CN220416273U - Eccentric hard seal butterfly valve - Google Patents
Eccentric hard seal butterfly valve Download PDFInfo
- Publication number
- CN220416273U CN220416273U CN202322080124.2U CN202322080124U CN220416273U CN 220416273 U CN220416273 U CN 220416273U CN 202322080124 U CN202322080124 U CN 202322080124U CN 220416273 U CN220416273 U CN 220416273U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- valve plate
- sealing
- metal
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 108
- 239000002184 metal Substances 0.000 claims abstract description 53
- 238000012856 packing Methods 0.000 claims description 27
- 210000004907 gland Anatomy 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000009991 scouring Methods 0.000 abstract description 2
- 239000003973 paint Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model provides an eccentric hard sealing butterfly valve, and relates to the field of butterfly valves. The valve plate is arranged in a through hole formed in the valve body, the valve rod sequentially penetrates through an upper shaft hole and a lower shaft hole of the valve plate to be connected with the valve plate into a whole in a matched mode, a metal valve plate sealing ring is arranged on a sealing surface of the valve plate and is in sealing fit with the valve plate through a valve plate pressing ring, a metal valve body sealing ring is arranged between the metal valve plate sealing ring and the valve body, and the outer side of the metal valve body sealing ring is tightly pressed and sealed through the valve body pressing ring; the sealing surface of the valve plate is positioned on one side of the axial center line of the valve rod, the center line of the valve plate is positioned on one side of the transverse center line of the valve rod, and an included angle is formed between the axis of the conical surface of the metal valve body sealing ring and the center line of the valve body; the metal valve plate sealing ring and the metal valve body sealing ring are respectively in a split structure with the valve body. The paint has higher scouring resistance, corrosion resistance and high temperature resistance, can adapt to a worse environment and has long service life; the disassembly, the assembly, the replacement and the maintenance are convenient.
Description
Technical Field
The utility model relates to the field of butterfly valves, in particular to an eccentric hard sealing butterfly valve.
Background
The eccentric hard sealing butterfly valve can replace the common butterfly valve to be installed in petroleum, chemical industry, food and medicine. The device can be used as a regulating and intercepting device in papermaking, hydropower, ships, water supply and drainage, smelting, energy sources and other systems, and can be installed at any position.
However, the eccentric butterfly valve in the prior art has the following defects: the existing eccentric butterfly valves are all multi-layer or nonmetallic valve plate sealing rings, and the sealing rings are easy to deform and wear in the use process; the existing eccentric hard sealing butterfly valve body sealing band and the valve body are integrated, the reverse pressure of 1:1 cannot be borne, the sealing surface of the valve body and the valve body are clamped simultaneously, and the valve body is heavy to process.
Disclosure of Invention
The utility model aims to provide an eccentric hard sealing butterfly valve which has higher anti-scouring performance, corrosion resistance and high temperature resistance, can adapt to a severe environment and prolongs the service life; the device is convenient to disassemble, assemble, replace or maintain, and has good sealing performance.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the eccentric hard sealing butterfly valve comprises a valve body, a valve plate and a valve rod, wherein the valve plate is arranged in a through hole formed in the valve body, the valve rod sequentially penetrates through an upper shaft hole and a lower shaft hole of the valve plate to be connected with the valve plate into a whole in a matched mode, a sealing surface of the valve plate is provided with a metal valve plate sealing ring, the metal valve plate sealing ring is matched with the valve plate in a sealing mode through a valve plate pressing ring, a metal valve body sealing ring is arranged between the metal valve plate sealing ring and the valve body, and the outer side of the metal valve body sealing ring is tightly sealed through the valve body pressing ring; the sealing surface of the valve plate is positioned on one side of the axial center line of the valve rod, the center line of the valve plate is positioned on one side of the transverse center line of the valve rod, and an included angle is formed between the axis of the conical surface of the metal valve body sealing ring and the center line of the valve body; the metal valve plate sealing ring and the metal valve body sealing ring are respectively in a split structure with the valve body.
Further, in the utility model, a first O-shaped sealing ring is arranged between the metal valve body sealing ring and the valve body, and a second O-shaped sealing ring is arranged between the metal valve plate sealing ring and the valve plate.
Further, in the present utility model, the valve rod is connected to the valve plate by means of a taper pin after passing through the upper and lower shaft holes of the valve plate.
Further, in the utility model, the top end of the valve rod is connected with the top of the valve body in a matched mode through the packing assembly and the support, the position, close to the through hole, of the valve rod is connected with the valve body in a matched mode through the shaft sleeve, and the bottom end of the valve rod is connected with the bottom of the valve body in a matched mode through the bottom end cover.
Further, in the utility model, the packing assembly comprises a packing ring, packing and a packing gland, and the packing ring, the packing and the packing gland are sleeved on the valve rod from bottom to top in sequence.
Further, the valve body pressing ring is fixed on the valve body through a pin, and the valve plate pressing ring is fixed on the valve plate through a pin.
The utility model has at least the following advantages or beneficial effects:
according to the utility model, the sealing surface of the valve plate is positioned on one side of the axial center line of the valve rod, so that the sealing surface of the valve plate is eccentric with the axial center line of the valve rod, the metal valve plate sealing ring is positioned on one side of the valve rod, and the integrity of the valve plate sealing ring is ensured; the center line of the valve plate is positioned at one side of the transverse center line of the valve rod, so that the center of the valve plate is eccentric with the transverse center line of the valve rod, and the eccentric center makes the areas of the valve plates at two sides of the valve shaft unequal, thereby obtaining larger unbalanced moment; by forming an included angle between the axis of the conical surface of the metal valve body sealing ring and the central line of the valve body, when the hard seal butterfly valve is in an open state, the valve plate sealing surface of the hard seal butterfly valve can be completely separated from the sealing surface of the metal valve body sealing ring, and a gap is formed between the valve plate sealing surface and the valve body sealing surface, so that mechanical abrasion or scratch caused between the valve plate sealing surface and the valve body sealing surface in the opening and closing process is avoided; by arranging the valve body sealing ring and the valve plate sealing ring as metal sealing rings, impurities in a medium can be squeezed out when the valve is used, the valve is not deformed and is not easy to wear, and the service life is long; through with the metal valve plate sealing washer with the metal valve body sealing washer respectively with the valve body sets up to split type structure, can carry out clamping and processing alone, but on-the-spot change or maintenance when sealed inefficacy improves efficiency, reduces cost of maintenance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an eccentric hard seal butterfly valve provided in an embodiment of the disclosure;
FIG. 2 is an exploded schematic view of an eccentric hard seal butterfly valve provided in an embodiment of the disclosure;
FIG. 3 is a side view of an eccentric hard seal butterfly valve provided by an embodiment of the disclosure;
FIG. 4 is a cross-sectional view of section A-A of FIG. 3 of the present application;
fig. 5 is a cross-sectional view of section B-B of fig. 3 of the present application.
Icon: 100-valve body, 200-valve plate, 210-metal valve plate sealing ring, 220-valve plate pressing ring, 230-metal valve body sealing ring, 240-valve body pressing ring, 250-first O-shaped sealing ring, 260-second O-shaped sealing ring, 270-taper pin, 300-valve rod, 400-bracket, 410-packing ring, 420-packing, 430-packing gland and 500-bottom end cover.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-5, a schematic structural diagram of an eccentric hard seal butterfly valve according to an embodiment of the utility model is shown;
the embodiment provides an eccentric hard sealing butterfly valve, which comprises a valve body 100, a valve plate 200 and a valve rod 300, wherein the valve plate 200 is arranged in a through hole formed in the valve body 100, the valve rod 300 sequentially penetrates through an upper shaft hole and a lower shaft hole of the valve plate 200 to be matched and connected with the valve plate 200 into a whole, a sealing surface of the valve plate 200 is provided with a metal valve plate sealing ring 210, the metal valve plate sealing ring 210 is in sealing fit on the valve plate 200 through a valve plate pressing ring 220, a metal valve body sealing ring 230 is arranged between the metal valve plate sealing ring 210 and the valve body 100, and the outer side of the metal valve body sealing ring 230 is in pressing sealing through a valve body pressing ring 240; wherein, the sealing surface of the valve plate 200 is positioned at one side of the axial center line of the valve rod 300, the center line of the valve plate 200 is positioned at one side of the transverse center line of the valve rod 300, and an included angle is formed between the conical surface axis of the metal valve body sealing ring 230 and the center line of the valve body 100; the metal valve plate seal ring 210 and the metal valve body seal ring 230 are respectively in a split structure with the valve body 100.
Next, an eccentric hard seal butterfly valve according to the present exemplary embodiment will be further described.
In some embodiments of the present application, the valve rod 300 sequentially passes through the upper shaft hole and the lower shaft hole of the valve plate 200 to be connected with the valve plate 200 in a matching manner, and the valve rod 300 is connected with the valve plate 200 through the taper pin 270, so that the connection strength is improved; the top end of the valve rod 300 is connected with the top of the valve body 100 in a matched manner through a packing assembly and a bracket 400, the packing assembly comprises a packing ring 410, a packing 420 and a packing gland 430, the packing ring 410, the packing 420 and the packing gland 430 are sequentially sleeved on the valve rod 300 from bottom to top, the position, close to the through hole, of the valve rod 300 is connected with the valve body 100 in a matched manner through a shaft sleeve, and the bottom end of the valve rod 300 is connected with the bottom of the valve body 100 in a matched manner through a bottom end cover 500; the valve plate 200 is installed in a through hole formed in the valve body 100, a metal valve plate sealing ring 210 is installed on a sealing surface of the valve plate 200, the metal valve plate sealing ring 210 is in sealing fit with the valve plate 200 through a valve plate pressing ring 220, and the valve plate pressing ring 220 is fixed on the valve plate 200 through a pin; a metal valve body sealing ring 230 is installed between the metal valve plate sealing ring 210 and the valve body 100, the outer side of the metal valve body sealing ring 230 is tightly pressed and sealed by a valve body pressing ring 240, and the valve body pressing ring 240 is fixed on the valve body 100 by a pin.
This application is through setting up the butterfly valve into metal valve plate sealing washer 210 and metal valve body sealing washer 230, adopt the metal material, the valve seal pair is metal to metal seal firmly, anti-scour performance is strong, corrosion-resistant, high temperature resistant, can cut off it and close when having impurity, foreign matter etc. to adhere to between the seal pair in the medium, adaptation is abominable operational environment, for present eccentric butterfly valve is multilayer or non-metal valve plate sealing washer 210, sealing washer yielding in the use, the defect of wearing and tearing, this application can extrude the impurity in the disconnected medium when using, can not warp difficult wearing and tearing, can prolong its life.
In some embodiments of the present application, the sealing surface of the valve plate 200 is located on the axial center line side of the valve rod 300, the center line of the valve plate 200 is located on the lateral center line side of the valve rod 300, and an included angle is formed between the conical surface axis of the metal valve body sealing ring 230 and the center line of the valve body 100.
This application adopts three eccentric structures: the first eccentricity is the eccentricity of the sealing surface of the valve plate 200 and the center of the valve shaft on the side surface, as shown in the first eccentricity A in FIG. 5, so that the integrity of the butterfly plate sealing ring is ensured; the second eccentric is the eccentric between the valve shaft center and the valve center, as shown in the second eccentric B in fig. 5, and the eccentric makes the butterfly plate areas at two sides of the valve shaft unequal, so that a larger unbalanced moment can be obtained, and the valve has the function of closing more tightly when the valve is closed under larger bearing pressure, and has reliable sealing performance; the third eccentricity is the valve seat centerline (the conical surface axis of the metal valve body seal 230) and the valve body 100 centerline form an angle a position, as shown in fig. 5 for the third eccentricity C. When the triple eccentric hard seal butterfly valve is in an open state, the valve plate 200 sealing surface of the triple eccentric hard seal butterfly valve is completely separated from the valve seat sealing surface, and a gap is formed between the valve plate 200 sealing surface and the valve body 100 sealing surface; the three-eccentric structure ensures that the butterfly plate does not scrape the valve seat when the valve is opened and closed, and the torque of the valve rod 300 is directly transmitted to the sealing surface through the butterfly plate, that is, almost no friction phenomenon occurs between the butterfly plate and the valve seat, thereby avoiding the common jumping phenomenon when the common valve is opened.
In some embodiments of the present application, the metal valve plate seal ring 210 and the metal valve body seal ring 230 are separate structures from the valve body 100. The butterfly valve body 100 sealing ring and the valve body 100 are separated. When bearing the reverse pressure, the sealing ring of the valve body 100 can move in a small range, and the deformation of the valve plate 200 can be automatically compensated to achieve the reverse sealing effect. The sealing ring of the split valve plate 200 can be processed independently, and the split valve plate is light in clamping and easy to ensure the processing precision and the smoothness of the split valve plate.
The sealing surfaces of the butterfly valve body 100 and the valve plate 200 are split, and if the sealing surfaces fail due to abnormal conditions, the sealing surfaces can be replaced on site, so that the valve maintenance time can be shortened, the maintenance efficiency can be improved, and the maintenance cost can be reduced; the sealing belt of the valve body 100 of the eccentric hard sealing butterfly valve can be integrated with the valve body 100, the problems that the reverse pressure of 1:1 cannot be born, the sealing surface of the valve body 100 and the valve body 100 are clamped simultaneously, the processing is heavy and the like can be solved.
In a preferred embodiment, a first O-ring 250 is provided between the metal valve body seal 230 and the valve body 100, and a second O-ring 260 is provided between the metal valve plate seal 210 and the valve plate 200. The sealing performance is further improved, the bidirectional complete sealing can be achieved, the leakage of the gas test is zero, the valve mounting direction does not need to be matched with the medium flow direction, and the valve can also be used as an emptying valve at the tail end of a pipeline.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The eccentric hard sealing butterfly valve comprises a valve body, a valve plate and a valve rod, wherein the valve plate is arranged in a through hole formed in the valve body, and the valve rod sequentially penetrates through an upper shaft hole and a lower shaft hole of the valve plate to be connected with the valve plate into a whole in a matched mode; the sealing surface of the valve plate is positioned on one side of the axial center line of the valve rod, the center line of the valve plate is positioned on one side of the transverse center line of the valve rod, and an included angle is formed between the axis of the conical surface of the metal valve body sealing ring and the center line of the valve body; the metal valve plate sealing ring and the metal valve body sealing ring are respectively in a split structure with the valve body.
2. The eccentric hard seal butterfly valve of claim 1, wherein a first O-ring is disposed between the metal valve body seal and the valve body, and a second O-ring is disposed between the metal valve plate seal and the valve plate.
3. The eccentric hard sealing butterfly valve of claim 1, wherein the valve stem is coupled to the valve plate by a conical pin after the valve stem passes through the upper and lower shaft bores of the valve plate.
4. The eccentric hard sealing butterfly valve of claim 1, wherein the top end of the valve rod is in fit connection with the top of the valve body through a packing assembly and a bracket, the valve rod is in fit connection with the valve body near the through hole through a shaft sleeve, and the bottom end of the valve rod is in fit connection with the bottom of the valve body through a bottom end cover.
5. The eccentric hard seal butterfly valve of claim 4, wherein the packing assembly comprises a packing ring, a packing, and a packing gland, the packing ring, the packing, and the packing gland being sequentially nested on the valve stem from bottom to top.
6. The eccentric hard seal butterfly valve of claim 1, wherein the valve body clamp ring is secured to the valve body by a pin and the valve plate clamp ring is secured to the valve plate by a pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322080124.2U CN220416273U (en) | 2023-08-03 | 2023-08-03 | Eccentric hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322080124.2U CN220416273U (en) | 2023-08-03 | 2023-08-03 | Eccentric hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220416273U true CN220416273U (en) | 2024-01-30 |
Family
ID=89653779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322080124.2U Active CN220416273U (en) | 2023-08-03 | 2023-08-03 | Eccentric hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220416273U (en) |
-
2023
- 2023-08-03 CN CN202322080124.2U patent/CN220416273U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10920891B2 (en) | Arranging butterfly valves for positive sealing of a valve assembly | |
| CN101216118B (en) | Hollow butterfly plate butterfly valve | |
| US8727316B1 (en) | Knife gate valve with urethane liner | |
| CN201344269Y (en) | Wafer type butterfly valve | |
| CN220416273U (en) | Eccentric hard seal butterfly valve | |
| CN108286614B (en) | Low flow resistance long life elastic sealing eccentric plug valve | |
| CN107084258B (en) | Butt-clamping fluorine ball valve | |
| CN211474940U (en) | Spherical bidirectional high-performance rotary valve | |
| CN208816703U (en) | A kind of double plate double-valve-seat bidirectional metals or the butterfly valve of nonmetallic sealing | |
| CN201554883U (en) | Inside screw non-rising stem type gate valve | |
| CN102943885A (en) | Bi-directional sealing elastic tri-eccentric butterfly valve | |
| CN202065499U (en) | Connection control valve | |
| CN209325067U (en) | Resistance to strong rotten particle-resistant fluoroplastic all-liner shut-off valve | |
| CN2416290Y (en) | Cone seal stop valve for liquid caustic soda | |
| CN108980376A (en) | Double plate double-valve-seat bidirectional metals or the butterfly valve of nonmetallic sealing | |
| CN115076387A (en) | U-shaped metal sealing butterfly valve | |
| CN214331552U (en) | One-piece type double-piston valve seat hard sealing fixed ball valve | |
| CN209213066U (en) | A kind of Multifunction ball valve | |
| CN2184123Y (en) | Eccentue and hydraulic ball-face locking butterfly valve | |
| CN208619705U (en) | Bidirection press self-balance stop valve | |
| CN210318570U (en) | Novel detachable pure metal butterfly valve double-included-angle sealing pair | |
| RU201715U1 (en) | CHECK VALVE | |
| CN209557683U (en) | Bi-direction zero-leakage three eccentric metal sealed butterfly valve | |
| CN109538775A (en) | Resistance to strong rotten particle-resistant fluoroplastic all-liner shut-off valve | |
| CN108708979A (en) | Bidirection press self-balance stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |