Long-service-life high-speed direct-current booster pump

Abstract

The invention relates to the technical field of direct-current booster pumps, in particular to a long-service-life high-speed direct-current booster pump which comprises a motor, a pump shell and an impeller, a water receiving pipe is detachably arranged on the pump shell, a filter drum is installed at the end, extending into the pump shell, of the water receiving pipe, a center shaft is coaxially and detachably connected to the impeller, and the other end of the center shaft penetrates into the filter drum. According to the device, after the water body is primarily pressurized through the spiral blade, the impeller is used for rotating at a high rotating speed to enable the pressure of the water body to be secondarily increased, and the tandem type two-stage pressurization structure combines the volume pressurization technology with the centrifugal pressurization technology and is matched with the filtering effect of the filter cartridge, so that the adaptability advantage of the spiral blade to the water body containing impurities is brought into play; and high-pressure output is achieved through the impeller, the technical problem that a single supercharging mode is low in efficiency or high in abrasion speed under the complex water quality condition is effectively solved, the comprehensive supercharging efficiency and operation stability of the device are remarkably improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current booster pumps, and in particular to a long-life high-speed direct current booster pump. Background Art

[0002] A DC booster pump is a liquid conveying or boosting machine driven by direct current. It features small size, high efficiency, low power consumption, and long life, making it widely used in a variety of fields, including household water supply, industrial equipment, agricultural irrigation, and medical and environmental protection. A DC booster pump uses a DC motor to drive the impeller or piston to increase fluid pressure. Common types include brushed DC water pumps and brushless DC water pumps.

[0003] Brushed DC water pump: The motor coil and commutator rotate, while the magnet and carbon brushes do not rotate. The alternating current direction is achieved through the commutator and brushes, driving the impeller to rotate and increase pressure.

[0004] Brushless DC water pump: adopts electronic commutation technology, no carbon brush wear, low noise, long life, and good boosting effect.

[0005] It should be noted that in the fluid conveying system, the operating efficiency of the DC booster pump is significantly correlated with the medium characteristics. When the conveying medium is water containing a large amount of solid impurities (such as sediment, suspended particles, etc.), under such water quality conditions, the existing DC booster pumps generally lack targeted pre-filtration devices, resulting in impurity-containing water directly entering the internal flow channel of the pump body. During the operation of the pump body, the impeller, as the core rotating component, needs to convert the fluid kinetic energy into pressure energy through high-speed rotation; when the sand-laden water flows through the pump body, the hard particles in the water produce continuous mechanical action on the internal channel wall of the pump body and the impeller surface. This action mainly manifests itself in two forms: abrasive wear and erosion wear. Abrasive wear is caused by the sliding, rolling or cutting movement of particles on the impeller surface, resulting in the gradual peeling of the metal surface material. As the running time accumulates, obvious grooves and thinning of the wall thickness will appear on the impeller surface, causing the impeller profile to be distorted and destroying the original hydraulic design parameters. This will not only cause performance degradation problems such as reduced pump head and reduced efficiency, but more seriously, the gap between the impeller and the pump casing will increase due to wear, causing secondary problems such as fluid backflow and increased vibration. Continuous abnormal vibration will further aggravate the loss of auxiliary components such as bearings and seals, forming a vicious circle. Under high-sand water conditions, the impeller life of the DC booster pump will be shortened, the overall equipment average trouble-free operation time will decrease, and the equipment maintenance cost and downtime loss will be significantly increased. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a long-life high-speed DC booster pump to solve the above problems.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: A long-life, high-speed DC booster pump comprises a motor, a pump housing, and an impeller. A water inlet pipe is detachably provided on the pump housing. A filter cartridge is mounted on one end of the water inlet pipe extending into the pump housing. A central shaft is coaxially and detachably connected to the impeller. The other end of the central shaft penetrates into the interior of the filter cartridge. A spiral blade is detachably provided on the central shaft within the filter cartridge. The inner walls of the water inlet pipe and the filter cartridge both match the edges of the spiral blade. The filter cartridge is provided with a sewage discharge barrel at one end away from the water receiving pipe, and a plug is slidably fitted inside the sewage discharge barrel for closing the sewage discharge barrel inlet. The central axis is rotatably connected to the sewage discharge barrel, and a one-way bearing is provided on the central axis inside the sewage discharge barrel. A magnet is installed on the one-way bearing, and an electromagnet is installed on the side of the plug close to the inner bottom wall of the sewage discharge barrel. The magnet and the electromagnet magnetically repel each other, and a tension spring is installed between the plug and the inner bottom wall of the sewage discharge barrel.

[0008] Preferably, an impeller installation cavity and a clean water cavity are provided inside the pump housing, the two are internally communicated, and the filter cartridge is located inside the clean water cavity.

[0009] Preferably, the filter cartridge consists of a straight filter cartridge and a conical filter cartridge, and the sewage discharge cartridge is fixedly arranged on the output end of the conical filter cartridge.

[0010] Preferably, a sewage collecting chamber is provided on the outer surface of the sewage cylinder, and the sewage cylinder and the sewage collecting chamber are connected through the internal flow port. When the plug moves away from the sewage cylinder inlet, the space inside the sewage cylinder on the side of the plug close to the conical filter cartridge is connected to the interior of the sewage collecting chamber, and a sewage pipe is provided at the bottom of the sewage collecting chamber.

[0011] Preferably, an elastic sealing protrusion is provided at the inlet of the sewage cylinder, and the shape of the plug head matches the elastic sealing protrusion; A pressure sensor is installed between the electromagnet and the plug, and the motor is electrically connected to the pressure sensor.

[0012] Preferably, a sleeve rod is provided in the middle of the spiral blade, one end of the central shaft passing through the filter cartridge passes through the sleeve rod, and the end portion is threadedly connected with a nut for locking; An embedding block is provided at the other end of the central shaft, and an engaging groove matching the embedding block is provided on the impeller.

[0013] Preferably, a connecting cylinder is provided between the motor and the pump housing, and fan blades are installed inside the connecting cylinder. The impeller and the fan blades are coaxially connected to the output shaft of the motor, and an air inlet is provided on the connecting cylinder.

[0014] Preferably, it also includes a channel and a water outlet pipe seat, the water outlet pipe seat is arranged on the pump housing, and either the outlet of the impeller mounting cavity and the water outlet pipe seat is connected to the input end of the water outlet pipe seat. The other end of the channel extends to the interior of the connecting tube, and an electromagnetic valve is installed at the end, and an atomizing nozzle is installed at the output end of the solenoid valve, and the spraying direction of the atomizing nozzle is set toward the fan blade.

[0015] Preferably, a temperature sensor is provided inside the motor, and the temperature sensor is electrically connected to the solenoid valve.

[0016] The beneficial effects of the present invention are: 1. After the device initially pressurizes the water body through spiral blades, the impeller is rotated at a higher speed to make the water pressure jump a second time. This series two-stage pressurization structure integrates the technologies of volumetric pressurization and centrifugal pressurization, and cooperates with the filtering effect of the filter cartridge. It not only gives play to the adaptability of the spiral blades to water bodies containing impurities, but also uses the impeller to achieve high-pressure output, effectively solving the technical problems of low efficiency or rapid wear of a single pressurization method under complex water quality conditions, significantly improving the comprehensive pressurization efficiency and operational stability of the device, and extending the service life of the device.

[0017] 2. During the operation of this device, the forward rotation of the spiral blade can scrape off the impurities attached to the inner wall of the filter cartridge, avoiding the filtration effect and water pressurization effect affected by the blockage of the filter cartridge; during the rotation of the spiral blade, the impurities in the water will be pushed to the left and gathered. As the amount of impurities gradually accumulates, when the thrust exerted on the plug reaches the set value, the inlet of the sewage barrel will automatically open, and the impurities will pass through the sewage barrel, the flow port, the sewage collecting chamber in turn, and finally flow out of the device through the sewage pipe, realizing the automatic discharge of impurities.

[0018] 3. The device can adjust the resistance at the entrance of the sewage cylinder according to demand to ensure that the sewage system can adapt to pressure fluctuations when the first-stage pressure increase of the water body is adjusted, further improving the practicality of the device.

[0019] 4. The device features detachable spiral blades and water pipes, as well as detachable impellers and central shafts, allowing the various components of the device to be disassembled. For sand-laden water transportation scenarios, the detachable setting allows the components to be transferred to an offline cleaning station, avoiding the incomplete cleaning problem caused by traditional online cleaning. During regular maintenance, the blade wear condition can be simultaneously detected to promptly detect performance degradation caused by wear and ensure that the equipment always maintains optimal operating condition.

[0020] 5. During the continuous operation of the motor of this device, the motor is cooled mainly by the airflow heat exchange mechanism. When the external ambient air temperature is too high, strong direct sunlight and other adverse factors cause the internal temperature of the motor to continue to rise and reach the set value, the solenoid valve opens automatically and the atomizing nozzle sprays water mist. The water mist is fully mixed with the airflow under the continuous drive of the fan blades, realizing heat exchange and heat dissipation with a gas-liquid mixed flow, which significantly improves the overall heat dissipation performance of the motor, ensuring that the motor can continue to operate stably and reliably under harsh working conditions such as high temperature, greatly improving the working safety and service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a schematic cross-sectional structural diagram of the present invention.

[0023] Figure 3 It is a schematic diagram of the explosion structure of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the filter cartridge of the present invention.

[0025] Figure 5 It is a schematic cross-sectional structural diagram of the filter cartridge of the present invention.

[0026] Figure 6 For the present invention Figure 2 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0027] Figure 7 For the present invention Figure 2 Schematic diagram of the structure with a partial enlargement at point B.

[0028] In the accompanying drawings: 1. Motor; 2. Pump housing; 3. Impeller; 4. Filter cartridge; 5. Central shaft; 6. Spiral blade; 7. Drain barrel; 8. Plug; 9. One-way bearing; 10. Magnet; 11. Electromagnet; 12. Tension spring; 13. Impeller mounting chamber; 14. Clean water chamber; 15. Straight filter cartridge; 16. Conical filter cartridge; 17. Drain chamber; 18. Flow port; 19. Drain pipe; 20. Sleeve rod; 21. Nut; 22. Embedded block; 23. Engaging groove; 24. Connecting cylinder; 25. Fan blade; 26. Air inlet; 27. Channel; 28. Atomizing nozzle; 29. ​​Solenoid valve; 30. Water connecting pipe; 31. Elastic sealing protrusion; 32. Pressure sensor; 33. Outlet pipe seat; 34. Heat sink. DETAILED DESCRIPTION

[0029] The following will refer to Figures 1 to 7The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] A long-life high-speed DC booster pump, such as Figure 1-Figure 3 and Figure 5 The pump casing 2 is provided with a detachable water inlet pipe 30, which is connected to an external water supply pipe through a stop valve. In this embodiment, the pump casing 2 and the water inlet pipe 30 are connected by bolts; one end of the water inlet pipe 30 extending into the pump casing 2 is provided with a filter cartridge 4, and a central shaft 5 is coaxially and detachably connected to the impeller 3. The other end of the central shaft 5 is provided with an embedded block 22, and the impeller 3 is provided with an engaging groove 23 matching the embedded block 22; the other end of the central shaft 5 penetrates into the interior of the filter cartridge 4, and a spiral blade 6 is detachably provided on the central shaft 5 inside the filter cartridge 4. The inner walls of the water inlet pipe 30 and the filter cartridge 4 are matched with the edges of the spiral blade 6; an impeller mounting chamber 13 and a clean water chamber 14 are provided inside the pump casing 2, and the two are internally connected, and the filter cartridge 4 is located inside the clean water chamber 14.

[0031] When the motor 1 is in the forward high-speed running state, the driving center shaft 5, the impeller 3 and the spiral blade 6 realize synchronous forward rotation. In this power transmission process, the spiral blade 6 acts as the first-stage boosting element, and the water entering the water receiving pipe 30 flows under the pushing action of the spiral blade 6 (in Figure 5 In this example, the gap between the spiral blades 6 gradually increases from left to right). This process completes the first-stage pressure increase through the volumetric boosting principle. The water initially pressurized by the spiral blades 6 flows through the filter cartridge 4 into the clean water chamber 14. The filter cartridge 4 is an annular high-precision filter plate or filter mesh structure, which is used to intercept and separate solid impurities in the water body, reducing the wear risk of the subsequent impeller 3 pressurization link.

[0032] In the second stage of boosting, the impeller 3, as the core component of the centrifugal boosting, rotates at a relatively high speed. After the water flows into the impeller mounting cavity 13, the kinetic energy and pressure energy are efficiently converted through the centrifugal boosting principle, and the water pressure is increased for the second time.

[0033] This series-type two-stage boosting structure integrates the technologies of volumetric boosting and centrifugal boosting, and cooperates with the filtering effect of the filter cartridge 4. It not only takes advantage of the adaptability of the spiral blades 6 to water bodies containing impurities, but also uses the impeller to achieve high-pressure output, effectively solving the technical problems of low efficiency or rapid wear of a single boosting method under complex water quality conditions, significantly improving the comprehensive boosting efficiency and operational stability of the device, and increasing the service life of the device.

[0034] A sleeve rod 20 is provided in the middle of the spiral blade 6. One end of the central shaft 5 that penetrates the filter cartridge 4 passes through the sleeve rod 20, and a nut 21 for locking is threadedly connected to the end thereof.

[0035] Through the combined design of threaded connection, the spiral blade 6 forms an independent functional module, so that the spiral blade 6 can be quickly separated. During the equipment maintenance cycle, the operator can complete the overall disassembly and assembly of the spiral blade 6 by removing the nut 21, which greatly shortens the maintenance operation time.

[0036] Combined with the detachable connection between the impeller 3 and the central shaft 5 and the detachable setting of the water receiving pipe 30, the various components of the device can be disassembled. For the sand-containing water transportation scenario, the detachable setting allows the various components to be transferred to the offline cleaning station, avoiding the problem of incomplete cleaning caused by traditional online cleaning; during regular maintenance, the blade wear condition can be simultaneously detected (such as coating thickness measurement, surface roughness detection), and performance degradation caused by abrasive wear can be discovered in time to ensure that the equipment always maintains the best operating condition.

[0037] like Figure 2 、 Figure 4-Figure 6 As shown, a sewage barrel 7 is provided at one end of the filter cartridge 4 away from the water receiving pipe 30, and a plug 8 for closing the entrance of the sewage barrel 7 is slidably fitted inside the sewage barrel 7, and the central axis 5 is rotatably connected with the sewage barrel 7. A one-way bearing 9 is provided on the central axis 5 inside the sewage barrel 7, and a magnet 10 is installed on the one-way bearing 9. An electromagnet 11 is installed on the side of the plug 8 close to the inner bottom wall of the sewage barrel 7, and the magnet 10 and the electromagnet 11 magnetically repel each other. A tension spring 12 is installed between the plug 8 and the inner bottom wall of the sewage barrel 7.

[0038] An elastic sealing protrusion 31, such as an elastic sealing ring, is provided at the inlet of the sewage barrel 7. The shape of the head of the plug 8 matches the elastic sealing protrusion 31. The setting of the elastic sealing protrusion 31 improves the sealing performance of the plug 8 at the inlet of the sewage barrel 7.

[0039] The filter cartridge 4 is composed of a straight filter cartridge 15 and a conical filter cartridge 16 , and the sewage discharge cartridge 7 is fixedly arranged on the output end of the conical filter cartridge 16 .

[0040] by Figure 5 It should be noted that during the forward rotation of the spiral blade 6, the impurities in the water will be pushed to the left (through the setting of the conical filter cartridge 16, the impurities are gradually gathered and compressed during the process of being pushed), and finally gathered at the outlet of the conical filter cartridge 16, and a thrust is applied to the plug 8 (in the initial state, under the action of the magnetic repulsive force, the plug 8 is in a state of blocking the inlet of the sewage barrel 7). As the amount of impurities gradually accumulates, when the thrust reaches the set value, the plug 8 is pressed against the inlet of the sewage barrel 7 to open the impurities in the conical filter cartridge 16, and the impurities in the sewage barrel 7 flow into the sewage barrel 7, completing the discharge of impurities in the filter cartridge 4.

[0041] like Figure 2 、 Figure 5 and Figure 6 As shown, a sewage collecting chamber 17 is provided on the outer surface of the sewage barrel 7, and the sewage barrel 7 is connected to the sewage collecting chamber 17 through the circulation port 18. When the plug 8 moves away from the entrance of the sewage barrel 7, the space inside the sewage barrel 7 on the side of the plug 8 close to the conical filter cartridge 16 is connected to the interior of the sewage collecting chamber 17. A sewage pipe 19 is provided at the bottom of the sewage collecting chamber 17, and the output end of the sewage pipe 19 extends out of the pump housing 2; the impurities in the sewage barrel 7 pass through the circulation port 18 and the sewage collecting chamber 17 in turn, and finally flow out of the device through the sewage pipe 19.

[0042] like Figure 2 and Figure 6 As shown, a pressure sensor 32 is installed between the electromagnet 11 and the plug 8 , and the motor 1 is electrically connected to the pressure sensor 32 .

[0043] like Figure 2 As shown, a connecting cylinder 24 is provided between the motor 1 and the pump housing 2 , and a fan blade 25 is installed inside the connecting cylinder 24 . The impeller 3 and the fan blade 25 are coaxially connected to the output shaft of the motor 1 , and an air inlet 26 is opened on the connecting cylinder 24 .

[0044] When the motor 1 is in the forward running state, its output shaft drives the impeller 3 directly connected to it and the coaxially arranged fan blades 25 to rotate synchronously. Under the action of the negative pressure generated by the high-speed rotation of the fan blades 25, the air in the external environment is forced to be drawn into the connecting tube 24 through the air inlet 26. Under the continuous drive of the fan blades 25, an air flow is generated and blown directionally to the heat sink 34 on the surface of the motor 1 shell; the heat sink 34 is made of a material with high thermal conductivity. When the air flow flows through the heat sink 34, according to the heat transfer principle, the heat generated by the motor 1 during operation is quickly transferred to the heat sink 34 through heat conduction, and then the high-speed flowing air takes away the heat by convection heat exchange, effectively controlling the temperature rise of the motor 1 during operation, ensuring that the core components of the motor 1 are always within the appropriate operating temperature range, thereby ensuring that the motor 1 has high stability and reliability during continuous operation, extending the service life of the motor 1, and reducing the occurrence rate of failures caused by overheating.

[0045] like Figure 2 and Figure 7 As shown, it also includes a channel 27 and a water outlet pipe seat 33. The water outlet pipe seat 33 is arranged on the pump housing 2. Any one of the outlet of the impeller mounting chamber 13 and the water outlet pipe seat 33 is connected to the input end of the water outlet pipe seat 33. The other end of the channel 27 extends to the interior of the connecting cylinder 24, and an electromagnetic valve 29 is installed at the end. The output end of the solenoid valve 29 is installed with an atomizing nozzle 28, and the spraying direction of the atomizing nozzle 28 is set toward the fan blade 25; a temperature sensor is provided inside the motor 1, and the temperature sensor is electrically connected to the electromagnetic valve 29.

[0046] When the motor 1 is in continuous operation, the motor 1 is cooled mainly by the airflow heat exchange mechanism. However, in actual working scenarios, when faced with adverse factors such as excessively high external ambient air temperature and strong direct sunlight, relying solely on airflow heat exchange is difficult to effectively suppress the temperature increase trend inside the motor 1, resulting in the internal temperature of the motor 1 continuing to rise.

[0047] A high-precision temperature sensor is installed inside the motor 1 of this device, which can monitor the temperature changes inside the motor 1 in real time and accurately. Once the temperature sensor detects that the temperature inside the motor 1 reaches a preset threshold, it will immediately convert the temperature signal into an electrical signal and transmit it to the control system through the signal transmission line. The control system adopted by this device is built based on single-chip microcomputer technology and has data processing capabilities and fast response characteristics. After receiving the signal from the temperature sensor, the control system immediately issues a control instruction to the solenoid valve 29, which opens the solenoid valve 29, and the high-pressure water flow is transported through the channel 27 to the atomizing nozzle 28, which refines the water flow into a large amount of water mist. Under the continuous drive of the fan blades 25, this fine water mist is fully mixed with the air flow to form a gas-liquid two-phase mixed flow. Under the directional guidance of the fan blades 25, this mixed flow is precisely blown towards the heat sink 34 on the surface of the motor 1 housing. This enhanced heat dissipation method based on the gas-liquid mixed flow significantly improves the overall heat dissipation performance of the motor 1, can quickly and effectively reduce the temperature of the motor 1, and ensure that the motor 1 can continue to operate stably and reliably under harsh operating conditions such as high temperature, greatly improving the working safety and service life of the motor 1.

[0048] During the water pressurization operation of the device, the motor 1 is in a forward running state, and the impeller 3 and the fan blades 25 rotate synchronously. Under the action of the negative pressure generated by the high-speed rotation of the fan blades 25, the air in the external environment is drawn into the interior of the connecting tube 24 through the air inlet 26. Under the continuous drive of the fan blades 25, the air flow is blown directionally toward the heat sink 34 on the surface of the motor 1 shell, effectively controlling the temperature rise of the motor 1 during operation, ensuring that the core components of the motor 1 are always within the appropriate operating temperature range, and thus ensuring that the motor 1 has high stability and reliability during continuous operation.

[0049] During the forward rotation of the impeller 3, the spiral blades 6 rotate synchronously therewith, and the water entering the water receiving pipe 30 flows under the pushing action of the spiral blades 6, so that the water body undergoes the first stage of pressurization; the water body preliminarily pressurized by the spiral blades 6 flows through the filter cartridge 4 into the clean water chamber 14, and the filter cartridge 4 intercepts and separates the solid impurities in the water body, thereby reducing the wear risk of the subsequent impeller 3 pressurization link.

[0050] In the second-stage boosting stage, the impeller 3 rotates at a relatively high speed. After the water in the clean water chamber 14 enters the impeller mounting chamber 13, the efficient conversion of kinetic energy and pressure energy is achieved through the centrifugal boosting principle, and the water pressure is increased a second time. This series-type two-stage boosting structure significantly improves the comprehensive boosting efficiency and operational stability of the device through the technical integration of volumetric boosting and centrifugal boosting.

[0051] It should be noted that during the forward rotation of the spiral blade 6 of the device, the impurities attached to the inner wall of the filter cartridge 4 can be scraped off, thereby preventing the filter cartridge 4 from being blocked, and avoiding the clogging of the filter cartridge 4 affecting the filtering effect of the filter cartridge 4 and the water body pressurization effect; during the rotation of the spiral blade 6, the impurities in the water will be pushed to the left, and finally gathered at the outlet of the conical filter cartridge 16 and exerted a thrust on the plug 8. As the amount of impurities gradually accumulates, the water content of the impurities is reduced due to the pressure. When the thrust reaches the set value, it pushes against the plug 8 to open the entrance of the sewage barrel 7, and the impurities in the conical filter cartridge 16 flow into the sewage barrel 7, and then the impurities in the sewage barrel 7 pass through the flow port 18 and the sewage collecting chamber 17 in turn, and finally flow out of the device through the sewage pipe 19, thereby realizing the automatic discharge of impurities.

[0052] When the device is finished using, the electromagnet 11 is powered off, the magnet 10 and the electromagnet 11 no longer magnetically repel each other, and the tension spring 12 pulls the plug 8 away from the entrance of the sewage barrel 7, that is, the entrance of the sewage barrel 7 is opened. Since the water in the conical filter cartridge 16 is still under pressure at this time, the water carries impurities through the flow port 18 and the sewage collecting chamber 17 in sequence, and is finally discharged through the sewage pipe 19.

[0053] It should be noted that, during the water pressurization operation of the device, the central shaft 5 rotates in the forward direction. Due to the arrangement of the one-way bearing 9, the magnet 10 does not rotate at this time.

[0054] This device has the function of adjusting the opening resistance at the inlet of the sewage barrel 7 to ensure that when the first-stage pressure increase degree of the water body is adjusted (the speed of the spiral blade 6 is adjusted), the sewage system can automatically adapt to the pressure fluctuation, and through the resistance adjustment, the water content of the discharged impurities can also be adjusted.

[0055] The specific operation is: the motor 1 performs reverse rotation at a low speed, and the one-way bearing 9 drives the magnet 10 connected to it to perform synchronous circular motion. This motion mechanism can realize the relative position control between the magnet 10 and the electromagnet 11. By changing the magnetic pole coupling area between the two, the strength of the magnetic repulsive force is accurately adjusted, and the thrust acting on the pressure-bearing surface of the plug 8 is also adjusted, that is, the resistance to the opening of the entrance of the sewage tube 7 is adjusted; it should be noted that the pressure sensor 32 can monitor the changes in the thrust on the plug 8, which is convenient for accurately controlling the adjustment amount of the opening resistance at the entrance of the sewage tube 7.

[0056] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0058] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A long-life high-speed DC booster pump, comprising a motor (1), a pump housing (2) and an impeller (3), characterized in that: The pump housing (2) is detachably provided with a water receiving pipe (30), one end of the water receiving pipe (30) extending into the pump housing (2) is provided with a filter cartridge (4), a central shaft (5) is coaxially detachably connected to the impeller (3), the other end of the central shaft (5) penetrates into the interior of the filter cartridge (4), and a spiral blade (6) is detachably provided on the central shaft (5) inside the filter cartridge (4), and the inner walls of the water receiving pipe (30) and the filter cartridge (4) are both matched with the edge of the spiral blade (6); The filter cartridge (4) is provided with a sewage discharge barrel (7) at one end away from the water receiving pipe (30), and a plug (8) for closing the entrance of the sewage discharge barrel (7) is slidably fitted in the sewage discharge barrel (7), and the central shaft (5) is rotatably connected to the sewage discharge barrel (7). A one-way bearing (9) is provided on the central shaft (5) inside the sewage discharge barrel (7), and a magnet (10) is installed on the one-way bearing (9). An electromagnet (11) is installed on the side of the plug (8) close to the inner bottom wall of the sewage discharge barrel (7), and the magnet (10) and the electromagnet (11) are magnetically repelled. A tension spring (12) is installed between the plug (8) and the inner bottom wall of the sewage discharge barrel (7).

2. A long-life high-speed DC booster pump according to claim 1, characterized in that: An impeller installation cavity (13) and a clean water cavity (14) are provided inside the pump housing (2), and the two are internally communicated, and the filter cartridge (4) is located inside the clean water cavity (14).

3. A long-life high-speed DC booster pump according to claim 1, characterized in that: The filter cartridge (4) is composed of a straight filter cartridge (15) and a conical filter cartridge (16), and the sewage discharge cartridge (7) is fixedly arranged on the output end of the conical filter cartridge (16).

4. A long-life high-speed DC booster pump according to claim 1, characterized in that: The outer surface of the sewage discharge cylinder (7) is provided with a sewage collecting chamber (17), and the sewage discharge cylinder (7) and the sewage collecting chamber (17) are internally communicated through a circulation port (18). When the plug (8) moves away from the inlet of the sewage discharge cylinder (7), the space inside the sewage discharge cylinder (7) located on the side of the plug (8) close to the conical filter cartridge (16) is communicated with the interior of the sewage collecting chamber (17), and a sewage discharge pipe (19) is provided at the bottom of the sewage collecting chamber (17).

5. A long-life high-speed DC booster pump according to claim 1, characterized in that: An elastic sealing protrusion (31) is provided at the inlet of the sewage discharge cylinder (7), and the shape of the head of the plug (8) matches the elastic sealing protrusion (31); A pressure sensor (32) is installed between the electromagnet (11) and the plug (8), and the motor (1) is electrically connected to the pressure sensor (32).

6. A long-life high-speed DC booster pump according to claim 1, characterized in that: A sleeve rod (20) is provided in the middle of the spiral blade (6); one end of the central shaft (5) that penetrates the filter cartridge (4) passes through the sleeve rod (20), and the end thereof is threadedly connected to a nut (21) for locking; An embedding block (22) is provided at the other end of the central shaft (5), and an engaging groove (23) matching the embedding block (22) is provided on the impeller (3).

7. A long-life high-speed DC booster pump according to claim 2, characterized in that: A connecting cylinder (24) is provided between the motor (1) and the pump housing (2), and a fan blade (25) is installed inside the connecting cylinder (24). The impeller (3) and the fan blade (25) are coaxially connected to the output shaft of the motor (1), and an air inlet (26) is provided on the connecting cylinder (24).

8. A long-life high-speed DC booster pump according to claim 7, characterized in that: The pump further comprises a channel (27) and a water outlet pipe seat (33), wherein the water outlet pipe seat (33) is arranged on the pump housing (2), and either the outlet of the impeller mounting chamber (13) or the water outlet pipe seat (33) is communicated with the input end of the water outlet pipe seat (33). The other end of the channel (27) extends to the interior of the connecting cylinder (24), and a solenoid valve (29) is installed at the end thereof. An atomizing nozzle (28) is installed at the output end of the solenoid valve (29), and the spraying direction of the atomizing nozzle (28) is arranged toward the fan blade (25).

9. A long-life high-speed DC booster pump according to claim 8, characterized in that: A temperature sensor is provided inside the motor (1), and the temperature sensor is electrically connected to the solenoid valve (29).

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