CN2578561Y - Self-sealing piston - Google Patents
Self-sealing piston Download PDFInfo
- Publication number
- CN2578561Y CN2578561Y CN 02285618 CN02285618U CN2578561Y CN 2578561 Y CN2578561 Y CN 2578561Y CN 02285618 CN02285618 CN 02285618 CN 02285618 U CN02285618 U CN 02285618U CN 2578561 Y CN2578561 Y CN 2578561Y
- Authority
- CN
- China
- Prior art keywords
- piston
- rubber ring
- self
- utility
- 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.)
- Expired - Fee Related
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a self-sealing piston used on a mud pump. The utility model solves the problems of a sealing surface of a piston having no compensation and short service life. The utility model is characterized in that a valve core (1) is tightly attached to the inner wall of a rubber ring (2) by an elastic press plate (3) after sheathed with the bowl-shaped rubber ring (2). The sealing surface of the piston having little abrasion loss can be compensated, and thus the service life of the piston is prolonged.
Description
Technical field:
The utility model relates to the piston of the used slurry pump of oil drilling, belongs to self-sealing piston.
Background technique:
The slurry pump that oil drilling is used, be in steel bushing, to move reciprocatingly by the piston in the slurry pump, realize mud is sucked and pumps, piston is the critical piece of slurry pump, the piston that uses is with the fixing whole rubber ring of pressing plate on steel core now, by forming sealing surface between whole rubber ring and the steel bushing, reach the purpose of sealing.Because piston is constantly reciprocating in the steel bushing of slurry pump, like this, sealing surface on the piston just will be worn, and wear extent is bigger, and the sealing face does not have compensation ability, when the sealing surface wear reaches capacity, will be subjected to the impact of high-pressure slurry, whole rubber ring just will damage, and make the working life of piston short, and the dismounting difficulty is big, thereby incurs loss through delay wellbore construction.
Summary of the invention:
Do not have the deficiency of compensation ability in order to overcome the sealing surface that has now on the mud piston, the utility model provides a kind of self-sealing piston, and this piston can compensate sealing surface wear, prolongs the working life of piston.
The technological scheme that its technical problem that solves the utility model adopts is: valve core upper sleeve is close to the rubber ring inwall by spring bearer plate after the bowl-type rubber ring is arranged.
Above-mentioned said pressing plate is close to the rubber ring inwall by gland nut, and the material of rubber ring is an abrasion resistant polyurethane.
The beneficial effects of the utility model are: owing to be with bowl-type abrasion resistant polyurethane rubber ring on this self-sealing piston, and fix by gland nut with spring bearer plate, so when piston moved reciprocatingly in steel bushing, the wear extent of piston seal face was little; The sealing surface of piston can make it to expand by the pressure of suction and ejection mud itself, comes compensating sealing surface, thereby, the working life of prolongation piston.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is that structure of the present utility model is partly cutd open figure.
1-spool among the figure, 2-rubber ring, 3-spring bearer plate, 4-gland nut.
Embodiment:
In Fig. 1, this self-sealing piston comprises spool 1, and spool 1 is entangled by rubber ring 2, and rubber ring 2 is polyurethane material and is bowl-type that polyurethane material has wear resistance; Spring bearer plate 3 is close on rubber ring 2 inwalls, is fixed with gland nut 4.When in the steel bushing of piston at slurry pump when reciprocating, rubber ring 2 on the piston and steel bushing form sealing surface, the sealing face suck and the pressure effect of ejection mud itself under, make it to expand, reach the purpose of compensation, thereby, the working life of prolongation piston.
Claims (3)
1, the self-sealing piston of using on a kind of slurry pump comprises spool (1), it is characterized in that: be with bowl-type rubber ring (2) back on the spool (1) and be close to rubber ring (2) inwall by spring bearer plate (3).
2, self-sealing piston according to claim 1 is characterized in that: pressing plate (3) is close to rubber ring (2) inwall by gland nut (4).
3, self-sealing piston according to claim 1 is characterized in that: the material of rubber ring (2) is an abrasion resistant polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285618 CN2578561Y (en) | 2002-11-07 | 2002-11-07 | Self-sealing piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285618 CN2578561Y (en) | 2002-11-07 | 2002-11-07 | Self-sealing piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578561Y true CN2578561Y (en) | 2003-10-08 |
Family
ID=33746584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02285618 Expired - Fee Related CN2578561Y (en) | 2002-11-07 | 2002-11-07 | Self-sealing piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578561Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481841A (en) * | 2014-11-28 | 2015-04-01 | 四川航空工业川西机器有限责任公司 | Ultrahigh-pressure piston |
| CN105422435A (en) * | 2015-12-16 | 2016-03-23 | 崔金生 | Piston assembly for pressure well |
| CN107600768A (en) * | 2017-09-26 | 2018-01-19 | 新乡市恒星科技有限责任公司 | A kind of lubricating grease holding vessel of convenient transportation |
-
2002
- 2002-11-07 CN CN 02285618 patent/CN2578561Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481841A (en) * | 2014-11-28 | 2015-04-01 | 四川航空工业川西机器有限责任公司 | Ultrahigh-pressure piston |
| CN104481841B (en) * | 2014-11-28 | 2017-11-28 | 四川航空工业川西机器有限责任公司 | Super-pressure piston |
| CN105422435A (en) * | 2015-12-16 | 2016-03-23 | 崔金生 | Piston assembly for pressure well |
| CN107600768A (en) * | 2017-09-26 | 2018-01-19 | 新乡市恒星科技有限责任公司 | A kind of lubricating grease holding vessel of convenient transportation |
| CN107600768B (en) * | 2017-09-26 | 2023-12-19 | 新乡市恒星科技有限责任公司 | Lubricating grease storage tank convenient to transport |
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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 |