CN111720576A - Top-mounted efficient ball valve capable of being maintained on line - Google Patents

Abstract

An upper-mounted efficient ball valve capable of being maintained on line comprises a valve body, a ball body, a valve rod and a valve seat, wherein the ball body and a fastening device are arranged inside the valve body; the fastening device comprises a fixed supporting ring, a first limiting ring, a second limiting ring and a closed ring, a plurality of symmetrical fixing blocks are arranged on the fixed supporting ring and the closed ring, the two symmetrical fixing blocks are connected through springs, the first limiting ring and the second limiting ring are respectively fixedly connected with the fixed supporting ring and the closed ring through fixing nuts and fixing screw sleeves, a sliding ring is arranged on the first limiting ring, a sliding groove is formed in the inner wall of the closed ring, and the sliding ring is placed in the sliding groove. By adopting the structure, the ball body in the ball valve is reinforced from two directions by utilizing the elasticity of the spring in the fastening device, so that the ball valve is convenient to maintain, install and disassemble on line, the working effect of the whole valve in the using process is improved, the sealing performance is good, and the adjustment is convenient; the whole device is simple in structure, convenient to use and high in practicability.

Description

A high-efficiency top-loading ball valve that can be repaired online

technical field

The invention relates to the field of valves, in particular to a top-loading high-efficiency ball valve that can be repaired online.

Background technique

The valve is a control component in the fluid conveying system, which has the functions of cut-off, regulation, diversion, prevention of backflow, voltage stabilization, diversion or overflow and pressure relief. There are quite a lot of types and specifications of valves, from the simplest globe valve to various valves used in extremely complex automatic control systems, among which, ball valves are widely used. In order to ensure good sealing performance, the existing ball valve bodies are mostly welded into a whole. Although such ball valves have good sealing performance, they are inconvenient for online maintenance, and many top-mounted ball valves that are convenient for online maintenance are often sealed. Although it can also play the role of cut-off and adjustment, it is not efficient.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a top-loading high-efficiency ball valve that can be repaired online. By using the elasticity of the spring in the fastening device, the ball in the ball valve is reinforced from two directions, which is not only convenient for online repair, installation and disassembly. The ball valve further improves the working effect of the whole valve during use, not only has good sealing performance, but also is convenient to adjust; the whole device has a simple structure, is convenient to use, and has strong practicability.

In order to solve the above technical problems, the technical solution adopted in the present invention is: a top-loading high-efficiency ball valve that can be repaired online, including a valve body, a sphere, a valve stem, and a valve seat. A connecting flange, the top of the valve body is provided with a second connecting flange, the second connecting flange is connected with the valve seat through the first fixing bolt, the inside of the valve body is provided with a ball and a fastening device, and the top of the ball is connected to the valve stem. One end is connected, the other end of the valve stem passes through the valve seat and extends to the top of the valve seat, and the sphere is provided with a through hole;

The fastening device includes a fixed support ring, a first limit ring, a second limit ring and a closed ring. The fixed support ring and the closed ring are provided with a plurality of symmetrical fixed blocks, and the two symmetrical fixed blocks pass through Spring connection, the first limit ring and the second limit ring are fixedly connected with the fixed support ring and the sealing ring through the fixing nut and the fixing screw sleeve respectively, the first limiting ring is provided with a sliding ring, and the inner wall of the sealing ring is provided with The sliding groove, the sliding ring is placed in the sliding groove.

In a preferred solution, the valve stem is sleeved with a first sealing ring and a limit plate, and the limit plate is fixedly connected to the valve seat through a second fixing bolt.

In a preferred solution, the top of the valve seat is fixedly connected to the fixing plate through a third fixing bolt, the fixing plate is connected to the connecting plate through a supporting plate, and the connecting plate is provided with a plurality of fixing holes.

In a preferred solution, a second sealing ring is provided at the connection between the second connecting flange and the valve seat.

In a preferred solution, the sealing ring is provided with a plurality of limiting grooves, and the limiting groove is provided with a third sealing ring.

In a preferred solution, the fixing support ring is provided with a fourth sealing ring and an arc surface, and the fourth sealing ring and the arc surface are in complete contact with the sphere.

In a preferred solution, the minimum inner diameters of the fixed support ring, the sliding ring and the sealing ring are the same.

In a preferred solution, the diameter of the through hole is not greater than the minimum inner diameter of the fixing bracket.

In a preferred solution, there are two fastening devices, and the two fastening devices are respectively arranged in the valve body between the ball and the first connecting flange.

The on-line repairable top-loading high-efficiency ball valve provided by the present invention has the following beneficial effects by adopting the above structure:

(1) By using the elasticity of the spring in the fastening device, the ball in the ball valve is reinforced from two directions, which improves the working effect of the entire valve during use and has good sealing performance;

(2) By utilizing the elasticity of the spring in the fastening device, the disassembly and installation of the ball valve during the online maintenance process is facilitated, and the convenience is improved.

(3) The whole device has a simple structure, is convenient to use and has strong practicability.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

FIG. 1 is a cross-sectional view of the overall structure of the present invention.

FIG. 2 is a schematic diagram of the overall structure of the present invention.

FIG. 3 is an exploded view of the structure of the sphere, the valve stem and the valve seat of the present invention.

FIG. 4 is a schematic structural diagram of the inside of the valve body and the fastening device of the present invention.

Fig. 5 is an exploded view of the structure of the fastening device of the present invention.

6 is a cross-sectional view of the structure of the fastening device of the present invention.

In the figure: valve body 1, sphere 2, valve stem 3, first connecting flange 4, second connecting flange 5, through hole 6, first sealing ring 7, valve seat 8, first fixing bolt 9, limit Plate 10, second fixing bolt 11, fixing plate 12, third fixing bolt 13, support plate 14, connecting plate 15, fixing hole 16, second sealing ring 17, fastening device 18, fixing bracket 19, fixing nut 20 , fixed screw sleeve 21, first limit ring 22, sliding ring 23, fixed block 24, spring 25, second limit ring 26, sealing ring 27, limit groove 28, third sealing ring 29, fourth sealing ring 30, arc surface 31, sliding groove 32.

Detailed ways

As shown in Figures 1-6, a top-loading high-efficiency ball valve that can be repaired online includes a valve body 1, a ball body 2, a valve stem 3, and a valve seat 8. The left and right sides of the valve body 1 are provided with a first connection method flange 4, the top of the valve body 1 is provided with a second connecting flange 5, the second connecting flange 5 is connected with the valve seat 8 through the first fixing bolt 9, the valve body 1 is provided with a ball 2 and a fastening device 18, the ball is The top of 2 is connected with one end of the valve stem 3, the other end of the valve stem 3 passes through the valve seat 8 and extends to the top of the valve seat 8, and the ball 2 is provided with a through hole 6;

The fastening device 18 includes a fixed support ring 19, a first limit ring 22, a second limit ring 26 and a sealing ring 27. The fixing support ring 19 and the sealing ring 27 are provided with a plurality of symmetrical fixing blocks 24. The two symmetrical fixing blocks 24 are connected by a spring 25, the first limiting ring 22 and the second limiting ring 26 are fixedly connected with the fixing support ring 19 and the sealing ring 27 through the fixing nut 20 and the fixing screw sleeve 21 respectively. The limiting ring 22 is provided with a sliding ring 23 , the inner wall of the sealing ring 27 is provided with a sliding groove 32 , and the sliding ring 23 is placed in the sliding groove 32 .

In a preferred solution, the valve stem 3 is sleeved with a first sealing ring 7 and a limiting plate 10 , and the limiting plate 10 is fixedly connected to the valve seat 8 through a second fixing bolt 11 . The sealing performance between the valve stem 3 and the valve seat 8 is improved.

In a preferred solution, the top of the valve seat 8 is fixedly connected to the fixing plate 12 through the third fixing bolt 13 , the fixing plate 12 is connected to the connecting plate 15 through the supporting plate 14 , and the connecting plate 15 is provided with a plurality of fixing holes 16 . It is easy to connect to the control device, and has a wide range of options, which improves the practicability.

In a preferred solution, a second sealing ring 17 is provided at the connection between the second connecting flange 5 and the valve seat 8 . Improved sealing.

In a preferred solution, the sealing ring 27 is provided with a plurality of limiting grooves 28 , and the limiting grooves 28 are provided with a third sealing ring 29 . Improved sealing.

In a preferred solution, the fixing support ring 19 is provided with a fourth sealing ring 30 and an arc surface 31 , and the fourth sealing ring 30 and the arc surface 31 are in complete contact with the sphere 2 . Improve the working effect of the whole ball valve.

In a preferred solution, the minimum inner diameters of the fixed support ring 19 , the sliding ring 23 and the sealing ring 27 are the same. Improved sealing.

In a preferred solution, the diameter of the through hole 6 is not larger than the minimum inner diameter of the fixing bracket 19 . Improve the working effect of the ball valve.

In a preferred solution, there are two fastening devices 18 , and the two fastening devices 18 are respectively arranged in the valve body 1 between the ball body 2 and the first connecting flange 4 . It improves the sealing performance and facilitates disassembly and installation for online maintenance.

The use method of the present invention is as follows: when the ball valve is normally installed and used, when maintenance is required, the entire ball valve does not need to be disassembled, but only the pipeline circulation is closed, and then the first fastening bolt 9 is loosened, and the valve seat 8, the valve stem 3 and the valve seat 8 are disassembled in turn. Sphere 2, when dismantling the sphere 2, through the elasticity of the spring 25, the fastening device 18 is squeezed to create a space to facilitate the removal of the sphere 2, and then the fastening device 18 is taken out, and then each component is repaired;

When installing, first put the two fastening devices 18 into the valve body 1, then put the ball 2 between the two fastening devices 18, and use the elastic force of the spring to release the fastening device 18 after the ball 2 is put in. Two fastening devices 18 fasten the ball 2, and the valve seat 8 is installed on the top of the valve body 1, and the maintenance can be completed after being fixed by the first fastening bolt 9.

The beneficial effects of the present invention: by utilizing the elasticity of the spring in the fastening device, the ball in the ball valve is reinforced from two directions, which not only facilitates online maintenance, installation and disassembly of the ball valve, but also improves the working effect of the entire valve during use. Not only the sealing performance is good, but also the adjustment is convenient; the whole device has a simple structure, is convenient to use, and has strong practicability.

Claims (9)

1. The utility model provides a but high-efficient ball valve of facial make-up of online maintenance, includes valve body (1), spheroid (2), valve rod (3), disk seat (8), its characterized in that: the valve comprises a valve body (1), wherein first connecting flanges (4) are arranged on the left side and the right side of the valve body (1), a second connecting flange (5) is arranged at the top of the valve body (1), the second connecting flange (5) is connected with a valve seat (8) through a first fixing bolt (9), a ball body (2) and a fastening device (18) are arranged inside the valve body (1), the top of the ball body (2) is connected with one end of a valve rod (3), the other end of the valve rod (3) penetrates through the valve seat (8) and extends to the top of the valve seat (8), and a through hole (6) is formed in the ball body (2);

fastener (18) including fixed ring (19), first spacing ring (22), second spacing ring (26) and closed ring (27), be equipped with fixed block (24) of a plurality of symmetries on fixed ring (19) and closed ring (27), two symmetrical fixed blocks (24) are connected through spring (25), first spacing ring (22) and second spacing ring (26) are respectively through fixation nut (20) and fixed swivel nut (21) and fixed ring (19) and closed ring (27) fixed connection, be equipped with slip ring (23) on first spacing ring (22), be equipped with sliding tray (32) on the inner wall of closed ring (27), place in sliding tray (32) slip ring (23).

2. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: the valve rod (3) on the cover be equipped with first sealing ring (7) and limiting plate (10), limiting plate (10) are through second fixing bolt (11) and disk seat (8) fixed connection.

3. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: the top of valve seat (8) pass through third fixing bolt (13) and fixed plate (12) fixed connection, fixed plate (12) pass through backup pad (14) and are connected with company's board (15), be equipped with a plurality of fixed orificess (16) on company's board (15).

4. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: and a second sealing ring (17) is arranged at the joint of the second connecting flange (5) and the valve seat (8).

5. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: the sealing ring (27) is provided with a plurality of limiting grooves (28), and third sealing rings (29) are arranged in the limiting grooves (28).

6. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: the fixed supporting ring (19) is provided with a fourth sealing ring (30) and an arc surface (31), and the fourth sealing ring (30) and the arc surface (31) are in complete contact with the ball body (2).

7. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: the minimum inner diameters of the fixed supporting ring (19), the sliding ring (23) and the sealing ring (27) are the same.

8. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: the diameter of the through hole (6) is not more than the minimum inner diameter of the fixed supporting ring (19).

9. The on-line maintainable top-mounted high-efficiency ball valve of claim 1, wherein: the two fastening devices (18) are arranged in the valve body (1) between the ball body (2) and the first connecting flange (4) respectively.

Images