CN220016126U - Hard seal butterfly valve - Google Patents
Hard seal butterfly valve Download PDFInfo
- Publication number
- CN220016126U CN220016126U CN202321716152.2U CN202321716152U CN220016126U CN 220016126 U CN220016126 U CN 220016126U CN 202321716152 U CN202321716152 U CN 202321716152U CN 220016126 U CN220016126 U CN 220016126U
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- China
- Prior art keywords
- valve body
- valve seat
- floating
- valve
- butterfly valve
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- 238000007789 sealing Methods 0.000 claims abstract description 35
- 230000006835 compression Effects 0.000 claims abstract description 31
- 238000007906 compression Methods 0.000 claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a hard sealing butterfly valve, relates to the field of butterfly valves, and solves the problem that the position of a floating valve seat cannot be adjusted after the butterfly valve is arranged in a pipeline. The valve body is provided with an adjusting mechanism, the adjusting mechanism comprises a plurality of inserting posts, and the end parts on the inserting posts are provided with inclined inserting surfaces which are inclined to the radial direction of the compression ring; the valve body is provided with a jack for inserting the inserting column along the radial direction of the pressing ring, the outer wall of the pressing ring is provided with an inclined slot which is matched with the shape of the inclined inserting surface, and the inserting column is inserted into the jack and can be further inserted into the inclined slot to drive the pressing ring to extrude towards the floating valve seat through inclined staggered matching. The compression ring is extruded towards the floating valve seat due to the matching of the inclined slot and the inclined plane of the inclined insertion surface in a manner of being deeply inserted into the insertion column, so that the floating valve seat is in contact with the sealing piece more tightly, and the sealing performance of the sealing surface is improved; even after the butterfly valve is installed in the pipeline, the butterfly valve can be operated outside the butterfly valve, the butterfly valve does not need to be disassembled, the operation convenience is obviously improved, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the field of butterfly valves, in particular to a hard sealing butterfly valve.
Background
The butterfly valve is also called as a flap valve, is a regulating valve with simple structure, can be used for the on-off control of low-pressure pipeline media, and is a valve which is characterized in that a closing member (a valve clack or a butterfly plate) is a disc and rotates around a valve shaft to realize the opening and closing. The prior Chinese utility model patent: a three-eccentric bidirectional hard sealing butterfly valve (patent publication number: CN 207178716U) discloses that a three-opening clamping ring is provided with circumferentially distributed adjusting screws, the tail ends of the adjusting screws are propped against a floating valve seat, the size of a movable compensation gap is adjusted by controlling the adjusting screws, and the tightness between the floating valve seat and a sealing ring is ensured. However, in the above technical solution, the butterfly valve needs to be pre-adjusted by an adjusting screw before being mounted on the pipeline, otherwise, the butterfly valve needs to be dismounted from the pipeline after the butterfly valve is mounted on the pipeline and the adjusting screw is rotated. In actual use, the butterfly valve is removed and readjusted, which is difficult to realize, and is very time-consuming and labor-consuming. In addition, even if the position of the floating valve seat is regulated, after the butterfly valve is used for a long time, the leakage amount can be gradually increased due to long-term accumulated flushing of the medium, the contact position between the butterfly valve and the pipeline has to be opened, the position of the floating valve seat is controlled to be moved by the regulating screw, and then an effective sealing surface is formed.
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 hard sealing butterfly valve which solves the problem that the position of a floating valve seat cannot be adjusted after the butterfly valve is arranged in a pipeline.
The technical scheme of the utility model is as follows: the valve comprises a valve body, a butterfly plate and a floating valve seat, wherein the floating valve seat is floatingly arranged on the inner wall of the valve body, a sealing element is arranged on the butterfly plate and can be contacted with the floating valve seat to form a sealing surface, a compression ring capable of axially moving is arranged in the valve body, and the compression ring is abutted against the floating valve seat in the axial direction of the floating valve seat; the valve body is provided with an adjusting mechanism, the adjusting mechanism comprises a plurality of inserting posts, and the end parts on the inserting posts are provided with inclined inserting surfaces which are inclined to the radial direction of the compression ring; the valve body is provided with a jack for inserting the inserting column along the radial direction of the pressing ring, the outer wall of the pressing ring is provided with an inclined slot which is matched with the shape of the inclined inserting surface, and the inserting column is inserted into the jack and can be further inserted into the inclined slot to drive the pressing ring to extrude towards the floating valve seat through inclined staggered matching.
By adopting the technical scheme, the pressing ring is extruded towards the floating valve seat due to the matching of the inclined planes of the inclined slot and the inclined inserting surface in a manner of being deeply inserted into the inserting column, so that the floating valve seat is in contact with the sealing piece more tightly, and the sealing performance of the sealing surface is improved; even after the butterfly valve is installed in the pipeline, the butterfly valve can be operated outside the butterfly valve, the butterfly valve does not need to be disassembled, the operation convenience is obviously improved, the working efficiency is improved, and the operation cost is reduced.
In one possible design, the adjusting mechanism comprises a clamp, a bolt member for shrinking the clamp is arranged on the clamp, and a plurality of inserting posts are uniformly distributed and fixedly arranged at the inner circle position of the clamp.
By adopting the design, the clamp is contracted through the fastening bolt, and each inserted column is driven to extend into the corresponding inclined slot, so that the whole compression ring is enabled to deviate to the direction of the valve seat accurately, the compression ring is prevented from moving askew and being blocked, and the inserted columns can be driven only through the fastening bolt, thereby improving the convenience of operation.
In one possible design, the inner and outer ends of the floating valve seat in the axial direction are respectively provided with an inner elastic pad and an outer elastic pad, the inner elastic pad is positioned between the valve body and the floating valve seat, and the outer elastic pad is positioned between the floating valve seat and the compression ring.
By adopting the design, the floating valve seat has a proper elastic floating range.
In one possible design, a preset gap is provided between the pressure ring and the valve body, the preset gap is located on the inner side end of the pressure ring in the axial direction, and the preset gap is reduced when the pressure ring is stressed to move.
By adopting the design, the preset gap enables the compression ring to have a movable space, and after the preset gap disappears completely, the compression ring is limited to move continuously through the valve body.
In one possible design, the outer wall of the compression ring is outwardly extended to form a step, a pre-tightening screw is arranged on the step in a penetrating manner, the pre-tightening screw is in threaded connection with the valve body, and a gasket capable of elastically extruding and deforming is arranged between the step and the valve body.
By adopting the design, the position of the compression ring is preset through the pre-tightening screw, and the gasket is compressed under pressure to enable the compression ring to shift.
In one possible design, a plurality of sealing rings are arranged at the joint between the pressing ring and the valve body, and the sealing rings are positioned at the front side and the rear side of the inclined slot.
By adopting the design, the medium is prevented from leaking from the jack, and the sealing effect is improved.
Drawings
FIG. 1 is a schematic diagram 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 a partial enlarged view of the utility model in a post deep insertion state;
FIG. 4 is a schematic view of the structure of the adjusting mechanism of the present utility model;
wherein, 1, the valve body; 2. a butterfly plate; 3. a floating valve seat; 21. a seal; 4. a compression ring; 5. an adjusting mechanism; 51. inserting a column; 511. oblique insertion surface; 11. a jack; 41. an oblique slot; 52. a clamp; 53. a bolt member; 31. an inner elastic pad; 32. an outer elastic pad; 12. presetting a gap; 42. a step; 43. pre-tightening a screw; 44. a gasket; 45. and (3) sealing rings.
Detailed Description
The hard sealing butterfly valve as shown in fig. 1-4 comprises a valve body 1, a butterfly plate 2 and a floating valve seat 3, wherein the floating valve seat 3 is floatingly arranged on the inner wall of the valve body 1, a sealing element 21 is arranged on the butterfly plate 2, the sealing element 21 can be contacted with the floating valve seat 3 to form an inclined sealing surface, a compression ring 4 capable of axially moving is arranged in the valve body 1, the compression ring 4 is abutted against the floating valve seat 3 in the axial direction of the floating valve seat 3, namely, the inner end face of the compression ring 4 in the axial direction is abutted against the outer end face of the floating valve seat 3 in the axial direction. The valve body 1 is provided with an adjusting mechanism 5, the adjusting mechanism 5 comprises a plurality of inserting posts 51, and the end part on the inserting posts 51 is provided with an inclined inserting surface 511 which is inclined to the radial direction of the compression ring 4; the valve body 1 is provided with an inserting hole 11 for inserting the inserting column 51 along the radial direction of the pressing ring 4, the outer wall of the pressing ring 4 is provided with an inclined inserting groove 41 which is matched with the shape of the inclined inserting surface 511, and the inserting column 51 is inserted into the inserting hole 11 and can be further inserted into the inclined inserting groove 41 so as to drive the pressing ring 4 to extrude towards the floating valve seat 3 through inclined staggered matching. Before the butterfly valve is mounted on the pipeline, the pressure ring 4 is preset to determine the position of the butterfly valve, so that the floating valve seat 3 and the sealing element 21 keep proper contact sealing degree. After the butterfly valve is installed in the pipeline, when the leakage of the sealing surface is found, the plug post 51 is deeply inserted into the inclined slot 41, the inclined slot 41 is in staggered fit with the inclined plug surface 511 through the inclined plane, the compression ring 4 is driven to move towards the floating valve seat 3, and the floating valve seat 3 is more extruded on the sealing piece 21, so that the leakage amount is reduced, and the sealing effect is maintained. The sealing surface in the structural mode has long service life and is very suitable for application scenes of long-period butterfly valves.
The adjusting mechanism 5 comprises a clamp 52, the clamp 52 is divided into two half rings, a bolt piece 53 for shrinking the clamp 52 is arranged between the two half rings of the clamp 52, and a plurality of inserting posts 51 are uniformly distributed and fixedly arranged at the inner circle position of the clamp 52. The bolts 53 are screwed, the two clamping bands 52 gradually approach to enable the clamping bands 52 to be in a contracted posture, so that each inserting column 51 is driven to be inserted into the corresponding inclined inserting slot 41, and the whole compression ring 4 is offset towards the valve seat direction.
The inner and outer ends of the floating valve seat 3 in the axial direction are respectively provided with an inner elastic pad 31 and an outer elastic pad 32, the inner elastic pad 31 and the outer elastic pad 32 have elastic extrusion deformation capacity, the inner elastic pad 31 is positioned between the valve body 1 and the floating valve seat 3, and the outer elastic pad 32 is positioned between the floating valve seat 3 and the compression ring 4. The floating valve seat 3 elastically floats along the axial direction, and the floating valve seat 3 can select a proper preset position according to the position of the pressure ring 4 so as to have tightness with the sealing element 21.
A preset gap 12 is arranged between the pressure ring 4 and the valve body 1, the preset gap 12 is positioned at the inner side end of the pressure ring 4 in the axial direction, and the preset gap 12 gradually reduces when the pressure ring 4 is stressed to move towards the valve seat. The preset gap 12 enables the compression ring 4 to have a movable space, and after the preset gap 12 is completely eliminated, the compression ring 4 is limited to move continuously through the valve body 1.
The outer wall of the pressure ring 4 is outwardly extended to form a step 42, a pre-tightening screw 43 is penetratingly arranged on the step 42, the pre-tightening screw 43 is in threaded connection with the valve body 1, and the pre-tightening screw 43 is pre-adjusted in advance to the position of the pressure ring 4 before the butterfly valve is arranged in a pipeline. An elastically-extrudable washer 44 is arranged between the step 42 and the valve body 1, and the washer 44 is compressed when the compression ring 4 is forced to move.
Two sealing rings 45 are arranged at the joint between the compression ring 4 and the valve body 1, and the two sealing rings 45 are positioned at the front side and the rear side of the inclined slot 41. The seal ring 45 is used to seal the joint and prevent leakage of medium from the joint to the receptacle 11.
Claims (6)
1. The utility model provides a hard seal butterfly valve, is including valve body, butterfly plate and float disk seat, float disk seat floating installation is on the inner wall of valve body, install sealing member on the butterfly plate, sealing member can form sealed face with float disk seat contact, its characterized in that: the valve body is internally provided with a compression ring capable of axially moving, and the compression ring is in abutting contact with the floating valve seat in the axial direction of the floating valve seat; the valve body is provided with an adjusting mechanism, the adjusting mechanism comprises a plurality of inserting posts, and the end parts on the inserting posts are provided with inclined inserting surfaces which are inclined to the radial direction of the compression ring; the valve body is provided with a jack for inserting the inserting column along the radial direction of the pressing ring, the outer wall of the pressing ring is provided with an inclined slot which is matched with the shape of the inclined inserting surface, and the inserting column is inserted into the jack and can be further inserted into the inclined slot to drive the pressing ring to extrude towards the floating valve seat through inclined staggered fit.
2. The hard seal butterfly valve of claim 1, wherein: the adjusting mechanism comprises a clamp, a bolt piece for shrinking the clamp is arranged on the clamp, and a plurality of inserting columns are uniformly distributed and fixedly arranged at the inner circle position of the clamp.
3. The hard seal butterfly valve according to claim 1 or 2, wherein: the inner elastic pad and the outer elastic pad are respectively arranged at the inner side and the outer side of the axial direction of the floating valve seat, the inner elastic pad is positioned between the valve body and the floating valve seat, and the outer elastic pad is positioned between the floating valve seat and the compression ring.
4. The hard seal butterfly valve according to claim 1 or 2, wherein: the pressure ring is provided with a preset gap between the pressure ring and the valve body, the preset gap is positioned at the inner side end of the axial direction of the pressure ring, and the preset gap is reduced when the pressure ring is stressed to move.
5. The hard seal butterfly valve according to claim 1 or 2, wherein: the outer wall of the compression ring is outwards extended to form a step, a pre-tightening screw is arranged on the step in a penetrating mode, the pre-tightening screw is in threaded connection with the valve body, and a gasket capable of elastically extruding and deforming is arranged between the step and the valve body.
6. The hard seal butterfly valve according to claim 1 or 2, wherein: and a plurality of sealing rings are arranged at the joint between the compression ring and the valve body, and the sealing rings are positioned at the front side and the rear side of the inclined slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321716152.2U CN220016126U (en) | 2023-06-30 | 2023-06-30 | Hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321716152.2U CN220016126U (en) | 2023-06-30 | 2023-06-30 | Hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220016126U true CN220016126U (en) | 2023-11-14 |
Family
ID=88676805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321716152.2U Active CN220016126U (en) | 2023-06-30 | 2023-06-30 | Hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220016126U (en) |
-
2023
- 2023-06-30 CN CN202321716152.2U patent/CN220016126U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |