CN204061151U - Mud piston assembly - Google Patents
Mud piston assembly Download PDFInfo
- Publication number
- CN204061151U CN204061151U CN201420427987.0U CN201420427987U CN204061151U CN 204061151 U CN204061151 U CN 204061151U CN 201420427987 U CN201420427987 U CN 201420427987U CN 204061151 U CN204061151 U CN 204061151U
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- piston
- pressing plate
- piston core
- leather cup
- groove
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Abstract
Mud piston assembly, relate to the slurry pump field of oil field welldrilling, comprise piston rod, piston rod is arranged in cylinder sleeve, piston rod outer cover is provided with piston core, piston core is the tube-in-tube structure that one end has boss, leather cup is provided with in the outer cover of piston core, leather cup is arranged on the top of piston core boss, described leather cup is provided with nylon pad perpendicular between an end of piston core axis and piston core boss, the one side that described leather cup connects with piston core is provided with the groove extending to its other end, the pressing plate for fixing leather cup is provided with in this groove, pressing plate is set on piston core, described pressing plate contacts with the bottom of groove, between pressing plate and the sidewall of groove, there is space, fixed by jump ring between pressing plate and piston core.The utility model can reduce the frictional force between leather cup and cylinder sleeve, improves the working life of leather cup, and extends the life cycle of pressing plate.
Description
Technical field
The utility model relates to the slurry pump field of oil field welldrilling, is specifically related to the piston assembly on slurry pump.
Background technique
Slurry pump is equipment conventional in field drilling, in conventional direct circulation probing, it is by earth's surface flushing medium--clear water, mud or polymer flush fluid are under pressure, through the bottom of high pressure hose, water tap and drill string central hole direct sending drill bit, to reach cooling drill bit, the landwaste cut removed and is transported to the object on earth's surface.Conventional slurry pump is piston type or plunger type, and piston or plunger move reciprocatingly in pumping cylinder, to realize the object of force feed and circulating flushing washing lotion.
In existing mud piston, leather cup is set on piston steel core, and fixed by the pressing plate and jump ring being arranged on leather cup end, leather cup, close fit between piston core and pressing plate, in reciprocating motion of the pistons, all the time there is larger frictional force between leather cup and cylinder sleeve, reduce the working life of leather cup.And existing pressing plate is the plane structure with certain slope, it is easily out of shape under high pump function, and life cycle is short.
Model utility content
The purpose of this utility model is just to provide a kind of mud piston assembly, and it can reduce the frictional force between leather cup and cylinder sleeve, improves the working life of leather cup, and extends the life cycle of pressing plate.
For achieving the above object, the technical solution of the utility model is: mud piston assembly, comprise piston rod, piston rod is arranged in cylinder sleeve, piston rod outer cover is provided with piston core, piston core is the tube-in-tube structure that one end has boss, leather cup is provided with in the outer cover of piston core, leather cup is arranged on the top of piston core boss, described leather cup is provided with nylon pad perpendicular between an end of piston core axis and piston core boss, the one side that described leather cup connects with piston core is provided with the groove extending to its other end, the pressing plate for fixing leather cup is provided with in this groove, pressing plate is set on piston core, described pressing plate contacts with the bottom of groove, between pressing plate and the sidewall of groove, there is space, fixed by jump ring between pressing plate and piston core.
Described pressing plate is made up of with the bulge loop be arranged on bottom conically shaped the conically shaped that is set in piston core outside, and the width of bulge loop is consistent with the width of described bottom portion of groove, and described jump ring is arranged between the conically shaped top of pressing plate and described piston core.
Beneficial effect: the utility model is by changing the structure of leather cup, and make to form a groove structure between itself and piston core, thus increase the lifting surface area of leather cup when note is pressed, leather cup expands and then improves sealing effect.When piston moves in the opposite direction, leather cup pressure weakens and shrinks, and effectively can reduce the frictional force between leather cup and cylinder sleeve, extends the working life of leather cup and cylinder sleeve.Pressing plate of the present utility model is arranged in the groove between leather cup and piston core, and it is cone structure, can bear high pressure, not easily deform, and repeatedly can assemble utilization, extends its life cycle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Reference character is: 1, jump ring, 2, piston core, 3, leather cup, 4, nylon pad, 5, pressing plate, 6, groove.
Embodiment
As shown in Figure 1, mud piston assembly, comprise piston rod, piston rod is arranged in cylinder sleeve, piston rod outer cover is provided with piston core 2, piston core 2 has the tube-in-tube structure of boss for one end, leather cup 3 is provided with in the outer cover of piston core 2, leather cup 3 is arranged on the top of piston core boss, described leather cup 3 is provided with nylon pad 4 perpendicular between an end of piston core 2 axis and piston core boss, the one side that described leather cup 3 connects with piston core 2 is provided with the groove 6 extending to its other end, the pressing plate 5 for fixing leather cup 3 is provided with in this groove 6, pressing plate 5 is set on piston core 2, described pressing plate 5 contacts with the bottom of groove 6, between the sidewall of pressing plate 5 and groove 6, there is space, fixed by jump ring 1 between pressing plate 5 and piston core 2.The existence of described groove 6 makes leather cup 3 become large at pressure or when diminishing, can expand or shrink, and then plays the effect improving sealing effect and reduce frictional force between itself and cylinder sleeve.
Described pressing plate 5 is made up of with the bulge loop be arranged on bottom conically shaped the conically shaped that is set in piston core 2 outside, and the width of bulge loop is consistent with the width bottom described groove 6, and described jump ring 1 is arranged between the conically shaped top of pressing plate 5 and described piston core 2.The pressing plate 5 of this structure is taper due to it, therefore, it is possible to bear high pressure, not easily deforms, extends its life cycle.
Claims (2)
1. mud piston assembly, comprise piston rod, piston rod is arranged in cylinder sleeve, it is characterized in that: piston rod outer cover is provided with piston core (2), piston core (2) has the tube-in-tube structure of boss for one end, leather cup (3) is provided with in the outer cover of piston core (2), leather cup (3) is arranged on the top of piston core boss, described leather cup (3) is provided with nylon pad (4) perpendicular between the axial end of piston core (2) and piston core boss, the one side that described leather cup (3) connects with piston core (2) is provided with the groove (6) extending to its other end, the pressing plate (5) for fixing leather cup (3) is provided with in this groove (6), pressing plate (5) is set on piston core (2), described pressing plate (5) contacts with the bottom of groove (6), between the sidewall of pressing plate (5) and groove (6), there is space, fixed by jump ring (1) between pressing plate (5) and piston core (2).
2. mud piston assembly as claimed in claim 1, it is characterized in that: described pressing plate (5) is set in the outside conically shaped of piston core (2) by one and the bulge loop be arranged on bottom conically shaped forms, the width of bulge loop is consistent with the width of described groove (6) bottom, and described jump ring (1) is arranged between the conically shaped top of pressing plate (5) and described piston core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420427987.0U CN204061151U (en) | 2014-07-31 | 2014-07-31 | Mud piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420427987.0U CN204061151U (en) | 2014-07-31 | 2014-07-31 | Mud piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204061151U true CN204061151U (en) | 2014-12-31 |
Family
ID=52202680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420427987.0U Active CN204061151U (en) | 2014-07-31 | 2014-07-31 | Mud piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204061151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837774A (en) * | 2016-12-26 | 2017-06-13 | 卢小平 | A kind of micro-piston pump |
| CN113790152A (en) * | 2021-07-27 | 2021-12-14 | 合肥精创科技有限公司 | Slurry pump piston rubber and preparation method thereof |
-
2014
- 2014-07-31 CN CN201420427987.0U patent/CN204061151U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837774A (en) * | 2016-12-26 | 2017-06-13 | 卢小平 | A kind of micro-piston pump |
| CN106837774B (en) * | 2016-12-26 | 2019-05-14 | 卢小平 | A kind of micro-piston pump |
| CN113790152A (en) * | 2021-07-27 | 2021-12-14 | 合肥精创科技有限公司 | Slurry pump piston rubber and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |