Fuel oil pump

Abstract

Fuel oil pump, comprising: an oil outlet section (1), wherein the oil outlet section (1) comprises an oil outlet opening (11); a hollow oil production pipe (2), the oil production pipe (2) comprising a first fluid channel (2001); an oil pumping section (3), wherein the oil pumping section (3) comprises a first oil pumping opening (31), wherein the oil pumping section (3) is connected to the oil outlet section (1) via the oil conveying pipe (2), and wherein the oil pumping section (3), the oil conveying pipe (2), and the oil outlet section (1) are connected to each other, wherein the oil pumping section (3) comprises an oil pumping housing (32) and a drive motor (33), wherein the drive motor (33) is provided within the oil pumping housing (32), and wherein the drive motor (33) is connected to the oil pumping housing (32), and wherein the drive motor (33) is used to drive the oil so that it flows sequentially through the first oil pumping opening (31), the first liquid channel (2001), and the oil outlet opening (11) and flows out of the oil outlet opening (11), wherein the drive motor (33) brushless motor, wherein the brushless motor comprises a motor housing (331),a stator winding section (332) and a permanent magnet rotor section (333), and wherein the motor housing (331) comprises a separating section (3311), wherein the separating section separates the motor housing (331) into a first mounting cavity (3312) and a second mounting cavity (3313), wherein the first mounting cavity (3312) and the second mounting cavity (3313); wherein the first mounting cavity (3312) comprises a first opening (3314), while the second mounting cavity (3313) comprises a second opening (3315), wherein the stator winding section (332) is mounted via the first opening (3314) within the first mounting cavity, while the permanent magnet rotor section (333) is mounted via the second opening (3315) within the second mounting cavity (3313); , a sealing portion (4), wherein the sealing portion (4) covers the first opening (3314) to seal the first mounting cavity (3312).

Description

TECHNICAL FIELD

[0001] The present utility model relates to the field of fuel pumps, in particular a fuel oil pump. STATE OF THE ART

[0002] Currently, the limited space in a vehicle's fuel tank means that the vehicle needs to be refueled after traveling a certain distance. However, in some relatively remote areas, the number of refueling stations is small and they are far away from gas stations. Therefore, users usually store fuel barrels containing fuel in their cars to replenish their vehicle's fuel oil at any time. However, the fuel barrels are very large, and it is difficult to fill the fuel oil directly from the fuel barrel into the vehicle's fuel tank. However, the fuel barrels are very large, and it is difficult to fill the fuel oil directly from the fuel barrel into the vehicle's fuel tank. CONTENT OF THE PRESENT UTILITY MODEL

[0003] In order to eliminate the deficiencies in the prior art, the present utility model provides a fuel oil pump comprising the following: an oil outlet portion, the oil outlet portion comprising an oil outlet opening; a hollow oil production tube, the oil production tube comprising a first fluid channel; an oil pumping section, wherein the oil pumping section comprises a first oil pumping opening, wherein the oil pumping section is connected to the oil outlet section via the oil conveying pipe, and wherein the oil pumping section, the oil conveying pipe, and the oil outlet section are connected to each other, wherein the oil pumping section comprises an oil pumping housing and a drive motor, wherein the drive motor is provided within the oil pumping housing, and wherein the drive motor is connected to the oil pumping housing, and wherein the drive motor is used to drive the oil so that it flows sequentially through the first oil pumping opening, the first fluid channel, and the oil outlet opening and flows out of the oil outlet opening, wherein the drive motor is a brushless motor, wherein the brushless motor comprises a motor housing, a stator winding section, and a permanent magnet rotor section, and wherein the motor housing comprises a separating section,wherein the separating portion separates the motor housing into a first mounting cavity and a second mounting cavity, wherein the first mounting cavity and the second mounting cavity; wherein the first mounting cavity comprises a first opening, while the second mounting cavity comprises a second opening, wherein the stator winding portion is mounted via the first opening within the first mounting cavity, while the permanent magnet rotor portion is mounted via the second opening within the second mounting cavity;, a sealing portion, wherein the sealing portion covers the first opening to seal the first mounting cavity.

[0004] The present utility model has the following advantageous effects: the present utility model provides a fuel oil pump, since the fuel oil pump comprises: an oil outlet section, wherein the oil outlet section comprises an oil outlet opening; a hollow oil conveying pipe, wherein the oil conveying pipe comprises a first fluid channel; an oil pumping section, wherein the oil pumping section comprises a first oil pumping opening, wherein the oil pumping section is connected to the oil outlet section via the oil conveying pipe, and wherein the oil pumping section, the oil conveying pipe and the oil outlet section are connected to each other, wherein the oil pumping section comprises an oil pumping housing and a drive motor, wherein the drive motor is provided within the oil pumping housing, and wherein the drive motor is connected to the oil pumping housing, and wherein the drive motor is used to drive the oil so that it successively flows through the first oil pumping opening,the first fluid channel and the oil outlet opening and flows out of the oil outlet opening, wherein the drive motor is a brushless motor, wherein the brushless motor comprises a motor housing, a stator winding section, and a permanent magnet rotor section, and wherein the motor housing comprises a separating section, wherein the separating section separates the motor housing into a first mounting cavity and a second mounting cavity, wherein the first mounting cavity and the second mounting cavity; wherein the first mounting cavity comprises a first opening, while the second mounting cavity comprises a second opening, wherein the stator winding section is mounted via the first opening within the first mounting cavity, while the permanent magnet rotor section is mounted via the second opening within the second mounting cavity; a sealing section, wherein the sealing section covers the first opening,In this way, the brushless motor can drive the oil in the fuel tank to flow sequentially through the first oil pumping port, the first fluid passage, and the oil discharge port, and from the oil discharge port into the vehicle's fuel tank to complete the vehicle's refueling. Furthermore, compared to a conventional brushed motor, the brushless motor has low operating losses and a long service life. Furthermore, the separating portion separates the motor housing into a first mounting cavity and a second mounting cavity. The permanent magnet rotor portion is mounted via the second opening within the second mounting cavity. The stator winding portion is provided within the first mounting cavity. The sealing portion covers the first opening to seal the first mounting cavity. In this way, the stator winding portion can be effectively protected.to prevent the stator winding section from being eroded by the liquid. The brushless motor further comprises a drive device and a position detection device, wherein the position detection device serves to detect the position of the permanent magnet rotor section, wherein the drive device serves to sequentially supply current to the stator winding section in a specific order according to the position of the permanent magnet rotor section, so that the magnetic field of the stator winding section always maintains an angular difference with the magnetic field of the permanent magnet rotor section, thereby generating a continuous torque to push the permanent magnet rotor section into rotation, so that the permanent magnet rotor section is rotated to drive the oil in the fuel tank so that it is sequentially pumped through the first oil pumping opening,the first fluid channel and the oil outlet port and flows from the oil outlet port into the vehicle's fuel tank. SHORT DESCRIPTION OF THE DRAWING

[0005] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the attached drawings used in the description of the embodiments are briefly described below. Of course, the attached drawings in the following description are only some of the embodiments of the present utility model, and other attached drawings can be created based on these drawings without any creative effort by those skilled in the art.

[0006] In the following, the present utility model is described in more detail in connection with the attached drawings and embodiments. Fig. 1 a schematic representation of the overall structure of the present utility model; Fig. 2 another schematic representation of the overall structure of the present utility model; Fig. 3 an exploded view of the present utility model; Fig. 4 an enlarged view at A of Fig. 3; Fig. 5 an enlarged view at B of Fig. 3; Fig. 6 an enlarged view at C of Fig. 3; Fig. 7 an enlarged view at D of Fig. 3; Fig. 8 shows another exploded view of the present utility model; Fig. 9 an enlarged view at E of Fig. 8; Fig. 10 an enlarged view at F of Fig. 8; Fig. 11 an enlarged view at G of Fig. 8; Fig. 12 is a sectional view along the oil conveying pipe, the oil pumping section and the oil discharge section; Fig. 13 an enlarged view at H of Fig. 12; Fig. 14 an enlarged view at R of Fig. 12; Fig. 15 an enlarged view at T of Fig. 12; Fig. 16 an enlarged view at L of Fig. 12; Fig. 17 an enlarged view at Y of Fig. 12; Fig. 18 an enlarged view at M of Fig. 12; Fig. 19 is another sectional view along the oil conveying pipe, the oil pumping section and the oil discharge section; Fig. 20 an enlarged view at N of Fig. 19; and Fig. 21 a schematic representation of a charge detection circuit, a slow start circuit. DETAILED DESCRIPTION

[0007] As in the Fig.1 to 21, a fuel oil pump, comprising: an oil outlet section 1, wherein the oil outlet section 1 comprises an oil outlet opening 11; a hollow oil production pipe 2, the oil production pipe 2 comprising a first fluid channel 2001; wherein the oil pumping section 3 is connected to the oil outlet section 1 via the oil conveying pipe 2, and wherein the oil pumping section 3, the oil conveying pipe 2, and the oil outlet section 1 are connected to each other, wherein the oil pumping section 3 comprises an oil pumping housing 32 and a drive motor 33, wherein the drive motor 33 is provided within the oil pumping housing 32, and wherein the drive motor 33 is connected to the oil pumping housing 32, and wherein the drive motor 33 is used to drive the oil so that it flows sequentially through the first oil pumping port 31, the first liquid channel 2001, and the oil outlet port 11 and flows out of the oil outlet port 11, wherein the drive motor 33 is a brushless motor, the brushless motor comprising a motor housing 331, a stator winding portion 332, and a permanent magnet rotor portion 333, and wherein the motor housing 331 comprises a separating section 3311,wherein the separating portion separates the motor housing 331 into a first mounting cavity 3312 and a second mounting cavity 3313, wherein the first mounting cavity 3312 and the second mounting cavity 3313; wherein the first mounting cavity 3312 includes a first opening 3314, while the second mounting cavity 3313 includes a second opening 3315, wherein the stator winding portion 332 is mounted via the first opening 3314 within the first mounting cavity, while the permanent magnet rotor portion 333 is mounted via the second opening 3315 within the second mounting cavity 3313;, a sealing portion 4, wherein the sealing portion 4 covers the first opening 3314 to seal the first mounting cavity 3312.

[0008] By the above structure, since the fuel oil pump comprises: an oil outlet portion 1, wherein the oil outlet portion 1 includes an oil outlet port 11; a hollow oil delivery pipe 2, wherein the oil delivery pipe 2 includes a first fluid passage 2001; an oil pumping section 3, wherein the oil pumping section 3 comprises a first oil pumping opening 31, wherein the oil pumping section 3 is connected to the oil outlet section 1 via the oil conveying pipe 2, and wherein the oil pumping section 3, the oil conveying pipe 2 and the oil outlet section 1 are connected to each other, wherein the oil pumping section 3 comprises an oil pumping housing 32 and a drive motor 33, wherein the drive motor 33 is provided within the oil pumping housing 32, and wherein the drive motor 33 is connected to the oil pumping housing 32, and wherein the drive motor 33 is used to drive the oil so that it is successively pumped through the first oil pumping opening 31,the first liquid channel 2001 and the oil outlet port 11 and flows out of the oil outlet port 11, wherein the drive motor 33 is a brushless motor, wherein the brushless motor includes a motor housing 331, a stator winding portion 332, and a permanent magnet rotor portion 333, and wherein the motor housing 331 includes a partition portion 3311, the partition portion separating the motor housing 331 into a first mounting cavity 3312 and a second mounting cavity 3313, wherein the first mounting cavity 3312 and the second mounting cavity 3313; wherein the first mounting cavity 3312 comprises a first opening 3314, while the second mounting cavity 3313 comprises a second opening 3315, wherein the stator winding section 332 is mounted via the first opening 3314 within the first mounting cavity,While the permanent magnet rotor section 333 is mounted via the second opening 3315 within the second mounting cavity 3313; a sealing section 4, wherein the sealing section 4 covers the first opening 3314 to seal the first mounting cavity 3312. In this way, the brushless motor can drive the oil in the fuel tank to flow sequentially through the first oil pumping port 31, the first fluid passage 2001, and the oil outlet port 11, and flow from the oil outlet port 11 into the vehicle's fuel tank to complete the refueling of the vehicle. Furthermore, the brushless motor has low loss during operation and a long service life compared to a conventional brush motor. Furthermore, the separating section 3311 separates the motor housing 331 into a first mounting cavity 3312 and a second mounting cavity 3313.The permanent magnet rotor section 333 is mounted via the second opening 3315 within the second mounting cavity 3313. The stator winding section 332 is provided within the first mounting cavity 3312. The sealing section 4 covers the first opening 3314 to seal the first mounting cavity 3312. In this way, the stator winding section 332 can be effectively protected to prevent the stator winding section 332 from being eroded by the liquid. The brushless motor further comprises a drive device 334 and a position detection device 335. The position detection device 335 serves to detect the position of the permanent magnet rotor section 333. The drive device 334 serves to sequentially supply current to the stator winding section in a specific order according to the position of the permanent magnet rotor section 333.so that the magnetic field of the stator winding portion 332 always maintains an angular difference with the magnetic field of the permanent magnet rotor portion 333, thereby generating a continuous torque to push the permanent magnet rotor portion 333 into rotation, so that the permanent magnet rotor portion 333 is rotated to drive the oil in the fuel tank so that it flows sequentially through the first oil pumping port 31, the first fluid passage 2001, and the oil outlet port 11, and flows out of the oil outlet port 11 into the fuel tank of the vehicle.

[0009] In this embodiment, the sealing portion 4 is an epoxy resin sealing portion 4, wherein the epoxy resin sealing portion 4 is formed by curing an epoxy resin after pouring it into the first opening 3314. After the electrical connection wire 53 is connected to the stator winding portion via the first opening 3314, the epoxy resin solution is poured into the first opening 3314, and the epoxy resin solution is cured to form the epoxy resin sealing portion 4, which seals the first opening 3314.

[0010] In this embodiment, the permanent magnet rotor section 333 includes a permanent magnet rotor 3331 and an impeller 3332, wherein the permanent magnet rotor 3331 is provided via the second opening 3315 within the second mounting cavity 3313, and wherein the impeller 3332 is connected to the permanent magnet rotor 3331, wherein a protruding mounting column 3316 is provided within the first mounting cavity 3312, wherein the stator winding section 332 is placed on the mounting column 3316. The fuel oil pump further comprises a rotor mounting housing 3333, wherein the rotor mounting housing 3333 is connected to an inner side wall of the second mounting cavity, and wherein the rotor mounting housing 3333 holds the permanent magnet rotor in the second mounting cavity, wherein the rotor mounting housing 3333 comprises a third opening 33331, wherein the permanent magnet rotor 3331 further comprises a connecting shaft 33311,wherein the connecting shaft is guided through the second mounting cavity via the third opening 33331 and is connected to the impeller, wherein the rotor mounting housing 3333 is provided on an outer side wall with a first limiting ring 33332, wherein the second mounting cavity is provided on an inner side wall with a first limiting ring groove 33131, and wherein the first limiting ring 33332 is located within the first limiting ring groove 33131, wherein the second mounting cavity 3313 is provided on a side wall with slots 33132 and with elastic side walls 33133 formed between the slots 33132, wherein the first limiting ring groove 33131 is provided on the elastic side wall 33133, wherein the mounting column is a hollow mounting column, wherein the stator winding section 332 is placed on an outer surface of the mounting column 3316 is,wherein the mounting column is provided on an inner surface with a recessed first mounting groove 33161, wherein one end of the connecting shaft 33311 is inserted into the first mounting groove 33161, while the other end of the connecting shaft 33311 is led out of the second mounting cavity via the third opening 33331 and connected to the impeller, wherein a first bearing sleeve 33333 is provided between the connecting shaft 33311 and the third opening 33331, while a second bearing sleeve 33162 is provided between the connecting shaft 33311 and the first mounting groove 33161, wherein the fuel oil pump further comprises a mounting sleeve 33163, wherein the mounting sleeve 33163 is placed on an outer surface of the mounting column, wherein the mounting sleeve 33163 comprises a first wire body clamping wall 33164 and a second wire body clamping wall 33165,A wire body clamping groove 33166 is formed between the first wire body clamping wall 33164 and the second wire body clamping wall 33165, and the first wire body clamping wall 33164 and the second wire body clamping wall 33165 are used to clamp the electrical connection wire 53 in the wire body clamping groove 33166. With the above structure, the position detecting device 335 serves to detect the position of the permanent magnet rotor 3331. The driving device 334 serves to sequentially supply current to the stator winding section 332 in a specific order according to the position of the permanent magnet rotor 3331, so that the magnetic field of the stator winding section 332 always maintains an angular difference with the magnetic field of the permanent magnet rotor 3331, thereby generating a continuous torque to drive the permanent magnet rotor 3331 into rotation.The permanent magnet rotor 3331 rotates the connecting shaft 33311 and the impeller 3332, and the impeller 3332 rotates the oil in the fuel tank to flow sequentially through the first oil pumping port 31, the first fluid passage 2001, and the oil outlet port 11, and flows from the oil outlet port 11 into the vehicle's fuel tank to complete the refueling of the vehicle. When the first restrictor ring 33332 needs to be installed in the first restrictor ring groove 33131, the elastic side wall 33133 is elastically expandable to facilitate the installation of the first restrictor ring 33332 in the first restrictor ring groove 33131.and after completion of the assembly, the elastic side wall 33133 resets and holds the first limiting ring 33332 in the first limiting ring groove 33131. The stator winding section 332 includes a winding mounting housing 33201 and a metal winding 33202. The winding mounting housing includes a winding mounting groove 33203 and a mounting opening 33204. The winding mounting housing is mounted on the mounting column via the mounting opening, and the metal winding is provided within the winding mounting groove. In particular, the winding mounting housing is a plastic winding mounting housing.

[0011] In this embodiment, the drive motor 33 is joined to the oil pump housing 32 by heat fusion. The drive motor 33 is provided with a protruding first rib 336 on an outer side wall, the oil pump housing 32 is provided with a first recess 321 on an inner side wall, and the first rib 336 is joined to a side wall of the first recess 321 by heat fusion; or the drive motor 33 is provided with a first recess 321 on an outer side wall, and the oil pump housing 32 is provided with a protruding first rib 336 on an inner side wall, and the first rib 336 is joined to a side wall of the first recess 321 by heat fusion.With the above structure, since the first rib 336 is heat-fused to a side wall of the first recess 321 to connect the drive motor 33 to the oil pump housing 32, not only does the connection between the drive motor 33 and the oil pump housing 32 become more stable, but also eliminates the mounting structure between the drive motor 33 and the oil pump housing 32, and can effectively reduce the size of the oil pump housing 32, making it convenient for the oil pump housing 32 to extend into the opening of the fuel barrel to pump the fuel oil into the fuel barrel. In addition, the drive motor 33 and the oil pump housing 32 are heat-fused to prevent vibration between the drive motor 33 and the oil pump housing 32, which can effectively reduce the energy loss of the drive motor 33 and improve the working efficiency of the drive motor 33.

[0012] In this embodiment, the fuel oil pump further comprises a control box 5, wherein the control box 5 comprises a rechargeable battery 51 and a control main board 52, wherein the control box 5 is connected to the oil production pipe 2, wherein the control main board 52 and the battery 51 are electrically connected to the drive motor 33, wherein the control main board 52 is used to control the operating state of the drive motor 33. The fuel oil pump further comprises an electrical connection wire 53, wherein the control main board 52 is electrically connected to the drive motor 33 via the electrical connection wire 53, and wherein the electrical connection wire 53 is electrically connected to the drive motor 33 via the first fluid channel 2001.By the above structure, since the electrical connection wire 53 electrically connects the drive motor 33 to the control main board 52 via the first fluid passage 2001, the oil discharge pipe 2 can be effectively protected from the electrical connection wire 53 compared with an exposed electrical connection wire 53, and the electrical connection wire 53 is made more uniform with the oil discharge pipe 2 to facilitate the user to use and store the fuel oil pump.

[0013] In this embodiment, the oil conveying pipe 2 comprises a first connecting pipe 21, a second connecting pipe 22, and a direct-passage pipe 23, one end of the first connecting pipe 21 being detachably connected to the oil pumping section 3, while the other end of the first connecting pipe 21 is detachably connected to one end of the direct-passage pipe 23, one end of the second connecting pipe 22 being detachably connected to the oil discharge section 1, while the other end of the second connecting pipe 22 is detachably connected to the other end of the direct-passage pipe 23. The control box 5 comprises a first through-opening 54, with the direct-passage pipe 23 being passed through the first through-opening 54. The control box 5 comprises a first housing body 501 and a second housing body 502, the first housing body 501 and the second housing body 502 being detachably connected to each other.The direct-passage pipe 23 includes a first restricting plate 237 and a second restricting plate 238, wherein an inner wall of the first housing body 501 abuts against the first restricting plate 237, while an inner wall of the second housing body 502 abuts against the second restricting plate 238 to stop the direct-passage pipe 23 in the first through-hole 54. Specifically, the direct-through tube 23 includes a first wire through-hole 231, a flexible first sealing rubber sleeve 232 is provided inside the first wire through-hole 231, the first sealing rubber sleeve 232 includes a second wire through-hole 2321, and an outer wall of the first sealing rubber sleeve 232 presses and is sealed against an inner wall of the first wire through-hole 231, and an inner wall of the second wire through-hole 2321 presses and is sealed against an outer surface of the electrical connection wire 53.The control box 5 includes a first stop wall 503, the first stop wall 503 abuts the first sealing rubber sleeve 232, and the first stop wall 503 stops the first sealing rubber sleeve 232 in the first wire through-hole 231. With the above structure, the connection between the control box 5 and the direct-through pipe 23 is effectively realized, and the electrical connection wire connects the control main board to the drive motor via the second wire through-hole and the first fluid passage. Since the first wire through-hole 231 is provided with a first sealing rubber sleeve 232, fuel oil can be prevented from entering the control box 5 via the first wire through-hole 231 and the second wire through-hole 232, thereby improving the service life and safety of the fuel oil pump.

[0014] In this embodiment, the fuel oil pump further comprises a first connecting sleeve 24 and a first locking sleeve 25, wherein the first connecting pipe 21 is fitted onto one end of the direct-passage pipe 23, wherein the first connecting sleeve 24 is detachably fitted onto the first connecting pipe 21, wherein the first locking sleeve 25 is detachably fitted onto the first connecting sleeve 24, wherein an inner side wall of the first locking sleeve 25 presses an outer side wall of the first connecting sleeve 24, so that the inner side wall of the first connecting sleeve 24 presses a side wall of the first connecting pipe 21 tightly against the direct-passage pipe 23. Here, the first connecting sleeve 24 comprises a first limiting recess 241, and the first locking sleeve 25 comprises a first limiting projection 251, wherein the first limiting recess 241 is connected to the first limiting projection 251.The first connecting sleeve 24 comprises a first upper portion 242 and a first lower portion 243, with the first locking sleeve 25 tightly pressing the first upper portion 242 against the first lower portion 243. The direct-passage pipe 23 is provided with a first annular recess 233 at one end, and a first sealing ring 234 is provided between the first connecting pipe 21 and the direct-passage pipe 23, with the first sealing ring 234 being located within the first annular recess 233. The first upper portion 242 and the first lower portion 243 are provided with a positioning protrusion 2421. The oil delivery pipe includes a positioning recess 2422, and the positioning protrusion is connected to the positioning recess.With the above structure, the connection between the first connecting pipe 21 and the direct-passage pipe 23 is effectively realized. After the first connecting pipe 21 is fitted onto the direct-passage pipe 23, the first upper portion 242 and the first lower portion 243 are fitted onto the first connecting pipe 21 so that the positioning protrusion can be connected to the positioning recess. The first upper portion 242 is tightly pressed against the first lower portion 243 by the first locking sleeve 25, so that the first upper portion 242 and the first lower portion 243 tightly press a side wall of the oil conveying pipe against the direct-passage pipe 23. Furthermore, since a first sealing ring 234 is provided between the first connecting pipe 21 and the direct-passage pipe 23, oil leakage at the junction between the first connecting pipe 21 and the direct-passage pipe 23 can be effectively prevented.The first sealing ring 234 is a first silicone sealing ring or a first rubber sealing ring.

[0015] In this embodiment, the fuel oil pump further comprises a second connecting sleeve 26 and a second locking sleeve 27, the second connecting pipe 22 being fitted onto the other end of the direct-passage pipe 23, the second connecting sleeve 26 being detachably fitted onto the second connecting pipe 22, the second locking sleeve 27 being detachably fitted onto the second connecting sleeve 26, an inner side wall of the second locking sleeve 27 pressing an outer side wall of the second connecting sleeve 26, so that the inner side wall of the second connecting sleeve 26 presses a side wall of the second connecting pipe 22 tightly against the direct-passage pipe 23.

[0016] The second connecting sleeve 26 includes a second limiting recess 261, and the second locking sleeve 27 includes a second limiting projection 251, wherein the second limiting recess 261 is connected to the second limiting projection 271. The second connecting sleeve 26 includes a second upper portion 262 and a second lower portion 263, wherein the second locking sleeve 27 presses the second upper portion 262 tightly against the second lower portion 263. The direct-passage pipe 23 is provided at the other end with a second annular recess 235, and a second sealing ring 236 is provided between the second connecting pipe 22 and the direct-passage pipe 23, wherein the second sealing ring 236 is located within the second annular recess 235.The fuel oil pump further comprises a third connecting sleeve 28 and a third locking sleeve 29, wherein the first connecting pipe 21 is fitted onto one end of the oil pumping section 3, wherein the third connecting sleeve 28 is detachably fitted onto the first connecting pipe 21, wherein the third locking sleeve 29 is detachably fitted onto the third connecting sleeve 28, wherein an inner side wall of the third locking sleeve 29 presses an outer side wall of the third connecting sleeve 28, so that the inner side wall of the third connecting sleeve 28 presses a side wall of the first connecting pipe 21 tightly against the oil pumping section 3. The third connecting sleeve 28 comprises a third limiting recess 281, and the third locking sleeve 29 comprises a third limiting projection 291, wherein the third limiting recess 281 is connected to the third limiting projection 291.The third connecting sleeve 28 comprises a third upper portion 282 and a third lower portion 283, with the third locking sleeve 29 tightly pressing the third upper portion 282 against the third lower portion 283. The oil pumping portion 3 is provided at one end with a third annular recess 34, and a third sealing ring 341 is provided between the first connecting pipe 21 and the oil pumping portion 3, with the third sealing ring 341 being located within the third annular recess 34.The fuel oil pump further comprises a fourth connecting sleeve 20 and a fourth locking sleeve 30, wherein the second connecting pipe 22 is fitted onto one end of the oil outlet section 1, wherein the fourth connecting sleeve 20 is detachably fitted onto the second connecting pipe 22, wherein the fourth locking sleeve 30 is detachably fitted onto the fourth connecting sleeve 20, wherein an inner side wall of the fourth locking sleeve 30 presses an outer side wall of the fourth connecting sleeve 20, such that the inner side wall of the fourth connecting sleeve 30 presses a side wall of the second connecting pipe 22 tightly against the oil outlet section 1. The fourth connecting sleeve 20 comprises a fourth limiting recess 201, and the fourth locking sleeve 30 comprises a third limiting projection 301, wherein the fourth limiting recess 201 is connected to the fourth limiting projection 301.The fourth connecting sleeve 20 includes a fourth upper portion 202 and a fourth lower portion 203, with the fourth locking sleeve 30 tightly pressing the fourth upper portion 202 against the fourth lower portion 203. The oil outlet portion 1 is provided with a fourth annular recess 12 at one end, and a fourth sealing ring 121 is provided between the second connecting pipe 22 and the oil outlet portion 1, with the fourth sealing ring 121 being located within the fourth annular recess 12. With the above structure, the connection between the second connecting pipe 22 and the direct-passage pipe 23, the connection between the first connecting pipe 21 and the oil pumping portion 3, and the connection between the second connecting pipe 22 and the oil outlet portion 1 are effectively realized.Furthermore, since a second sealing ring 236 is provided between the second connecting pipe 22 and the direct-passage pipe 23, oil leakage at the connection point between the second connecting pipe 22 and the direct-passage 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 pumping section 3, oil leakage at the connection point between the first connecting pipe 21 and the oil pumping 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 portion 1, oil leakage at the connection point between the second connecting pipe 22 and the oil outlet portion 1 can be effectively prevented. The fourth sealing ring 121 is a fourth silicone sealing ring or a fourth rubber sealing ring.

[0017] In this embodiment, the oil outlet section 1 comprises an oil outlet housing 13, wherein the oil outlet opening 11 is provided within the oil outlet housing 13. The fuel oil pump further comprises an infrared level sensor 6, wherein the infrared level sensor 6 is connected to the oil outlet housing 13. The oil outlet opening 11 is provided on an end wall of the oil outlet housing 13, and the oil outlet housing 13 is provided with a level detection opening 131 on a side wall. The infrared level sensor 6 comprises an infrared detection head 61, wherein the infrared detection head 61 is provided in a direction facing the level detection opening 131. In particular, the infrared level sensor 6 comprises a transparent first mounting housing 62 and an infrared detection head 61, wherein the first mounting housing 62 is connected to the oil outlet housing 13, wherein the first mounting housing 62 comprises a first mounting opening 621.The infrared detection head 61 is provided via the first mounting hole 621 within the first mounting housing 62. The fuel oil pump further comprises a sealing plug 63, the sealing plug 63 tightly covering the first mounting hole 621. The sealing plug 63 includes a third wire through-hole 631. The infrared level sensor 6 is electrically connected to the control main board 52 via the third wire through-hole 631. A side wall of the sealing plug 63 presses against a side wall of the first mounting hole 621 and is sealed thereto, and an inner wall of the third wire through-hole 631 presses against an outer surface of the electrical connection wire 53 and is sealed thereto. With the above structure, the infrared level sensor 6 is connected to the oil outlet housing 13, so that the infrared level sensor 6 can detect the fuel level in the fuel tank.When the oil outlet casing 13 is extended into the vehicle's fuel tank for refueling the vehicle, and when the detected liquid level in the fuel tank reaches the predetermined value, the control main board 52 controls the drive motor 33 to stop operation so that the oil outlet port 11 of the oil outlet casing 13 stops supplying oil. Furthermore, since the side wall of the oil outlet casing 13 includes a level detection port 131 and the infrared level sensor 6 includes an infrared detection head 61, and the infrared detection head 61 is provided in a direction facing the level detection port 131, the fuel oil in the vehicle's fuel tank can be prevented from splashing into the level detection port 131, which causes the infrared level sensor 6 to incorrectly detect the level. For example, after the fuel oil flowing from the oil outlet port 11 enters the fuel tank, the fuel oil in the fuel tank tends toAfter impact, the fuel oil is likely to splash, and if the level detection hole 131 is provided on an end wall of the oil outlet housing 13, the splashed fuel oil will shoot into the level detection hole, resulting in misdetection of the infrared level sensor 6. Providing the level detection hole 131 on the side wall of the oil pump housing 32 effectively prevents such misdetection from occurring. Furthermore, since the fuel oil pump further includes a sealing plug 63, the sealing plug 63 tightly covering the first mounting hole 621, the sealing plug 63 including a third wire through hole 631, the infrared level sensor 6 being electrically connected to the control main board 52 via the third wire through hole 631, and a side wall of the sealing plug 63 pressing against a side wall of the first mounting hole 621 and sealing thereto,and an inner wall of the third wire through-hole 631 presses against and seals against an outer surface of the electrical connection wire 53. This prevents fuel oil from entering the first mounting case 62 via the first mounting hole 621 and the third wire through-hole 631, thereby preventing a short circuit of the infrared detection head 61 and significantly improving the service life of the infrared level sensor 6. The infrared level sensor 6 is electrically connected to the control main board 52 via the electrical connection wire 53, and the electrical connection wire 53 is electrically connected to the infrared level sensor 6 via the third wire through-hole 631 and the first fluid channel 2001.

[0018] In this embodiment, the oil pump housing 32 includes a mounting cavity 323, the infrared level sensor 6 is provided within the mounting cavity 323, and a side wall of the mounting cavity 323 is provided with an elastic first clamping wall 3231 and a second clamping wall 3232. A first clamping groove 3233 is formed between the first clamping wall 3231 and the second clamping wall 3232, the infrared level sensor 6 includes a mounting projection 64, and the first clamping wall 3231 and the second clamping wall 3232 hold the mounting projection 64 in the first clamping groove 3233. Through the above structure, the design is reasonable, the structure is simple, and the first clamping wall 3231 and the second clamping wall 3232 stop the mounting projection 64 in the first clamping groove 3233, thereby effectively realizing the installation of the infrared level sensor 6.

[0019] In this embodiment, the control box 5 is provided with a connecting closure 55 on a side wall and further includes a bundling rope 56. The bundling rope 56 is connected to the connecting closure 55 so that a bundling space 57 is formed between the bundling rope 56 and the side wall of the control box 5. The bundling space 57 serves to bundle the control box 5 and the direct-passage pipe 23 at the opening of the fuel tank. Here, the bundling rope 56 is an elastic bundling rope 56. With the above structure, the oil pump housing 32 can extend into the fuel barrel through the opening of the fuel barrel, and the bundling rope 56 bundles the control box 5 and the direct-passage pipe 23 at the opening of the fuel barrel to fix the oil pumping section 3 to the fuel barrel, so that the fuel oil pump can continuously pump the fuel oil in the fuel barrel.The number of connecting closures 55 is two, and the two connecting closures are each connected to the two ends of the bundling rope 56.

[0020] In this embodiment, the control box 5 is further provided on the side wall with a hanging closure 58 and a flexible hanging rope 14, one end of which is connected to the oil outlet portion 1, while the hanging rope 14 is provided at the other end with an oil cover 141, the oil cover 141 detachably covering the oil outlet opening 11, and the hanging closure 58 serves to hang the hanging rope 14. With the above structure, the oil outlet opening 11 can be covered by the oil cover 141 after use of the fuel oil pump to prevent fuel oil from leaking from the oil outlet opening 11. Furthermore, the hanging rope 14 can be hung on the hanging closure to facilitate the user's storage, carrying, and transportation of the fuel oil pump.The oil outlet portion 1 is further provided with a rope hole 142 on a side wall, and the suspension rope 14 is connected to the rope hole 142. Specifically, the oil cover 141 is a silicone oil cover 141 or a rubber oil cover 141.

[0021] In this embodiment, the oil extraction pipe 2 is a transparent oil extraction pipe 2; or the oil extraction pipe 2 is a PE oil extraction pipe 2 or a rubber oil extraction pipe 2; or the oil extraction pipe 2 is a flexible oil extraction pipe 2. With the above structure, the transparent oil extraction pipe 2 can facilitate the user's observation of the oil flow in the oil extraction pipe 2. The PE oil extraction pipe 2 or the rubber oil extraction pipe 2 are lighter in weight and have a longer service life. The flexible oil extraction pipe 2 can be easily bent by the user to adjust the position of the oil outlet section 1 and the oil pumping section 3. Further, the oil extraction pipe 2 is provided with a plurality of protruding annular strips 2011 on the surface, and concave annular recesses 2012 are formed between the plurality of protruding annular strips 2011, and the oil extraction pipe 2 can be bent along the annular recesses 2012.

[0022] In this embodiment, the width of the drive motor 33 ranges from 20mm to 22mm, the width of the oil pump housing 32 is greater than or equal to the width of the drive motor 33, and the width of the oil pump housing 32 is less than or equal to 27mm. With the above structure, the stroke range of the drive motor 33 from 20mm to 22mm can meet the user's requirements for the use of the fuel oil pump. Since the width of the oil pump housing 32 is less than or equal to 27mm, it can ensure that the user can fill the oil pump housing 32 into most fuel barrels. For example, in Europe and the United States, the minimum caliber of the opening of a standard fuel barrel is 28mm, and the oil pump housing 32 with a width of less than or equal to 27mm can be easily inserted into the opening of a standard fuel barrel, greatly improving the versatility of the oil pump.

[0023] In this embodiment, the control box 5 includes a first charging interface 59 and a second charging interface 591. The first charging interface 59 and the second charging interface 591 are electrically connected to the battery 51, and 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 charging interface for a vehicle's cigarette lighter. The control box further includes a charging detection circuit 592. The charging detection circuit 592 is electrically connected to the control main board 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 main board 52 turns off the drive motor 33.A booster module 593 is further provided between the drive motor 33 and the battery 51, and the booster module 593 is used to boost the voltage of the battery 51 and output it to the drive motor 33. The control box 5 is provided with a switch button 594. The switch button 594 is electrically connected to the control main board 52, and the switch button 594 is used to turn the drive motor 33 on or off. The control box further includes a slow start circuit 595. The slow start circuit 595 is electrically connected to the control main board 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 a minimum speed value to a maximum speed value within a predetermined time.The control box 5 is provided with a power indicator lamp 596 and an operating state indicator lamp 597. The power indicator lamp 596 and the operating state indicator lamp 597 are electrically connected to the control main board 52 and the battery 51. The power indicator lamp 596 is used to indicate the power level of the battery 51, and the operating state indicator lamp 597 is used to indicate the operating state of the drive motor 33. The control box 5 also has a carrying handle 598. The control box further includes a voltage detection circuit 599. When the voltage detection circuit 599 detects that the operating voltage value of the drive motor 33 is greater than a predetermined voltage value, the control main board 52 controls the drive motor 33 to stop operation, and the control main board 52 restarts the drive motor 33 within a predetermined 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 the user to select different charging methods for charging the fuel oil pump. In addition, since the charge detection circuit 592 is provided, the fuel oil pump can be prevented from operating during charging, thereby effectively protecting the battery 51 and the drive motor 33 and greatly extending the service life of the fuel oil pump. Furthermore, when the switch button 594 starts the drive motor 33, the slow start circuit 595 controls the voltage of the drive motor 33 to gradually increase to achieve the effect of a slow start, so that the drive motor 33 can gradually increase from the lowest speed value to the highest speed value within a predetermined time due to the slow start circuit 595.Specifically, after the drive motor is started, the speed of the drive motor 33 is gradually increased from 0 to 16,000 rpm for 1-2 seconds. Since the control box 5 is equipped with a power indicator lamp 596 and an operating status indicator lamp 597, it is convenient for the user to observe the power level and operating status of the fuel oil pump, for example, to determine whether the fuel oil pump is started or stopped. Since the control box 5 is equipped with a carrying handle 598, it is convenient for the user to pick up the control box 5 and press the switch button 594.When the voltage detection circuit 599 detects that the operating voltage value of the drive motor 33 is greater than a predetermined voltage value, the control main board 52 controls the drive motor 33 to stop operating because of the voltage detection circuit 599, and the control main board 52 restarts the drive motor 33 within a predetermined time to protect the drive motor 33 and the battery 51 to prevent the fuel oil pump from burning out due to overvoltage, and restarts the drive motor 33 within the predetermined time without the user having to repeatedly operate the switch button 594.

[0024] In this embodiment, the first oil pumping port 31 is provided within the oil pump housing 32 and further includes a first end cover 7 and a first support column 71, wherein the first end cover 7 is covered with the first oil pumping port 31, and the first end cover 7 includes a second oil pumping port 72 connected to the first oil pumping 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, the first support column 71 serves to support the first end cap 7, and a gap is formed between the second end 712 of the first support column 71 and the second suction port 72. Here, the number of first support columns 71 is a plurality, and the plurality of first support columns 71 are provided around the second oil pumping port 72.Specifically, the first end cover 7 includes a second restrictor ring groove 73, the oil pump housing 32 includes a second restrictor ring 322, and the second restrictor ring 322 is provided within the second restrictor ring groove 73; or, the first end cover 7 includes a second restrictor ring 322, the oil pump housing 32 includes a second restrictor ring groove 73, and the second restrictor ring 322 is provided within the second restrictor ring groove 73. By the above structure, since the first support column 71 serves to support the first end cover 7, a distance is formed between the second end 712 of the first support column 71 and the second oil pumping hole 72 so that the first support column 71 supports the second oil pumping hole 72 and the first oil pumping hole 31 to maintain a certain distance between the second oil pumping hole 72 and the first oil pumping hole 31 and the inner wall of the fuel barrel.The inner wall of the fuel barrel is prevented from covering the second oil pumping port 72 and the first oil pumping port 31, so that the fuel oil pump can pump the oil in the fuel barrel more evenly.

[0025] In this embodiment, the fuel oil pump further includes a sealing plug, the sealing plug 9000 is connected to the control box, and the sealing plug detachably covers the first charging interface and the second charging interface.

[0026] The above embodiments are one or more embodiments provided in combination with the specific content, and it is not stipulated that the specific implementation of the present utility model is limited to these descriptions. Any method, structure, etc. that is similar or similar to the present utility model, or that makes a series of technical deductions or substitutions based on the conceptual premise of the present utility model, should be considered within the scope of protection of the present utility model.

Claims

[1] Fuel oil pump, comprising: an oil outlet section (1), wherein the oil outlet section (1) comprises an oil outlet opening (11); a hollow oil production pipe (2), the oil production pipe (2) comprising a first fluid channel (2001); an oil pumping section (3), wherein the oil pumping section (3) comprises a first oil pumping opening (31), wherein the oil pumping section (3) is connected to the oil outlet section (1) via the oil conveying pipe (2), and wherein the oil pumping section (3), the oil conveying pipe (2), and the oil outlet section (1) are connected to each other, wherein the oil pumping section (3) comprises an oil pumping housing (32) and a drive motor (33), wherein the drive motor (33) is provided within the oil pumping housing (32), and wherein the drive motor (33) is connected to the oil pumping housing (32), and wherein the drive motor (33) is used to drive the oil so that it flows sequentially through the first oil pumping opening (31), the first liquid channel (2001), and the oil outlet opening (11) and flows out of the oil outlet opening (11), wherein the drive motor (33) brushless motor, wherein the brushless motor comprises a motor housing (331),a stator winding section (332) and a permanent magnet rotor section (333), and wherein the motor housing (331) comprises a separating section (3311), wherein the separating section separates the motor housing (331) into a first mounting cavity (3312) and a second mounting cavity (3313), wherein the first mounting cavity (3312) and the second mounting cavity (3313); wherein the first mounting cavity (3312) comprises a first opening (3314), while the second mounting cavity (3313) comprises a second opening (3315), wherein the stator winding section (332) is mounted via the first opening (3314) within the first mounting cavity, while the permanent magnet rotor section (333) is mounted via the second opening (3315) within the second mounting cavity (3313); a sealing portion (4), wherein the sealing portion (4) covers the first opening (3314) to seal the first mounting cavity (3312). [2] The fuel oil pump according to claim 1, wherein the sealing portion (4) is an epoxy resin sealing portion (4); wherein the epoxy resin sealing portion (4) is formed by curing an epoxy resin after pouring into the first opening (3314). [3] The fuel oil pump according to claim 1, wherein the permanent magnet rotor portion (333) comprises a permanent magnet rotor (3331) and an impeller (3332), wherein the permanent magnet rotor (3331) is provided via the second opening (3315) within the second mounting cavity (3313), and wherein the impeller (3332) is connected to the permanent magnet rotor (3331), wherein a protruding mounting column (3316) is provided within the first mounting cavity (3312), wherein the stator winding portion (332) is mounted on the mounting column (3316), wherein the stator winding portion (332) comprises a winding mounting housing (33201) and a metal winding (33202), wherein the winding mounting housing comprises a winding mounting groove (33203) and a mounting opening (33204), wherein the The winding mounting housing is placed on the mounting column via the mounting opening, and the metal winding is provided within the winding mounting groove. [4] The fuel oil pump according to claim 3, further comprising a rotor mounting housing (3333), the rotor mounting housing (3333) being connected to an inner side wall of the second mounting cavity, and the rotor mounting housing (3333) holding the permanent magnet rotor in the second mounting cavity, the rotor mounting housing (3333) comprising a third opening (33331), the permanent magnet rotor (3331) further comprising a connecting shaft (33311), the connecting shaft being passed through the second mounting cavity via the third opening (33331) and being connected to the impeller, the rotor mounting housing (3333) being provided on an outer side wall with a first restricting ring (33332), the second mounting cavity being provided on an inner side wall with a first restricting ring groove (33131), and the first restricting ring (33332) being located within the first Limit ring groove (33131),wherein the second mounting cavity (3313) is provided on a side wall with slots (33132) and with elastic side walls (33133) formed between the slots (33132), wherein the first limiting ring groove (33131) is provided on the elastic side wall (33133), wherein the mounting column is a hollow mounting column, wherein the stator winding section (332) is placed on an outer surface of the mounting column (3316), wherein the mounting column is provided on an inner surface with a recessed first mounting groove (33161), wherein one end of the connecting shaft (33311) is inserted into the first mounting groove (33161), while the other end of the connecting shaft (33311) is led out of the second mounting cavity via the third opening (33331) and is connected to the impeller, wherein a first bearing sleeve (33333) is provided between the connecting shaft (33311) and the third opening (33331),while a second bearing sleeve (33162) is provided between the connecting shaft (33311) and the first mounting groove (33161), wherein the fuel oil pump further comprises a mounting sleeve (33163), wherein the mounting sleeve (33163) is placed on an outer surface of the mounting column, wherein the mounting sleeve (33163) comprises a first wire body clamping wall (33164) and a second wire body clamping wall (33165), wherein a wire body clamping groove (33166) is formed between the first wire body clamping wall (33164) and the second wire body clamping wall (33165), and wherein the first wire body clamping wall (33164) and the second wire body clamping wall (33165) are used to clamp the electrical connecting wire (53) in the wire body clamping groove (33166). [5] A fuel oil pump according to claim 1, wherein the drive motor (33) is connected to the oil pump housing (32) by heat fusion. [6] The fuel oil pump according to claim 5, wherein the drive motor (33) is provided with a protruding first rib (336) on an outer side wall, the oil pump housing (32) is provided with a first recess (321) on an inner side wall, and the first rib (336) is joined to a side wall of the first recess (321) by heat fusion; or wherein the drive motor (33) is provided with a first recess (321) on an outer side wall, the oil pump housing (32) is provided with a protruding first rib (336) on an inner side wall, the first rib (336) being joined to a side wall of the first recess (321) by heat fusion. [7] A fuel oil pump according to claim 1, further comprising a control box (5), the control box (5) comprising a rechargeable battery (51) and a control main board (52), the control box (5) being connected to the oil delivery pipe (2), the control main board (52) and the battery (51) being electrically connected to the drive motor (33), the control main board (52) being used to control the operating state of the drive motor (33). [8] The fuel oil pump according to claim 7, further comprising an electrical connection wire (53), wherein the control main board (52) is electrically connected to the drive motor (33) via the electrical connection wire (53), and wherein the electrical connection wire (53) is electrically connected to the drive motor (33) via the first fluid passage (2001). [9] The fuel oil pump according to claim 7, wherein the oil delivery pipe (2) comprises a first connecting pipe (21), a second connecting pipe (22), and a direct-passage pipe (23), one end of the first connecting pipe (21) being detachably connected to the oil pumping section (3), while the other end of the first connecting pipe (21) is detachably connected to one end of the direct-passage pipe (23), one end of the second connecting pipe (22) being detachably connected to the oil discharge section (1), while the other end of the second connecting pipe (22) is detachably connected to the other end of the direct-passage pipe (23); wherein the control box (5) comprises a first through-hole (54), the direct-passage pipe (23) being passed through the first through-hole (54), the control box (5) comprising a first housing body (501) and a second housing body (502).wherein the first housing body (501) and the second housing body (502) are detachably connected to each other, and wherein the direct-passage tube (23) comprises a first limiting plate (237) and a second limiting plate (238), wherein an inner wall of the first housing body (501) abuts against the first limiting plate (237), while an inner wall of the second housing body (502) abuts against the second limiting plate (238) to stop the direct-passage tube (23) in the first through-hole (54), wherein the direct-passage tube (23) comprises a first wire through-hole (231), wherein a flexible first sealing rubber sleeve (232) is provided within the first wire through-hole (231), wherein the first sealing rubber sleeve (232) comprises a second wire through-hole (2321), and wherein an outer wall of the first sealing rubber sleeve (232) surrounds an inner wall of the first Wire passage opening (231) and is sealed thereto,wherein the electrical connection wire electrically connects the control main board to the drive motor via the second wire through-hole and the first fluid channel, wherein an inner wall of the second wire through-hole (2321) presses an outer surface of the electrical connection wire (53) and is sealed thereto, wherein the fuel oil pump further comprises a first connection sleeve (24) and a first locking sleeve (25), wherein the first connection pipe (21) is fitted onto one end of the direct-through pipe (23), wherein the first connection sleeve (24) is detachably fitted onto the first connection pipe (21), wherein the first locking sleeve (25) is detachably fitted onto the first connection sleeve (24), wherein an inner side wall of the first locking sleeve (25) presses an outer side wall of the first connection sleeve (24),such that the inner side wall of the first connecting sleeve (24) presses a side wall of the first connecting pipe (21) tightly against the direct-through pipe (23), wherein the first connecting sleeve (24) comprises a first limiting recess (241), wherein the first locking sleeve (25) comprises a first limiting projection (251), wherein the first limiting recess (241) is connected to the first limiting projection (251), wherein the first connecting sleeve (24) comprises a first upper section (242) and a first lower section (243), wherein the first locking sleeve (25) presses the first upper section (242) tightly against the first lower section (243), wherein the direct-through pipe (23) is provided at one end with a first annular recess (233), wherein a first sealing ring (234) is provided between the first connecting pipe (21) and the direct-through pipe (23) is,wherein the first sealing ring (234) is located within the first annular recess (233), wherein the control box (5) is provided on a side wall with a connection closure (55) and further comprises a bundling rope (56), wherein the bundling rope (56) is connected to the connection closure (55) so that a bundling space (57) is formed between the bundling rope (56) and the side wall of the control box (5), wherein the bundling space (57) serves to bundle the control box (5) and the direct-through pipe (23) at the opening of the fuel tank, wherein the control box (5) is further provided on the side wall with a suspension closure (58) and a flexible suspension rope (14), wherein one end of the suspension rope (14) is connected to the oil outlet section (1), while the suspension rope (14) is provided at the other end with an oil cover (141), wherein the oil cover (141) removably covers the oil outlet opening (11),wherein the suspension closure (58) serves to suspend the suspension rope (14)., [10] A fuel oil pump according to claim 1, wherein the oil outlet section (1) comprises an oil outlet housing (13), wherein the oil outlet opening (11) is provided within the oil outlet housing (13), wherein the fuel oil pump further comprises an infrared level sensor (6), wherein the infrared level sensor (6) is connected to the oil outlet housing (13), wherein the oil outlet opening (11) is provided on an end wall of the oil outlet housing (13), wherein the oil outlet housing (13) is provided on a side wall with a level detection opening (131), and wherein the infrared level sensor (6) comprises an infrared detection head (61), wherein the infrared detection head (61) is provided in a direction facing the level detection opening (131), wherein the infrared level sensor (6) comprises a transparent first mounting housing (62) and an infrared detection head (61), wherein the first mounting housing (62) is connected to the oil outlet housing (13),wherein the first mounting housing (62) comprises a first mounting opening (621), wherein the infrared sensing head (61) is provided via the first mounting opening (621) within the first mounting housing (62), wherein the fuel oil pump further comprises a sealing plug (63), wherein the sealing plug (63) tightly covers the first mounting opening (621), wherein the sealing plug (63) comprises a third wire through-hole (631), wherein the infrared level sensor (6) is electrically connected to the control main board (52) via the third wire through-hole (631), wherein a side wall of the sealing plug (63) presses a side wall of the first mounting opening (621) and is sealed thereto, and wherein an inner wall of the third wire through-hole (631) presses an outer surface of the electrical connection wire (53) and is sealed thereto.

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