CN216951706U

CN216951706U - Track butterfly valve

Info

Publication number: CN216951706U
Application number: CN202220118844.6U
Authority: CN
Inventors: 尹建敏; 王焕彩; 黄政洲; 黄云平
Original assignee: Zhengzhou Pump Valve Manufacturing Co ltd
Current assignee: Zhengzhou Pump Valve Manufacturing Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-07-12
Anticipated expiration: 2032-01-17

Abstract

The utility model discloses a track butterfly valve, which comprises a valve body and a fluid passage arranged in the valve body, wherein a valve rod penetrating into the fluid passage is arranged in the valve body, a butterfly plate is arranged on the valve rod, an executing mechanism for driving the valve rod to rotate is arranged on the valve body, a pressure relief hole is formed in the butterfly plate along the fluid conveying direction, a sealing element for sealing the pressure relief hole is arranged on the outer wall of the valve rod, the pressure relief hole is opened or closed by the sealing element along with the rotation of the valve rod, and the butterfly plate can be driven to rotate to open or close the fluid passage after the valve rod rotates for a certain angle; the butterfly valve can reduce the valve opening moment, and the butterfly plate can be opened easily due to partial pressure relief during opening.

Description

Track butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to a track butterfly valve.

Background

The butterfly valve is a valve which uses a circular butterfly plate as an opening and closing piece and rotates along with a valve rod to open, close and adjust a fluid passage. The butterfly plate of the butterfly valve is installed in the diameter direction of a pipeline, in a cylindrical channel of a valve body of the butterfly valve, the disc-shaped butterfly plate rotates around the axis of the valve rod, the rotating angle ranges from 0 degrees to 90 degrees, the valve is closed when the butterfly plate is located at 0 degrees, and the valve is completely opened when the butterfly plate is located at 90 degrees. The existing butterfly valve mainly comprises a valve body, a valve rod and a butterfly plate, wherein a valve seat is arranged in the valve body, the butterfly plate is fixed with the valve rod, the valve rod is radially arranged in the valve body and can rotate, and the butterfly plate can be matched with the valve seat and sealed.

Patent CN201120091363.2 discloses a track double plate butterfly valve, has mainly solved current general butterfly valve and has opened hard and the huge problem of structure, all be equipped with the helicla flute on the outer wall of going up valve rod and lower valve rod, be fixed with the track round pin that the helicla flute was arranged in to the tip on valve body (1), the lower extreme of going up the valve rod is equipped with eccentric cone, and the upper end of lower valve rod is equipped with down eccentric cone, the eccentric opposite direction of last eccentric cone and lower eccentric cone, go up through connecting rod rigid connection between valve rod and the lower valve rod, be equipped with respectively with last eccentric cone and the corresponding last taper hole of lower eccentric cone and lower taper hole on the butterfly plate. The track double-plate butterfly valve has the characteristics of simple structure and labor saving in opening, and meanwhile, pressure relief-free maintenance or replacement of the sealing ring is realized.

The existing track butterfly valve does not have a pressure relief function, and the resistance of fluid is large when the valve is opened, so that an improvement space exists.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a track butterfly valve.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a track butterfly valve, includes the valve body and sets up the fluid passage in the valve body, install the valve rod of wearing to establish fluid passage in the valve body, be provided with the butterfly plate on the valve rod, be provided with on the valve body and be used for driving valve rod pivoted actuating mechanism, the pressure release hole has been seted up along the fluid circulation direction to the butterfly plate, valve rod outer wall is provided with the sealing member that is used for sealing the pressure release hole, the valve rod rotates relatively with the butterfly plate and can drive the butterfly plate rotation after the rotatory certain angle of valve rod and open or close fluid passage, the sealing member is opened or is closed the pressure release hole at the rotation in-process of valve rod, when the butterfly plate opens the valve body runner the sealing member is relieved to the pressure release hole, when the butterfly plate closes the valve body runner the sealing member seals the pressure release hole.

As a preferred technical scheme of the utility model, the outer wall of the valve rod is provided with a spiral groove, the valve body is fixed with a track pin with an end part arranged in the spiral groove, the valve rod can move in a certain distance in the vertical direction, the butterfly plate can be driven to rotate to open or close the fluid channel after the valve rod rises or falls for a certain distance, and the valve rod can drive the sealing element to rise and fall in the process of rising and falling so as to release or open the pressure relief hole.

As a preferable technical scheme of the utility model, the butterfly plate is provided with a through hole for the valve rod to pass through and a movable groove for the sealing element to move, and the position of the movable groove corresponds to that of the pressure relief hole.

As a preferred technical scheme of the utility model, the spiral groove comprises a spiral section arranged on the outer wall of the valve rod and an annular section connected with the spiral section, the movable path of the track pin can drive the valve rod to ascend and descend in the spiral section, and the movable path of the track pin can enable the valve rod to rotate in situ and drive the butterfly plate to open or close the valve body flow passage in the annular section.

As a preferable technical scheme of the utility model, the sealing element is a cone, the diameter of the upper end of the sealing element is larger than that of the lower end of the sealing element, and the shape of the movable groove is matched with that of the sealing element.

As a preferable technical scheme of the utility model, one side of the butterfly plate is provided with a sealing ring and a pressing plate, the periphery of one side of the butterfly plate, which is far away from the valve rod, is provided with an annular groove, the middle part of the butterfly plate correspondingly forms an installation part, the sealing ring is sleeved on the installation part, and the pressing plate fixedly connects the sealing ring to the butterfly plate through a bolt.

Compared with the prior art, the utility model has the beneficial effects that: through setting up sealing member cooperation pressure release hole, make the butterfly plate carry out local pressure release before opening, reduce the moment of opening the valve, can easily open the track butterfly valve.

Drawings

FIG. 1 is a sectional view of the present embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is an enlarged view of a portion B of fig. 1.

Reference numerals: 1. a valve body; 2. a fluid channel; 3. a valve stem; 4. a butterfly plate; 5. an actuator; 6. a pressure relief vent; 7. a seal member; 8. a helical groove; 9. a track pin; 10. a through hole; 11. a movable groove; 12. a helical section; 13. an annular segment; 14. a seal ring; 15. pressing a plate; 16. an annular groove; 17. a mounting portion.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

A rail butterfly valve as shown in fig. 1 to 3, comprising a valve body 1 and a fluid passage 2 provided in the valve body 1, a valve rod 3 which is arranged in the fluid channel 2 in a penetrating way is arranged in the valve body 1, a butterfly plate 4 is arranged on the valve rod 3, the valve body 1 is provided with an actuating mechanism 5 for driving the valve rod 3 to rotate, the butterfly plate 4 is provided with a pressure relief hole 6 along the fluid flowing direction, a sealing element 7 for sealing the pressure relief hole 6 is arranged on the outer wall of the valve rod 3, the valve rod 3 and the butterfly plate 4 rotate relatively, the butterfly plate 4 can be driven to rotate synchronously after the valve rod 3 rotates for a certain angle, so that the fluid channel is opened or closed, the sealing element 7 opens or closes the pressure relief hole 6 in the rotating process of the valve rod 3, when the butterfly plate 4 opens the valve body flow passage 5, the sealing element 7 releases the sealing of the pressure relief hole 6, and when the butterfly plate 4 closes the valve body flow passage 5, the sealing element 7 seals the pressure relief hole 6.

Through setting up sealing member 7 cooperation pressure release hole 6, make butterfly plate 4 carry out local pressure release before opening, reduce the moment of opening the valve, can easily open the track butterfly valve.

The outer wall of the valve rod 3 is provided with a spiral groove 8, a track pin 9 with the end part arranged in the spiral groove 8 is fixed on the valve body 1, the valve rod 3 can move in a certain distance in the vertical direction, the butterfly plate 4 can be driven to rotate to open or close the fluid channel 2 after the valve rod 3 rises or falls in a certain distance, and the valve rod 3 can drive the sealing element 7 to lift in the lifting process so as to release or open the pressure relief hole 6.

The butterfly plate 4 is provided with a through hole 10 for the valve rod 3 to pass through and a movable groove 11 for the sealing element 7 to move, and the position of the movable groove 11 corresponds to the position of the pressure relief hole 6.

The spiral groove 8 comprises a spiral section 12 arranged on the outer wall of the valve rod 3 and an annular section 13 connected with the spiral section 12, the movable path of the track pin 9 can drive the valve rod 3 to ascend and descend in the spiral section 12, and the movable path of the track pin 9 can enable the valve rod 3 to rotate in place and drive the butterfly plate 4 to open or close the flow channel of the valve body 1 in the annular section 13.

The sealing element 7 is conical, the diameter of the upper end of the sealing element 7 is larger than that of the lower end of the sealing element, and the shape of the movable groove 11 is matched with that of the sealing element 7.

One side of butterfly plate 4 is provided with sealing washer 14 and clamp plate 15, one side periphery that valve rod 3 was kept away from to butterfly plate 4 is provided with ring channel 16 and the middle part corresponds and forms installation department 17, installation department 17 is located to sealing washer 14 cover, clamp plate 15 is through bolt with sealing washer 14 fixed connection in butterfly plate 4.

The working principle and the using process are as follows: when the track butterfly valve is opened, the butterfly plate 4 has large moment under the action of sealing force and medium, the guide pin groove is limited by the guide pin when the valve rod 3 rotates, so that the valve rod 3 is lifted for a certain distance along the vertical direction, meanwhile, the sealing element 7 is driven to move upwards, the pressure relief hole 6 is opened at the moment, the medium is subjected to local pressure relief through the pressure relief hole, and the track butterfly valve can be easily opened under the working condition of no pressure or reduced pressure; when the valve is closed, the actuator drives the valve rod 3 to rotate, the guide pin groove is limited under the guide pin, the valve rod 3 moves downwards for a certain distance along the vertical direction, meanwhile, the sealing element 7 is driven downwards, the sealing element 7 seals the pressure relief hole 6 at the moment, the butterfly plate 4 is pushed to move forwards, the sealing ring 14 is tightly matched with the valve seat to achieve sealing, the sealing element 7 downwards blocks the pressure relief hole 6 of the butterfly plate 4, and the track butterfly valve is completely sealed to achieve zero leakage.

While there have been shown and described what are at present considered to be the fundamental principles of the utility model, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, but is only preferred embodiments of the utility model and is not intended to limit the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a track butterfly valve, includes the valve body and sets up the fluid passage in the valve body, install in the valve body and wear to establish fluid passage's valve rod, be provided with the butterfly plate on the valve rod, be provided with on the valve body and be used for driving valve rod pivoted actuating mechanism, its characterized in that: the butterfly plate has been seted up the pressure release hole along the fluid circulation direction, the valve rod outer wall is provided with the sealing member that is used for sealing the pressure release hole, the valve rod rotates with the butterfly plate relatively and can drive the butterfly plate rotation after the rotatory certain angle of valve rod and open or close fluid passage, the pressure release hole is opened or closed at the rotation in-process of valve rod to the sealing member, when the butterfly plate opens the valve body runner the sealing member is relieved to the pressure release hole, when the butterfly plate closed the valve body runner the sealing member seals the pressure release hole.

2. The rail butterfly valve of claim 1, wherein: the outer wall of the valve rod is provided with a spiral groove, a track pin with the end part arranged in the spiral groove is fixed on the valve body, the valve rod can move in a certain distance in the vertical direction, the butterfly plate can be driven to rotate to open or close the fluid channel after the valve rod rises or falls by a certain distance, and the valve rod can drive the sealing element to lift in the lifting process to remove or open the pressure relief hole.

3. The track butterfly valve of claim 2, wherein: the butterfly plate is provided with a through hole for the valve rod to pass through and a movable groove for the sealing element to move, and the movable groove corresponds to the pressure relief hole.

4. The track butterfly valve of claim 2, wherein: the spiral groove comprises a spiral section arranged on the outer wall of the valve rod and an annular section connected with the spiral section, the movable path of the track pin can drive the valve rod to lift when in the spiral section, and the movable path of the track pin can enable the valve rod to rotate in situ and drive the butterfly plate to open or close the valve body flow passage when in the annular section.

5. The track butterfly valve of claim 3, wherein: the sealing element is a cone, the diameter of the upper end of the sealing element is larger than that of the lower end of the sealing element, and the shape of the movable groove is matched with that of the sealing element.

6. The track butterfly valve of claim 1, wherein: one side of butterfly plate is provided with sealing washer and clamp plate, the one side periphery that the valve rod was kept away from to the butterfly plate is provided with ring channel and middle part and corresponds and form the installation department, the installation department is located to the sealing washer cover, the clamp plate passes through the bolt with sealing washer fixed connection in butterfly plate.