US-12618411-B1 - Oil pump

Abstract

An oil pump includes an oil outlet part, a hollow oil conveying pipeline, an oil pumping part, and a sealing part. An oil outlet opening is defined in the oil outlet part. The oil conveying pipeline is provided with a first liquid channel. A first oil pumping opening is defined in the oil pumping part. The oil pumping part is connected to the oil outlet part through the oil conveying pipeline. The oil pumping part, the oil conveying pipeline, and the oil outlet part are in communication with each other. The oil pumping part is provided with an oil pumping housing and a driving motor. The driving motor is positioned inside the oil pumping housing. The driving motor is connected to the oil pumping housing. The driving motor is a brushless motor. The sealing part is configured for sealing and covering the first opening to seal the first installation cavity.

Inventors

• Zeng Yang
• Haihua Pan
• Guohui Chen

Assignees

• Zhuhai Pristar Technology Co., Ltd.

Dates

Publication Date

20260505

Application Date

20250414

Priority Date

20250403

Claims (19)

1. 1 . An oil pump, comprising: an oil outlet part, wherein an oil outlet opening is defined in the oil outlet part; a hollow oil conveying pipeline, wherein the oil conveying pipeline is provided with a first liquid channel; an oil pumping part, wherein a first oil pumping opening is defined in the oil pumping part; the oil pumping part is connected to the oil outlet part through the oil conveying pipeline, and the oil pumping part, the oil conveying pipeline, and the oil outlet part are in communication with each other; the oil pumping part is provided with an oil pumping housing and a driving motor, the driving motor is positioned inside the oil pumping housing, the driving motor is connected to the oil pumping housing, and the driving motor is used for driving oil to pass through the first oil pumping opening, the first liquid channel, and the oil outlet opening in sequence and flow out through the oil outlet opening; the driving motor is a brushless motor, the brushless motor comprises a motor housing, a stator winding part, and a permanent magnet rotor part, the motor housing is provided with a partition part, and the partition part is configured for dividing the motor housing into a first installation cavity and a second installation cavity; a first opening is defined in the first installation cavity, a second opening is defined in the second installation cavity, the stator winding part is installed in the first installation cavity through the first opening, and the permanent magnet rotor part is installed in the second installation cavity through the second opening; and a sealing part, wherein the sealing part is configured for sealing and covering the first opening to seal the first installation cavity; wherein the sealing part is an epoxy resin sealing part; and the epoxy resin sealing part is formed by pouring epoxy resin into the first opening and then curing the epoxy resin.
2. 2 . The oil pump according to claim 1 , further comprising a control box, wherein the control box is internally provided with a rechargeable battery and a control motherboard; the control box is connected to the oil conveying pipeline; the control motherboard and the battery are electrically connected to the driving motor; and the control motherboard is used for controlling a working status of the driving motor.
3. 3 . The oil pump according to claim 2 , further comprising an electrical connection wire, wherein the control motherboard is electrically connected to the driving motor through the electrical connection wire; and the electrical connection wire is electrically connected to the driving motor through the first liquid channel.
4. 4 . The oil pump according to claim 2 , wherein the oil conveying pipeline comprises a first connecting pipe, a second connecting pipe, and a straight-through pipe; a first end of the first connecting pipe is detachably connected to the oil pumping part; a second end of the first connecting pipe is detachably connected to a first end of the straight-through pipe; a first end of the second connecting pipe is detachably connected to the oil outlet part; and a second end of the second connecting pipe is detachably connected to a second end of the straight-through pipe.
5. 5 . The oil pump according to claim 4 , wherein a first penetrating opening is defined in the control box; the straight-through pipe is configured for penetrating through the first penetrating opening; the control box comprises a first housing and a second housing; the first housing and the second housing are detachably connected; the straight-through pipe is provided with a first position limiting plate and a second position limiting plate; an inner wall of the first housing abuts against the first position limiting plate; and an inner wall of the second housing abuts against the second position limiting plate, so as to stop the straight-through pipe in the first penetrating opening.
6. 6 . The oil pump according to claim 4 , wherein a first wire threading opening is defined in the straight-through pipe; a flexible first sealing rubber sleeve is provided inside the first wire threading opening; a second wire threading opening is defined in the first sealing rubber sleeve; an outer wall of the first sealing rubber sleeve is pressed and sealed against an inner wall of the first wire threading opening; an electrical connection wire electrically connects the control motherboard to the driving motor through the second wire threading opening and a first liquid channel; and an inner wall of the second wire threading opening is used for pressing and sealing against an outer side surface of the electrical connection wire.
7. 7 . The oil pump according to claim 4 , further comprising a first connecting sleeve and a first locking sleeve, wherein the first connecting pipe is sleeved on the first end of the straight-through pipe; the first connecting sleeve is detachably sleeved on the first connecting pipe; the first locking sleeve is detachably sleeved on the first connecting sleeve; and an inner side wall of the first locking sleeve presses against an outer side wall of the first connecting sleeve, so that an inner side wall of the first connecting sleeve presses and compresses a side wall of the first connecting pipe against the straight-through pipe.
8. 8 . The oil pump according to claim 7 , wherein the first connecting sleeve is provided with a first position limiting groove; the first locking sleeve is provided with a first position limiting protrusion; the first position limiting groove is connected to the first position limiting protrusion; the first connecting sleeve comprises a first upper half part and a first lower half part; the first locking sleeve is configured for pressing the first upper half part onto the first lower half part; the first end of the straight-through pipe is provided with a first annular groove; a first sealing ring is provided between the first connecting pipe and the straight-through pipe; and the first sealing ring is positioned inside the first annular groove.
9. 9 . The oil pump according to claim 4 , wherein a side wall of a control box is provided with connecting buckles, and also comprises a tightening rope; the tightening rope is connected to the connecting buckle, so that a tightening space is surrounded and formed between the tightening rope and the side wall of the control box; the tightening space is used for tightening the control box and the straight-through pipe to a barrel opening of an oil barrel; a side wall of the control box is also provided with a hanging buckle; the oil pump further comprises a flexible hanging rope; one end of the hanging rope is connected to the oil outlet part; an opposite end of the hanging rope is equipped with an oil cover; the oil cover is configured for disassembly covering the oil outlet opening; and the hanging buckle is used for hanging the hanging rope.
10. 10 . The oil pump according to claim 1 , wherein the oil conveying pipeline is a transparent oil conveying pipeline; alternatively, the oil conveying pipeline is a polyethylene oil conveying pipeline or a rubber oil conveying pipeline; alternatively, the oil conveying pipeline is a flexible oil conveying pipeline.
11. 11 . The oil pump according to claim 1 , wherein a width of the driving motor is in a range from 20 mm to 22 mm; a width of the oil pumping housing is greater than or equal to the width of the driving motor; and the width of the oil pumping housing is less than or equal to 27 mm.
12. 12 . The oil pump according to claim 2 , wherein the control box is provided with a first charging interface and a second charging interface; both the first charging interface and the second charging interface are electrically connected to the battery; the first charging interface and the second charging interface are different types of charging ports; the first charging interface is a first USB charging interface or a first TYPE-C charging interface; the second charging interface is a second vehicle-mounted cigarette lighter charging interface; the oil pump is also provided with a charging detection circuit; the charging detection circuit is electrically connected to the control motherboard and the battery; when the charging detection circuit detects that the battery is charged via the first charging interface or the second charging interface, the control motherboard turns off the driving motor; a boost module is also arranged between the driving motor and the battery; the boost module is used for increase a voltage of the battery and output the voltage to the driving motor; the control box is equipped with a switch button; the switch button is electrically connected to the control motherboard; the switch button is used for starting or shutting down the driving motor; the oil pump further comprises a slow start circuit; the slow start circuit is electrically connected to the control motherboard; when the switch button starts the driving motor, the slow start circuit controls the driving motor to gradually increase from a lowest rotational speed value to a highest rotational speed value within a preset time; the control box is equipped with a battery level indicator light and a working status indicator light; both the battery level indicator light and the working status indicator light are electrically connected to the control motherboard and the battery; the battery level indicator light is used for displaying a battery level of the battery; the working status indicator light is used for displaying the working status of the driving motor; the control box is also provided with a handle; the oil pump further comprises a voltage detection circuit; when the voltage detection circuit detects that an operating voltage value of the driving motor is greater than a preset voltage value, the control motherboard controls the driving motor to stop working, and the control motherboard restarts the driving motor within the preset time.
13. 13 . An oil pump, comprising: an oil outlet part, wherein an oil outlet opening is defined in the oil outlet part; a hollow oil conveying pipeline, wherein the oil conveying pipeline is provided with a first liquid channel; an oil pumping part, wherein a first oil pumping opening is defined in the oil pumping part: the oil pumping part is connected to the oil outlet part through the oil conveying pipeline, and the oil pumping part, the oil conveying pipeline, and the oil outlet part are in communication with each other; the oil pumping part is provided with an oil pumping housing and a driving motor, the driving motor is positioned inside the oil pumping housing, the driving motor is connected to the oil pumping housing, and the driving motor is used for driving oil to pass through the first oil pumping opening, the first liquid channel, and the oil outlet opening in sequence and flow out through the oil outlet opening: the driving motor is a brushless motor, the brushless motor comprises a motor housing, a stator winding part, and a permanent magnet rotor part, the motor housing is provided with a partition part, and the partition part is configured for dividing the motor housing into a first installation cavity and a second installation cavity: a first opening is defined in the first installation cavity, a second opening is defined in the second installation cavity, the stator winding part is installed in the first installation cavity through the first opening, and the permanent magnet rotor part is installed in the second installation cavity through the second opening; and a sealing part, wherein the sealing part is configured for sealing and covering the first opening to seal the first installation cavity; wherein the permanent magnet rotor part comprises a permanent magnet rotor and an impeller; the permanent magnet rotor is arranged in the second installation cavity through the second opening; the impeller is connected to the permanent magnet rotor; the first installation cavity is internally equipped with a protruding installation column; the stator winding part is sleeved on the installation column; the stator winding part comprises a winding installation housing and a metal winding; the winding installation housing is provided with a winding installation slot and a sleeving opening; the winding installation housing is sleeved on the installation column through the sleeving opening; and the metal winding is arranged in the winding installation slot.
14. 14 . The oil pump according to claim 13 , further comprising a rotor installation housing, wherein the rotor installation housing is connected to an inner side wall of the second installation cavity; the rotor installation housing is configured for preventing an axial movement of the permanent magnet rotor in the second installation cavity; a third opening is defined in the rotor installation housing; the permanent magnet rotor also comprises a connecting shaft; the connecting shaft penetrates out of the second installation cavity through the third opening and is connected to the impeller; an outer side wall of the rotor installation housing is provided with a first position limiting ring; the inner side wall of the second installation cavity is provided with a first position limiting ring slot; the first position limiting ring is positioned inside the first position limiting ring slot; a side wall of the second installation cavity is provided with slits and elastic side walls formed between the slits; the first position limiting ring slot is defined in the elastic side wall; the installation column is a hollow installation column; the stator winding part is sleeved on an outer surface of the installation column; an inner surface of the installation column is provided with a concave first installation slot; one end of the connecting shaft is inserted into the first installation slot; an opposite end of the connecting shaft penetrates out of the second installation cavity through the third opening and is connected to the impeller; a first bearing sleeve is provided between the connecting shaft and the third opening; a second bearing sleeve is provided between the connecting shaft and the first installation slot; the oil pump further comprises an installation sleeve; the installation sleeve is sleeved on the outer surface of the installation column; the installation sleeve is provided with a first wire clamping wall and a second wire clamping wall; a wire clamping slot is formed between the first wire clamping wall and the second wire clamping wall; and the first wire clamping wall and the second wire clamping wall are used for clamping an electrical connection wire in the wire clamping slot.
15. 15 . An oil pump, comprising: an oil outlet part, wherein an oil outlet opening is defined in the oil outlet part; a hollow oil conveying pipeline, wherein the oil conveying pipeline is provided with a first liquid channel; an oil pumping part, wherein a first oil pumping opening is defined in the oil pumping part; the oil pumping part is connected to the oil outlet part through the oil conveying pipeline, and the oil pumping part, the oil conveying pipeline, and the oil outlet part are in communication with each other: the oil pumping part is provided with an oil pumping housing and a driving motor, the driving motor is positioned inside the oil pumping housing, the driving motor is connected to the oil pumping housing, and the driving motor is used for driving oil to pass through the first oil pumping opening, the first liquid channel, and the oil outlet opening in sequence and flow out through the oil outlet opening; the driving motor is a brushless motor, the brushless motor comprises a motor housing, a stator winding part, and a permanent magnet rotor part, the motor housing is provided with a partition part, and the partition part is configured for dividing the motor housing into a first installation cavity and a second installation cavity; a first opening is defined in the first installation cavity, a second opening is defined in the second installation cavity, the stator winding part is installed in the first installation cavity through the first opening, and the permanent magnet rotor part is installed in the second installation cavity through the second opening; and a sealing part, wherein the sealing part is configured for sealing and covering the first opening to seal the first installation cavity; wherein the driving motor is connected to the oil pumping housing through hot melting.
16. 16 . The oil pump according to claim 15 , wherein an outer side wall of the driving motor is provided with a protruding first rib, an inner side wall of the oil pumping housing is provided with a first groove, and the first rib is connected to a side wall of the first groove through hot melting; alternatively, an outer side wall of the driving motor is provided with a first groove, an inner side wall of the oil pumping housing is provided with a protruding first rib, and the first rib is connected to a side wall of the first groove through hot melting.
17. 17 . An oil pump, comprising: an oil outlet part, wherein an oil outlet opening is defined in the oil outlet part; a hollow oil conveying pipeline, wherein the oil conveying pipeline is provided with a first liquid channel; an oil pumping part, wherein a first oil pumping opening is defined in the oil pumping part; the oil pumping part is connected to the oil outlet part through the oil conveying pipeline, and the oil pumping part, the oil conveying pipeline, and the oil outlet part are in communication with each other; the oil pumping part is provided with an oil pumping housing and a driving motor, the driving motor is positioned inside the oil pumping housing, the driving motor is connected to the oil pumping housing, and the driving motor is used for driving oil to pass through the first oil pumping opening, the first liquid channel, and the oil outlet opening in sequence and flow out through the oil outlet opening; the driving motor is a brushless motor, the brushless motor comprises a motor housing, a stator winding part, and a permanent magnet rotor part, the motor housing is provided with a partition part, and the partition part is configured for dividing the motor housing into a first installation cavity and a second installation cavity; a first opening is defined in the first installation cavity, a second opening is defined in the second installation cavity, the stator winding part is installed in the first installation cavity through the first opening, and the permanent magnet rotor part is installed in the second installation cavity through the second opening; and a sealing part, wherein the sealing part is configured for sealing and covering the first opening to seal the first installation cavity; wherein the oil outlet part is provided with an oil outlet housing; the oil outlet opening is defined in the oil outlet housing; the oil pump further comprises an infrared liquid level sensor; and the infrared liquid level sensor is connected to the oil outlet housing.
18. 18 . The oil pump according to claim 17 , wherein the oil outlet opening is defined in an end wall of the oil outlet housing; a side wall of the oil outlet housing is provided with a liquid level detection opening; the infrared liquid level sensor is provided with an infrared sensing head; and the infrared sensing head is oriented towards the liquid level detection opening.
19. 19 . The oil pump according to claim 17 , wherein the infrared liquid level sensor comprises a transparent first installation housing and an infrared sensing head; the first installation housing is connected to the oil outlet housing; a first installation opening is defined in the first installation housing; the infrared sensor head is arranged inside the first installation housing through the first installation opening; the oil pump further comprises a sealing plug; the sealing plug is configured for sealing and covering the first installation opening; a third wire threading opening is defined in the sealing plug; the infrared liquid level sensor is electrically connected to the control motherboard through the third wire threading opening; a side wall of the sealing plug is pressed and sealed against a side wall of the first installation opening; and an inner wall of the third wire threading opening is used for pressing and sealing against an outer surface of an electrical connection wire.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The application claims priority of Chinese patent application CN2025206306245, filed on Apr. 3, 2025, which is incorporated herein by reference in its entireties. TECHNICAL FIELD The present invention relates to the field of fuel pumps, particularly to an oil pump. BACKGROUND ART Currently, due to the limited space of vehicle's fuel tanks, vehicles require refueling after traveling certain distances. However, in remote areas where gas stations are scarce and located far apart, users typically carry fuel-containing barrels in their vehicles to enable timely refueling of the vehicle's fuel tank. Nevertheless, the substantial volume of these barrels makes it difficult to directly pour the fuel from the barrels into the vehicle's fuel tank. Consequently, there is an urgent market demand for an oil pump that facilitates the transfer of fuel from the barrels to the vehicle's fuel tanks. SUMMARY In order to overcome the shortcomings of the prior art, the present invention provides an oil pump. The oil pump includes: an oil outlet part, wherein an oil outlet opening is defined in the oil outlet part;a hollow oil conveying pipeline, wherein the oil conveying pipeline is provided with a first liquid channel;an oil pumping part, wherein a first oil pumping opening is defined in the oil pumping part; the oil pumping part is connected to the oil outlet part through the oil conveying pipeline, and the oil pumping part, the oil conveying pipeline, and the oil outlet part are in communication with each other; the oil pumping part is provided with an oil pumping housing and a driving motor, the driving motor is positioned inside the oil pumping housing, the driving motor is connected to the oil pumping housing, and the driving motor is used for driving oil to pass through the first oil pumping opening, the first liquid channel, and the oil outlet opening in sequence and flow out through the oil outlet opening; the driving motor is a brushless motor, the brushless motor includes a motor housing, a stator winding part, and a permanent magnet rotor part, the motor housing is provided with a partition part, and the partition part is configured for dividing the motor housing into a first installation cavity and a second installation cavity; a first opening is defined in the first installation cavity, a second opening is defined in the second installation cavity, the stator winding part is installed in the first installation cavity through the first opening, and the permanent magnet rotor part is installed in the second installation cavity through the second opening; anda sealing part, wherein the sealing part is configured for sealing and covering the first opening to seal the first installation cavity. Beneficial effects of the present invention are as follows. The present invention provides an oil pump. The oil pump includes the oil outlet part, the hollow oil conveying pipeline, the oil pumping part, and the sealing part. The oil outlet opening is defined in the oil outlet part. The oil conveying pipeline is provided with the first liquid channel. The first oil pumping opening is defined in the oil pumping part. The oil pumping part is connected to the oil outlet part through the oil conveying pipeline. The oil pumping part, the oil conveying pipeline, and the oil outlet part are in communication with each other. The oil pumping part is provided with the oil pumping housing and the driving motor. The driving motor is positioned inside the oil pumping housing. The driving motor is connected to the oil pumping housing. The driving motor is used for driving the oil to pass through the first oil pumping opening, the first liquid channel, and the oil outlet opening in sequence and flow out through the oil outlet opening. The driving motor is the brushless motor. The brushless motor includes the motor housing, the stator winding part, and the permanent magnet rotor part. The motor housing is provided with the partition part. The partition part is configured for dividing the motor housing into the first installation cavity and the second installation cavity. The first opening is defined in the first installation cavity. The second opening is defined in the second installation cavity. The stator winding part is installed in the first installation cavity through the first opening. The permanent magnet rotor part is installed in the second installation cavity through the second opening. The sealing part is configured for sealing and covering the first opening to seal the first installation cavity. Therefore, the brushless motor is capable of driving the oil in an oil tank to flow through the first oil pumping opening, the first liquid channel, and the oil outlet opening in sequence, and then flow out of the oil outlet opening into a vehicle's oil tank, thereby completing the refueling operation for the vehicle. Moreover, compared with an ordinary brushed motor, the brushless motor has a small los