CN221120995U

CN221120995U - Air-tight seal ball valve

Info

Publication number: CN221120995U
Application number: CN202322891907.9U
Authority: CN
Inventors: 张清慈; 苟会朝; 黄斌; 宋旭丹; 余芳芳; 苏跃雪
Original assignee: Zhejiang Chenggao Valve Co ltd
Current assignee: Zhejiang Chenggao Valve Co ltd
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-06-11
Anticipated expiration: 2033-10-26

Abstract

The utility model belongs to the technical field of valve manufacturing, in particular to an airtight ball valve, which comprises a valve seat, wherein a valve ball is rotationally connected to the valve seat, two sides of the upper end of the valve seat are provided with adjusting components, each adjusting component comprises a pointed L-shaped block penetrating through the upper end of a sliding valve seat, the lower end of each pointed L-shaped block is slidably connected with an L-shaped circular ring, the inclined edge of the lower end of each pointed L-shaped block is slidably connected with a pointed rack, one side of each pointed rack is fixedly connected with the valve seat through a telescopic rod, the lower end of each pointed rack is meshed with a gear, the lower end of each gear is meshed with a rack, one end of each rack is slidably connected with each L-shaped circular ring, one side of each L-shaped circular ring is provided with a first sealing ring, each first sealing ring is contacted with two sides of the valve ball, when the pressure in the ball valve is overhigh, each cylindrical bar drives a fixing block to upwards squeeze a circular ring through a cross block, and the circular ring further upwards squeezes a second sealing ring to prevent leakage caused by overhigh pressure.

Description

Air-tight seal ball valve

Technical Field

The utility model belongs to the technical field of valve manufacturing, and particularly relates to an airtight ball valve.

Background

The ball valve has the characteristics of simple structure, reliable sealing and convenient operation and maintenance, and is widely applied in the modern industrial field. The common ball valve is generally applied to occasions with low requirements on normal temperature, low pressure and tightness, but with the continuous development of modern process technology and material industry, the structure of the ball valve is continuously optimized and improved so as to meet the requirements of various practical working conditions, and the ball valve with various novel structures is widely applied to the fields of electric power, petrochemical industry, metallurgical steelmaking, water treatment, natural gas exploitation, offshore platform and the like due to the excellent performance, and plays an important role in pipelines for process control.

One patent application with the publication number of CN208089973U discloses a ball valve, which comprises a shell, an end cover arranged at one end of the shell, a valve seat seal accommodated in the shell, a ball valve body movably arranged in the valve seat seal and a handle connected to the ball valve body and capable of driving the ball valve body to rotate, wherein the shell comprises a cylindrical body and a connecting pipe which is formed by outwards extending one end of the body, one end of the body opposite to the connecting pipe is opened, a joint pipe is connected in a screwed manner, the bottom end of the shell is provided with a discharge hole communicated with the outside, the valve seat seal corresponds to a pipe hole of the connecting pipe and a pipe hole of the joint pipe, openings are arranged in the ball valve body, through holes which penetrate through two ends of the ball valve body and correspond to the openings of the valve seat seal are formed in the ball valve body, and residual fluid in the shell is discharged through the discharge hole, so that the residual fluid is prevented from affecting the service life gap of the ball valve.

In the prior art, the sealing ring is easy to age after long service time, has poor sealing effect and is easy to leak; when the pressure in the ball valve is too high, the ball valve cannot be further sealed in time and an alarm is sent out, so that workers are prompted to check the ball valve in time, and potential safety hazards caused by too high pressure are prevented.

To this end, the utility model provides a hermetically sealed ball valve.

Disclosure of utility model

In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.

The technical scheme adopted for solving the technical problems is as follows: the utility model discloses an airtight ball valve, which comprises a valve seat, wherein a valve ball is rotationally connected to the valve seat, two sides of the upper end of the valve seat are provided with adjusting components, each adjusting component comprises a pointed L-shaped block penetrating through the upper end of a sliding valve seat, the lower end of each pointed L-shaped block is connected with an L-shaped circular ring in a sliding manner, the inclined edge of the lower end of each pointed L-shaped block is connected with a pointed rack in a sliding manner, one side of each pointed rack is fixedly connected with the valve seat through a telescopic rod, the lower end of each pointed rack is meshed with a gear, the lower end of each gear is meshed with a rack, one end of each rack is connected with each L-shaped circular ring in a sliding manner, and one side of each L-shaped circular ring is provided with a first sealing ring which is contacted with two sides of the valve ball.

Preferably, the two sides of the upper end of the valve seat are rotationally connected with a screw rod, the screw rod is in threaded connection with a rectangular block, and one end of the rectangular block is fixedly connected with a pointed L-shaped block.

Preferably, the valve ball upper end fixedly connected with cylinder piece, valve ball upper end middle part is equipped with first round hole, the position that the cylinder piece corresponds first round hole is equipped with the second round hole, cylinder piece outside middle part is equipped with the ring groove, ring groove upper end is equipped with the second sealing washer, the second sealing washer lower extreme is equipped with the ring, the ring lower extreme has the cross piece through a plurality of fixed block rigid couplings all around, cross piece lower extreme passes through spring and ring groove lower extreme rigid coupling.

Preferably, the lower end of the circular groove is provided with a cross groove, the first round hole and the second round hole are connected with a cylindrical bar in a sliding mode, the upper end of the cylindrical bar is fixedly connected with a cross block, and the cross block can slide in the cross groove.

Preferably, a switch is arranged in the middle of the spring, and the upper end of the switch is fixedly connected with the cross block.

Preferably, the cylinder piece upper end fixedly connected with first plectane, first plectane lower extreme and disk seat rigid coupling, first plectane upper end is equipped with the arc wall, first plectane upper end rotates and is connected with the second plectane, the second plectane passes through the round pin axle and cylinder piece rigid coupling, second plectane lower extreme one side rigid coupling has circular slider, circular slider can slide in the arc wall.

The beneficial effects of the utility model are as follows:

1. According to the air-tight ball valve disclosed by the utility model, the sharp-end L-shaped block is pushed downwards, the sharp-end L-shaped block drives the L-shaped circular ring to push the first sealing ring, so that the first sealing ring is tightly attached to the valve ball, the sharp-end L-shaped block is pushed downwards, the sharp-end rack is driven to slide to one side to enable the telescopic rod to shrink, the gear is driven to rotate when the sharp-end rack slides, the gear is driven to slide to one side of the L-shaped circular ring to squeeze the first sealing ring, and the first sealing ring is simultaneously squeezed when the gear rotates, so that the first sealing ring is tightly attached to the valve ball to seal, and further leakage is prevented.

2. According to the airtight ball valve, when the pressure in the ball valve is too high, the pressure in the ball valve upwards extrudes the cylindrical bar, the cylindrical bar drives the fixed block to upwards extrude the circular ring through the cross block, and the circular ring further upwards extrudes the second sealing ring, so that leakage is prevented from being caused by excessive pressure.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a first embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a valve seat;

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

FIG. 4 is a schematic view of an explosion inside a valve ball;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

In the figure: 1. a valve seat; 2. a valve ball; 4. a first seal ring; 5. an L-shaped circular ring; 6. a screw rod; 7. rectangular blocks; 8. a pointed L-shaped block; 9. a pointed rack; 10. a telescopic rod; 11. a gear; 12. a rack; 14. a first round hole; 15. a cylindrical bar; 16. a cylindrical block; 17. circular ring grooves; 18. a cross groove; 19. a second seal ring; 20. a circular ring; 21. a fixed block; 22. a cross block; 23. a switch; 24. a spring; 25. a second round hole; 26. a first circular plate; 27. a second circular plate; 28. an arc-shaped groove; 29. a round slide block.

Detailed Description

The utility model is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Example 1

As shown in fig. 1-3, the airtight ball valve according to the embodiment of the utility model comprises a valve seat 1, a valve ball 2 is rotationally connected to the valve seat 1, two sides of the upper end of the valve seat 1 are provided with adjusting components, each adjusting component comprises a pointed L-shaped block 8 penetrating through the upper end of the sliding valve seat 1, the lower end of each pointed L-shaped block 8 is slidably connected with an L-shaped circular ring 5, the inclined edge of the lower end of each pointed L-shaped block 8 is slidably connected with a pointed rack 9, one side of each pointed rack 9 is fixedly connected with the valve seat 1 through a telescopic rod 10, the lower end of each pointed rack 9 is meshed with a gear 11, the lower end of each gear 11 is meshed with a rack 12, one end of each rack 12 is slidably connected with each L-shaped circular ring 5, one side of each L-shaped circular ring 5 is provided with a first sealing ring 4, and each first sealing ring 4 is contacted with two sides of the valve ball 2.

Specifically, ageing stiff phenomenon appears in the sealing washer after the ball valve live time easily, sealed effect is bad, push down sharp-end L shape piece 8 when the phenomenon of revealing appears, sharp-end L shape piece 8 drives L shape ring 5 and promotes first sealing washer 4, make first sealing washer 4 hug closely valve ball 2, push down sharp-end L shape piece 8 makes and drives sharp-end rack 9 to slide to one side and make telescopic link 10 shrink, drive gear 11 rotation when sharp-end rack 9 slides, drive rack 12 when gear 11 rotates and slide to push first sealing washer 4 two directions simultaneously to L shape ring 5 one side, make first sealing washer 4 hug closely valve ball 2 and seal and prevent further revealing.

As shown in fig. 3, two sides of the upper end of the valve seat 1 are rotatably connected with a screw rod 6, the screw rod 6 is in threaded connection with a rectangular block 7, and one end of the rectangular block 7 is fixedly connected with a pointed L-shaped block 8.

Specifically, the rotating screw rod 6 drives the pointed end L-shaped block 8 to slide downwards through the rectangular block 7, and the pointed end L-shaped block 8 is conveniently fixed by utilizing the self-locking property of the screw rod 6, so that the structure is simple and the operation is convenient.

Example two

As shown in fig. 4, in comparative example one, another embodiment of the present utility model is: the valve ball 2 upper end fixedly connected with cylinder piece 16, valve ball 2 upper end middle part is equipped with first round hole 14, the position that cylinder piece 16 corresponds first round hole 14 is equipped with second round hole 25, cylinder piece 16 outside middle part is equipped with ring groove 17, ring groove 17 upper end is equipped with second sealing washer 19, second sealing washer 19 lower extreme is equipped with ring 20, ring 20 lower extreme has cross piece 22 through a plurality of fixed block 21 rigid coupling all around, cross piece 22 lower extreme passes through spring 24 and ring groove 17 lower extreme rigid coupling.

Specifically, the valve ball 2 is driven to rotate by rotating the cylindrical block 16, the valve ball 2 is rotated to control the opening and closing of the ball valve, a second sealing ring 19 is arranged on the outer side of the cylindrical block 16, the fixed block 21 is driven by the cross block 22 to upwards extrude the circular ring 20 through the elasticity of the spring 24, the circular ring 20 extrudes the second sealing ring 19, the second sealing ring 19 is always clung to the cylindrical block 16, and the sealing effect is good.

As shown in fig. 4, the lower end of the circular groove 17 is provided with a cross groove 18, the first round hole 14 and the second round hole 25 are slidably connected with a cylindrical bar 15, the upper end of the cylindrical bar 15 is fixedly connected with a cross block 22, and the cross block 22 can slide in the cross groove 18.

Specifically, when the pressure in the ball valve is too high, the pressure in the ball valve upwards extrudes the cylindrical bar 15, the cylindrical bar 15 drives the fixed block 21 to upwards extrude the circular ring 20 through the cross block 22, and the circular ring 20 further upwards extrudes the second sealing ring 19, so that leakage caused by too high pressure is prevented.

As shown in fig. 5, a switch 23 is arranged in the middle of the spring 24, and the upper end of the switch 23 is fixedly connected with the cross block 22.

Specifically, when ball valve pressure is too high, cylinder strip 15 drives cross piece 22 and upwards moves trigger switch 23 when the distance is too big and send out the alarm, in time reminds the staff to look over before, reduces the potential safety hazard.

As shown in fig. 4, the upper end of the cylindrical block 16 is fixedly connected with a first circular plate 26, the lower end of the first circular plate 26 is fixedly connected with the valve seat 1, an arc groove 28 is formed in the upper end of the first circular plate 26, the upper end of the first circular plate 26 is rotatably connected with a second circular plate 27, the second circular plate 27 is fixedly connected with the cylindrical block 16 through a pin shaft, a circular sliding block 29 is fixedly connected to one side of the lower end of the second circular plate 27, and the circular sliding block 29 can slide in the arc groove 28.

Specifically, when the ball valve is controlled to be opened and closed, the second circular plate 27 is rotated to drive the cylindrical block 16 to rotate, the cylindrical block 16 drives the valve ball 2 to rotate to control the opening and closing, and when the second circular plate 27 is rotated, the circular sliding block 29 is driven to slide in the arc-shaped groove 28, so that the second circular plate 27 can only rotate 90 degrees to accurately control the rotation angle of the valve ball 2.

The working principle is that when the switch of the ball valve is controlled, the second circular plate 27 is rotated to drive the cylindrical block 16 to rotate, the cylindrical block 16 drives the valve ball 2 to rotate to control the switch, and when the second circular plate 27 is rotated, the circular sliding block 29 is driven to slide in the arc-shaped groove 28, so that the second circular plate 27 can only rotate 90 degrees to accurately control the rotation angle of the valve ball 2;

When the sealing ring is in leakage, the rotating screw rod 6 drives the pointed L-shaped block 8 to slide downwards through the rectangular block 7, the pointed L-shaped block 8 drives the L-shaped circular ring 5 to push the first sealing ring 4, the first sealing ring 4 is tightly attached to the valve ball 2, the pointed L-shaped block 8 is pushed downwards to drive the pointed rack 9 to slide to one side so as to enable the telescopic rod 10 to shrink, the gear 11 is driven to rotate when the pointed rack 9 slides, and the rack 12 is driven to slide to one side of the L-shaped circular ring 5 to simultaneously squeeze the first sealing ring 4 in two directions when the gear 11 rotates, so that the first sealing ring 4 is tightly attached to the valve ball 2 to seal so as to prevent further leakage;

when the pressure in the ball valve is increased, the pressure in the ball valve upwards extrudes the cylindrical bar 15, the cylindrical bar 15 drives the fixed block 21 to upwards extrude the circular ring 20 through the cross block 22, and the circular ring 20 further upwards extrudes the second sealing ring 19, so that leakage caused by overlarge pressure is prevented;

when the ball valve pressure is too high, the cylinder strip 15 drives the cross block 22 to move upwards to trigger the switch 23 to give an alarm when the distance is too large, so that workers are timely reminded to look over the ball valve, and potential safety hazards are reduced.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a gas seal ball valve which characterized in that: including disk seat (1), disk seat (1) internal rotation is connected with valve ball (2), disk seat (1) upper end both sides are equipped with adjusting part, adjusting part is including tip L shape piece (8) that runs through slide disk seat (1) upper end, tip L shape piece (8) lower extreme sliding connection has L shape ring (5), hypotenuse sliding connection of tip L shape piece (8) lower extreme has tip rack (9), tip rack (9) one side is through telescopic link (10) and disk seat (1) rigid coupling, tip rack (9) lower extreme meshing has gear (11), gear (11) lower extreme meshing has rack (12), rack (12) one end and L shape ring (5) sliding connection, L shape ring (5) one side is equipped with first sealing washer (4), first sealing washer (4) and valve ball (2) both sides contact.

2. The hermetically sealed ball valve of claim 1 wherein: the two sides of the upper end of the valve seat (1) are rotationally connected with a screw rod (6), the screw rod (6) is in threaded connection with a rectangular block (7), and one end of the rectangular block (7) is fixedly connected with a pointed L-shaped block (8).

3. The hermetically sealed ball valve of claim 1 wherein: the novel valve ball is characterized in that a cylindrical block (16) is fixedly connected to the upper end of the valve ball (2), a first round hole (14) is formed in the middle of the upper end of the valve ball (2), a second round hole (25) is formed in the position, corresponding to the first round hole (14), of the cylindrical block (16), a circular groove (17) is formed in the middle of the outer side of the cylindrical block (16), a second sealing ring (19) is arranged at the upper end of the circular groove (17), a circular ring (20) is arranged at the lower end of the second sealing ring (19), a cross block (22) is fixedly connected to the periphery of the lower end of the circular ring (20) through a plurality of fixing blocks (21), and the lower end of the cross block (22) is fixedly connected with the lower end of the circular groove (17) through a spring (24).

4. A gas-tight ball valve according to claim 3, wherein: the circular ring groove (17) lower extreme is equipped with cross groove (18), first round hole (14) and second round hole (25) sliding connection have cylinder strip (15), cylinder strip (15) upper end and cross piece (22) rigid coupling, cross piece (22) can slide in cross groove (18).

5. A gas-tight ball valve according to claim 3, wherein: the middle part of the spring (24) is provided with a switch (23), and the upper end of the switch (23) is fixedly connected with the cross block (22).

6. The air-tight ball valve according to claim 4, wherein: the cylinder piece (16) upper end rigid coupling has first round plate (26), first round plate (26) lower extreme and disk seat (1) rigid coupling, first round plate (26) upper end is equipped with arc wall (28), first round plate (26) upper end rotates and is connected with second round plate (27), second round plate (27) are through round pin axle and cylinder piece (16) rigid coupling, second round plate (27) lower extreme one side rigid coupling has circular slider (29), circular slider (29) can slide in arc wall (28).