CN216112297U

CN216112297U - Leak-proof ball valve with sealing performance

Info

Publication number: CN216112297U
Application number: CN202122724455.6U
Authority: CN
Inventors: 张雄杰; 张深哲; 范彩芬; 何恩惠; 王娟娟; 张和; 张崇垟; 钱佩佩
Original assignee: Aogong Valve Co ltd
Current assignee: Aogong Valve Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-03-22
Anticipated expiration: 2031-11-09

Abstract

The utility model relates to the field of ball valves, in particular to a sealing leakage-proof ball valve which comprises a left connector, a right connector, an intermediate, a ball body, a valve seat and an annular sealing ring b; the left connecting body and the right connecting body are both connected with the intermediate body, and annular grooves are formed in the opposite end faces of the left connecting body and the right connecting body; the ball body is provided with a conducting hole, the bottom of the ball body is provided with a lower valve rod, and the top of the ball body is vertically provided with an upper valve rod; the peripheral wall of the valve seat is attached to the wall of the annular groove, an annular sealing ring a is arranged on the valve seat, and a water inlet groove is arranged on the valve seat; the annular sealing ring b is arranged on the step groove wall of the annular groove; the strip-shaped groove is internally provided with a spring, and the end part of the spring is propped against the valve seat. In the utility model, the valve seat is extruded by the spring and the valve seat is extruded by liquid, so that the sealing effect is improved; and the sealing ring can be continuously sealed by adjusting the compression amount of the spring after being worn.

Description

Leak-proof ball valve with sealing performance

Technical Field

The utility model relates to the field of ball valves, in particular to a sealing leakage-proof ball valve.

Background

Many ball valve disk seat sealing force's production mode all realizes through spring and fluid pressure differential, but the disk seat receives the pressure face less, and has the fluid pressure differential of offsetting each other, has reduced the sealed effect that fluid pressure differential brought to a certain extent, in addition, along with the increase of spring live time and the sealing washer wearing and tearing on the disk seat, sealing performance descends, need change inside spring of ball valve and sealing washer, troublesome poeration.

Chinese patent No. CN208670123U discloses a leak-proof ball valve, which utilizes a spring to push a seal ring to compensate for the wear of the seal ring during use, thereby having a longer service life.

However, the above-mentioned known solutions have the following disadvantages: the continuous liquid flow through the spring can cause the spring to be corroded fast, causes the spring to promote the sealing washer inefficacy, can't deal with the wearing and tearing condition of sealing washer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the background art and provides a leak-proof ball valve with good sealing performance, which can quickly adjust the sealing performance of a sealing ring after the sealing ring is worn.

The technical scheme of the utility model is as follows: a leak-proof ball valve with sealing performance comprises a left connector, a right connector, an intermediate, a ball body, a valve seat and an annular sealing ring b;

the left connecting body and the right connecting body are respectively positioned on two sides of the intermediate body and are connected with the intermediate body, annular grooves are formed in the opposite end faces of the left connecting body and the right connecting body, openings are formed in the inner circumferential surfaces of the left connecting body and the right connecting body by the annular grooves, two groups of annular grooves form an intermediate cavity, and the section of each annular groove is step-shaped; the ball body is positioned in the middle cavity, a via hole is horizontally formed in the ball body, a lower valve rod is vertically arranged at the bottom of the ball body, the bottom of the lower valve rod is rotatably connected with the inner peripheral wall of the middle body, an upper valve rod is vertically arranged at the top of the ball body, the top of the upper valve rod penetrates through the middle body, and a handle is arranged at the top of the upper valve rod; the valve seats are revolved bodies, the two groups of valve seats are arranged, the two groups of valve seats are respectively positioned in the two groups of annular grooves, the outer peripheral wall of each valve seat is attached to the wall of each annular groove, an annular sealing ring a is arranged on each valve seat and is attached to the spherical wall of the sphere, annular water inlet grooves are arranged on the two groups of valve seats, and openings are formed in the inner peripheral walls of the valve seats by the water inlet grooves; the annular sealing ring b is arranged on the step groove wall of the annular groove, and the inner peripheral wall of the annular sealing ring b is attached to the horizontal step surface of the valve seat; the bar groove level sets up on two sets of ring channel cell walls, and the bar inslot sets up the spring, and the spring tip supports and leans on the disk seat, and the spring is in compression state, all is provided with the adjustment subassembly of adjustment spring compression on left connector and the right connector.

Preferably, the adjusting assembly comprises a bolt b and a limit plate; threaded holes are horizontally formed in the left connecting body and the right connecting body and communicated with the strip-shaped grooves, and openings are formed in the outer side faces of the threaded holes on the left connecting body and the right connecting body; the bolt b is matched with the threaded hole, and one end of the bolt b penetrates through the threaded hole and extends into the strip-shaped groove; the limiting plate is arranged on the groove wall of the strip-shaped groove in a transverse sliding mode, the spring is arranged on the limiting plate, the limiting plate is located between the bolt b and the spring, and the limiting plate is in contact with the end portion of the bolt b.

Preferably, the adjusting assemblies are arranged in multiple groups, and the multiple groups of adjusting assemblies are uniformly distributed along the circumference by taking the axis of the left connecting body as the center.

Preferably, the head of the bolt b has a regular hexagonal shape.

Preferably, the left connecting body and the middle body are connected through a plurality of groups of bolts a, and the right connecting body and the middle body are connected through a plurality of groups of bolts a.

Preferably, the handle is sleeved with an anti-slip sleeve.

Preferably, the annular sealing rings b are arranged in parallel on the horizontal step of the section of the annular groove.

Preferably, the groove wall edge of the water inlet groove is consistent with the outer edge of the valve seat in trend.

Compared with the prior art, the utility model has the following beneficial technical effects: the valve seat is extruded by the spring, so that the annular sealing ring b is tightly attached to the ball body, the sealing effect is achieved, meanwhile, no matter in a conducting or cutting state, the left side is set to be a water inlet end, the pressure on the left side is higher, liquid extrudes the left side surface of the valve seat, the liquid enters the water inlet groove, the contact area of the valve seat and the liquid is increased, the extrusion effect of the liquid on the valve seat is improved, the annular sealing ring b is further ensured to be tightly attached to the ball body, and the sealing effect is improved; when annular seal ring b takes place wearing and tearing or the spring uses for a long time elasticity to reduce, take place slightly to reveal, only need can increase the extrusion force between annular seal ring b and the spheroid through the compressive capacity of adjustment subassembly increase spring, just can continue to realize sealed after the adjustment.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a front cross-sectional view of FIG. 1;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

fig. 4 is a schematic structural diagram of the third embodiment.

Reference numerals: 1. a left connector; 2. a right connector; 3. an intermediate; 4. a bolt a; 5. a sphere; 6. a via hole; 7. a lower valve stem; 8. an upper valve stem; 9. a handle; 10. a valve seat; 11. a water inlet groove; 12. an annular sealing ring a; 13. an annular seal ring b; 14. an annular groove; 15. a strip-shaped groove; 16. a threaded hole; 17. a bolt b; 18. a limiting plate; 19. a spring.

Detailed Description

Example one

The utility model provides a sealing leakage-proof ball valve which comprises a left connector 1, a right connector 2, an intermediate 3, a ball 5, a valve seat 10 and an annular sealing ring b13, wherein the left connector and the right connector are connected through a connecting rod;

as shown in fig. 1-2, the left connecting body 1 and the right connecting body 2 are respectively located at two sides of the intermediate body 3 and are both connected with the intermediate body 3, the left connecting body 1 and the intermediate body 3 are connected through a plurality of groups of bolts a4, a plurality of groups of the right connecting body 2 and the intermediate body 3 are connected through bolts a4, annular grooves 14 are respectively arranged on the opposite end faces of the left connecting body 1 and the right connecting body 2, the annular grooves 14 form openings on the inner circumferential surfaces of the left connecting body 1 and the right connecting body 2, the two groups of annular grooves 14 form an intermediate cavity, and the section of the annular groove 14 is step-shaped; the ball body 5 is positioned in the middle cavity, the conducting hole 6 is horizontally arranged on the ball body 5, the lower valve rod 7 is vertically arranged at the bottom of the ball body 5, the bottom of the lower valve rod 7 is rotatably connected with the inner peripheral wall of the middle body 3, the upper valve rod 8 is vertically arranged at the top of the ball body 5, the top of the upper valve rod 8 penetrates through the middle body 3, the handle 9 is arranged at the top of the upper valve rod 8, and the anti-skid sleeve is sleeved on the handle 9;

as shown in fig. 3, the valve seat 10 is a revolving body, two sets of valve seats 10 are arranged, the two sets of valve seats 10 are respectively located in the two sets of annular grooves 14, the outer peripheral wall of the valve seat 10 is attached to the groove walls of the annular grooves 14, the valve seat 10 is provided with an annular sealing ring a12, the annular sealing ring a12 is attached to the spherical wall of the sphere 5, the two sets of valve seats 10 are both provided with annular water inlet grooves 11, the water inlet grooves 11 form openings on the inner peripheral wall of the valve seat 10, and the groove wall edges of the water inlet grooves 11 are in the same direction as the outer edge of the valve seat 10; the annular sealing rings b13 are arranged on the stepped groove wall of the annular groove 14, the inner peripheral wall of the annular sealing ring b13 is attached to the horizontal stepped surface of the valve seat 10, and the annular sealing rings b13 are arranged in parallel on the horizontal steps of the section of the annular groove 14; the bar-shaped groove 15 is horizontally arranged on the wall of the two groups of annular grooves 14, a spring 19 is arranged in the bar-shaped groove 15, the end part of the spring 19 is propped against the valve seat 10, the spring 19 is in a compression state, and the left connector 1 and the right connector 2 are respectively provided with an adjusting component for adjusting the compression amount of the spring 19

In this embodiment, the valve seat 10 is pressed by the spring 19, so that the annular sealing ring b13 is tightly attached to the ball 5, thereby achieving the sealing effect, and meanwhile, no matter in the on-state or the off-state, the left side is set as the water inlet end, so that the pressure on the left side is higher, the liquid presses the left side surface of the valve seat 10, the liquid enters the water inlet groove 11, the contact area between the valve seat 10 and the liquid is increased, the pressing effect of the liquid on the valve seat 10 is increased, the annular sealing ring b13 is further ensured to be tightly attached to the ball 5, and the sealing effect is increased; when the annular sealing ring b13 is worn or the spring 19 is used for a long time, the elastic force is reduced, slight leakage occurs, the extrusion force between the annular sealing ring b13 and the ball body 5 can be increased only by increasing the compression amount of the spring 19 through the adjusting assembly, and sealing can be continuously realized after adjustment.

Example two

As shown in fig. 3, compared with the first embodiment, the adjusting assembly of the leak-proof ball valve with sealing performance provided by the present invention comprises a bolt b17 and a limiting plate 18; threaded holes 16 are horizontally formed in the left connecting body 1 and the right connecting body 2, the threaded holes 16 are communicated with the strip-shaped grooves 15, and openings are formed in the outer side faces of the threaded holes 16 of the left connecting body 1 and the right connecting body 2; the bolt b17 is matched with the threaded hole 16, one end of the bolt b17 penetrates through the threaded hole 16 and extends into the strip-shaped groove 15, and the head of the bolt b17 is in a regular hexagon shape; the limiting plate 18 is arranged on the groove wall of the strip-shaped groove 15 in a sliding mode in the transverse direction, the spring 19 is arranged on the limiting plate 18, the limiting plate 18 is located between the bolt b17 and the spring 19, and the limiting plate 18 is in contact with the end portion of the bolt b 17; the adjusting components are arranged in a plurality of groups, and the adjusting components are uniformly distributed along the circumference by taking the axis of the left connector 1 as the center.

In this embodiment, promote limiting plate 18 through swivel bolt b17 and remove and can continue compression spring 19 to change the contact pressure of ring packing b13 and spheroid 5, guarantee that contact position department does not take place liquid and reveal, and adjustment operation is simple and convenient, can effectively prolong the life of ball valve.

EXAMPLE III

As shown in fig. 4, compared with the first embodiment, the leak-proof ball valve with sealing performance provided by the present invention has the advantages that the valve seat 10 in the right connector 2 is not provided with the water inlet groove 11, so that the leak-proof ball valve is suitable for a single-side water inlet state, and in the figure, water is fed from the left side, water is discharged from the right side, and water is fed from the left side, so that left-side sealing is achieved, and the difficulty in processing can be reduced by not providing the water inlet groove 11 on the right side.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A leak-proof ball valve with sealing performance is characterized by comprising a left connector (1), a right connector (2), an intermediate body (3), a ball body (5), a valve seat (10) and an annular sealing ring b (13);

the left connecting body (1) and the right connecting body (2) are respectively positioned on two sides of the intermediate body (3) and are connected with the intermediate body (3), annular grooves (14) are respectively formed in the opposite end faces of the left connecting body (1) and the right connecting body (2), openings are formed in the inner circumferential surfaces of the left connecting body (1) and the right connecting body (2) by the annular grooves (14), an intermediate cavity is formed by the two groups of annular grooves (14), and the section of each annular groove (14) is step-shaped; the ball body (5) is positioned in the middle cavity, the conducting hole (6) is horizontally formed in the ball body (5), the lower valve rod (7) is vertically arranged at the bottom of the ball body (5), the bottom of the lower valve rod (7) is rotatably connected with the inner peripheral wall of the middle body (3), the upper valve rod (8) is vertically arranged at the top of the ball body (5), the middle body (3) penetrates through the top of the upper valve rod (8), and the handle (9) is arranged at the top of the upper valve rod (8); the valve seats (10) are revolved bodies, two groups of valve seats (10) are arranged, the two groups of valve seats (10) are respectively positioned in the two groups of annular grooves (14), the peripheral wall of the valve seats (10) is attached to the groove wall of the annular grooves (14), the valve seats (10) are provided with annular sealing rings a (12), the annular sealing rings a (12) are attached to the ball wall of the ball body (5), the two groups of valve seats (10) are respectively provided with annular water inlet grooves (11), and the water inlet grooves (11) form openings on the inner peripheral wall of the valve seats (10); the annular sealing ring b (13) is arranged on the stepped groove wall of the annular groove (14), and the inner peripheral wall of the annular sealing ring b (13) is attached to the horizontal stepped surface of the valve seat (10); the strip-shaped groove (15) is horizontally arranged on the groove walls of the two groups of annular grooves (14), a spring (19) is arranged in the strip-shaped groove (15), the end part of the spring (19) is abutted against the valve seat (10), the spring (19) is in a compression state, and adjusting components for adjusting the compression amount of the spring (19) are arranged on the left connector (1) and the right connector (2).

2. The leak-proof ball valve for tightness according to claim 1, characterized in that the adjusting assembly comprises a bolt b (17) and a limit plate (18); threaded holes (16) are horizontally formed in the left connector (1) and the right connector (2), the threaded holes (16) are communicated with the strip-shaped groove (15), and openings are formed in the outer side faces of the threaded holes (16) of the left connector (1) and the right connector (2); the bolt b (17) is matched with the threaded hole (16), and one end of the bolt b (17) penetrates through the threaded hole (16) and extends into the strip-shaped groove (15); the limiting plate (18) is arranged on the groove wall of the strip-shaped groove (15) in a sliding mode along the transverse direction, the spring (19) is arranged on the limiting plate (18), the limiting plate (18) is located between the bolt b (17) and the spring (19), and the limiting plate (18) is in contact with the end portion of the bolt b (17).

3. The leak-proof ball valve of claim 2, wherein the adjusting assemblies are arranged in a plurality of groups, and the groups of adjusting assemblies are uniformly distributed along the circumference by taking the axis of the left connecting body (1) as the center.

4. The leak-proof ball valve for sealing according to claim 2, wherein the head of the bolt b (17) has a regular hexagonal shape.

5. The leak-proof ball valve with sealing property according to claim 1, wherein the left connecting body (1) and the middle body (3) are connected by a plurality of sets of bolts a (4), and the right connecting body (2) and the middle body (3) are connected by a plurality of sets of bolts a (4).

6. The leak-proof ball valve with sealing performance according to claim 1, characterized in that the handle (9) is sleeved with an anti-slip sleeve.

7. The leak-proof ball valve with sealing property according to claim 1, characterized in that the ring-shaped sealing rings b (13) are arranged in a plurality of groups in parallel on the horizontal step of the section of the ring-shaped groove (14).

8. The leak-proof ball valve with sealing performance according to claim 1, characterized in that the edge of the groove wall of the water inlet groove (11) is in the same direction with the outer edge of the valve seat (10).