CN104074740A - Magnetic coupling driven electric fuel oil pump - Google Patents
Magnetic coupling driven electric fuel oil pump Download PDFInfo
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- CN104074740A CN104074740A CN201410325096.9A CN201410325096A CN104074740A CN 104074740 A CN104074740 A CN 104074740A CN 201410325096 A CN201410325096 A CN 201410325096A CN 104074740 A CN104074740 A CN 104074740A
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- pump
- halfbody
- magnetic coupling
- pump core
- gear
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Abstract
The invention discloses a magnetic coupling driven electric fuel oil pump which comprises a motor, a shell and a pump core assembly, wherein the pump core assembly comprises a pump core shell with a pump cavity and a pump power element arranged in the pump cavity; the motor and the pump power element are in driving coupling fit; an inlet pipe and an outlet pipe which are communicated with the pump cavity are arranged on the pump core shell; the magnetic coupling driven electric fuel oil pump further comprises a magnetic coupler; the magnetic coupler comprises a first half body and a second half body which are in magnetic coupling transmission; the first half body of the magnetic coupler is fixed on an output shaft of the motor in a linkage manner, and the second haft body of the magnetic coupler is sealed, is rotatably arranged in the pump core shell and is in driving coupling with the pump power element. The magnetic coupling driven electric fuel oil pump is reasonable in structure design, long in service life and stable in quality and is capable of preventing mediums such as fuel from damaging the motor part.
Description
Technical field
The present invention relates to a kind of fuel pump, specifically refer to the electric fuel punp that a kind of magnetic couplings drives.
Background technique
The effect of automobile electric fuel pump is will the fuel oil sucking-off in fuel tank, be delivered in the fuel pipe of oil sprayer after pressurization, and fuel pressure regulator coordinates and sets up certain fuel pressure.
At present, existing a kind of automobile electric fuel pump, generally comprise the pump case that is provided with pump chamber, be arranged on electric machine assembly, pump core assembly in pump chamber, the wheel rotation in electric machine assembly driven pump core assembly, on pump case, be also provided with for fuel oil and flow into the inlet tube of pump chamber and supply fuel oil to flow out the outer pipe of pump chamber, fuel oil flows into pump chamber through inlet tube, connects the whole pump housing, and whole electric machine assembly and the equal long period of soaking of pump core assembly are in fuel oil, by flowing out from the outlet mouth of pipe after impeller supercharging, reach supercharging object again.
Existing automobile fuel ratio used is more various, not only has traditional gasoline, diesel, also has the fuel such as methyl alcohol, ethanol, and for the truck of some diesel engine, for making its exhaust emissions reach discharging standards, it is also used 32.5% urea liquid.
In order to ensure the normal operation of the electrical appliance parts such as electric machine assembly of electric fuel punp, be not subject to the corrosion of working medium solution, on the output shaft coordinating with impeller-driven on motor, movable sealing structure must be set, to prevent that fuel and 32.5% urea liquid from invading electric machine assembly inside, continuous use along with fuel pump, the sealing of its motive sealing can be worn and torn because motor shaft rotates, and then the sealing of motive sealing is declined, make medium solution leak to electrical appliance part, these fuel and 32.5% urea liquid itself all have certain corrosivity and volatility, long-time use meeting causes corrosion impact to electrical appliance parts such as electric machine assemblies, also can cause motor to break down.Cause fuel pump to shorten working life, mass stability is not good.
Summary of the invention
The object of the invention is the shortcoming and defect existing in order to overcome prior art, and a kind of reasonable in design is provided, can avoid the media such as fuel to cause infringement to motor, and the electric fuel punp of the stay-in-grade magnetic couplings driving of long service life.
For achieving the above object, technological scheme of the present invention is to include motor, shell and pump core assembly, pump core assembly includes with the pump core housing of pump chamber and is arranged at the pump power part in pump chamber, described motor drives to connect with pump power part and coordinates, on described pump core housing, be provided with inlet tube and the outer pipe communicating with pump chamber, also include magnetic coupling, this magnetic coupling includes magnetic coupling the first halfbody and magnetic coupling second halfbody of mutual magnetic couplings transmission, magnetic coupling the first halfbody interlock is fixed on the output shaft of motor, magnetic coupling the second halfbody sealing and rotation are arranged in pump core housing and with pump power part and drive and connect.
By this setting, utilizing magnetic coupling that the power of motor and pump power part are carried out to transmission coordinates, and, because motor and magnetic coupling the first halfbody are outside pump core housing, the output shaft of motor is without motive sealing is set, and be directly the static seal isolated with pump core assembly, realize zero leakage, stable and reliable for performance, can effectively prevent that the media such as gasoline, diesel oil, methyl alcohol, ethanol and 32.5% urea liquid in pump core assembly from causing infringement to motor, thereby ensure the working life of motor.In addition, this structure, pump power part in pump core assembly is running under the states such as the excessive clamping stagnation of dielectric viscosity, impurity obstruction or medium cryogenic temperature condensation, pump power part cannot rotate or rotational resistance very large, and drive by the magnetic couplings input of this structure, cannot rotate or rotate while being obstructed running into pump power part, its drag loading is greater than magnetic coupling and sets transmitting torque, the rotation of skidding of driven by motor magnetic coupling the first halfbody, thereby prevent burn-down of electric motor, greatly improved operation stability of the present invention.Under gear pump internal capacity changes, medium solution, from as schemed import inspiration as shown in the of attached 2, is pushed 5 one-way valves open, and medium solution extrudes from outlet, and without motor part, with heater isolation, flow of solution track pitch, from short, reaches energy-saving and cost-reducing, realizes the effect of environmental protection.
Further arranging is that described magnetic coupling the first halfbody includes the first halfbody shell, in this first halfbody shell, be provided with the first magnet ring being circular layout, described magnetic coupling the second halfbody includes the second halfbody shell, in this second halfbody shell, be provided with the second magnet ring being circular layout, the mutual magnetic couplings setting of this first magnet ring and the second magnet ring.By this setting, the magnetic coupling that a kind of structure stability is good is provided, easy for installation, good stability.
Further arranging is that described pump core housing includes pump core shell, pump core cap and upper end cap, and described inlet tube and outer pipe are arranged on upper end cap, is provided with described pump chamber between described pump core shell, pump core cap.
The bottom center that further setting is pump core shell is fixedly installed thrust disc, described magnetic coupling the second halfbody Yi Ce center is provided with centration axis, the outer end of this centration axis is rotated and is arranged on pump core cap, the opposite side central spherical of this magnetic coupling the second halfbody is rotated and is provided with body swivel bearing, and the outer end of this body swivel bearing is rotated apical grafting with thrust disc and coordinated.By this setting, magnetic coupling the second halfbody is stably rotated and be arranged in pump core housing, to turn round reliable and stable, rotational resistance is little.
Further arranging is on described pump core cap, to be provided with and the inner import ring seat of dock of the inlet tube on upper end cap and the outlet ring seat of docking with the outer pipe the inner on upper end cap, is provided with along the one-way valve of the fluid direction one-way conduction of outer pipe between described outlet ring seat and the inner of outer pipe.By this setting, ensured the one-way that delivery side of pump pipe transports, after automobile is out of service, guarantee that fuel pipe has enough pressure to exist, so that automobile normal starting next time.
Further arranging is that described one-way valve includes clapper and clapper Returnning spring, and described clapper is sealed and matched with the exterior edge face of outlet ring seat, and the two ends of this flap Returnning spring are connected to respectively on clapper and outer pipe the inner.
Further arrange is that described pump power part includes gear pump external toothing and rotation is arranged at the gear pump internal gear in gear pump external toothing, the modulus of gear pump external toothing and gear pump internal gear equates, the number of teeth of the mutual bias in the two center and gear pump external toothing is greater than the number of teeth of gear pump internal gear, between gear pump external toothing and gear pump internal gear, being provided with along with gear pump internal gear rotates drives external toothing to rotate and the formation periodically variable gap of volume size, in described pump core housing, with respect to gear pump external toothing and gear pump internal gear one side, be provided with diversion disk, on this diversion disk, be provided with the annular diversion trench with this gap corresponding matching, described gear pump internal gear coordinates with magnetic coupling the second halfbody coaxial transmission.By this, relative engagement that adopts gear pump external toothing and gear pump internal gear is set, realize and suck medium and discharge medium action, certainly this setting, the present invention is with gear pump pump core as an example at this, also can select leaf structure, roller type structure to serve as pump power part.
Further arranging is to be provided with annular driving click on described magnetic coupling the second halfbody, is provided with annular driving click and forms the annular internal tooth that coaxial transmission coordinates on described gear pump internal gear.By this setting, make the transmission between magnetic coupling the second halfbody and gear pump internal gear reliable and stable.
Further arrange is to be provided with the annular step groove corresponding with upper end cap on the outer end periphery of described pump core cap, the inner end of described upper end cap is positioned in this annular step groove, and the outer end reducing encapsulation of pump core shell is fixed on the upper and lower end parts outer wall of upper end cap, and the outer end reducing of described shell encapsulates on the outer wall of reducing encapsulation place of being fixed on pump core housing.By this setting, adopt the mode of reducing encapsulation not only to ensure assembly structure stable of each parts, and assembly technology is simple and reliable.
Further arranging is that described motor is the built-in driving brushless electric machine being placed in shell.When using 32.5% urea liquid in automobile exhaust emission system, under low temperature condition, avoiding remaining in delivery outlet front end to the solution in pipeline between nozzle freezes, when automobile does not travel, the solution that this section retained sucks back with motor reverse function, keeps this section of pipeline unimpeded, the pipeline blockage of bringing in order to avoid freeze and the generation of squib phenomenon, during for this automobile exhaust emission system, one-way valve need be cancelled and not filled, and the suck-back that could reverse.
Below in conjunction with specification drawings and specific embodiments, the present invention is described further.
Accompanying drawing explanation
Fig. 1 specific embodiment of the invention structural representation;
Fig. 2 pump core assembly of the present invention structural representation;
Fig. 3 pump core assembly of the present invention STRUCTURE DECOMPOSITION figure;
The tenminal block wiring diagram of Fig. 4 motor of the present invention.
Embodiment
Below by embodiment, the present invention is specifically described, is only used to further illustrate the present invention, can not be interpreted as limiting the scope of the present invention.
The specific embodiment of the present invention as Figure 1-4, include motor 1, shell 2 and pump core assembly 3, pump core assembly 3 includes with the pump core housing 31 of pump chamber and is arranged at the pump power part 32 in pump chamber, motor 1 described in the present embodiment is preferably the built-in driving brushless electric machine of clockwise and anticlockwise, as shown in Fig. 1,4, the wiring pin of its tenminal block 11 includes anodal 24VDC input pin 111, forward signal pins 112, reverse signal pin 113 and negative pole pin 114.Certainly this motor 1 of the present invention also can adopt brush motor, stepper motor and actuating motor etc.
In addition, motor 1 described in the present embodiment drives to connect with pump power part 32 and coordinates, described pump core housing 31 includes pump core shell 311, pump core cap 312 and upper end cap 313, on upper end cap 313, be provided with the inlet tube 3131 and the outer pipe 3132 that communicate with pump chamber, also include magnetic coupling 4, this magnetic coupling includes magnetic coupling the first halfbody 41 and magnetic coupling second halfbody 42 of mutual magnetic couplings transmission, magnetic coupling the first halfbody 41 interlocks are fixed on the output shaft 12 of motor 1, magnetic coupling the second halfbody 42 sealings and rotation are arranged in pump core housing 31 and with pump power part 32 and drive and connect, magnetic coupling the first halfbody 41 described in the present embodiment includes the first halfbody shell 411, in this first halfbody shell, be provided with the first magnet ring 412 being circular layout, described magnetic coupling the second halfbody 42 includes the second halfbody shell 421, in this second halfbody shell 421, be provided with the second magnet ring 422 being circular layout, this first magnet ring 412 and the mutual magnetic couplings setting of the second magnet ring 422.
In addition, the bottom center of the present embodiment pump core shell 311 is fixedly installed thrust disc 3111, described magnetic coupling the second halfbody 42 Yi Ce centers are provided with centration axis 423, the outer end of this centration axis is rotated and is arranged on pump core cap 312, the opposite side central spherical of this magnetic coupling the second halfbody 42 is rotated and is provided with body swivel bearing 424, and the outer end of this body swivel bearing 424 is rotated apical grafting with thrust disc 3111 and coordinated.
In addition, on pump core cap 312 described in the present embodiment, be provided with the import ring seat 3121 of docking with inlet tube 3131 the inners on upper end cap 313, and the outlet ring seat 3122 of docking with outer pipe 3132 the inners on upper end cap 313, between described outlet ring seat 3122 and the inner of outer pipe 3132, be provided with along the one-way valve 5 of the fluid direction one-way conduction of outer pipe, described one-way valve 5 includes clapper 51 and clapper Returnning spring 52, described clapper 51 is sealed and matched with the exterior edge face of outlet ring seat 3122, the two ends of this flap Returnning spring 52 are connected to respectively on clapper 51 and outer pipe 3132 the inners.
In addition, pump core power part structure 32 described in the present embodiment includes gear pump external toothing 321, rotation is arranged at the gear pump internal gear 322 in gear pump external toothing 321, the modulus of gear pump external toothing 321 and gear pump internal gear 322 equates, the number of teeth of the mutual bias in the two center and gear pump external toothing 321 is greater than the number of teeth of gear pump internal gear 322, between gear pump external toothing 321 and gear pump internal gear 322, being provided with along with gear pump internal gear rotates drives external toothing to rotate and the formation periodically variable gap of volume size, in described pump core housing, with respect to gear pump external toothing 321 and gear pump internal gear 322 1 sides, be provided with diversion disk 323, on described diversion disk 323, be provided with the annular diversion trench 3231 with this gap corresponding matching, described gear pump internal gear 322 coordinates with magnetic coupling the second halfbody 42 coaxial transmissions, as particularly, on described magnetic coupling the second halfbody 42, be provided with annular driving click 425, on described gear pump internal gear 322, be provided with annular driving click and form the annular internal tooth 3221 that coaxial transmission coordinates.Certainly these pump core power part 32 structures of the present invention also can adopt roller type structure, leaf structure etc.
In addition, on the outer end periphery of the pump core cap 312 described in the present embodiment, be provided with the annular step groove 3123 corresponding with upper end cap, the inner end of described upper end cap 313 is positioned in this annular step groove 3123, and the outer end 3114 reducing encapsulation of pump core shell 311 are fixed on the upper and lower end parts outer wall 3135 of upper end cap 313, and outer end 21 reducings of described shell 2 encapsulate on the outer wall of reducing encapsulation place of being fixed on pump core housing.
In addition, the present embodiment is at the interior many places O type circle that arranges of pump core assembly 3, and to ensure the sealing between each component, as shown in Figure 1, in this not go into detail for the present embodiment.
Claims (10)
1. the electric fuel punp that a magnetic couplings drives, include motor, shell and pump core assembly, pump core assembly includes with the pump core housing of pump chamber and is arranged at the pump power part in pump chamber, described motor drives to connect with pump power part and coordinates, on described pump core housing, be provided with inlet tube and the outer pipe communicating with pump chamber, it is characterized in that: also include magnetic coupling, this magnetic coupling includes magnetic coupling the first halfbody and magnetic coupling second halfbody of mutual magnetic couplings transmission, magnetic coupling the first halfbody interlock is fixed on the output shaft of motor, magnetic coupling the second halfbody sealing and rotation are arranged in pump core housing and with pump power part and drive and connect.
2. the electric fuel punp that a kind of magnetic couplings according to claim 1 drives, it is characterized in that: described magnetic coupling the first halfbody includes the first halfbody shell, in this first halfbody shell, be provided with the first magnet ring being circular layout, described magnetic coupling the second halfbody includes the second halfbody shell, in this second halfbody shell, be provided with the second magnet ring being circular layout, the mutual magnetic couplings setting of this first magnet ring and the second magnet ring.
3. the electric fuel punp that a kind of magnetic couplings according to claim 1 and 2 drives, it is characterized in that: described pump core housing includes pump core shell, pump core cap and upper end cap, described inlet tube and outer pipe are arranged on upper end cap, are provided with described pump chamber between described pump core shell, pump core cap.
4. the electric fuel punp that a kind of magnetic couplings according to claim 3 drives, it is characterized in that: the bottom center of pump core shell is fixedly installed thrust disc, described magnetic coupling the second halfbody Yi Ce center is provided with centration axis, the outer end of this centration axis is rotated and is arranged on pump core cap, the opposite side central spherical of this magnetic coupling the second halfbody is rotated and is provided with body swivel bearing, and the outer end of this body swivel bearing is rotated apical grafting with thrust disc and coordinated.
5. the electric fuel punp that a kind of magnetic couplings according to claim 3 drives, it is characterized in that: on described pump core cap, be provided with and the inner import ring seat of docking of inlet tube on upper end cap and the outlet ring seat of docking with the outer pipe the inner on upper end cap, between described outlet ring seat and the inner of outer pipe, be provided with along the one-way valve of the fluid direction one-way conduction of outer pipe.
6. the electric fuel punp that a kind of magnetic couplings according to claim 5 drives, it is characterized in that: described one-way valve includes clapper and clapper Returnning spring, described clapper is sealed and matched with the exterior edge face of outlet ring seat, and the two ends of this flap Returnning spring are connected to respectively on clapper and outer pipe the inner.
7. the electric fuel punp that a kind of magnetic couplings according to claim 1 drives, it is characterized in that: described pump power part includes gear pump external toothing and rotates and is arranged at the gear pump internal gear in gear pump external toothing, the modulus of gear pump external toothing and gear pump internal gear equates, the number of teeth of the mutual bias in the two center and gear pump external toothing is greater than the number of teeth of gear pump internal gear, between gear pump external toothing and gear pump internal gear, being provided with along with gear pump internal gear rotates drives external toothing to rotate and the formation periodically variable gap of volume size, in described pump core housing, with respect to gear pump external toothing and gear pump internal gear one side, be provided with diversion disk, on this diversion disk, be provided with the annular diversion trench with this gap corresponding matching, described gear pump internal gear coordinates with magnetic coupling the second halfbody coaxial transmission.
8. the electric fuel punp that a kind of magnetic couplings according to claim 7 drives, it is characterized in that: on described magnetic coupling the second halfbody, be provided with annular driving click, on described gear pump internal gear, be provided with annular driving click and form the annular internal tooth that coaxial transmission coordinates.
9. the electric fuel punp that a kind of magnetic couplings according to claim 3 drives, it is characterized in that: on the outer end periphery of described pump core cap, be provided with the annular step groove corresponding with upper end cap, the inner end of described upper end cap is positioned in this annular step groove, and the outer end reducing encapsulation of pump core shell is fixed on the upper and lower end parts outer wall of upper end cap, and the outer end reducing of described shell encapsulates on the outer wall of reducing encapsulation place of being fixed on pump core housing.
10. the electric fuel punp that a kind of magnetic couplings according to claim 1 drives, is characterized in that: described motor is the clockwise and anticlockwise brushless electric machine being placed in shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410325096.9A CN104074740A (en) | 2014-07-09 | 2014-07-09 | Magnetic coupling driven electric fuel oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410325096.9A CN104074740A (en) | 2014-07-09 | 2014-07-09 | Magnetic coupling driven electric fuel oil pump |
Publications (1)
| Publication Number | Publication Date |
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| CN104074740A true CN104074740A (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410325096.9A Pending CN104074740A (en) | 2014-07-09 | 2014-07-09 | Magnetic coupling driven electric fuel oil pump |
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| CN (1) | CN104074740A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405479A (en) * | 2014-11-14 | 2015-03-11 | 天纳克（苏州）排放系统有限公司 | Fluid transportation device |
| CN104806392A (en) * | 2015-04-16 | 2015-07-29 | 重庆万力联兴实业(集团)有限公司 | Pump casing cover of automobile electric fuel pump |
| CN106580111A (en) * | 2016-12-29 | 2017-04-26 | 宁波方太厨具有限公司 | Water tank and steaming cooking equipment with same |
| CN106593864A (en) * | 2016-12-29 | 2017-04-26 | 宁波方太厨具有限公司 | Two-way pump and steaming cooking equipment waterway structure applying two-way pump |
| CN106640637A (en) * | 2016-12-29 | 2017-05-10 | 宁波方太厨具有限公司 | Two-way pump and steaming-cooking equipment water circuit structure applying two-way pump |
| US10180096B2 (en) | 2014-06-11 | 2019-01-15 | Tenneco Automotive Operating Company Inc. | Fluid delivery system with line pressure control valve |
| US10202883B2 (en) | 2014-11-21 | 2019-02-12 | Tenneco (Suzhou) Emission System Co., Ltd. | Common rail assembly, urea injection system and application thereof |
| US10634034B2 (en) | 2014-11-21 | 2020-04-28 | Tenneco (Suzhou) Emission System Co., Ltd. | Common rail, application of the common rail, carbamide spraying system, and control method therefor |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10180096B2 (en) | 2014-06-11 | 2019-01-15 | Tenneco Automotive Operating Company Inc. | Fluid delivery system with line pressure control valve |
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| US10634034B2 (en) | 2014-11-21 | 2020-04-28 | Tenneco (Suzhou) Emission System Co., Ltd. | Common rail, application of the common rail, carbamide spraying system, and control method therefor |
| CN104806392A (en) * | 2015-04-16 | 2015-07-29 | 重庆万力联兴实业(集团)有限公司 | Pump casing cover of automobile electric fuel pump |
| CN106580111A (en) * | 2016-12-29 | 2017-04-26 | 宁波方太厨具有限公司 | Water tank and steaming cooking equipment with same |
| CN106593864A (en) * | 2016-12-29 | 2017-04-26 | 宁波方太厨具有限公司 | Two-way pump and steaming cooking equipment waterway structure applying two-way pump |
| CN106640637A (en) * | 2016-12-29 | 2017-05-10 | 宁波方太厨具有限公司 | Two-way pump and steaming-cooking equipment water circuit structure applying two-way pump |
| CN106580111B (en) * | 2016-12-29 | 2023-09-15 | 宁波方太厨具有限公司 | Water tank and steaming cooking equipment using same |
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Application publication date: 20141001 |