CN216382656U

CN216382656U - Split type high-performance fluorine-lined ball valve

Info

Publication number: CN216382656U
Application number: CN202122854084.3U
Authority: CN
Inventors: 李永安; 杨伟良; 何武财
Original assignee: Zhejiang Zixin Automation Equipment Co ltd
Current assignee: Zhejiang Zixin Automation Equipment Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-26
Anticipated expiration: 2031-11-19

Abstract

The application relates to a split high-performance fluorine-lined ball valve, which comprises a valve body, a bushing, a valve seat, a valve installing ball, a valve shaft and a pneumatic actuator connected with the valve seat through a support, wherein an output shaft of the pneumatic actuator is connected with the valve shaft, a pressing sleeve is arranged on the inner surface of the support, a packing gland is arranged at a port of the valve body, and a belleville spring is arranged between the packing gland and the pressing sleeve; a packing seal assembly is arranged between the valve body and the valve shaft and comprises an outer sealing ring, an inner first sealing ring, an inner second sealing ring and an inner third sealing ring; the inner second sealing rings are arranged in a V shape, the inner second sealing rings are sequentially stacked along the axis direction of the valve shaft, and clearance parts are arranged among the inner first sealing rings, the inner second sealing rings and the inner third sealing rings; the inner third sealing ring is abutted against the pressing sleeve, and the inner first sealing ring is arranged on the valve body. This application has long service life, sealed effectual, wear-resisting corrosion-resistant effect.

Description

Split type high-performance fluorine-lined ball valve

Technical Field

The application relates to the technical field of valves, in particular to a split type high-performance fluorine-lined ball valve.

Background

The ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, paper making, pharmacy, water conservancy, electric power, municipal administration, steel and the like, plays a very important role in national economy, has the action of rotating by ninety degrees, has a circular through hole or a channel passing through the axis, is mainly used for cutting off, distributing and changing the flowing direction of a medium in a pipeline, can be closed tightly only by rotating by ninety degrees and a small rotating torque, and is most suitable for being used as a switch and a cut-off valve.

The existing ball valve is easy to deform and wear due to rotation of a valve shaft in the using process, and after the sealing filler is worn, the sealing filler cannot be automatically compensated, so that the sealing performance is reduced, the service life of the ball valve is short, the wear of a wear surface of the ball valve is serious, and the service life of the valve is short.

Disclosure of Invention

The application provides a to split high performance lining fluorine ball valve, has long service life, sealed effectual effect.

The application provides a bisection type high performance fluorine lining ball valve adopts following technical scheme:

a split type high-performance fluorine-lined ball valve comprises a valve body, a bushing arranged on the inner surface of the valve body, a valve seat arranged in the valve body, a valve ball arranged in the valve seat, a valve shaft connected with the valve ball and a pneumatic actuator connected with the valve seat through a support, wherein an output shaft of the pneumatic actuator is connected with the valve shaft, a pressing sleeve is arranged on the inner surface of the support, a packing gland is arranged at a port of the valve body, and a butterfly spring is arranged between the packing gland and the pressing sleeve; a packing seal assembly is arranged between the valve body and the valve shaft, and comprises an outer sealing ring, and an inner first sealing ring, an inner second sealing ring and an inner third sealing ring which are sequentially stacked and arranged along the axial direction of the valve shaft; the inner second sealing rings are arranged in a V shape, the inner second sealing rings are sequentially stacked along the axis direction of the valve shaft, and clearance parts are arranged among the inner first sealing rings, the inner second sealing rings and the inner third sealing rings; the inner third sealing ring is abutted to the pressing sleeve, and the inner first sealing ring is arranged on the valve body.

Preferably, the inner included angle of the inner second sealing ring is 90 degrees, and the outer included angle thereof is 100 degrees.

Preferably, one end of the inner first sealing ring is provided with an arch part, an outer included angle of the arch part is 100 degrees, one end of the inner third sealing ring is provided with a groove part, and an inner included angle of the groove part is 90 degrees.

Preferably, the inner first sealing ring, the inner second sealing ring and the inner third sealing ring are all polytetrafluoroethylene sealing rings.

Preferably, an outer ring sleeve is arranged between the outer sealing ring and the valve body.

Preferably, the outer sealing ring is provided with a step portion on an outer circumferential surface facing the valve body, and the outer ring sleeve is mounted on the step portion.

Preferably, the inner surface of the valve body is provided with a plurality of caulking grooves, the surface of the bushing is provided with protruding parts which correspond to the caulking grooves one to one, and the protruding parts are embedded in the caulking grooves.

Preferably, a spring washer is arranged between the packing gland and the valve body, the packing gland is connected with the support through a bolt and a nut, and the spring washer is sleeved outside the bolt.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the packing seal assembly is arranged in the valve body, the belleville spring is arranged between the pressing sleeve and the packing gland, and clearance parts are formed among the inner first seal ring, the inner second seal ring and the inner third seal ring, so that the packing seal assembly generates corresponding deformation and is matched with the belleville spring, the automatic compensation effect of the packing seal ring is realized, and after the packing seal assembly is worn, the pressing sleeve always presses the inner third seal ring under the pressure effect of the belleville spring, so that the sealing performance among the inner first seal ring, the inner second seal ring, the inner third seal ring and the outer seal ring is ensured, and the valve has the effects of long service life and good sealing effect;

2. the outer ring sleeve is arranged on the step part, so that the matching stability between the outer ring sleeve and the packing sealing assembly is improved, and the sealing effect of the valve body is improved when the valve body is used;

3. a plurality of caulking grooves are formed in the inner surface of the valve body, protruding portions in one-to-one correspondence with the caulking grooves are arranged on the surface of the lining, the protruding portions are embedded in the caulking grooves, and the assembling stability between the valve body and the lining is improved.

Drawings

FIG. 1 is a cross-sectional view of a split high performance fluorine-lined ball valve;

FIG. 2 is a schematic structural diagram of a valve body in a split high-performance fluorine-lined ball valve;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a partial cross-sectional schematic view of a stuffing seal assembly.

Description of reference numerals: 1. a valve body; 101. caulking grooves; 2. a bushing; 21. a boss portion; 3. a valve seat; 4. a valve ball; 5. a valve shaft; 6. a pneumatic actuator; 7. a packing gland; 8. a spring pad; 9. a bolt and a nut; 10. pressing the sleeve; 11. a belleville spring; 12. a packing seal assembly; 121. an outer seal ring; 1211. a step portion; 122. an inner first seal ring; 1221. an arching portion; 123. an inner second seal ring; 1231. an inner included angle; 1232. an outer included angle; 124. an inner third seal ring; 1241. a groove part; 125. a gap portion; 13. an outer ring sleeve; 14. and (4) a bracket.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses butt-split high-performance fluorine-lined ball valve.

Referring to fig. 1 and 2, the split high-performance fluorine-lined ball valve includes a valve body 1, a bushing 2 disposed on an inner surface of the valve body 1, a valve seat 3 installed in the valve body 1, a valve ball 4 installed in the valve seat 3, a valve shaft 5 connected to the valve ball 4, and a pneumatic actuator 6 connected to the valve seat 3 through a holder 14, wherein an output shaft of the pneumatic actuator 6 is connected to the valve shaft 5.

Referring to fig. 1 and 2, a packing gland 7 is arranged at a port of a valve body 1, a spring washer 8 is arranged between the packing gland 7 and the valve body 1, the packing gland 7 is connected with a support 14 through a bolt and a nut 9, and the spring washer 8 is sleeved outside the bolt; the fixed connection between the valve body 1 and the bracket 14 is realized.

Referring to fig. 2 and 3, a pressing sleeve 10 is arranged on the inner surface of the bracket 14, and a belleville spring 11 is arranged between the packing gland 7 and the pressing sleeve 10; install packing seal assembly 12 between valve body 1 and valve shaft 5, packing seal assembly 12 includes outer seal ring 121 and piles up interior first sealing ring 122, interior second sealing ring 123 and interior third sealing ring 124 that arranges in proper order along the axis direction of valve shaft 5, interior third sealing ring 124 with press cover 10 to contradict, interior first sealing ring 122 is installed on valve body 1, and just interior first sealing ring 122, interior second sealing ring 123, interior third sealing ring 124 are the polytetrafluoroethylene sealing ring.

Referring to fig. 3 and 4, the inner second seal ring 123 is disposed in a V shape, and a plurality of the inner second seal rings 123 are sequentially stacked in an axial direction of the valve shaft 5; the inner included angle 1231 of the inner second seal ring 123 is 90 °, and the outer included angle 1232 thereof is 100 °; one end of the inner first sealing ring 122 is provided with an arched portion 1221, and an outer included angle 1232 of the arched portion 1221 is 100 degrees; one end of the inner third seal ring 124 is provided with a groove portion 1241, and an inner angle 1231 of the groove portion 1241 is 90 °.

Referring to fig. 3 and 4, the raised portion 1221 of the inner first seal ring 122 is installed in the inner corner 1231 of the inner second seal ring 123, the outer corner 1232 of the inner second seal ring 123 is installed in the groove portion 1241 of the inner third seal ring 124, and the outer corner 1232 of the adjacent inner second seal ring 123 is installed in the inner corner 1231 of the adjacent inner second seal ring 123, so that the gap portions 125 are formed among the inner first seal ring 122, the inner second seal ring 123, and the inner third seal ring 124.

Referring to fig. 2 and 3, an outer ring sleeve 13 is disposed between the outer seal ring 121 and the valve body 1, a step 1211 is disposed on an outer circumferential surface of the outer seal ring 121 facing the valve body 1, and the outer ring sleeve 13 is mounted on the step 1211.

Referring to fig. 2 and 3, wear-resistant layers are arranged on the surface of the inner cavity of the valve body 1, the valve seat 3, the valve ball 4 and the valve shaft 5 in a spaced manner, the wear-resistant layers are ultra-high molecular weight polyethylene wear-resistant and corrosion-resistant layers, the thickness of each wear-resistant layer is 0.8-1.2mm, and the overall wear-resistant and corrosion-resistant performance of the ball valve is improved.

Referring to fig. 2 and 3, a plurality of caulking grooves 101 are formed in the inner surface of the valve body 1, and protrusions 21 corresponding to the caulking grooves 101 one by one are formed on the surface of the liner 2, and the protrusions 21 are fitted into the caulking grooves 101, thereby improving the stability of the assembly between the valve body 1 and the liner 2.

The implementation principle is as follows: by arranging the packing seal assembly 12 in the valve body 1, arranging the belleville spring 11 between the pressing sleeve 10 and the packing gland 7, and forming the gap parts 125 among the inner first seal ring 122, the inner second seal ring 123 and the inner third seal ring 124, the packing seal assembly 12 is enabled to generate corresponding deformation and is matched with the belleville spring 11, the automatic compensation function of the packing seal ring is realized, and after the packing seal assembly 12 is worn, the pressing sleeve 10 always presses the inner third seal ring 124 under the pressure action of the belleville spring 11, so that the sealing performance among the inner first seal ring 122, the inner second seal ring 123, the inner third seal ring 124 and the outer seal ring 121 is ensured; has the advantages of long service life, good sealing effect, wear resistance and corrosion resistance.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a split type high performance fluorine lining ball valve, includes valve body (1), sets up in bush (2) of valve body (1) internal surface, installs disk seat (3) in valve body (1), installs valve ball (4) in disk seat (3), valve shaft (5) be connected with valve ball (4) and pneumatic actuator (6) be connected with disk seat (3) through support (14), the output shaft of pneumatic actuator (6) with valve shaft (5) are connected, its characterized in that: a pressing sleeve (10) is arranged on the inner surface of the support (14), a packing gland (7) is arranged at the port of the valve body (1), and a belleville spring (11) is arranged between the packing gland (7) and the pressing sleeve (10); a packing seal assembly (12) is arranged between the valve body (1) and the valve shaft (5), and the packing seal assembly (12) comprises an outer seal ring (121), and an inner first seal ring (122), an inner second seal ring (123) and an inner third seal ring (124) which are sequentially stacked and arranged along the axial direction of the valve shaft (5); the inner second sealing rings (123) are arranged in a V shape, the inner second sealing rings (123) are sequentially stacked along the axial direction of the valve shaft (5), and gap parts (125) are arranged among the inner first sealing ring (122), the inner second sealing ring (123) and the inner third sealing ring (124); the inner third sealing ring (124) is abutted against the pressing sleeve (10), and the inner first sealing ring (122) is installed on the valve body (1).

2. The split high performance fluorine lined ball valve of claim 1, wherein: the inner included angle (1231) of the inner second sealing ring (123) is 90 degrees, and the outer included angle (1232) thereof is 100 degrees.

3. The split high performance fluorine lined ball valve of claim 1 or 2, wherein: one end of the inner first sealing ring (122) is provided with an arch part (1221), an outer included angle (1232) of the arch part (1221) is 100 degrees, one end of the inner third sealing ring (124) is provided with a groove part (1241), and an inner included angle (1231) of the groove part (1241) is 90 degrees.

4. The split high performance fluorine lined ball valve of claim 1, wherein: the inner first sealing ring (122), the inner second sealing ring (123) and the inner third sealing ring (124) are all polytetrafluoroethylene sealing rings.

5. The split high performance fluorine lined ball valve of claim 1, wherein: an outer ring sleeve (13) is arranged between the outer sealing ring (121) and the valve body (1).

6. The split high performance fluorine lined ball valve of claim 5, wherein: the outer sealing ring (121) is provided with a step part (1211) on the outer circumferential surface facing the valve body (1), and the outer ring sleeve (13) is installed on the step part (1211).

7. The split high performance fluorine lined ball valve of claim 1, wherein: the inner surface of the valve body (1) is provided with a plurality of caulking grooves (101), the surface of the lining (2) is provided with protruding parts (21) which correspond to the caulking grooves (101) one by one, and the protruding parts (21) are embedded in the caulking grooves (101).

8. The split high performance fluorine lined ball valve of claim 1, wherein: a spring cushion (8) is arranged between the packing gland (7) and the valve body (1), the packing gland (7) is connected with a support (14) through a bolt and a nut (9), and the spring cushion (8) is sleeved outside the bolt.