CN209354668U - A kind of ceramic seal three-eccentric-butterfly-valve - Google Patents
A kind of ceramic seal three-eccentric-butterfly-valve Download PDFInfo
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- CN209354668U CN209354668U CN201820277958.9U CN201820277958U CN209354668U CN 209354668 U CN209354668 U CN 209354668U CN 201820277958 U CN201820277958 U CN 201820277958U CN 209354668 U CN209354668 U CN 209354668U
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Abstract
The utility model discloses a kind of ceramic seal three-eccentric-butterfly-valves, including valve body, and it is intracorporal for turning off the valve plate of medium positioned at valve, and in longitudinal valve rod shaft for running through valve body, the valve rod shaft is fixedly connected with valve plate, bracket is provided at the top of the valve body, turbine actuator is provided on the bracket, the side of the valve plate is arranged with ceramic-seal ring, and the pressure ring for being pressed together on ceramic-seal ring on valve plate is provided on valve plate, it is provided in the valve body and the mutually matched ceramic valve seat of ceramic-seal ring, reinforcement rib is additionally provided on the valve plate, the reinforcement rib and valve plate are integrally formed；The ceramic seal three-eccentric-butterfly-valve has the advantages of structurally reasonable, erosive wear resistant, good seal performance.
Description
Technical field
A kind of the utility model valve technical field, and in particular to ceramic seal three-eccentric-butterfly-valve.
Background technique
Three-eccentric-butterfly-valve is a kind of valve rod shaft deviation sealing surface center line, and valve rod shaft deviates the center line of pipeline, with
And valve rod shaft and valve middle line are at a kind of valve of cone angle；Because its valid circulation area is big, flow of media resistance is small, so butterfly
Valve is usually used in heavy caliber and the pipeline of big flow, to replace the huge ball valve of volume and weight and cut body valve.It is common at present
The valve seat of three eccentric metal hard sealed butterfly damper is that the hard alloy being welded on valve body by heap is formed, and integrally formed with valve body,
The process of valve seat is complex, and flap uses multi-level composite sealing ring；Due to butterfly valve most feelings in actual operation
Normally open is under condition, the sealing ring of valve is washed away by the positive mobility that will receive medium with valve seat, makes sealing ring and valve
Positive contact scour position is washed away with Jie on seat and abrasiveness consumption, i.e. erosion corrosion occurs, therefore is resulted in butterfly valve and used one
The problem of will appear sealing performance decline after the section time, can not achieve zero leakage；Secondly butterfly valve valve plate when being turned off by
The impact dynamics of the medium arrived is larger, therefore is easy to be deformed valve plate, and then influences the sealing performance of butterfly valve.
Utility model content
In view of this, the utility model aim is to provide a kind of structurally reasonable, erosive wear resistant, the ceramics of good seal performance
Seal three-eccentric-butterfly-valve.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is:
A kind of ceramic seal three-eccentric-butterfly-valve, including valve body, and it is intracorporal for turning off the valve plate of medium positioned at valve, with
And in longitudinal valve rod shaft for running through valve body, the valve rod shaft is fixedly connected with valve plate, and branch is provided at the top of the valve body
Frame is provided with turbine actuator on the bracket, and the bottom of the bracket is fixedly connected with the valve body, and top and turbine actuator are solid
Fixed connection, the valve rod shaft and turbine actuator are sequentially connected, and the side of the valve plate is arranged with ceramic-seal ring, and valve plate
On be provided with pressure ring for being pressed together on ceramic-seal ring on valve plate, the pressure ring is fixedly connected with valve plate, in the valve body
It is provided with and is fixedly connected with the valve body with the mutually matched ceramic valve seat of ceramic-seal ring, the ceramic valve seat, on the valve plate also
It is provided with reinforcement rib, the reinforcement rib and valve plate are integrally formed.
Preferably, the reinforcement rib is provided with one or more, and reinforcement rib is laterally distributed on valve plate, helps
In the structural strength for improving valve plate.
Preferably, the ceramic-seal ring and ceramic valve seat are all ceramic sealing cup contg, silicon carbide and silicon carbide ceramics valve
Seat, the chemical corrosion resistance of silicon carbide ceramics is good, intensity is high, hardness is high, and wear-resisting property is good, coefficient of friction is small, therefore facilitates
Erosive wear caused when medium flow field is reduced, the sealing performance of valve is improved.
Preferably, the bottom and top of the valve rod shaft are arranged with bearing respectively, the bearing is self-lubricating bearing,
Help to make valve rod shaft flexible rotating on valve seat, self-lubricating helps to reduce the maintenance or non-maintaining of bearing.
Preferably, the bottom end of the valve rod shaft is additionally provided with bottom cover, it is clamped between the bottom cover and valve body close
Gasket, the bottom cover are fixedly connected with the valve body, and facilitate the sealing and anti-leakage of valve.
Preferably, the gasket seal is high-pressure graphite composite sealing pad, facilitate the sealing and anti-leakage of valve.
Preferably, being additionally provided with hold-down grid at the top of the valve body, the hold-down grid is set in valve rod shaft,
The hold-down grid is fixedly connected with the valve body, and filler is clamped between the hold-down grid and bearing, and the filler is flexible stone
Black filler facilitates the sealing and anti-leakage of valve.
The utility model has the technical effect that following aspect: close due to being provided with mutually matched silicon carbide ceramics
Seal ring and silicon carbide ceramics valve seat, silicon carbide ceramics is with chemical corrosion resistance is good, structural strength is high, hardness is high, wear-resisting property
It is good, coefficient of friction is small, therefore to erosive wear caused by ceramic-seal ring and ceramic valve seat when can effectively reduce medium flow field, from
And improve the sealing effect and long term reliability of butterfly valve；Reinforce rib, ribs due to being provided on valve plate plate
Item improves the structural strength of valve plate, reduces the pressure that pipeline internal medium acts on valve plate and the deformation generated, therefore into
One step improves the sealing performance of valve.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of ceramic seal three-eccentric-butterfly-valve of the utility model；
Fig. 2 is a kind of partial enlarged view of ceramic seal three-eccentric-butterfly-valve of the utility model；
Specific embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with attached drawing, so that the utility model technology
Scheme is more readily understood and grasps.
In the present embodiment, it is to be understood that term " centre ", "upper", "lower", " top ", " right side ", " left end ",
" top ", " back side ", " middle part ", etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, only
It is of the invention for ease of description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, the connection or fixed form between component if not otherwise specified in this embodiment, connection or solid
Determine mode can for fixed by bolt commonly used in the prior art or pin fix or pin shaft connection etc. modes, therefore, this
It is no longer described in detail in embodiment.
As shown in attached drawing 1-2, a kind of ceramic seal three-eccentric-butterfly-valve, including valve body 1, and be used in valve body 1
The valve plate 2 of medium is turned off, and in longitudinal valve rod shaft 3 for running through valve body 1, the valve rod shaft 3 is solid by pin with valve plate 2
Fixed, the top of the valve body 1 is provided with bracket 4, and turbine actuator 5 is provided on the bracket 4, the turbine actuator 5
Model QDX3-7, bottom and the valve body 1 of the bracket 4 are bolted, and top and turbine actuator 5 are solid by bolt
Fixed, the valve rod shaft 3 is sequentially connected with turbine actuator 5, and the side of the valve plate 2 is arranged with ceramic-seal ring 6, and valve plate
The pressure ring 21 for being pressed together on ceramic-seal ring 6 on valve plate 2 is provided on 2, the pressure ring 21 is solid by bolt with valve plate 2
It is fixed, be provided in the valve body 1 with the mutually matched ceramic valve seat 7 of ceramic-seal ring 6, on the ceramic valve seat 7 with 2 phase of valve plate
Pair the other side be provided with the retaining collar 71 for being fixed on ceramic valve seat 7 in valve body 1, the retaining collar 71 and valve body
1 is bolted, and is additionally provided on the valve plate 2 and reinforces rib 22, and the reinforcement rib 22 is integrally formed with valve plate 2.Institute
It states reinforcement rib 22 and is provided with one or more, and ribs 22 laterally distributed on valve plate 2, helps to improve valve plate 22
Structural strength.The ceramic-seal ring 6 and ceramic valve seat 7 are all ceramic sealing cup contg, silicon carbide and silicon carbide ceramics valve seat, carbonization
The chemical corrosion resistance of silicon ceramics is good, intensity is high, hardness is high, and wear-resisting property is good, coefficient of friction is small, therefore helps to reduce medium
Caused erosive wear when stream, improves the sealing performance of valve.The bottom and top of the valve rod shaft 3 are arranged with axis respectively
31 are held, the bearing 31 is self-lubricating bearing, helps to help valve rod shaft 3 flexible rotating, self-lubricating bearing on valve seat 1
In maintenance of the reduction to valve.The bottom end of the valve rod shaft 3 is additionally provided with bottom cover 32, between the bottom cover 32 and valve body 1
It is clamped with gasket seal 33, the bottom cover 32 is bolted with valve body 1, and the gasket seal 33 is that high-pressure graphite is compound close
Gasket facilitates the sealing and anti-leakage of valve.The top of the valve body 1 is additionally provided with hold-down grid 8,8 sets of the hold-down grid
It is located in valve rod shaft 3, the hold-down grid 8 is bolted with valve body 1, is pressed from both sides between the hold-down grid 8 and bearing 31
Hold filler 9, the filler 9 is flexible graphite packing, and filler 9 is provided with one layer or more, facilitates the sealing and anti-leakage of valve.
The utility model has the technical effect that following aspect: close due to being provided with mutually matched silicon carbide ceramics
Seal ring and silicon carbide ceramics valve seat, silicon carbide ceramics is with chemical corrosion resistance is good, structural strength is high, hardness is high, wear-resisting property
It is good, coefficient of friction is small, therefore to erosive wear caused by ceramic-seal ring and ceramic valve seat when can effectively reduce medium flow field, from
And improve the sealing effect and long term reliability of butterfly valve；Reinforce rib, ribs due to being provided on valve plate plate
Item improves the structural strength of valve plate, reduces the pressure that pipeline internal medium acts on valve plate and the deformation generated, therefore into
One step improves the sealing performance of valve.
Certainly, the representative instance of above only the utility model, in addition to this, the utility model can also have other a variety of
Specific embodiment, all technical solutions formed using equivalent substitution or equivalent transformation all fall within the requires of the utility model protection
Within the scope of.
Claims (7)
1. a kind of ceramic seal three-eccentric-butterfly-valve, including valve body, and positioned at the intracorporal valve plate for being used to turn off medium of valve, and
In longitudinal valve rod shaft for running through valve body, the valve rod shaft is fixedly connected with valve plate, is provided with bracket at the top of the valve body,
Turbine actuator is provided on the bracket, the bottom of the bracket is fixedly connected with the valve body, and top is fixed with turbine actuator
Connection, the valve rod shaft and turbine actuator are sequentially connected, it is characterised in that: the side of the valve plate is arranged with ceramic seal
Ring, and the pressure ring for being pressed together on ceramic-seal ring on valve plate is provided on valve plate, the pressure ring is fixedly connected with valve plate, institute
State be provided in valve body with the mutually matched ceramic valve seat of ceramic-seal ring, the ceramic valve seat is fixedly connected with the valve body, described
Reinforcement rib is additionally provided on valve plate, the reinforcement rib and valve plate are integrally formed.
2. a kind of ceramic seal three-eccentric-butterfly-valve according to claim 1, it is characterised in that: the reinforcement rib is provided with
One or more, and it is laterally distributed on valve plate to reinforce rib.
3. a kind of ceramic seal three-eccentric-butterfly-valve according to claim 1, it is characterised in that: the ceramic-seal ring and pottery
Porcelain valve seat is all ceramic sealing cup contg, silicon carbide and silicon carbide ceramics valve seat.
4. a kind of ceramic seal three-eccentric-butterfly-valve according to claim 1, it is characterised in that: the bottom of the valve rod shaft
It is arranged with bearing respectively with top, the bearing is self-lubricating bearing.
5. a kind of ceramic seal three-eccentric-butterfly-valve according to claim 2, it is characterised in that: the bottom end of the valve rod shaft
Portion is additionally provided with bottom cover, and gasket seal is clamped between the bottom cover and valve body, and the bottom cover is fixedly connected with the valve body.
6. a kind of ceramic seal three-eccentric-butterfly-valve according to claim 5, it is characterised in that: the gasket seal is high pressure
Graphite composite sealing gasket.
7. a kind of ceramic seal three-eccentric-butterfly-valve according to claim 1, it is characterised in that: the top of the valve body is also set
There is hold-down grid, the hold-down grid is set in valve rod shaft, and the hold-down grid is connected with valve body, the hold-down grid
Filler is clamped between bearing, the filler is flexible graphite packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820277958.9U CN209354668U (en) | 2018-02-26 | 2018-02-26 | A kind of ceramic seal three-eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820277958.9U CN209354668U (en) | 2018-02-26 | 2018-02-26 | A kind of ceramic seal three-eccentric-butterfly-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354668U true CN209354668U (en) | 2019-09-06 |
Family
ID=67779249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820277958.9U Active CN209354668U (en) | 2018-02-26 | 2018-02-26 | A kind of ceramic seal three-eccentric-butterfly-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209354668U (en) |
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2018
- 2018-02-26 CN CN201820277958.9U patent/CN209354668U/en active Active
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