CN213117527U

CN213117527U - Pneumatic butt-clamping soft sealing butterfly valve

Info

Publication number: CN213117527U
Application number: CN202022054894.6U
Authority: CN
Inventors: 周军
Original assignee: Jiangsu Kayi Valve Manufacturing Co ltd
Current assignee: Jiangsu Kayi Valve Manufacturing Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-05-04
Anticipated expiration: 2030-09-18

Abstract

The utility model discloses a pneumatic soft sealing butterfly valve that presss from both sides, including valve body and seal cover, the equal shaping in valve body both ends has flange, the last circumference equipartition of flange has the connecting hole, it has to bond on the valve body inner wall the seal cover, the via hole has been seted up to the seal cover top, be located on the seal cover inner wall the equal shaping in via hole both sides has sealed separation blade, two sealed separation blade with the axis symmetry setting of via hole. Has the advantages that: the utility model discloses an at the inside sealed separation blade that sets up of seal cover, can rotate when the position of damming at rotatory video disc, can seal through the periphery of sealed separation blade pairing rotation video disc and damming, can improve this sealed rotatory video disc greatly and at the sealing performance who dampens the position, and then increase of service life, the setting of installation pipe, spliced eye and convex key on the rotatory video disc can be through taking the valve rod out, and the pairing rotation video disc carries out quick change, easy operation, and it is convenient to change, extremely practical.

Description

Pneumatic butt-clamping soft sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field, more specifically say, it relates to a pneumatic butt clamp soft seal butterfly valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve with a closing part (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close, and 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.

However, in the use process of the existing butterfly valve, the sealing effect of the rotating disc and the rotating part of the valve body is poor, so that the service life of the butterfly valve is shortened, meanwhile, the rotating disc and the valve rod are mostly connected through screws, the replacement is inconvenient, a sealing assembly is mostly arranged on the periphery of the valve rod for sealing, the sealing effect is poor, and fluid is easy to leak from the rod part of the valve rod.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a pneumatic soft sealing butterfly valve of double-layered, it has sealed effectual, the convenient and characteristics of antiseep are changed to rotatory video disc.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pneumatic butt clamp soft seal butterfly valve, includes valve body and seal cover, the equal shaping of valve body both ends has flange, the last circumference equipartition of flange has the connecting hole, it has to bond on the valve body inner wall the seal cover, the via hole has been seted up to the seal cover top, be located on the seal cover inner wall the equal shaping in via hole both sides has sealed separation blade, two sealed separation blade with the axis symmetry setting of via hole.

By adopting the technical scheme, when the rotary disc rotates to the closure position, the periphery of the rotary disc can be sealed and closed by the sealing separation blade, so that the sealing performance of the sealed rotary disc at the closure position can be greatly improved, and the service life is further prolonged.

Further, a fixing seat is welded above the valve body, a pneumatic actuator is connected above the fixing seat through a bolt, a valve rod is rotatably connected inside the fixing seat, and the valve rod is connected with the pneumatic actuator through a screw.

By adopting the technical scheme, the valve rod can be controlled to rotate by the pneumatic actuator.

Furthermore, the valve rod is connected with a rotary disc after penetrating through the via hole, and the rotary disc comprises an installation pipe, a plug hole formed in the installation pipe and a convex key formed on the inner wall of the plug hole.

By adopting the technical scheme, the valve rod can be pulled out, and the rotating disc can be rapidly replaced, so that the valve is simple to operate, convenient to replace and extremely practical.

Further, the valve rod is connected with the sealing sleeve in a rotating and sealing mode, and the valve rod is connected with the rotating disc through the convex key.

By adopting the technical scheme, the sealing sleeve can be used for sealing the periphery of the valve rod.

Furthermore, the valve body is located a sealing groove is formed in the periphery of the valve rod, an O-shaped sealing ring is arranged inside the sealing groove, and the O-shaped sealing ring is connected with the sealing groove in a clamping and pressing mode.

By adopting the technical scheme, the O-shaped sealing ring can further seal the contact part of the valve rod and the valve body, the sealing effect of the periphery of the valve rod can be greatly improved, and the leakage probability of the fluid from the valve rod is greatly reduced.

Furthermore, trapezoidal sealing clamping grooves are formed in two end portions of the valve body, and trapezoidal sealing rings are bonded inside the T-shaped sealing clamping grooves for searching books.

By adopting the technical scheme, the trapezoidal sealing ring can seal the connecting part of the butterfly valve and an external pipeline.

To sum up, the utility model discloses following beneficial effect has:

1. the sealing separation blade is arranged in the sealing sleeve, so that when the rotating disc rotates to the intercepting position, the periphery of the rotating disc can be sealed and intercepted through the sealing separation blade, the sealing performance of the sealing rotating disc at the intercepting position can be greatly improved, and the service life is further prolonged;

2. the arrangement of the pipe, the inserting hole and the convex key on the rotary disk of the utility model can rapidly change the rotary disk by drawing out the valve rod, and the operation is simple and the change is convenient;

3. the utility model discloses a set up O type sealing washer and seal cover and carry out dual rotation seal to the valve rod, can improve the outlying sealed effect of valve rod greatly, the probability that greatly reduced fluid leaked from the valve rod.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural diagram of a rotating disk of the present invention;

FIG. 3 is an enlarged view of a portion of the key shown in FIG. 2 according to the present invention;

fig. 4 is a left side sectional view of the present invention;

fig. 5 is a sectional structure view of the middle sealing sleeve of the present invention.

In the figure:

1. a pneumatic actuator; 2. a fixed seat; 3. a valve body; 4. connecting holes; 5. rotating the disc; 501. installing a pipe; 502. inserting holes; 503. a convex key; 6. sealing sleeves; 7. a trapezoidal sealing ring; 8. a valve stem; 9. a via hole; 10. sealing the baffle plate; 11. a sealing groove; 12. an O-shaped sealing ring.

Detailed Description

The present invention will be described in further detail with reference to fig. 1 to 5.

Referring to fig. 1-5, the utility model provides a technical solution: the utility model provides a pneumatic butt clamp soft seal butterfly valve, as figure 1, figure 4 and figure 5 are shown, including valve body 3 and

seal cover

6, 3 both ends of valve body all the shaping has flange, the circumference equipartition has connecting hole 4 on the flange, it has seal cover 6 to bond on 3 inner walls of valve body, via hole 9 has been seted up to 6 tops of seal cover, it has sealing separation blade 10 to lie in the equal shaping in via hole 9 both sides on 6 inner walls of seal cover, two sealing separation blade 10 set up with the axis symmetry of via hole 9, can rotate when damming the position at rotatory video disc 5, can seal through sealing separation blade 10 to the periphery of rotation video disc 5 and damming, can improve this sealing performance of sealed rotatory video disc 5 at the position of damming greatly, and then increase of.

Referring to fig. 1-4, a fixing seat 2 is welded above a valve body 3, a pneumatic actuator 1 is connected above the fixing seat 2 through a bolt, a valve rod 8 is connected inside the fixing seat 2 in a rotating mode, the valve rod 8 is connected with the pneumatic actuator 1 through a bolt, the valve rod 8 can be controlled to rotate through the pneumatic actuator 1, a rotating disc 5 is connected after passing through a hole 9, the rotating disc 5 comprises an installation pipe 501, a jack 502 formed on the installation pipe 501 and a convex key 503 formed on the inner wall of the jack 502, the valve rod 8 can be drawn out, and the rotating disc 5 can be rapidly replaced.

Referring to fig. 1-4, the valve rod 8 is connected with the sealing sleeve 6 in a rotating and sealing manner, the valve rod 8 is connected with the rotating disc 5 through a convex key 503, and the sealing can be performed on the periphery of the valve rod 8 through the sealing sleeve 6.

Referring to fig. 4, a sealing groove 11 is formed in the valve body 3 and located at the periphery of the valve rod 8, an O-shaped sealing ring 12 is arranged inside the sealing groove 11, the O-shaped sealing ring 12 is connected with the sealing groove 11 in a clamping and pressing mode, the contact position of the valve rod 8 and the valve body 3 can be further sealed through the O-shaped sealing ring 12, the sealing effect of the periphery of the valve rod 8 can be greatly improved, and the leakage probability of fluid from the valve rod 8 is greatly reduced.

Referring to fig. 1 and 4, trapezoidal sealing grooves are formed at two end portions of the valve body 3, trapezoidal sealing rings 7 are bonded inside the T-shaped sealing grooves for searching books, and the trapezoidal sealing rings 7 can seal the connection portion of the butterfly valve and an external pipeline.

The working principle is as follows: when the sealing butterfly valve is used, the sealing butterfly valve can be connected with an external pipeline through a connecting hole 4 on a connecting flange, meanwhile, a pneumatic actuator 1 is connected with an external circuit, a valve rod 8 can be controlled to rotate through the pneumatic actuator 1, and then the rotating disc 5 is driven to rotate, so that the butterfly valve can be opened and closed, through arranging the sealing separation blade 10 in the sealing sleeve 6, when the rotating disc 5 rotates to a cut-off position, the periphery of the rotating disc 5 can be sealed and cut off through the sealing separation blade 10, the sealing performance of the sealing rotating disc 5 at the cut-off position can be greatly improved, the service life is further prolonged, the rotating disc 5 is provided with the pipe 501, the inserting hole 502 and the convex key 503, the rotating disc 5 can be rapidly replaced by drawing out the valve rod 8, the operation is simple, the replacement is convenient, the sealing butterfly valve is extremely practical, the valve rod 8 is sealed through the double rotation of the O, the sealing effect of the periphery of the valve rod 8 can be greatly improved, and the probability of fluid leakage from the valve rod 8 is greatly reduced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a pneumatic butt clamp soft seal butterfly valve, includes valve body (3) and seal cover (6), its characterized in that: the valve body (3) both ends all the shaping have flange, flange goes up the circumference equipartition and has connecting hole (4), it has to bond on valve body (3) inner wall seal cover (6), via hole (9) have been seted up to seal cover (6) top, lie in on seal cover (6) inner wall via hole (9) both sides all the shaping have sealing separation blade (10), two sealing separation blade (10) with the axis symmetry setting of via hole (9).

2. The pneumatic butt-clamping soft seal butterfly valve according to claim 1, characterized in that: the valve body (3) top welding has fixing base (2), there is pneumatic actuator (1) fixing base (2) top through bolted connection, fixing base (2) inside is rotated and is connected with valve rod (8), valve rod (8) with pneumatic actuator (1) passes through the screw connection.

3. The pneumatic butt-clamping soft seal butterfly valve according to claim 2, wherein: the valve rod (8) penetrates through the through hole (9) and then is connected with a rotary disc (5), and the rotary disc (5) comprises an installation pipe (501), an insertion hole (502) formed in the installation pipe (501) and a convex key (503) formed in the inner wall of the insertion hole (502).

4. The pneumatic butt-clamping soft seal butterfly valve according to claim 3, wherein: the valve rod (8) is connected with the sealing sleeve (6) in a rotating and sealing mode, and the valve rod (8) is connected with the rotating disc (5) through the convex key (503).

5. The pneumatic butt-clamping soft seal butterfly valve according to claim 4, wherein: the valve body (3) is located the peripheral shaping of valve rod (8) has seal groove (11), seal groove (11) inside is provided with O type sealing washer (12), O type sealing washer (12) with seal groove (11) are connected through the card pressure mode.

6. The pneumatic butt-clamping soft seal butterfly valve according to claim 5, wherein: trapezoidal sealing clamping grooves are formed in two end portions of the valve body (3), and trapezoidal sealing rings (7) are bonded inside the T-shaped sealing clamping grooves for searching books.