CN219588134U - Elastic compensation sealed knife gate valve - Google Patents
Elastic compensation sealed knife gate valve Download PDFInfo
- Publication number
- CN219588134U CN219588134U CN202223212532.0U CN202223212532U CN219588134U CN 219588134 U CN219588134 U CN 219588134U CN 202223212532 U CN202223212532 U CN 202223212532U CN 219588134 U CN219588134 U CN 219588134U
- Authority
- CN
- China
- Prior art keywords
- filler
- pressing plate
- disc spring
- packing
- elastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000012856 packing Methods 0.000 claims description 33
- 239000000945 filler Substances 0.000 abstract description 24
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Sliding Valves (AREA)
Abstract
The utility model discloses an elastic compensation sealing knife gate valve, relates to the field of valves, and solves the problem that a filler is easy to leak after long-time use. The automatic cutting machine comprises a cutter flashboard, a valve body, a filler, a pressing plate and a support, wherein the pressing plate is arranged above the filler, a plurality of bolt pieces are arranged on the valve body in a threaded manner, the tail parts of the bolt pieces are in threaded connection with the valve body, the bolt pieces are movably penetrated into the pressing plate, elastic pieces are arranged outside the bolt pieces, and the upper ends and the lower ends of the elastic pieces are respectively elastically pressed on the head parts of the bolt pieces and the top surface of the pressing plate. When the filler is loose, the elastic piece is tightly pressed by the adjusting bolt piece, the elastic force of the elastic piece is transmitted to the pressing plate, the pressing plate extrudes the filler again, the filler is compensated by the elastic force of the elastic piece, the leakage of the filler after long-time use is effectively reduced, the sealing performance of the filler is improved, the service life of the filler is prolonged, the pressing degree of the cutter setting flashboard of the filler can be adjusted, and therefore the opening and closing difficulty of the cutter flashboard is avoided.
Description
Technical Field
The utility model relates to the field of valves, in particular to an elastic compensation sealing knife gate valve.
Background
The knife gate valve is mainly used as regulating and cut-off device, its opening and closing member is a gate plate, its moving direction is perpendicular to fluid direction, and the knife gate plate can cut fibre material to cut off medium. The packing on the upper part of the knife gate valve is mostly wound asbestos packing or two independent sealing pressing strips are used for achieving the purpose of sealing the upper part of the gate valve, and in the process of frequent opening and closing of the gate valve, the packing can be loosened due to the fact that the knife gate plate swings to a certain extent, so that leakage occurs on the upper part of the gate valve.
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 an elastic compensation sealing knife gate valve, which solves the problem that the filling material is easy to leak after long-time use.
The technical scheme of the utility model is as follows: the packing box comprises a knife flashboard, a valve body, packing, a pressing plate and a support, wherein a packing cavity for packing is formed in the valve body, the pressing plate is arranged above the packing, a plurality of bolt pieces are arranged on the valve body in a threaded manner, the tail parts of the bolt pieces are connected with the valve body in a threaded manner, the bolt pieces are movably penetrated in the pressing plate, an elastic piece is arranged outside the bolt pieces, and the upper end and the lower end of the elastic piece are respectively elastically propped against the head parts of the bolt pieces and the top surface of the pressing plate.
By adopting the technical scheme, when the filler is loose, the elastic piece is tightly pressed by the adjusting bolt piece, the elastic force of the elastic piece is transmitted to the pressing plate, and the pressing plate extrudes the filler again, so that the filler is compensated by the elastic force of the elastic piece, the leakage of the filler after long-time use is effectively reduced, the sealing performance of the filler is improved, the service life of the filler is prolonged, the compression degree of the cutter setting flashboard of the filler can be also adjusted, and the opening and closing difficulty of the cutter flashboard is avoided.
The utility model is further provided with: the bottom of the packing cavity is fixedly provided with a pressing ring, the cross section of the packing is trapezoid, the trapezoid is provided with an upper bottom, a lower bottom, a bottom bevel edge and a top bevel edge, the upper bottom of the trapezoid is abutted against the cavity wall of the packing cavity, the lower bottom of the trapezoid is abutted against the flashboard of the knife, the bottom surface of the pressing plate is abutted against the top bevel edge of the trapezoid, and the top surface of the pressing ring is abutted against the bottom bevel edge of the trapezoid.
By adopting the further arrangement, the pressing plate can be pressed towards the packing direction and can be converted into the pressing of the packing towards the direction of the cutter flashboard, so that the action of the pressing plate is more effective, the sealing effect is further improved, and the leakage amount is obviously reduced.
Still further, the present utility model provides: the elastic piece is a disc spring group formed by stacking and combining a plurality of layers of disc springs.
By adopting the further arrangement, the disc spring has large axial load and short stroke requirement, can bear larger load, and is very suitable for elastic compensation of the filler.
Still further, the present utility model is provided with: the disc spring sets comprise a plurality of forward disc spring sets and a plurality of reverse disc spring sets, the forward disc spring sets and the reverse disc spring sets are alternately stacked, and each of the forward disc spring sets or the reverse disc spring sets comprises two disc springs stacked in the same direction.
By adopting the further arrangement, the load and the elastic travel of the disc spring set in the lamination mode can be optimized, and the disc spring set can also stably apply force.
Still further, the present utility model is provided with: the head of the bolt piece is provided with a nut which is in pressing fit with the elastic piece.
By adopting the further arrangement, the rotating nut can be operated, and the operation is simple and convenient.
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;
wherein, 1, a knife flashboard; 2. a valve body; 3. a filler; 4. a pressing plate; 5. a bracket; 11. a filler cavity; 6. a bolt member; 7. an elastic member; 8. a compression ring; 31. an upper bottom; 32. a lower bottom; 33. a bottom bevel edge; 34. a top bevel edge; 71. a forward disc spring set; 72. a reverse disc spring set; 61. and (3) a nut.
Detailed Description
The knife gate valve with elastic compensation seal as shown in fig. 1 and 2 comprises a knife gate plate 1, a valve body 2, a packing 3, a pressing plate 4 and a bracket 5, wherein the knife gate plate 1 is movably lifted on the valve body 2 to open and close the valve, a packing cavity 11 for packing the packing 3 is formed in the valve body 2, the pressing plate 4 is arranged above the packing 3, and the bracket 5 is fixedly arranged above the valve body 2. A plurality of bolt pieces 6 are arranged on the valve body 2 in a threaded manner, the tail parts of the bolt pieces 6 are in threaded connection with the valve body 2, the body of the bolt pieces 6 further movably penetrates through the pressing plate 4, an elastic piece 7 is arranged outside the bolt pieces 6, and the upper end and the lower end of the elastic piece 7 are respectively elastically pressed on the head part of the bolt pieces 6 and the top surface of the pressing plate 4. After the leakage condition occurs at the position of the filler 3 used for a long time, the filler 3 does not need to be overhauled, the bolt piece 6 can be directly screwed, the elastic piece 7 is compressed and pressed on the pressing plate 4 under the stress, and the pressing plate 4 presses the filler 3 downwards, so that the tightness of the filler 3 is elastically compensated.
The bottom of the packing cavity 11 is fixedly provided with a pressing ring 8, the cross section of the packing 3 is in a vertically-turned trapezoid shape, the trapezoid is provided with an upper bottom 31, a lower bottom 32, a bottom bevel edge 33 and a top bevel edge 34, the size of the upper bottom 31 is smaller than that of the lower bottom 32, the upper bottom 31 of the trapezoid is abutted against the cavity wall of the packing cavity 11, the lower bottom 32 of the trapezoid is abutted against the knife gate plate 1, the bottom surface of the pressing plate 4 is abutted against the top bevel edge 34 of the trapezoid, and the top surface of the pressing ring 8 is abutted against the bottom bevel edge 33 of the trapezoid, so that the contact surface of the pressing ring 8 and the packing 3 is inclined relative to the surface of the knife gate plate 1. When the pressing plate 4 is pressed towards the packing 3, the packing 3 can be pressed towards the direction of the cutter flashboard 1, and the packing 3 can approach towards the direction of the cutter flashboard 1 when being pressed, so that the packing 3 is pressed at a position close to the cutter flashboard 1, and leakage is easy to occur.
The elastic piece 7 is a disc spring set formed by stacking and combining multiple layers of disc springs, the disc spring set comprises a plurality of forward disc spring sets 71 and a plurality of reverse disc spring sets 72, the forward disc spring sets 71 and the reverse disc spring sets 72 are arranged in opposite directions, the forward disc spring sets 71 and the reverse disc spring sets 72 are in crossed lamination, and the forward disc spring sets 71 or the reverse disc spring sets 72 respectively comprise two disc springs stacked in the same direction. The load and the elastic stroke of the disc spring set in the lamination mode can be optimized, and the disc spring set can also apply force stably.
The head of the bolt member 6 is provided with a nut 61, the nut 61 is in pressing fit with the elastic member 7, and the bolt member 6 can be adjusted to ascend or descend by rotating the nut 61.
Claims (4)
1. The utility model provides an elasticity compensation sealed knife gate valve, is including knife flashboard, valve body, packing, clamp plate and support, set up the packing chamber that supplies the packing to pack in on the valve body, clamp plate installs in the top of packing, its characterized in that: the valve body is provided with a plurality of bolt pieces in a threaded manner, the tail parts of the bolt pieces are in threaded connection with the valve body, the bolt pieces also movably penetrate through the pressing plate, an elastic piece is arranged outside the bolt pieces, and the upper ends and the lower ends of the elastic pieces are respectively elastically pressed against the head parts of the bolt pieces and the top surface of the pressing plate; the bottom of the packing cavity is fixedly provided with a pressing ring, the cross section of the packing is trapezoid, the trapezoid is provided with an upper bottom, a lower bottom, a bottom bevel edge and a top bevel edge, the upper bottom of the trapezoid is close to the cavity wall of the packing cavity, the lower bottom of the trapezoid is close to the cutter flashboard, the bottom surface of the pressing plate is close to the top bevel edge of the trapezoid in a fitting manner, and the top surface of the pressing ring is close to the bottom bevel edge of the trapezoid in a fitting manner.
2. The resilient compensating seal knife gate valve of claim 1, wherein: the elastic piece is a disc spring group formed by stacking and combining multiple layers of disc springs.
3. The resilient compensating seal knife gate valve of claim 2, wherein: the disc spring sets comprise a plurality of forward disc spring sets and a plurality of reverse disc spring sets, the forward disc spring sets and the reverse disc spring sets are alternately stacked, and each of the forward disc spring sets and the reverse disc spring sets comprises two disc springs stacked in the same direction.
4. The resilient compensating seal knife gate valve of claim 1, wherein: the head of the bolt piece is provided with a nut which is in pressing fit with the elastic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223212532.0U CN219588134U (en) | 2022-11-30 | 2022-11-30 | Elastic compensation sealed knife gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223212532.0U CN219588134U (en) | 2022-11-30 | 2022-11-30 | Elastic compensation sealed knife gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219588134U true CN219588134U (en) | 2023-08-25 |
Family
ID=87691201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223212532.0U Active CN219588134U (en) | 2022-11-30 | 2022-11-30 | Elastic compensation sealed knife gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219588134U (en) |
-
2022
- 2022-11-30 CN CN202223212532.0U patent/CN219588134U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Knife Gate Valve with Elastic Compensation Sealing Effective date of registration: 20231202 Granted publication date: 20230825 Pledgee: Industrial and Commercial Bank of China Limited Yongjia sub branch Pledgor: Zhengguang Valve Group Co.,Ltd. Registration number: Y2023330002941 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |