CN206036287U - Two -way unsteady valve holder structure of self -adaptation - Google Patents
Two -way unsteady valve holder structure of self -adaptation Download PDFInfo
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- CN206036287U CN206036287U CN201620954574.7U CN201620954574U CN206036287U CN 206036287 U CN206036287 U CN 206036287U CN 201620954574 U CN201620954574 U CN 201620954574U CN 206036287 U CN206036287 U CN 206036287U
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Abstract
The utility model discloses a two -way unsteady valve holder structure of self -adaptation, including the valve body, be equipped with the disk seat and the spherical crown of mutually supporting in the valve body, its characterized in that: still including connecting the annular clamp plate that is close to the spherical crown side at the valve body, the disk seat is located between clamp plate and valve body and all there are axle clearance in both sides and clamp plate and valve body, the first spring, disk seat and the clamp plate that are equipped with the axial compressed between disk seat and valve body are equipped with the second spring of axial compressed within a definite time, disk seat axial between valve body and clamp plate is floated, and just first spring, second spring make a concerted effort to locate sealed cooperation with disk seat and spherical crown at sealed face. The utility model discloses a sealing load is vicely applyed for sealed to the effect of making a concerted effort of two spring assemblies, and under the operating pressure of difference, disk seat and spring assembly can the adjustment of self -adaptation ground, apply reasonable sealing force and on sealed face, reach the two -way unsteady effect of self -adaptation.
Description
Technical field
This utility model is related to valve technology field, in particular to a kind of self adaptation two-way floating valve seat construction.
Background technology
In prior art, eccentric semi-spherical valve base is divided into fixed valve seat and floating type valve seat.Fixed valve seat construction letter
It is single, but in low pressure, sealing surface is difficult to set up reliably sealing than pressure, and during high pressure, sealing surface contact stress is again excessive, and valve is significantly increased
Door unlatching moment；Conventional floating valve seat is generally unidirectional to float, although can ensure that
Pressure, but it is difficult to reliable two way seal.
The content of the invention
The purpose of this utility model seeks to solve the deficiency of above-mentioned background technology, there is provided can be effective under a kind of high-low pressure
The self adaptation two-way floating valve seat construction of two way seal.
The technical solution of the utility model is：A kind of self adaptation two-way floating valve seat construction, including valve body, is provided with valve body
The valve seat for cooperating and spherical crown, it is characterised in that：Also include being connected to annular pressing plate of the valve body near spherical crown side, the valve seat
There is axial gap positioned between pressing plate and valve body and between both sides and pressing plate and valve body, between the valve seat and valve body, be provided with axial quilt
First spring of compression, the second spring axially compressed between valve seat and pressing plate, is provided with, the valve seat is in valve body and pressing plate countershaft
To floating and the first spring, second spring are made a concerted effort the sealing cooperation at the sealing surface by valve seat and spherical crown.
Preferably, multiple first springs, second spring are circumferentially spaced uniform in valve seat both sides.
Preferably, the valve interior surface forms stepped annular mounting groove, and the mounting groove is to forming valve seat between pressing plate
Installation cavity, it is the first axial mounting surface that the mounting groove includes being connected, the second radially installed face, the 3rd axially mounted
Face.
Further, the valve seat includes the annular protrusion being radially arranged, and the projection is closed on valve body-side in valve seat and formed
The 4th radial direction step surface being connected and the 5th axial step face, it is described it is raised valve seat close on pressing plate side formed be connected the
Six radial direction step surfaces and the 7th axial step face；The valve seat is located in installation cavity, and the protruding apex and first is axially pacified
Dress face coordinates, and the 5th axial step face is coordinated with the 3rd axially mounted face, and the pressing plate bottom is coordinated with the 7th axial step face；
Axial gap is formed between the 4th radial direction step surface and the second radially installed face, forms axle between the 6th radial direction step surface and pressing plate
To gap.
Further, it is respectively equipped with the 4th radial direction step surface of the valve seat projection both sides, the 6th radial direction step surface
First installation cavity and the second installation cavity of axial indent, the first spring are arranged at the first installation intracavity, and second spring is arranged at
Two install intracavity.
Preferably, the first axial gap, the 6th footpath is formed between the 4th radial direction step surface and the second radially installed face
The second axial gap is formed between on the inside of step surface and pressing plate, is less than the second gap without first gap under water pressure condition.
Preferably, it is provided with circumferential annular groove and groove on the 5th axial step face of the valve seat and is provided with and valve body
The sealing ring that 3rd axially mounted face coordinates, with diameter greater than diameter at sealing surface at the valve seat insert.
Preferably, coefficient of elasticity K2 of coefficient of elasticity K1 of first spring more than second spring.
Further, first spring is that wavy spring or multiple butterfly springs connect to be formed, and second spring is spiral
Spring.
Preferably, the sealing surface is to arrange polytetrafluoroethylplastic plastic block to be formed at soft seal with spherical crown on valve seat.
The beneficial effects of the utility model are：
1. seal pressure, under different operating pressures, valve are applied for sealing pair by the force action of two groups of springs
Seat and groups of springs can be adaptively adjusted, and apply rational sealing force on sealing surface, reach the effect of self adaptation two-way floating
Really.
2. the hydraulic pressure direction that pair valve bears is insensitive, and two way seal performance is excellent, no matter positive pressure or reversely presses
Power, can have good sealing effectiveness.
3. reliable seal pressure can be set up in low pressure, it is ensured that low pressure is reliably sealed；Sealing surface can be controlled in high pressure
Contact stress reduces valve opening torque and reduces sealing surface wear in zone of reasonableness.
Description of the drawings
Fig. 1 is this utility model structural representation
Fig. 2 is pressing plate and valve body connection diagram
Fig. 3 is valve seat construction schematic diagram
This utility model sealing principle schematic diagram when Fig. 4 is positive hydraulic pressure
This utility model sealing principle schematic diagram when Fig. 5 is reverse water pressure
Wherein：1- valve bodies, 2- valve seats, 3- spherical crowns, 4- pressing plates, the first springs of 5-, 6- second springs, 7- sealing surfaces, 8-
One installation cavity, the second installation cavitys of 9-, 10- grooves, 11- sealing rings, 12- mounting grooves, 13- installation cavities, the modeling of 14- politef
Material block, 15- spheroids, the first axial mounting surfaces of 12.1-, the second radially installeds of 12.2- face, the 3rd axially mounted faces of 12.3-, 2.1-
Projection, the 4th radial direction step surfaces of 2.2-, the 5th axial step faces of 2.3-, the 6th radial direction step surfaces of 2.4-, the 7th axial platforms of 2.5-
Terrace.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As Figure 1-3, the self adaptation two-way floating valve seat construction that this utility model is provided, including valve body 1, in valve body 1
The valve seat 2 and spherical crown 3 for cooperating is provided with, spherical crown 3 is connected on spheroid 15, also including valve body 1 being connected near spherical crown side
Pressing plate 4, valve seat 2 are located between pressing plate 4 and valve body 1 and there are axial gap, both sides on valve seat between both sides and pressing plate 4 and valve body 1
The first spring 5, the second spring 6 axially compressed is respectively equipped with, multiple first springs 5, second spring 6 are in valve seat both sides along week
To uniformly at intervals, the end of the first spring 5 is against on valve body 1, and the end of second spring 6 is against on pressing plate 4, and sealing surface 7 is located at
On valve seat 2, sealing surface 7 is to arrange polytetrafluoroethylplastic plastic block 14 to be formed at soft seal with the spherical crown 3 of metal material on valve seat 2.
Valve seat 2 axially floats between valve body 1 and pressing plate 4 and the first spring 5, second spring 6 are made a concerted effort valve seat 2 with spherical crown 3 in sealing surface 7
Place's sealing coordinates.Due to valve seat construction generally rotary structure, axial cross sections of the Fig. 1 for valve seat construction, the first spring 5, the
Two springs 6 are placed exactly on section.
As shown in Fig. 21 inner surface of valve body forms stepped annular mounting groove 12, on the inside of mounting groove 12 to pressing plate 4 between formed
The installation cavity 13 of valve seat 2, the first axial mounting surface 12.1 that mounting groove 12 includes being connected, the second radially installed face 12.2,
3rd axially mounted face 12.3.
As shown in figure 3, valve seat 2 includes the annular protrusion 2.1 being radially arranged, raised 2.1 close on valve body-side in valve seat forms
The 4th radial direction step surface 2.2 being connected and the 5th axial step face 2.3, raised 2.1 close on pressing plate side in valve seat forms connected
The 6th radial direction step surface 2.4 for connecing and the 7th axial step face 2.5；4th radial direction step surface the 2.2, the 6th of raised 2.1 both sides
It is respectively equipped with first installation cavity 8 and the second installation cavity 9 of axial indent on radial direction step surface 2.4,8 quantity of the first installation cavity and the
One spring, 5 correspondence, each first spring 5 are arranged in the first installation cavity 8 and are fixed on 8 bottom of the first installation cavity, the second installation cavity 9
Quantity is corresponding with second spring 6, and each second spring 6 is arranged in the second installation cavity 9 and is fixed on 9 bottom of the second installation cavity.
Valve seat 2 is located in installation cavity 13, and raised 2.1 top is coordinated with the first axial mounting surface 12.1, the 5th axial platform
Terrace 2.3 is coordinated with the 3rd axially mounted face 12.3, and 4 bottom of pressing plate is coordinated with the 7th axial step face 2.5.Due to the first spring
5 ends are against on the second radially installed face 12.2, are formed axially between the 4th radial direction step surface 2.2 and the second radially installed face 12.2
The first gap S1；As 6 end of second spring is against on the inside of pressing plate 4 (left side in Fig. 2), the 6th radial direction step surface 2.4 and pressure
The second axial gap S2 is formed between on the inside of plate 4.Valve closing is without first gap the second gaps of S1 ＜ S2 under water pressure condition.5th
The sealing being provided with threeth axially mounted face 12.3 cooperation of valve body is provided with annular groove 10 and groove on axial step face 2.3
Circle 11, at valve seat insert 11, diameter of phi D2 is more than diameter of phi D1 at sealing surface 7.
Coefficient of elasticity K2 of coefficient of elasticity K1 of the first spring 5 more than second spring 6.First spring 5 is multiple butterfly bullets
Spring is formed by connecting or wavy spring, and second spring 6 is helical spring.In the present embodiment, the first spring 5 connects for multiple butterfly springs
Connect and form, coefficient of elasticity K1 is much larger than coefficient of elasticity K2.When valve be in opening, i.e., spherical crown 3 unclamp with valve seat 2 not in contact with
When, distress resolves of the spherical crown 3 to valve seat 2, valve seat 2 can be moved to the left, and the second gap S2 gives coefficient of elasticity K2 less second bullet
Spring 6 provides larger extending space to the left, and when valve is closed, i.e., valve seat 2 and spherical crown 3 coordinate, and valve bears reverse height
During pressure, valve seat 2 can move right, and it is empty that the first gap S1 provides less stretching, extension to the right to the first larger spring 5 of coefficient of elasticity K1
Between.
Operation principle of the present utility model is：
When valve normal switching-off does not receive hydraulic pressure, the first spring 5, second spring 6 make a concerted effort to provide for sealing pair at sealing surface 7
Than pressure, in the present embodiment, the first spring 5 reaches 80% of maximum compressibility or so to initial sealing, and second spring 6 reaches maximum pressure
60% of contracting amount or so.
When valve receives low hydraulic pressure, Φ D2 are more bigger than Φ D1, but difference is very little, in valve by no matter positive (from left to right)
Or reversely when the low hydraulic pressure (typically less than 0.1MPa) of (from right to left) is acted on, water pressure suffered by valve seat 2 is in a basic balance, therefore low pressure
When the secondary seal pressure of valve seal be essentially close to the initial sealing of sealing pair than pressure, therefore have good sealing effectiveness.
As shown in figure 4, when valve bears positive high pressure (from left to right, close to valve nominal pressure), spheroid due to
Some gaps present in assembling (gap of valve shaft and spheroid joint gap, valve shaft and bearing etc.) and elastic deformation, spheroid 15
Can offset to valve seat 2；And valve seat also adaptively can deviate under spherical thrust effect to the right, side-play amount and spheroid side-play amount
It is equal；If spheroid 15 increases to 10% that the side-play amount of valve seat 2 is 5 decrement of the first spring, the now decrement of the first spring 5
10%, the decrement of second spring 6 is slightly reduced (second spring 6 be low k, high deflection spring), therefore first spring 5,
Thrust F to the left that second spring 6 is made a concerted effort to the applying of valve seat 2Groups of springsLess receive to increase during hydraulic pressure；Simultaneously as Φ D2 and Φ D1
The difference of presence, water pressure can produce water pressure F to the right to valve seatHydraulic pressure, FHydraulic pressureSize be just approximately equal to FGroups of springsIncreasing
It is value added, therefore sealing force F of the sealing surface in high pressureSealingF should be equal toGroups of springsDeduct FHydraulic pressure, it is approximately equal to the initial sealing of sealing pair than pressure.
As shown in figure 5, when valve bears high back voltage (from right to left, close to valve nominal pressure), spheroid due to
Some gaps present in assembling (gap of valve shaft and spheroid joint gap, valve shaft and bearing etc.) and elastic deformation, spheroid 15
Can offset to 2 opposite direction of valve seat；And valve seat also adaptively can deviate under groups of springs effect to the left, side-play amount is inclined with spheroid
Shifting amount is equal；If valve seat side-play amount is about the 10% of 1 decrement of groups of springs, now the decrement of the first spring 5 reduces 10%,
6 decrement of second spring is slightly increased, thrust F to the left applied to valve seat 2 therefore the first spring 5, second spring 6 are made a concerted effortGroups of springsCompared with
Do not receive to reduce during hydraulic pressure；Simultaneously as the difference that Φ D2 and Φ D1 are present, water pressure can produce a hydraulic pressure to the left to valve seat
Power FHydraulic pressure, FHydraulic pressureSize be just approximately equal to FGroups of springsDecreasing value, therefore sealing force F of the sealing surface in high pressureSealingF should be equal toGroups of springsPlus
Upper FHydraulic pressure, it is approximately equal to the initial sealing of sealing pair than pressure.
When valve switch, valve seat can keep balance all the time under the first spring 5, the collective effect of second spring 6, therefore
The impulsive force to sealing surface is prevented from during valve opening and closing, the impact failure to sealing surface is prevented；Due to the first spring 5
K values are big more than the K values of second spring 6, and the deformable amount of the first spring 5 is less than second spring 6, therefore in valve opening and closing
During, the movement travel in the first spring 5, under second spring 6 is acted on of valve seat is very little (variable less than the first spring 5
Shape amount), the eccentric throw for coordinating valve appropriate, it is ensured that sealing surface of seat departs from for 5 ° or so in unlatching, can reduce and open and close
Abrasion of the journey to sealing surface.
Claims (10)
1. a kind of self adaptation two-way floating valve seat construction, including be provided with valve body (1), valve body (1) valve seat (2) that cooperates and
Spherical crown (3), it is characterised in that：Also include being connected to annular pressing plate (4) of the valve body near spherical crown side, described valve seat (2) are located at pressure
There is axial gap, valve seat (2) and valve body (1) between plate (4) and valve body (1) and between both sides and pressing plate (4) and valve body (1)
Between be provided with axially compressed the first spring (5), be provided with the axial second spring (6) compressed between valve seat (2) and pressing plate (4),
Valve seat (2) axially float between valve body (1) and pressing plate (4) and the first spring (5), second spring (6) are made a concerted effort valve seat (2)
At sealing surface (7) place, sealing coordinates with spherical crown (3).
2. structure as claimed in claim 1, it is characterised in that：Multiple first spring (5), second spring (6) are in valve seat
Both sides are circumferentially spaced uniform.
3. structure as claimed in claim 1, it is characterised in that：Valve body (1) inner surface forms stepped annular mounting groove
(12), the installation cavity (13) of mounting groove (12) to formation valve seat (2) between pressing plate (4), described mounting groove (12) include phase
The axial mounting surface (12.1) of the first of connection, the second radially installed face (12.2), the 3rd axially mounted face (12.3).
4. structure as claimed in claim 3, it is characterised in that：Described valve seat (2) include the annular protrusion being radially arranged
(2.1), the projection (2.1) closes on the 4th radial direction step surface (2.2) and the 5th axial direction that valve body-side formation is connected in valve seat
Step surface (2.3), the projection (2.1) close on pressing plate side in valve seat and form the 6th radial direction step surface (2.4) that is connected and the
Seven axial step faces (2.5)；Described valve seat (2) are located in installation cavity (13), and projection (2.1) top is axially pacified with first
Dress face (12.1) coordinates, and the 5th axial step face (2.3) is coordinated with the 3rd axially mounted face (12.3), pressing plate (4) bottom
Coordinate with the 7th axial step face (2.5)；Formed between the 4th radial direction step surface (2.2) and the second radially installed face (12.2)
Axial gap, forms axial gap between the 6th radial direction step surface (2.4) and pressing plate (4).
5. structure as claimed in claim 4, it is characterised in that：The 4th radial direction step surface of described valve seat projection (2.1) both sides
(2.2) first installation cavity (8) and the second installation cavity (9) of axial indent, is respectively equipped with the 6th radial direction step surface (2.4), the
One spring (5) is arranged in the first installation cavity (8), and second spring (6) is arranged in the second installation cavity (9).
6. structure as claimed in claim 4, it is characterised in that：The 4th radial direction step surface (2.2) and the second radially installed
Form the first axial gap between face (12.2), on the inside of the 6th radial direction step surface (2.4) and pressing plate (4) between form axial second
Gap, is less than the second gap without first gap under water pressure condition.
7. structure as claimed in claim 4, it is characterised in that：The valve seat (2) is provided with week on the 5th axial step face (2.3)
To annular groove (10) and groove (10) in be provided with the sealing ring (11) that coordinates with the 3rd of valve body the axially mounted face (12.3),
Valve seat insert (11) place is with diameter greater than sealing surface (7) place diameter.
8. structure as claimed in claim 1, it is characterised in that：Coefficient of elasticity K1 of the first spring (5) is more than the second bullet
Coefficient of elasticity K2 of spring (6).
9. structure as claimed in claim 8, it is characterised in that：Described first spring (5) are wavy spring or multiple butterfly bullets
Spring connects to be formed, and second spring (6) is helical spring.
10. structure as claimed in claim 1, it is characterised in that：Described sealing surface (7) are to arrange polytetrafluoroethyl-ne on valve seat (2)
Alkene plastics block (14) is formed at soft seal with spherical crown (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954574.7U CN206036287U (en) | 2016-08-26 | 2016-08-26 | Two -way unsteady valve holder structure of self -adaptation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954574.7U CN206036287U (en) | 2016-08-26 | 2016-08-26 | Two -way unsteady valve holder structure of self -adaptation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206036287U true CN206036287U (en) | 2017-03-22 |
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ID=58304127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620954574.7U Active CN206036287U (en) | 2016-08-26 | 2016-08-26 | Two -way unsteady valve holder structure of self -adaptation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206036287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151576A (en) * | 2016-08-26 | 2016-11-23 | 武汉大禹阀门股份有限公司 | A kind of self adaptation two-way floating valve seat construction |
| CN114458792A (en) * | 2022-02-17 | 2022-05-10 | 科科集团有限公司 | Hard-to-hard high-temperature movable rotary ball valve with double compensation sealing structure |
-
2016
- 2016-08-26 CN CN201620954574.7U patent/CN206036287U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151576A (en) * | 2016-08-26 | 2016-11-23 | 武汉大禹阀门股份有限公司 | A kind of self adaptation two-way floating valve seat construction |
| CN106151576B (en) * | 2016-08-26 | 2019-02-19 | 武汉大禹阀门股份有限公司 | A kind of adaptive two-way floating valve seat construction |
| CN114458792A (en) * | 2022-02-17 | 2022-05-10 | 科科集团有限公司 | Hard-to-hard high-temperature movable rotary ball valve with double compensation sealing structure |
| CN114458792B (en) * | 2022-02-17 | 2024-04-19 | 科科集团有限公司 | Hard bump hard high-temperature movement double-compensation sealing structure ball rotating valve |
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| GR01 | Patent grant |