CN220060613U

CN220060613U - Spring-loaded ball valve seal structure

Info

Publication number: CN220060613U
Application number: CN202321046731.0U
Authority: CN
Inventors: 吴剑
Original assignee: Wuxi City Ree Ball Technology Co ltd
Current assignee: Wuxi City Ree Ball Technology Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-11-21
Anticipated expiration: 2033-05-05

Abstract

The utility model discloses a spring-loaded ball valve sealing structure, and relates to the technical field of valves. According to the valve body, the valve cover, the O-shaped ring and the ball body, the ball body is arranged in the cavity in the valve cover, limiting grooves are formed in one end of the valve body and one end of the inner portion of the valve cover in a concave mode, the O-shaped ring is arranged in the limiting grooves in a sliding mode, and sealing mechanisms are arranged in the valve body and the inner portion of the valve cover. According to the utility model, when the O-shaped ring is worn, the O-shaped ring can be pushed to move by the elasticity of the pressurizing spring, so that the O-shaped ring is closely attached to the ball again, and meanwhile, by arranging the adjusting unit, after the compression amount of the pressurizing spring is changed to a certain extent, a worker can drive the pressurizing ring to move by rotating the screw rod to enable the screw rod to be in threaded linkage, and the pressurizing ring is used for extruding the pressurizing spring again to enable the pressurizing ring to contract, so that the sealing effect is further improved, and the practicability of the whole sealing structure is greatly improved.

Description

Spring-loaded ball valve seal structure

Technical Field

The utility model relates to the technical field of valves, in particular to a spring-loaded ball valve sealing structure.

Background

Ball valves are widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, take a significant role in national economy, the ball valves are provided with spheres, the functions of opening or closing a medium passage are realized mainly through rotating the spheres, the functions of cutting off, distributing and changing the medium flowing direction can be realized, and the valve seat seal is an important component part of the valve seat of the ball, so that the valve seat sealing performance is ensured.

However, the existing ball valve sealing structure still has a certain degree of problem, for example, the existing ball valve sealing structure generally adopts an O-shaped ring arranged in a valve body to form a sealing effect on the ball valve, the O-shaped ring can generate a certain degree of abrasion after being used for a long time, a gap is generated between the O-shaped ring and the ball valve, and then the sealing effect is lost.

Disclosure of Invention

The utility model adopts the following technical scheme for realizing the purposes:

the utility model provides a spring-loaded ball valve seal structure, includes valve body, valve gap, O shape circle and spheroid, and the valve gap passes through bolted connection in one side of valve body to constitute the body construction of ball valve jointly, the spheroid sets up in the inside cavity of valve gap, and valve body and the inside one end of valve gap all are the indent and are provided with the spacing groove, and O shape circle slides and sets up in the spacing inslot, and is located the spheroid both sides to all with spheroid butt, the inside of valve body and valve gap all is provided with sealing mechanism, sealing mechanism includes pressure unit and adjusting unit.

Further, the pressurizing unit comprises a pressurizing ring and a pressurizing spring, the pressurizing ring is connected in the limiting groove in a sliding mode, and the pressurizing spring is arranged between the pressurizing ring and the O-shaped ring and is in an extrusion shrinkage state.

Further, the adjusting unit comprises a first supporting frame, a screw rod and a second supporting frame, wherein the first supporting frame and the second supporting frame are of cross-shaped structures, one supporting frame is respectively fixed in an inner cavity of the valve body and the valve cover, a screw hole is formed in the center of the supporting frame in a penetrating mode, the second supporting frame is fixed at the center of the pressurizing ring, the screw rod is in threaded connection with the screw hole of the first supporting frame, and one end of the screw rod is in rotary connection with the center of the second supporting frame.

Further, a sliding groove with a bar-shaped structure is arranged in the limiting groove, a sliding rod is fixed on the side wall of the pressurizing ring, and the sliding rod is in sliding clamping connection with the sliding groove.

Further, the opposite surfaces of the pressurizing ring and the O-shaped ring are concave notches with annular structures, and two ends of the pressurizing spring are clamped between two adjacent notches.

Further, the inner wall of the screw hole of the first support frame is slidably connected with a positioning rod, a spring is arranged between the positioning rod and the first support frame, a positioning hole is formed in the outer wall of the screw rod in a concave mode, and the positioning rod is clamped in the positioning hole.

Further, the whole screw rod is made of stainless steel materials to form a cylindrical structure, and sand blasting is performed on the surface of the screw rod.

The beneficial effects of the utility model are as follows:

1. according to the utility model, when the O-shaped ring is worn, the O-shaped ring can be pushed to move by the elasticity of the pressurizing spring, so that the O-shaped ring is closely attached to the ball again, a gap generated by the wear is eliminated, leakage is avoided, and meanwhile, after the compression amount of the pressurizing spring is changed to a certain extent, a worker can drive the pressurizing ring to move by rotating the screw rod to enable the screw rod to be in threaded linkage, and the pressurizing ring is pushed to compress the pressurizing spring again to enable the pressurizing ring to contract, so that the sealing effect is further improved, and the overall practicability of the sealing structure is greatly improved.

2. When the adjusting unit is used, the positioning rod is arranged to be in butt joint with the positioning hole at the proper position on the screw rod, so that the locking effect on the screw rod is realized, and the influence on the sealing performance of the whole sealing structure caused by rotation of the screw rod in an unnecessary adjusting state is avoided.

Drawings

FIG. 1 is a schematic view of the overall cross-sectional structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a valve cover according to the present utility model;

FIG. 3 is a schematic view of the structure of the pressurizing unit of the present utility model;

FIG. 4 is a schematic diagram of the structure of the regulating unit of the present utility model;

reference numerals: 1. a valve body; 2. a valve cover; 3. a limit groove; 4. a chute; 5. a pressurizing ring; 6. a slide bar; 7. a pressurizing spring; 8. an O-ring; 9. a first support frame; 10. a screw rod; 11. positioning holes; 12. a positioning rod; 13. a second support frame; 14. and (3) a sphere.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-4, a spring-loaded ball valve sealing structure comprises a valve body 1, a valve cover 2, an O-ring 8 and a ball 14, wherein the valve cover 2 is connected to one side of the valve body 1 through bolts and jointly forms a main structure of the ball valve, the ball 14 is arranged in an inner cavity of the valve cover 2, limiting grooves 3 are formed in the inner ends of the valve body 1 and the valve cover 2 in a concave manner, the O-ring 8 is slidably arranged in the limiting grooves 3 and positioned on two sides of the ball 14 and is abutted to the ball 14, sealing mechanisms are arranged in the valve body 1 and the valve cover 2, the sealing mechanisms comprise a pressurizing unit and an adjusting unit, specifically, the penetration of an inner cavity of the integral structure of the valve body 1 and the valve cover 2 is controlled through the rotation of the ball 14, the sealing effect is achieved through the tight adhesion of the O-ring 8 and the ball 14, leakage of liquid from a gap between the ball 14 and the ball valve is avoided, and when the ball 14 rotates to cause the O-ring 8 to wear, the sealing effect can be always tightly adhered to the ball 14 through the combination of the pressurizing unit and the adjusting unit.

As shown in fig. 1 to 3, in some embodiments, the pressurizing unit includes a pressurizing ring 5 and a pressurizing spring 7, the pressurizing ring 5 is slidably connected in the limiting groove 3, the pressurizing spring 7 is disposed between the pressurizing ring 5 and the O-ring 8 and is in an extrusion shrinkage state, specifically, when the O-ring 8 is worn, the pressurizing spring 7 correspondingly stretches and pushes the O-ring 8 to move, so that the pressurizing ring is closely attached to the ball 14 again, a gap generated due to wear is eliminated, and leakage is avoided.

As shown in fig. 1-4, in some embodiments, the adjusting unit includes a first supporting frame 9, a screw rod 10 and a second supporting frame 13, where the first supporting frame 9 and the second supporting frame 13 are in a cross-shaped structure, one supporting frame 9 is fixed in the internal cavities of the valve body 1 and the valve cover 2 respectively, a screw hole is arranged at the center of the supporting frame, the second supporting frame 13 is fixed at the center of the pressurizing ring 5, the screw rod 10 is in threaded connection in the screw hole of the first supporting frame 9, one end of the screw rod 10 is in rotary connection at the center of the second supporting frame 13, specifically, after the pressurizing spring 7 stretches to a certain extent, the screw rod 10 is rotated to make the screw rod 10 in threaded linkage, so that the pressurizing ring 5 is driven to move, the pressurizing spring 7 is compressed again by the pressurizing ring 5, and the sealing effect is further improved.

As shown in fig. 2, in some embodiments, a chute 4 with a bar structure is arranged in the limiting groove 3, a sliding rod 6 is fixed on the side wall of the pressing ring 5, and the sliding rod 6 is slidably clamped in the chute 4 to limit the pressing ring 5, so that the pressing ring 5 is prevented from synchronously rotating with the screw 10 when the screw 10 rotates.

As shown in fig. 3, in some embodiments, opposite surfaces of the pressurizing ring 5 and the O-ring 8 are concave and provided with notches with annular structures, and two ends of the pressurizing spring 7 are clamped between two adjacent notches, so that the pressurizing spring 7 is limited, and the position between the pressurizing ring 5 and the O-ring 8 is prevented from being changed.

As shown in fig. 4, in some embodiments, a positioning rod 12 is slidably connected to an inner wall of a screw hole of the first support frame 9, a spring is disposed between the positioning rod 12 and the first support frame 9, a positioning hole 11 is disposed on an outer wall of the screw rod 10 in a concave manner, the positioning rod 12 is clamped in the positioning hole 11, and the screw rod 10 is locked by the positioning rod 12, so that the screw rod 10 is prevented from rotating in an unnecessary adjustment state.

As shown in fig. 4, in some embodiments, the screw 10 is integrally made of stainless steel material to form a cylindrical structure, and the surface of the screw is sandblasted to avoid corrosion of the screw 10.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a spring-loaded ball valve seal structure, includes valve body (1), valve gap (2), O shape circle (8) and spheroid (14), its characterized in that, valve gap (2) pass through bolted connection in one side of valve body (1) to constitute the major structure of ball valve jointly, spheroid (14) set up in the inside cavity of valve gap (2), valve body (1) and the inside one end of valve gap (2) all are indent and are provided with spacing groove (3), O shape circle (8) slip sets up in spacing groove (3), and are located spheroid (14) both sides to all with spheroid (14) butt, the inside of valve body (1) and valve gap (2) all is provided with sealing mechanism, sealing mechanism includes pressure unit and regulating unit, be provided with spout (4) of bar structure in spacing groove (3).

2. The spring-loaded ball valve sealing structure according to claim 1, wherein the pressurizing unit comprises a pressurizing ring (5) and a pressurizing spring (7), the pressurizing ring (5) is connected in a sliding manner in the limiting groove (3), and the pressurizing spring (7) is arranged between the pressurizing ring (5) and the O-shaped ring (8) and is in a compression state.

3. The spring-loaded ball valve sealing structure according to claim 1, wherein the adjusting unit comprises a first supporting frame (9), a screw rod (10) and a second supporting frame (13), the first supporting frame (9) and the second supporting frame (13) are of a cross-shaped structure, the supporting frame (9) is respectively fixed in the inner cavities of the valve body (1) and the valve cover (2), a screw hole penetrates through the center of the supporting frame, the second supporting frame (13) is fixed at the center of the pressurizing ring (5), the screw rod (10) is in threaded connection with the screw hole of the first supporting frame (9), and one end of the screw rod is rotationally connected with the center of the second supporting frame (13).

4. The spring-loaded ball valve sealing structure according to claim 2, wherein a sliding rod (6) is fixed on the side wall of the pressurizing ring (5), and the sliding rod (6) is in sliding clamping connection with the sliding groove (4).

5. The spring-loaded ball valve sealing structure according to claim 2, wherein the opposite surfaces of the pressurizing ring (5) and the O-ring (8) are provided with notches in an inward concave manner, and two ends of the pressurizing spring (7) are clamped between two adjacent notches.

6. A spring-loaded ball valve sealing structure according to claim 3, wherein the inner wall of the screw hole of the first support frame (9) is slidably connected with a positioning rod (12), a spring is arranged between the positioning rod (12) and the first support frame (9), a positioning hole (11) is formed in the outer wall of the screw rod (10) in a concave manner, and the positioning rod (12) is clamped in the positioning hole (11).

7. A spring-loaded ball valve seal according to claim 3, wherein the screw (10) is integrally formed of stainless steel material to form a cylindrical structure, and the surface thereof is sandblasted.