Permanent magnet variable frequency booster pump with water pressure automatic regulation function

Abstract

The application provides a permanent magnet variable frequency booster pump with automatic water pressure adjusting function, and belongs to the technical field of water pumps, which solves the problem that the existing booster pump cannot automatically adjust water pressure. The booster pump comprises a cover assembly, a water valve box assembly, a driving motor, a driving controller and an interactive controller are sequentially arranged in the cover assembly, a water pump assembly is arranged at the front end of the output shaft of the driving motor, a multi-way electric valve is connected to the water outlet end of the water pump assembly, a pressure tank and a pressure sensor are arranged on two ends of the multi-way electric valve, a water outlet plug is arranged on one water outlet end of the multi-way electric valve, a one-way valve is connected to the water inlet end of the water pump assembly, an air pump and a power shaft changer are arranged in the cover assembly, the power shaft changer is in transmission connection with the air pump and the rear end of the driving motor, and the water valve box assembly is connected to the multi-way electric valve and the air pump through pipelines. The application can stably perform automatic water supplement, constant pressure water supply, multi-mode start and stop, safety protection and remote intelligent control.

Description

Technical Field

[0001] This invention belongs to the field of water pump technology, and relates to a permanent magnet variable frequency booster pump, particularly a permanent magnet variable frequency booster pump with automatic water pressure adjustment function. Background Technology

[0002] Currently, there are numerous patent applications in the field of permanent magnet variable frequency booster pumps. For example, patent CN121024945A adaptively regulates cavitation by collecting fluid inlet and outlet pressures and eccentric shaft speed; patent CN121916140A integrates electromagnetic drive with a plunger pump assembly, achieving constant pressure output through hydraulic feedback adjustment; patent CN121162532B uses a convex flow channel structure and pressure tank to reduce frequent motor starts; and patent CN120292056A achieves seamless automatic start-stop by judging water usage intention. These solutions each have their own focus in terms of constant pressure control and start-stop optimization.

[0003] However, existing technologies still have shortcomings: most solutions focus on a single function (such as cavitation suppression and reducing the number of start-stop cycles), lack automatic water replenishment functions, and require manual pumping after initial use or water source interruption, which is inconvenient; constant pressure control mostly uses fixed parameters, and the response speed and stability need to be improved; there is a lack of integrated intelligent management capabilities such as multi-mode intelligent switching, multiple safety protections (such as comprehensive diagnosis of water shortage, over-temperature, leakage, etc.) and WiFi remote intelligent control.

[0004] Therefore, this invention focuses on the research and development and improvement of the booster pump structure itself, and designs a permanent magnet variable frequency booster pump with automatic water replenishment (automatic water injection into the pump chamber is achieved through the switching transmission of the water valve box assembly, air pump, power shaft changer and the valve position switching of the multi-way electric valve), adaptive PID constant pressure, multi-mode start and stop, multiple protection and remote interconnection, and automatic water pressure regulation function. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a permanent magnet variable frequency booster pump with automatic water pressure regulation function. The technical problem to be solved by this invention is: how to achieve automatic water pressure regulation through automatic water replenishment.

[0006] The objective of this invention can be achieved through the following technical solutions: A permanent magnet variable frequency booster pump with automatic water pressure regulation function includes an outer casing assembly. The outer casing assembly has a detachable mounting base on its left or right side. Inside the outer casing assembly, from bottom to top, are a water valve box assembly, a drive motor, a drive controller, and an interactive controller. A cooling fan is located at the rear end of the drive motor's output shaft, and a water pump assembly is located at the front end of the drive motor's output shaft. The outlet end of the water pump assembly is connected to a multi-way electric valve. The multi-way electric valve has an inlet end, a water supply connector, a first outlet end, a second outlet end, a sensor interface, and a tank interface. A pressure sensor is located on the sensor interface, and a pressure tank is located on the tank interface. An outlet plug is located on the second outlet end, and the first outlet end is used to connect to a water supply pipeline. The water inlet end of the water pump assembly... The end is connected to a one-way valve, and the outer casing assembly also houses an air pump and a power shaft changer; the water valve box assembly includes a water tank body, inside which a sliding piston plate is slidably installed, and an air inlet connector is located at the rear end of the water tank body. The air outlet of the air pump is connected to the air inlet connector, and the front end of the water tank body is located at the water guide connector. The water guide connector is connected to the water supply connector of the multi-way electric valve via a pipe; the input shaft of the power shaft changer is drivenly connected to the rear end of the output shaft of the drive motor, and the output shaft of the power shaft changer is drivenly connected to the input shaft of the air pump. The power shaft changer has a slidable and rotatable drive shaft inside, on which a first drive gear is fixed. Second drive gears are respectively located on the input and output shafts of the power shaft changer. A switching electric valve is fixed on the power shaft changer. The push rod, the telescopic end of the switching electric push rod is connected to the drive shaft through a bearing seat. When the telescopic end of the switching electric push rod extends, it drives the drive shaft to move, causing transmission gear one and transmission gear two to mesh, thereby driving the motor to drive the air pump to rotate. When the telescopic end of the switching electric push rod retracts, transmission gear one and transmission gear two disengage, and the air pump stops rotating. In the water replenishment and priming mode, the drive controller controls the extension of the switching electric push rod to drive the drive motor to drive the air pump to rotate. The air pump injects air into the water tank body through the air inlet connector, pushing the sliding piston plate to force the clean water in the water tank body into the multi-way electric valve through the water guide connector and the water replenishment connector. At the same time, the drive controller controls the multi-way electric valve to switch to the mode where the water replenishment connector is connected to the water inlet of the multi-way electric valve, and the first water outlet and the second water outlet are connected. With all outlet valves closed, clean water flows backward through the inlet of the multi-way electric valve into the outlet of the water pump assembly, filling the pump chamber until the water pressure detected by the pressure sensor reaches the preset value. After the water replenishment is completed, the drive controller controls the electric push rod to retract, stopping the air pump, and controls the multi-way electric valve to switch to the water supply valve position where the first outlet is connected to the outlet of the water pump assembly. The drive controller is electrically connected to the interactive controller, the multi-way electric valve, the air pump, the power shaft changer, the drive motor, and the pressure sensor. The interactive controller's interactive board is equipped with a PID control module, a multi-mode scene module, a start / stop logic module, a water shortage protection module, a WiFi remote intelligent control module, a multi-pump collaboration module, and a user interaction module.

[0007] The working principle of this invention: This booster pump is placed directly on the ground through the bottom of the outer casing assembly, or it is wall-mounted by being installed on the left or right side of the outer casing assembly through the mounting base; the first outlet end of the multi-way electric valve is used to connect to the water supply pipeline, and the second outlet end is sealed with an outlet plug.

[0008] Water replenishment operation: Upon initial use or after water supply interruption, the drive controller extends the electric push rod, engaging transmission gear one and transmission gear two within the power shaft changer. The output shaft of the drive motor drives the air pump via the power shaft changer. The air pump delivers compressed air through the air inlet to the rear end of the water tank, pushing the sliding piston plate forward and forcing the pre-stored clean water in the water tank out through the water guide joint, which then delivers it through a pipeline to the water replenishment joint of the multi-way electric valve. Simultaneously, the drive controller switches the multi-way electric valve to the position where the water replenishment joint is connected to the inlet, and both the first and second outlets are closed. This allows clean water to flow backward through the inlet of the multi-way electric valve into the outlet of the water pump assembly, filling the pump chamber. The pressure sensor monitors the water pressure in real time; when the water pressure reaches the preset value, water replenishment is complete.

[0009] After the water replenishment is completed: the drive controller controls the electric push rod to retract, so that the first transmission gear and the second transmission gear disengage, and the air pump stops rotating; at the same time, it controls the multi-way electric valve to switch to the water supply valve position where the first water outlet is connected to the water outlet of the water pump assembly.

[0010] Normal water supply operation: The drive motor drives the water pump assembly to work. After the water flows through the check valve and enters the water pump assembly for pressurization, it is supplied to the user's pipeline through the first outlet of the multi-way electric valve. The pressure tank is used to buffer water pressure fluctuations and stabilize the system pressure. The pressure sensor collects the outlet water pressure signal in real time and transmits it to the drive controller.

[0011] Control and Regulation: The drive controller is electrically connected to the interactive controller, multi-way electric valve, air pump, power shaft changer, drive motor and pressure sensor respectively. The interactive controller's interactive board is equipped with a PID control module, a multi-mode scene module, a start-stop logic module, a water shortage protection module, a WiFi remote intelligent control module, a multi-pump collaboration module and a user interaction module. The modules work together to realize functions such as constant pressure water supply, multi-mode switching, automatic start-stop, water shortage protection, remote monitoring and multi-pump collaboration, thereby completing the automatic regulation and intelligent management of water pressure.

[0012] The outer cover assembly includes an outer cover base, with an inverted U-shaped outer cover detachably mounted on the upper end of the outer cover base. A control interface is located on the upper end of the outer cover. A front cover plate is detachably mounted on the front side of the outer cover base and the outer cover. A plate slot is opened on the front side of the front cover plate, and a decorative plate is embedded in the plate slot. One front end of a multi-way electric valve and a one-way valve extend out of the front cover plate and the decorative plate in sequence. One upper end of the multi-way electric valve extends out of the outer cover. Several ventilation holes are provided on the front cover plate. A rear cover plate is detachably mounted on the rear side of the outer cover base and the outer cover. An inner handle and several ventilation holes are provided on the rear cover plate. The inner handle is located above the ventilation holes. Outer cover decorative panels are detachably mounted on both the left and right sides of the outer cover. A mating seat is provided in the middle of each outer cover decorative panel. Several screw holes are provided on the mating seat. Several heat dissipation holes are opened on the outer cover decorative panel.

[0013] With the above structure, the outer casing assembly is supported by the outer casing base, and the control interface is located on the upper part of the outer casing for user interaction. A decorative panel is embedded in the mounting slot on the front side of the front cover. One end of the multi-way electric valve and the one-way valve both extend outwards through the front cover and the decorative panel. The upper end of the multi-way electric valve extends outwards through the outer casing for easy pipe connection. An inner handle facilitates lifting and carrying, and ventilation holes are used for rear air intake and front air exhaust for heat dissipation. The insertion socket and screw holes in the middle of the outer casing decorative panel are used to mate with the mounting bracket for wall mounting, and heat dissipation holes are used to assist in heat dissipation. The overall structure realizes the functions of detachable assembly, ventilation and heat dissipation, handling, and multi-directional installation of the outer casing.

[0014] The mounting base includes a T-shaped mounting base body, and a mating baffle is provided on the side of the mounting base body. The mating baffle is detachably mated inside the mating base. Two rows of mounting through holes are provided on the mounting base body, and the number and position of the mounting through holes in the lower row correspond to the screw holes.

[0015] With the above structure, the mounting base can be detachably inserted into the insertion seat in the middle of the outer cover panel through the insertion baffle on the side of the T-shaped mounting base body, so as to realize the quick hanging of the outer cover component on the mounting base; the mounting base body has two rows of mounting through holes, the number and position of the lower row of mounting through holes correspond to the number and position of the screw holes on the insertion seat, so as to facilitate the fixing by passing screws through the mounting through holes and screwing them into the screw holes, thereby installing the entire booster pump on a vertical surface such as a wall.

[0016] The water valve box assembly also includes an electric air valve located at the rear end of the water tank body. The electric air valve is electrically connected to the drive controller. After the water is replenished, the drive controller controls the electric air valve to open and release pressure. The sliding piston plate moves backward under the action of water pressure, and clean water is re-injected into the water tank body.

[0017] With the above structure, during water replenishment, the air pump delivers compressed air to the rear end of the water tank body through the air inlet connector, pushing the sliding piston plate forward. This forces clean water from inside the water tank through the water guide connector and the water replenishment connector into the multi-way electric valve, thus replenishing the water pump assembly. After water replenishment is complete, the drive controller opens the electric air valve to release pressure, reducing the internal air pressure of the water tank body. Under the action of water pressure (from the water supply pipeline or the water pump assembly side), the sliding piston plate moves backward, allowing clean water to re-inject into the water tank body. The sliding piston plate then returns to its original position, and the electric air valve closes.

[0018] A sprocket and chain pair one is provided between the input shaft of the power shaft changer and the rear end of the output shaft of the drive motor, and a sprocket and chain pair two is provided between the output shaft of the power shaft changer and the input shaft of the air pump.

[0019] With the above structure, when the air pump needs to be driven, the telescopic end of the switching electric actuator extends, driving the transmission shaft to move via the bearing housing. This causes the two transmission gears on the transmission shaft to mesh with the transmission gears on the inner ends of the input and output shafts, respectively. This transmits the torque of the drive motor through the input shaft, transmission gears one and two to the output shaft, thereby driving the input shaft of the air pump to rotate, and the air pump injects air into the air inlet. When the air pump is not needed, the switching electric actuator retracts, and the transmission shaft moves, disengaging transmission gears one and two, thus interrupting power transmission.

[0020] The drive controller includes a heat sink, which is detachably mounted on the upper part of the drive motor housing. A junction box is detachably mounted on the upper part of the heat sink. The junction box contains a frequency converter main board, and a junction box cover is mounted on the upper part of the junction box. The frequency converter main board has a pressure cable, a power connector, and several data cables. The pressure cable is connected to a pressure sensor, and the several data cables are respectively connected to the drive motor, the switching electric push rod, and the multi-way electric valve.

[0021] With the above structure, the inverter mainboard is located inside the junction box, which is equipped with a pressure cable, a power connector, and several data cables. The pressure cable connects to the pressure sensor to receive pressure detection signals; the data cables connect to the drive motor, the switching electric actuator, and the multi-way electric valve, respectively, to transmit control commands and drive signals; the power connector is used to connect to an external power source to power the drive controller and connected components. Thus, the drive controller can acquire pressure signals and control the drive motor, the switching electric actuator, and the multi-way electric valve.

[0022] The interactive controller includes an interactive box, which is detachably mounted on the upper part of the junction box cover. A wire hole is provided at the bottom of the interactive box, and an interactive circuit board is provided inside the wire hole. A data cable passes through the wire hole and is connected to the interactive circuit board. The interactive circuit board is provided with several displays, several control buttons and several indicator lights. The interactive circuit board is located directly below the control interface, and the several displays, several control buttons and several indicator lights correspond to several functional areas of the control interface.

[0023] In this structure, one data cable passes through a wire hole and connects to the interactive board for transmitting control signals and data. The interactive board is equipped with several displays, control buttons, and indicator lights, and is located directly below the control interface, so that the displays, control buttons, and indicator lights correspond to the positions of several functional areas on the control interface. The user presses a functional area on the control interface to trigger the corresponding control button. The interactive board then sends the operation command to the drive controller via the data cable. Simultaneously, the driving controller transmits the operating status information back to the interactive board via the data cable, which is then displayed visually on the displays and indicator lights, thus realizing the human-machine interaction function.

[0024] The water pump assembly includes a water pump body and a mounting screw. The mounting screw is fixed to the front end of the output shaft of the drive motor, and the water pump body is fixed to the front end of the drive motor housing. The mounting screw is provided with, from front to back, an inlet guide vane, a front-middle impeller, an inlet guide vane, a rear-middle impeller, an outlet guide vane, a rear impeller, a bushing, and a sealing sleeve. The front and front-middle impellers are located inside the corresponding inlet guide vanes, and the rear-middle impeller is located inside the corresponding inlet guide vane. Inside, the impeller located at the rear is inside the outlet guide vane. The front end of the mounting screw is equipped with a self-locking nut, which abuts against the front end face of the inlet guide vane. The inlet guide vane, the impeller located at the front, the inlet guide vane, the impeller located at the front middle, the inlet guide vane, the impeller located at the rear middle, the outlet guide vane, the impeller located at the rear, the bushing, the sealing sleeve, and the self-locking nut are all located inside the pump body and form a water guiding cavity with the pump body. The one-way valve is connected to the front inlet end of the pump body, and the upper outlet end of the pump body is connected to the inlet end of the multi-way electric valve.

[0025] With the above structure, the output shaft of the drive motor rotates the mounting screw. The inlet guide vane, the impeller on the front side, the inlet guide vane, the impeller on the front middle side, the inlet guide vane, the impeller on the rear middle side, the outlet guide vane, the impeller on the rear side, the liner, and the sealing sleeve on the mounting screw rotate synchronously with the screw. Water flows through the one-way valve from the front inlet end of the pump body into the guide chamber. Under the centrifugal force of the impeller, it is pressurized step by step. After being guided by the inlet and outlet guide vanes, it is output from the upper outlet end of the pump body to the multi-way electric valve. Self-locking nuts axially lock the inlet guide vane and all impellers, guide vanes, liners, etc., onto the mounting screw, ensuring stability and sealing during rotation.

[0026] The PID control module consists of a user-defined target pressure input interface, a PID calculation unit, a variable frequency drive unit, and a speed feedback and closed-loop control unit. It collects the outlet water pressure in real time and compares it with the user-defined value. After processing by the PID algorithm, it outputs a variable frequency drive signal to adjust the motor speed and achieve stable water pressure output. It supports adaptive adjustment of PID parameters to improve system response speed and stability, and reduce pressure overshoot and water hammer effect.

[0027] The multi-mode scenario module consists of a working mode selection unit, a pressurization mode control logic unit, a speed mode control logic unit, a water tower timing mode control logic unit, and a mode parameter storage and retrieval unit. Supports switching between multiple working modes: boost mode, speed mode, and water tower timer mode.

[0028] The start / stop logic module consists of a water usage / outage status identification algorithm unit, an automatic start logic unit, an automatic stop logic unit, and a frequent start / stop protection unit. The system automatically shuts down when water usage stops or pipeline pressure reaches shutdown conditions, preventing idling and energy waste. It supports differential pressure shutdown parameter settings to prevent frequent start-stop cycles caused by low water flow. If water usage is detected again after shutdown, it can quickly restart.

[0029] The water shortage protection module consists of a power detection unit, a water shortage judgment logic, a water shortage fault triggering and timing unit, an automatic shutdown execution unit, and a water supply detection and automatic recovery unit. Simultaneously monitoring pipeline pressure and motor power, a water shortage is detected after a set water shortage detection time. The system automatically shuts down when water is insufficient to prevent the pump from running dry and being damaged. After shutdown, it actively checks for water supply every minute, or automatically identifies water supply through pressure / power changes and resolves the water shortage fault, automatically resuming operation.

[0030] The WiFi remote intelligent control module consists of a WiFi communication module, a device network configuration and connection management unit, a remote control protocol stack unit, a data upload and download unit, and a cloud / APP data synchronization unit. Connecting to the home network via WiFi enables remote communication between the water pump and a mobile app. Users can remotely monitor the pump's operating status. Remote adjustment of parameters such as target pressure, target speed, and operating mode is supported. Remote on / off control is also included. Real-time push notifications for faults are also supported.

[0031] The multi-pump coordination module consists of a communication interface between the main pump and the auxiliary pump, a coordination control algorithm unit, a load distribution logic unit, and a fault switching and redundancy management unit. In high-flow or multi-story water supply scenarios, the system enables coordinated operation of the variable frequency main pump and auxiliary pump. It dynamically adjusts the operating status and output of each pump based on total water demand, balancing the load and improving overall system efficiency and reliability. In the event of a main pump failure, it automatically switches to the auxiliary pump to maintain basic water supply.

[0032] The user interaction module consists of a user login and device binding management unit, a device status display interface, a remote control interface, a fault and alarm push unit, a data recording and analysis unit, and a scene linkage setting interface. It provides a graphical mobile app interface, allowing users to easily view water pump operating data and status. Remote parameter settings and mode switching are supported. Real-time fault alarm information is pushed out, along with fault code guidance. Historical operating data is recorded, generating energy consumption trend reports to provide users with energy-saving suggestions. Abnormal leakage early warning functions, such as continuous nighttime water usage monitoring, are supported. Integration with smart home systems is reserved.

[0033] Compared with existing technologies, this permanent magnet variable frequency booster pump with automatic water pressure regulation function has the following advantages: It can automatically replenish water upon first use or when water is scarce, eliminating the need for manual pump priming; it uses a pressure sensor and PID closed-loop control to adjust the motor speed in real time, achieving constant pressure output and reducing water hammer effect; it supports three intelligent modes: pressurization, speed, and water tower timer, automatically recognizing water usage start and stop to avoid idling and frequent start-stop; it has multiple safety protections and fault self-diagnosis features, including water shortage, overpressure, overcurrent, overtemperature, and leakage protection; it is equipped with WiFi remote intelligent control and a mobile APP, enabling remote monitoring, receiving fault push notifications, and recording energy consumption data to provide water-saving warnings; multi-pump collaboration can achieve load balancing and fault switching between main and auxiliary pumps; the outer casing is detachable, allowing for multi-directional installation, with a compact structure and good heat dissipation. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0035] Figure 2 This is a schematic diagram of the structure of the present invention when removing the outer cover assembly.

[0036] Figure 3 This is an exploded structural diagram of the present invention.

[0037] Figure 4 This is a schematic diagram of the interactive controller in this invention.

[0038] Figure 5 This is a schematic diagram of the drive controller in this invention.

[0039] Figure 6 This is an exploded structural diagram of the water pump assembly and drive motor in this invention.

[0040] Figure 7 This is a schematic diagram of the installation process of the present invention.

[0041] Figure 8 This is a schematic diagram of the control interface of the present invention.

[0042] Figure 9 This is a system block diagram of the present invention.

[0043] In the diagram: 1. Outer casing assembly; 2. Power connector; 3. Mounting base; 4. Outlet plug; 5. Multi-way electric valve; 6. Check valve; 7. Decorative panel; 8. Pressure tank; 9. Water pump assembly; 10. Water valve box assembly; 11. Air pump; 12. Power shaft changer; 13. Drive motor; 14. Drive controller; 15. Interactive controller; 16. Outer casing; 17. Control interface; 18. Rear cover; 19. Inner handle; 20. Ventilation hole; 21. Outer casing decorative panel; 22. Mounting base body; 23. Insertion baffle; 24. Insertion seat; 25. Heat dissipation hole; 26. Outer casing base; 27. Water tank body; 28. Water guide connector; 29. ​​Electric air valve; 30. Air inlet connector. 31. Switching electric actuator; 32. Front cover plate; 33. Plate slot; 34. Wire hole; 35. Interaction box; 36. Mounting screw seat; 37. Interaction board; 38. Display screen; 39. Control button; 40. Junction box cover; 41. Data cable; 42. Inverter main board; 43. Pressure cable; 44. Junction box base; 45. Heat sink; 46. Liner plate; 47. Water supply connector; 48. Water pump body; 49. Pressure sensor; 50. Self-locking nut; 51. Inlet guide vane; 52. Impeller; 53. Inlet guide vane; 54. Outlet guide vane; 55. Cooling fan blade; 56. Sealing sleeve; 57. Mounting screw; 58. Sprocket and chain pair one; 59. Sprocket and chain pair two. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] like Figures 1-9As shown, this permanent magnet variable frequency booster pump with automatic water pressure regulation function includes an outer casing assembly 1. A mounting base 3 is detachably provided on the left or right side of the outer casing assembly 1. Inside the outer casing assembly 1, from bottom to top, are arranged a water valve box assembly 10, a drive motor 13, a drive controller 14, and an interactive controller 15. A cooling fan 55 is provided at the rear end of the output shaft of the drive motor 13, and a water pump assembly 9 is provided at the front end of the output shaft of the drive motor 13. The outlet end of the water pump assembly 9 is connected to a multi-way electric valve 5. The multi-way electric valve 5 has an inlet end, a water supply connector 47, a first outlet end, a second outlet end, a sensor interface, and a tank interface. A pressure sensor 49 is provided on the sensor interface, a pressure tank 8 is provided on the tank interface, and an outlet plug 4 is provided on the second outlet end. Used to connect to water supply pipelines; the inlet end of the water pump assembly 9 is connected to a one-way valve 6, and the inside of the outer casing assembly 1 is also equipped with an air pump 11 and a power shaft changer 12. The power shaft changer 12 is connected to the rear end of the air pump 11 and the drive motor 13 respectively. The water valve box assembly 10 is connected to the water supply connector 47 of the multi-way electric valve 5 and the air pump 11 through pipelines. The drive controller 14 is electrically connected to the interactive controller 15, the multi-way electric valve 5, the air pump 11, the power shaft changer 12, the drive motor 13 and the pressure sensor 49 respectively. The interactive board 37 of the interactive controller 15 is equipped with a PID control module, a multi-mode scene module, a start-stop logic module, a water shortage protection module, a WiFi remote intelligent control module, a multi-pump collaboration module and a user interaction module.

[0046] This booster pump can be placed directly on the ground through the bottom of the outer casing assembly 1, or it can be installed on the wall by mounting the mounting base 3 on the left or right side of the outer casing assembly 1. When this booster pump is working, the drive controller 14 is electrically connected to the interactive controller 15, the multi-way electric valve 5, the air pump 11, the power shaft changer 12, the drive motor 13 and the pressure sensor 49 respectively. Pressure sensor 49 collects water pressure in real time and transmits the signal to drive controller 14. The interactive board 37 of interactive controller 15 is equipped with PID control module, multi-mode scene module, start-stop logic module, water shortage protection module, WiFi remote intelligent control module, multi-pump collaboration module and user interaction module for comprehensive control. It collects various information in real time, such as water pressure, and compares it with the user set value. After processing by PID algorithm, it outputs frequency conversion drive signal to adjust the motor speed and realize stable water pressure output. When the water valve box assembly 10 is filled with clean water, the drive motor 13 drives the power shaft changer 12 to rotate when the water pump is used for the first time. The power shaft changer 12 outputs power to drive the air pump 11 to operate. The air pump 11 injects air into the water valve box assembly 10, injecting the clean water inside the water valve box assembly 10 into the multi-way electric valve 5, until the pressure sensor 49 detects that the water pressure has reached the level that fills the water pump assembly 9 with clean water, thus completing the water replenishment and priming work.

[0047] The drive motor 13 drives the water pump assembly 9 to work. Water flows through the one-way valve 6 and enters the water pump assembly 9 for pressurization. Then it is output by the multi-way electric valve 5. The pressure tank 8 is used to stabilize the water pressure. At this time, the power shaft changer 12 releases the output power, the air pump 11 stops injecting air, and the water valve box assembly 10 depressurizes. Clean water is then injected into the water valve box assembly 10. The cooling fan 55 is installed at the rear end of the output shaft of the drive motor 13 for motor cooling; at the same time, when the water temperature inside the water valve box assembly 10 rises, the water can be changed, i.e., cold water is introduced, which helps to cool down the drive motor 13.

[0048] The outer cover assembly 1 includes an outer cover base 26. An inverted U-shaped outer cover 16 is detachably mounted on the upper end of the outer cover base 26. A control interface 17 is located on the upper end of the outer cover 16. A front cover plate 32 is detachably mounted on the front side of the outer cover base 26 and the outer cover 16. A plate groove 33 is formed on the front side of the front cover plate 32, and a decorative plate 7 is embedded in the plate groove 33. One front end of the multi-way electric valve 5 and the one-way valve 6 extend sequentially from the front cover plate 32 and the decorative plate 7, respectively. One upper end of the multi-way electric valve 5 extends outwards from the outer cover. The cover 16 has a front cover plate 32 with several ventilation holes 20. The outer cover base 26 and the rear side of the outer cover 16 are detachably provided with a rear cover plate 18. The rear cover plate 18 is provided with an inner handle 19 and several ventilation holes 20. The inner handle 19 is located above the several ventilation holes 20. The left and right sides of the outer cover 16 are detachably provided with outer cover decorative panels 21. The middle of the outer cover decorative panel 21 is provided with a mating seat 24. The mating seat 24 is provided with several screw holes. The outer cover decorative panel 21 is provided with several heat dissipation holes 25.

[0049] The outer casing assembly 1 is supported by the outer casing base 26. The control interface 17 is located on the upper part of the outer casing 16 for user interaction. The decorative panel 7 is embedded in the mounting groove 33 on the front side of the front cover plate 32. The front end of the multi-way electric valve 5 and the one-way valve 6 both extend outward through the front cover plate 32 and the decorative panel 7. The upper end of the multi-way electric valve 5 extends outward through the outer casing 16 for easy pipe connection. The inner handle 19 facilitates lifting and carrying. The ventilation hole 20 is used for rear air intake and front air exhaust for heat dissipation. The insertion seat 24 and its screw hole in the middle of the outer casing decorative panel 21 are used to cooperate with the mounting base 3 for wall mounting. The heat dissipation hole 25 is used for auxiliary heat dissipation. The overall structure realizes the functions of detachable assembly, ventilation and heat dissipation, transportation and multi-directional installation of the outer casing.

[0050] Mounting base 3 includes a T-shaped mounting base body 22. The side of the mounting base body 22 is provided with a mating baffle 23. The mating baffle 23 is detachably mated inside the mating base 24. The mounting base body 22 has two rows of mounting through holes, and the number and position of the mounting through holes in the lower row correspond to the screw holes.

[0051] The mounting base 3 is detachably inserted into the insertion seat 24 in the middle of the outer cover panel 21 via the insertion baffle 23 on the side of the T-shaped mounting base body 22, so that the outer cover assembly 1 can be quickly attached to the mounting base 3. The mounting base body 22 has two rows of mounting through holes, the number and position of which of the lower row of mounting through holes correspond to the number of screw holes on the insertion seat 24, so that screws can be passed through the mounting through holes and screwed into the screw holes for fixing, thereby installing the entire booster pump on a vertical surface such as a wall.

[0052] The water valve box assembly 10 includes a water tank body 27, which is located inside the upper part of the outer cover base 26. A sliding piston plate is slidably provided inside the water tank body 27. An electric air valve 29 and an air inlet connector 30 are provided at the rear end of the water tank body 27. The air outlet of the air pump 11 is connected to the air inlet connector 30. A water guide connector 28 is provided at the front end of the water tank body 27. A water supply connector 47 is provided on the multi-way electric valve 5. The water supply connector 47 and the water guide connector 28 are connected by a pipe.

[0053] During operation, the air pump 11 draws air into the rear end of the water tank body 27 through the air inlet connector 30, pushing the sliding piston plate forward. This forces the clean water inside the water tank body 27 out through the water guide connector 28, and sends it through the pipe and the water replenishment connector 47 into the multi-way electric valve 5. The water is then drained through one of the first or second outlets of the multi-way electric valve 5 that is not connected to the water supply pipe. The water is then replaced, i.e., cold water is added to the water tank body 27. After the water replenishment is completed, the electric air valve 29 opens to release pressure. When the water pump assembly 9 pumps water, it injects clean water back into the water tank body 27, pushing the sliding piston plate backward to its initial position. The electric air valve 29 then closes. When the temperature of the water inside the water tank body 27 rises, the clean water inside the water tank body 27 can be forced out through the water guide connector 28 and drained through the multi-way electric valve 5. The water is then replaced, i.e., cold water is added to the water tank body 27, resulting in a good cooling effect.

[0054] A sprocket and chain pair 58 is provided between the input shaft of the power shaft changer 12 and the rear end of the output shaft of the drive motor 13. A drive shaft is slidably provided inside the power shaft changer 12 and can rotate inside the power shaft changer 12. Two drive gears are fixed on the drive shaft. Both the input shaft and the output shaft of the power shaft changer 12 are provided with drive gears. A switching electric push rod 31 is fixed on the power shaft changer 12. A bearing seat is fixed at the telescopic end of the switching electric push rod 31. The drive shaft is fixed inside the inner ring of the bearing seat. A sprocket and chain pair 59 is provided between the output shaft of the power shaft changer 12 and the input shaft of the air pump 11. When the telescopic end of the switching electric push rod 31 extends, it drives the drive shaft to move through the bearing seat, so that the drive gears 1 and 2 mesh respectively. Thus, the input shaft of the power shaft changer 12 drives the output shaft of the power shaft changer 12 to rotate, thereby driving the input shaft of the air pump 11 to rotate.

[0055] When the air pump 11 needs to be driven, the telescopic end of the switching electric actuator 31 extends, driving the transmission shaft to move via the bearing housing. This causes the two transmission gears on the transmission shaft to mesh with the transmission gears at the inner ends of the input and output shafts, respectively. This transmits the torque of the drive motor 13 to the output shaft via the input shaft, transmission gears 1 and 2, thereby driving the input shaft of the air pump 11 to rotate. The air pump 11 then injects air into the air inlet connector 30. During this switching process, the drive motor 13 decelerates to near or completely stop before engaging again. When the air pump 11 is not needed, the switching electric actuator 31 retracts, causing the transmission shaft to move and disengage transmission gears 1 and 2, interrupting power transmission.

[0056] The drive controller 14 includes a heat sink 45, which is detachably mounted on the upper part of the housing of the drive motor 13. A junction box 44 is detachably mounted on the upper part of the heat sink 45. The inverter main board 42 is located inside the junction box 44. A junction box cover 40 is located on the upper part of the junction box 44. The inverter main board 42 is equipped with a pressure cable 43, a power connector 2, and several data cables 41. The pressure cable 43 is connected to a pressure sensor 49, and the several data cables 41 are respectively connected to the drive motor 13, the switching electric push rod 31, and the multi-way electric valve 5.

[0057] The inverter mainboard 42 is located inside the junction box 44, and it is equipped with a pressure cable 43, a power connector 2, and several data cables 41. The pressure cable 43 is connected to the pressure sensor 49 to receive pressure detection signals. The several data cables 41 are respectively connected to the drive motor 13, the switching electric actuator 31, and the multi-way electric valve 5 to transmit control commands and drive signals. The power connector 2 is used to connect to an external power source to power the drive controller 14 and its connected components. Thus, the drive controller 14 realizes the acquisition of pressure signals and the control of the drive motor 13, the switching electric actuator 31, and the multi-way electric valve 5.

[0058] The interactive controller 15 includes an interactive box 35, which is detachably mounted on the upper part of the junction box cover 40. A wire hole 34 is provided at the bottom of the interactive box 35. An interactive circuit board 37 is provided inside the wire hole 34. A data cable 41 passes through the wire hole 34 and is connected to the interactive circuit board 37. The interactive circuit board 37 is provided with several displays 38, several control buttons 39 and several indicator lights. The interactive circuit board 37 is located directly below the control interface 17, and the several displays 38, several control buttons 39 and several indicator lights correspond to several functional areas of the control interface 17.

[0059] One of the data cables 41 passes through the wire hole 34 and connects to the interactive board 37 for transmitting control signals and data. The interactive board 37 is equipped with several displays 38, several control buttons 39, and several indicator lights. The interactive board 37 is located directly below the control interface 17, so that the displays 38, control buttons 39, and indicator lights correspond to several functional areas of the control interface 17. When the user presses a functional area on the control interface 17, the corresponding control button 39 is triggered. The interactive board 37 sends the operation command to the drive controller 14 via the data cable 41. At the same time, the operating status information fed back by the drive controller 14 is transmitted back to the interactive board 37 via the data cable 41 and displayed on the displays 38 and indicator lights, realizing the human-computer interaction function.

[0060] The water pump assembly 9 includes a water pump body 48 and a mounting screw 57. The mounting screw 57 is fixed to the front end of the output shaft of the drive motor 13. The water pump body 48 is fixed to the front end of the housing of the drive motor 13. The mounting screw 57 is provided with, from front to back, an inlet guide vane 51, an impeller 52 located on the front side, an inlet guide vane 53, an impeller 52 located on the front middle side, an inlet guide vane 53, an impeller 52 located on the rear middle side, an outlet guide vane 54, an impeller 52 located on the rear side, a bushing 46, and a sealing sleeve 56. The impellers located on the front side and the front middle side are respectively located inside the inlet guide vanes at their corresponding positions, and the impeller located on the rear middle side is located inside the inlet guide vanes at their corresponding positions. The impeller located at the rear is inside the outlet guide vane. The front end of the mounting screw 57 is provided with a self-locking nut 50, which abuts against the front end face of the inlet guide vane 51. The inlet guide vane 51, the impeller 52 located at the front, the inlet guide vane 53, the impeller 52 located at the front middle, the inlet guide vane 53, the impeller 52 located at the rear middle, the outlet guide vane 54, the impeller 52 located at the rear, the bushing 46, the sealing sleeve 56, and the self-locking nut 50 are all located inside the pump body 48 and form a water guide cavity with the pump body 48. The one-way valve 6 is connected to the front inlet end of the pump body 48, and the upper outlet end of the pump body 48 is connected to the inlet end of the multi-way electric valve 5.

[0061] The output shaft of the drive motor 13 drives the mounting screw 57 to rotate. The inlet guide vane 51, the impeller 52 on the front side, the inlet guide vane 53, the impeller 52 on the front middle side, the inlet guide vane 53, the impeller 52 on the rear middle side, the outlet guide vane 54, the impeller 52 on the rear side, the liner 46, and the sealing sleeve 56 on the mounting screw 57 rotate synchronously with the screw. Water flows through the one-way valve 6 from the front inlet end of the pump body 48 into the guide chamber. Under the centrifugal force of the impeller 52, it is pressurized step by step. After being guided by the inlet guide vane 53 and the outlet guide vane 54, it is output from the upper outlet end of the pump body 48 to the multi-way electric valve 5. The self-locking nut 50 axially locks the inlet guide vane 51 and each impeller, guide vane, liner, etc., on the mounting screw 57 to ensure stability and sealing during rotation.

[0062] The PID control module consists of a user-defined target pressure input interface, a PID calculation unit, a variable frequency drive unit, and a speed feedback and closed-loop control unit. It collects the outlet water pressure in real time and compares it with the user-defined value. After processing by the PID algorithm, it outputs a variable frequency drive signal to adjust the motor speed and achieve stable water pressure output. It supports adaptive adjustment of PID parameters (such as dynamically adjusting Kp and Ki according to the pressure fluctuation trend) to improve system response speed and stability, and reduce pressure overshoot and water hammer effect.

[0063] The multi-mode scenario module consists of a working mode selection unit, a pressurization mode control logic unit, a speed mode control logic unit, a water tower timing mode control logic unit, and a mode parameter storage and retrieval unit. Supports switching between multiple working modes: Boost mode: The speed is automatically adjusted to maintain constant pressure based on the user-defined target pressure.

[0064] Speed ​​mode: The target speed is set by the user and is suitable for scenarios where flow rate is a specific requirement rather than pressure.

[0065] Water tower timer mode: In water tower supply scenarios, it automatically starts and stops at set time intervals to achieve periodic water replenishment.

[0066] Each mode allows for independent setting of relevant parameters (such as start-up pressure, shutdown pressure difference, timer, etc.).

[0067] The start / stop logic module consists of a water usage / outage status identification algorithm unit, an automatic start logic unit, an automatic stop logic unit, and a frequent start / stop protection unit. The system automatically shuts down when water usage stops or pipeline pressure reaches shutdown conditions, preventing idling and energy waste. It supports differential pressure shutdown parameter settings (such as b4 differential pressure shutdown coefficient, bB differential pressure shutdown safety power) to prevent frequent start-stop cycles caused by low water flow. If water usage is detected again after shutdown, it can quickly restart.

[0068] The water shortage protection module consists of a power detection unit, a water shortage judgment logic, a water shortage fault triggering and timing unit, an automatic shutdown execution unit, and a water supply detection and automatic recovery unit. Simultaneously monitor pipeline pressure (≤b5 water shortage pressure threshold) and motor power (≤b7 water shortage power threshold), and determine water shortage after a set water shortage detection time (b6). Automatically shut down when water is scarce to prevent pump damage from dry running. After shutdown, actively check for water supply every 30 minutes, or automatically identify water supply through pressure / power changes and resolve the water shortage fault, automatically resuming operation.

[0069] The WiFi remote intelligent control module consists of a WiFi communication module, a device network configuration and connection management unit, a remote control protocol stack unit, a data upload and download unit, and a cloud / APP data synchronization unit. Connecting to the home network via WiFi enables remote communication between the water pump and a mobile app. Users can remotely view the pump's operating status (current pressure, speed, power, fault information, etc.). Remote adjustment of parameters such as target pressure, target speed, and operating mode is supported. Remote on / off control is also included. Real-time fault push notifications are supported.

[0070] The multi-pump coordination module consists of a communication interface between the main pump and the auxiliary pump, a coordination control algorithm unit, a load distribution logic unit, and a fault switching and redundancy management unit. In high-flow or multi-story water supply scenarios, the system enables coordinated operation of the variable frequency main pump and auxiliary pump. It dynamically adjusts the operating status and output of each pump based on total water demand, balancing the load and improving overall system efficiency and reliability. In the event of a main pump failure, it automatically switches to the auxiliary pump to maintain basic water supply.

[0071] The user interaction module consists of a user login and device binding management unit, a device status display interface, a remote control interface, a fault and alarm push unit, a data recording and analysis unit, and a scene linkage setting interface. It provides a graphical mobile app interface, allowing users to easily view water pump operating data and status. Remote parameter settings and mode switching are supported. Real-time fault alarm information is pushed out, along with fault code guidance. Historical operating data is recorded, generating energy consumption trend reports to provide users with energy-saving suggestions. Abnormal leakage early warning functions, such as continuous nighttime water usage monitoring, are supported. Integration with smart home systems is reserved. Working principle of the invention: I. Installation and Selection of Water Outlet Direction Depending on the installation location, the upper and front ends of the multi-way electric valve 5 can both be used as water outlets. The water outlets that do not require water output are sealed with outlet plugs 4. The entire unit can be placed directly on the ground via the bottom of the outer casing assembly 1, or mounted on the left or right side of the outer casing assembly 1 via the mounting base 3, thus fixing the booster pump to a vertical surface such as a wall.

[0072] II. Automatic water replenishment after initial use or in case of water shortage The water valve box assembly 10 is pre-filled with clean water. Upon initial startup, the drive controller 14 controls the extension of the switching electric push rod 31, causing the transmission gear one and transmission gear two inside the power shaft changer 12 to mesh. The torque of the drive motor 13 is transmitted to the air pump 11 via the sprocket chain pair one, the drive shaft, and the sprocket chain pair two, driving the air pump 11 to operate. The air pump 11 sends compressed air into the rear end of the water tank body 27 through the air inlet connector 30, pushing the sliding piston plate forward and forcing the clean water in the water tank body 27 out through the water guide connector 28, and sending it through the pipeline to the water supply connector 47 of the multi-way electric valve 5. At the same time, the drive controller 14 controls the multi-way electric valve 5 to switch its valve position, connecting its water supply connector 47 to the water inlet end, and closing both the first and second water outlet ends. Clean water flows backward through the water inlet end of the multi-way electric valve 5 into the water outlet end of the water pump assembly 9, and then is injected backward from the water outlet end side of the water pump assembly 9 to fill the pump chamber of the water pump assembly 9. Pressure sensor 49 monitors water pressure in real time (at this time, the sensor interface is connected to the inlet of multi-way electric valve 5, so the water pressure on the pump chamber side can be detected). When the water pressure reaches the preset value that fills the pump chamber of water pump assembly 9 with clean water, the drive controller 14 determines that the water replenishment is complete, controls the switching electric push rod 31 to retract, the power of the power shaft changer 12 is interrupted, and the air pump 11 stops injecting air; at the same time, the electric air valve 29 opens to release pressure, and clean water is re-injected into the water tank body 27 under the action of the water supply pressure. The sliding piston plate moves back to its position, the electric air valve 29 closes, and the water replenishment is completed.

[0073] III. Constant pressure control during normal operation The drive motor 13 rotates the mounting screw 57 of the water pump assembly 9, causing the inlet guide vane 51, multi-stage impeller 52, inlet guide vane 53, and outlet guide vane 54 to rotate with the screw. Water flows through the one-way valve 6 into the guide chamber, where it is pressurized step-by-step by the centrifugal force of the multi-stage impeller 52. Guided by the outlet guide vane 54, the water is output from the outlet end on the upper side of the water pump body 48 to the multi-way electric valve 5, and then supplied to the user's pipeline from the selected outlet end. The pressure tank 8 is used to buffer water pressure fluctuations and stabilize the system pressure.

[0074] Pressure sensor 49 collects the outlet water pressure in real time and transmits it to drive controller 14. The PID control module on the interactive controller 15 compares the actual pressure with the user-set target pressure, calculates the deviation through the PID algorithm, and outputs a variable frequency drive signal to drive motor 13 to dynamically adjust the motor speed, keeping the outlet water pressure constant near the set value. The PID control module supports adaptive parameter adjustment, dynamically changing Kp and Ki according to the pressure fluctuation trend to reduce overshoot and water hammer effect.

[0075] IV. Multi-mode operation and intelligent start-stop Users can select the working mode through the control interface 17 or the mobile APP: Boost mode: Automatically adjusts the speed to maintain constant pressure by using the target pressure as the control target.

[0076] Speed ​​mode: Targets a fixed rotation speed and is suitable for scenarios with specific flow requirements.

[0077] Water tower timer mode: Automatically starts and stops at set time intervals to achieve periodic water replenishment.

[0078] The start / stop logic module identifies water usage status through flow sensors or pressure fluctuations: it automatically starts when water usage is detected and automatically stops when water usage stops or pipeline pressure reaches shutdown conditions (such as differential pressure shutdown coefficient b4, minimum power bB) to prevent idling and frequent start / stop. If water usage is detected again after shutdown, it quickly restarts.

[0079] V. Multiple security protections Water shortage protection: Simultaneously monitors pipeline pressure (≤b5) and motor power (≤b7). After a set water shortage detection time of b6, it is determined to be water shortage and automatically shuts down. After shutdown, it actively detects water supply every 30 minutes and automatically resumes operation when water supply is restored.

[0080] Self-diagnosis of faults: The drive controller 14 has built-in detection logic for overvoltage, undervoltage, overcurrent, phase loss, overtemperature, sensor failure, leakage, etc. When a fault occurs, it will automatically stop and push the fault code through the display screen 38 or APP.

[0081] Heat dissipation: The heat dissipation fan 55 is installed at the rear end of the output shaft of the drive motor 13, and together with the ventilation hole 20 and heat dissipation hole 25 on the outer cover, a wind-cooling circulation is formed; when the water temperature inside the water valve box assembly 10 rises, the water can be replaced, i.e., cold water is introduced, which helps to cool down the drive motor 13.

[0082] VI. Intelligent Interconnection and User Interaction Local interaction: The user presses the control button 39 through the control interface 17 to trigger the corresponding button on the interactive board 37. The interactive controller 15 transmits the instruction to the drive controller 14 via the data cable 41. The operating status (pressure, speed, power, fault, etc.) fed back by the drive controller 14 is transmitted back to the interactive board 37 via the data cable 41 and is displayed visually by the display screen 38 and indicator lights.

[0083] Remote Interaction: The WiFi remote intelligent control module connects to the home network via a WiFi communication module, allowing users to remotely view operating data, adjust target pressure / speed, switch operating modes, and receive fault notifications via a mobile app.

[0084] Data services: The user interaction module records data such as cumulative runtime, number of starts and stops, and power consumption, generates energy consumption trend reports, and provides water-saving suggestions and abnormal leakage warnings (such as monitoring continuous water usage at night). An interface for integration with smart home systems is reserved.

[0085] Multi-pump collaboration: In multi-floor or high-flow scenarios, the multi-pump collaboration module can realize load distribution and fault switching between the variable frequency main pump and the auxiliary pump, thereby improving system reliability and efficiency.

[0086] VII. Overall Logical Flow The entire unit completes a system self-test upon power-up, determining whether it is in initial use or water supply interruption recovery mode. If it is the first time using the unit or there is a water shortage, automatic water replenishment is initiated. The unit then enters standby mode, where the start / stop logic module monitors water demand. Upon detecting water usage, the drive motor starts, and the PID control module maintains constant water pressure. The unit automatically stops when water usage ceases or when shutdown conditions are met. During operation, continuous safety protection measures are implemented for water shortage, over-temperature, and over-pressure. Users can monitor and adjust parameters locally or remotely. All modules work collaboratively under the unified coordination of the drive controller 14 to achieve fully automatic and intelligent automatic water pressure regulation.

[0087] In summary, automatic water replenishment and constant pressure water supply: the pump chamber is automatically filled when used for the first time or when there is a water shortage, eliminating the need for manual priming; the motor speed is adjusted in real time through a pressure sensor and PID closed loop to achieve stable water pressure output, reducing pressure fluctuations and water hammer effects.

[0088] Multi-mode intelligent operation: Supports three modes: boost, speed, and water tower timer, to adapt to different water use scenarios; intelligent start-stop logic automatically identifies water use status, avoiding idling and frequent start-stop, saving energy and extending motor life.

[0089] Multiple safety protections: It has self-diagnostic functions such as water shortage, overvoltage, undervoltage, overcurrent, overtemperature, leakage, and sensor failure. It automatically shuts down and pushes codes when a fault occurs; intelligent antifreeze and efficient heat dissipation design ensures reliability during low temperature and long-term operation.

[0090] Intelligent interconnection and data services: WiFi remote intelligent control supports viewing status, adjusting parameters, and receiving fault push notifications via mobile APP, and can be integrated into smart homes; it records operating data to generate energy consumption reports and provides water-saving suggestions and abnormal leakage warnings.

[0091] Structural optimization and collaborative capabilities: The outer casing is detachable and can be installed in multiple directions (floor-standing or wall-mounted), with good ventilation and heat dissipation; multiple pumps work together to achieve load balancing and fault switching between main and auxiliary pumps, adapting to high flow rates or multi-story water supply needs.

[0092] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A permanent magnet variable frequency booster pump with automatic water pressure regulation function, comprising an outer casing assembly (1), characterized in that, The outer casing assembly (1) is detachably provided with a mounting base (3) on its left or right side. Inside the outer casing assembly (1), from bottom to top, are arranged a water valve box assembly (10), a drive motor (13), a drive controller (14), and an interactive controller (15). The output shaft of the drive motor (13) is provided with a cooling fan (55) at its rear end. The output shaft of the drive motor (13) is provided with a water pump assembly (9). The water outlet of the water pump assembly (9) is connected to a multi-way electric valve (5). The multi-way electric valve (5) has a water inlet, a water supply connector (47), a first water outlet, and a second water outlet. The system includes two outlets, a sensor interface, and a tank interface. The sensor interface is equipped with a pressure sensor (49), and the tank interface is equipped with a pressure tank (8). The second outlet is equipped with an outlet plug (4), and the first outlet is used to connect to the water supply pipeline. The inlet of the water pump assembly (9) is connected to a check valve (6). The outer casing assembly (1) is also equipped with an air pump (11) and a power shaft changer (12). The water valve box assembly (10) includes a water tank body (27). A sliding piston plate is slidably provided inside the water tank body (27), and an air inlet is provided at the rear end of the water tank body (27). The air outlet of the air pump (11) is connected to the air inlet connector (30). The front end of the water tank body (27) is provided with a water guide connector (28). The water guide connector (28) is connected to the water supply connector (47) of the multi-way electric valve (5) through a pipe. The input shaft of the power shaft changer (12) is connected to the rear end of the output shaft of the drive motor (13). The output shaft of the power shaft changer (12) is connected to the input shaft of the air pump (11). The power shaft changer (12) is slidably and rotatably provided with a drive shaft inside. The drive shaft is fixed with a drive gear. The input and output shafts of the power shaft changer (12) are respectively equipped with transmission gears 2. The power shaft changer (12) is fixed with a switching electric push rod (31). The telescopic end of the switching electric push rod (31) is connected to the transmission shaft through a bearing seat. When the telescopic end of the switching electric push rod (31) extends, it drives the transmission shaft to move so that the transmission gear 1 meshes with the transmission gear 2, thereby driving the motor (13) to drive the air pump (11) to rotate. When the telescopic end of the switching electric push rod (31) retracts, the transmission gear 1 disengages from the transmission gear 2, and the air pump (11) stops rotating.In the water replenishment operation, the drive controller (14) controls the extension of the switching electric push rod (31) to drive the air pump (11) to rotate. The air pump (11) injects air into the water tank body (27) through the air inlet connector (30), pushing the sliding piston plate to press the clean water in the water tank body (27) into the multi-way electric valve (5) through the water guide connector (28) and the water replenishment connector (47). At the same time, the drive controller (14) controls the multi-way electric valve (5) to switch to the valve position where the water replenishment connector (47) is connected to the water inlet of the multi-way electric valve (5), and both the first and second water outlets are closed. This allows the clean water to flow backward through the water inlet of the multi-way electric valve (5) into the water outlet of the water pump assembly (9) and fill the pump chamber of the water pump assembly (9) until the pressure is reached. The water pressure detected by the force sensor (49) reaches the preset value; after the water replenishment is completed, the drive controller (14) controls the switching electric push rod (31) to retract, causing the air pump (11) to stop, and controls the multi-way electric valve (5) to switch to the water supply valve position where the first outlet end is connected to the outlet end of the water pump assembly (9); the drive controller (14) is electrically connected to the interactive controller (15), the multi-way electric valve (5), the air pump (11), the power shaft changer (12), the drive motor (13), and the pressure sensor (49), respectively. The interactive board (37) of the interactive controller (15) is equipped with a PID control module, a multi-mode scene module, a start / stop logic module, a water shortage protection module, a WiFi remote intelligent control module, a multi-pump collaboration module, and a user interaction module.

2. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 1, characterized in that, The outer cover assembly (1) includes an outer cover base (26), the upper end of which is detachably provided with an inverted U-shaped outer cover (16), the upper end of which is provided with a control interface (17), the front side of the outer cover base (26) and the outer cover (16) is detachably provided with a front cover plate (32), the front side of the front cover plate (32) is provided with a plate slot (33), the plate slot (33) is embedded with a decorative plate (7), the front end of the multi-way electric valve (5) and the one-way valve (6) extend out of the front cover plate (32) and the decorative plate (7) respectively, and the upper end of the multi-way electric valve (5) extends out of the front cover plate (32) and the decorative plate (7) respectively. The outer cover (16) has several ventilation holes (20) on the front cover plate (32). The outer cover base (26) and the rear side of the outer cover (16) are detachably provided with a rear cover plate (18). The rear cover plate (18) is provided with an inner handle (19) and several ventilation holes (20). The inner handle (19) is located above several ventilation holes (20). The left and right sides of the outer cover (16) are detachably provided with outer cover panels (21). The middle part of the outer cover panels (21) is provided with a mating seat (24). The mating seat (24) is provided with several screw holes. The outer cover panels (21) are provided with several heat dissipation holes (25).

3. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 2, characterized in that, The mounting base (3) includes a T-shaped mounting base body (22). The side of the mounting base body (22) is provided with a mating baffle (23). The mating baffle (23) is detachably mated inside the mating base (24). The mounting base body (22) has two rows of mounting through holes. The number and position of the mounting through holes in the lower row correspond to the number and position of the screw holes.

4. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 3, characterized in that, The water valve box assembly (10) also includes an electric air valve (29) located at the rear end of the water tank body (27). The electric air valve (29) is electrically connected to the drive controller (14). After the water is replenished, the drive controller (14) controls the electric air valve (29) to open and release pressure. The sliding piston plate moves backward under the action of water pressure, and clean water is re-injected into the water tank body (27).

5. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 4, characterized in that, A sprocket and chain pair one (58) is provided between the input shaft of the power shaft changer (12) and the rear end of the output shaft of the drive motor (13), and a sprocket and chain pair two (59) is provided between the output shaft of the power shaft changer (12) and the input shaft of the air pump (11).

6. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 5, characterized in that, The drive controller (14) includes a heat sink (45), which is detachably mounted on the upper end of the housing of the drive motor (13). A junction box seat (44) is detachably mounted on the upper end of the heat sink (45). A frequency converter main board (42) is mounted inside the junction box seat (44). A junction box cover (40) is mounted on the upper end of the junction box seat (44). A pressure cable (43), a power plug (2), and several data cables (41) are mounted on the frequency converter main board (42). The pressure cable (43) is connected to a pressure sensor (49). The several data cables (41) are respectively connected to the drive motor (13), the switching electric push rod (31), and the multi-way electric valve (5).

7. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 6, characterized in that, The interactive controller (15) includes an interactive box (35), which is detachably mounted on the upper end of the junction box cover (40). A wire hole (34) is provided at the bottom of the interactive box (35). An interactive board (37) is provided inside the wire hole (34). A data cable (41) passes through the wire hole (34) and is connected to the interactive board (37). The interactive board (37) is provided with several displays (38), several control buttons (39) and several indicator lights. The interactive board (37) is located directly below the control interface (17), and the several displays (38), several control buttons (39) and several indicator lights correspond to several functional areas of the control interface (17).

8. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 7, characterized in that, The pump assembly (9) includes a pump body (48) and a mounting screw (57). The mounting screw (57) is fixed to the front end of the output shaft of the drive motor (13). The pump body (48) is fixed to the front end of the housing of the drive motor (13). The mounting screw (57) is provided with, from front to back, an inlet guide vane (51), an impeller (52) located on the front side, an inlet guide vane (53), an impeller (52) located on the front middle side, an inlet guide vane (53), an impeller (52) located on the rear middle side, an outlet guide vane (54), an impeller (52) located on the rear side, a bushing (46), and a sealing sleeve (56). The impeller (52) located on the front side and the impeller (52) located on the front middle side are respectively located inside the inlet guide vane (53) at the corresponding positions. The impeller (52) located on the rear middle side is located inside the inlet guide vane (53) at the corresponding position. Inside the pump body (48), the impeller (52) located on the rear side is located inside the outlet guide vane (54). The front end of the mounting screw (57) is provided with a self-locking nut (50). The self-locking nut (50) abuts against the front end face of the inlet guide vane (51). The inlet guide vane (51), the impeller (52) located on the front side, the inlet guide vane (53), the impeller (52) located on the front middle side, the inlet guide vane (53), the impeller (52) located on the rear middle side, the outlet guide vane (54), the impeller (52) located on the rear side, the bushing (46), the sealing sleeve (56) and the self-locking nut (50) are all located inside the pump body (48) and form a water guide cavity with the pump body (48). The one-way valve (6) is connected to the front inlet end of the pump body (48). The upper outlet end of the pump body (48) is connected to the inlet end of the multi-way electric valve (5).

9. A permanent magnet variable frequency booster pump with automatic water pressure adjustment function according to claim 8, characterized in that, The PID control module comprises a user-defined target pressure input interface, a PID calculation unit, a variable frequency drive unit, and a speed feedback and closed-loop control unit; the multi-mode scenario module comprises a working mode selection unit, a booster mode control logic unit, a speed mode control logic unit, a water tower timing mode control logic unit, and a mode parameter storage and retrieval unit; the start / stop logic module comprises a water usage / outage status identification algorithm unit, an automatic start logic unit, an automatic stop logic unit, and a frequent start / stop protection unit; and the water shortage protection module comprises a power detection unit, water shortage judgment logic, and a water shortage fault triggering and timing unit. The system includes an automatic shutdown execution unit and a water inflow detection and automatic recovery unit; the WiFi remote intelligent control module consists of a WiFi communication module, a device network configuration and connection management unit, a remote control protocol stack unit, a data upload and download unit, and a cloud / APP data synchronization unit; the multi-pump collaboration module consists of a main pump and auxiliary pump communication interface, a collaborative control algorithm unit, a load distribution logic unit, and a fault switching and redundancy management unit; and the user interaction module consists of a user login and device binding management unit, a device status display interface, a remote control interface, a fault and alarm push unit, a data recording and analysis unit, and a scene linkage setting interface.

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