CN203614387U - Variable cylinder structure of plunger pump - Google Patents
Variable cylinder structure of plunger pump Download PDFInfo
- Publication number
- CN203614387U CN203614387U CN201320706241.9U CN201320706241U CN203614387U CN 203614387 U CN203614387 U CN 203614387U CN 201320706241 U CN201320706241 U CN 201320706241U CN 203614387 U CN203614387 U CN 203614387U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- variable cylinder
- center
- variable
- plunger pump
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a variable cylinder structure of a plunger pump. The variable cylinder structure comprises a variable cylinder body and a central rod, wherein the central rod is mounted in the variable cylinder body; a central hole is formed in the variable cylinder body; a cylinder body left cavity is arranged in the variable cylinder body at the left side of the central hole; a cylinder body right cavity is arranged in the variable cylinder body at the right side of the central hole; a plug is arranged in the left cavity of the cylinder body; a gap is arranged between the inner wall of the central hole and the excircle of the central rod. As the central rod and the central hole are not sealed, the gap between the central rod and the central hole is increased; the processing precision of the central and the central hole can be greatly reduced, and a waste product is reduced; in addition, the variable cylinder structure of the plunger pump has the advantages that the structure is simple, the cost is reduced, and the work reliability is improved.
Description
Technical field
The utility model relates to a kind of part of plunger pump, especially a kind of variable cylinder structure of plunger pump.
Background technique
Plunger pump stroking mechanism is made up of variable cylinder, swash plate, central shaft, servovalve etc.Variable cylinder side-to-side movement drives swash plate to swing to realize angle variation, to reach the object that changes flow.Variable cylinder inside center bar in the time of work should be located sealing again.And the quality of fit requirement of sealing position is very high, because dimensional chain for assembly is a lot, assembling coordinates not accurate, easily causes coordinating tension even stuck, has a strong impact on the functional reliability of variable cylinder.
As shown in Figure 1, variable movement of cylinder block, center-pole 2 is very high with the center hole 3 contacting point quality of fits requirements of variable cylinder body 1, the perforation of its left chamber 4 of prevention cylinder body and the right chamber of cylinder body 5 high pressure oils.Because sealing requirements is high, the easily wearing and tearing that herein move back and forth are with stuck.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of function of not only locating but also sealing that changes center-pole is provided, make center-pole only play locating function, reduce quality of fit, reduce processing reject rate, save processing cost, improve the variable cylinder structure of the plunger pump of the working efficiency of variable cylinder and the functional reliability of whole pump.
The technological scheme providing according to the utility model, the variable cylinder structure of described plunger pump, comprise variable cylinder body and center-pole, in variable cylinder body, center-pole is installed, in variable cylinder body, there is center hole, in the variable cylinder body in center hole left side, be provided with the left chamber of cylinder body, in the variable cylinder body on center hole right side, be provided with the right chamber of cylinder body, in the left chamber of cylinder body, be provided with plug, between the inwall of center hole and the cylindrical of center-pole, there is gap.
Gap between the inwall of described center hole and the cylindrical of center-pole is 0.5 ~ 1.2mm.
The utility model is because center-pole and center hole need not seal, and both gaps can increase; Center-pole in the utility model and center hole machining accuracy can reduce greatly, reduce waste product; The utility model is simple in structure, reduces costs, and improves functional reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of prior art.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
The variable cylinder structure of this plunger pump, comprise variable cylinder body 1 and center-pole 2, center-pole 2 is installed in variable cylinder body 1, in variable cylinder body 1, there is center hole 3, in the variable cylinder body 1 in center hole 3 left sides, be provided with the left chamber 4 of cylinder body, in the variable cylinder body 1 on center hole 3 right sides, be provided with the right chamber 5 of cylinder body, in the left chamber 4 of cylinder body, be provided with plug 6, between the inwall of center hole 3 and the cylindrical of center-pole 2, there is gap.
Gap between the cylindrical of the inwall of described center hole 3 and center-pole 2 is 0.5 ~ 1.2mm.
The utility model has increased the gap of center-pole 2 with center hole 1, can not wear and tear with stuck; Increase by a plug 6, reached the object in the left chamber 4 of isolated cylinder body and the right chamber 5 of cylinder body.
The utility model has changed the function of not only locating but also sealing of original center-pole 2, and 2 of center-poles in the utility model play locating function, reduce quality of fit, reduce processing reject rate.
Claims (2)
1. the variable cylinder structure of a plunger pump, comprise variable cylinder body (1) and center-pole (2), center-pole (2) is installed in variable cylinder body (1), in variable cylinder body (1), there is center hole (3), in the variable cylinder body (1) in center hole (3) left side, be provided with the left chamber of cylinder body (4), in the variable cylinder body (1) on center hole (3) right side, be provided with the right chamber of cylinder body (5), it is characterized in that: in the left chamber of cylinder body (4), be provided with plug (6), between the inwall of center hole (3) and the cylindrical of center-pole (2), there is gap.
2. the variable cylinder structure of plunger pump as claimed in claim 1, is characterized in that: the gap between the inwall of described center hole (3) and the cylindrical of center-pole (2) is 0.5 ~ 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706241.9U CN203614387U (en) | 2013-11-08 | 2013-11-08 | Variable cylinder structure of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706241.9U CN203614387U (en) | 2013-11-08 | 2013-11-08 | Variable cylinder structure of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614387U true CN203614387U (en) | 2014-05-28 |
Family
ID=50767038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320706241.9U Withdrawn - After Issue CN203614387U (en) | 2013-11-08 | 2013-11-08 | Variable cylinder structure of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614387U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573616A (en) * | 2013-11-08 | 2014-02-12 | 无锡威孚精密机械制造有限责任公司 | Variable cylinder structure of plunger pump |
-
2013
- 2013-11-08 CN CN201320706241.9U patent/CN203614387U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573616A (en) * | 2013-11-08 | 2014-02-12 | 无锡威孚精密机械制造有限责任公司 | Variable cylinder structure of plunger pump |
| CN103573616B (en) * | 2013-11-08 | 2016-03-02 | 无锡威孚精密机械制造有限责任公司 | The variable cylinder structure of plunger pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103573616B (en) | The variable cylinder structure of plunger pump | |
| CN103016447A (en) | Constant-pressure and constant-force hydraulic servo cylinder with single outlet rod | |
| CN202900526U (en) | Thrust plate for hydraulic motors | |
| CN203614387U (en) | Variable cylinder structure of plunger pump | |
| CN103042707A (en) | Mechanical hydraulic combination-drive pressing machine | |
| CN205219783U (en) | Big stroke high velocity ram machine drive arrangement of formula is united to machine liquid | |
| CN203476883U (en) | Two-way synchronous reciprocating type air cylinder | |
| CN202251207U (en) | Hydraulic cylinder | |
| CN207696167U (en) | A kind of numerical control back-off machine material drag slot assembly elastic mechanism | |
| CN105365248A (en) | Mechanical-hydraulic combined driving system of large-stroke high-speed punch press | |
| CN202007887U (en) | Integral sealing engineering cylinder | |
| CN202053540U (en) | High-speed hydraulic punching machine | |
| CN205243836U (en) | Compensation structure in superminiature high -pressure gear pump | |
| CN203623015U (en) | Double hydraulic cylinder synchronous control system of gantry hydraulic press | |
| CN104289545A (en) | Electric liquid type fluttering platform used for cold extruding vibration machining | |
| CN204003385U (en) | Diaphragm booster pump protection structure | |
| CN103016454A (en) | Monitoring device for servo valve | |
| CN203257793U (en) | Damping device for hydraulic cylinder | |
| CN103807127A (en) | Centrally-mounted pushing mechanism of eccentric bearing of through hole of plunger of plunger pump | |
| CN103696957A (en) | Wear-resistant plunger pump | |
| CN203081877U (en) | Ultrahigh-pressure supercharger | |
| CN206917961U (en) | A kind of multi-cavity high thrust energy saving cylinder | |
| CN201737177U (en) | Pushing device for material packaging machine | |
| CN106907370A (en) | A kind of multi-cavity high thrust energy saving cylinder | |
| CN202510586U (en) | Internal respiration type booster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |