Loss prevention type efficient built-in brushless oil pump and using method

Abstract

The invention discloses an anti-damage efficient built-in brushless oil pump and a using method, and relates to the technical field of built-in brushless pumps, the anti-damage efficient built-in brushless oil pump comprises an outer shell, a pump head inner shell is fixedly connected to the inner wall of the left end of the outer shell, and a brushless motor driving module is arranged on the right side of the pump head inner shell; and the outer wall of the right side of the brushless motor driving module is fixedly connected with the inner wall of the outer shell, and the output end of the left side of the brushless motor driving module penetrates through the pump head inner shell and extends to the left side of the pump head inner shell. The internal working pressure of the shell can be detected in real time and compared with power consumption in the operation process of the brushless motor driving module, and the operation state of an oil pump and whether abnormity such as blockage of an oil inlet pipe exists or not can be judged by setting historical power consumption ratio and peak pressure comparison logic; the method has the advantages of being high in practicability and capable of avoiding damage or system misjudgment caused by blockage of the pump.

Description

Technical Field

[0001] The present invention relates to the technical field of built-in brushless pumps, and specifically to a damage-proof and efficient built-in brushless oil pump and its usage method. Background Art

[0002] Existing gasoline pump devices are widely used in the fuel delivery systems of motor vehicles. In particular, built-in gasoline pumps are widely adopted due to their compact structure and convenient installation. However, traditional gasoline pumps have multiple technical problems during long-term operation, mainly including weak fault warning ability and easy blockage of the filtering device, resulting in attenuation of pump body performance, shortened service life, and increased maintenance costs. In addition, some devices lack effective monitoring and control means when the oil circuit is blocked or the pressure inside the pump is abnormal, easily causing the pump body to operate overloaded or be damaged abnormally, seriously affecting the stability and safety of the fuel system.

[0003] Especially in the context of the continuous improvement of modern automobiles' requirements for energy conservation, reliability, and intelligent monitoring, how to monitor the operating state of the oil pump in real time and intelligently adjust the operating parameters of the motor has become the focus of technical research. At the same time, there is an existing oil pressure control system with the publication number: CN113464427B. This device mainly focuses on the situation where the electric oil pump is difficult to start under low oil temperature or abnormal voltage; This scheme uses an oil temperature sensor + a voltage sensor to detect the working environment of the oil pump, and adjusts the output of the power adjustment unit (such as a generator or a DC-DC converter) according to the determination result to ensure that the oil pump operates within the stable working area R3; Its goal is: in electric vehicles or hybrid vehicles, to maintain the oil pump starting in a stable area and avoid stalling.

[0004] However, during its use, it is unable to make targeted judgments on the aging, blockage, etc. of the pump body itself. Therefore, when the pump body itself is blocked or aged, resulting in an increase in the load of the oil pump and the electric oil pump being difficult to start, this application will make misjudgments and adopt wrong strategies, which may then lead to overloading and damage of the oil pump.

[0005] Therefore, there is an urgent need for a damage-proof and efficient energy-saving built-in brushless gasoline pump system with self-adaptive state monitoring ability, perfect cleaning function, energy-efficient operation, and fault prevention function to meet the comprehensive requirements of modern fuel pump structure optimization, performance improvement, and intelligent control. Summary of the Invention

[0006] The purpose of the present invention is to provide a damage-proof and efficient built-in brushless oil pump and its usage method to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the present invention provides the following technical solution: an anti-loss type high-efficiency built-in brushless oil pump and its usage method, including a housing. The left inner wall of the housing is fixedly connected with an inner pump head housing. On the right side of the inner pump head housing, there is a brushless motor drive module. The outer wall of the right side of the brushless motor drive module is fixedly connected with the inner wall of the housing. The left output end of the brushless motor drive module penetrates through the inner pump head housing and extends to the left side of the inner pump head housing. On the left outer wall of the output end of the brushless motor drive module, there is an impeller. On the left side of the inner pump head housing, there is a pump head outer housing. The outer wall of the pump head outer housing is fixedly connected with the inner wall of the housing. On the left side of the pump head outer housing, there is an oil inlet pipe. On the right side of the housing, there is an oil discharge pipe. On the upper right side of the housing, there is an anti-loss mechanism. On the left outer part of the oil inlet pipe, there is an anti-blocking mechanism. By setting up the anti-loss mechanism, dynamic detection of the motor working state and system pressure is realized to predict faults and avoid overload risks. By setting up the anti-blocking mechanism, the anti-impurity interference ability of the oil inlet is improved, and the stable operation period of the system is effectively extended. The anti-loss mechanism includes a control module and a detection component; The control module is arranged on the right side of the housing, and the outer wall of the control module is fixedly connected with the outer wall of the housing. The control module includes a processing module, a control module, a memory module, and a transmission module. By setting up the processing module, the control module, the memory module, and the transmission module, rapid processing of operation data, accurate issuance of control instructions, persistent storage of historical data, and remote signal transmission can be realized, providing support for the intelligent operation of the system. The brushless motor drive module is electrically connected to the control module. The control module can monitor and record the operating power of the brushless motor drive module. By setting up the control module and the detection component, multi-dimensional real-time monitoring and data recording of the oil pump operating state can be realized, providing a basic support for judging the aging of the oil pump. By the control module monitoring the power of the brushless motor drive module under various pressure environments, potential mechanical jamming, impeller blockage and other problems can be identified by combining historical power consumption fluctuations, and timely feedback to the control logic to execute protection strategies. The anti-blocking mechanism includes a connection component and a rotating ring on the connection component; The rotating ring is arranged on the left side of the oil inlet pipe. On the outer side of the rotating ring, there is a cleaning mechanism. The rotating ring can rotate relative to the oil inlet pipe.

[0008] According to the above technical solution, the detection component includes a fixed cylinder. The lower end of the fixed cylinder is fixedly connected to the upper right part of the housing. The inside of the fixed cylinder is communicated with the right inner cavity of the housing. A pressure gauge is inserted into the fixed cylinder. The outer wall of the pressure gauge is fixedly connected to a first spring. The upper end of the first spring is fixedly connected to the inner wall of the fixed cylinder. By providing the fixed cylinder and the plug-in pressure gauge, real-time pressure detection of the right outlet cavity of the oil pump can be achieved, and the free stroke of the pressure gauge is limited by the first spring, improving the stability and repeatability of the detection response.

[0009] According to the above technical solution, the inside of the fixed cylinder is a hollow structure, and the pressure gauge can move up and down relative to the fixed cylinder. The inner wall of the fixed cylinder can limit the movement stroke of the pressure gauge. The lower end of the pressure gauge extends into the housing. By adopting the structural design of the pressure gauge sliding up and down, it helps the pressure gauge to drop under instantaneous impact pressure.

[0010] According to the above technical solution, the connection component includes a fixed ring. The right inner wall of the fixed ring contacts the outer wall of the inlet pipe. A tightening hoop is provided on the outer wall of the fixed ring. The left end of the fixed ring is connected to the right side of a rotating ring through a clockwork spring. A fixed sleeve is provided on the left side of the inlet pipe. The right side of the fixed sleeve contacts the left outer wall of the inlet pipe. Five support feet are fixedly connected to the inner wall of the fixed sleeve. The right ends of the support feet extend into the inlet pipe, and the outer walls of the support feet contact the inner wall of the inlet pipe. A filter screen is fixedly connected to the inner wall of the fixed sleeve. By providing the fixed ring and the tightening hoop, the rotational stability of the rotating ring is improved. By connecting the rotating ring through a clockwork spring, a self-driven cleaning power structure is formed. By providing five support feet to support the filter screen circumferentially, the structural stability of the filter screen is improved and the filter screen is prevented from shifting.

[0011] According to the above technical solution, the support feet are made of elastic metal structures. When the support feet are moved out of the inlet pipe, they can rebound outward. And the fixed sleeve is located outside the inlet pipe. By providing elastic metal support feet, it is beneficial for quick disassembly, installation and maintenance. The external fixed sleeve structure facilitates the overall replacement and maintenance of the filter screen, improving the maintainability of the whole machine.

[0012] According to the above technical solution, the cleaning mechanism includes a bracket, one end of the bracket is fixedly connected to the inner wall of the swivel, and the other end of the bracket is fixedly connected to a cleaning brush, one side of the outer wall of the cleaning brush contacts the left side of the outer wall of the filter screen, the outer wall of the swivel is fixedly connected to an insert sleeve, the outer wall of the swivel is located inside the insert sleeve and is fixedly connected to a second spring, and the outer wall of the insert sleeve is fixedly connected to two pressure relief pipes, the side wall of the swivel is provided with a socket, the inside of the socket is plugged with a plug plate, one side of the plug plate is fixedly connected to a plug rod, one end of the plug rod is plugged into the inside of the insert sleeve, and the end of the plug rod located inside the insert sleeve is fixedly connected to the outer wall of the second spring, and a structural driving closed loop is formed by combining the cleaning mechanism, the insert sleeve and the second spring to ensure that the cleaning action of the brush head is controllable and returns to its original position, and the internal pressure of the insert sleeve is released through the pressure relief pipe and the elastic film.

[0013] According to the above technical solution, the plug plate is an inclined plate-shaped structure, and the second spring is normally located outside the inner ring of the swivel. When the second spring contracts, one side of the plug plate can move to the inside of the inner ring of the swivel.

[0014] According to the above technical solution, both ends of the second spring are electrically connected to the brushless motor drive module, the insertion rod can move relative to the insertion tube, and an elastic film is provided on the inner wall of the pressure relief tube.

[0015] A method for using a loss-proof, high-efficiency, internal brushless oil pump comprises the following steps: Step 1: Place the gasoline pump in the fuel tank, connect it to an external power supply, connect the oil drain pipe to the external pipeline, start the brushless motor drive module and open the right pipeline of the oil drain pipe, so that the brushless motor drive module drives the impeller to rotate, and the oil sucked into the oil inlet pipe is transported to the right side through the inside of the shell to the oil drain pipe for discharge, thus realizing the oil pumping operation, and taking away the heat generated during the operation of the equipment with the help of the oil flow to reduce the temperature rise; Step 2: During the oil pumping process, the pressure P(t) inside the housing is detected in real time by a pressure gauge, and the current power W(t) of the brushless motor drive module is synchronously recorded by the control module to calculate the unit pressure power consumption ratio η(t) = W(t) / P(t), and its change trend is monitored. When the change rate Δη of η(t) is continuously negative and the duration exceeds the preset threshold ΔT, it is determined that the equipment has an aging trend, and the control module sends a warning signal to the external control terminal; Step 3: At the instant when the fuel pumping ends, at time point ts, the solenoid valve connected to the drain pipe closes, triggering a water hammer effect. The instantaneous peak pressure P_peak = P(ts) is recorded by the pressure gauge. The control module compares it with the historical average peak pressure P_avg. If Delta_P = P_avg - P_peak > delta, and the average power consumption per unit time of the brushless motor drive module continues to be higher than the power consumption threshold W_threshold, it is determined that there is a risk of blockage on the left side of the inlet pipe, and an alarm is triggered to prompt cleaning and maintenance; Step 4: At the instant when the fuel pumping ends, the pressure gauge moves upward under the impact of the water hammer, compresses the first spring, and then rebounds and resets. This reset process drives part of the oil body to flow back and drain out through the inlet pipe, cleaning the blockage on the left surface of the filter screen and effectively reducing the degree of filter screen blockage; Step 5: When the brushless motor drive module starts, the second spring contracts when energized, driving the insertion rod to drive the insertion plate to insert into the inner ring of the rotating ring. Then, the flowing oil body pushes the insertion plate to rotate the rotating ring, driving the cleaning brush to actively clean the outer wall of the filter screen. At the same time, the clockwork spring stores energy until it stops contracting after reaching the contraction limit and waits to rebound; Step 6: When the brushless motor drive module stops, the second spring rebounds when de-energized, the insertion plate withdraws from the inner ring of the rotating ring, and the clockwork spring releases to drive the rotating ring to rotate in the reverse direction, completing the compensating cleaning of the left side of the outer wall of the filter screen, avoiding the increase in power consumption of the brushless motor drive module under the same pressure caused by blockage, and improving the determination accuracy of this device.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. By setting a pressure gauge and a control module, the present invention can detect the internal working pressure of the housing in real time during the operation of the brushless motor drive module and compare it with the power consumption. By setting the historical power consumption ratio and peak pressure comparison logic, it can judge the operation state of the oil pump and whether there are abnormalities such as blockage of the inlet pipe, thereby improving safety and intelligence.

[0017] 2. By setting a rotating ring, a cleaning mechanism, and a clockwork spring structure, the positive and reverse rotations of the rotating ring are triggered respectively at the instant when the brushless motor drive module works and stops, thereby driving the cleaning brush to perform bidirectional rotary cleaning on the filter screen.

[0018] 3. By setting a fixing sleeve and support feet to form a pluggable filter screen structure, the filter screen can be quickly replaced or cleaned without damaging the overall sealing of the pipeline. By using elastic support feet for stable connection, automatic reset and clamping are realized during insertion or disassembly, improving the maintenance convenience and component reuse rate.

[0019] 4. By providing a plug board, a plug barrel and an internal second spring, and electrically connecting them to the brushless motor drive module, the device automatically pulls the plug rod when the motor starts, causing the flowing oil body to drive the rotating ring to rotate. When the motor stops, the plug board rebounds and resets to cooperate with the release of impurities, effectively improving the self-cleaning ability at the end of the oil pump and enhancing the long-term stability of the equipment operation. Brief Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the left-side structure of the present invention; Figure 2 is a schematic diagram of the right-side structure of the present invention; Figure 3 is a schematic diagram of the internal structure of the present invention; Figure 4 is a schematic diagram of the control module structure of the present invention; Figure 5 is a schematic diagram of the anti-blocking mechanism structure of the present invention; Figure 6 is a schematic diagram of the disassembled structure of the anti-blocking mechanism of the present invention; Figure 7 is a schematic diagram of the support leg structure of the present invention; Figure 8 is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 9 is a schematic diagram of the partial structure of the cleaning mechanism of the present invention; In the figures: 1 housing, 2 inner pump head housing, 3 impeller, 4 pump head housing, 5 inlet pipe, 6 brushless motor drive module, 7 drain pipe, 8 anti-damage mechanism, 9 anti-blocking mechanism, 801 control module, 802 fixed cylinder, 803 pressure gauge, 804 first spring, 901 fixed ring, 902 tight hoop, 903 rotating ring, 904 cleaning mechanism, 905 fixed sleeve, 906 support leg, 907 filter screen, 401 bracket, 402 cleaning brush, 403 plug barrel, 404 second spring, 405 pressure relief pipe, 406 socket, 407 plug board, 408 plug rod. Detailed Description of the Embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to Figures 1-9, the present invention provides a technical solution: an anti-loss type high-efficiency built-in brushless oil pump and a usage method, including a housing 1. The inner wall of the left end of the housing 1 is fixedly connected with an inner pump head housing 2. A brushless motor drive module 6 is arranged on the right side of the inner pump head housing 2. The outer wall of the right side of the brushless motor drive module 6 is fixedly connected with the inner wall of the housing 1. The left output end of the brushless motor drive module 6 penetrates through the inner pump head housing 2 and extends to the left side of the inner pump head housing 2. The left outer wall of the output end of the brushless motor drive module 6 is fixedly connected with an impeller 3. A pump head housing 4 is arranged on the left side of the inner pump head housing 2. The outer wall of the pump head housing 4 is fixedly connected with the inner wall of the housing 1. An oil inlet pipe 5 is arranged on the left side of the pump head housing 4. An oil discharge pipe 7 is arranged on the right side of the housing 1. An anti-loss mechanism 8 is arranged on the upper right side of the housing 1. An anti-blocking mechanism 9 is arranged on the outer part of the left side of the oil inlet pipe 5.

[0023] The brushless motor drive module 6 of this device is connected to an external power supply, and this device is immersed in oil. The right end of the oil discharge pipe 7 is connected to a pipeline with a solenoid valve. When the brushless motor drive module 6 starts, the solenoid valve is in the open state, and when the brushless motor drive module 6 is closed, the solenoid valve is in the closed state. After the power supply starts the brushless motor drive module 6, the brushless motor drive module 6 drives the impeller 3 to rotate. Then, the oil body entering from the oil inlet pipe 5 is pumped to the right by the impeller 3. Then, the oil body passes through the inside of the housing 1 and is discharged from the oil discharge pipe 7 to the pipeline communicating with the outside, realizing the oil pumping work. And the flowing oil body can take away the operating heat of this device and reduce the operating temperature; The anti-loss mechanism 8 includes a control module 801 and a detection component; The control module 801 is arranged on the right side of the housing 1. The outer wall of the control module 801 is fixedly connected with the outer wall of the housing 1. The control module 801 includes a processing module, a control module, a memory module, and a transmission module; The brushless motor drive module 6 is electrically connected to the control module 801. The control module 801 can monitor and record the operating power of the brushless motor drive module 6. The detection component includes a fixed cylinder 802. The lower end of the fixed cylinder 802 is fixedly connected with the upper right side of the housing 1. The inside of the fixed cylinder 802 is communicated with the right-side cavity inside the housing 1. A pressure gauge 803 is inserted into the inside of the fixed cylinder 802. The outer wall of the pressure gauge 803 is fixedly connected with a first spring 804. The upper end of the first spring 804 is fixedly connected with the inner wall of the fixed cylinder 802. The inside of the fixed cylinder 802 is a hollow structure, and the pressure gauge 803 can move up and down relative to the fixed cylinder 802. The inner wall of the fixed cylinder 802 can limit the movement stroke of the pressure gauge 803. The lower end of the pressure gauge 803 extends into the inside of the housing 1; During the operation of the brushless motor drive module 6, the pressure gauge 803 detects the internal pressure of the housing 1 in real time and transmits it to the control module 801. At the same time, the control module 801 monitors the operating power of the device, calculates the internal pressure of the pressure gauge 803 and the operating power of the brushless motor drive module 6, synchronously generates the historical power consumption ratio, and the control module 801 connects to the external control terminal to output the change of the power consumption ratio, thereby detecting the operating state of the device. When aging or other abnormalities are detected, maintenance can be carried out in time to avoid damage; The specific method is as follows: During the operation of the brushless motor drive module 6, the control module 801 collects the following parameters in real time: The instantaneous pressure value detected by the pressure gauge 803: P(t), that is, the internal pressure of the housing 1 at time t; The current working power of the motor: W(t), that is, the operating power of the brushless motor drive module 6 at time t; The control module 801 calculates the power consumption ratio per unit pressure based on the above data: η(t) = W(t) / P(t) Where η(t) represents the energy consumption required per unit pressure and reflects the operating efficiency of the device. The control module monitors the change trend of η(t) and calculates its change rate: Δη = η(t 2 ) - η(t 1 ), where Δt = t 2 - t 1 When Δη is continuously negative and the duration of the decrease exceeds the set threshold ΔT, it is determined that the device has an aging trend and a maintenance warning signal is issued; And at the moment when the oil pumping of this device ends, the valve body in the pipeline connected to the right side of the drain pipe 7 closes instantly. Due to inertia, the oil body inside the housing 1 forms a water hammer effect and impacts the right inner wall of the housing 1. At this time, the instantaneous pressure at the lower side of the pressure gauge 803 increases, which can cause the pressure gauge 803 to move upward and compress the first spring 804 to buffer the impact. At the same time, the pressure gauge 803 records the peak pressure and transmits it to the control module 801. The control module 801 compares the historical peak pressure. When the left side of the inlet pipe 5 is blocked or other situations occur, when the oil body stops moving, part of the oil body impact will be intercepted by the blockage, and the peak pressure at the pressure gauge 803 will decrease. When the instantaneous peak pressure is too low compared with the historical peak pressure, it is judged that the left side of the inlet pipe 5 is blocked abnormally, and then an alarm is sent to the external control terminal through the control module 801, thereby avoiding damage caused by blockage.

[0024] The specific method is as follows: At the moment when the oil pumping ends, at time point ts, due to the sudden closing of the solenoid valve in the pipeline connected to the drain pipe 7, a water hammer effect occurs in the oil body, resulting in an instantaneous pressure increase. The system records this instantaneous peak pressure: P_peak = P(ts) The control module compares this value with the historical average peak pressure P_avg, and the difference is: Delta_P = P_avg - P_peak When Delta_P exceeds the system-set threshold delta (i.e., Delta_P > delta), it indicates that the instantaneous impact is abnormally low, and it is speculated that there may be a blockage on the left side of the inlet pipe 5. At this time, the control module 801 will immediately send an alarm signal to the external control terminal to prompt cleaning or maintenance to prevent damage to the oil pump caused by the blockage.

[0025] The anti-blocking mechanism 9 includes a connecting component and a swivel ring 903 on the connecting component; The swivel ring 903 is arranged on the left side of the inlet pipe 5. A cleaning mechanism 904 is arranged on the outer side of the swivel ring 903. The swivel ring 903 can rotate relative to the inlet pipe 5. The connecting component includes a fixed ring 901. The inner wall of the right side of the fixed ring 901 contacts the outer wall of the inlet pipe 5. A tightening hoop 902 is arranged on the outer wall of the fixed ring 901. The left end of the fixed ring 901 is connected to the right side of the swivel ring 903 through a hairspring. A fixed sleeve 905 is arranged on the left side of the inlet pipe 5. The right side of the fixed sleeve 905 contacts the outer wall of the left side of the inlet pipe 5. Five support feet 906 are fixedly connected to the inner wall of the fixed sleeve 905. The right ends of the support feet 906 extend into the interior of the inlet pipe 5, and the outer walls of the support feet 906 contact the inner wall of the inlet pipe 5. A filter screen 907 is fixedly connected to the inner wall of the fixed sleeve 905. The support feet 906 are made of elastic metal. When the support feet 906 are moved out of the interior of the inlet pipe 5, they can rebound outward, and the fixed sleeve 905 is located outside the inlet pipe 5.

[0026] During use, the filter screen 907 and the fixed sleeve 905 are fixed to the left end of the inlet pipe 5 through five support feet 906 to filter the oil body entering the interior of the inlet pipe 5. And during disassembly, only by unplugging the fixed sleeve 905 can the replacement and cleaning operation be completed, which is convenient for maintenance. And during use, when the oil pump stops instantaneously, as the pressure in the housing 1 increases, the pressure gauge 803 compresses the first spring 804 to generate displacement. Subsequently, the first spring 804 rebounds and will push the pressure gauge 803 to reset. During the reset process of the pressure gauge 803, part of the oil body inside the housing 1 will be discharged outward through the left side of the inlet pipe 5. The counterflow oil body will carry part of the blockage adhered to the left side of the filter screen 907 to the left, thereby alleviating the blockage progress of the filter screen 907.

[0027] According to the above technical solution, the cleaning mechanism 904 includes a bracket 401. One end of the bracket 401 is fixedly connected to the inner wall of the rotating ring 903, and the other end of the bracket 401 is fixedly connected with a cleaning brush 402. One side of the outer wall of the cleaning brush 402 contacts the left side of the outer wall of the filter screen 907. An insertion cylinder 403 is fixedly connected to the outer wall of the rotating ring 903. A second spring 404 is fixedly connected to the outer wall of the rotating ring 903 at the position inside the insertion cylinder 403. Two pressure relief pipes 405 are fixedly connected to the outer wall of the insertion cylinder 403. An insertion port 406 is formed on the side wall of the rotating ring 903. An insertion plate 407 is inserted into the insertion port 406. One side of the insertion plate 407 is fixedly connected with an insertion rod 408. One end of the insertion rod 408 is inserted into the insertion cylinder 403, and the end of the insertion rod 408 located inside the insertion cylinder 403 is fixedly connected to the outer wall of the second spring 404. The insertion plate 407 is an inclined plate-like structure. When the second spring 404 is in its normal state, the insertion plate 407 is located outside the inner circle of the rotating ring 903. When the second spring 404 contracts, one side of the insertion plate 407 can move to the inside of the inner circle of the rotating ring 903. Both ends of the second spring 404 are electrically connected to the brushless motor drive module 6. The insertion rod 408 can move relative to the insertion cylinder 403. An elastic film is provided on the inner wall of the pressure relief pipe 405; Since both ends of the second spring 404 are electrically connected to the brushless motor drive module 6, when the brushless motor drive module 6 is started, the second spring 404 is electrified. Since the single turns of the spring do not contact or are insulated from each other, when the spring is electrified, it is equivalent to an energized solenoid. Each turn of the spring is equivalent to a circular current, and the current directions in each turn of the spring are the same. Therefore, according to the mutual attraction between the same-direction currents, each turn of the spring attracts the adjacent spring. Thus, the second spring 404 as a whole will contract. Since the second spring 404 contracts when electrified, it will further pull the insertion rod 408 to move towards the surface side of the rotating ring 903, and then the insertion rod 408 will drive the insertion plate 407 to be inserted into the inner circle of the rotating ring 903. Then, the oil body passing through the inside of the rotating ring 903 will push the insertion plate 407, and then drive the rotating ring 903 to deflect relative to the fixed ring 901. At the same time, the clockwork spring at the connection between the rotating ring 903 and the fixed ring 901 contracts. During the rotation of the rotating ring 903, the cleaning brush 402 is driven to rotate to clean the outer wall of the filter screen 907. When the brushless motor drive module 6 stops pumping oil instantaneously, the second spring 404 is powered off and rebounds to push the insertion rod 408 back to its original position, and the insertion plate 407 retracts to the outside of the rotating ring 903. At this time, the clockwork spring at the connection between the rotating ring 903 and the fixed ring 901 drives the rotating ring 903 to rebound, so that the cleaning brush 402 cleans the left side of the outer wall of the filter screen 907.

[0028] At the same time, since the insertion plate 407 retracts to the outside of the rotating ring 903, the blockage dropped on the surface of the cleaning brush 402 can be smoothly pushed away from the inside of the rotating ring 903 by the oil body squeezed out by the pressure gauge 803 inside the housing 1, so that the blockage can be discharged more thoroughly.

[0029] A method for using a loss-proof, high-efficiency, internal brushless oil pump comprises the following steps: Step 1: Place the gasoline pump in the fuel tank, connect the external power supply, connect the oil drain pipe 7 to the external pipeline, start the brushless motor drive module 6 and open the pipeline on the right side of the oil drain pipe 7, so that the brushless motor drive module 6 drives the impeller 3 to rotate, and the oil sucked into the oil inlet pipe 5 is transported to the right side through the inside of the housing 1 to the oil drain pipe 7 for discharge, so as to realize the oil pumping operation, and use the oil flow to take away the heat generated during the operation of the equipment to reduce the temperature rise; Step 2: During the oil pumping process, the pressure P(t) inside the housing 1 is detected in real time by the pressure gauge 803, and the current power W(t) of the brushless motor drive module 6 is synchronously recorded by the control module 801 to calculate the unit pressure power consumption ratio η(t) = W(t) / P(t), and its change trend is monitored. When the change rate Δη of η(t) is continuously negative and the duration exceeds the preset threshold ΔT, it is determined that the equipment has an aging trend, and the control module 801 sends a warning signal to the external control terminal; Step 3: At the instant ts when the oil pumping ends, the solenoid valve connected to the oil discharge pipe 7 is closed to cause a water hammer effect. The instantaneous peak pressure P_peak = P(ts) is recorded by the pressure gauge 803. The control module 801 compares it with the historical average peak pressure P_avg. If Delta_P = P_avg - P_peak>delta, and the average power consumption per unit time of the brushless motor drive module 6 continues to be higher than the power consumption threshold W_threshold, it is determined that there is a risk of blockage on the left side of the oil inlet pipe 5, and an alarm is triggered to prompt cleaning and maintenance; Step 4: At the moment when the oil pumping is finished, the pressure gauge 803 moves upward due to the impact of the water hammer, compresses the first spring 804, and then rebounds to reset. This reset process drives part of the oil to be discharged through the oil inlet pipe 5 in reverse flow, cleaning the blockage on the left surface of the filter 907, effectively reducing the degree of filter blockage; Step 5: When the brushless motor drive module 6 is started, the second spring 404 is energized and contracts, driving the plug rod 408 to drive the plug plate 407 to insert into the inner ring of the rotating ring 903, and then the flowing oil body pushes the plug plate 407 to rotate the rotating ring 903, driving the cleaning brush 402 to actively clean the outer wall of the filter 907, and the clockwork spring stores energy at the same time until the clockwork spring stops contracting after the contraction limit, waiting for rebound; Step 6: When the brushless motor drive module 6 stops, the second spring 404 rebounds after power failure, the plug plate 407 withdraws from the inner ring of the rotating ring 903, and the spring spring is released to drive the rotating ring 903 to rotate in the opposite direction, completing the compensatory cleaning of the left side of the outer wall of the filter 907, avoiding the increase in power consumption of the brushless motor drive module 6 under the same pressure caused by blockage, thereby improving the determination accuracy of the device.

[0030] The anti-loss type high-efficiency built-in brushless oil pump and its usage method described in this application realize the real-time monitoring and active maintenance of the operating state of the oil pump system during continuous operation. By combining the anti-loss mechanism and the anti-blocking mechanism, an intelligent monitoring and mechanical self-cleaning closed-loop design is constructed. A pressure gauge is used to collect the internal pressure of the oil pump in real time and compare and analyze it with the power consumption data of the brushless motor, so as to calculate the unit pressure power consumption ratio and timely reflect the risk of equipment aging or blockage. At the same time, when the oil pumping ends, the water hammer effect is used to record the instantaneous peak pressure and compare it with historical data to judge whether there is a blockage hidden danger at the oil inlet, and then a warning signal is sent to the external control terminal, enabling maintenance personnel to take necessary measures to ensure the safety of the equipment before a failure occurs; in terms of anti-blocking, this application realizes the automatic cleaning function of the oil pump filter screen by setting structures such as a rotating ring, a plug board, a cleaning brush, and a second spring. When the brushless motor starts, the second spring contracts electrically to drive the insertion rod to drive the plug board to insert into the inner ring of the rotating ring, and the flowing oil body drives the rotating ring to rotate, thereby driving the cleaning brush to actively clean the outer wall of the filter screen. At the moment when the motor stops, the second spring rebounds electrically to make the plug board withdraw from the inner ring of the rotating ring, and the spring-driven rotating ring rotates in the reverse direction at the same time to complete the compensatory cleaning of the other side of the filter screen. This active cleaning and maintenance measure not only effectively prevents impurities from accumulating inside the oil pump and causing blockage, but also fully reduces the system wear and abnormal energy consumption caused by long-term continuous oil pumping work through the periodic self-adjustment of the mechanical structure, realizing continuous and stable operation based on automatic monitoring and intelligent warning.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A damage-proof high-efficiency built-in brushless oil pump, comprising a shell (1), a pump head inner shell (2) being fixedly connected to the inner wall at the left end of the shell (1), a brushless motor drive module (6) being arranged on the right side of the pump head inner shell (2), a right side outer wall of the brushless motor drive module (6) being fixedly connected to the inner wall of the shell (1), a left side output end of the brushless motor drive module (6) penetrating the pump head inner shell (2) and extending to the left side of the pump head inner shell (2), an impeller (3) being fixedly connected to the left side outer wall of the output end of the brushless motor drive module (6), a pump head shell (4) being arranged on the left side of the pump head inner shell (2), an outer wall of the pump head shell (4) being fixedly connected to the inner wall of the shell (1), an oil inlet pipe (5) being arranged on the left side of the pump head shell (4), and an oil discharge pipe (7) being arranged on the right side of the shell (1), characterized in that: An anti-damage mechanism (8) is provided on the upper right side of the housing (1), and an anti-blocking mechanism (9) is provided on the left side outside of the oil inlet pipe (5); The damage prevention mechanism (8) comprises a control module (801) and a detection component, which is used to monitor the internal pressure of the housing (1) and issue an early warning in the event of an abnormality; The control module (801) is arranged on the right side of the housing (1), the outer wall of the control module (801) is fixedly connected to the outer wall of the housing (1), and the control module (801) comprises a processing module, a control module, a memory module and a transmission module; The brushless motor drive module (6) is electrically connected to the control module (801), and the control module (801) is capable of monitoring and recording the operating power of the brushless motor drive module (6); The anti-blocking mechanism (9) comprises a connecting assembly and a rotating ring (903) on the connecting assembly; The rotating ring (903) is arranged on the left side of the oil inlet pipe (5), and a cleaning mechanism (904) is arranged on the outer side of the rotating ring (903). The rotating ring (903) can actively and / or passively rotate relative to the oil inlet pipe (5).

2. The anti-damage type high-efficiency internal brushless oil pump according to claim 1, characterized in that: The detection component comprises a fixed cylinder (802), the lower end of the fixed cylinder (802) is fixedly connected to the upper right side of the outer shell (1), the interior of the fixed cylinder (802) is connected to the right side cavity of the inner shell (1), a pressure gauge (803) is inserted into the interior of the fixed cylinder (802), the outer wall of the pressure gauge (803) is fixedly connected to a first spring (804), and the upper end of the first spring (804) is fixedly connected to the inner wall of the fixed cylinder (802).

3. The anti-damage type high-efficiency internal brushless oil pump according to claim 2, characterized in that: The interior of the fixed cylinder (802) is a hollow structure, and the pressure gauge (803) can move up and down relative to the fixed cylinder (802). The inner wall of the fixed cylinder (802) can limit the movement stroke of the pressure gauge (803), and the lower end of the pressure gauge (803) extends to the interior of the housing (1).

4. The anti-damage type high-efficiency internal brushless oil pump according to claim 3, characterized in that: The connection assembly comprises a fixing ring (901), the right inner wall of the fixing ring (901) contacts the outer wall of the oil inlet pipe (5), the outer wall of the fixing ring (901) is provided with a tightening hoop (902), the left end of the fixing ring (901) is connected to the right side of a rotating ring (903) via a spring, the left side of the oil inlet pipe (5) is provided with a fixing sleeve (905), the right side of the fixing sleeve (905) contacts the left outer wall of the oil inlet pipe (5), the inner wall of the fixing sleeve (905) is fixedly connected with a plurality of supporting legs (906), the right end of the supporting leg (906) extends to the inside of the oil inlet pipe (5), and the outer wall of the supporting leg (906) contacts the inner wall of the oil inlet pipe (5), and the inner wall of the fixing sleeve (905) is fixedly connected with a filter screen (907).

5. The anti-damage type high-efficiency internal brushless oil pump according to claim 4, characterized in that: The support leg (906) is a metal structure having elasticity, and when the support leg (906) moves out of the oil inlet pipe (5), it can rebound outward, and the fixing sleeve (905) is located outside the oil inlet pipe (5).

6. The anti-damage type high-efficiency internal brushless oil pump according to claim 5, characterized in that: The cleaning mechanism (904) comprises a bracket (401), one end of the bracket (401) is fixedly connected to the inner wall of the rotating ring (903), the other end of the bracket (401) is fixedly connected to a cleaning brush (402), one side of the outer wall of the cleaning brush (402) contacts the left side of the outer wall of the filter screen (907), the outer wall of the rotating ring (903) is fixedly connected to an insert (403), and the outer wall of the rotating ring (903) is located inside the insert (403) and is fixedly connected to a second spring (404). ), the outer wall of the insert cylinder (403) is fixedly connected to two pressure relief pipes (405), the side wall of the rotating ring (903) is provided with a socket (406), the interior of the socket (406) is plugged with a plug plate (407), one side of the plug plate (407) is fixedly connected to an insert rod (408), one end of the insert rod (408) is plugged into the interior of the insert cylinder (403), and the end of the insert rod (408) located inside the insert cylinder (403) is fixedly connected to the outer wall of the second spring (404).

7. The anti-damage type high-efficiency internal brushless oil pump according to claim 6, characterized in that: The plug plate (407) is a plate-shaped structure arranged obliquely, and the second spring (404) positions the connection side of the plug plate (407) outside the inner circle of the rotating ring (903) in a normal state, and the second spring (404) moves the connection side of the plug plate (407) to the inside of the inner circle of the rotating ring (903) in a contracted state.

8. The anti-damage type high-efficiency internal brushless oil pump according to claim 7, characterized in that: Both ends of the second spring (404) are electrically connected to the brushless motor drive module (6); the insertion rod (408) is movable relative to the insertion tube (403); and an elastic film is provided on the inner wall of the pressure relief tube (405).

9. A method for using a damage-resistant, high-efficiency, internal brushless oil pump, characterized in that: The following steps are involved: Step 1: Place the gasoline pump in the fuel tank and connect it to an external power supply, connect the oil drain pipe (7) to the external pipeline, start the brushless motor drive module (6) and open the pipeline on the right side of the oil drain pipe (7), so that the brushless motor drive module (6) drives the impeller (3) to rotate, and the oil sucked into the oil inlet pipe (5) is transported to the right side through the inside of the housing (1) to the oil drain pipe (7) for discharge, thereby achieving the oil pumping operation, and taking away the heat generated during the operation of the equipment with the help of the flow of the oil to reduce the temperature rise; Step 2: During the oil pumping process, the pressure P(t) inside the housing (1) is detected in real time by the pressure gauge (803), and the current power W(t) of the brushless motor drive module (6) is simultaneously recorded by the control module (801) to calculate the unit pressure power consumption ratio η(t) = W(t) / P(t), and its change trend is monitored. When the change rate Δη of η(t) is continuously negative and the duration exceeds a preset threshold ΔT, it is determined that the device has an aging trend, and the control module (801) sends a warning signal to the external control terminal; Step 3: At the moment when the oil pumping ends (time point ts), the solenoid valve connected to the oil discharge pipe (7) is closed to cause a water hammer effect. The instantaneous peak pressure P_peak = P(ts) is recorded by the pressure gauge (803). The control module (801) compares it with the historical average peak pressure P_avg. If Delta_P = P_avg - P_peak > delta, and the average power consumption per unit time of the brushless motor drive module (6) continues to be higher than the power consumption threshold W_threshold, it is determined that there is a risk of blockage on the left side of the oil inlet pipe (5), and an alarm is triggered to prompt cleaning and maintenance; Step 4: At the moment when the oil pumping is finished, the pressure gauge (803) is impacted by the water hammer and moves upward to compress the first spring (804), and then rebounds to reset. This reset process drives part of the oil to be discharged through the oil inlet pipe (5) in reverse flow, cleaning the blockage on the left surface of the filter (907) and reducing the degree of blockage of the filter; Step 5: When the brushless motor drive module (6) is started, the second spring (404) is energized and contracts, driving the insertion rod (408) to drive the insertion plate (407) to be inserted into the inner ring of the rotating ring (903), and then the flowing oil body pushes the insertion plate (407) to rotate the rotating ring (903), driving the cleaning brush (402) to actively clean the outer wall of the filter (907), and the spring stores energy at the same time until the spring stops contracting after reaching the limit of contraction, waiting for rebound; Step 6: When the brushless motor drive module (6) stops, the second spring (404) is powered off and rebounds, the plug plate (407) exits the inner ring of the rotating ring (903), and the spring spring is released to drive the rotating ring (903) to rotate in the opposite direction, thereby completing the compensation cleaning of the left side of the outer wall of the filter (907).

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