Oil pump

Abstract

The utility model provides an oil pump, which comprises an oil outlet part, an oil inlet part and an oil outlet part, the oil conveying pipeline is provided with a first liquid channel; the oil pumping part is provided with a first oil pumping port; the oil pumping part is connected with the oil outlet part through an oil conveying pipeline; the oil pumping part is provided with an oil pumping shell and a driving motor, the driving motor is arranged in the oil pumping shell, the driving motor is connected with the oil pumping shell, and the driving motor is used for driving oil to sequentially pass through the first oil pumping opening, the first liquid channel and the oil outlet and flow out through the oil outlet; the driving motor is a brushless motor, the brushless motor comprises a motor shell, a stator winding part and a permanent magnet rotor part, and the stator winding part and the permanent magnet rotor part are both arranged in the motor shell; the stator winding part is sleeved on the mounting column; the stator winding part comprises a winding installation shell and a metal winding, the winding installation shell is provided with a winding installation groove, and the metal winding is arranged in the winding installation groove.

Description

Technical Field

[0001] This utility model relates to the field of fuel pumps, and in particular to an oil pump. Background Technology

[0002] Currently, due to the limited space in car fuel tanks, cars need to be refueled after traveling a certain distance. However, in some remote areas, gas stations are scarce and far away. Therefore, users often keep fuel cans in their cars for easy refueling. However, fuel cans are relatively large, making it difficult to directly pour the fuel from the can into the car's fuel tank. Therefore, there is an urgent need for a fuel pump to allow users to easily transfer fuel from fuel cans to their car's fuel tank. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides an oil pump, comprising:

[0004] The oil outlet section has an oil outlet.

[0005] A hollow oil pipeline having a first liquid passage;

[0006] The oil extraction section has a first oil extraction port; the oil extraction section is connected to the oil outlet section via an oil delivery pipe, and the oil extraction section, the oil delivery pipe, and the oil outlet section are interconnected; the oil extraction section has an oil extraction housing and a drive motor, the drive motor is disposed inside the oil extraction housing and connected to the oil extraction housing, and the drive motor is used to drive oil to sequentially pass through the first oil extraction port, the first liquid channel, and the oil outlet and flow out through the oil outlet;

[0007] The drive motor is a brushless motor, which includes a motor housing, a stator winding portion, and a permanent magnet rotor portion. Both the stator winding portion and the permanent magnet rotor portion are located within the motor housing. A protruding mounting post is provided inside the motor housing, and the stator winding portion is sleeved on the mounting post. The stator winding portion includes a winding mounting housing and a metal winding. The winding mounting housing has a winding mounting groove and a fitting opening. The winding mounting housing is sleeved on the mounting post through the fitting opening, and the metal winding is located within the winding mounting groove.

[0008] The beneficial effects of this utility model are as follows: This utility model provides an oil pump, which includes: an oil outlet section having an oil outlet; a hollow oil delivery pipe having a first liquid channel; and an oil suction section having a first oil suction port. The oil suction section is connected to the oil outlet section via the oil delivery pipe, and the oil suction section, the oil delivery pipe, and the oil outlet section are interconnected. The oil suction section has an oil suction housing and a drive motor, the drive motor being disposed inside the oil suction housing and connected to the oil suction housing. The drive motor drives oil to sequentially pass through the first oil suction port, the first liquid channel, and the oil outlet, and then flows out through the oil outlet. The drive motor is a brushless motor. The brush motor includes a motor housing, a stator winding section, and a permanent magnet rotor section, both of which are housed within the motor housing. The motor housing contains protruding mounting posts, on which the stator winding section is fitted. The stator winding section includes a winding mounting housing and a metal winding. The winding mounting housing has a winding mounting slot and a fitting opening. The winding mounting housing is fitted onto the mounting post through the fitting opening, and the metal winding is housed within the winding mounting slot. This effectively completes the installation of the metal winding and results in a compact structure, reducing the size of the drive motor and consequently the size of the oil extraction housing. This allows the oil extraction housing to extend into the oil tank through the tank opening to draw oil. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is another overall structural schematic diagram of this utility model;

[0013] Figure 3 This is an exploded view of this utility model;

[0014] Figure 4 yes Figure 3 Enlarged view of point A;

[0015] Figure 5 yes Figure 3 Enlarged view of point B;

[0016] Figure 6 yes Figure 3 Enlarged view of point C;

[0017] Figure 7 yes Figure 3 Enlarged view of point D;

[0018] Figure 8 This is another exploded view of this utility model;

[0019] Figure 9 yes Figure 8 Enlarged view of point E;

[0020] Figure 10 yes Figure 8 Enlarged view at point F;

[0021] Figure 11 yes Figure 8 Enlarged view of point G;

[0022] Figure 12 It is a sectional view taken along the oil pipeline, the pumping section, and the outlet section;

[0023] Figure 13 yes Figure 12 Enlarged view of point H;

[0024] Figure 14 yes Figure 12 Enlarged view of point R;

[0025] Figure 15 yes Figure 12 Enlarged view of point T;

[0026] Figure 16 yes Figure 12 Enlarged view of point L;

[0027] Figure 17 yes Figure 12 Enlarged view of point Y;

[0028] Figure 18 yes Figure 12 Enlarged view at point M;

[0029] Figure 19 This is another sectional view taken along the oil pipeline, the pumping section, and the outlet section;

[0030] Figure 20 yes Figure 19 Enlarged view of point N; Detailed Implementation

[0031] Reference Figures 1-20 An oil pump, comprising:

[0032] Oil outlet section 1, oil outlet section 1 has an oil outlet 11;

[0033] The hollow oil pipeline 2 has a first liquid passage 2001;

[0034] The oil extraction section 3 has a first oil extraction port 31; the oil extraction section 3 is connected to the oil outlet section 1 through an oil delivery pipe 2, and the oil extraction section 3, the oil delivery pipe 2, and the oil outlet section 1 are interconnected; the oil extraction section 3 has an oil extraction housing 32 and a drive motor 33, the drive motor 33 is located inside the oil extraction housing 32 and is connected to the oil extraction housing 32, the drive motor 33 is used to drive oil to sequentially pass through the first oil extraction port 31, the first liquid channel 2001, and the oil outlet 11 and flow out through the oil outlet 11; the drive motor 33 is a brushless motor, the brushless motor includes an electric motor... The motor housing 331 comprises a stator winding portion 332 and a permanent magnet rotor portion 333. The motor housing 331 has a partition portion 3311, which divides the motor housing 331 into a first mounting cavity 3312 and a second mounting cavity 3313. The first mounting cavity 3312 has a first opening 3314, and the second mounting cavity 3313 has a second opening 3315. The stator winding portion 332 is mounted in the first mounting cavity 3312 through the first opening 3314, and the permanent magnet rotor portion 333 is mounted in the second mounting cavity 3313 through the second opening 3315.

[0035] The sealing part 4 seals and covers the first opening 3314 to seal the first mounting cavity 3312.

[0036] The above structure includes: an oil outlet section 1 with an oil outlet 11; a hollow oil delivery pipe 2 with a first liquid channel 2001; and an oil extraction section 3 with a first oil extraction port 31. The oil extraction section 3 is connected to the oil outlet section 1 via the oil delivery pipe 2, and the oil extraction section 3, the oil delivery pipe 2, and the oil outlet section 1 are interconnected. The oil extraction section 3 has an oil extraction housing 32 and a drive motor 33. The drive motor 33 is located inside the oil extraction housing 32 and is connected to the oil extraction housing 32. The drive motor 33 drives the oil to sequentially pass through the first oil extraction port 31, the first liquid channel 2001, and the oil outlet 11, and then flows out through the oil outlet 11. The drive motor 33 is a brushless motor, which includes a motor housing 331, a stator winding section 332, and a permanent magnet rotor section 33. 3. The motor housing 331 has a partition portion 3311, which divides the motor housing 331 into a first mounting cavity 3312 and a second mounting cavity 3313. The first mounting cavity 3312 has a first opening 3314, and the second mounting cavity 3313 has a second opening 3315. The stator winding portion 332 is installed in the first mounting cavity 3312 through the first opening 3314, and the permanent magnet rotor portion 333 is installed in the second mounting cavity 3313 through the second opening 3315. A sealing portion 4 seals and covers the first opening 3314 to seal the first mounting cavity 3312, allowing the brushless motor to drive the oil in the oil tank to flow sequentially through the first oil inlet 31, the first liquid channel 2001, and the oil outlet 11, and then out through the oil outlet 11 into the car's fuel tank to complete the refueling process. Furthermore, compared to ordinary brushed motors, brushless motors have lower losses and a longer service life during use. Furthermore, since the partition portion 3311 divides the motor housing 331 into a first mounting cavity 3312 and a second mounting cavity 3313, the permanent magnet rotor portion 333 is installed in the second mounting cavity 3313 through the second opening 3315, the stator winding portion 332 is located in the first mounting cavity 3312, and the sealing portion 4 seals and covers the first opening 3314 to seal the first mounting cavity 3312, which can effectively protect the stator winding portion 332 and prevent the stator winding portion 332 from being corroded by liquid. The brushless motor also includes a driver 334 and a position detection device 335. The position detection device 335 is used to detect the position of the permanent magnet rotor part 333. The driver 334 is used to energize the stator winding part in a specific order according to the position of the permanent magnet rotor part 333, so that the magnetic field of the stator winding part 332 always maintains an angle difference with the magnetic field of the permanent magnet rotor part 333, thereby generating a continuous torque to drive the permanent magnet rotor part 333 to rotate. The rotation of the permanent magnet rotor part 333 drives the oil in the oil tank to pass through the first oil inlet 31, the first liquid channel 2001 and the oil outlet 11 in sequence and flow out to the fuel tank of the car through the oil outlet 11.

[0037] In this embodiment, the sealing part 4 is an epoxy resin sealing part 4; the epoxy resin sealing part 4 is formed by pouring epoxy resin into the first opening 3314 and then curing it. Specifically, after the electrical connection wire 53 is connected to the stator winding part through the first opening 3314, the epoxy resin solution is poured into the first opening 3314, and after the epoxy resin solution cures, the epoxy resin sealing part 4 that seals the first opening 3314 is formed.

[0038] In this embodiment, the permanent magnet rotor portion 333 includes a permanent magnet rotor 3331 and an impeller 3332. The permanent magnet rotor 3331 is disposed in the second mounting cavity 3313 through the second opening 3315, and the impeller 3332 is connected to the permanent magnet rotor 3331. A protruding mounting post 3316 is provided in the first mounting cavity 3312, and the stator winding portion 332 is sleeved on the mounting post 3316. It also includes a rotor mounting housing 3333, which is connected to the inner wall of the second mounting cavity and stops the permanent magnet rotor within the second mounting cavity. The rotor mounting housing 3333 has a third opening 33331, and the permanent magnet rotor 3331 also includes a connecting shaft 33311, which passes through the third opening 33331 out of the second mounting cavity and connects to the impeller. The outer wall of the rotor mounting housing 3333 has… The second mounting cavity has a first limiting ring 33332, and the inner wall of the second mounting cavity has a first limiting ring groove 33131, with the first limiting ring 33332 located within the first limiting ring groove 33131. The side wall of the second mounting cavity 3313 has a slit 33132 and an elastic side wall 33133 formed between the slits 33132, with the first limiting ring groove 33131 located within the elastic side wall 33133. The mounting post is a hollow mounting post, and the stator winding portion 332 is sleeved on the mounting post 331. 6. The outer surface of the mounting post has a recessed first mounting groove 33161 on its inner surface. One end of the connecting shaft 33311 is inserted into the first mounting groove 33161, and the other end of the connecting shaft 33311 passes through the third opening 33331 and exits the second mounting cavity to connect with the impeller. A first bearing sleeve 33333 is provided between the connecting shaft 33311 and the third opening 33331, and a second bearing sleeve 33162 is provided between the connecting shaft 33311 and the first mounting groove 33161. It also includes a mounting sleeve 33163, which is fitted onto the outer surface of the mounting post. The mounting sleeve 33163 has a first wire clamping wall 33164 and a second wire clamping wall 33165. A wire clamping groove 33166 is formed between the first wire clamping wall 33164 and the second wire clamping wall 33165. The first wire clamping wall 33164 and the second wire clamping wall 33165 are used to clamp the electrical connection wire 53 in the wire clamping groove 33166. With the above structure, the position detection device 335 is used to detect the position of the permanent magnet rotor 3331, and the driver 334 is used to energize the stator winding part in a specific order according to the position of the permanent magnet rotor 3331, so that the magnetic field of the stator winding part 332 always maintains an angle difference with the magnetic field of the permanent magnet rotor 3331, thereby generating a continuous torque to drive the permanent magnet rotor 3331 to rotate, so that the permanent magnet rotor 3331 drives the connecting shaft 33311 and the impeller 3332 to rotate. The impeller 3332 drives the oil in the oil tank to pass through the first oil inlet 31, the first liquid channel 2001 and the oil outlet 11 in sequence, and flows out of the oil outlet 11 into the car's oil tank to complete the work of refueling the car.Furthermore, when the first limiting ring 33332 needs to be installed in the first limiting ring groove 33131, the elastic sidewall 33133 can elastically expand to facilitate the installation of the first limiting ring 33332 in the first limiting ring groove 33131. After installation, the elastic sidewall 33133 resets and stops the first limiting ring 33332 in the first limiting ring groove 33131. The stator winding portion 332 includes a winding mounting housing 33201 and a metal winding 33202. The winding mounting housing has a winding mounting groove 33203 and a fitting opening 33204. The winding mounting housing is fitted onto the mounting post through the fitting opening, and the metal winding is disposed within the winding mounting groove. Specifically, the winding mounting housing is a plastic winding mounting housing.

[0039] In this embodiment, the drive motor 33 and the oil extraction housing 32 are connected by heat fusion. Specifically, the outer wall of the drive motor 33 has a raised first rib 336, and the inner wall of the oil extraction housing 32 has a first groove 321. The first rib 336 and the sidewall of the first groove 321 are connected by heat fusion. Alternatively, the outer wall of the drive motor 33 has a first groove 321, and the inner wall of the oil extraction housing 32 has a raised first rib 336. The first rib 336 and the sidewall of the first groove 321 are connected by heat fusion. With this structure, the connection between the drive motor 33 and the oil extraction housing 32 is more stable because the first rib 336 and the sidewall of the first groove 321 are connected by heat fusion. This also eliminates the need for an installation structure between the drive motor 33 and the oil extraction housing 32, effectively reducing the size of the oil extraction housing 32, allowing it to easily extend into the opening of the oil tank to draw oil from inside. Furthermore, the drive motor 33 and the oil extraction housing 32 are connected by a thermofusion, which can prevent the drive motor 33 from shaking with the oil extraction housing 32, effectively reduce the power loss of the drive motor 33, and improve the working efficiency of the drive motor 33.

[0040] This embodiment also includes a control box 5, which contains a rechargeable battery 51 and a control motherboard 52. The control box 5 is connected to the oil pipeline 2, and the control motherboard 52 and the battery 51 are electrically connected to the drive motor 33. The control motherboard 52 is used to control the working state of the drive motor 33. It also includes an electrical connection cable 53, through which the control motherboard 52 is electrically connected to the drive motor 33. The electrical connection cable 53 is electrically connected to the drive motor 33 via the first liquid channel 2001. With this structure, since the electrical connection cable 53 connects the drive motor 33 to the control motherboard 52 via the first liquid channel 2001, compared to an exposed electrical connection cable 53, the oil pipeline 2 can effectively protect the electrical connection cable 53, and the electrical connection cable 53 and the oil pipeline 2 are more neatly arranged, facilitating user use and storage of the oil pump.

[0041] In this embodiment, the oil pipeline 2 includes a first connecting pipe 21, a second connecting pipe 22, and a straight pipe 23. One end of the first connecting pipe 21 is detachably connected to the oil extraction section 3, and the other end of the first connecting pipe 21 is detachably connected to one end of the straight pipe 23. One end of the second connecting pipe 22 is detachably connected to the oil outlet section 1, and the other end of the second connecting pipe 22 is detachably connected to the other end of the straight pipe 23. The control box 5 has a first through-hole 54 through which the straight pipe 23 passes. The control box 5 includes a first housing 501 and a second housing 502, which are detachably connected. The straight pipe 23 has a first limiting plate 237 and a second limiting plate 238. The inner wall of the first housing 501 abuts against the first limiting plate 237, and the inner wall of the second housing 502 abuts against the second limiting plate 238, thereby blocking the straight pipe 23 within the first through-hole 54. Specifically, the straight-through pipe 23 has a first through-hole 231, and a flexible first sealing sleeve 232 is provided inside the first through-hole 231. The first sealing sleeve 232 has a second through-hole 2321. The outer wall of the first sealing sleeve 232 is pressed and sealed against the inner wall of the first through-hole 231, and the inner wall of the second through-hole 2321 is used to press and seal against the outer surface of the electrical connection wire 53. The control box 5 has a first stop wall 503, which abuts against the first sealing sleeve 232 and stops the first sealing sleeve 232 inside the first through-hole 231. Through the above structure, the connection between the control box 5 and the straight pipe 23 is effectively realized. Furthermore, the electrical connection wire connects the control board and the drive motor through the second wiring port and the first liquid channel. Since the first wiring port 231 is provided with a first sealing sleeve 232, oil can be prevented from seeping into the control box 5 through the first wiring port 231 and the second wiring port 2321, thereby improving the service life and safety of the oil pump.

[0042] In this embodiment, a first connecting sleeve 24 and a first locking sleeve 25 are also included. The first connecting pipe 21 is sleeved on one end of the straight pipe 23. The first connecting sleeve 24 is detachably sleeved on the first connecting pipe 21. The first locking sleeve 25 is detachably sleeved on the first connecting sleeve 24. The inner sidewall of the first locking sleeve 25 presses against the outer sidewall of the first connecting sleeve 24 so that the inner sidewall of the first connecting sleeve 24 presses and tightens the sidewall of the first connecting pipe 21 against the straight pipe 23. The first connecting sleeve 24 has a first limiting groove 241, and the first locking sleeve 25 has a first limiting protrusion 251. The first limiting groove 241 is connected to the first limiting protrusion 251. The first connecting sleeve 24 includes a first upper part 242 and a first lower part 243. The first locking sleeve 25 presses the first upper part 242 against the first lower part 243. One end of the straight pipe 23 has a first annular groove 233. A first sealing ring 234 is provided between the first connecting pipe 21 and the straight pipe 23. The first sealing ring 234 is located in the first annular groove 233. The first upper part 242 and the first lower part 243 both have positioning protrusions 2421, and the oil pipeline has a positioning groove 2422. The positioning protrusions are connected to the positioning grooves. Through the above structure, the connection between the first connecting pipe 21 and the straight pipe 23 is effectively realized. After the first connecting pipe 21 is sleeved onto the straight pipe 23, the first upper part 242 and the first lower part 243 are sleeved onto the first connecting pipe 21 so that the positioning protrusion connects with the positioning groove. The first locking sleeve 25 presses the first upper part 242 onto the first lower part 243, so that the first upper part 242 and the first lower part 243 squeeze and press the side wall of the oil pipeline onto the straight pipe 23. Furthermore, since a first sealing ring 234 is provided between the first connecting pipe 21 and the straight pipe 23, oil leakage at the connection between the first connecting pipe 21 and the straight pipe 23 can be effectively prevented. The first sealing ring 234 is a first silicone sealing ring or a first rubber sealing ring.

[0043] In this embodiment, a second connecting sleeve 26 and a second locking sleeve 27 are also included. The second connecting pipe 22 is sleeved on the other end of the straight pipe 23. The second connecting sleeve 26 is detachably sleeved on the second connecting pipe 22, and the second locking sleeve 27 is detachably sleeved on the second connecting sleeve 26. The inner sidewall of the second locking sleeve 27 presses against the outer sidewall of the second connecting sleeve 26, so that the inner sidewall of the second connecting sleeve 26 presses and tightens the sidewall of the second connecting pipe 22 against the straight pipe 23. The second connecting sleeve 26 has a second limiting groove 261, and the second locking sleeve 27 has a second limiting protrusion 271. The second limiting groove 261 is connected to the second limiting protrusion 271. The second connecting sleeve 26 includes a second upper part 262 and a second lower part 263, and the second locking sleeve 27... The second upper part 262 is pressed against the second lower part 263; the other end of the straight pipe 23 has a second annular groove 235, and a second sealing ring 236 is provided between the second connecting pipe 22 and the straight pipe 23, the second sealing ring 236 being located within the second annular groove 235; it also includes a third connecting sleeve 28 and a third locking sleeve 29, the first connecting pipe 21 is sleeved on one end of the oil extraction part 3, the third connecting sleeve 28 is detachably sleeved on the first connecting pipe 21, the third locking sleeve 29 is detachably sleeved on the third connecting sleeve 28, the inner sidewall of the third locking sleeve 29 presses against the outer sidewall of the third connecting sleeve 28, so that the inner sidewall of the third connecting sleeve 28 presses against the sidewall of the first connecting pipe 21 and presses it against the oil extraction part 3; the third connecting sleeve 28 has a third limiting recess The groove 281 and the third locking sleeve 29 have a third limiting protrusion 291, and the third limiting groove 281 is connected to the third limiting protrusion 291; the third connecting sleeve 28 includes a third upper part 282 and a third lower part 283, and the third locking sleeve 29 presses the third upper part 282 against the third lower part 283; one end of the oil extraction part 3 has a third annular groove 34, and a third sealing ring 341 is provided between the first connecting pipe 21 and the oil extraction part 3, and the third sealing ring 341 is located in the third annular groove 34; it also includes a fourth connecting sleeve 20 and a fourth locking sleeve 30, the second connecting pipe 22 is sleeved on one end of the oil outlet part 1, the fourth connecting sleeve 20 is detachably sleeved on the second connecting pipe 22, and the fourth locking sleeve 30 is detachably sleeved on the fourth connecting sleeve 20. The inner wall of the fourth locking sleeve 30 presses against the outer wall of the fourth connecting sleeve 20, so that the inner wall of the fourth connecting sleeve 20 presses against the side wall of the second connecting pipe 22 and presses it tightly against the oil outlet portion 1; the fourth connecting sleeve 20 has a fourth limiting groove 201, and the fourth locking sleeve 30 has a fourth limiting protrusion 301, and the fourth limiting groove 201 is connected to the fourth limiting protrusion 301; the fourth connecting sleeve 20 includes a fourth upper part 202 and a fourth lower part 203, and the fourth locking sleeve 30 presses the fourth upper part 202 against the fourth lower part 203; one end of the oil outlet portion 1 has a fourth annular groove 12, and a fourth sealing ring 121 is provided between the second connecting pipe 22 and the oil outlet portion 1, and the fourth sealing ring 121 is located in the fourth annular groove 12.Through the above structure, the connection between the second connecting pipe 22 and the straight pipe 23, the connection between the first connecting pipe 21 and the oil extraction section 3, and the connection between the second connecting pipe 22 and the oil outlet section 1 are effectively realized. Furthermore, since a second sealing ring 236 is provided between the second connecting pipe 22 and the straight pipe 23, oil leakage at the connection between the second connecting pipe 22 and the straight pipe 23 can be effectively prevented. The second sealing ring 236 is a second silicone sealing ring or a second rubber sealing ring. Furthermore, since a third sealing ring 341 is provided between the first connecting pipe 21 and the oil extraction section 3, oil leakage at the connection between the first connecting pipe 21 and the oil extraction section 3 can be effectively prevented. The third sealing ring 341 is a third silicone sealing ring or a third rubber sealing ring. Furthermore, since a fourth sealing ring 121 is provided between the second connecting pipe 22 and the oil outlet section 1, oil leakage at the connection between the second connecting pipe 22 and the oil outlet section 1 can be effectively prevented. The fourth sealing ring 121 is a fourth silicone sealing ring or a fourth rubber sealing ring.

[0044] In this embodiment, the oil outlet section 1 has an oil outlet housing 13 and an oil outlet 11 disposed on the oil outlet housing 13; it also includes an infrared liquid level sensor 6, which is connected to the oil outlet housing 13. The oil outlet 11 is disposed on the end wall of the oil outlet housing 13, and the side wall of the oil outlet housing 13 has a liquid level detection port 131. The infrared liquid level sensor 6 has an infrared sensing head 61, which is positioned facing the liquid level detection port 131. Specifically, the infrared liquid level sensor 6 includes a transparent first mounting housing 62 and an infrared sensing head 61. The first mounting housing 62 is connected to the oil outlet housing 13. The first mounting housing 62 has a first mounting opening 621, through which the infrared sensing head 61 is disposed within the first mounting housing 62. It also includes a sealing plug 63, which seals and covers the first mounting opening 621. The sealing plug 63 has a third wiring port 631, through which the infrared liquid level sensor 6 is electrically connected to the control main board 52. The sidewall of the sealing plug 63 is pressed and sealed against the sidewall of the first mounting opening 621, and the inner wall of the third wiring port 631 is used to press and seal against the outer surface of the electrical connection wire 53. With the above structure, since the infrared liquid level sensor 6 is connected to the oil outlet housing 13, when the oil outlet housing 13 is inserted into the car's fuel tank to refuel the car, the infrared liquid level sensor 6 can detect the liquid level in the fuel tank. When the liquid level in the fuel tank reaches the preset level, the control motherboard 52 controls the drive motor 33 to stop working, so that the oil outlet 11 of the oil outlet housing 13 stops discharging oil. Furthermore, since the side wall of the oil outlet housing 13 has a liquid level detection port 131 and the infrared liquid level sensor 6 has an infrared sensing head 61, with the infrared sensing head 61 facing the liquid level detection port 131, it can prevent oil in the car's fuel tank from splashing into the liquid level detection port 131, causing the infrared liquid level sensor 6 to misdetect. For example, after the oil flowing out from the oil outlet 11 enters the fuel tank, the oil in the fuel tank is easily splashed after being impacted. If the liquid level detection port 131 is located on the end wall of the oil outlet housing 13, the splashed oil will enter the liquid level detection port, causing the infrared liquid level sensor 6 to misdetect. Setting the liquid level detection port 131 on the side wall of the oil extraction housing 32 can effectively prevent such misdetection from occurring. Furthermore, since a sealing plug 63 is also included, the sealing plug 63 seals and covers the first mounting opening 621. The sealing plug 63 has a third wiring port 631, through which the infrared liquid level sensor 6 is electrically connected to the control main board 52. The sidewall of the sealing plug 63 is pressed and sealed against the sidewall of the first mounting opening 621, and the inner wall of the third wiring port 631 is used to press and seal against the outer surface of the electrical connection wire 53. This prevents oil from seeping into the first mounting housing 62 through the first mounting opening 621 and the third wiring port 631, thereby preventing the infrared sensor head 61 from short-circuiting and greatly improving the service life of the infrared liquid level sensor 6. The infrared liquid level sensor 6 is electrically connected to the control main board 52 via the electrical connection wire 53, which is connected to the infrared liquid level sensor 6 via the third wiring port 631 and the first liquid channel 2001.

[0045] In this embodiment, the oil extraction housing 32 has a mounting cavity 323, and the infrared liquid level sensor 6 is disposed within the mounting cavity 323. The sidewall of the mounting cavity 323 is provided with an elastic first clamping wall 3231 and a second clamping wall 3232. The first clamping wall 3231 and the second clamping wall 3232 surround each other to form a first clamping groove 3233. The infrared liquid level sensor 6 has a mounting protrusion 64, which is stopped by the first clamping wall 3231 and the second clamping wall 3232 within the first clamping groove 3233. This structure is reasonable and simple. The first clamping wall 3231 and the second clamping wall 3232 effectively stop the mounting protrusion 64 within the first clamping groove 3233, thus achieving the installation of the infrared liquid level sensor 6.

[0046] In this embodiment, the side wall of the control box 5 has a connecting buckle 55 and a tightening rope 56. The tightening rope 56 is connected to the connecting buckle 55 so that a tightening space 57 is formed between the tightening rope 56 and the side wall of the control box 5. The tightening space 57 is used to tighten the control box 5 and the straight pipe 23 to the mouth of the oil drum. The tightening rope 56 is an elastic tightening rope. With the above structure, the oil pump housing 32 can extend into the oil drum through the mouth of the oil drum. The tightening rope 56 tightens the control box 5 and the straight pipe 23 to the mouth of the oil drum to fix the oil pumping part 3 to the oil drum so that the oil pump can continuously draw oil from the oil drum. There are two connecting buckles 55, and the two connecting buckles are respectively connected to the two ends of the tightening rope 56.

[0047] In this embodiment, the side wall of the control box 5 also has a hanging buckle 58 and a flexible hanging rope 14. One end of the hanging rope 14 is connected to the oil outlet part 1, and the other end of the hanging rope is provided with an oil cap 141. The oil cap 141 is detachably closed to the oil outlet 11. The hanging buckle 58 is used for hanging the hanging rope 14. With the above structure, after the oil pump is used up, the oil outlet 11 can be closed by the oil cap 141 to prevent oil leakage from the oil outlet 11. In addition, the hanging rope 14 can be hung on the hanging buckle for the user to store, carry and transport the oil pump. The side wall of the oil outlet part 1 also has a rope threading port 142, and the hanging rope 14 is connected to the rope threading port 142. Specifically, the oil cap 141 is a silicone oil cap 141 or a rubber oil cap 141.

[0048] In this embodiment, the oil pipeline 2 is a transparent oil pipeline 2; or, the oil pipeline 2 is a PE oil pipeline 2 or a rubber oil pipeline 2; or, the oil pipeline 2 is a flexible oil pipeline 2. With the above structure, the transparent oil pipeline 2 allows the user to easily observe the flow of oil within it. The PE or rubber oil pipeline 2 is lighter and has a longer service life. Specifically, the flexible oil pipeline 2 allows the user to easily bend it to adjust the positions of the oil outlet section 1 and the oil extraction section 3. Furthermore, the surface of the oil pipeline 2 has multiple raised annular patterns 2011, and recessed annular grooves 2012 are formed between the raised annular patterns 2011, allowing the oil pipeline 2 to be bent along the annular grooves 2012.

[0049] In this embodiment, the width of the drive motor 33 ranges from 20mm to 22mm, and the width of the oil suction housing 32 is greater than or equal to the width of the drive motor 33, and less than or equal to 27mm. With this structure, the head of the 20mm-22mm drive motor 33 can meet the user's requirements for the oil pump. Furthermore, since the width of the oil suction housing 32 is less than or equal to 27mm, it ensures that the user can easily insert the oil suction housing 32 into most oil drums. For example, in Europe and America, the minimum diameter of the standard oil drum opening is 28mm. An oil suction housing 32 less than or equal to 27mm can easily be inserted into the opening of a standard oil drum, greatly improving the versatility of the oil pump.

[0050] In this embodiment, the control box 5 has a first charging interface 59 and a second charging interface 591, both of which are electrically connected to the battery 51. The first charging interface 59 and the second charging interface 591 are different types of charging ports; the first charging interface 59 is a first USB charging interface, and the second charging interface 591 is a second vehicle cigarette lighter charging interface. It also has a charging detection circuit 592, which is electrically connected to the control motherboard 52 and the battery 51. When the charging detection circuit 592 detects that the first charging interface 59 or the second charging interface 591 is charging the battery 51, the control motherboard 52 shuts down the drive motor 33. A boost module 593 is also provided between the drive motor 33 and the battery 51 to increase the voltage of the battery 51 and output it to the drive motor 33. The control box 5 has a switch button 594, which is electrically connected to the control motherboard 52. The control box 5 is used to start or stop the drive motor 33; it also includes a slow start circuit 595, which is electrically connected to the control motherboard 52. When the switch button 594 starts the drive motor 33, the slow start circuit 595 controls the drive motor 33 to gradually increase from the lowest speed value to the highest speed value within a preset time. The control box 5 is equipped with a power indicator 596 and a working status indicator 597. Both the power indicator 596 and the working status indicator 597 are electrically connected to the control motherboard 52 and the battery 51. The power indicator 596 is used to display the power of the battery 51, and the working status indicator 597 is used to display the working status of the drive motor 33. The control box 5 also has a handle 598; it also includes a voltage detection circuit 599. When the voltage detection circuit 599 detects that the working voltage value of the drive motor 33 is greater than the preset voltage value, the control motherboard 52 controls the drive motor 33 to stop working, and the control motherboard 52 restarts the drive motor 33 within a preset time. With the above structure, since the first charging interface 59 and the second charging interface 591 are different types of charging ports, it is convenient for users to select different charging methods to charge the oil pump. Furthermore, the inclusion of a charging detection circuit 592 prevents the oil pump from operating while charging, effectively protecting the battery 51 and the drive motor 33 and significantly extending the oil pump's lifespan. Additionally, the presence of a slow-start circuit 595 ensures that when the drive motor 33 is started by the switch button 594, the voltage of the drive motor 33 gradually increases, achieving a slow start effect. This allows the drive motor 33 to gradually increase from its lowest speed to its highest speed within a preset time. Specifically, 1-2 seconds after starting the drive motor, its speed gradually increases from 0 to 16,000 revolutions per minute. Furthermore, the control box 5 is equipped with a power indicator light 596 and a working status indicator light 597, allowing users to easily observe the oil pump's power level and working status, such as whether the oil pump is running or stopped.Furthermore, since the control box 5 is equipped with a handle 598, it is convenient for the user to pick up the control box 5 and press the switch button 594. Furthermore, since a voltage detection circuit 599 is provided, when the voltage detection circuit 599 detects that the operating voltage value of the drive motor 33 is greater than the preset voltage value, the control board 52 controls the drive motor 33 to stop working, and the control board 52 restarts the drive motor 33 within a preset time to protect the drive motor 33 and the battery 51, prevent the oil pump from burning out due to overvoltage, and restart the drive motor 33 within the preset time without requiring the user to repeatedly operate the switch button 594.

[0051] In this embodiment, the first oil extraction port 31 is disposed on the oil extraction housing 32, and also includes a first end cap 7 and a first support column 71. The first end cap 7 covers the first oil extraction port 31, and the first end cap 7 has a second oil extraction port 72 that communicates with the first oil extraction port 31. The first support column 71 has a first end 711 and a second end 712. The first end 711 of the first support column 71 is connected to the first end cap 7 and is used to support the first end cap 7. There is a gap between the second end 712 of the first support column 71 and the second oil extraction port 72. There are multiple first support columns 71, and the multiple first support columns 71 are arranged around the second oil extraction port 72. Specifically, the first end cap 7 has a second limiting ring groove 73, and the oil extraction housing 32 has a second limiting ring 322, which is located within the second limiting ring groove 73; or, the first end cap 7 has a second limiting ring 322, and the oil extraction housing 32 has a second limiting ring groove 73, which is located within the second limiting ring groove 73. With the above structure, since the first support column 71 supports the first end cap 7, there is a gap between the second end 712 of the first support column 71 and the second oil extraction port 72, allowing the first support column 71 to support both the second oil extraction port 72 and the first oil extraction port 31. This maintains a certain distance between the second oil extraction port 72 and the first oil extraction port 31 and the inner wall of the oil tank, preventing the inner wall of the oil tank from covering the second oil extraction port 72 and the first oil extraction port 31, thus allowing the oil pump to draw oil from the oil tank more smoothly.

[0052] In this embodiment, a sealing plug is also included. The sealing plug 9000 is connected to the control box, and the sealing plug can be detachably covered by the first charging interface and the second charging interface.

[0053] The above description provides one or more embodiments in conjunction with specific content, but it is not intended that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. An oil pump characterized by comprising: The utility model relates to an oil outlet part (1) has the oil outlet (11), a hollow oil pipeline (2) has the first liquid passage (2001), an oil pumping part (3) has the first oil pumping mouth (31), the oil pumping part (3) is connected with the oil outlet part (1) through the oil pipeline (2), and the oil pumping part (3), the oil pipeline (2) and the oil outlet part (1) are communicated with each other, the oil pumping part (3) has the oil pumping shell (32) and drive motor (33), the drive motor (33) is located in the oil pumping shell (32), and the drive motor (33) is connected with the oil pumping shell (32), and the drive motor (33) is used to drive oil to flow out through the first oil pumping mouth (31), the first liquid passage (2001) and the oil outlet (11) in turn. The drive motor (33) is a brushless motor, the brushless motor includes motor shell (331), stator winding part (332) and permanent magnet rotor part (333), the stator winding part (332) and permanent magnet rotor part (333) are located in the motor shell, the motor shell is provided with the protruding mounting column (3316), the stator winding part (332) is sleeved on the mounting column (3316), the stator winding part (332) includes winding mounting shell (33201) and metal winding (33202), the winding mounting shell has winding mounting groove (33203) and sleeve mouth (33204), and the winding mounting shell is sleeved on the mounting column through the sleeve mouth, and the metal winding is located in the winding mounting groove. The winding mounting shell is a plastic winding mounting shell. The motor shell (331) has a partition part (3311) that divides the motor shell (331) into a first mounting cavity (3312) and a second mounting cavity (3313), the first mounting cavity (3312) has a first opening (3314), the second mounting cavity (3313) has a second opening (3315), the stator winding part (332) is installed in the first mounting cavity (3312) through the first opening (3314), and the permanent magnet rotor part (333) is installed in the second mounting cavity (3313) through the second opening (3315). The permanent magnet rotor part (333) includes a permanent magnet rotor (3331) and an impeller (3332), the permanent magnet rotor (3331) is located in the second mounting cavity (3313) through the second opening (3315), and the impeller (3332) is connected with the permanent magnet rotor (3331), the first mounting cavity (3312) is provided with the protruding mounting column (3316), and the stator winding part (332) is sleeved on the mounting column (3316).

2. An oil pump according to claim 1, characterized in that ​ 3. An oil pump according to claim 1, wherein ​ 4. An oil pump according to claim 3, wherein ​ 5. An oil pump as claimed in claim 4, wherein Further comprising a rotor mounting shell (3333) connected with the inner side wall of the second mounting cavity, and the rotor mounting shell (3333) stops the permanent magnet rotor in the second mounting cavity.

6. An oil pump according to claim 5, wherein The rotor mounting shell (3333) has a third opening (33331), and the permanent magnet rotor (3331) further comprises a connecting shaft (33311) which passes through the third opening (33331) out of the second mounting cavity and is connected with the impeller.

7. An oil pump as claimed in claim 5, wherein The outer side wall of the rotor mounting shell (3333) has a first limiting ring (33332), the inner side wall of the second mounting cavity has a first limiting ring groove (33131), and the first limiting ring (33332) is located in the first limiting ring groove (33131); the side wall of the second mounting cavity (3313) has a slit (33132) and an elastic side wall (33133) formed between the slit (33132), and the first limiting ring groove (33131) is arranged on the elastic side wall (33133).

8. An oil pump according to claim 6, wherein The mounting column is a hollow mounting column, the stator winding part (332) is sleeved on the outer surface of the mounting column (3316), the inner surface of the mounting column has a recessed first mounting groove (33161), one end of the connecting shaft (33311) is inserted into the first mounting groove (33161), and the other end of the connecting shaft (33311) passes through the third opening (33331) out of the second mounting cavity and is connected with the impeller.

9. An oil pump as claimed in claim 8, characterised in that The first bearing sleeve (33333) is arranged between the connecting shaft (33311) and the third opening (33331), and the second bearing sleeve (33162) is arranged between the connecting shaft (33311) and the first mounting groove (33161).

10. An oil pump as claimed in claim 4, wherein Further comprising a mounting sleeve (33163) sleeved on the outer surface of the mounting column, the mounting sleeve (33163) has a first wire clamping wall (33164) and a second wire clamping wall (33165), and a wire clamping groove (33166) is formed between the first wire clamping wall (33164) and the second wire clamping wall (33165), and the first wire clamping wall (33164) and the second wire clamping wall (33165) are used to clamp the electric connecting wire (53) in the wire clamping groove (33166).

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