CN1020164C - Automatic sealing device for sealing pressure fluid at orifice by friction - Google Patents
Automatic sealing device for sealing pressure fluid at orifice by friction Download PDFInfo
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- CN1020164C CN1020164C CN 89105214 CN89105214A CN1020164C CN 1020164 C CN1020164 C CN 1020164C CN 89105214 CN89105214 CN 89105214 CN 89105214 A CN89105214 A CN 89105214A CN 1020164 C CN1020164 C CN 1020164C
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- sealing
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Abstract
The present invention relates to a sealing device for sealing pressure fluid by friction, which can be used for unsealing circular orifices or regular polygonal orifices easily, especially to a rock hole sealing device of equipment for cleaving rocks by fluid high static pressure and a sealing device for geological mine entrances. The existing thread sealing and pressing mechanisms utilize pretightening force generated by manually screwing threads to seal the orifices, which has the shortcomings of high labor intensity, low work efficiency and poor sealing reliability. The present invention relates to an automatic action device which uses fluid pressure to automatically and tightly lock and seal and automatically regulate sealing friction according to the fluid pressure in sealed holes; the device not only can seal the pressure fluid input in the holes through the sealing device, but also can seal the pressure fluid in the holes; the device can safely seal 50 megapascals of pressure fluid, and has the advantages of convenient operation and easy loading and unloading.
Description
The present invention relates to circle and regular polygon aperture, so that the mode of unpacking utilizes frictional force to seal up the seal arrangement of hole internal pressure fluid, particularly with the petrosal foramen seal arrangement of fluid high static pressure splitting rock equipment and the sealing of geology well head.
(number of patent application is: 86209430) development comes by Northeast Polytechnic College development " screw thread pressing machine structure " in the present invention.
In the known aperture high pressure seal structure of being convenient to break seal, adopt thread seal more.This structure is only applicable to the sealing of the circular port on the material of machining screw easily, to the hole on some natural materials, such as the shape common rock drilling hole of rule not too on the rock, seal up hole internal pressure fluid, just must adopt " friction sealed method ".The petrosal foramen diameter that ordinary rock drill is finished is 40 to 43 millimeters, utilization directly acts on the fluid high static pressure splitting large rock mass in the sealing petrosal foramen in a row, working pressure needs 10 to 50 MPas, and existing seal arrangement has only " the screw thread pressing machine structure " of Northeast Polytechnic College development a kind of.This mechanism utilizes and manually screws the pretightening force realization sealing that screw thread produces.This " screw thread pressing machine structure " though can seal up the pressure fluid of 40 MPas, sealing is to realize that by manually screwing screw thread labor intensity is big fully, inefficiency, and sealing reliability is relatively poor.
Task of the present invention is: design a kind of auto-action device, can seal by auto lock when time in the hole that pressure fluid seals by the seal arrangement input, and can regulate seal friction power automatically according to the hole fluid pressure.This installs through evidence: sealing is reliable, and is easy to operate, and loading and unloading can seal up the pressure fluid of 50 MPas easily safely.
Technological scheme of the present invention is: be used for the aperture so that the mode of unpacking utilizes frictional force to seal up hole internal pressure fluid, particularly, the screw threads for fastening sealing mechanism is changed into the piston (5) that can utilize the hydrodynamic pressure auto-action with the petrosal foramen seal arrangement of fluid high static pressure splitting rock equipment.Cylinder body (4) double-action mechanism utilizes fluid transmission and hydrodynamic pressure to be communicated with principle and realizes the auto lock sealing, and can regulate seal friction power automatically according to closed hole (19) fluid pressure.Side of cylinder block has import (7), through hole (11) is arranged on the piston rod (12), this through-hole diameter is less than the inlet diameter on the cylinder body, and certain distance is arranged apart from piston, there is the shaft shoulder (14) to contact on the piston rod with cone (15) microcephaly's end face, on piston and the cylinder body cooperation place piston seal groove (6) is arranged, seal ring is arranged in the groove.At piston and cylinder body matching part and have between the piston rod of through hole and a diameter is arranged less than piston external diameter, piston shoulder (9) greater than diameter of piston rod, seal groove (10) is arranged on the cylinder body of cylinder body and piston rod cooperation place, seal ring is arranged in the groove, on piston, screw rod (1) is arranged with the corresponding the other end of piston rod, this screw rod and piston and piston rod are on same shaft axis, and become one, the length of screw rod makes piston when position, the most close hole (7), screw rod can stretch out (3) at least 7 pitch of cylinder cap, in the part of stretching out cylinder cap nut (2) is arranged.
After pressure fluid is in import (7) enters piston cavity (8), piston action, and drive cone (15) motion by nut (18) packing ring (17) and cushion rubber (16) and make tapered sleeve (13) expansion, be pressed on the hole wall after the tapered sleeve expansion, cushion rubber pressurized expansion simultaneously, with hole (19) sealing, realize the purpose of auto lock sealing.When piston moves to through hole (11) and import (7) when being communicated with, fluid enters in the hole (19) of sealing by through hole from piston cavity.After hole (19) is full of fluid, under the fluid pressure input effect, this hole internal pressure improves rapidly, and the hole internal pressure acts on the piston by through hole (11), thereby the pressure that tapered sleeve is born is directly proportional with the closed hole internal pressure, and realization seal friction power is regulated voluntarily with sealing load.
Be this mechanism enters hole (19) from import (7) from motive sealing pressure fluid above, after import (7) blocked, turn nut (2) makes through hole on the piston rod (11) be communicated with piston cavity (8), the pressure fluid of the salable interior generation in firmly hole (19) of this device at this moment, and can regulate seal friction power voluntarily.
Screw rod (1) in the time of need unloading lower sealing device, knocks with hand hammer gently in this mechanism after finishing seal operation, making cone break away from tapered sleeve can take out seal arrangement easily from the hole.
The present invention can realize the auto lock sealing, and can regulate seal friction power automatically according to sealing load, when needs unload lower sealing device, can directly knock screw rod (1) easily with its taking-up.Compare with existing " screw thread pressing machine structure ", have following advantage:
1. utilize hydrodynamic pressure from motive sealing, realize the sealing automation.
2. can regulate seal friction power voluntarily, sealing is reliable.
3. easy to operate, loading and unloading easily.
Accompanying drawing has been described structure of the present invention and principle.
Description of drawings:
1. screw rod 2. nuts 3. cylinder caps 4. cylinder bodies 5. pistons 6. seal grooves 7. imports 8. piston cavity 9. pistons are takeed on 10. seal grooves, 11. through holes, 12. piston rods, 13. tapered sleeves, 14. shaft shoulders, 15. cones, 16. cushion rubbers, 17. packing rings, 18. nuts, 19. holes
Claims (5)
1, a kind of automatic sealing device that is used for the aperture with the frictional force sealing pressure fluid, it is characterized in that this device is by cylinder body (4), piston (5), piston cavity (8), piston rod (12), tapered sleeve (13), cone (15), the shaft shoulder (14), import (7), through hole (11), seal groove (6), the automatic sealing mechanism that cushion rubber (16) is formed.
2,, it is characterized in that seal groove (6) is arranged on the described piston (5) according to the described automatic sealing device that is used for the aperture with the frictional force sealing pressure fluid of claim 1.
3, according to the described automatic sealing device that is used for the aperture with the frictional force sealing pressure fluid of claim 1, it is characterized in that import (7) is arranged on the cylinder body (4), can be pressure fluid input piston chamber (8) and by through hole (11) hand-hole (19).
4, according to the described automatic sealing device that is used for the aperture with the frictional force sealing pressure fluid of claim 1, it is characterized in that piston rod (12) upward porose (11), when being used for (11) and (7) connection pressure fluid is imported in the closed hole (19).
5,, it is characterized in that having on the piston rod (12) cone (15) to make tapered sleeve (13) expansion realize friction sealed according to the described automatic sealing device that is used for the aperture with the frictional force sealing pressure fluid of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105214 CN1020164C (en) | 1989-01-18 | 1989-01-18 | Automatic sealing device for sealing pressure fluid at orifice by friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105214 CN1020164C (en) | 1989-01-18 | 1989-01-18 | Automatic sealing device for sealing pressure fluid at orifice by friction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1036818A CN1036818A (en) | 1989-11-01 |
| CN1020164C true CN1020164C (en) | 1993-03-24 |
Family
ID=4855982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105214 Expired - Fee Related CN1020164C (en) | 1989-01-18 | 1989-01-18 | Automatic sealing device for sealing pressure fluid at orifice by friction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020164C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116960405B (en) * | 2023-09-20 | 2023-12-12 | 爱德曼氢能源装备有限公司 | Integrated intercooler of hydrogen fuel cell system |
-
1989
- 1989-01-18 CN CN 89105214 patent/CN1020164C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036818A (en) | 1989-11-01 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |