CN206539696U - Sealing device for changing sealing ring tankful rate - Google Patents
Sealing device for changing sealing ring tankful rate Download PDFInfo
- Publication number
- CN206539696U CN206539696U CN201720185152.2U CN201720185152U CN206539696U CN 206539696 U CN206539696 U CN 206539696U CN 201720185152 U CN201720185152 U CN 201720185152U CN 206539696 U CN206539696 U CN 206539696U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- pressure
- sealing ring
- ring
- sealing
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of sealing device for being used to change sealing ring tankful rate, including cylinder body and the sealing piston being arranged in cylinder body；The sealing piston is provided with seal groove with cylinder body contact surface；X-shaped sealing ring, back-up ring and some springs being arranged between groove side wall and back-up ring are provided with the seal groove；The back-up ring is contacted with the X-shaped sealing ring, and the end face center of the sealing piston corresponding with the cylinder body opening is provided with blind hole；The blind hole is connected with the seal groove by through hole；The through hole outlet is arranged between the back-up ring and the X-shaped sealing ring；The utility model, which is realized, to be changed tankful rate to adjust the sealing property between piston and cylinder body.
Description
Technical field
The utility model is related to a kind of sealing device for being used to change sealing ring tankful rate.
Background technology
Accumulator is the energy storage device commonly used in Hydrauservo System, mainly as the supplementary energy of system, while can be with
Reduce fluid pulsation.And wherein piston accumulator is widely applied with simple in construction, high reliability, but by
In the influence of sealing ring frictional resistance, cause bad dynamic performance, leak rate high.When hydraulic system does not work, it is desirable to which gases at high pressure are deposited
The storage long period is, it is necessary to improve Compress rate of sealing ring, tankful rate, but on the other hand, piston requires high response in motion, needs
Compress rate of sealing ring, tankful rate are reduced, with reducing friction resistance.Therefore a kind of sealing ring when piston is static is designed to compress
Rate, tankful rate are high, and Compress rate of sealing ring, the device of tankful rate are reduced when dynamic just realistic meaning very much.
Utility model content
In view of the above-mentioned problems, the utility model provide it is a kind of improve dynamic property be used for change the close of sealing ring tankful rate
Seal apparatus.
To reach above-mentioned purpose, a kind of sealing device for being used to change sealing ring tankful rate of the utility model, including one end
Cylinder body and the sealing piston being arranged in cylinder body provided with opening；
The sealing piston is provided with seal groove with cylinder body contact surface；Along cylinder body sealed end to openend in the seal groove
X-shaped sealing ring, back-up ring and some springs are disposed with axial direction；The former length of the spring is more than the groove side wall
With the spacing of back-up ring；
The end face center of the sealing piston corresponding with the cylinder body opening is provided with blind hole；The blind hole with it is described close
Sealing groove is connected by through hole；The through hole outlet is arranged between the back-up ring and the X-shaped sealing ring；
When the pressure in the cylinder body of openend is less than spring force, the back-up ring is promoted by the spring and axially squeezed
Press the X-shaped sealing ring；The axial extrusion of the X-shaped sealing ring, the friction between the sealing piston and the cylinder body
Power increases；
When the pressure in the cylinder body of openend is more than spring force, the back-up ring compression spring, the X-shaped sealing ring
Axial extrusion amount reduces, and the frictional force between the sealing piston and the cylinder body reduces.
Preferably, the X-shaped sealing ring is viton seal ring, the X-shaped sealing ring is X-type glue bowl and/or rotation lip
Shape sealing ring.
Preferably, being provided with scavenging air valve on the sealed end of the cylinder body；It is fixedly connected on the sealed end inwall of the cylinder body
There is buffer unit.
Preferably, the buffer unit include the flexible member that is fixedly connected with the inboard wall of cylinder block of one end and with the bullet
The buffer board that the property element other end is fixedly connected.
Preferably, being additionally provided with pressure-display device on the cylinder body, the pressure-display device includes and the buffering
Pressure sensor that plate is fixedly connected, the pressure display unit being fixedly connected with the outer wall of cylinder block and with the pressure display unit
The indicator lamp of electrical connection；The pressure sensor is connected with pressure display unit communication；
The pressure sensor is used to detect the pressure in the cylinder body and the pressure value detected is converted to electric signal
Pass to the pressure display unit；
When the pressure display unit receives the electric signal of pressure sensor transmission, the pressure display unit is by electricity
Signal is converted into data signal, while controlling the indicator lamp to be opened and closed；
If the pressure value that the pressure display unit is shown is more than predetermined value, the indicator lamp is opened；
If the pressure value that the pressure display unit is shown is less than predetermined value, the indicator lamp is closed.
The utility model is not when hydraulic system works, and the tankful rate of sealing ring is high, increases sealing effectiveness；In hydraulic system
During work, the tankful rate reduction of sealing ring, the purpose of reducing friction resistance improves dynamic property, faster improves supplement hydraulic pressure system
The speed of the system energy.
Brief description of the drawings
Fig. 1 is the overall schematic cross-sectional view of sealing device in the utility model embodiment 1；
Fig. 2 is accumulator application exemplary hydraulic schematic diagram in embodiment 2.
Embodiment
The utility model is further described with reference to Figure of description.
Embodiment 1
As shown in figure 1, a kind of sealing device for being used to change sealing ring tankful rate of the present embodiment, including one end are provided with opening
Cylinder body 1 and the sealing piston 2 that is arranged in cylinder body 1；
The sealing piston 2 is provided with seal groove with the contact surface of cylinder body 1；Along cylinder body sealed end to opening in the seal groove
End is disposed with X-shaped sealing ring 3, back-up ring 4 and some springs 5 on axial direction；The former length of the spring 5 is more than the sealing
Groove sidewall and the spacing of back-up ring 4；
The be open end face center of the corresponding sealing piston 2 of the cylinder body 1 is provided with blind hole；The blind hole with it is described
Seal groove is connected by through hole；The through hole outlet is arranged between the back-up ring 4 and the X-shaped sealing ring 3；
When the pressure in openend cylinder body 1 is less than 5 elastic force of spring, the back-up ring 4 is by the impeller-hub of spring 5
To the two ends of X-shaped sealing ring 3 are extruded, the special construction of the X-shaped sealing ring 3 makes the two ends of X-shaped sealing ring 3 close up deformation, made
Its tankful rate is uprised, the frictional force increase between the sealing piston 2 and the cylinder body 1；
When the pressure in openend cylinder body 1 is more than 5 elastic force of spring, the compression spring 5 of back-up ring 4, pressure extrusion
The whole end face of X-shaped sealing ring 3, the pressure at the two ends of X-shaped sealing ring 3 reduces, the two ends of X-shaped sealing ring 3 axially by
Deflection reduction is closed up in extruding, makes its tankful rate step-down, and the frictional force between the sealing piston 2 and the cylinder body 1 reduces, and carries
High dynamic performance.
The present embodiment changes the frictional force between sealing piston and cylinder body by changing the tankful rate of sealing ring, improves close
The dynamic property of seal apparatus.
Embodiment 2
As shown in Fig. 2 the present embodiment sealing device is by taking the accumulator in hydraulic system as an example, including one end and hydraulic system
Pump discharge and servo valve inlet passage cylinder body 1 and the sealing piston 2 that is arranged in the middle part of cylinder body；
The side of sealing piston 2 is provided with the fluid connected with hydraulic system, and opposite side is provided with gases at high pressure；It is described
Sealing piston 2 is provided with seal groove with the contact surface of cylinder body 1；In the seal groove along the sealed end of cylinder body 1 to openend axially on according to
It is secondary to be provided with X-shaped sealing ring 3, back-up ring 4 and some springs 5；The back-up ring 4 is slided with the cylinder body 1 and the seal groove and set
Put, the back-up ring 4 is contacted with the X-shaped sealing ring 3, the former length of the spring 5 is more than the groove side wall and back-up ring 4
Spacing；
The end face center that the sealing piston 2 is provided with fluid one end is provided with blind hole；It is provided with the blind hole and institute
State the aperture of seal groove connection；The small hole exits are arranged between the back-up ring 4 and the X-shaped sealing ring 3；
When hydraulic system does not work, back-up ring 4 is to the lateral movement of X-shaped sealing ring 3 under the promotion of spring 5, and back-up ring 4 is axially squeezed
The two ends of X-shaped sealing ring 3 are pressed, the two ends of X-shaped sealing ring 3, which are squeezed, closes up deformation, uprises its tankful rate, with cylinder body 1 and work
Plug 2 has more close contact, can reach raising sealing effectiveness；
When hydraulic work system, system builds pressure, and high-voltage oil liquid enters back-up ring 4 and X-shaped sealing ring from the aperture in piston 2
Between 3, the compression spring 5 of back-up ring 4 is promoted, back-up ring 4 is separated with X-shaped sealing ring 3, and the whole end face of X-shaped sealing ring 3 is squeezed, X-type
The part that the two ends of sealing ring 3 are compressed axially is released, and reduces its tankful rate, the friction of motion drag reduction of sealing piston 2,
Dynamic property can be improved, the speed of supplement hydraulic pressure system energy can be faster improved.
The present embodiment is not when hydraulic system works, and the tankful rate of sealing ring is high, increases sealing effectiveness；In hydraulic system work
When making, the tankful rate reduction of sealing ring, reducing friction resistance improves dynamic property, faster improves supplement hydraulic pressure system energy
Speed.
Embodiment 3
Based on above-described embodiment, X-shaped sealing ring 3 described in the present embodiment is viton seal ring, and the X-shaped sealing ring 3 is X
Type glue bowl and/or rotating lip-type sealing ring；
The present embodiment fluorubber has prominent heat-resisting, oil resistance, glue bowl and rotating lip-type sealing ring, can significantly carry
High use time.
Embodiment 4
Based on above-described embodiment, scavenging air valve is provided with the sealed end of cylinder body 1 described in the present embodiment；The cylinder body 1 it is close
Buffer unit is fixedly connected with end-blocking inwall；The buffer unit includes the bullet that one end is fixedly connected with the inwall of cylinder body 1
Property element and the buffer board being fixedly connected with the flexible member other end；
Pressure-display device is additionally provided with the cylinder body 1, the pressure-display device includes fixing with the buffer board
The pressure sensor of connection, the pressure display unit being fixedly connected with the outer wall of cylinder body 1 and it is electrically connected with the pressure display unit
The indicator lamp connect；The pressure sensor is connected with pressure display unit communication；
The pressure sensor is used to detect the pressure in the cylinder body 1 and the pressure value detected is converted to electric signal
Pass to the pressure display unit；
When the pressure display unit receives the electric signal of pressure sensor transmission, the pressure display unit is by electricity
Signal is converted into data signal, while controlling the indicator lamp to be opened and closed；
If the pressure value that the pressure display unit is shown is more than predetermined value, the indicator lamp is opened；
If the pressure value that the pressure display unit is shown is less than predetermined value, the indicator lamp is closed.
The present embodiment changes gaseous species in cylinder body by setting scavenging air valve, while be provided with buffer unit, prevent because
Pressure crosses senior general's piston press to cylinder ends, while being additionally provided with the pressure that pressure-display device can be checked in cylinder body at any time
Value, while can be pointed out when the pressure value in cylinder body is excessive by indicator lamp, prevents cylinder interior pressure excessive and system is caused to damage
Evil.
The principle that the utility model is used：Due to the special construction of X-shaped sealing ring 3, spring 5 promotes the extruding X-type of back-up ring 4 close
During seal 3 four end points of X-type be squeezed respectively and close up deformation make the length of X-shaped sealing ring 3 increase so that increase with
Tankful rate between cylinder body 1, strengthens sealing；When the pressure in cylinder body 1 is more than the elastic force of spring 5, fluid enters sealing
In groove, back-up ring 4 is separated with X-shaped sealing ring 3, simultaneously because the pressure of fluid averagely disperses extruding, the pressure at the two ends of X-shaped sealing ring 3
Power diminishes, and 3 four end points of X-shaped sealing ring close up deflection reduction, the tankful rate step-down of X-shaped sealing ring 3, X-shaped sealing ring 3 and cylinder
Frictional force between body 1 diminishes, and improves the dynamic property of piston.The cross part of X-shaped sealing ring 3 is provided with connection four chambers of X-type
Then above-mentioned principle effect is more efficient for the cross through hole of room.
More than, preferred embodiment only of the present utility model, but protection domain of the present utility model is not limited thereto, and appoints
What those familiar with the art the change that can readily occur in or replaces in the technical scope that the utility model is disclosed
Change, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim
The protection domain defined is defined.
Claims (5)
1. a kind of sealing device for being used to change sealing ring tankful rate, it is characterised in that：Including one end provided with opening cylinder body and
It is arranged on the sealing piston in cylinder body；
The sealing piston is provided with seal groove with cylinder body contact surface；It is axial along cylinder body sealed end to openend in the seal groove
On be disposed with X-shaped sealing ring, back-up ring and some springs；The former length of the spring is more than the groove side wall and gear
The spacing of circle；
The end face center of the sealing piston corresponding with the cylinder body opening is provided with blind hole；The blind hole and the seal groove
Connected by through hole；The through hole outlet is arranged between the back-up ring and the X-shaped sealing ring；
When the pressure in the cylinder body of openend is less than spring force, the back-up ring is promoted axial compression institute by the spring
State X-shaped sealing ring；The axial extrusion of the X-shaped sealing ring, the frictional force between the sealing piston and the cylinder body increases
Greatly；
When the pressure in the cylinder body of openend is more than spring force, the back-up ring compression spring, the X-shaped sealing ring axial direction
Extrusion amount reduces, and the frictional force between the sealing piston and the cylinder body reduces.
2. a kind of sealing device for being used to change sealing ring tankful rate as claimed in claim 1, it is characterised in that：The X-type is close
Seal is viton seal ring, and the X-shaped sealing ring is X-type glue bowl and/or rotating lip-type sealing ring.
3. a kind of sealing device for being used to change sealing ring tankful rate as claimed in claim 1, it is characterised in that：The cylinder body
Scavenging air valve is provided with sealed end；Buffer unit is fixedly connected with the sealed end inwall of the cylinder body.
4. a kind of sealing device for being used to change sealing ring tankful rate as claimed in claim 3, it is characterised in that：The buffering dress
Put the flexible member being fixedly connected including one end with the inboard wall of cylinder block and be fixedly connected with the flexible member other end it is slow
Punching.
5. a kind of sealing device for being used to change sealing ring tankful rate as claimed in claim 4, it is characterised in that：On the cylinder body
Be additionally provided with pressure-display device, pressure sensor that the pressure-display device includes being fixedly connected with the buffer board, with
Pressure display unit that the outer wall of cylinder block is fixedly connected and the indicator lamp electrically connected with the pressure display unit；The pressure is passed
Sensor is connected with pressure display unit communication；
The pressure sensor is used to detect the pressure in the cylinder body and the pressure value detected is converted to electric signal transmission
To the pressure display unit；
When the pressure display unit receives the electric signal of pressure sensor transmission, the pressure display unit is by electric signal
Data signal is converted into, while controlling the indicator lamp to be opened and closed；
If the pressure value that the pressure display unit is shown is more than predetermined value, the indicator lamp is opened；
If the pressure value that the pressure display unit is shown is less than predetermined value, the indicator lamp is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720185152.2U CN206539696U (en) | 2017-02-28 | 2017-02-28 | Sealing device for changing sealing ring tankful rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720185152.2U CN206539696U (en) | 2017-02-28 | 2017-02-28 | Sealing device for changing sealing ring tankful rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206539696U true CN206539696U (en) | 2017-10-03 |
Family
ID=59946288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720185152.2U Withdrawn - After Issue CN206539696U (en) | 2017-02-28 | 2017-02-28 | Sealing device for changing sealing ring tankful rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206539696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704586A (en) * | 2017-02-28 | 2017-05-24 | 中冶华天南京工程技术有限公司 | Sealing device for changing groove filling rate of sealing ring |
-
2017
- 2017-02-28 CN CN201720185152.2U patent/CN206539696U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704586A (en) * | 2017-02-28 | 2017-05-24 | 中冶华天南京工程技术有限公司 | Sealing device for changing groove filling rate of sealing ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206708470U (en) | Can pressure release type check valve apparatus | |
| CN106704586B (en) | For changing the sealing device of sealing ring tankful rate | |
| CN206539696U (en) | Sealing device for changing sealing ring tankful rate | |
| JP2013531154A5 (en) | ||
| CN106523569B (en) | Oil gas shock mitigation system | |
| CN207161712U (en) | A kind of novel piston rod double-channel sealing structure | |
| CN108533758B (en) | It is a kind of can inflation/deflation double-layer sealing structure and gas spring | |
| CN215891130U (en) | Self-adjusting single-seat adjusting valve | |
| CN110185801A (en) | Special-shaped mesolow sealing ring | |
| CN104405692A (en) | Explosion-proof piston energy accumulator | |
| CN108679225A (en) | A kind of oil enveloping structure of motor | |
| CN205401879U (en) | Rotation type variable frequency switching valve | |
| CN207316095U (en) | High temperature and pressure three eccentric metal sealed butterfly valve | |
| CN108167263B (en) | A kind of adjustable movable sealing structure of decrement | |
| CN206889562U (en) | A kind of new buffer for being easy to processing | |
| CN207304407U (en) | A kind of fluid pressure type piezo-electric generating monomer and parallel piezoelectric power generation system | |
| CN106439085B (en) | Valve with oil film seal structure | |
| CN206330332U (en) | A kind of air conditioning for automobiles small reservoir | |
| CN206907710U (en) | A kind of pressure switch | |
| CN110486407A (en) | A kind of Effects of Viscous Fluid Damper of anti-slip leakage | |
| CN203363400U (en) | Axial sealing device | |
| CN107654673A (en) | HTHP three eccentric metal sealed butterfly valve | |
| CN215861875U (en) | Check valve | |
| CN208311567U (en) | A kind of throttling spool formula check valve | |
| CN208221679U (en) | A kind of inner wall throttle type check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171003 Effective date of abandoning: 20180410 |