CN208804272U - A kind of ball valve of sealing structure - Google Patents

Abstract

The utility model discloses a kind of ball valves of sealing structure, including valve body, the body base is equipped with valve seat, and valve inner is equipped with sphere, the surface of the sphere is provided with circular through hole, and the both ends of sphere are separately installed with first pipe and second pipe, the first pipe and second pipe surface are provided with screw hole, the top of the sphere is provided with card slot, the upper end of the movable rotation-shaft is connected by screwed pipe with valve rod, the top end of the valve body is provided with valve deck, the movable rotation-shaft is connected by elastic expansion ring with long blank pipe, and bushing is enclosed on the outside of long blank pipe, seal receptacle is provided on the valve body, the long blank pipe is connected by valve rod with guide post, and one end of guide post is fixed with handwheel.The utility model is changed through-hole direction by spinning ball, to realize the switch of ball valve, operated simple and convenient, be provided simultaneously with the preferable advantage of leakproofness by opening up a diameter through-hole equal with pipe diameter on sphere.

Description

A kind of ball valve of sealing structure

Technical field

The utility model relates to valve arrangement technical field, specially a kind of ball valve of sealing structure.

Background technique

Ball valve, the valve that opening and closing element (sphere) is driven by valve rod, and rotated around ball valve axis.Also it can be used for fluid Adjusting and control, wherein firmly sealing its V-type core of V-type ball valve and the metal seat valve of pile-up welding hard alloy between have it is very strong Shearing force, the medium especially suitable for fibre-bearing, small solid pellet etc..And multi-pass ball valve not only can be controlled flexibly on pipeline The interflow of medium, the switching for shunting and flowing to, while any channel can also be closed and other two channel is made to be connected.This class valve Door should be generally horizontally mounted in the duct.Ball valve is divided into according to driving method: pneumatic ball valve, electrical ball valve, manual ball valve.? China, ball valve are widely used in petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel etc. Industry occupies very important status in national economy.It has the movement being rotated by 90 °, and faucet body is sphere, there is circle Through-hole or channel pass through its axis.

It is inconvenient that current ball valve is adjusted, and sealing performance is poor, is unable to satisfy the production and application demand of people, therefore city It is badly in need of developing a kind of ball valve of novel sealing structure in field.

Utility model content

The purpose of this utility model is to provide a kind of ball valves of sealing structure, mentioned above in the background art to solve Problem.

To achieve the above object, the utility model provides the following technical solutions: a kind of ball valve of sealing structure, including valve Body, the body base is equipped with valve seat, and valve inner is equipped with sphere, and the surface of the sphere is provided with circular through hole, And the both ends of sphere are separately installed with first pipe and second pipe, the first pipe and second pipe surface are provided with spiral shell Hole, the top of the sphere is provided with card slot, and both ends are rotatablely connected by hinge and movable rotation-shaft inside card slot, the activity The upper end of shaft is connected by screwed pipe with valve rod, and the top end of the valve body is provided with valve deck, and one end of valve deck is equipped with pressure Ring, the movable rotation-shaft is connected by elastic expansion ring with long blank pipe, and bushing is enclosed on the outside of long blank pipe, on the valve body It is provided with seal receptacle, the long blank pipe is connected by valve rod with guide post, and one end of guide post is fixed with handwheel.

Preferably, the hinged place of the sphere and first pipe and second pipe is provided with sealing ring.

Preferably, the first pipe and second pipe are fixed by bolt-through screw hole with valve body.

Preferably, the valve rod passes through pressure ring and extends to inside screwed pipe.

Preferably, the two sides of long blank pipe are arranged in the seal receptacle, and seal receptacle is fixed by bolt and valve body.

Preferably, one end of the valve rod passes through long blank pipe and connect with elastic expansion ring.

Compared with prior art, the utility model has the beneficial effects that

(1) top of sphere is provided with card slot, and both ends are rotatablely connected by hinge and movable rotation-shaft inside card slot, passes through card The mode connect is installed and fixed movable rotation-shaft, has and mounts and dismounts convenient and efficient advantage, by opening on sphere If the diameter circular through hole equal with pipe diameter, changes circular through hole direction by spinning ball, to realize ball The switch of valve operates simple and convenient, and the upper end of movable rotation-shaft is connected by screwed pipe with valve rod, utilizes threaded connection Mode installs valve rod, assembles very convenient；

(2) hinged place of sphere and first pipe and second pipe is provided with sealing ring, and sealing ring is steel alloy built-up welding, So hard seal ball valve will not generate too big abrasion in switch, it is provided with seal receptacle on valve body, using polytetrafluoroethylene (PTFE) etc. Seal receptacle made of elastic material, structure are easy to seal, and the jam pot cover ability of ball valve increases with increasing for pressure medium, It is small with the friction loss of sphere since the materials such as polytetrafluoroethylene (PTFE) have good self-lubrication, therefore the long service life of ball valve, Since valve rod only rotates without moving up and down, the packing seal of valve rod is survivable, and sealability is with medium Increasing for pressure and increase.

Detailed description of the invention

Fig. 1 is the whole main view of the utility model；

Fig. 2 is the structural schematic diagram of the utility model；

Fig. 3 is the fixed station partial structural diagram of the utility model.

In figure: 1, valve rod；2, pressure ring；3, valve deck；4, screwed pipe；5, movable rotation-shaft；6, card slot；7, sphere；8, the first pipe Road；9, screw hole；10, circular through hole；11, valve body；12, valve seat；13, handwheel；14, guide post；15, long blank pipe；16, bushing；17, close Seal seat；18, second pipe；19, sealing ring；20, elastic expansion ring.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

Fig. 1-3 is please referred to, a kind of embodiment provided by the utility model: a kind of ball valve of sealing structure, including valve body 11, 11 bottom of valve body is equipped with valve seat 12, and sphere 7 is equipped with inside valve body 11, and the surface of sphere 7 is provided with circular through hole 10, and The both ends of sphere 7 are separately installed with first pipe 8 and second pipe 18, and first pipe 8 and 18 surface of second pipe are provided with spiral shell Hole 9, the top of sphere 7 is provided with card slot 6, and 6 inside both ends of card slot are rotatablely connected by hinge and movable rotation-shaft 5, and activity turns The upper end of axis 5 is connected by screwed pipe 4 with valve rod 1, and 11 top of valve body is provided with valve deck 3, and one end of valve deck 3 is equipped with pressure Ring 2, movable rotation-shaft 5 is connected by elastic expansion ring 20 with long blank pipe 15, and the outside of long blank pipe 15 is enclosed with bushing 16, valve body Seal receptacle 17 is provided on 11, long blank pipe 15 is connected by valve rod 1 with guide post 14, and one end of guide post 14 is fixed with handwheel 13。

Further, the hinged place of sphere 7 and first pipe 8 and second pipe 18 is provided with sealing ring 19, sealing ring 19 It is steel alloy built-up welding, so ball valve will not generate too big abrasion in switch, has ensured the sealing performance at pipeline, prevented liquid Body leakage phenomenon occurs.

Further, first pipe 8 and second pipe 18 are fixed by bolt-through screw hole 9 and valve body 11.

Further, valve rod 1 passes through pressure ring 2 and extends to inside screwed pipe 4, since valve rod 1 only rotates without rising Drop movement, the packing seal of valve rod 1 is survivable, and sealability increases with increasing for pressure medium.

Further, the two sides of long blank pipe 15 are arranged in seal receptacle 17, and seal receptacle 17 is fixed by bolt and valve body 11, adopts The seal receptacle 17 made of polytetrafluoroethylene (PTFE) elastomeric material, structure are easy to seal, and the jam pot cover ability of ball valve is with medium Increasing for pressure and increase.

Further, one end of valve rod 1 passes through long blank pipe 15 and connect with elastic expansion ring 20.

Working principle: in use, 11 bottom of valve body is equipped with valve seat 12, and sphere 7 is installed inside valve body 11, sphere 7 Surface be provided with circular through hole 10, the top of sphere 7 is provided with card slot 6, and 6 inside both ends of card slot are turned by hinge and activity Axis 5 is rotatablely connected, and is installed and fixed by way of clamping to movable rotation-shaft 5, has installation and removal conveniently Advantage passes through 5 screw of movable rotation-shaft by opening up a diameter circular through hole equal with pipe diameter 10 on sphere 7 Body 7 changes 10 direction of circular through hole, to realize the switch of ball valve, operates simple and convenient, and the upper end of movable rotation-shaft 5 is logical It crosses screwed pipe 4 to be connected with valve rod 1, valve rod 1 is installed in the way of threaded connection, assemble very convenient, valve Bar 1 passes through pressure ring 2 and extends to inside screwed pipe 4, and one end of valve rod 1 passes through long blank pipe 15 and connect with elastic expansion ring 20, due to valve Bar 1 only rotates without moving up and down, and the packing seal of valve rod 1 is survivable, and sealability is with pressure medium Increase and increase, be provided with seal receptacle 17 on valve body 11, the two sides of long blank pipe 15 are arranged in seal receptacle 17, and seal receptacle 17 is logical It crosses bolt and valve body 11 is fixed, using seal receptacle 17 made of polytetrafluoroethylene (PTFE) elastomeric material, structure is easy to seal, Er Qieqiu The jam pot cover ability of valve increases with increasing for pressure medium, and sphere 7 and the hinged place of first pipe 8 and second pipe 18 are all provided with It is equipped with sealing ring 19, sealing ring 19 is steel alloy built-up welding, so ball valve will not generate too big abrasion in switch, has ensured pipe Sealing performance at road prevents fluid seepage phenomenon from occurring.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

Claims (6)

1. a kind of ball valve of sealing structure, including valve body (11), which is characterized in that valve body (11) bottom is equipped with valve seat (12), it and inside valve body (11) is equipped with sphere (7), the surface of the sphere (7) is provided with circular through hole (10), and sphere (7) both ends are separately installed with first pipe (8) and second pipe (18), the first pipe (8) and second pipe (18) table Face is provided with screw hole (9), and the top of the sphere (7) is provided with card slot (6), and the internal both ends of card slot (6) pass through hinge and work The upper end of turn axis (5) rotation connection, the movable rotation-shaft (5) is connected by screwed pipe (4) with valve rod (1), the valve body (11) top is provided with valve deck (3), and one end of valve deck (3) is equipped with pressure ring (2), and the movable rotation-shaft (5) passes through elastic expansion Circle (20) is connected with long blank pipe (15), and bushing (16) are enclosed on the outside of long blank pipe (15), is arranged on the valve body (11) Have seal receptacle (17), the long blank pipe (15) is connected by valve rod (1) with guide post (14), and one end of guide post (14) is fixed with Handwheel (13).

2. a kind of ball valve of sealing structure according to claim 1, it is characterised in that: the sphere (7) and first pipe (8) and the hinged place of second pipe (18) is provided with sealing ring (19).

3. a kind of ball valve of sealing structure according to claim 1, it is characterised in that: the first pipe (8) and second Pipeline (18) is fixed by bolt-through screw hole (9) and valve body (11).

4. a kind of ball valve of sealing structure according to claim 1, it is characterised in that: the valve rod (1) passes through pressure ring (2) It is internal to extend to screwed pipe (4).

5. a kind of ball valve of sealing structure according to claim 1, it is characterised in that: the seal receptacle (17) is arranged in length The two sides of blank pipe (15), and seal receptacle (17) is fixed by bolt and valve body (11).

6. a kind of ball valve of sealing structure according to claim 1, it is characterised in that: one end of the valve rod (1) passes through Long blank pipe (15) connect with elastic expansion ring (20).