present invention showing the opening of a double-seat butterfly valve

FIG. 3 is a sectional view of a double seat butterfly valve according to an embodiment of the present invention

FIG. 4 is a perspective view of the valve body in the embodiment of the present invention

FIG. 5 is a perspective view of an inner rod cover according to an embodiment of the present invention

FIG. 6 is a perspective view of the embodiment of the present invention showing the structure of the driven rod sleeve

FIG. 7 is a perspective view of an embodiment of the present invention

FIG. 8 is a perspective view of the valve seat according to the embodiment of the present invention

FIG. 9 is a perspective view of the handle according to the embodiment of the present invention

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-9, the utility model relates to a double-seat butterfly valve, which comprises a valve body 1 with a medium flow passage; the two ends of the valve body 1 are respectively provided with an annular valve cover 2 fixedly connected with the valve body 1, a valve plate 3 is respectively arranged between the valve body 1 and the valve covers 2 at the two sides, the two ends of the two groups of valve plates 3 are respectively provided with an upper valve rod 4 and a lower valve rod 5, the upper valve rod 4 and the lower valve rod 5 respectively penetrate through the valve body 1 and are arranged outside the valve body 1 and are in dynamic sealing fit with the valve body 1, the two groups of upper valve rods 4 are fixedly connected through a linkage mechanism 6, one upper valve rod 4 is provided with a handle 7, and the handle 7 can synchronously drive the upper valve rod 4, the valve plate 3 and the lower valve rod 5 to synchronously link and open and close a medium flow passage of; in the use process, the handle 7 drives the upper valve rod 4 to drive the valve plates 3 in one group to rotate to open or close, and the upper valve rods 4 of the valve plates 3 in the other group are fixedly connected together through the linkage mechanism 6, so that when the handle 7 drives the valve plates 3 in one group to rotate to open or close, the valve plates 3 in the other group are synchronously opened or closed under the drive of the upper valve rods 4. Through set up two sets of valve plates 3 in valve body 1, when the sealing washer takes place to damage in one of them group valve plate 3 and the valve body 1 and leads to leaking like this, another group valve plate 3 can play the effect of separation or isolated medium, effective protective apparatus's safe in utilization and avoid the improper mixture of medium.

In this embodiment, in order to ensure the synchronous opening or closing of the two valve plates 3, the linkage mechanism 6 includes a driving rod sleeve 61 and a driven rod sleeve 62, the driving rod sleeve 61 is sleeved on one of the upper valve rods 4 and fixedly connected, the driven rod sleeve 62 is sleeved outside the other upper valve rod 4 and fixedly connected, the driving rod sleeve 61 and the driven rod sleeve 62 are movably and fixedly connected through a linkage bar 63, and the handle 7 is fixed on the driving rod sleeve 61; one upper valve rod 4 is connected with the driving rod sleeve 61, the other upper valve rod 4 is connected with the driven rod sleeve 62, and the driving rod sleeve 61 and the driven rod sleeve 62 are movably connected through the linkage strip 63, so that when the handle 7 drives the driving rod sleeve 61 to rotate, the upper valve rod 4 fixedly connected with the driving rod sleeve 61 rotates together, and the valve plate 3 can be synchronously rotated to be opened or closed; and because the upper valve rod 4 of the other group of valve plates 3 is fixed with the driven rod sleeve 62, and the driven rod sleeve 62 is connected with the driving rod sleeve 61 through the linkage strip 63, when the handle 7 drives the driving rod sleeve 61 to drive the upper valve rod 4 and the valve plate 3 of one group to rotate, open and close, the upper valve rod 4 and the valve plate 3 of the other group synchronously rotate, open or close under the drive of the driven rod sleeve 62.

In this embodiment, in order to facilitate the synchronous linkage of the two groups of valve plates 3 and facilitate the limitation of the rotary opening or closing stroke of the handle 7, the driving rod sleeve 61 includes an inner rod sleeve 611 and a limiting sleeve 612, two ends of the limiting sleeve 612 are communicated, the bottom end of the limiting sleeve 612 is fixedly connected with the valve body 1 through a mounting seat 6121, a limiting notch 6122 is arranged at the upper end of the limiting sleeve 612, and the handle 7 is placed in the limiting notch 6122 and is fixedly connected with the inner rod sleeve 611; the upper end of the inner rod sleeve 611 is provided with a pressing cap 6111 with the diameter larger than the outer diameter of the limiting sleeve 612, one side of the pressing cap 6111 is provided with a first connecting block 6112, the upper end of the driven rod sleeve 62 is provided with a second connecting block 621 with the same angle and length as the first connecting block 6112, and two ends of the connecting strip 63 are hinged with the first connecting block 6112 and the second connecting block 621 to enable the driving rod sleeve 61 and the driven rod sleeve 62 to be synchronously linked; the limiting sleeve 612 is arranged outside the inner rod sleeve 611, and the limiting sleeve 612 is fixed with the valve body 1 by the mounting seat 6121, so that when the handle 7 is mounted on the inner rod sleeve 611, the limiting notch 6122 in the limiting sleeve 612 can limit the rotation stroke of the handle 7, the valve plate 3 and a sealing ring in the valve body 1 are effectively prevented from being damaged due to an overlarge rotation angle of the handle 7, and the sealing performance is ensured; and set up first connecting block 6112 in the upper end of inner rod cover 611 additionally, set up the second connecting block 621 on the driven rod cover 62, during the assembly, just can utilize connecting strip 63 to articulate with first connecting block 6112 and second connecting block 621 mutually respectively and realize the synchronous interlock of driving rod cover 61 and driven rod cover 62, guarantee that two sets of valve plates 3 can be opened or closed synchronously under the drive of handle 7 in valve body 1.

In this embodiment, in order to facilitate the handle 7 to adjust and self-lock the opening degree of the valve plate 3, a counter bore 6113 is disposed on the inner rod sleeve 611, and a through hole 6114 is disposed at the bottom of the counter bore 6113; a plurality of adjusting holes 6123 are formed in the side wall of the limiting sleeve 612 at one end of the limiting notch 6122, the handle 7 comprises a hand lever 71 and a handle 72, an annular block 711 is arranged at one end of the hand lever 71, a protrusion 712 is arranged on the annular block 711, the protrusion 712 can be arranged in the adjusting holes 6123, the outer diameter of the annular block 711 is matched with the inner diameter of the counter bore 6113 and is arranged in the counter bore 6113, and the other end of the handle 7 penetrates through the through hole 6114 and is arranged outside the inner lever sleeve 611 and fixedly connected with the handle 72; an adjusting spring 73 is sleeved outside the handle 7, one end of the adjusting spring 73 is arranged in the counter bore 6113 and is pressed against the annular block 711, and the other end of the adjusting spring 73 is pressed against the bottom of the counter bore 6113; the inner rod sleeve 611 is provided with the counter bore 6113, the side wall of the counter bore 6113 is provided with the adjusting hole 6123, so that when one end of the handle 7 is installed in the counter bore 6113, the protrusion 712 at one end of the handle 7 can be inserted into the adjusting hole 6123 to adjust and fix the opening degree of the valve plate 3, the annular block 711 of the handle 7 is provided with the adjusting spring 73, the handle 7 can be limited through the adjusting spring 73, and the protrusion 712 is effectively prevented from being separated from the adjusting hole 6123 to influence the self-locking of the handle 7; when the opening degree of the valve plate 3 needs to be adjusted, the handle 7 is pulled backwards with force, so that the protrusion 712 on the annular block 711 of the handle 7 is separated from the adjusting hole 6123, and at the moment, the opening degree of the valve plate 3 can be adjusted by rotating the handle 7; when the adjustment is completed, the handle 7 is released, and the adjusting spring 73 can drive the handle 7 to move transversely and drive the protrusion 712 on the annular block 711 at the end of the handle 7 to be inserted into the adjusting hole 6123, so that the handle 7 is self-locked.

In the embodiment, in order to prevent the abnormal mixing of the media caused by leakage due to the damage of the sealing ring in the valve body 1, a drain valve 8 is arranged between the two groups of valve plates 3 in the valve body 1, and the drain valve 8 is fixed on the valve body 1 and communicated with the media flow passage of the valve body 1; a driving rod 622 is arranged on the driven rod sleeve 62, and the driving rod 622 can open the drain valve 8 when the handle 7 rotates to drive the valve plate 3 to close the medium flow passage of the valve body 1; by arranging the drain valve 8 in the valve body 1 and arranging the enclosing driving rod 622 on the driven rod sleeve 62, the drain valve 8 is arranged between the two groups of valve plates 3 in the valve body 1, so that when the upper valve rod 4 is driven by the rotating handle 7 to drive the valve plates 3 to close, the driving rod 622 on the driven rod sleeve 62 can open the drain valve 8; at this moment, if the sealing washer in the valve body 1 takes place to damage and causes the leakage, outside just the medium just can 8 discharge valve bodies 1 through the escape valve like this, effectively avoided the improper mixture of medium, prevented to cause the safety in production accident and the safe in utilization of guarantee downstream equipment.

In this embodiment, in order to avoid the abnormal mixing of media and the safety damage of downstream equipment when the sealing ring in the valve body 1 is damaged, the drain valve 8 includes a valve seat 81 with two ends communicated with each other, and a drain pipe 82 is arranged on the side wall of the valve seat 81; the upper end of the valve seat 81 is provided with a limit step 811 and a drain block 83 which is in movable sealing fit with the limit step 811, the bottom of the drain block 83 is provided with a drain spring 84, one end of the drain spring 84 is pressed against the drain block 83, and the other end is pressed against the valve body 1; a drain hole 85 is arranged in the valve seat 81 on the valve body 1, a piston rod 86 is arranged in the drain hole 85, the piston rod 86 is fixedly connected with the drain block 83, and the piston rod 86 can open or block the drain hole 85 under the driving of the drain block 83; the driving rod 622 on the driven rod sleeve 62 can drive the drain block 83 to drive the piston rod 86 to open the drain valve 8 when the handle 7 drives the valve plate 3 to close the medium flow passage of the valve body 1.

The above embodiments should not be considered as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. A double-seat butterfly valve comprises a valve body with a medium flow passage; the valve is characterized in that two ends of the valve body are respectively provided with an annular valve cover fixedly connected with the valve body, valve plates are respectively arranged between the valve body and the valve covers on two sides, two ends of each of the two groups of valve plates are respectively provided with an upper valve rod and a lower valve rod, the upper valve rod and the lower valve rod respectively penetrate through the valve body and are arranged outside the valve body and are in dynamic sealing fit with the valve body, the two groups of upper valve rods are fixedly connected through a linkage mechanism, one of the upper valve rods is provided with a handle, and the handle can synchronously drive the upper valve rod, the valve plates and the lower valve rods to synchronously link and open.

2. The double seat butterfly valve of claim 1, wherein the linkage mechanism comprises an active rod sleeve and a passive rod sleeve, the active rod sleeve is sleeved on one of the upper valve rods and fixedly connected to the upper valve rod, the passive rod sleeve is sleeved outside the other upper valve rod and fixedly connected to the upper valve rod, the active rod sleeve and the passive rod sleeve are movably and fixedly connected through a linkage bar, and the handle is fixed on the active rod sleeve.

3. The double-seat butterfly valve according to claim 2, wherein the driving rod sleeve comprises an inner rod sleeve and a limiting sleeve, two ends of the limiting sleeve are communicated, the bottom end of the limiting sleeve is fixedly connected with the valve body through a mounting seat, a limiting notch is formed in the upper end of the limiting sleeve, and the handle is arranged in the limiting notch and is fixedly connected with the inner rod sleeve; the upper end of the inner rod sleeve is provided with a pressing cap with the diameter larger than the outer diameter of the limiting sleeve, a first connecting block is arranged on one side of the pressing cap, a second connecting block with the angle equal to that of the first connecting block and the length equal to that of the first connecting block is arranged at the upper end of the driven rod sleeve, and two ends of the connecting strip are hinged with the first connecting block and the second connecting block to enable the driving rod sleeve and the driven rod sleeve to be synchronously linked.

4. The double seat butterfly valve according to claim 3, wherein a counter bore is provided on the inner stem sleeve, and a through hole is provided at the bottom of the counter bore; the side wall of the limiting sleeve at one end of the limiting notch is provided with a plurality of adjusting holes, the handle comprises a hand lever and a handle, one end of the hand lever is provided with an annular block, the annular block is provided with a bulge, the bulge can be arranged in the adjusting holes, the outer diameter of the annular block is matched with the inner diameter of the counter bore and is arranged in the counter bore, and the other end of the handle penetrates through the through hole to be arranged outside the inner lever sleeve and is fixedly connected with the handle; an adjusting spring is sleeved outside the handle, one end of the adjusting spring is arranged in the counter bore, the adjusting spring is pressed against the annular block, and the other end of the adjusting spring is pressed against the bottom of the counter bore.

5. A double seat butterfly valve according to claim 4, wherein a drain valve is provided in said valve body between said two sets of plates, said drain valve being secured to said valve body and communicating with said media flow path of said valve body; the driven rod sleeve is provided with a driving rod which can open the drain valve when the handle rotates to drive the valve plate to close the medium flow passage of the valve body.

6. A double seat butterfly valve according to claim 5, wherein the bleed valve comprises a valve seat having two ends communicating with each other, and a bleed pipe is provided on a side wall of the valve seat; the upper end of the valve seat is provided with a limiting step and a drainage block which is in movable sealing fit with the limiting step, the bottom of the drainage block is provided with a drainage spring, one end of the drainage spring is pressed against the drainage block, and the other end of the drainage spring is pressed against the valve body; a discharge hole is formed in the valve seat on the valve body, a piston rod is arranged in the discharge hole, the piston rod is fixedly connected with the discharge block, and the piston rod can open or block the discharge hole under the driving of the discharge block; the driving rod on the driven rod sleeve can drive the drainage block to drive the piston rod to open the drainage valve when the handle drives the valve plate to close the valve body medium flow passage.