CN211875132U

CN211875132U - Three-eccentric butterfly valve for preventing valve rod from rushing out of valve body

Info

Publication number: CN211875132U
Application number: CN202020510872.3U
Authority: CN
Inventors: 曹秋和; 占晓卫
Original assignee: Zhejiang Xujing Pump Valve Co ltd
Current assignee: Zhejiang Xujing Pump Valve Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-11-06
Anticipated expiration: 2030-04-09

Abstract

The utility model discloses a prevent that valve rod from rushing out triple offset butterfly valve of valve body, including valve body, butterfly plate, valve rod, its characterized in that: the valve rod comprises an upper end part, a middle end part and a lower end part, the upper end part is exposed out of the valve body, the butterfly plate is sleeved on the middle end part and is fixedly arranged with the valve rod, the valve rod further comprises an upper valve cover sleeved outside the upper end part and a lower valve cover arranged in an abutting connection with the tail end of the lower end part, and the lower valve cover is fixedly connected with the valve body through a bolt to block the large through hole; the utility model discloses simple structure, reasonable in design, the work of multilayer protection butterfly valve has avoided the valve rod drunkenness from top to bottom, and the condition of having avoided valve rod and butterfly plate to dash out the valve body takes place, has reduced danger, has effectively improved the utility model discloses a stability and security.

Description

Three-eccentric butterfly valve for preventing valve rod from rushing out of valve body

Technical Field

The utility model relates to the technical field of valves, more specifically say that it relates to a prevent that valve rod from rushing out three eccentric butterfly valve of valve body.

Background

At present, the existing butterfly valve is composed of a driving part and a body part, the work of a butterfly plate is generated by the rotation of a valve rod, when the torque of the driving part is too large, the problem of valve rod fracture is easily caused, the broken valve rod is rushed out of a valve body and enters a pipeline, the pipeline is broken, the safety hazard caused by medium leakage is caused, the broken valve rod is difficult to find, and the difficulty is increased for maintenance work; secondly, in the existing valve rod fixing mode, the valve rod is usually fixed in the valve body in a friction mode without the limitation of a fixed position, the valve rod can freely move to a certain extent and move up and down, once the valve rod is broken, the driving part is easy to separate from the valve rod to be punched out of the valve body, and if an operator is nearby, danger is easily caused.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a prevent that valve rod from rushing out three eccentric butterfly valve of valve body, the simple institutional advancement of application has effectively improved the utility model discloses a security and stability.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a prevent that valve rod from rushing out triple offset butterfly valve of valve body, includes valve body, butterfly plate, valve rod, its characterized in that: the valve rod penetrates through the valve body from the bottom of the valve body, the valve rod is arranged in a multi-end shaft mode and is sequentially arranged into an upper end portion, a middle end portion and a lower end portion from thin to thick, the middle end portion and the lower end portion are located in the valve body, a large through hole is formed in the insertion position of the valve body and the lower end portion, a small through hole is formed in the insertion position of the valve body and the middle end portion, the upper end portion penetrates through the small through hole to be exposed out of the valve body, the butterfly plate is sleeved and wrapped on the middle end portion located in a valve body channel, and the upper end face of the butterfly plate abuts against the;

the valve also comprises an upper valve cover sleeved outside the upper end part, and the end surface of the upper valve cover is abutted against the end surface of the middle end part; the valve body is characterized by further comprising a lower valve cover which is arranged at the tail end of the lower end portion in an abutting mode, and the lower valve cover is fixedly connected to the valve body through a bolt to block the large through hole.

As a further arrangement of the scheme, the butterfly plate and the valve rod can be fixed by adopting the spline-embedded rear valve body and the valve rod to clamp the upper end and the lower end of the butterfly plate, or can also be fixed by adopting a fixing pin.

As a further arrangement of the scheme, the diameter of the water outlet pipeline of the valve body is smaller than the outer diameters of the water inlet and the butterfly plate.

As a further arrangement of the scheme, the small through hole is provided with a sealing bush, and the large through hole is also provided with a sealing ring.

As a further arrangement of the scheme, a packing layer is arranged on the surface of the lower valve cover, which is abutted against the valve rod.

As a further arrangement of the scheme, the upper valve cover is connected to the valve body through bolts.

Through the setting of above-mentioned scheme, the utility model discloses butterfly valve when the installation, the valve rod is installed from the big hole of below to the top, and by upper end cover and lower extreme cooperation centre gripping, the butterfly plate is by valve body and valve rod cooperation centre gripping, realizes the basic function of valve, establishes the part that the cladding valve rod is located the medium passageway through the butterfly valve cover, can avoid rushing out the valve body when the valve rod is collapsed to be garrulous.

The utility model discloses simple structure, through the relation cooperation installation between multiterminal valve rod and valve body, the butterfly plate, effectively improved stability, avoided the valve rod problem of drunkenness from top to bottom in the valve body, when taking place the valve rod fracture, collapsing garrulous accident, the cover is established the piece that the butterfly plate of cladding on the valve rod can the at utmost prevent the valve rod and is rushed out the valve body and fall into the pipeline, simultaneously because the flow direction of medium is stable in the pipeline, secondly the utility model discloses the butterfly plate that sets up is less than the pipeline diameter of delivery port, has avoided losing the restriction of valve rod after, the butterfly plate is rushed out the valve body, the utility model discloses simple structure, reasonable in design, the work of multilayer protection butterfly valve has avoided drunkenness from top to bottom of valve rod, has avoided the condition that valve rod and butterfly plate rushed out the valve body to take place, has reduced danger.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is an enlarged schematic view of the present invention at A in FIG. 1;

fig. 3 is an enlarged schematic view of the present invention at B in fig. 1.

Reference numerals: 1. a valve body; 111. a small via hole; 112. a large via hole; 113. a seal bushing; 114. a seal ring; 14. an abutment; 2. a butterfly plate; 21. a filler layer; 3. a valve stem; 31. an upper end portion; 32. a middle end portion; 33. a lower end portion; 5. a lower valve cover; 6. an upper valve cover; 86. a water outlet; 87. a water inlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a three eccentric butterfly valve for preventing valve rod from rushing out of valve body, as shown in fig. 1-3, including valve body 1, butterfly plate 2, valve rod 3, its characterized in that: the valve rod 3 penetrates through the valve body 1 from the bottom of the valve body 1 to be arranged, the valve rod 3 is arranged in a multi-end shaft mode and is sequentially arranged into an upper end portion 31, a middle end portion 32 and a lower end portion 33 from thin to thick, the middle end portion 32 and the lower end portion 33 are located in the valve body 1, a large through hole 112 is formed in the insertion portion of the valve body 1 and the lower end portion 33, a small through hole 111 is formed in the insertion portion of the valve body 1 and the middle end portion 32, the upper end portion 31 penetrates through the small through hole 111 to be exposed out of the valve body 1, the butterfly plate 2 is sleeved and wrapped on the middle end portion 32 located in the channel of the valve body 1, and the upper end face of the butterfly plate abuts; the valve further comprises an upper valve cover 6 sleeved outside the upper end part 31, and the end surface of the upper valve cover 6 is abutted against the end surface of the middle end part 32;

the valve further comprises a lower valve cover 5 which is arranged at the tail end of the lower end part 33 in an abutting mode, and the lower valve cover 5 is fixedly connected to the valve body 1 through a bolt to block the large through hole 112.

As a further arrangement of the scheme, the fixing mode of the butterfly plate 2 and the valve rod 3 can adopt the spline jogged rear valve body 1 and the valve rod 3 to clamp the upper end and the lower end of the butterfly plate 2 for fixing, or can also adopt the mode of a fixing pin to fix the butterfly plate 2.

As a further arrangement of the above solution, the diameter of the pipeline of the water outlet 86 of the valve body 1 is smaller than the outer diameters of the water inlet 87 and the butterfly plate 2.

As a further arrangement of the above scheme, the small through hole 111 is provided with a sealing bush 113, and the large through hole 112 is further provided with a sealing ring 114.

As a further arrangement of the above arrangement, a packing layer 21 is provided on the surface of the lower bonnet 5 that abuts against the valve stem 3.

As a further arrangement of the above scheme, the upper bonnet 6 is connected to the valve body 1 by bolts.

Through the setting of above-mentioned scheme, the utility model discloses butterfly valve when the installation, valve rod 3 from the big hole 112 installation that crosses in below, by upper end cover 6 and the 5 cooperation centre grippings of lower extreme cover, butterfly plate 2 is by valve body 1 and the 3 cooperation centre grippings of valve rod, realizes the basic function of valve, establishes the part that cladding valve rod 3 is located the medium channel through 2 covers of butterfly plate, can avoid the valve rod piece to dash out valve body 1 when valve rod 3 is collapsed to be garrulous.

This scheme adopts the mode of fixed pin to fix 2 its processing of butterfly plate and preparation better convenience, but has increased the corrosion site of valve rod 3, leads to valve rod 3's life to be short partially, and adopts the spline gomphosis can make things convenient for being connected and work of butterfly plate 2 and valve rod 3, but the relative processing degree of difficulty can improve.

The utility model discloses the butterfly plate 2 that sets up is less than delivery port 87's pipeline diameter, has avoided losing the restriction back of valve rod 3, and butterfly plate 2 is washed out valve body 1, the utility model discloses simple structure, reasonable in design, the work of multilayer protection butterfly valve has avoided the play from top to bottom of valve rod 3, and the condition of having avoided valve rod 3 and butterfly plate 2 to wash out valve body 1 takes place, has reduced danger, has effectively improved the utility model discloses a stability and security.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a prevent that valve rod from rushing out triple offset butterfly valve of valve body, includes valve body (1), butterfly plate (2), valve rod (3), its characterized in that: the valve rod (3) penetrates through the valve body (1) from the bottom of the valve body (1) to be arranged, the valve rod (3) is multi-end shaft arranged and sequentially arranged into an upper end portion (31), a middle end portion (32) and a lower end portion (33) from thin to thick, the middle end portion (32) and the lower end portion (33) are located in the valve body (1), a large through hole (112) is formed in the insertion position of the valve body (1) and the lower end portion (33), a small through hole (111) is formed in the insertion position of the valve body (1) and the middle end portion (32), the upper end portion (31) penetrates through the small through hole (111) to be exposed out of the valve body (1), the butterfly plate (2) is sleeved and wraps the middle end portion (32) located in a channel of the valve body (1), and the upper end face of the butterfly plate abuts against the end face of the;

the valve further comprises an upper valve cover (6) sleeved outside the upper end part (31), and the end surface of the upper valve cover (6) is abutted against the end surface of the middle end part (32);

the valve is characterized by further comprising a lower valve cover (5) which is arranged at the tail end of the lower end portion (33) in an abutting mode, and the lower valve cover (5) is fixedly connected to the valve body (1) through a bolt to block the large through hole (112).

2. A triple offset butterfly valve in accordance with claim 1 wherein said valve stem is prevented from popping out of said valve body: the fixing mode of the butterfly plate (2) and the valve rod (3) can adopt spline jogged rear valve body (1) and the valve rod (3) to clamp the upper end and the lower end of the butterfly plate (2) for fixing, or can also adopt the mode of a fixing pin to fix the butterfly plate (2).

3. A triple offset butterfly valve in accordance with claim 2 wherein: the diameter of the pipeline of the water outlet (86) of the valve body (1) is smaller than the outer diameters of the water inlet (87) and the butterfly plate (2).

4. A triple offset butterfly valve in accordance with claim 3 wherein: the small through hole (111) is provided with a sealing bush (113), and the large through hole (112) is further provided with a sealing ring (114).

5. A triple offset butterfly valve in accordance with claim 4 wherein: and a packing layer (21) is arranged on the surface of the lower valve cover (5) which is abutted against the valve rod (3).

6. A triple offset butterfly valve in accordance with claim 5 wherein: the upper valve cover (6) is connected to the valve body (1) through bolts.