CN212003815U - Hydraulic pressure auxiliary type sealing structure - Google Patents
Hydraulic pressure auxiliary type sealing structure Download PDFInfo
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- CN212003815U CN212003815U CN202020251605.9U CN202020251605U CN212003815U CN 212003815 U CN212003815 U CN 212003815U CN 202020251605 U CN202020251605 U CN 202020251605U CN 212003815 U CN212003815 U CN 212003815U
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- oil cylinder
- stop block
- auxiliary oil
- pressure
- auxiliary
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a hydraulic pressure auxiliary type seal structure, including sealed dog, sealed dog one side receives the operating pressure who comes from the system, its characterized in that: the other side of the sealing stop block is connected with one end of the connecting block through a bolt, the diameter of the connecting block is smaller than that of the sealing stop block, the other end of the connecting block is connected with a piston rod of an auxiliary oil cylinder through threads, the outer diameter of the sealing stop block is larger than that of the auxiliary oil cylinder, the diameter of the piston rod of the auxiliary oil cylinder is smaller than that of the connecting block, and the auxiliary oil cylinder and the sealing stop block are coaxial.
Description
Technical Field
The utility model relates to a sealed technical field especially relates to a hydraulic pressure auxiliary type seal structure.
Background
Newtonian liquid has compressibility, good fluidity and flexibility, is a very good force transmission medium, and is widely applied to mechanical transmission and metal forming, but when the liquid is used as the force transmission medium, the sealing property of a space where the liquid is located has higher requirements, because according to the Pascal principle, once a little slight leakage occurs in a hydraulic system, the pressure in the system is the same as atmospheric pressure, and the force transmission effect cannot be achieved, so that the sealing structure is a core technology in liquid force transmission.
In common hydraulic system occasions, such as a press machine, an excavator and the like, the pressure intensity of the hydraulic system is usually 0-30 MPa, and the sealing can be realized by using a common combined sealing ring structure under the condition that the pressure intensity is not high, such as CN 201711038013.8. In an internal high-pressure metal forming system, the yield stress required by metal forming can reach 200-300 MPa generally, and under the condition, sealing is difficult to realize by using a traditional combined sealing ring, so that a sealing mode of using an external force pull rod to match with a baffle plate is available, deformation of a sealing ring of a pressurization system under high pressure can be effectively reduced, and the sealing effect of the system is improved.
However, the utility model discloses a utility model people discover in research and actual production: even if the structure of dog and pull rod has been used, when system pressure approached the yield strength of dog (≧ 240MPa), little deformation still can take place in dog centre of a circle department to lead to the sealing member among the turbocharging system to suffer destruction, lose sealed effect, long the time the dog still takes place to break easily.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a hydraulic pressure auxiliary type seal structure for solve the not enough of prior art.
In order to solve the above problems, the technical solution of the present invention is:
the utility model provides a hydraulic pressure auxiliary type seal structure, includes sealed dog, sealed dog one side is received the operating pressure who comes from the system, the opposite side of sealed dog pass through the bolt and be connected with the one end of connecting block, the connecting block diameter is less than the diameter of sealed dog, the other end of connecting block is connected with an auxiliary cylinder's piston rod through the screw thread, the external diameter of sealed dog is greater than auxiliary cylinder's external diameter, auxiliary cylinder's piston rod's diameter is less than the external diameter of connecting block, auxiliary cylinder and sealed dog are coaxial.
The working pressure is connected with the electromagnetic directional valve, the electromagnetic directional valve is connected with the auxiliary oil cylinder, and the working pressure is also connected with a pressure sensor.
The electromagnetic directional valve is a two-position two-way electromagnetic valve, the auxiliary oil cylinder is a plunger cylinder, an oil inlet of the electromagnetic directional valve is connected with working pressure, and an oil outlet of the electromagnetic directional valve is connected with the auxiliary oil cylinder.
The sealing stop block is made of a metal material.
The utility model has the advantages that: the utility model discloses a utility model people provides a have supplementary seal structure of hydraulic pressure force, can accomplish to restrict the deformation of dog effectively in the condition of superhigh pressure, improves sealed effect, and then improves the hydraulic pressure force that turbocharging system can provide, takes shape the product of more various materials.
Drawings
Fig. 1 is a system schematic diagram of the structure provided by the utility model:
fig. 2 is the stress diagram of the structure provided by the utility model:
fig. 3 is a schematic cross-sectional view of the structure provided by the present invention:
in the figure: 1-sealing stop block, 2-pressure sensor, 3-electromagnetic directional valve, 4-auxiliary oil cylinder, 5-working pressure, 6-connecting block and 41-piston rod.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
Referring to the attached drawings 1-3, the utility model discloses a sealed dog 1, sealed dog 1 one side is received and is come from the operating pressure 5 of system, the opposite side of sealed dog 1 pass through the bolt and be connected with the one end of connecting block 6, the connecting block diameter is less than the diameter of sealed dog 1, the other end of connecting block 6 is connected with the piston rod 41 of a service cylinder 4 through the screw thread, the external diameter of sealed dog 1 is greater than the external diameter of service cylinder 4, the diameter of the piston rod 41 of service cylinder 4 is less than the external diameter of connecting block 6, service cylinder 4 is with the axle center with sealed dog 1.
The working pressure 5 is connected with the electromagnetic directional valve 3, the electromagnetic directional valve 3 is connected with the auxiliary oil cylinder 4, and the working pressure 5 is also connected with the pressure sensor 2.
The electromagnetic directional valve 3 is a two-position two-way electromagnetic valve, the auxiliary oil cylinder 4 is a plunger cylinder, an oil inlet of the electromagnetic directional valve 3 is connected with the working pressure 5, and an oil outlet of the electromagnetic directional valve is connected with the auxiliary oil cylinder 4.
The sealing stop block 1 is made of a metal material.
In practical application, in order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined to clearly and completely describe the technical solutions in the examples of the present invention.
The diameter of a piston rod 41 of the auxiliary oil cylinder 4 is smaller than the outer diameter of the connecting block 6, the auxiliary oil cylinder 4 and the sealing stop block 1 are coaxial, and hydraulic pressure acts on the circular center of the sealing stop block 1, so that the axis of the sealing stop block 1 cannot deform along with the increase of pressure provided by the piston rod 41.
The sealing stop block 1 is made of metal materials and can provide high yield strength.
The pressure sensor 2 can detect the working pressure 5 in the system, and adjust the acting force of the auxiliary oil cylinder 4 according to the deformation prediction of the sealing stop block 1, so that the effect of saving energy is achieved, and the sealing stop block 1 can be limited from yielding deformation.
The utility model discloses use hydraulic pressure force as the supplementary external force of this mechanism, because the turbocharging system also is hydraulic system, make things convenient for the transformation of former system and supplementary hydraulic pressure force's control, external force is provided by auxiliary cylinder 4, bolted connection simple to use between sealed dog 1 and the connecting block 2, only play basic fixed action, use threaded connection between piston rod 41 and the connecting block 2, the diameter of connecting block 2 can be confirmed according to the diameter and the material of sealed dog 1, this external force auxiliary system's commonality has been guaranteed, auxiliary cylinder 4 adopts ultrashort stroke single-action pneumatic cylinder design, because this external force only needs to play the supporting role, the space of sealing mechanism can be saved in the design like this, and reduce the control degree of difficulty, save the cost.
When the system works, the pressure sensor 2 detects the working pressure 5 applied to the sealing stop block 1, when a pressurization system providing the working pressure 5 reaches a preset dangerous pressure value, the pressure sensor 2 sends a signal to push the electromagnetic directional valve 3 to move rightwards, the auxiliary oil cylinder 4 receives the working pressure 5 of the system and generates thrust on the auxiliary oil cylinder 4, the design can enable the auxiliary oil cylinder 4 and the pressurization system providing the working pressure 5 to be synchronous, and when the pressurization system finishes acting to release pressure, the auxiliary oil cylinder 4 releases pressure.
In order to overcome the problem that current seal structure exerts force not enough to the core, the utility model discloses a people provides one kind and has supplementary seal structure of hydraulic pressure force, can accomplish to restrict sealed dog 1's deformation effectively in the condition of superhigh pressure, improves sealed effect, and then improves the operating pressure 5 that turbocharging system can provide, can form the product of more kinds of materials.
The above-mentioned specific implementation is the preferred embodiment of the present invention, can not be right the utility model discloses the limit, any other does not deviate from the technical scheme of the utility model and the change or other equivalent replacement modes of doing all contain within the scope of protection of the utility model.
Claims (4)
1. A hydraulic pressure auxiliary type seal structure comprises a seal stop block, wherein one side of the seal stop block receives working pressure from a system, and the hydraulic pressure auxiliary type seal structure is characterized in that: the other side of the sealing stop block is connected with one end of the connecting block through a bolt, the diameter of the connecting block is smaller than that of the sealing stop block, the other end of the connecting block is connected with a piston rod of an auxiliary oil cylinder through threads, the outer diameter of the sealing stop block is larger than that of the auxiliary oil cylinder, the diameter of the piston rod of the auxiliary oil cylinder is smaller than that of the connecting block, and the auxiliary oil cylinder and the sealing stop block are coaxial.
2. The hydraulic force assisted seal structure of claim 1, wherein: the working pressure is connected with the electromagnetic directional valve, the electromagnetic directional valve is connected with the auxiliary oil cylinder, and the working pressure is also connected with a pressure sensor.
3. The hydraulic force assisted seal structure of claim 2, wherein: the electromagnetic directional valve is a two-position two-way electromagnetic valve, the auxiliary oil cylinder is a plunger cylinder, an oil inlet of the electromagnetic directional valve is connected with working pressure, and an oil outlet of the electromagnetic directional valve is connected with the auxiliary oil cylinder.
4. The hydraulic force assisted seal structure of claim 1, wherein: the sealing stop block is made of a metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020251605.9U CN212003815U (en) | 2020-03-04 | 2020-03-04 | Hydraulic pressure auxiliary type sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020251605.9U CN212003815U (en) | 2020-03-04 | 2020-03-04 | Hydraulic pressure auxiliary type sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003815U true CN212003815U (en) | 2020-11-24 |
Family
ID=73424199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020251605.9U Active CN212003815U (en) | 2020-03-04 | 2020-03-04 | Hydraulic pressure auxiliary type sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003815U (en) |
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2020
- 2020-03-04 CN CN202020251605.9U patent/CN212003815U/en active Active
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