CN210265980U

CN210265980U - Metal sealing ball valve

Info

Publication number: CN210265980U
Application number: CN201921212998.6U
Authority: CN
Inventors: 吴雪
Original assignee: SICHUAN KAITZ VALVE Manufacturing CO LTD
Current assignee: SICHUAN KAITZ VALVE Manufacturing CO LTD
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-04-07
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a metal seal ball valve, which comprises an outer shell, the top welding of shell has the valve gap, the valve body has all been welded to shell cavity's both sides, the equal sliding connection in both sides of valve body inner chamber has the disk seat, the outside welding of disk seat has the spring, the inboard contact of disk seat has the spheroid, the through-hole has been seted up in spheroidal front, the through-hole extends to spheroidal outside. The utility model discloses a shell, the valve gap, the valve body, the disk seat, a spring, the through-hole, the kelly, the setting of valve rod and bearing housing, make the ball valve possess and prevent deformation and the good advantage of sealing performance, solved the inside control of opening and close piece because the cost of current ball valve simultaneously, its material is the nonmetal component mostly, but nonmetal opening and close piece normal use in little flow pipeline, in needs high-pressure pipeline, nonmetal opening and close piece can produce deformation, thereby reduce its sealing performance, influence the problem of ball valve normal use.

Description

Metal sealing ball valve

Technical Field

The utility model relates to the technical field of valves, specifically be a metal seal ball valve.

Background

The ball valve, the opening and closing piece (spheroid) is driven by the valve stem, and round the valve that the ball valve axis makes rotary motion, also can be used to fluidic regulation and control, and the ball valve is used in industries such as petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel extensively, plays the position of lifting the weight in national economy.

Because the control of cost, its material is nonmetal component mostly for the inside on-off of current ball valve, but nonmetal on-off normal use in little flow line, in needs high-pressure line, nonmetal on-off can produce deformation to reduce its sealing performance, influence the normal use of ball valve, for this we propose a metal seal ball valve and solve above problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a metal seal ball valve possesses the advantage that prevents deformation and sealing performance good, has solved the inside control of opening and close piece because the cost of current ball valve, and its material is the nonmetal component mostly, and nonmetal opening and close piece can normal use in little flow pipeline, and in needs high-pressure pipeline, nonmetal opening and close piece can produce deformation to reduce its sealing performance, influence the problem of ball valve normal use.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a metal seal ball valve, includes the shell, the top welding of shell has the valve gap, the valve body has all been welded to shell cavity's both sides, the equal sliding connection in both sides of valve body inner chamber has the disk seat, the outside welding of disk seat has the spring, the inboard contact of disk seat has the spheroid, the through-hole has been seted up in the spheroidal front, the through-hole extends to spheroidal outside, the recess has been seted up at spheroidal top, and the inner wall joint of recess has the kelly, the top welding of kelly has the valve rod, the top of valve rod runs through the valve gap through the bearing housing and extends to the outside of valve gap.

Preferably, the valve body is the design of cavity formula, the cross sectional area of the inside cavity of valve body is the same with the cross sectional area of through-hole, the outer end and the shell intercommunication of valve body, the spheroid forms for alloy steel spray welding, the valve body forms for the alloy steel build-up welding, the radian on spheroid surface is identical with the inboard radian of valve body.

Preferably, the inner wall welding of shell has the baffle, the inboard of baffle is pegged graft and is had the locating plate, the inner wall fixed mounting of locating plate has sealed axle, the inner wall of locating plate is located the equal fixed mounting in both sides of sealed axle and is had the sealing washer.

Preferably, the positioning plate is sleeved on the surface of the valve rod, the inner wall of the sealing shaft is welded with the surface of the valve rod, and the inner wall of the sealing ring is in close contact with the surface of the valve rod.

Preferably, the bottom of the sphere is welded with a limiting rod, a bearing seat is supported by a bottom bearing of the limiting rod, and the bottom of the bearing seat is welded with the bottom of the inner cavity of the shell.

Preferably, the handle is sleeved on the top of the valve rod, the top of the handle is in threaded connection with a positioning wire, and the bottom end of the positioning wire penetrates through the valve rod and extends to the inner cavity of the valve rod to be in threaded connection with the inner wall of the valve rod.

Preferably, the both sides of shell all weld the pipe, the outside welding of pipe has the ring flange, the inboard and the shell of pipe are the connected state.

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

1. the utility model discloses a shell, the valve gap, the valve body, the disk seat, a spring, the through-hole, the kelly, the setting of valve rod and bearing housing, make the ball valve possess and prevent deformation and the good advantage of sealing performance, solved the inside control of opening and close piece because the cost of current ball valve simultaneously, its material is the nonmetal component mostly, but nonmetal opening and close piece normal use in little flow pipeline, in needs high-pressure pipeline, nonmetal opening and close piece can produce deformation, thereby reduce its sealing performance, influence the problem of ball valve normal use.

2. The utility model can be matched with the ball body through the arrangement of the valve body to control the opening and closing of the valve, the ball body is formed by spray welding alloy steel, the valve body is formed by overlaying alloy steel, double pressure of fluid inside and outside the valve body can be borne, compared with nonmetal sealing, the metal sealing has better durability and sealing performance, the sealing performance between the valve rod and the shell can be improved through the arrangement of the sealing ring and the sealing shaft, and can increase the pressure resistance, so that the ball valve can not generate the permeation situation in the using process, the stability of the ball body can be further increased through the arrangement of the bearing seat and the limiting rod, the ball body is prevented from generating the deviation under the high pressure condition to influence the sealing property, through the setting of handle, can conveniently rotate the valve rod, through the setting of pipe and flange dish, can conveniently install this ball valve.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial front sectional view of the valve body of the present invention;

FIG. 3 is a partial front sectional view of the positioning plate of the present invention;

fig. 4 is a top view of the seal shaft of the present invention.

In the figure: 1. a housing; 2. a valve cover; 3. a valve body; 4. a valve seat; 5. a spring; 6. a through hole; 7. a clamping rod; 8. a valve stem; 9. a bearing housing; 10. a partition plate; 11. positioning a plate; 12. a seal shaft; 13. a seal ring; 14. a limiting rod; 15. a bearing seat; 16. a handle; 17. positioning wires; 18. a conduit; 19. a flange plate; 20. a sphere.

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.

Referring to fig. 1-4, a metal sealing ball valve comprises a housing 1, a valve cover 2 welded on the top of the housing 1, a valve body 3 welded on both sides of the inner cavity of the housing 1, a valve seat 4 slidably connected on both sides of the inner cavity of the valve body 3, a spring 5 welded on the outer side of the valve seat 4, a ball 20 in contact with the inner side of the valve seat 4, a through hole 6 formed on the front surface of the ball 20, the through hole 6 extending to the outside of the ball 20, a groove formed on the top of the ball 20, a clamping rod 7 fastened on the inner wall of the groove, a valve rod 8 welded on the top of the clamping rod 7, a bearing sleeve 9 penetrating through the valve cover 2 and extending to the outside of the valve cover 2, the valve body 3 being hollow, the cross-sectional area of the inner cavity of the valve body 3 being the same as the cross-sectional area of the through hole 6, the outer end of, the radian of the surface of the ball body 20 is coincident with the radian of the inner side of the valve body 3, the valve body 3 can be matched with the ball body 20 to control the opening and closing of a valve, the ball body 20 is formed by alloy steel spray welding, the valve body 3 is formed by alloy steel surfacing, and can bear the double pressure of fluid inside and outside the valve body 3, compared with nonmetal sealing, the metal sealing has better durability and sealing performance, a partition plate 10 is welded on the inner wall of the shell 1, a positioning plate 11 is inserted into the inner side of the partition plate 10, a sealing shaft 12 is fixedly arranged on the inner wall of the positioning plate 11, sealing rings 13 are fixedly arranged on the inner wall of the positioning plate 11 and positioned on both sides of the sealing shaft 12, the positioning plate 11 is sleeved on the surface of the valve rod 8, the inner wall of the sealing shaft 12 is welded with the surface of the valve rod 8, the inner wall of, can increase the leakproofness between the valve rod 8 and the shell 1, and can increase the compressive resistance, make the ball valve in the use, can not produce the infiltration condition, the bottom welding of spheroid 20 has gag lever post 14, the bottom bearing of gag lever post 14 supports there is bearing frame 15, the bottom of bearing frame 15 is welded with the bottom of shell 1 inner chamber, through the setting of bearing frame 15 and gag lever post 14, can further increase the stability of spheroid 20, prevent that spheroid 20 from producing the skew under the high pressure condition, influence its leakproofness, handle 16 has been cup jointed at the top of valve rod 8, the top threaded connection of handle 16 has set wire 17, the bottom of set wire 17 runs through valve rod 8 and extends to the inner wall threaded connection of valve rod 8, through the setting of handle 16, can conveniently rotate valve rod 8, pipe 18 has all been welded to the both sides of shell 1, the outside welding of pipe 18 has ring flange 19, the inboard and the shell 1 of pipe 18 are the connected state, setting through pipe 18 and flange dish 19, can conveniently install this ball valve, through shell 1, valve gap 2, valve body 3, disk seat 4, spring 5, through-hole 6, kelly 7, the setting of valve rod 8 and bearing housing 9, make the ball valve possess and prevent deformation and the good advantage of sealing performance, the inside opening and closing piece of current ball valve owing to the control of cost has been solved simultaneously, its material is nonmetal component mostly, but nonmetal opening and closing piece normal use in little flow pipeline, in needs high-pressure pipeline, nonmetal opening and closing piece can produce deformation, thereby reduce its sealing performance, influence the problem of ball valve normal use.

When in use, the handle 16 is rotated to drive the valve rod 8 to rotate, the valve rod 8 rotates and simultaneously drives the clamping rod 7 to rotate, the clamping rod 7 drives the ball body 20 to rotate, when the through holes 6 on the surface of the ball body 20 are transversely distributed, the ball valve is in an open state, when the through holes 6 on the surface of the ball body 20 are longitudinally distributed, the ball valve is in a closed state, the ball body 20 in the ball valve is formed by alloy steel spray welding, the valve body 3 is formed by alloy steel overlaying welding, the double pressure of fluid in the valve body 3 and fluid outside the valve body can be borne, compared with nonmetal sealing, the metal sealing has better durability and sealing performance, and the bearing seat 15 and the limit rod 14 can further increase the stability of the ball 20 when rotating, preventing the ball from rotating under high pressure, the ball 20 deflects to affect its sealing performance, so that the ball valve has the advantages of deformation prevention and good sealing performance.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A metal-sealed ball valve, comprising a housing (1), characterized in that: the welding of the top of shell (1) has valve gap (2), valve body (3) have all been welded to the both sides of shell (1) inner chamber, the equal sliding connection in both sides of valve body (3) inner chamber has disk seat (4), the outside welding of disk seat (4) has spring (5), the inboard contact of disk seat (4) has spheroid (20), through-hole (6) have been seted up in the front of spheroid (20), through-hole (6) extend to the outside of spheroid (20), the top of spheroid (20) is seted up flutedly, and the inner wall joint of recess has kelly (7), the welding of the top of kelly (7) has valve rod (8), the top of valve rod (8) runs through valve gap (2) and extends to the outside of valve gap (2) through bearing housing (9).

2. A metal-sealing ball valve according to claim 1, wherein: valve body (3) are the design of cavity formula, the cross sectional area of the inside cavity of valve body (3) is the same with the cross sectional area of through-hole (6), the outer end and shell (1) intercommunication of valve body (3), spheroid (20) are formed for alloy steel spray welding, valve body (3) are formed for the alloy steel build-up welding, the radian on spheroid (20) surface is identical with the radian of the inboard of valve body (3).

3. A metal-sealing ball valve according to claim 1, wherein: the inner wall welding of shell (1) has baffle (10), the inboard grafting of baffle (10) has locating plate (11), the inner wall fixed mounting of locating plate (11) has sealed axle (12), the equal fixed mounting in both sides that the inner wall of locating plate (11) is located sealed axle (12) has sealing washer (13).

4. A metal-sealing ball valve according to claim 3, wherein: the surface at valve rod (8) is established in locating plate (11) cover, the inner wall of sealed axle (12) and the surface welding of valve rod (8), the surface in close contact with of the inner wall of sealing washer (13) and valve rod (8).

5. A metal-sealing ball valve according to claim 1, wherein: the bottom welding of spheroid (20) has gag lever post (14), the bottom bearing support of gag lever post (14) has bearing frame (15), the bottom of bearing frame (15) and the bottom welding of shell (1) inner chamber.

6. A metal-sealing ball valve according to claim 1, wherein: handle (16) have been cup jointed at the top of valve rod (8), the top threaded connection of handle (16) has location silk (17), the bottom of location silk (17) runs through valve rod (8) and extends to the inner wall threaded connection of the inner chamber of valve rod (8) and valve rod (8).

7. A metal-sealing ball valve according to claim 1, wherein: both sides of shell (1) all have welded pipe (18), the outside welding of pipe (18) has ring flange (19), the inboard and the shell (1) of pipe (18) are the feed through state.