CN215334529U

CN215334529U - Anti-clamping stagnation three-eccentric butterfly valve

Info

Publication number: CN215334529U
Application number: CN202121508196.7U
Authority: CN
Inventors: 丁远茂; 张晓东; 陈龙; 吕东; 韩品
Original assignee: Baoyi Group Co ltd
Current assignee: Baoyi Group Co ltd
Priority date: 2021-07-03
Filing date: 2021-07-03
Publication date: 2021-12-28
Anticipated expiration: 2031-07-03

Abstract

The utility model belongs to the technical field of valves, and particularly relates to an anti-clamping triple eccentric butterfly valve. According to the anti-clamping triple eccentric butterfly valve structure, the dustproof positioning components with specific structures are arranged at the upper end and the lower end of the butterfly plate, so that positioning and dust prevention are realized, the problem that the butterfly plate and the valve rod are easy to move up and down due to gravity is solved, and the problems that a sealing surface of the triple eccentric butterfly valve is easy to scab by dust and high-viscosity media in severe working conditions such as high dust, easy scabbing and the like, so that the sealing surface of the butterfly plate is clamped with a valve seat, and even a sealing pair is damaged can be solved. The service life of the valve is prolonged, the use cost is greatly reduced, and the application range of the triple eccentric butterfly valve is expanded.

Description

Anti-clamping stagnation three-eccentric butterfly valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to an anti-clamping triple eccentric butterfly valve.

Background

At present, particularly in working conditions of dust, easy scabbing, high viscosity and corrosiveness, a shaft sleeve is easy to scab, block, corrode and the like by using a medium with the dust and the high viscosity, so that the shaft sleeve and a valve rod are locked and seriously clamped. Affecting the normal opening and closing of the three-eccentric center butterfly valve. Meanwhile, the conventional triple eccentric butterfly valve structure is likely to cause the butterfly plate and the valve rod to move up and down due to the vertical installation; or the sealing surface is scabbed by dust and high viscosity media. The clamping stagnation of the sealing surface of the butterfly plate and the valve seat is caused, and even the sealing pair is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an anti-clamping triple eccentric butterfly valve.

The technical scheme adopted by the utility model is as follows: the utility model provides an anti-sticking three eccentric butterfly valves, includes valve body, valve rod, butterfly plate, disk seat, the disk seat is fixed in the valve body, the butterfly plate is located the valve body, the valve rod passes the valve body and passes through first pin joint with the butterfly plate, the position at both ends is equipped with a set of dustproof locating component respectively about the outer butterfly plate that corresponds of valve rod, dustproof locating component is including the axle sleeve, axle sleeve protection pad, the position sleeve that set gradually, the position sleeve is close the protruding first location bulge loop of formation in axle sleeve protection pad's one end periphery, the protruding second location bulge loop that forms of valve body inner wall, the position sleeve passes second location bulge loop and first location bulge loop and keeps away from a side surface butt second location bulge loop of axle sleeve protection pad, the position sleeve keeps away from the tip butt butterfly plate terminal surface of axle sleeve protection pad.

And the upper end and the lower end of the butterfly plate are respectively provided with a positioning groove matched with the end part of the positioning sleeve.

Two shaft sleeve protection pads are arranged in the dustproof positioning assembly, and the two shaft sleeve protection pads are positioned between the shaft sleeve and the positioning sleeve.

The valve seat adopts the structure of whole disk seat build-up welding at the valve body inner wall, butterfly plate one side is equipped with sealing washer and clamp plate circle, the clamp plate circle adopts the second pin to link firmly with the butterfly plate, the sealing washer presss from both sides and assembles the tight fit between clamp plate circle and butterfly plate.

The sealing ring is a hard sealing ring.

And a sealing gasket is arranged between the sealing ring and the butterfly plate.

One side of the butterfly plate is provided with a first limit step which is matched with the sealing ring in a positioning way and a second limit step which is matched with the pressing plate ring in a positioning way.

The utility model has the following beneficial effects: according to the anti-clamping triple eccentric butterfly valve structure, the dustproof positioning components with specific structures are arranged at the upper end and the lower end of the butterfly plate, so that positioning and dust prevention are realized, the problem that the butterfly plate and the valve rod are easy to move up and down due to gravity is solved, and the problems that a sealing surface of the triple eccentric butterfly valve is easy to scab by dust and high-viscosity media in severe working conditions such as high dust, easy scabbing and the like, so that the sealing surface of the butterfly plate is clamped with a valve seat, and even a sealing pair is damaged can be solved. The service life of the valve is prolonged, the use cost is greatly reduced, and the application range of the triple eccentric butterfly valve is expanded.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of portion A of FIG. 1;

FIG. 3 is a schematic structural diagram of portion B of FIG. 1;

in the figure, 1, a valve body; 101, a second positioning convex ring; 2, a valve rod; 3, a butterfly plate; 301, positioning the groove; 302, a first limit step; 303, a second limit step; 4, a valve seat; 5, a first pin; 6, a shaft sleeve; 7, a shaft sleeve protection pad; 8, positioning sleeves; 801, a first positioning convex ring; 9, sealing rings; 10, pressing plate rings; 11, a second pin; 12, a sealing gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, which are not described in any more detail in the following embodiments.

The terms of direction and position of the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the present invention.

As shown in figure 1, the anti-clamping triple eccentric butterfly valve comprises a valve body 1, a valve rod 2, a butterfly plate 3 and a valve seat 4, the valve seat 4 is fixed in the valve body 1, the butterfly plate 3 is positioned in the valve body 1, the valve rod 2 passes through the valve body 1 and is connected with the butterfly plate 3 through a first pin 5, a group of dustproof positioning components are respectively sleeved at the positions corresponding to the upper end and the lower end of the butterfly plate 3 outside the valve rod 2, as shown in fig. 2 and fig. 3, the dustproof positioning assembly comprises a shaft sleeve 6, a shaft sleeve protection pad 7 and a positioning sleeve 8 which are arranged in sequence, the periphery of one end of the positioning sleeve 8 close to the shaft sleeve protection pad 7 is protruded to form a first positioning convex ring 801, protruding formation second location bulge loop 101 of valve body 1 inner wall, a lateral surface butt second location bulge loop 101 that axle sleeve protection pad 7 was kept away from to position sleeve 8 passes second location bulge loop 101 and first location bulge loop 801, position sleeve 8 keeps away from the tip butt butterfly plate 3 terminal surface of axle sleeve protection pad 7. Two sets of dustproof positioning component that lie in butterfly plate 3 upper and lower both ends form the positioning action to butterfly plate 3 and valve rod 2 that links firmly with butterfly plate 3, solve butterfly plate and valve rod because the easy problem of moving from top to bottom that gravity leads to, have dustproof effect simultaneously, solve three eccentric butterfly valve and in the harsh operating mode such as high dust and easy scabbing sealed face easy scabbing of dust and high viscosity medium, lead to sealed face of butterfly plate and disk seat jamming, damage the vice problem of sealing even.

Furthermore, both ends all are equipped with the positioning groove 301 with 8 tip adaptations of position sleeve about the butterfly plate 3. The positioning sleeve 8 is used for axially limiting the upper end and the lower end of the butterfly plate 3, and meanwhile, the positioning sleeve 8 is inserted into the positioning groove 301 to form a radial limiting matching effect.

Two shaft sleeve protection pads 7 are arranged in the dustproof positioning assembly, and the two shaft sleeve protection pads 7 are positioned between the shaft sleeve 6 and the positioning sleeve 8.

In this embodiment, disk seat 4 adopts the structure of whole disk seat build-up welding at 1 inner wall of valve body, 3 one sides of butterfly plate are equipped with sealing washer 9 and clamp plate circle 10, clamp plate circle 10 adopts second pin 11 with butterfly plate 3 to link firmly, sealing washer 9 presss from both sides and adorns the tight fit between clamp plate circle 10 and butterfly plate 3. The seal ring 9 is convenient to disassemble, repair and replace.

The sealing ring 9 is a hard sealing ring.

And a sealing gasket 12 is arranged between the sealing ring 9 and the butterfly plate 3.

One side of the butterfly plate 3 is provided with a first limit step 302 in positioning fit with the sealing ring 9 and a second limit step 303 in positioning fit with the pressure plate ring 10.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the utility model is not limited by the scope of the appended claims.

Claims

1. The utility model provides an anti-sticking triple offset butterfly valve, includes valve body (1), valve rod (2), butterfly plate (3), disk seat (4) are fixed in valve body (1), butterfly plate (3) are located valve body (1), valve rod (2) pass valve body (1) and are connected its characterized in that through first pin (5) with butterfly plate (3): the position that corresponds about butterfly plate (3) outside valve rod (2) both ends is equipped with a set of dustproof locating component respectively, dustproof locating component is including axle sleeve (6), axle sleeve protection pad (7), position sleeve (8) that set gradually, the protruding first location bulge loop (801) that forms in one end periphery that position sleeve (8) are close axle sleeve protection pad (7), protruding second location bulge loop (101) that form of valve body (1) inner wall, a side surface butt second location bulge loop (101) of axle sleeve protection pad (7) are kept away from in position sleeve (8) through second location bulge loop (101) and first location bulge loop (801), the tip butt butterfly plate (3) terminal surface of axle sleeve protection pad (7) is kept away from in position sleeve (8).

2. The anti-sticking triple offset butterfly valve of claim 1, wherein: and the upper end and the lower end of the butterfly plate (3) are respectively provided with a positioning groove (301) matched with the end part of the positioning sleeve (8).

3. The anti-sticking triple offset butterfly valve of claim 1, wherein: two shaft sleeve protection pads (7) are arranged in the dustproof positioning assembly, and the two shaft sleeve protection pads (7) are positioned between the shaft sleeve (6) and the positioning sleeve (8).

4. The anti-sticking triple offset butterfly valve of claim 1, wherein: the butterfly valve is characterized in that the valve seat (4) adopts a structure that the whole valve seat is welded on the inner wall of the valve body (1), a sealing ring (9) and a pressing plate ring (10) are arranged on one side of the butterfly plate (3), the pressing plate ring (10) is fixedly connected with the butterfly plate (3) through a second pin (11), and the sealing ring (9) is clamped and tightly assembled between the pressing plate ring (10) and the butterfly plate (3).

5. The anti-sticking triple offset butterfly valve of claim 4, wherein: the sealing ring (9) is a hard sealing ring.

6. The anti-sticking triple offset butterfly valve of claim 5, wherein: a sealing gasket (12) is arranged between the sealing ring (9) and the butterfly plate (3).

7. The anti-sticking triple offset butterfly valve of claim 4, wherein: one side of the butterfly plate (3) is provided with a first limit step (302) which is matched with the sealing ring (9) in a positioning way and a second limit step (303) which is matched with the pressing plate ring (10) in a positioning way.