CN101865128A - Screw rod type electric oil fuel pump - Google Patents
Screw rod type electric oil fuel pump Download PDFInfo
- Publication number
- CN101865128A CN101865128A CN200910049486A CN200910049486A CN101865128A CN 101865128 A CN101865128 A CN 101865128A CN 200910049486 A CN200910049486 A CN 200910049486A CN 200910049486 A CN200910049486 A CN 200910049486A CN 101865128 A CN101865128 A CN 101865128A
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- screw rod
- pump
- driven
- electric oil
- type electric
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Abstract
The invention provides a screw rod type electric oil fuel pump, which comprises a pump case and a pump core, wherein the pump case and the pump core are fixed on a pump seat, the pump core is in a screw rod structure, the pump core comprises a driving screw rod and at least one driven screw rod, bottom parts of the driving rod and the driven screw rods are engaged, and the driving screw rod is connected with a motor of the electric oil fuel pump through a shaft coupler. Through the invention, large-flow-rate and high-pressure fuel can be provided, at the same time, the noise during the operation is low, and in addition, the electric oil fuel pump has the self absorption function, can be placed in an oil tank, and can also be arranged outside the oil tank.
Description
Technical field
The present invention relates to a kind of automobile fuel pump, especially a kind of screw rod type electric oil fuel pump.
Background technique
Prior art motorcar electric fuel pump has following several structure:
First kind of structure is: the impeller that the power section of oil pump is made for the enhancement engineering plastics, and under the drive of direct current generator, the impeller high speed rotating pumps fuel oil by the oil groove that passes in and out oiled-plate method; This structure, impeller is when high speed rotating, the pressure of oil-feed actinal surface is lower than the pressure of fuel-displaced actinal surface, under pressure, impeller tilts to direction all the time, cause blade two sections will with the friction of turnover oiled-plate method, wearing and tearing can cause impeller blade and gap between the turnover oiled-plate method to become greatly for a long time, underpressure, flow velocity descends; Simultaneously, when the fuel pump of this structure is opened, for the air in the pump housing is drained only, offer exhaust port on the oil-feed plate, when oil pump ran well, exhaust port had fuel oil and spills, and influences flow, so this structure fuel pump can only be applied to fuel tank internal.
Second kind of structure is: the power section of oil pump is to be made of external gear in the cycloid of powder metallurgy sintered moulding, and direct current generator drives the internal gear rotation, drives the external gear rotation by engaging force; By the structure of gear dislocation engagement, fuel oil is sucked, extrudes from the oiled-plate method fluting; This structure is because cycloidal gear is by powder metallurgy die casting, sinter molding, and the gap between the gear difficulty controls to ideal dimensions, and gear clearance is excessive, and the flow of fuel pump is low, decrease in efficiency; Gear clearance is too small, then rotates dumbly, and frictional force is big, lowers efficiency equally.
The third structure is: the power section of oil pump is made of roller,, rotates along irregular eccentric circle under centrifugal action by roller, by the change of volume size, fuel oil is sucked from oil-feed plate opening, extrudes from going out the oiled-plate method opening; But roller slideway and irregular eccentric circle are by the powder metallurgy die cast, and surface finishment is difficult to guarantee, causes roller to have on microcosmic and beats, and can produce noise during work, and may cause revealing, and reduces working efficiency.
Prior art motorcar electric vehicle fuel pump structure all exists: technological deficiencies such as flow is little, pressure is low, noise is big, inefficiency.
Summary of the invention
The present invention is for solving motorcar electric vehicle fuel pump structure in the prior art: technological deficiencies such as flow is little, pressure is low, noise is big, inefficiency, provide a kind of high pressure, big flow fuel can be provided, noise is low when working simultaneously, the screw rod type electric oil fuel pump that efficient is high.
In order to achieve the above object, the technical solution adopted in the present invention provides a kind of screw rod type electric oil fuel pump, comprises pump case, pump core, and described pump case and pump core are fixed on the pump seat; Described pump core is a screw-rod structure; Described pump core comprises initiatively a screw rod and an at least one driven screw rod, described active screw rod and the engagement of driven screw rod bottom; Described active screw rod is connected with the electric fuel oil pump motor by coupling.
Further, described pump seat is provided with cushion block; Described active screw rod and driven screw rod bottom are semiglobe, and the hemispherical bottom of described active screw rod and driven screw rod withstands on the described cushion block; Be provided with seal ring between described pump seat and the pump core.
Further, described pump case upper end is provided with the screw rod frame, and described active screw rod and driven screw rod are fixed by described screw rod frame; Described driven screw rod upper end is provided with limited post, and described limited post is fixed on the screw rod frame.
Further, described screw rod frame material is phenolic plastic; Described active screw rod and driven screw surface have been carried out nitriding treatment.
The present invention seals fuel oil by the engagement of master and slave screw rod from import, by rotation the fuel oil that seals continuously is extruded into top from the bottom, realizes pump oil; The length of master and slave screw rod can be adjusted according to the size of flow; The screw rod frame of fixing master and slave screw rod is taked the bakelite die cast that is made of phenolic plastic, dimensionally stable, and surface finishment is higher, and less to the impedance of oil, wear resistance is better; Principal and subordinate's screw surface has all been taked nitriding treatment, and hardness and degree of finish are all higher.
The present invention compared with prior art, its effect is actively and significantly.By the screw rod type electric oil fuel pump structure, the fuel of big flow, high pressure can be provided, noise is less when working simultaneously; And this electric fuel punp has self-absorption function, can be placed in the fuel tank, also can be arranged on outside the mailbox.
Description of drawings
Fig. 1 is the present invention embodiment's of having only a driven screw rod a screw rod type electric oil fuel pump structural representation;
Fig. 2 is that Fig. 1 embodiment's A-A is to sectional view;
Fig. 3 is the present invention embodiment's that two driven screw rods are arranged a screw rod type electric oil fuel pump structural representation;
Fig. 4 is that Fig. 3 embodiment's B-B is to sectional view;
Fig. 5 is the present invention embodiment's that three driven screw rods are arranged a screw rod type electric oil fuel pump structural representation;
Fig. 6 is that Fig. 5 embodiment's C-C is to sectional view.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, the present invention includes pump case 3 and pump core, pump case 3 and pump core are fixed on the pump seat 4; The pump core is made up of active screw rod 1 and driven screw rod 2, and initiatively screw rod 1 and driven screw rod 2 mesh in the bottom; Initiatively screw rod 1 is connected with the electric fuel oil pump motor by coupling 8; Pump seat 4 is provided with cushion block 5, and initiatively screw rod 1 and driven screw rod 2 bottoms are hemispherical structure, and initiatively the hemispherical bottom of screw rod 1 and driven screw rod 2 withstands on the cushion block 5; Be provided with seal ring 6 between pump seat 4 and the pump core; Pump case 3 upper ends are provided with screw rod frame 7, are provided with limited post 9 between screw rod frame 7 and the driven screw rod 2, and initiatively screw rod 1 and driven screw rod 2 are fixing by screw rod frame 7; The bakelite of the material of screw rod frame 7 for being made of phenolic plastic, initiatively nitriding treatment has all been carried out on the surface of screw rod 1 and driven screw rod 2.
In service, the electric fuel oil pump motor drives initiatively screw rod 1 high speed rotating by coupling 8, initiatively screw rod 1 drives driven screw rod 2 counterrotatings, because driving and driven screw rod bottom engagement, fuel sealing in active screw rod oil duct and the driven screw rod oil duct is got up, constantly risen by the Surface of action of envelope fuel oil in the rotary course, the fuel oil that seals is pumped; The bakelite material that screw rod frame 7 takes phenolic plastic to constitute, dimensional stability is good, highly polished, has also reduced noise simultaneously; Seal ring 6 has prevented the leakage of oil plant; Initiatively the bottom of screw rod 1 and driven screw rod 2 is hemispherical structure, has reduced the friction between driving and driven screw rod and the cushion block 5; Limited post 9 has prevented that the string that driven screw rod 2 makes progress from moving.
Be the example structure of two driven screw rods as shown in Figure 3, Figure 4, initiatively screw rod 1 drives two driven screw rods 2 rotations.
As Fig. 5, Figure 6 shows that the example structure of three driven screw rods, initiatively screw rod 1 drives three driven screw rods 2 and rotates.
Claims (4)
1. a screw rod type electric oil fuel pump comprises pump case, pump core, and described pump case and pump core are fixed on the pump seat, it is characterized in that: described pump core is a screw-rod structure; Described pump core comprises initiatively a screw rod and an at least one driven screw rod, described active screw rod and the engagement of driven screw rod bottom; Described active screw rod is connected with the electric fuel oil pump motor by coupling.
2. a kind of screw rod type electric oil fuel pump as claimed in claim 1 is characterized in that: described pump seat is provided with cushion block; Described active screw rod and driven screw rod bottom are semiglobe, and the hemispherical bottom of described active screw rod and driven screw rod withstands on the described cushion block; Be provided with seal ring between described pump seat and the pump core.
3. a kind of screw rod type electric oil fuel pump as claimed in claim 1 is characterized in that: described pump case upper end is provided with the screw rod frame, and described active screw rod and driven screw rod are fixed by described screw rod frame; Described driven screw rod upper end is provided with limited post, and described limited post is fixed on the screw rod frame.
4. a kind of screw rod type electric oil fuel pump as claimed in claim 1 is characterized in that: described screw rod frame material is phenolic plastic; Described active screw rod and driven screw surface have been carried out nitriding treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049486A CN101865128A (en) | 2009-04-17 | 2009-04-17 | Screw rod type electric oil fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049486A CN101865128A (en) | 2009-04-17 | 2009-04-17 | Screw rod type electric oil fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865128A true CN101865128A (en) | 2010-10-20 |
Family
ID=42956999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910049486A Pending CN101865128A (en) | 2009-04-17 | 2009-04-17 | Screw rod type electric oil fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547807A (en) * | 2011-05-20 | 2014-01-29 | 吉格姆凡赫克比希尔公司 | Pump, pump system and method for pumping a medium |
| CN109441810A (en) * | 2018-12-10 | 2019-03-08 | 江阴爱尔姆真空设备有限公司 | A kind of oil-free dry screw vacuum pump |
-
2009
- 2009-04-17 CN CN200910049486A patent/CN101865128A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547807A (en) * | 2011-05-20 | 2014-01-29 | 吉格姆凡赫克比希尔公司 | Pump, pump system and method for pumping a medium |
| US9587637B2 (en) | 2011-05-20 | 2017-03-07 | J.G.M. Van Heck Beheer B.V. | Pump, pump system and method for pumping a medium |
| CN109441810A (en) * | 2018-12-10 | 2019-03-08 | 江阴爱尔姆真空设备有限公司 | A kind of oil-free dry screw vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101020 |