CN210218709U

CN210218709U - Spoon-shaped sealing ring double-eccentric bidirectional-pressure elastic metal sealing butterfly valve

Info

Publication number: CN210218709U
Application number: CN201921323147.9U
Authority: CN
Inventors: Liting Shao; 邵力亭; Chun Shao; 邵淳; Jun Zhou; 周军; Xiaojing Zheng; 郑小静; Xiang'an Zheng; 郑祥安; Xiangqing Liu; 柳相卿
Original assignee: Zhejiang Bei Ze Valve Science And Technology Ltd
Current assignee: Zhejiang Bei Ze Valve Science And Technology Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-03-31
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses a two-way pressure elasticity metal seal butterfly valve of spoon type sealing washer double-eccentric, which comprises a valve body, the inner chamber of valve body is provided with the butterfly plate, the butterfly plate is provided with spoon shape sealing ring, one side of spoon shape sealing ring is provided with presses the cover, press the cover and seted up a plurality of connecting holes, sliding connection has hexagon bolt in the inner chamber of connecting hole, a plurality of thread groove have been seted up to the both ends of valve body inner wall all are the annular array, hexagon bolt outer wall's one end and thread groove threaded connection, it is connected with the valve body laminating through a plurality of hexagon bolt to press the cover, the spacing groove has been seted up to the bottom of pressing cover one end, the inner. The utility model discloses utilize spoon type sealing ring's mode of setting, press the cover to compress tightly the sealing washer and make it fix on the valve body, make the sealing washer circumference outer along the part fixed, along leaning on in the circumference and pressing sheathe in, all the other parts are unsettled in elasticity active state, improve the leakproofness of butterfly valve to improve the life of butterfly valve.

Description

Spoon-shaped sealing ring double-eccentric bidirectional-pressure elastic metal sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve field, in particular to two eccentric two-way pressure elasticity metal seal butterfly valves of spoon type sealing washer.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve with a closing member which is a disc and rotates around a valve shaft to open and close. 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, the existing butterfly valve is easy to leak in some severe working conditions, poor in sealing effect and short in service life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two eccentric two-way pressure elasticity metal seal butterfly valves of spoon type sealing washer to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: two-way pressure elasticity metal seal butterfly valve of spoon type sealing washer, which comprises a valve body, the inner chamber of valve body is provided with the butterfly plate, the both ends of butterfly plate all are provided with spoon shape sealing ring, one side of spoon shape sealing ring is provided with presses the cover, the middle part of pressing the cover lower surface is annular array and has seted up a plurality of connecting holes, sliding connection has hexagon bolt in the inner chamber of connecting hole, a plurality of thread groove have all been seted up to annular array at the both ends of valve body inner wall, hexagon bolt outer wall's one end and thread groove threaded connection, it is connected with the valve body laminating through a plurality of hexagon bolts to press the cover, the spacing groove has been seted up to the bottom of pressing cover one end, the inner chamber and the sliding cup joint of spoon shape.

Preferably, one side of the spoon-shaped sealing ring is provided with a first leather pad, and the first leather pad is positioned between the spoon-shaped sealing ring and the valve body.

Preferably, the inner chamber of valve body is provided with the valve rod, the inner chamber and the valve rod of butterfly plate slip and cup joint, the screw thread connection groove has all been seted up at the both ends of butterfly plate one side, butterfly plate one side symmetry is provided with first screw, the through-hole has been seted up to one side symmetry of valve rod, the one end of first screw is passed through-hole and screw thread connection groove threaded connection.

Preferably, the bottom of the valve body is provided with a bottom plate, the bottom of the bottom plate is a rectangular array and is provided with a plurality of limiting holes, the bottom of the valve body is a rectangular array and is provided with a plurality of thread clamping grooves, the inner cavity of each limiting hole is sleeved with a second screw in a sliding mode, and one end of each second screw is in threaded connection with each thread clamping groove.

Preferably, the bottom of the outer wall of the valve rod is provided with a groove, the bottom of the inner cavity of the valve body is fixedly connected with a lantern ring, and the inner wall of the lantern ring is in sliding sleeve connection with the groove.

Preferably, the top of valve body inner chamber is provided with the stop collar, the avris of stop collar upper surface is the rectangle array and has seted up a plurality of slide openings, the inner chamber slip of slide opening has cup jointed the inner screw, the bottom of stop collar is through inner screw and valve body fixed connection, the inner wall of stop collar is provided with a plurality of balls.

The utility model discloses a technological effect and advantage:

1. the utility model discloses utilize spoon type sealing ring's mode of setting, spoon type sectional metal seal ring installs in the valve body, press the cover to compress tightly the sealing washer and make it fix on the valve body, make the sealing washer circumference outer edge part fixed, the circumference inner edge supports and leans on pressing the cover, the unsettled elasticity active state that is in of the rest part, during forward pressure, the butterfly plate contacts with spoon shape sealing ring, the butterfly plate presses because of forming the specific pressure of seal on spoon shape sealing ring, pressure is big more, the specific pressure of seal is big more, be favorable to sealing, improve the leakproofness of butterfly valve, thereby improve the life of butterfly valve;

2. the utility model discloses utilize the mode that sets up of spoon type sealing ring, when the reversal pressure, medium pressure promotes butterfly plate and valve rod and keeps away from the sealing washer, make sealed specific pressure diminish, at this moment, the unsettled circumference of sealing washer is interior to make it form certain sealed specific pressure to butterfly plate spoon shape sealing ring motion round fixed part's arm of force, pressure is big more, sealed specific pressure is big more, this sealed specific pressure compensation is because of the pretension specific pressure that the butterfly plate warp the back and reduces, thereby realize the reversal seal of valve, improve the leakproofness of butterfly valve, thereby improve the life of butterfly valve.

Drawings

Fig. 1 is a schematic view of the front internal structure of the present invention.

Fig. 2 is an enlarged schematic structural diagram of a point a in fig. 1 according to the present invention.

Fig. 3 is an enlarged schematic structural diagram of the point B in fig. 1 according to the present invention.

Fig. 4 is an enlarged schematic structural diagram of the point C in fig. 1 according to the present invention.

In the figure: 1. a valve body; 101. a threaded groove; 102. a threaded clamp groove; 2. a butterfly plate; 201. connecting grooves by screw threads; 3. a spoon-shaped sealing ring; 4. pressing the sleeve; 401. connecting holes; 5. a hexagon bolt; 6. a limiting groove; 7. a first leather pad; 8. a valve stem; 801. grooving; 9. a first screw; 10. a second screw; 11. a base plate; 111. a limiting hole; 12. a collar; 13. a limiting sleeve; 131. a slide hole; 14. inner screws; 15. and a ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a spoon-shaped sealing ring double-eccentric bidirectional pressure elastic metal sealing butterfly valve as shown in figures 1-4, which comprises a valve body 1, wherein the inner cavity of the valve body 1 is provided with a butterfly plate 2, both ends of the butterfly plate 2 are provided with spoon-shaped sealing rings 3, one side of the spoon-shaped sealing ring 3 is provided with a pressure sleeve 4, the middle part of the lower surface of the pressure sleeve 4 is provided with a plurality of connecting holes 401 in an annular array, hexagonal bolts 5 are slidably connected in the inner cavity of the connecting holes 401, both ends of the inner wall of the valve body 1 are provided with a plurality of thread grooves 101 in an annular array, one end of the outer wall of the hexagonal bolt 5 is in threaded connection with the thread grooves 101, the pressure sleeve 4 is in fit connection with the valve body 1 through a plurality of hexagonal bolts 5, the bottom of one end of the pressure sleeve 4 is provided with a limiting groove 6, the inner cavity of the limiting groove 6 is in slide socket joint with the spoon-shaped sealing ring, the first leather gasket 7 can prevent the spoon-shaped sealing ring 3 from being crushed by the pressing sleeve 4 and the valve body 1;

the inner cavity of the valve body 1 is provided with a valve rod 8, the inner cavity of the butterfly plate 2 is in sliding sleeve joint with the valve rod 8, two ends of one side of the butterfly plate 2 are respectively provided with a threaded connecting groove 201, one side of the butterfly plate 2 is symmetrically provided with a first screw 9, one side of the valve rod 8 is symmetrically provided with a through hole, one end of the first screw 9 passes through the through hole to be in threaded connection with the threaded connecting groove 201, the position of the butterfly plate 2 on the valve rod 8 can be kept unchanged by the first screw 9, the bottom of the valve body 1 is provided with a bottom plate 11, a second leather pad is arranged between the bottom plate 11 and the valve body 1 and can enhance the sealing performance of the butterfly valve, the bottom of the bottom plate 11 is provided with a plurality of limiting holes 111 in a rectangular array, the bottom of the valve body 1 is provided with a plurality of threaded clamping grooves 102 in a rectangular array, the inner cavity of the limiting holes 111 is in, thereby defining the position of the valve stem 8;

fluting 801 has been seted up to the bottom of 8 outer walls of valve rod, the bottom fixedly connected with lantern ring 12 of 1 inner chamber of valve body, the inner wall and the fluting 801 slip of lantern ring 12 cup joint, the top of 1 inner chamber of valve body is provided with stop collar 13, the avris of 13 upper surfaces of stop collar is the rectangle array and has seted up a plurality of slide opening 131, the inner screw 14 has been cup jointed in the inner chamber slip of slide opening 131, inner screw 14 and 1 fixed connection of valve body are passed through to the bottom of stop collar 13, the inner wall of stop collar 13 is provided with a plurality of balls 15, ball 15 can reduce 8's frictional force of valve rod, thereby improve.

This practical theory of operation: firstly, two spoon-shaped sealing rings 3 are respectively sleeved at two ends of an inner cavity of a valve body 1, then a pressing sleeve 4 is installed on the valve body 1, the bottom ends of the spoon-shaped sealing rings 3 are sleeved with a limiting groove 6, then a butterfly plate 2 and a valve rod 8 are installed, a bottom plate 11 and a limiting sleeve 13 are respectively installed on the valve body 1, and a butterfly valve is installed on a pipeline after being assembled;

when the butterfly plate 2 is pressed and is pressed in the forward direction, the butterfly plate 2 is in contact with the spoon-shaped sealing ring 3, and because the spoon-shaped sealing ring 3 has certain elasticity, the butterfly plate 2 forms specific sealing pressure on the spoon-shaped sealing ring 3, and the larger the pressure is, the larger the specific sealing pressure is, which is beneficial to sealing;

when the reversal is pressed, medium pressure promotes butterfly plate 2 and valve rod 8 and keeps away from spoon shape sealing ring 3, make sealed specific pressure diminish, at this moment, be spoon type section because of spoon shape sealing ring 3, medium pressure acts on one side on spoon shape sealing ring 3, the unsettled circumference of spoon shape sealing ring 3 is inside to butterfly plate 2 motion round fixed part's arm of force point, make it form certain sealed specific pressure, pressure is big more, sealed specific pressure is big more, this sealed specific pressure compensation because of the pretension specific pressure that butterfly plate 2 warp the back and reduce, thereby realize the reversal of valve sealed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Spoon type sealing washer two eccentric two-way pressure elasticity metal seal butterfly valve, including valve body (1), its characterized in that: the inner chamber of valve body (1) is provided with butterfly plate (2), the both ends of butterfly plate (2) all are provided with spoon shape sealing ring (3), one side of spoon shape sealing ring (3) is provided with presses cover (4), the middle part of pressing cover (4) lower surface is the annular array and has seted up a plurality of connecting holes (401), sliding connection has hex bolts (5) in the inner chamber of connecting hole (401), the both ends of valve body (1) inner wall all are the annular array and have seted up a plurality of thread groove (101), the one end and the thread groove (101) threaded connection of hex bolts (5) outer wall, press cover (4) to be connected through a plurality of hex bolts (5) and valve body (1) laminating, spacing groove (6) have been seted up to the bottom of pressing cover (4) one end, the inner chamber and the sliding socket joint of spoon shape sealing ring (3) of spacing groove (6).

2. The spoon-shaped sealing ring double-eccentric bidirectional pressure elastic metal sealing butterfly valve according to claim 1, characterized in that: one side of the spoon-shaped sealing ring (3) is provided with a first leather pad (7), and the first leather pad (7) is positioned between the spoon-shaped sealing ring (3) and the valve body (1).

3. The spoon-shaped sealing ring double-eccentric bidirectional pressure elastic metal sealing butterfly valve according to claim 1, characterized in that: the inner chamber of valve body (1) is provided with valve rod (8), the inner chamber and the valve rod (8) of butterfly plate (2) slip and cup joint, threaded connection groove (201) have all been seted up at the both ends of butterfly plate (2) one side, butterfly plate (2) one side symmetry is provided with first screw (9), the through-hole has been seted up to one side symmetry of valve rod (8), the one end of first screw (9) is passed through-hole and threaded connection groove (201) threaded connection.

4. The spoon-shaped sealing ring double-eccentric bidirectional pressure elastic metal sealing butterfly valve according to claim 1, characterized in that: the bottom of valve body (1) is provided with bottom plate (11), the bottom of bottom plate (11) is the rectangular array and has seted up a plurality of spacing holes (111), the bottom of valve body (1) is the rectangular array and has seted up a plurality of screw thread draw-in grooves (102), the inner chamber of spacing hole (111) slides and has cup jointed second screw (10), the one end and the screw thread draw-in groove (102) threaded connection of second screw (10).

5. The spoon-shaped sealing ring double-eccentric bidirectional pressure elastic metal sealing butterfly valve according to claim 3, characterized in that: the bottom of the outer wall of the valve rod (8) is provided with a groove (801), the bottom of the inner cavity of the valve body (1) is fixedly connected with a sleeve ring (12), and the inner wall of the sleeve ring (12) is in sliding sleeve connection with the groove (801).

6. The spoon-shaped sealing ring double-eccentric bidirectional pressure elastic metal sealing butterfly valve according to claim 1, characterized in that: the top of valve body (1) inner chamber is provided with stop collar (13), the avris of stop collar (13) upper surface is the rectangle array and has seted up a plurality of slide openings (131), inner screw (14) have been cup jointed in the inner chamber slip of slide opening (131), the bottom of stop collar (13) is through inner screw (14) and valve body (1) fixed connection, the inner wall of stop collar (13) is provided with a plurality of balls (15).