CN102465876A - Internal rotor pump - Google Patents
Internal rotor pump Download PDFInfo
- Publication number
- CN102465876A CN102465876A CN2010105496236A CN201010549623A CN102465876A CN 102465876 A CN102465876 A CN 102465876A CN 2010105496236 A CN2010105496236 A CN 2010105496236A CN 201010549623 A CN201010549623 A CN 201010549623A CN 102465876 A CN102465876 A CN 102465876A
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- pump
- rotor
- plunger
- axial oil
- case
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention relates to an internal rotor pump, belonging to the field of fluid conveying devices. The internal rotor pump comprises a pump casing, wherein a cylindrical pump chamber is arranged in the pump casing, a rotor is arranged in the pump casing in an eccentric manner, the pump casing is arranged in an annular housing, a plurality of rollers are arranged between the pump casing and the housing; end caps are arranged at two ends of the housing, and are used for closing the pump casing and the rollers; an oil inlet is arranged on any end cap, a plurality of radial holes are uniformly arranged in the circumferential direction of the rotor, plunger pistons are inserted in the radial holes in a matched manner, end parts of the plunger pistons facing towards the pump chamber are free ends; an axial oil outlet is arranged on the rotor, and is communicated with the radial holes, axial oil paths are arranged in the plunger pistons; one ends of the axial oil paths are communicated with the axial oil outlet, and the other ends of the axial oil paths are communicated with the pump chamber; one-way valves are arranged in the axial oil paths; a semi-cylindrical oil distributing shaft is arranged in the axial oil outlet, and is fixedly connected with the end cap at one side; when the rotor rotates, the oil distributing shaft can always shade one sides of the radial holes with gradually increasing volume; and springs are arranged in the radial holes, and are used for pushing the plunger pistons to stretch out. The internal rotor pump is stable to move, and can be used for obviously lowering noise caused by movement.
Description
Technical field
The present invention relates to a kind of fluid delivery system, particularly a kind of positive displacement pump.
Background technique
A kind of vane pump is arranged in the positive displacement pump of existing technology, and its structure mainly includes pump case, is provided with columniform pump chamber in the pump case; Off-centre is provided with rotor in the pump chamber, radially offers some grooves on the rotor, and correspondence is fitted with blade one by one in said groove; One side of pump case is provided with filler opening; The opposite side of pump case is provided with oil outlet, and the pump case two ends are provided with end cap, the blade setting that matches with end cap.During its work, rotor rotation, centrifugal force throws away blade; Form the space of a volume-variation between blade, pump case and the rotor; Through the setting of filler opening and oil outlet position, make filler opening become big space gradually towards volume, oil outlet is towards space that volume diminishes gradually; Can realize from side draught oil, opposite side oil extraction.Its deficiency is: the leaf quality of this pump is little, needs higher rotation speed just can make the good sealing of formation between blade and the pump case inner chamber, excessive wear easily between blade and the pump case; In addition, blade two ends, top form the many places sealing surface, cause poor sealing easily and influence the efficient of pump.
Summary of the invention
The purpose of this invention is to provide a kind of internal rotor pump, make that its internal leakage is little, between the movement parts wearing and tearing little, simultaneously, it is suitable for slow-speed of revolution campaign, noise is little.
The objective of the invention is to realize through following technological scheme: a kind of internal rotor pump, be provided with the pump case of columniform pump chamber in comprising, off-centre is provided with rotor in the pump case; Said pump case is arranged in the case of ring, is provided with some rollers between pump case and the case, and the case two ends are provided with the end cap of sealing pump case and roller; Arbitrary end cap is provided with filler opening, circumferentially evenly offers some radial holes on the said rotor, cooperates in the radial hole to be inserted with plunger; Plunger is a free end towards the end of pump chamber, and rotor is provided with the axial oil outlet that is communicated with radial hole, is provided with axial oil duct in the said plunger; Axially oil duct one termination axis is to oil outlet, and the other end is connected pump chamber, axially is provided with one-way valve in the oil duct; Be provided with semi-cylindrical oil distributing shaft in the said axial oil outlet, oil distributing shaft is fixedly connected with the end cap of a side; During rotor rotation, oil distributing shaft blocks radial hole one side that increases gradually at volume all the time, is provided with in the said radial hole and pushes the spring that plunger outward is stretched out.
During this device work, the rotor one-way rotation drives plunger and makes circular movement, and the centrifugal force of plunger orders about the plunger outward motion; When low-speed motion, spring plays main impetus, and roller abuts on the pump chamber inwall, can drive pump case and rotate together; During plunger motion, can be protruding in the part area, at this moment, one-way valve is opened; Oil distributing shaft blocks the radial hole inboard simultaneously, the oily unidirectional oiling in radial hole in the pump chamber, and plunger continues motion, and plunger radial is to the radial hole medial movement; Closed check valve, simultaneously, radial hole and axially oil outlet connection can be through the outside oil extractions of axial oil outlet; So, shuttling movement, can be constantly from the filler opening oil-feed again from axial oil outlet oil extraction.This device motion is steady, and roller can be immersed in the oil, can be lubricated by well; Turnover oil is smooth and easy continuously, and internal leakage is little, and this device is adapted at working under the slow-revving situation; Pump case rotates with rotor, the resistance in the time of can reducing the plunger rotation, and this device motion noise is little, use is reliable; Can be made into the oil pump of low speed small flow, can significantly reduce motion noise.
As further improvement of the present invention, said roller can be spherical steel ball, also can be needle roller.
For reducing wearing and tearing, said plunger outer end is a ballhead.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is plunger and rotor assembly structure schematic representation.
Wherein, 1 pump case, 2 rotors, 3 plungers, 4 axial oil ducts, 5 one-way valves, 6 cases, 7 oil distributing shafts, 8 axial oil outlets, 9 rollers, 10 filler openings, 11 springs, 12 side direction hydraulic fluid ports.
Embodiment
Shown in the 1-3 as shown in the figure, be a kind of internal rotor pump, be provided with the pump case 1 of columniform pump chamber in comprising, off-centre is provided with rotor 2 in the pump case 1; Pump case 1 is arranged in the case 6 of ring, is provided with some rollers 9 between pump case 6 and the case 6, and roller 9 can be spherical steel ball, also can be needle roller; Case 6 two ends are provided with the end cap of sealing pump case 1 and roller 9; One of them end cap is provided with filler opening 10, circumferentially evenly offers some radial holes on the rotor 2, cooperates in the radial hole to be inserted with plunger 3; Plunger 3 is a free end towards the end of pump chamber, and this end is a ballhead; Rotor 2 is provided with the axial oil outlet 8 that is communicated with radial hole; Be provided with axial oil duct 4 in the plunger 3; Axially oil duct 4 one termination axises are to oil outlet, and the other end is connected pump chamber through plunger near the side direction hydraulic fluid port 12 that the end is provided with, and axially is provided with one-way valve 5 in the oil duct 4; Axially be provided with semi-cylindrical oil distributing shaft 7 in the oil outlet 8, oil distributing shaft 7 is fixedly connected with the end cap of a side; During rotor rotation, oil distributing shaft 7 keeps motionless and blocks radial hole one side that increases gradually at volume all the time, is provided with in the radial hole and pushes plunger 3 outwardly directed springs.
This oil pump is applicable under the slow-speed of revolution that its motion is steady, and noise is low more than the noise of existing gear pump.
Claims (4)
1. internal rotor pump is provided with the pump case of columniform pump chamber in comprising, off-centre is provided with rotor in the pump case; It is characterized in that: said pump case is arranged in the case of ring, is provided with some rollers between pump case and the case, and the case two ends are provided with the end cap of sealing pump case and roller; Arbitrary end cap is provided with filler opening, circumferentially evenly offers some radial holes on the said rotor, cooperates in the radial hole to be inserted with plunger; Plunger is a free end towards the end of pump chamber, and rotor is provided with the axial oil outlet that is communicated with radial hole, is provided with axial oil duct in the said plunger; Axially oil duct one termination axis is to oil outlet, and the other end is connected pump chamber, axially is provided with one-way valve in the oil duct; Be provided with semi-cylindrical oil distributing shaft in the said axial oil outlet, oil distributing shaft is fixedly connected with the end cap of a side; During rotor rotation, oil distributing shaft blocks radial hole one side that increases gradually at volume all the time, is provided with in the said radial hole and pushes the spring that plunger outward is stretched out.
2. a kind of internal rotor pump according to claim 1 is characterized in that: said roller is some spherical steel balls.
3. a kind of internal rotor pump according to claim 1 is characterized in that: said roller is some needle rollers.
4. according to each described a kind of internal rotor pump of claim 1-3, it is characterized in that: said plunger outer end is a ballhead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105496236A CN102465876A (en) | 2010-11-19 | 2010-11-19 | Internal rotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105496236A CN102465876A (en) | 2010-11-19 | 2010-11-19 | Internal rotor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102465876A true CN102465876A (en) | 2012-05-23 |
Family
ID=46069883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105496236A Pending CN102465876A (en) | 2010-11-19 | 2010-11-19 | Internal rotor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102465876A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775131A (en) * | 2014-03-04 | 2014-05-07 | 吉林大学 | Pneumatic vane motor with rolling pairs |
| WO2015058635A1 (en) * | 2013-10-21 | 2015-04-30 | 宋振才 | Energy conversion device |
-
2010
- 2010-11-19 CN CN2010105496236A patent/CN102465876A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015058635A1 (en) * | 2013-10-21 | 2015-04-30 | 宋振才 | Energy conversion device |
| CN103775131A (en) * | 2014-03-04 | 2014-05-07 | 吉林大学 | Pneumatic vane motor with rolling pairs |
| CN103775131B (en) * | 2014-03-04 | 2016-04-20 | 吉林大学 | There is the pneumatic vane motor of rolling pair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |