CN201351599Y - Piston assembly adopting complex retainer ring - Google Patents
Piston assembly adopting complex retainer ring Download PDFInfo
- Publication number
- CN201351599Y CN201351599Y CNU200820170701XU CN200820170701U CN201351599Y CN 201351599 Y CN201351599 Y CN 201351599Y CN U200820170701X U CNU200820170701X U CN U200820170701XU CN 200820170701 U CN200820170701 U CN 200820170701U CN 201351599 Y CN201351599 Y CN 201351599Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- retainer ring
- crosshead
- piston
- piston assembly
- 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
- 239000002184 metal Substances 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims description 19
- 238000000034 method Methods 0.000 abstract description 6
- 239000013013 elastic material Substances 0.000 abstract description 5
- 238000012856 packing Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 239000005435 mesosphere Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a piston assembly adopting a complex retainer ring, which comprises a crosshead; wherein, one end of the crosshead is connected with a link rod; a piston ball seat and a piston hemisphere are arranged in the other end of the crosshead; the end of the piston hemisphere tightly abuts against one end of a piston; the piston is fixed by a compressing plug screw screwed in the crosshead, and is provided with a retainer ring groove, in which the complex retainer ring is mounted; the complex retainer ring consists of metal layers on both sides and an elastic material layer clamped between the metal layers; the elastic material layer tightly props the metal layers in the retainer ring groove; and the metal layer which is far from the link rod is directly contacted with the piston. The retainer ring of the piston assembly cannot easily get loose in the process of operation, centering deviation cannot be caused, and the automatic adjustment performance is good.
Description
Technical field
The utility model relates to the plunger piston assembly in the plunger pump.
Background technique
The erection drawing of traditional plunger piston assembly as shown in Figure 1.Connecting rod 1 passes through connecting rod head lining 2, crosshead pin 3, and crosshead 4, plunger ball seat 5, plunger hemisphere 6 compresses plug screw 9, and snap ring 7 and packing ring 8 drive plunger 10 and move back and forth.Owing to compress plug screw 9 and crosshead 4 being threaded, can't with the accurate centering of shaft axis of connecting rod 1 and plunger 10, also can't with snap ring 7 accurate centerings, have assembly error, packing ring 8 need be set remedy.In connecting rod 1 drive plunger 10 moves reciprocatingly process, will inevitably produce loosening, traditional plunger snap ring 7 no self-regulation abilities, and snap ring one side directly contacts with plunger by packing ring 8, discharge in the stroke at plunger, connecting rod forces in plunger by the plunger hemisphere that holds out against with plunger, plunger then pushes snap ring, thereby packing ring is stressed is easy to generate distortion greatly, causes the position under the plunger off-design state in the working procedure, produces off-limits alignment deviation, thereby make plunger 7 produce eccentric wear, phenomenons such as heating have increased working resistance, and system effectiveness is reduced.
And, this defective can not solve by changing packing ring 8 into elastic material, because being in, packing ring 8 compresses between plug screw 9 and the snap ring 7, compress plug screw 9 and crosshead 4 to be threaded, packing ring 8 is between rotary component and the on-rotatably moving part, the as easy as rolling off a log elastic washer that damages by pressure in compressing plug screw 9 rotary courses makes it to lose efficacy.
Summary of the invention
Easily loosening in the course of the work for the snap ring that overcomes traditional plunger piston assembly, can produce problems such as alignment deviation, difficult adjustings, the utility model proposes a kind of snap ring working procedure and be difficult for loosening, as can not produce alignment deviation, employing compound retainer ring that automatic adjusting function is good plunger piston assembly.
The utility model adopts following technological scheme:
Adopt the plunger piston assembly of compound retainer ring, comprise crosshead, the first end of described cross connects connecting rod, the other end is built-in with plunger ball seat and plunger hemisphere, the end of described plunger hemisphere and plunger one end hold out against, described plunger is fixed by the plug screw that compresses that is threaded with crosshead, described plunger is provided with annular groove, it is characterized in that: in the described annular groove compound retainer ring is housed, described compound retainer ring is made of the metal layer of the both sides elastomeric layer middle with being clipped in metal layer, described elastomeric layer holds out against metal layer in described annular groove, directly contacts with plunger away from the metal layer of connecting rod one side.
Further, the head of described connecting rod is socketed on the pin that is arranged in the described crosshead by lining.
Technical conceive of the present utility model is: plunger is an elastic material with the mesosphere of compound retainer ring, its metal layer away from connecting rod one side directly contacts with plunger, like this, discharge in the stroke at plunger, connecting rod forces in plunger by plunger hemisphere, plunger then pushes compound retainer ring, plunger no longer directly contacts with packing ring, so many defectives of having avoided the packing ring stress deformation to be brought, the middle elastomeric layer of compound retainer ring, good springiness, resistance capacity to deformation height, can according to when extruding the annular groove internal clearance size mediate automatically, plunger position is under the design point all the time, has avoided plunger poor, and produce eccentric wear because of centering, heating has improved whole system operation efficient.In plunger charging stroke and since plunger with compress plug screw and closely cooperate, the application of force of plunger mainly goes to act on crosshead by compressing plug screw, and then promotes connecting rod, so snap ring is stressed little this moment, is out of shape also little.
Because elastomeric layer only is subjected to concora crush, no longer pressurized can prevent that in the screw thread compacting part elastomeric layer lost efficacy.
The beneficial effects of the utility model: working procedure can be regulated automatically according to gap length, can not produce loosening, alignment deviation, reduces eccentric wear, heating, has improved whole system operation efficient.
Description of drawings
Fig. 1 is the structural representation of the plunger piston assembly of the traditional snap ring of use.
Fig. 2 adopts the schematic representation of the plunger piston assembly of compound retainer ring for the utility model.
Embodiment
Referring to Fig. 2: the plunger piston assembly that adopts compound retainer ring, comprise crosshead 4a, described crosshead 4a one end connects connecting rod 1a, the other end is built-in with plunger ball seat 5a and plunger hemisphere 6a, the end of described plunger hemisphere 6a and plunger 9a one end hold out against, described plunger 9a fixes by the plug screw 8a that compresses that is threaded with crosshead 4a, described plunger 9a is provided with annular groove, compound retainer ring 7a is housed in the described annular groove, described compound retainer ring 7a is made of the metal layer of the both sides elastomeric layer 10a middle with being clipped in metal layer, described elastomeric layer holds out against metal layer in described annular groove, directly contacts with plunger 9a away from the metal layer of connecting rod one side.
The head of described connecting rod 1a is socketed on the pin 3a that is arranged in the described crosshead 4a by lining 2a.
In the present embodiment, plunger is an elastic material with the mesosphere of compound retainer ring, its metal layer away from connecting rod one side directly contacts with plunger, like this, discharge in the stroke at plunger, connecting rod 1a forces in plunger 9a by plunger hemisphere 6a, plunger then pushes compound retainer ring 7a, plunger no longer directly contacts with packing ring, so many defectives of having avoided the packing ring stress deformation to be brought, the middle elastomeric layer 10a of compound retainer ring 7a, good springiness, the resistance capacity to deformation height, can according to when extruding the annular groove internal clearance size mediate automatically, make plunger position be under the design point all the time, avoided plunger poor because of centering, and the generation eccentric wear, heating has improved whole system operation efficient.In plunger charging stroke and since plunger 9a with compress plug screw 8a and closely cooperate, the application of force of plunger mainly removes to act on crosshead 4a by compressing plug screw 8a, and then promotes connecting rod 1a, so snap ring is stressed little this moment, is out of shape also little.
Because elastomeric layer 10a only is subjected to concora crush, no longer pressurized can prevent that in the screw thread compacting part elastomeric layer lost efficacy.
Claims (2)
1, adopt the plunger piston assembly of compound retainer ring, comprise crosshead, the first end of described cross connects connecting rod, the other end is built-in with plunger ball seat and plunger hemisphere, the end of described plunger hemisphere and plunger one end hold out against, described plunger is fixed by the plug screw that compresses that is threaded with crosshead, described plunger is provided with annular groove, it is characterized in that: in the described annular groove compound retainer ring is housed, described compound retainer ring is made of the metal layer of the both sides elastomeric layer middle with being clipped in metal layer, described elastomeric layer holds out against metal layer in described annular groove, directly contacts with plunger away from the metal layer of connecting rod one side.
2, the plunger piston assembly of employing compound retainer ring as claimed in claim 1 is characterized in that: the head of described connecting rod is socketed on the pin that is arranged in the described crosshead by lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820170701XU CN201351599Y (en) | 2008-12-18 | 2008-12-18 | Piston assembly adopting complex retainer ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820170701XU CN201351599Y (en) | 2008-12-18 | 2008-12-18 | Piston assembly adopting complex retainer ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351599Y true CN201351599Y (en) | 2009-11-25 |
Family
ID=41374987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820170701XU Expired - Lifetime CN201351599Y (en) | 2008-12-18 | 2008-12-18 | Piston assembly adopting complex retainer ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351599Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971835A (en) * | 2016-02-16 | 2016-09-28 | 梁国富 | Plunger oil-free high-pressure pump |
| CN106593848A (en) * | 2016-12-07 | 2017-04-26 | 宁波合力机泵股份有限公司 | Plunger pump power end |
-
2008
- 2008-12-18 CN CNU200820170701XU patent/CN201351599Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971835A (en) * | 2016-02-16 | 2016-09-28 | 梁国富 | Plunger oil-free high-pressure pump |
| CN106593848A (en) * | 2016-12-07 | 2017-04-26 | 宁波合力机泵股份有限公司 | Plunger pump power end |
| CN106593848B (en) * | 2016-12-07 | 2019-04-30 | 宁波合力机泵股份有限公司 | A kind of power end of plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091125 Effective date of abandoning: 20081218 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20091125 Effective date of abandoning: 20081218 |