CN2158930Y - Dynamic sealing compensation piston - Google Patents
Dynamic sealing compensation piston Download PDFInfo
- Publication number
- CN2158930Y CN2158930Y CN 93209499 CN93209499U CN2158930Y CN 2158930 Y CN2158930 Y CN 2158930Y CN 93209499 CN93209499 CN 93209499 CN 93209499 U CN93209499 U CN 93209499U CN 2158930 Y CN2158930 Y CN 2158930Y
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- piston
- mud
- utility
- 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.)
- Expired - Fee Related
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a dynamic sealing compensation piston device in a one-protected and one-sealed type, which is a sealing device for a mud pump of the reciprocal motion. The utility model can solve the leakage problems that mud sand can be carried to the abrasion between a sealing ring and a cylinder wall in the course of the reciprocating motion of mud pumps with various specifications, the assembly reduction is not easy to master, and the mechanical performance falls. Because the sealing device has the structure that a clamping ring can be adjusted, a compensating passage is arranged on a piston and a locating mud separated ring, a U-shaped compensating cavity is arranged on the sealing ring, the left side of the sealing ring is provided with an anti-extrusion ring, and the right side is provided with a supporting protecting ring, the one-protected and the one-sealed sealing purposes can be achieved.
Description
What the utility model was related is that a kind of one of various to-and-fro motion specifications of oil field well-digging slurry pump that are used for are protected an envelope formula motive sealing piston apparatus.
At present, the dynamic pressure sealing that slurry pump adopts is a solid rubber, so because its geometrical shape is in the high speed to-and-fro motion, mud sand is brought into seal ring easily, and accelerated wear test between the casing wall, and the cushion rubber precompressed amount of former assembly structure is difficult for grasping, it is little when time thes be big, make the seal ring excessive wear, poor, the leakage of stability of motions, a common seal ring is no more than 100 hours service time, under the situation about use for a long time at slurry pump, mechanical property descending, also leak easily.Seal ring solution with existing form is that certain difficulty is arranged.
The purpose of this utility model is to provide a kind of adaptability strong, and long service life can improve stability of motions, make simply, and the novel seal compensation device of good seal performance, purpose is to solve slurry pump reciprocating movement sealing leakage problem.
The structure of the utility model device is achieved in that seal arrangement constitutes mainly by piston (4), anti-extrusion ring (6), positioning slurry separated ring (7), U type compensating ring (8), an overfill protection trim ring (9), adjusts trim ring (10) and form; wherein: U type compensating ring (8) end face right side has one to support guard circle (9); adjusting on trim ring (10), piston, the positioning slurry separated ring (7) has compensation channel (13), and there is anti-extrusion ring (6) other end of U type compensating ring (8).Pressure mud in the slurry pump; enter in the U type compensated cavity of seal ring through adjustment trim ring (10), piston (4), positioning slurry separated ring (7), compensation slurry channel; its compensating ring is close on the inboard wall of cylinder block; pressure mud acts on and supports on guard circle (9) one end faces simultaneously, thereby has reached the purpose of a guarantor one envelope.
This sealing can make the friction steady decrease, behind the rubber sealing surface wear, utilizes the pressure of mud, can self-service compensation sealing performance and life-span of Sealing, and stability of motions is greatly improved.
Fig. 1 is a structural representation of the present utility model.(1) cylinder body among the figure; (2) piston rod; (3) square ring; (4) piston; (5) guide ring; (6) anti-extrusion ring; (7) positioning slurry separated ring; (8) U type compensating ring; (9) prop up the overfill protection trim ring; (10) adjust trim ring; (11) gland nut; (12) compensated cavity; (13) compensation channel.
Following structure accompanying drawing is described further.
Guard circle (9) is supported in one of U type compensating ring (8) end face right side design, is to be used for realizing that seal arrangement prevents that in to-and-fro motion large particle silt enters the sealing surface position slightly.Adjustment trim ring (10), piston (4), positioning slurry separated ring have compensation channel on (7), and positioning slurry separated ring (7) is the stability that is used for improving seal ring pressure.It is to prevent that U type compensating ring (8) from crushing injury in to-and-fro motion that the other end design of U type compensating ring (8) has anti-extrusion ring (6), purpose.
Claims (1)
- A kind of one protects an envelope formula motive sealing compensating piston device; form by piston (4), anti-extrusion ring (6), positioning slurry separated ring (7), U type compensating ring (8), an overfill protection trim ring (9), adjustment trim ring (10); it is characterized in that: U type compensating ring (8) end face right side has one to support guard circle (9); adjusting on trim ring (10), piston (4), the positioning slurry separated ring (7) has compensation channel (13), and there is anti-extrusion ring (6) other end of U type compensating ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209499 CN2158930Y (en) | 1993-04-16 | 1993-04-16 | Dynamic sealing compensation piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209499 CN2158930Y (en) | 1993-04-16 | 1993-04-16 | Dynamic sealing compensation piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158930Y true CN2158930Y (en) | 1994-03-16 |
Family
ID=33791676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93209499 Expired - Fee Related CN2158930Y (en) | 1993-04-16 | 1993-04-16 | Dynamic sealing compensation piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158930Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536790A (en) * | 2012-02-08 | 2012-07-04 | 三一重工股份有限公司 | Concrete-piston structure, pumping system and concrete pump |
| CN102606473A (en) * | 2012-04-01 | 2012-07-25 | 三一重工股份有限公司 | Adaptive concrete piston and concrete conveying device |
| CN104863710A (en) * | 2015-04-20 | 2015-08-26 | 华国洋 | Assembled bi-directional engine |
| CN107401575A (en) * | 2017-08-28 | 2017-11-28 | 贵州龙飞气弹簧有限责任公司 | A kind of air spring piston |
-
1993
- 1993-04-16 CN CN 93209499 patent/CN2158930Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536790A (en) * | 2012-02-08 | 2012-07-04 | 三一重工股份有限公司 | Concrete-piston structure, pumping system and concrete pump |
| CN102536790B (en) * | 2012-02-08 | 2015-04-01 | 三一汽车制造有限公司 | Concrete-piston structure, pumping system and concrete pump |
| CN102606473A (en) * | 2012-04-01 | 2012-07-25 | 三一重工股份有限公司 | Adaptive concrete piston and concrete conveying device |
| CN102606473B (en) * | 2012-04-01 | 2015-07-01 | 三一重工股份有限公司 | Adaptive concrete piston and concrete conveying device |
| CN104863710A (en) * | 2015-04-20 | 2015-08-26 | 华国洋 | Assembled bi-directional engine |
| CN107401575A (en) * | 2017-08-28 | 2017-11-28 | 贵州龙飞气弹簧有限责任公司 | A kind of air spring piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |