CN201851349U - Novel small control plunger piston of radial plunger pump - Google Patents
Novel small control plunger piston of radial plunger pump Download PDFInfo
- Publication number
- CN201851349U CN201851349U CN2010205618864U CN201020561886U CN201851349U CN 201851349 U CN201851349 U CN 201851349U CN 2010205618864 U CN2010205618864 U CN 2010205618864U CN 201020561886 U CN201020561886 U CN 201020561886U CN 201851349 U CN201851349 U CN 201851349U
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- CN
- China
- Prior art keywords
- plunger piston
- control plunger
- small control
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a novel small control plunger piston of a radial plunger pump, which comprises a pump cover, a pump body, a valve body, a valve core, a plunger piston, a big control plunger piston and a small control plunger piston, a big sliding block and a small sliding block, a connecting rod, a stator, a rotor, a transmission shaft, a flow distribution shaft, a coupling joint and a return stroke ring, wherein the small control plunger piston is a cylinder and is provided with an oil groove; the center of the small control plunger piston is provided with a small spring; and the small control plunger piston is movably matched with a plunger piston hole of the pump body. When the high-pressure liquid of the valve body acts on the cylinder, the small control plunger piston is pushed to overcome the force of the spring to do work by virtue of balance of hydraulic pressure, the eccentricity of the stator is changed to be variable. As the cylinder structure is adopted and is provided with the oil groove, the novel small control plunger piston has functions of oil storage and lubrication when in work; and the novel small control plunger piston is simple in structure, easy for processing and operating, low in sliding friction and easier in assembly.
Description
Technical field
The utility model belongs to hydraulicdriven dynamical element, particularly a kind of novel little control plunger of radial plunger pump.
Background technique
At present, the little control piston structure complexity of external radial pump, difficulty of processing is big.
Summary of the invention
Problem to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of novel little control plunger of radial plunger pump is provided, and adopts the cylinder body structure, has oil groove on it, and sliding friction is little, and assembling is easier to.
The utility model solves its technical problem and takes following technological scheme to realize:
The novel little control plunger of a kind of radial plunger pump that provides according to the utility model, comprise pump cover 1, the pump housing 2, valve body 3, spool 4, plunger 5, size control plunger 6,7, big small slide block 8,9, connecting rod 10, stator 11, rotor 12, transmission shaft 13, pintle 14, shaft coupling 15 and backhaul ring 16, described little control plunger 7 is a cylindrical body, have oil groove 17 on it, little spring 18 is equipped with at the center, and the plunger hole 19 of the little control plunger and the pump housing movingly.
The utility model compared with prior art has significant advantage and beneficial effect:
Because the model utility cylinder adopts cylindrical structure, has oil groove on it, plays the oil storage lubrication during work, and is simple in structure, easy processing, easy to operate, sliding friction is little, and assembling is easier to.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is a sectional structure schematic representation of the present utility model;
Fig. 2 is the left-hand sectional structure schematic representation of Fig. 1;
Fig. 3 partly cuts open structural representation for little control plunger of the present utility model;
Fig. 4 is a little control plunger subassembly structural representation of the present utility model;
Wherein: 1, pump cover 2, the pump housing 3, valve body 4, spool 5, plunger 6, control plunger 7, little control plunger 8, big slide block, 9, small slide block 10, connecting rod 11, stator 12, rotor 13, transmission shaft 14, pintle 15, shaft coupling 16, backhaul ring 17, oil groove 18, little spring 19, plunger hole greatly
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and effect thereof that foundation the utility model is provided, describe in detail as after.
The novel little control plunger of a kind of radial plunger pump shown in Fig. 1～4, comprise pump cover 1, the pump housing 2, valve body 3, spool 4, plunger 5, size control plunger 6,7, big small slide block 8,9, connecting rod 10, stator 11, rotor 12, transmission shaft 13, pintle 14, shaft coupling 15 and backhaul ring 16, pump cover 1 is connected with the pump housing 2 usefulness screws 20, spool 4 is packed in the center hole of valve body 3, size control plunger 6,7 be contained in respectively in the big or small plunger hole of the pump housing 2 and with big small slide block 8,9 spheres join, big small slide block 8,9 another cambered surface and stator join, plunger 5 links to each other with connecting rod 10 and packs in the plunger hole of rotor 12, connecting rod 10 outer arced surface and stator 11 form friction pair, intrados and backhaul ring 16 form friction pair, rotor 12 is contained on the pintle 14, at transmission shaft 13, shaft coupling 15 drives high speed rotating down, utilizes the eccentric high pressure that produces.Described little control plunger 7 is a cylindrical body, has oil groove 17 on it, and little spring 18 is equipped with at the center, and the plunger hole 19 of the little control plunger and the pump housing movingly.When the valve body high pressure liquid acts on cylinder, promote little control plunger by fluid pressure balance and overcome the spring force work done, make stator change throw of eccentric and carry out variable.
Working principle:
During work, hydraulic oil enters valve body from inlet, produce a pressure drop after, act on the big control plunger, overcome spring force work done by the big control of hydraulic coupling promotion plunger, stator, little control plunger this moment, makes stator change throw of eccentric and carry out variable, and pump plays the constant-pressure variable effect simultaneously.
Claims (1)
1. the novel little control plunger of a radial plunger pump, comprise pump cover (1), the pump housing (2), valve body (3), spool (4), plunger (5), size control plunger (6,7), big small slide block (8,9), connecting rod (10), stator (11), rotor (12), transmission shaft (13), pintle (14), shaft coupling (15) and backhaul ring (16), it is characterized in that: described little control plunger (7) is a cylindrical body, have oil groove (17) on it, little spring (18) is equipped with at the center, and the plunger hole (19) of the little control plunger and the pump housing movingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205618864U CN201851349U (en) | 2010-10-15 | 2010-10-15 | Novel small control plunger piston of radial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205618864U CN201851349U (en) | 2010-10-15 | 2010-10-15 | Novel small control plunger piston of radial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851349U true CN201851349U (en) | 2011-06-01 |
Family
ID=44093744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205618864U Expired - Fee Related CN201851349U (en) | 2010-10-15 | 2010-10-15 | Novel small control plunger piston of radial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867432A (en) * | 2014-02-24 | 2014-06-18 | 燕山大学 | Plunger friction pair of high-pressure seawater axial plunger pump with bionic non-smooth surface |
| CN106884787A (en) * | 2017-03-31 | 2017-06-23 | 山东立辉重工有限公司 | Piston of nuclear submarine rudder arrangement servo variable pump and preparation method thereof |
-
2010
- 2010-10-15 CN CN2010205618864U patent/CN201851349U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867432A (en) * | 2014-02-24 | 2014-06-18 | 燕山大学 | Plunger friction pair of high-pressure seawater axial plunger pump with bionic non-smooth surface |
| CN106884787A (en) * | 2017-03-31 | 2017-06-23 | 山东立辉重工有限公司 | Piston of nuclear submarine rudder arrangement servo variable pump and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20111015 |