CN102465874A - Volume delivery pump - Google Patents
Volume delivery pump Download PDFInfo
- Publication number
- CN102465874A CN102465874A CN2010105495553A CN201010549555A CN102465874A CN 102465874 A CN102465874 A CN 102465874A CN 2010105495553 A CN2010105495553 A CN 2010105495553A CN 201010549555 A CN201010549555 A CN 201010549555A CN 102465874 A CN102465874 A CN 102465874A
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- China
- Prior art keywords
- pump
- oil
- rotor
- pump chamber
- axial
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention relates to a volume delivery pump in the field of fluid transportation devices, wherein a cylindrical pump chamber is arranged in a pump casing, and a rotor is eccentrically arranged in the pump chamber; and an oil inlet which is communicated with the pump chamber is arranged at one side of the pump casing. The volume delivery pump is characterized in that: the rotor is uniformly and circumferentially provided with a plurality of radial holes, a plunger is cooperatively inserted into each radial hole, and the end part of each plunger, facing to the pump chamber, is provided with a roller; the rotor is provided with axial oil outlet holes which are communicated with the radial holes; the plungers are provided with axial through holes, wherein a one-way valve is arranged in each axial through hole; a semicylindrical oil distribution shaft is arranged in each axial oil outlet hole; and when the rotor rotates, the oil distribution holes shelter one sides of the radial holes, of which the volumes are gradually increased. According the volume delivery pump disclosed by the invention, oil feeding and oil discharging are realized by using volumetric changes to ensure that oil is fed and discharged continuously and smoothly and internal leakage possibility is low, and because the rollers can obtain favorable lubrication on the pump casing, using reliability is achieved; and the volume delivery pump can be made into an oil pump with low flow rate and can be used as a shaft-driven oil pump of a prime motor, such as a diesel engine, a gasoline engine and the like.
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 positive displacement pump, make that its internal leakage is little, between the movement parts wearing and tearing little.
The objective of the invention is to realize like this: a kind of positive displacement pump, comprise pump case, be provided with columniform pump chamber in the pump case, off-centre is provided with rotor in the pump chamber; One side of pump case is provided with the filler opening that is communicated with pump chamber, circumferentially evenly offers some radial holes on the said rotor, cooperates in the radial hole to be inserted with plunger; Plunger is provided with roller towards the end of pump chamber, and rotor is provided with the axial oil outlet that is communicated with radial hole, and said plunger is provided with axial hole; Be provided with one-way valve in the axial hole; Axially be provided with semi-cylindrical oil distributing shaft in the oil outlet, during rotor rotation, oil distributing shaft blocks a side that increases gradually at said radial hole volume.
During this device work, the rotor one-way rotation drives plunger and makes circular movement, and centrifugal force orders about the plunger outward motion, and roller abuts on the pump chamber inwall; 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 oil oiling in radial hole in the pump case, 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 installs and moves steadily, and turnover oil is smooth and easy continuously, and internal leakage is little, and roller can be able to obtain good lubricating at pump case, and its noise is little, use is reliable; This device can be made into the oil pump of small flow, and the axle band oil pump that can be used as diesel engine, petrol engine prime movers uses, and can significantly reduce motion noise.
For reducing the wearing and tearing in the pump chamber, said pump chamber inwall is provided with wear-resisting bushing pipe.Wear-resisting bushing pipe can be changed, and guarantees its reliable operation, long service life.
When making that roller is crossed filler opening corresponding opening position, can unhinderedly pass through, said wear-resisting bushing pipe and filler opening corresponding position are provided with some oil throughs.Also can make the aperture of roller diameter much larger than filler opening.
As improvement of the present invention, said one-way valve comprises being provided with through spring pushes the valve ball that is installed in the valve seat, and the other end of spring is provided with the valve seat that has through hole, and valve seat is threaded in the said radial hole.This valve arrangement is simple, makes easy for installation.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a plunger internal structure schematic representation.
Wherein, 1 pump case, 2 rotors, 3 plungers, 4 rollers, 5 one-way valves, 6 wear-resisting bushing pipes, 7 oil distributing shafts, 8 axial oil outlets, 9 oil throughs, 10 filler openings, 11 bearing pins.
Embodiment
Shown in the 1-2 as shown in the figure, be a kind of positive displacement pump, be provided with wear-resisting bushing pipe 6 in its pump case 1, wear-resisting bushing pipe 6 inboards are columniform pump chamber, and off-centre is provided with rotor 2 in the pump chamber; One side of pump case 1 is provided with the filler opening 10 that is communicated with pump chamber, and wear-resisting bushing pipe 6 is provided with some oil throughs 9 with filler opening 10 corresponding positions; Circumferentially evenly offer some radial holes on the rotor 2, cooperate in the radial hole to be inserted with plunger 3, plunger 3 is connected with roller 4 towards the end of pump chamber through bearing pin 11; Rotor 2 is provided with the axial oil outlet 8 that is communicated with radial hole; Plunger 3 is provided with axial hole, is provided with one-way valve 5 in the axial hole, and said one-way valve 5 comprises being provided with through spring 501 pushes the valve ball 502 that is installed in the valve seat; The other end of spring is provided with the valve seat 503 that has through hole, and valve seat is threaded in the said radial hole; Axially be provided with semi-cylindrical oil distributing shaft 7 in the oil outlet 8, when rotor 2 rotated, oil distributing shaft 7 blocked a side that increases gradually at said radial hole volume.
Claims (4)
1. a positive displacement pump comprises pump case, is provided with columniform pump chamber in the pump case, and off-centre is provided with rotor in the pump chamber; One side of pump case is provided with the filler opening that is communicated with pump chamber, it is characterized in that: circumferentially evenly offer some radial holes on the said rotor, cooperate in the radial hole to be inserted with plunger; Plunger is provided with roller towards the end of pump chamber, and rotor is provided with the axial oil outlet that is communicated with radial hole, and said plunger is provided with axial hole; Be provided with one-way valve in the axial hole; Axially be provided with semi-cylindrical oil distributing shaft in the oil outlet, during rotor rotation, oil distributing shaft blocks a side that increases gradually at said radial hole volume.
2. a kind of positive displacement pump according to claim 1 is characterized in that: said pump chamber inwall is provided with wear-resisting bushing pipe.
3. a kind of positive displacement pump according to claim 2 is characterized in that: said wear-resisting bushing pipe and filler opening corresponding position are provided with some oil throughs.
4. according to the described a kind of positive displacement pump of claim 1-3, it is characterized in that: said one-way valve comprises being provided with through spring pushes the valve ball that is installed in the valve seat, and the other end of spring is provided with the valve seat that has through hole, and valve seat is threaded in the said radial hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105495553A CN102465874A (en) | 2010-11-19 | 2010-11-19 | Volume delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105495553A CN102465874A (en) | 2010-11-19 | 2010-11-19 | Volume delivery pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102465874A true CN102465874A (en) | 2012-05-23 |
Family
ID=46069881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105495553A Pending CN102465874A (en) | 2010-11-19 | 2010-11-19 | Volume delivery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102465874A (en) |
-
2010
- 2010-11-19 CN CN2010105495553A patent/CN102465874A/en active Pending
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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 |