CN212226018U

CN212226018U - Three-eccentric butterfly valve

Info

Publication number: CN212226018U
Application number: CN202020758156.7U
Authority: CN
Inventors: 戴奔洋
Original assignee: Zhejiang Zhengfeng Valve Co ltd
Current assignee: Zhejiang Zhengfeng Valve Co ltd
Priority date: 2020-05-10
Filing date: 2020-05-10
Publication date: 2020-12-25
Anticipated expiration: 2030-05-10

Abstract

The utility model relates to the technical field of valve equipment, specifically disclose a three eccentric butterfly valve, including valve body and valve plate, the inside of valve body is provided with the valve plate, and is provided with lower axle sleeve and valve shaft in the inside of valve plate, the valve shaft is located directly over the lower axle sleeve, the outside symmetry of valve plate is provided with the bull stick, the outside of bull stick is provided with first rubber pad, the outside of first rubber pad is hugged closely on the inner wall of valve body, the outside fixed mounting of valve plate has sealing device, the inside of sealing device is provided with the sealing lantern ring, pass through sealing device fixed connection together between valve plate and the bull stick; the utility model discloses fixed connection sealing device between valve plate and bull stick to at the inside sealed lantern ring that is provided with of sealing device, can ensure to have good leakproofness between valve plate and the bull stick contact surface, avoid three eccentric butterfly valves to discover in the course of the work and leak, cause wasting of resources and environmental pollution, make three eccentric butterfly valves have zero leakage effect.

Description

Three-eccentric butterfly valve

Technical Field

The utility model relates to a valve equipment technical field specifically is a three eccentric butterfly valves.

Background

The triple eccentric butterfly valve is a valve with a valve rod axis simultaneously deviating from the center of a disc and the center of a body, and a valve seat rotation axis and a valve body channel axis having a certain angle, and hasThe device has the characteristics of compact structure, large caliber, quick opening and closing, light and convenient operation, reliable performance and the like. Triple eccentric butterfly valve widely used for medium temperature

The water-soluble polymer is used for regulating flow and carrying and breaking fluid on industrial pipelines of metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and the like at 425 ℃. The material is divided into: cast iron, cast steel, and stainless steel.

A three eccentric butterfly valve that prior art developed, a three eccentric butterfly valve like CN202867890U, this utility model is connected with valve plate and valve shaft spline, no pin connection has been adopted, the valve plate is independent separately with the valve shaft, the valve plate can carry out axial fine adjustment action, therefore the sealing ring can and keep suitable position between the valve body on the valve plate, do not receive the influence of temperature and valve shaft bottom stress, but it has following weak point in the use, the sealed effect of sealing ring is relatively poor, can not reach zero effect of leaking, lead to three eccentric butterfly valve to take place to leak in the course of the work easily, cause the wasting of resources and environmental pollution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three eccentric butterfly valves to solve the problem that proposes among the above-mentioned background art.

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

the utility model provides a three eccentric butterfly valve, includes valve body and valve plate, the inside of valve body is provided with the valve plate, and is provided with down axle sleeve and valve shaft in the inside of valve plate, the valve shaft is located under the axle sleeve directly over, the outside symmetry of valve plate is provided with the bull stick, the outside of bull stick is provided with first rubber pad, the outside of first rubber pad is hugged closely on the inner wall of valve body, the outside fixed mounting of valve plate has sealing device, be in the same place through sealing device fixed connection between valve plate and the bull stick.

As the utility model discloses scheme further still, sealing device's inside is provided with the sealed lantern ring, and is provided with seal ring in the inside of the sealed lantern ring, sealing device's intermediate position is provided with the inflation packing ring, sealing device's outside fixed mounting has the spud pile, first recess has been seted up to the bilateral symmetry of spud pile, and is provided with the screw thread on the internal surface of first recess.

As the utility model discloses scheme further still, the through-hole has been seted up for the position of first recess to the bull stick, be provided with the screw thread on the internal surface of through-hole, still be provided with first bolt on the bull stick, first bolt passes the through-hole to threaded connection is in first recess.

As the utility model discloses scheme further again, the second recess has been seted up to the intermediate position in the valve plate outside, and installs a plurality of sawtooth racks on the circumference of second recess inner wall in proper order, the end of bull stick is provided with the serrated wheel that matches with the sawtooth rack, the bull stick passes through the serrated wheel joint on the valve plate.

As the utility model discloses scheme further again, the bottom of valve shaft is provided with the butterfly plate, the valve plate passes through the butterfly plate and uses with the valve shaft cooperation, the third recess has been seted up to the intermediate position in the bull stick outside, and hugs closely on the inner wall of third recess and be provided with the second rubber pad.

As the utility model discloses scheme further again, the outside of valve shaft is provided with the axle sleeve, and is provided with the packing box at the surface of axle sleeve, the inside packing of packing box has the filler, the outside of packing box is provided with gland, be provided with the second bolt on the gland to fix gland on the lateral wall of valve body through the second bolt.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses fixed connection sealing device between valve plate and bull stick to at the inside sealed lantern ring that is provided with of sealing device, can ensure to have good leakproofness between valve plate and the bull stick contact surface, avoid three eccentric butterfly valves to discover in the course of the work and leak, cause wasting of resources and environmental pollution, make three eccentric butterfly valves have zero leakage effect.

Drawings

FIG. 1 is a schematic structural diagram of a triple offset butterfly valve;

FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of a portion of the structure at B in FIG. 1;

fig. 4 is an enlarged view of a portion of the structure at C in fig. 2.

In the figure: 1. a valve body; 2. a valve plate; 201. a groove; 202. a sawtooth strip; 3. a lower shaft sleeve; 4. a valve shaft; 5. a rotating rod; 501. a first rubber pad; 502. a through hole; 503. a first bolt; 504. a third groove; 505. a second rubber pad; 6. a sealing device; 601. a sealing collar; 602. a sealing gasket; 603. an expansion washer; 7. fixing the pile; 701. a first groove; 8. a serrated wheel; 9. a butterfly plate; 10. a shaft sleeve; 11. a stuffing box; 12. a filler; 13. a packing gland; 14. and a second bolt.

Detailed Description

Referring to fig. 1-4, in an embodiment of the present invention, a triple offset butterfly valve includes a valve body 1 and a valve plate 2, the valve plate 2 is disposed inside the valve body 1, and a lower shaft sleeve 3 and a valve shaft 4 are arranged in the valve plate 2, the valve shaft 4 is positioned right above the lower shaft sleeve 3, the outer part of the valve plate 2 is symmetrically provided with a rotating rod 5, the outer side of the rotating rod 5 is provided with a first rubber pad 501, the outer side of the first rubber pad 501 is tightly attached to the inner wall of the valve body 1, the first rubber pad 501 can further improve the sealing performance of the valve plate 2, meanwhile, the first rubber pad 501 can prevent the rotating rod 5 from directly contacting the inner wall of the valve body 1, which causes abrasion consumption of the rotating rod 5 in different degrees in the rotating process, further prolongs the service life of the rotating rod 5, and a sealing device 6 is fixedly arranged on the outer side of the valve plate 2, and the valve plate 2 and the rotating rod 5 are fixedly connected together through the sealing device 6.

In fig. 1, 2 and 4, the inside of sealing device 6 is provided with a sealing sleeve ring 601, and a sealing washer 602 is arranged inside the sealing sleeve ring 601, an expansion washer 603 is arranged at the middle position of sealing device 6, so that good sealing performance between the contact surfaces of valve plate 2 and rotating rod 5 can be ensured, leakage of a triple eccentric butterfly valve in the working process is avoided, resource waste and environmental pollution are caused, and zero leakage effect is achieved for the triple eccentric butterfly valve, a fixing pile 7 is fixedly arranged on the outer side of sealing device 6, first grooves 701 are symmetrically formed in two sides of fixing pile 7, and threads are arranged on the inner surface of first groove 701.

In fig. 1 and 2, a through hole 502 is formed in the position of the rotating rod 5 relative to the first groove 701, a thread is formed on the inner surface of the through hole 502, a first bolt 503 is further arranged on the rotating rod 5, the first bolt 503 penetrates through the through hole 502 and is connected to the first groove 701 in a threaded manner, the rotating rod 5 can be better fixed on the sealing device 6, the rotating stability of the rotating rod 5 is further improved, the normal operation of the triple offset butterfly valve is ensured, meanwhile, the first bolt 503 can be loosened periodically, the rotating rod 5 is taken off from the sealing device 6, a new sealing collar 601, a new sealing washer 602 and a new expansion washer 603 are replaced and installed, the whole sealing device 6 is ensured to have good sealing performance all the time, and the service life of the triple offset butterfly valve is further prolonged.

In fig. 1, fig. 2 and fig. 4, second recess 201 has been seted up to the intermediate position in the valve plate 2 outside, and installs a plurality of sawtooth racks 202 on the circumference of second recess 201 inner wall in proper order, the end of bull stick 5 is provided with the sawtooth wheel 8 that matches with sawtooth rack 202, bull stick 5 passes through sawtooth wheel 8 joint on valve plate 2, can improve bull stick 5 pivoted stability, ensures that three eccentric butterfly valve can normally work, and simultaneously, when repetitious usage bull stick 5 rotated, different degree's wearing and tearing consumption can take place for first rubber pad 501, and bull stick 5 and valve plate 2's joint is convenient for the staff and is replaced and install new first rubber pad 501.

In fig. 1 and 2, a butterfly plate 9 is disposed at the bottom of the valve shaft 4, the valve plate 2 is used in cooperation with the valve shaft 4 through the butterfly plate 9, a third groove 504 is disposed at the middle position of the outer side of the rotating rod 5, and a second rubber pad 505 is disposed on the inner wall of the third groove 504 in a close-fitting manner, when a triple eccentric butterfly valve needs to be opened, a worker inserts the handle into the third groove 504 to rotate the handle clockwise, so that the rotating rod 5 rotates clockwise to drive the valve plate 2 to rotate clockwise, thereby realizing the conduction operation of the triple eccentric butterfly valve, when the triple eccentric butterfly valve needs to be closed, the worker inserts the handle into the third groove 504 again to rotate the handle counterclockwise, so that the rotating rod 5 rotates counterclockwise to drive the valve plate 2 to rotate counterclockwise to close the triple eccentric valve, and meanwhile, the second rubber pad 505 has a certain flexibility, so that the handle and the third groove 504 can be connected more tightly, ensure at the pivoted in-process, the handle can not drop, improved staff's stability of operating, ensure that three eccentric butterfly valve can normally work, second rubber pad 505 can avoid the handle and the direct contact of third recess 504, avoid in the long-time course of operation of handle, cause third recess 504 to take place certain wearing and tearing to consume, influence the follow-up use of bull stick 5, improved the life of bull stick 5.

In fig. 1 and 3, a shaft sleeve 10 is arranged outside the valve shaft 4, a stuffing box 11 is arranged on the outer surface of the shaft sleeve 10, stuffing 12 is filled in the stuffing box 11, a stuffing cover 13 is arranged outside the stuffing box 11, a second bolt 14 is arranged on the stuffing cover 13, the stuffing cover 13 is fixed on the side wall of the valve body 1 through the second bolt 14, good sealing performance between the valve body 1 and the valve shaft 4 can be ensured through the stuffing 12, and the stuffing cover 13 can compress the stuffing 12.

Claims

1. The utility model provides a three eccentric butterfly valve, includes valve body (1) and valve plate (2), its characterized in that, the inside of valve body (1) is provided with valve plate (2), and is provided with down axle sleeve (3) and valve shaft (4) in the inside of valve plate (2), valve shaft (4) are located under axle sleeve (3) directly over, the outside symmetry of valve plate (2) is provided with bull stick (5), the outside of bull stick (5) is provided with first rubber pad (501), hug closely on the inner wall of valve body (1) in the outside of first rubber pad (501), the outside fixed mounting of valve plate (2) has sealing device (6), be in the same place through sealing device (6) fixed connection between valve plate (2) and bull stick (5).

2. A triple offset butterfly valve according to claim 1, wherein a sealing collar (601) is provided inside the sealing device (6), a sealing washer (602) is provided inside the sealing collar (601), an expansion washer (603) is provided in the middle of the sealing device (6), a fixing pile (7) is fixedly installed outside the sealing device (6), first grooves (701) are symmetrically formed on two sides of the fixing pile (7), and threads are provided on the inner surface of the first grooves (701).

3. A triple offset butterfly valve according to claim 1, wherein the rotating rod (5) has a through hole (502) formed at a position corresponding to the first groove (701), the through hole (502) has threads formed on an inner surface thereof, the rotating rod (5) further has a first bolt (503), and the first bolt (503) passes through the through hole (502) and is screwed into the first groove (701).

4. The triple offset butterfly valve according to claim 1, wherein a second groove (201) is formed in the middle of the outer side of the valve plate (2), a plurality of sawtooth racks (202) are sequentially installed on the circumference of the inner wall of the second groove (201), a sawtooth wheel (8) matched with the sawtooth racks (202) is arranged at the tail end of the rotating rod (5), and the rotating rod (5) is clamped on the valve plate (2) through the sawtooth wheel (8).

5. The triple offset butterfly valve according to claim 1, wherein a butterfly plate (9) is disposed at the bottom of the valve shaft (4), the valve plate (2) is used in cooperation with the valve shaft (4) through the butterfly plate (9), a third groove (504) is formed in the middle of the outer side of the rotating rod (5), and a second rubber pad (505) is disposed on the inner wall of the third groove (504) in a close fit manner.

6. A triple offset butterfly valve according to claim 1, characterized in that a shaft sleeve (10) is provided outside the valve shaft (4), a stuffing box (11) is provided on the outer surface of the shaft sleeve (10), the stuffing box (11) is filled with stuffing (12), a stuffing cover (13) is provided outside the stuffing box (11), a second bolt (14) is provided on the stuffing cover (13), and the stuffing cover (13) is fixed on the side wall of the valve body (1) by the second bolt (14).