CN217029147U

CN217029147U - Diesel oil pump with brush motor

Info

Publication number: CN217029147U
Application number: CN202220984052.7U
Authority: CN
Inventors: 孙国强; 黄利友; 黄金树; 唐世兢; 苏孙贤
Original assignee: Weifang Chenxiang Power Technology Co ltd
Current assignee: Weifang Chenxiang Power Technology Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-07-22
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a diesel pump with a brush motor, which belongs to the technical field of fuel pumps and comprises the brush motor, wherein two ends of the brush motor are respectively connected with a controller component and a pump body component; the stator component comprises a shell, magnetic shoes, magnetic shoe snap springs and magnetic shoe limiting supports, and the brush holder positioning bosses, the magnetic shoe limiting supports and the magnetic shoe snap springs are matched to fix the magnetic shoes on the shell; the utility model can simplify the structure, reduce the material consumption and reduce the cost; has the advantages of small volume and convenient arrangement and installation; the versatility can be improved.

Description

Diesel oil pump with brush motor

Technical Field

The utility model relates to a diesel pump with a brush motor, and belongs to the technical field of fuel pumps.

Background

In order to solve the problem of difficult engine exhaust, an electronic diesel pump driven by electric power needs to be integrated on a filter, but the diesel pump with a brush motor in the prior art has the following problems in practical application:

1. the existing brush motor diesel pump has large volume, occupies large space when being integrated on a filter, and is difficult to arrange.

2. The stator structure of the existing brush motor diesel pump adopts an aluminum support to be fixed on a casing to realize the limitation and positioning of a magnetic shoe, and then an aluminum shell is reused to fix a stator assembly, a controller assembly and a pump body assembly together, so that the structure is complex, the used materials are more, the cost is higher, and the outer diameter of the pump body is larger due to the larger inner diameter of the aluminum shell, and the pump body can not be used in a brushless motor.

3. The internal rotating speed of the existing diesel pump is basically related to parameters set in a controller, and the rotating speed cannot be adjusted according to the requirement of an engine, so that the flow rate can be adjusted.

In view of the foregoing, it is apparent that the prior art has inconvenience and disadvantages in practical use, and thus, needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides a diesel pump with a brush motor, which can simplify the structure, reduce the material consumption and reduce the cost; has the advantages of small volume and convenient arrangement and installation; the versatility can be improved.

In order to solve the technical problems, the utility model adopts the following technical scheme: a diesel pump with a brush motor comprises the brush motor, wherein two ends of the brush motor are respectively connected with a controller assembly and a pump body assembly, the brush motor comprises a stator assembly and a rotor assembly which are matched with each other, the controller assembly comprises a brush holder, and one end of the brush holder, which is close to the brush motor, is provided with a brush holder positioning boss;

the stator assembly comprises a machine shell, a magnetic shoe clamp spring and a magnetic shoe limiting support, wherein the brush holder positioning boss, the magnetic shoe limiting support and the magnetic shoe clamp spring are matched with each other to fix the magnetic shoe on the machine shell.

Furthermore, a circuit board is mounted on the brush holder and electrically connected with the brush holder insert; the brush holder insert is electrically connected with an inductor, and the inductor is electrically connected with a carbon brush;

and an ECU communication module is arranged on the circuit board. Furthermore, an oil outlet is arranged on the brush frame; the oil outlet is formed in one side, close to the magnetic shoe, of the carbon brush.

Further, the rotor assembly includes a rotor mechanically coupled to a coupling; the upper end of the rotor is limited and fixed through a clamp spring and a gasket; the rotor is electrically connected with the carbon brush.

Further, the pump body assembly comprises a pump body, a pump body step is arranged on the pump body, and the pump body is fixed on the casing in a riveting mode; a pump body oil cavity is formed in the pump body, and a pressure release valve is installed in the pump body oil cavity.

Furthermore, the controller assembly and the pump body assembly are mounted on the machine shell in a riveting and pressing mode.

Furthermore, the carbon brush, the inductor and the brush holder insert are all arranged on the brush holder; the carbon brush is tightly pressed through a carbon brush torsion spring; the carbon brush torsion spring is fixed on the brush frame;

an upper cover is arranged at the top of the brush holder, and brush holder sealing rings are arranged on the brush holder and the upper cover; the upper cover is provided with an interface and an upper cover insert, and the upper cover insert is electrically connected with the circuit board; the circuit board is connected with an engine control unit ECU (electronic control unit) through a wire harness.

Further, a fixed shaft is coaxially arranged on the pump body; the rotor assembly is arranged on the fixed shaft;

and a roller pump is installed in the pump body and is mechanically matched with the coupler.

Further, the bottom of the pump body is provided with a filter screen and a filter screen groove, and the filter screen is limited and fixed through the filter screen groove.

Furthermore, the device also comprises a bracket component sleeved outside the casing; the bracket assembly comprises a bracket ring and a bracket, the bracket ring is arranged below the bracket, and a first sealing ring is arranged between the bracket ring and the bracket;

the bracket component further comprises a second sealing ring, and the second sealing ring is arranged on the brush frame.

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the oil outlet is arranged between the carbon brush and the magnetic shoe, so that structural optimization is realized, and a brush holder positioning boss can be formed on the brush holder by injection molding; according to the brushless motor pump, the brush holder positioning boss, the magnetic shoe limiting support and the magnetic shoe clamp spring are adopted to fix the magnetic shoe on the machine shell, and the controller assembly and the pump body assembly are fixed on the machine shell in a riveting mode, so that the structure is consistent with that of a brushless motor, the pump body of the brushless motor can be used, and the universality of parts is improved.

2. The utility model optimizes the stator assembly structure of the brush motor, fixes the magnetic shoe by using the brush holder positioning lug boss, the magnetic shoe limiting bracket and the magnetic shoe clamp spring, has simple structure and less material consumption, and reduces the production cost.

3. The controller assembly of the present invention may communicate with an engine ECU to adjust the speed of rotation and hence the flow rate according to the engine requirements.

In conclusion, the utility model can simplify the structure, reduce the material consumption and reduce the cost; has the advantages of small volume and convenient arrangement and installation; the versatility can be improved.

The present invention will be described in detail below with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a partial cross-sectional view of the present invention;

FIG. 4 is another partial cross-sectional view of the present invention;

FIG. 5 is a cross-sectional view of the controller assembly (without the cover);

FIG. 6 is a schematic view of the controller assembly (without the cover);

fig. 7 is a top view of the controller assembly (without the cover).

In the figure, the position of the first and second end faces,

1-controller component, 101-upper cover, 102-upper cover insert, 103-brush holder, 104-brush holder insert, 105-brush holder insert seal ring, 106-carbon brush torsion spring, 107-inductor, 108-carbon brush, 109-oil outlet, 110-interface, 111-brush holder seal ring, 112-circuit board, 113-brush holder positioning boss, 2-stator component, 201-magnetic shoe limit bracket, 202-magnetic shoe, 203-magnetic shoe clamp spring, 204-casing, 3-rotor component, 301-clamp spring, 302-gasket, 303-rotor, 304-coupler, 4-pump body component, 401-fixed shaft, 402-pump body, 403-pressure relief valve seat, 404-filter screen, 405-filter screen groove, 406-pressure relief valve spring, 407-pressure relief valve pad, 408-pump body oil cavity, 409-pump body step, 410-roller pump, 411-pressure relief valve cover, 5-bracket assembly, 501-bracket ring, 502-first sealing ring, 503-bracket and 504-second sealing ring.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

Examples

As shown in fig. 1-7, the utility model provides a diesel pump with a brush motor, which comprises a controller assembly 1, a brush motor and a pump body assembly 4; the controller assembly 1 and the pump body assembly 4 are mechanically connected to two ends of a brush motor.

The controller assembly 1 comprises a brush holder 103, a circuit board 112 is mounted on the brush holder 103, and the circuit board 112 is electrically connected with a brush holder insert 104; the brush holder insert 104 is electrically connected with an inductor 107, and the inductor 107 is electrically connected with a carbon brush 108;

an ECU communication module is arranged on the circuit board 112, the circuit board 112 is connected with an engine control unit ECU wire harness through an interface 110, and the working speed and time of the fuel pump are controlled through ECU instructions.

The brush holder insert 104, the inductor 107 and the carbon brush 108 are all arranged on the brush holder 103; a brush holder insert sealing ring 105 is arranged between the brush holder 103 and the brush holder insert 104.

The brushed motor comprises a stator assembly 2 and a rotor assembly 3 which are matched, wherein the stator assembly 2 comprises a machine shell 204, a magnetic shoe 202, a magnetic shoe snap spring 203 and a magnetic shoe limiting bracket 201; the magnetic shoe limiting bracket 201 is arranged at the bottom of the magnetic shoe 202; one end of the brush holder 103 close to the brush motor is provided with a brush holder positioning boss 113, and the brush holder positioning boss 113 is mechanically matched with the magnetic shoe snap spring 203 and the magnetic shoe limiting support 201 to fix the magnetic shoe 202 on the machine shell 204. Specifically, the brush holder positioning boss 113 is used for adjusting a rotation offset angle of the brush motor and the magnetic shoe 202, the brush holder positioning boss 113 is attached to the inner wall of the casing 204, two magnetic shoes 202 are respectively placed on two sides of the brush holder positioning boss 113, and the magnetic shoe snap spring 203 limits the position of the magnetic shoe 202 in the diameter circumferential direction of the casing 204 to prevent the magnetic shoe from rotating; the magnetic shoe limiting bracket 201 limits the position of the magnetic shoe 202 in the axial direction of the machine shell 204 and is used for fixing the magnetic shoe so as to prevent the magnetic shoe 202 from moving along the axial direction of the machine shell 204.

An oil outlet 109 is formed in the brush holder 103, and the oil outlet 109 is formed in one side of the carbon brush 108 close to the magnetic shoe 202.

The rotor component 3 is arranged on the pump body component 4; the controller assembly 1 is mounted on the housing 204 by riveting.

The pump body assembly 4 comprises a pump body 402, a pump body step 409 is arranged on the pump body 402, and the pump body 402 is fixed on the casing 204 in a riveting manner; a pump body oil cavity 408 is formed in the pump body 402, a pressure release valve is installed in the pump body oil cavity 408, and the pressure release valve comprises a pressure release valve seat 403, a pressure release valve pad 407, a pressure release valve spring 406 and a pressure release valve cover 411.

A filter screen 404 and a filter screen groove 405 are arranged at the bottom of the pump body 402, and the filter screen 404 is limited and fixed through the filter screen groove 405; the screen 404 is used to filter impurities in the fuel.

The pump body assembly 4 further comprises a fixed shaft 401, and the fixed shaft 401 is coaxially mounted on the pump body 402; the rotor assembly 3 is mounted on the fixed shaft 401; a roller pump 410 is mounted within the pump body 402.

The rotor assembly 3 comprises a rotor 303, a coupler 304, a clamp spring 301 and a gasket 302, wherein the coupler 304 is mechanically matched with the rotor 303 and the roller pump 410, and when the rotor 303 rotates, the roller pump 410 is driven to rotate through the coupler 304; the upper end of the rotor 303 is limited by a clamp spring 301 and a gasket 302.

The carbon brush 108 is electrically connected with the rotor 303; the carbon brush 108 is pressed by a carbon brush torsion spring 106, and the carbon brush torsion spring 106 is fixed on the brush holder 103.

An upper cover 101 is installed at the top of the brush holder 103, and a brush holder sealing ring 111 is arranged between the brush holder 103 and the upper cover 101. The upper cover 101 is provided with an interface 110 and an upper cover insert 102, and the upper cover insert 102 is electrically connected with a circuit board 112.

The diesel pump with the brush motor further comprises a support assembly 5 sleeved outside the machine shell 204, and the support assembly 5 is used for being connected with a filter; the bracket assembly 5 comprises a bracket ring 501 and a bracket 503, wherein the bracket ring 501 is arranged below the bracket 503, and a first sealing ring 502 is arranged between the bracket ring 501 and the bracket 503; the holder assembly 5 further comprises a second sealing ring 504, and the second sealing ring 504 is mounted on the brush holder 103.

The working principle of the utility model is as follows:

the power supply supplies power to the control assembly, the brush motor is controlled to work, the brush motor drives the roller pump to rotate, fuel oil is sucked, the fuel oil is filtered by the filter screen and enters the pump body assembly, and air in front of the fuel oil is automatically extruded and discharged through the oil outlet through pressurization of the pump body assembly.

After the pressure of the pump body assembly rises, the pressure relief valve pad can be jacked open to form a bypass flow-discharging oil way, so that oil leakage caused by overhigh fuel pressure is effectively prevented, and the safety is improved;

the ECU communication module is arranged in the control assembly, the ECU can be electrically connected through a wire harness, the content of the ECU is identified, the internal parameters of the motor are adjusted, the rotating speed of the motor is controlled, and the flow of the pump is controlled.

The foregoing is illustrative of the best mode of the utility model and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.

Claims

1. The utility model provides a there is brush motor diesel pump, including the brush motor, there are both ends of brush motor connection director subassembly (1) and pump body subassembly (4) respectively, there is the brush motor including matched with stator module (2) and rotor subassembly (3), its characterized in that: the controller assembly (1) comprises a brush holder (103), and a brush holder positioning boss (113) is arranged at one end, close to a brush motor, of the brush holder (103);

stator module (2) include casing (204), magnetic shoe (202), magnetic shoe jump ring (203), the spacing support of magnetic shoe (201), brush yoke location boss (113), the spacing support of magnetic shoe (201), magnetic shoe jump ring (203) cooperate and fix magnetic shoe (202) on casing (204).

2. A diesel pump with a brush motor as defined in claim 1, wherein: a circuit board (112) is mounted on the brush holder (103), and the circuit board (112) is electrically connected with the brush holder insert (104); the brush holder insert (104) is electrically connected with an inductor (107), and the inductor (107) is electrically connected with a carbon brush (108);

an ECU communication module is arranged on the circuit board (112).

3. A diesel pump with a brush motor as defined in claim 1, wherein: an oil outlet (109) is arranged on the brush frame (103); the oil outlet (109) is formed in one side, close to the magnetic shoe (202), of the carbon brush (108).

4. A diesel pump with a brush motor as claimed in claim 2, wherein: the rotor assembly (3) comprises a rotor (303), and the rotor (303) is mechanically connected with a coupler (304); the upper end of the rotor (303) is limited and fixed through a clamp spring (301) and a gasket (302); the rotor (303) is electrically connected to the carbon brush (108).

5. A diesel pump with a brush motor as claimed in claim 4, wherein: the pump body assembly (4) comprises a pump body (402), a pump body step (409) is arranged on the pump body (402), and the pump body (402) is fixed on the machine shell (204) in a riveting manner; a pump body oil cavity (408) is formed in the pump body (402), and a pressure release valve is arranged in the pump body oil cavity (408).

6. A diesel pump with a brush motor as defined in claim 1, wherein: the controller assembly (1) and the pump body assembly (4) are arranged on the machine shell (204) in a riveting and pressing mode.

7. A diesel pump with a brush motor as claimed in claim 2, wherein: the carbon brush (108), the inductor (107) and the brush holder insert (104) are all arranged on the brush holder (103); the carbon brush (108) is pressed tightly through a carbon brush torsion spring (106); the carbon brush torsion spring (106) is fixed on the brush frame (103);

an upper cover (101) is installed at the top of the brush holder (103), and brush holder sealing rings (111) are arranged on the brush holder (103) and the upper cover (101); the upper cover (101) is provided with an interface (110) and an upper cover insert (102), and the upper cover insert (102) is electrically connected with the circuit board (112); the circuit board (112) is connected with an engine control unit ECU through an interface (110) by a wire harness.

8. A diesel pump with a brush motor as defined in claim 5, wherein: a fixed shaft (401) is coaxially arranged on the pump body (402); the rotor assembly (3) is arranged on the fixed shaft (401);

a roller pump (410) is installed in the pump body (402), and the roller pump (410) is mechanically matched with the coupling (304).

9. A diesel pump with a brush motor as claimed in claim 5, wherein: the bottom of the pump body (402) is provided with a filter screen (404) and a filter screen groove (405), and the filter screen (404) is limited and fixed through the filter screen groove (405).

10. A diesel pump with a brush motor as defined in claim 1, wherein: the support frame assembly (5) is sleeved outside the machine shell (204); the bracket assembly (5) comprises a bracket ring (501) and a bracket (503), the bracket ring (501) is arranged below the bracket (503), and a first sealing ring (502) is arranged between the bracket ring (501) and the bracket (503);

the bracket component (5) further comprises a second sealing ring (504), and the second sealing ring (504) is installed on the brush holder (103).