CN203584790U - Plunger piston structure - Google Patents
Plunger piston structure Download PDFInfo
- Publication number
- CN203584790U CN203584790U CN201320831229.0U CN201320831229U CN203584790U CN 203584790 U CN203584790 U CN 203584790U CN 201320831229 U CN201320831229 U CN 201320831229U CN 203584790 U CN203584790 U CN 203584790U
- Authority
- CN
- China
- Prior art keywords
- plunger piston
- plunger
- pump
- piston structure
- plunger bushing
- 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 - Lifetime
Links
- 230000007704 transition Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a plunger piston structure. The plunger piston structure comprises a plunger piston and a plunger piston sleeve, wherein the plunger piston is matched with the plunger piston sleeve in a sliding manner; the plunger piston sleeve is compressed and arranged on the second part of a pump by the first part of the pump; a radial groove is formed in the surface, for installing the plunger piston sleeve, of the second part; the plunger piston sleeve extends downwards to form a lower part; the lower part is tightly matched with the radical groove. The plunger piston structure can resist the tangential force, and prevents mutual abnormal wear between the plunger piston and the plunger piston sleeve, thus the pump performance of the radial plunger piston is ensured, and the service life is prolonged.
Description
Technical field
The utility model relates to pump technical field, is specifically a kind of piston structure.
Background technique
Prior art radial plunger pump, it comprises by first portion and second portion and is connected to form up and down the oil sucting cavity between first portion and second portion, the piston structure that is arranged in oil sucting cavity and circumferentially distributes along oil sucting cavity, piston structure comprises plunger, plunger bushing, plunger and plunger bushing sliding fit, plunger bushing is compressed and is arranged on second portion by first portion, it is first portion, plunger bushing, second portion three-decker is fixed together, due to radial plunger pump in the running, plunger is radial motion, but plunger is also subject to tangential force effect being subject to radial force simultaneously, in the course of time, under tangential force effect, plunger can be by plunger bushing top partially, make plunger bushing axis not diametrically, and then cause plunger and the mutual inordinate wear of plunger bushing, cause radial plunger pump degradation, even cannot work, reduction of service life.
Model utility content
The technical problems to be solved in the utility model is, provides a kind of and can keep out tangential force, prevents the piston structure of plunger and the mutual inordinate wear of plunger bushing, thereby guarantees radial plunger pump performance, improves working life.
The technical solution of the utility model is, the utility model piston structure, it comprises plunger, plunger bushing, plunger and plunger bushing sliding fit, plunger bushing is compressed and is arranged on the second portion of pump by the first portion of pump, second portion is provided with radial groove for the surface of erection column plug sleeve, and described plunger bushing extends a bottom downwards, this bottom and radial groove drive fit.
Adopt after said structure, the utility model compared with prior art, have the following advantages: because the side of radial groove has the tangential force of keeping out effect, so fundamentally overcome the problem that tangential force causes, therefore the utlity model has and can keep out tangential force, prevent the advantage of plunger and the mutual inordinate wear of plunger bushing, thereby guarantee radial plunger pump performance, improve working life.
As improvement, described plunger bushing inwardly shrinks and extends the bottom that a cross section is rectangular surfaces downwards through chamfered transition, and described radial groove is rectangle groove, and like this, plunger bushing is lighter and handier, is more conducive to the raising of performance of the present utility model.
Accompanying drawing explanation
Fig. 1 is the sectional view (having removed first portion) that adopts the radial plunger pump of the utility model piston structure.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Shown in figure, 1, second portion, 2, plunger, 3, plunger bushing, 4, inclined-plane, 5, bottom.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
This routine radial plunger pump comprises the piston structure that is connected to form up and down oil sucting cavity between first portion and second portion 1, is arranged in oil sucting cavity and circumferentially distributes along oil sucting cavity by first portion and second portion 1, the utility model piston structure, it comprises plunger 2, plunger bushing 3, plunger 2 and plunger bushing 3 sliding fits, plunger bushing 3 is compressed and is arranged on the second portion 1 of pump by the first portion of pump, second portion 1 is provided with radial groove for the surface of erection column plug sleeve 3, described plunger bushing 3 extends a bottom 5 downwards, this bottom 5 and radial groove drive fit.
Described plunger bushing 3 through inclined-plane 4 transition inwardly shrink and extend the bottom 5 that a cross section is rectangular surfaces downwards, described radial groove is rectangle groove.
Claims (2)
1. a piston structure, it comprises plunger (2), plunger bushing (3), plunger (2) and plunger bushing (3) sliding fit, plunger bushing (3) is compressed and is arranged on the second portion (1) of pump by the first portion of pump, it is characterized in that, second portion (1) is provided with radial groove for the surface of erection column plug sleeve (3), and described plunger bushing (3) extends a bottom (5) downwards, this bottom (5) and radial groove drive fit.
2. piston structure according to claim 1, is characterized in that, described plunger bushing (3) through inclined-plane (4) transition inwardly shrink and extend the bottom that a cross section is rectangular surfaces (5) downwards, described radial groove is rectangle groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831229.0U CN203584790U (en) | 2013-12-16 | 2013-12-16 | Plunger piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831229.0U CN203584790U (en) | 2013-12-16 | 2013-12-16 | Plunger piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584790U true CN203584790U (en) | 2014-05-07 |
Family
ID=50582722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320831229.0U Expired - Lifetime CN203584790U (en) | 2013-12-16 | 2013-12-16 | Plunger piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584790U (en) |
-
2013
- 2013-12-16 CN CN201320831229.0U patent/CN203584790U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |