CN220551531U - Ball valve capable of presetting valve seat - Google Patents
Ball valve capable of presetting valve seat Download PDFInfo
- Publication number
- CN220551531U CN220551531U CN202322217227.9U CN202322217227U CN220551531U CN 220551531 U CN220551531 U CN 220551531U CN 202322217227 U CN202322217227 U CN 202322217227U CN 220551531 U CN220551531 U CN 220551531U
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- Prior art keywords
- seat
- adjusting
- mounting part
- valve
- seat body
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- 238000007789 sealing Methods 0.000 claims abstract description 41
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
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- Taps Or Cocks (AREA)
Abstract
The utility model discloses a ball valve with a preset valve seat, relates to the field of ball valves, and solves the problems of excessively complex structural design and the like. The seat body is provided with an adjusting seat, and the adjusting seat is provided with a sealing element; the central section of the adjusting seat is similar to a C shape, and comprises an oblique mounting part, a connecting part and a limiting part, wherein the connecting part is integrally connected between the oblique mounting part and the limiting part, the oblique mounting part is arranged obliquely to the axial direction of the seat body, the connecting part is arranged perpendicular to the axial direction of the seat body, and the limiting part is arranged parallel to the axial direction of the seat body; an open cavity is formed in the oblique mounting part, and a sealing element is arranged in the open cavity; the limiting part is provided with an adjusting screw which is also in threaded connection with the inside of the base. The inclined assembly part is moved to push to the direction of the ball body by rotating the adjusting screw, the contact degree of the sealing piece and the ball body can be preset, and an appropriate valve seat pretightening force is selected, so that the structure design is simpler, the parts are fewer, the cost is reduced, the assembly difficulty is low, and the requirements of common processing enterprises are met.
Description
Technical Field
The utility model relates to the field of ball valves, in particular to a ball valve with a preset valve seat.
Background
The Chinese patent of the prior art discloses a CN104089044A, a LNG ultralow temperature top-mounted ball valve seat capable of finely adjusting pretightening force and being dismounted on line, and a valve seat sealing ring is embedded in the front end twisted edge of a valve seat support; the periphery of the valve seat support is provided with a valve seat compression ring which is in threaded fit with the valve seat support, a pre-tightening compression spring is arranged between the tail part of the valve seat compression ring and the valve body, and the valve seat support can be moved in the axial direction by rotating the valve seat compression ring. The valve seat support moves linearly along the axial direction by rotating the valve seat compression ring, so that the valve seat sealing ring is close to or far away from the ball body to meet different sealing requirements. However, the design has certain complexity, various parts and difficult assembly, and common enterprises cannot meet the processing requirements, so that the cost is too high, and the production is not facilitated.
Disclosure of Invention
The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides a ball valve capable of presetting a valve seat, and solves the problems of excessively complex structural design and the like.
The technical scheme of the utility model is as follows: the valve seat assembly comprises a seat body, an adjusting seat is arranged on the seat body, and a sealing piece in sealing fit with the ball body is arranged on the adjusting seat; the central section of the adjusting seat is similar to a C shape, and comprises an oblique mounting part, a connecting part and a limiting part, wherein the connecting part is integrally connected between the oblique mounting part and the limiting part, the oblique mounting part is arranged obliquely to the axial direction of the seat body, the connecting part is arranged perpendicular to the axial direction of the seat body, and the limiting part is arranged parallel to the axial direction of the seat body; an open cavity is formed in the oblique mounting part, and a sealing element is arranged in the open cavity; and the limiting part is provided with an adjusting screw which is also threaded in the seat body to adjust the distance between the seat body and the limiting part.
By adopting the technical scheme, the contact degree of the sealing element and the ball body can be preset by rotating the adjusting screw to move the oblique mounting part to push the ball body, and a proper valve seat pretightening force is selected to ensure sealing and control the torque within a reasonable range, so that the abrasion condition of the main sealing surface in the opening and closing process of the valve can be estimated, and the abrasion acceleration caused by overlarge torque is reduced; compared with the background technology or the prior art at the present stage, the structure design is simpler, the parts are fewer, the cost is reduced, the assembly difficulty is low, and the requirements of common processing enterprises are met.
In one possible design, the seat body is provided with a V-shaped groove, the inclined device part is arranged in the V-shaped groove, and a V-shaped elastic gasket is arranged between the inclined device part and the V-shaped groove.
By adopting the design, the adjusting seat has a certain range of elastic adjusting travel, and the V-shaped elastic gasket can also prevent the medium from leaking into the valve seat assembly.
In one possible design, a flat washer is mounted between the stop portion and the seat.
By adopting the design, the adjusting seat has a proper elastic floating range, and abnormal rotation of the adjusting screw under the action of medium force can be avoided.
In one possible design, the adjusting seat is composed of four fan ring bodies, gaps are arranged between the fan ring bodies, and each fan ring body corresponds to one adjusting screw.
By adopting the design, the movable range of the adjusting seat is enlarged, which is equivalent to enlarging the adjusting range of the adjusting seat, and the application range is larger.
In one possible design, an outer bolt is also threadedly mounted on the valve body from outside to inside, and the end of the outer bolt is inserted into the adjusting screw to be in interlocking engagement with the adjusting screw.
By adopting the design, the adjusting screw can be rotated through the outer bolt so as to adjust the compression degree of the sealing element and the ball body, support on-line maintenance and have more convenient operation.
In one possible design, a soft sealing ring is also arranged on the base body, and the soft sealing ring and the sphere form sealing fit.
By adopting the design, soft and hard double seals are formed, and the sealing performance is better.
Drawings
FIG. 1 is an overall cross-sectional view of an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;
FIG. 3 is an enlarged view of a portion of the present utility model after tightening an adjustment screw;
FIG. 4 is a schematic view of the structure of the adjusting seat of the present utility model;
FIG. 5 is a perspective cross-sectional view of the adjustment seat of the present utility model;
1, a valve seat assembly; 2. a sphere; 3. a valve body; 11. a base; 12. an adjusting seat; 13. a seal; 121. an oblique mounting part; 122. a connection part; 123. a limit part; 124. an open cavity; 14. an adjusting screw; 15. v-shaped elastic washers; 16. a flat gasket; 120. a fan ring body; 125. a gap; 31. an outer bolt; 17. and (5) a soft sealing ring.
Description of the embodiments
1-5, a ball valve with a preset valve seat comprises a valve seat assembly 1, a ball body 2 and a valve body 3, wherein the valve seat assembly 1 comprises a seat body 11, an adjusting seat 12 is arranged on the seat body 11, and a sealing element 13 in sealing fit with the ball body 2 is arranged on the adjusting seat 12; the central section of the adjusting seat 12 is similar to a C shape, and comprises an oblique mounting part 121, a connecting part 122 and a limiting part 123, wherein the connecting part 122 is integrally connected between the oblique mounting part 121 and the limiting part 123, the oblique mounting part 121 is arranged obliquely to the axial direction of the seat body 11, the connecting part 122 is arranged perpendicular to the axial direction of the seat body 11, and the limiting part 123 is arranged parallel to the axial direction of the seat body 11; an opening cavity 124 is formed in the oblique mounting part 121, the sealing element 13 is mounted in the opening cavity 124, one side of the sealing element 13 is exposed out of the opening position of the opening cavity 124, the central section of the sealing element 13 can be triangular, and the opening cavity 124 is adapted to the shape of the sealing element 13; the limiting part 123 is provided with an adjusting screw 14, and the adjusting screw 14 is further in threaded connection with the inside of the base 11 to adjust the distance between the base 11 and the limiting part 123. When the pretightening force is required to be regulated and enhanced, the regulating screw 14 is screwed, the distance between the seat body 11 and the limiting part 123 is finely regulated and reduced, the connecting part 122 and the oblique mounting part 121 are close to the ball body 2 along the axial vertical direction of the seat body 11, and the sealing piece 13 can be tightly pressed to the ball body 2 so as to promote the pretightening force of the sealing surface; conversely, the adjustment screw 14 is rotated in the opposite direction by reducing the preload force. The adjusting seat 12 is made of metal with certain elastic deformation capability, and the stress of the adjusting seat 12 can finely adjust and enlarge or reduce the diameter in spite of fine adjustment and still influence the pretightening force in terms of the integral movement mode of the adjusting seat 12. The pushing of the oblique fitting portion 121 actually changes the contact position with the spherical surface of the ball 2, and reduces the leakage phenomenon caused by the original abrasion of the sealing surface. The adjusting screw 14 and the limiting portion 123 are located between the seat 11 and the valve body 3, and the adjusting screw 14 can be adjusted if the adjusting screw 14 is provided on the connecting portion 122, but the adjusting screw 14 is more likely to be provided on the limiting portion 123 in the small-and medium-diameter ball valve because the space near the connecting portion 122 is narrow and is easily interfered with the ball 2.
The seat body 11 is provided with a V-shaped groove, the inclined mounting part 121 is arranged in the V-shaped groove, a V-shaped elastic gasket 15 is arranged between the inclined mounting part 121 and the V-shaped groove, and a flat gasket 16 is arranged between the limiting part 123 and the seat body 11. When the pretightening force is adjusted, the side wall of one side of the V-shaped elastic washer 15 is compressed by the pressure, and the same is true of the flat washer 16. Thus, the adjustment seat 12 has a suitable elastic floating range.
Since moving the adjustment seat 12 means that it is necessary to expand or contract its diameter, the elastic deformability of the adjustment seat 12 made of metal is generally not great, and therefore, the adjustment seat 12 is provided in a plurality of separate parts, i.e. the adjustment seat 12 is composed of four fan-shaped bodies 120, with gaps 125 between the fan-shaped bodies 120, corresponding to a set of four open rings, one adjustment screw 14 for each fan-shaped body 120. The gap 125 may be enlarged or reduced as the set screw 14 is rotated. Since the gap 125 is typically very small, it is negligible to the customer in terms of the sealing performance of the hard seal 13.
An outer bolt 31 is also mounted on the valve body 3 in a threaded manner from outside to inside, and the end of the outer bolt 31 is inserted into the adjusting screw 14 to be in interlocking fit with the adjusting screw 14. The adjusting screw 14 can be rotated through the outer bolt 31 to adjust the compression degree of the sealing element 13 and the ball body 2, support on-line maintenance and facilitate operation. In order to avoid leakage from the threaded surface between the outer bolt 31 and the valve body 3, sealing measures are required.
The seat body 11 is also provided with a soft sealing ring 17, and the soft sealing ring 17 and the sphere 2 form sealing fit. The soft sealing ring 17 is located closer to the central axis of the valve body 3 than the sealing member 13 so as to avoid affecting the normal operation of the adjusting seat 12.
Claims (6)
1. The utility model provides a but ball valve of preset disk seat, is including disk seat subassembly (1), spheroid (2) and valve body (3), its characterized in that: the valve seat assembly (1) comprises a seat body (11), an adjusting seat (12) is arranged on the seat body (11), and a sealing piece (13) in sealing fit with the ball body (2) is arranged on the adjusting seat (12); the central section of the adjusting seat (12) is similar to a C shape, and comprises an oblique mounting part (121), a connecting part (122) and a limiting part (123), wherein the connecting part (122) is integrally connected between the oblique mounting part (121) and the limiting part (123), the oblique mounting part (121) is arranged obliquely to the axial direction of the seat body (11), the connecting part (122) is arranged perpendicular to the axial direction of the seat body (11), and the limiting part (123) is arranged parallel to the axial direction of the seat body (11); an open cavity (124) is formed in the inclined mounting part (121), and the sealing piece (13) is arranged in the open cavity (124); an adjusting screw (14) is arranged on the limiting part (123), and the adjusting screw (14) is further connected to the base body (11) in a threaded mode to adjust the distance between the base body (11) and the limiting part (123).
2. A pre-seating ball valve as defined in claim 1, wherein: the seat body (11) is provided with a V-shaped groove, the inclined mounting part (121) is arranged in the V-shaped groove, and a V-shaped elastic gasket (15) is arranged between the inclined mounting part (121) and the V-shaped groove.
3. A pre-seating ball valve as defined in claim 1 or 2, wherein: a flat gasket (16) is arranged between the limiting part (123) and the seat body (11).
4. A pre-seating ball valve as defined in claim 1 or 2, wherein: the adjusting seat (12) is composed of four fan ring bodies (120), gaps (125) are formed between the fan ring bodies (120), and each fan ring body (120) corresponds to one adjusting screw (14).
5. A pre-seating ball valve as defined in claim 1 or 2, wherein: an outer bolt (31) is arranged on the valve body (3) in a threaded manner from outside to inside, and the end part of the outer bolt (31) is inserted into the adjusting screw (14) to be in linkage fit with the adjusting screw (14).
6. A pre-seating ball valve as defined in claim 1 or 2, wherein: the seat body (11) is also provided with a soft sealing ring (17), and the soft sealing ring (17) and the sphere (2) form sealing fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322217227.9U CN220551531U (en) | 2023-08-16 | 2023-08-16 | Ball valve capable of presetting valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322217227.9U CN220551531U (en) | 2023-08-16 | 2023-08-16 | Ball valve capable of presetting valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551531U true CN220551531U (en) | 2024-03-01 |
Family
ID=90003339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322217227.9U Active CN220551531U (en) | 2023-08-16 | 2023-08-16 | Ball valve capable of presetting valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551531U (en) |
-
2023
- 2023-08-16 CN CN202322217227.9U patent/CN220551531U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |