CN212718141U

CN212718141U - Ball valve rod mounting structure

Info

Publication number: CN212718141U
Application number: CN202021528247.8U
Authority: CN
Inventors: 顾德; 江武明; 陆剑
Original assignee: Shanghai Kaite Valve Manufacture Co ltd
Current assignee: Shanghai Kaite Valve Manufacture Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-16
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a ball valve rod mounting structure relates to valve body structure technical field, and it includes the valve body, the mounting groove has been seted up in the valve body, the mounting groove internal rotation is provided with spheroid opening and closing piece, the valve body is located the top that spheroid opened and closing piece and sets up the rotation groove that is linked together with the mounting groove, it has the sleeve to rotate the inslot through threaded connection, the interpolation is provided with and is used for driving spheroid opening and closing piece pivoted valve rod in the sleeve, be provided with first seal assembly between the inner wall in sleeve and rotation groove, be provided with second seal assembly between valve rod and the telescopic inner wall, just be provided with between sleeve and the valve body and be used for fixing the fixed subassembly on the valve body with the sleeve. The utility model discloses utilize the fixed subassembly that sets up between sleeve and the valve body, fix the sleeve on the valve body to prevent to take place relative rotation between valve rod and the sleeve, reduce the sleeve and rotate and take place wearing and tearing between the inslot wall, have good leakproofness with guaranteeing to have between sleeve and the rotation inslot wall.

Description

Ball valve rod mounting structure

Technical Field

The utility model belongs to the technical field of the valve body structure technique and specifically relates to a ball valve rod mounting structure is related to.

Background

The ball valve is a valve in which a ball opening and closing piece is driven by a valve rod and rotates around a rotating axis which is vertical to the flowing direction of liquid.

Among the prior art, to the installation of valve rod, there is the sleeve often through threaded connection between valve rod and valve body to all set up the sealing member between sleeve and valve body, valve rod and sleeve, in order to reduce the damage that the rotation of valve rod caused the valve body.

By adopting the scheme, a user can drive the ball opening and closing piece to rotate only by rotating the valve rod; however, when the valve rod is rotated, relative rotation may occur between the valve rod and the sleeve, and after long-time use, the sleeve loosens relative to the valve body to generate abrasion, which affects the sealing performance of the joint of the sleeve and the valve body.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims to provide a ball valve rod mounting structure utilizes the fixed subassembly that sets up between sleeve and the valve body, fixes the sleeve on the valve body to prevent that the sleeve from taking place not hard up, reduce the wearing and tearing that take place between sleeve and the valve body junction, have good leakproofness with guaranteeing to have between sleeve and the rotation inslot wall.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a ball valve rod mounting structure, includes the valve body, the mounting groove has been seted up in the valve body, the mounting groove internal rotation is provided with spheroid opening and closing member, the valve body is located the top that spheroid opening and closing member and sets up the rotation groove that is linked together with the mounting groove, it has the sleeve to rotate the inslot through threaded connection, the interpolation is provided with and is used for driving spheroid opening and closing member pivoted valve rod in the sleeve, be provided with first seal assembly between the inner wall in sleeve and rotation groove, be provided with the second seal assembly between valve rod and the telescopic inner wall, just be provided with between sleeve and the valve body and be used for fixing the fixed subassembly on the valve body with.

Through adopting above-mentioned technical scheme, in-service use utilizes the fixed subassembly that sets up between sleeve and the valve body, fixes the sleeve on the valve body to prevent when rotating the valve rod, take place relative rotation between valve rod and the sleeve, and then reduce sleeve and rotate and take place wearing and tearing between the inslot wall, have good leakproofness with guaranteeing to have between sleeve and the rotation inslot wall.

The present invention may be further configured in a preferred embodiment as: the fixed component comprises a positioning pin, a limit stop is arranged on the sleeve and is abutted to the notch of the rotating groove, a positioning hole is formed in the limit stop, a limiting hole coaxial with the positioning hole is formed in the valve body, and the positioning pin is sequentially inserted into the positioning hole and the limiting hole.

Through adopting above-mentioned technical scheme, in-service use, peg graft the locating pin in locating hole and spacing downthehole in proper order, the locating pin is equivalent to the effect of joint key promptly, fixes the sleeve joint on the valve body, fixed mode simple convenient and fast.

The present invention may be further configured in a preferred embodiment as: the locating pin is in interference fit with the limiting hole.

Through adopting above-mentioned technical scheme, be interference fit setting with locating pin and spacing hole, and then improve the fastening nature of locating pin in spacing downthehole, and then improve the fastening nature of sleeve on the valve body.

The present invention may be further configured in a preferred embodiment as: the fixing assembly comprises an elastic anti-release piece, and two opposite sides of the elastic anti-release piece are respectively abutted between the limit stop and the valve body.

Through adopting above-mentioned technical scheme, utilize elasticity anticreep piece, play the effect of anticreep to the sleeve, play the effect of fastening to the sleeve promptly in vertical direction.

The present invention may be further configured in a preferred embodiment as: the first sealing assembly comprises a first sealing ring, a first embedding groove is formed in the outer wall of the sleeve, and the first sealing ring is fixedly embedded in the first embedding groove.

Through adopting above-mentioned technical scheme, utilize the fixed first sealing washer of establishing in first groove of establishing of inlaying to improve the leakproofness between sleeve and the rotation inslot wall.

The present invention may be further configured in a preferred embodiment as: the second sealing assembly comprises a second sealing ring, a second embedding groove is formed in the outer wall of the valve rod in the scattering Korea, and the second sealing ring is fixedly embedded in the second embedding groove.

Through adopting above-mentioned technical scheme, utilize the fixed second sealing washer of establishing in the second inlays establishes the groove to improve the leakproofness between valve rod and the sleeve inner wall.

The present invention may be further configured in a preferred embodiment as: a limiting block is arranged on one side, close to the ball opening and closing piece, of the valve rod, and a stepped stop block used for limiting the limiting block is formed between the rotating groove and the mounting groove.

Through adopting above-mentioned technical scheme, utilize the limiting displacement of ladder dog to the stopper machine, and then prevent that the valve rod from droing in the vertical direction from rotating the inslot.

The present invention may be further configured in a preferred embodiment as: and a second sealing gasket is arranged between the bottom of the sleeve and the limiting block.

Through adopting above-mentioned technical scheme, utilize the second seal gasket that sets up between telescopic bottom and the stopper, seal the junction of sleeve and valve rod, improve this mounting structure's leakproofness.

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

the sleeve is fixed on the valve body by utilizing the fixing component arranged between the sleeve and the valve body so as to prevent the sleeve from loosening, reduce the abrasion generated between the sleeve and the joint of the valve body and ensure good sealing property between the sleeve and the inner wall of the rotating groove;

the first sealing ring, the second sealing ring and the second sealing gasket are comprehensively utilized, and the sealing performance between the sleeve and the inner wall of the rotating groove, between the valve rod and the inner wall of the sleeve, and between the sleeve and the valve rod is improved.

Drawings

Fig. 1 is a sectional view mainly showing the overall structure of a ball valve stem mounting structure in the present embodiment;

fig. 2 is an enlarged view of a portion a of fig. 1, and mainly shows the structure of the fixing member, the first sealing member and the second sealing member.

Reference numerals: 1. a valve body; 11. mounting grooves; 12. a rotating groove; 13. a limiting hole; 14. a step stopper; 2. a ball opening and closing member; 21. a clamping groove; 3. a sleeve; 31. a first embedding groove; 4. a valve stem; 41. a limit stop block; 411. positioning holes; 42. a second embedding groove; 43. a third embedding groove; 44. a limiting block; 5. a first seal assembly; 51. a first seal ring; 6. a second seal assembly; 61. a second seal ring; 62. a first sealing gasket; 7. a fixing assembly; 71. positioning pins; 72. an elastic anti-drop member; 8. a second sealing gasket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a ball valve rod mounting structure includes a valve body 1, a mounting groove 11 is formed in the valve body 1, a ball opening and closing member 2 is rotatably disposed in the mounting groove 11, a rotating groove 12 communicated with the mounting groove 11 is formed in an upper side of the valve body 1 in a vertical direction of the mounting groove 11, a sleeve 3 is connected in the rotating groove 12 through a thread, a valve rod 4 for driving the ball opening and closing member 2 to rotate is inserted and disposed in the sleeve 3, a clamping groove 21 is formed in an upper side of the ball opening and closing member 2 in the vertical direction, and a bottom end of the valve rod 4 is embedded in the clamping groove 21; a first sealing assembly 5 is arranged between the sleeve 3 and the inner wall of the rotating groove 12, a second sealing assembly 6 is arranged between the valve rod 4 and the inner wall of the sleeve 3, and a fixing assembly 7 used for fixing the sleeve 3 on the valve body 1 is arranged between the sleeve 3 and the valve body 1.

In actual use, utilize the fixed subassembly 7 that sets up between sleeve 3 and the valve body 1, fix sleeve 3 on valve body 1 to prevent to take place relative rotation between valve stem 4 and the sleeve 3, reduce and take place wearing and tearing between sleeve 3 and the groove 12 inner wall that rotates, in order to guarantee to have good leakproofness between sleeve 3 and the groove 12 inner wall that rotates.

The fixing component 7 comprises a positioning pin 71 and an elastic anti-falling part 72, a limiting stopper 41 is integrally formed at the upper end of the sleeve 3 in the vertical direction, the limiting stopper 41 abuts against the notch of the rotating groove 12, a positioning hole 411 is vertically formed in the limiting stopper 41, a limiting hole 13 which is coaxial with the positioning hole 411 is formed in the valve body 1, the positioning pin 71 is sequentially inserted into the positioning hole 411 and the limiting hole 13, and the positioning pin 71 and the limiting hole 13 are in interference fit; the elastic anti-falling piece 72 is arranged as an anti-falling gasket, the anti-falling gasket is arranged between the limit stop 41 and the valve body 1, and two sides of the anti-falling gasket in the vertical direction are respectively abutted between the limit stop 41 and the valve body 1.

In practical use, the positioning pin 71 is sequentially inserted into the positioning hole 411 and the limiting hole 13 and is tightly connected with the limiting hole 13, so that the sleeve 3 is prevented from rotating relative to the valve rod 4; the tightness between the sleeve 3 and the inner wall of the rotation groove 12 is improved in the vertical direction by the anti-slip washer.

First seal assembly 5 includes first sealing washer 51, first sealing washer 51 is provided with two, the outer wall of sleeve 3 has been seted up first and has been inlayed and establish groove 31, correspond the quantity of first sealing washer 51, first groove 31 of establishing of inlaying is provided with two, two first grooves 31 of establishing of inlaying are upper and lower setting on sleeve 3, and two first grooves 31 of establishing of inlaying all are located the downside of sleeve 3 with rotation 12 threaded connection departments of groove, two first sealing washers 51 are fixed respectively and are inlayed and establish in two first grooves 31 of establishing, and then seal between the inner wall to sleeve 3 and rotation 12.

The second sealing assembly 6 comprises two second sealing rings 61 and two first sealing gaskets 62, the outer wall of the valve rod 4 is provided with two second embedding grooves 42, the number of the second embedding grooves 42 is two corresponding to the number of the second sealing rings 61, the two second embedding grooves 42 are arranged on the valve rod 4 in an up-and-down mode, and the two second sealing rings 61 are fixedly embedded in the two second embedding grooves 42 respectively; still seted up the third on the outer wall of valve rod 4 and inlayed and establish groove 43, the second inlays the position of establishing groove 42 and is close to the top of valve rod 4 and be located the upside that two seconds inlayed and establish groove 42, and first seal gasket 62 is fixed to be inlayed and is established in the third inlays and establish groove 43, and then seals the junction between sleeve 3 inner wall and the valve rod 4.

One side integrated into one piece stopper 44 that valve rod 4 is close to spheroid opening and closing piece 2, valve body 1 is located to be formed with between rotating groove 12 and the mounting groove 11 and is used for carrying on spacing ladder dog 14 to stopper 44 for rotating groove 12 and being the reverse T type setting from top to bottom, in order to prevent that valve rod 4 breaks away from sleeve 3.

A second sealing gasket 8 is arranged between the bottom end of the sleeve 3 and the limiting block 44 in a butt joint mode, and the joint of the sleeve 3 and the valve rod 4 is sealed.

The implementation principle of the embodiment is as follows:

in practical use, the positioning pin 71 is sequentially inserted into the positioning hole 411 and the limiting hole 13 and is tightly connected with the limiting hole 13 to prevent the sleeve 3 from rotating relative to the valve rod 4, and meanwhile, the tightness between the sleeve 3 and the inner wall of the rotating groove 12 is improved in the vertical direction by using the anti-dropping gasket;

and the sealing performance between the sleeve 3 and the inner wall of the rotating groove 12, between the valve rod 4 and the inner wall of the sleeve 3 and between the sleeve 3 and the valve rod 4 is improved by utilizing the first sealing component 5, the second sealing component 6 and the second sealing gasket 8.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The ball valve rod mounting structure is characterized by comprising a valve body (1), wherein a mounting groove (11) is formed in the valve body (1), a ball opening and closing piece (2) is rotationally arranged in the mounting groove (11), a rotating groove (12) communicated with the mounting groove (11) is arranged above the ball opening and closing piece (2) of the valve body (1), a sleeve (3) is connected in the rotating groove (12) through threads, a valve rod (4) for driving the ball opening and closing piece (2) to rotate is inserted in the sleeve (3), a first sealing component (5) is arranged between the sleeve (3) and the inner wall of the rotating groove (12), a second sealing component (6) is arranged between the valve rod (4) and the inner wall of the sleeve (3), and a fixing component (7) used for fixing the sleeve (3) on the valve body (1) is arranged between the sleeve (3) and the valve body (1).

2. The ball valve rod mounting structure according to claim 1, wherein the fixing component (7) comprises a positioning pin (71), the sleeve (3) is provided with a limit stop (41), the limit stop (41) abuts against the notch of the rotating groove (12), the limit stop (41) is provided with a positioning hole (411), the valve body (1) is provided with a limit hole (13) coaxially arranged with the positioning hole (411), and the positioning pin (71) is sequentially inserted into the positioning hole (411) and the limit hole (13).

3. A ball valve stem mounting structure according to claim 2, wherein the positioning pin (71) is interference-fitted with the stopper hole (13).

4. A ball valve stem mounting structure according to claim 3, wherein the fixing assembly (7) comprises an elastic anti-release member (72), and two opposite sides of the elastic anti-release member (72) respectively abut against between the limit stop (41) and the valve body (1).

5. The ball valve stem mounting structure according to claim 1, wherein the first sealing assembly (5) comprises a first sealing ring (51), the outer wall of the sleeve (3) is provided with a first embedding groove (31), and the first sealing ring (51) is fixedly embedded in the first embedding groove (31).

6. A ball valve stem mounting structure according to claim 1, wherein the second seal assembly (6) comprises a second seal ring (61), a second fitting groove (42) is formed in an outer wall of the valve stem (4) scattered in korea, and the second seal ring (61) is fixedly fitted in the second fitting groove (42).

7. A ball valve stem mounting structure according to claim 1, wherein a stopper (44) is provided on a side of the valve stem (4) adjacent to the ball opening and closing member (2), and a step stopper (14) for stopping the stopper (44) is formed between the rotation groove (12) and the mounting groove (11).

8. A ball valve stem mounting arrangement according to claim 7, wherein a second sealing gasket (8) is provided between the bottom of the sleeve (3) and the stop block (44).