An energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function

Abstract

This invention discloses an energy-saving and environmentally friendly permanent magnet variable frequency water supply device with a stable flow compensation function, including a municipal pipeline network, a delivery water pump, and multiple compensation water storage tanks. The municipal pipeline network and the input end of the delivery water pump are connected by a first water pipe, which has a first electrically controlled valve. The municipal pipeline network and the compensation water storage tanks are connected by a second water pipe, which has a second electrically controlled valve. The multiple compensation water storage tanks are connected in series through pipelines. The compensation water storage tanks and the first water pipe are connected by a third water pipe, and the connection point between the third water pipe and the first water pipe is located downstream of the first electrically controlled valve. Under normal circumstances, the water supply to users mainly relies on the water temporarily stored in the compensation water storage tanks to provide users with a stable water pressure. When the pressure sensor detects that the water pressure in the municipal pipeline network is sufficient and stable, the water supply mode can be switched so that the municipal pipeline network directly supplies water to the user's pipeline network, avoiding the redundant use of the delivery water pump and the resulting energy waste.

Description

Technical Field

[0001] This invention relates to the field of water supply equipment technology, specifically to an energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with a flow stabilization compensation function. Background Technology

[0002] Negative pressure-free water supply equipment is a type of pressurized water supply unit that connects directly to the municipal water supply network. It uses the residual pressure of the municipal network in series with other pressurized water supply units to ensure that the municipal network pressure is not less than a set protection pressure (the set pressure must be higher than the pressure requirement of the directly supplied area of ​​the residential community, generally not less than 1.2 kg). Existing negative pressure-free water supply equipment generally has two operating modes: one is full-power operation, which can lead to resource waste during off-peak water usage periods; the other is variable frequency constant pressure operation.

[0003] The existing water supply equipment operates in a single mode and cannot change the water supply plan according to the user's water consumption, resulting in energy waste and equipment wear and tear. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving and environmentally friendly permanent magnet variable frequency water supply device with a steady flow compensation function, which can change the water supply scheme according to the user's water consumption.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with a steady flow compensation function includes a municipal pipeline network, a water pump, and multiple compensation storage tanks;

[0007] The municipal water supply network is connected to the input end of the water pump via a first water pipe, which has a first electrically controlled valve.

[0008] The municipal water supply network and the compensation water storage tank are connected by a second water pipe, which is equipped with a second electrically controlled valve. Multiple compensation water storage tanks are connected in series through the pipeline.

[0009] The compensation water storage tank is connected to the first water pipe through a third water pipe. The third water pipe is equipped with a third electrically controlled valve, and the connection point between the third water pipe and the first water pipe is located downstream of the first electrically controlled valve.

[0010] The water pump is driven by an independent drive motor;

[0011] The compensating water tank is connected to a compressed air tank, which is filled with air by an air compressor. The compressed air tank and the compensating water tank are connected by an air supply pipe, which has a first air valve.

[0012] The output end of the water pump is connected to the user's pipe network through a fourth water pipe, which is equipped with a fourth electrically controlled valve.

[0013] Preferably, a hydraulic torque converter is provided for the transmission connection between the output shaft of the drive motor and the rotating shaft of the water pump. The output shaft of the drive motor and the input shaft of the hydraulic torque converter are connected by a coupling, and the output shaft of the hydraulic torque converter and the rotating shaft of the water pump are connected by a coupling.

[0014] Explanation: The hydraulic torque converter provides a buffering effect, making the operation of the drive motor driving the water pump more stable, and the load change of the drive motor is also more stable, which also provides overload protection for the drive motor.

[0015] Preferably, multiple buffer tanks are connected to the fourth water pipe, and the connection between the buffer tanks and the fourth water pipe is located downstream of the fourth electrically controlled valve.

[0016] Note: Buffer tanks are used to buffer and absorb the energy of water flow in pipelines to prevent pipeline rupture and damage.

[0017] Preferably, the municipal pipe network and the fourth water pipe are connected through a fifth water pipe. The fifth water pipe is equipped with a fifth electrically controlled valve. The connection point between the fifth water pipe and the fourth water pipe is located downstream of the fourth electrically controlled valve and upstream of the buffer tank. A sixth pressure sensor is fixedly installed inside the fifth water pipe.

[0018] A sixth water pipe is connected in parallel with the fifth water pipe. The sixth water pipe is located downstream of the fifth electric control valve. A backup water pump is connected to the sixth water pipe. The sixth water pipe has a sixth electric control valve. A seventh electric control valve is located between the fifth water pipe and the sixth water pipe at the point where they are connected in parallel.

[0019] Note: When the water pressure in the municipal water supply network is sufficient, the fifth water pipe can be used directly to supply water to the user's network, avoiding the waste of energy caused by redundant operation of the water pump.

[0020] Preferably, a first pressure sensor is fixedly installed in the municipal pipeline network, a second pressure sensor is fixedly installed in the first water pipe, a third pressure sensor is fixedly installed in the second water pipe, a fourth pressure sensor is fixedly installed in the third water pipe, and a fifth pressure sensor is fixedly installed in the fourth water pipe.

[0021] Note: Various pressure sensors are used to monitor the water pressure in the pipeline in order to adjust the water supply strategy and save operating costs as much as possible.

[0022] Preferably, the water pump is a multi-stage vane pump, which includes a cylindrical vane pump housing with a gradually changing pipe diameter. A vane pump shaft is rotatably fitted inside the vane pump housing and extends from the end of the vane pump housing with a larger pipe diameter.

[0023] Multiple first blade retaining rings are fixedly provided on the shaft of the vane pump, and the first blade retaining rings have multiple first blades.

[0024] Multiple second blade fixing rings are fixedly provided on the inner wall of the vane pump housing, and multiple second blades are fixed inside the second blade fixing rings;

[0025] The first blade retaining ring and the second blade retaining ring are arranged alternately along the axis of the blade pump shaft.

[0026] The end of the vane pump housing with the larger diameter is the input end, and the end with the smaller diameter is the output end. The input end of the vane pump housing is connected to the first water pipe, and the output end of the vane pump housing is connected to the fourth water pipe.

[0027] Note: Using a multi-stage vane pump for water delivery and supply results in a stronger load-bearing capacity and smoother, more stable operation.

[0028] Preferably, the input end of the vane pump housing is connected to the first water pipe through a diversion stabilizing mechanism. The diversion stabilizing mechanism includes multiple water pump input interfaces fixed on the outer wall of the larger diameter end of the vane pump housing and connected to its own interior. Each water pump input interface is connected to the first water pipe through a pipe.

[0029] The outer wall of the smaller diameter end of the vane pump casing has multiple pump output ports that are connected to its interior. Each pump output port is connected to a fourth water pipe via a pipeline.

[0030] Note: By allowing water to enter through multiple pump inlets, the multi-stage vane pump can operate more smoothly, the water flow can be delivered more smoothly, and the water flow resistance can be appropriately reduced.

[0031] Preferably, the pipe path length between each water pump input interface and the connection point of the first water pipe is the same.

[0032] Note: The pipe path length between each water pump input interface and the connection point of the first water pipe is the same, which makes the water flow into the vane pump housing more stable and improves the delivery efficiency.

[0033] Preferably, a particulate filter is connected to the first water pipe upstream of the first electrically controlled valve. The input end of the particulate filter is connected to the upstream section of the first water pipe, and the output end of the particulate filter is connected to the downstream section of the first water pipe.

[0034] Note: The first water pipe is connected to the first electrically controlled valve upstream and is equipped with a particulate filter, which can purify the water and improve the water quality delivered to the user.

[0035] Preferably, the fourth water pipe is provided with multiple buffer mechanisms, each including a buffer connecting pipe connected in series to the fourth water pipe. Multiple buffer branch pipes connected to the interior of the buffer connecting pipe are fixedly provided on the buffer connecting pipe. A compression buffer pipe is fixedly provided in connection with the buffer branch pipes. A compression buffer piston is slidably provided inside the compression buffer pipe. The compression buffer piston divides the inside of the compression buffer pipe into a water flow buffer chamber and a gas compression chamber.

[0036] The side of the compression buffer piston closest to the buffer branch pipe is the water flow buffer chamber, while the other side of the compression buffer piston is the gas compression chamber;

[0037] An inlet check valve connected to the gas compression chamber is fixedly installed on the compression buffer pipe. A vent connection pipe connected to the gas compression chamber is also fixedly installed on the compression buffer pipe. The vent connection pipe has a vent valve. A pressure gauge for monitoring the gas pressure inside the gas compression chamber is also fixedly installed on the compression buffer pipe.

[0038] Explanation: The buffer mechanism uses the compression piston in the buffer system to compress the gas and do work to counteract the energy impact caused by the water hammer effect, thus protecting the various pipelines in the pipeline network from damage.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. Under normal circumstances, it mainly relies on the water temporarily stored in the compensation water tank to supply water to users, which is not affected by the water pressure in the municipal pipe network and provides users with a stable water supply pressure.

[0041] 2. When the pressure sensor detects that the water pressure in the municipal pipeline is sufficient and stable, it can switch the water supply mode and supply water directly from the municipal pipeline to the user's pipeline, avoiding the redundant use of the water pump and the resulting waste of energy.

[0042] 3. When the usage in the user's pipeline network is small, water can be supplied by a standby water pump alone, avoiding the wear and tear caused by frequent starting of the delivery pump, and also saving energy. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 This is a schematic diagram of the structure of the multi-stage vane pump in this invention;

[0045] Figure 3 yes Figure 2 The left view;

[0046] Figure 4 This is a schematic diagram of the buffer mechanism in this invention.

[0047] In the diagram, 10-municipal pipeline, 101-first pressure sensor, 11-first water pipe, 111-first electrically controlled valve, 112-second pressure sensor, 12-second water pipe, 121-second electrically controlled valve, 122-third pressure sensor, 13-third water pipe, 131-third electrically controlled valve, 132-fourth pressure sensor, 14-fourth water pipe, 141-fourth electrically controlled valve, 142-buffer tank, 1420-fifth pressure sensor, 15-fifth water pipe, 151-fifth electrically controlled valve, 152-sixth pressure sensor, 16-buffer mechanism, 161-buffer connecting pipe, 162-buffer branch pipe, 163-compression buffer pipe, 164-compression buffer piston, 165-water flow buffer chamber. 166-Gas compression chamber, 167-Inlet check valve, 168-Vent connection pipe, 169-Pressure gauge, 17-Sixth water pipe, 171-Standby water pump, 172-Sixth electric control valve, 173-Seventh electric control valve, 20-Transfer water pump, 200-Compensation water storage tank, 30-Multi-stage vane pump, 31-Vane pump housing, 311-Vane pump shaft, 312-Conical guide shell, 313-Shaft through hole, 314-Water pump output interface, 32-First vane, 321-First vane retaining ring, 33-Second vane, 331-Second vane retaining ring, 34-Flow diversion stabilizing mechanism, 341-Water pump input interface, 41-Compressed air tank, 411-Gas delivery pipe, 412-First air valve. Detailed Implementation

[0048] The following is combined with Figures 1-4 The present invention will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of the respective main view or structural schematic diagram.

[0049] Example 1:

[0050] An energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function, such as Figure 1 As shown, it includes a municipal pipeline network 10, a water pump 20, and multiple compensation water storage tanks 200;

[0051] The municipal pipeline 10 is connected to the input end of the water pump 20 through a first water pipe 11, and the first water pipe 11 has a first electrically controlled valve 111.

[0052] The municipal pipeline 10 and the compensation water storage tank 200 are connected by a second water pipe 12. The second water pipe 12 has a second electric control valve 121. Multiple compensation water storage tanks 200 are connected in series through pipelines.

[0053] The compensation water storage tank 200 is connected to the first water pipe 11 through a third water pipe 13. The third water pipe 13 has a third electric control valve 131. The connection point between the third water pipe 13 and the first water pipe 11 is located downstream of the first electric control valve 131.

[0054] The water pump 20 is driven by an independent drive motor 21;

[0055] like Figure 1 As shown, a hydraulic torque converter 22 is provided for the transmission connection between the output shaft of the drive motor 21 and the rotating shaft of the water pump 20. The output shaft of the drive motor 21 and the input shaft of the hydraulic torque converter 22 are connected by a coupling. The output shaft of the hydraulic torque converter 22 and the rotating shaft of the water pump 20 are connected by a coupling.

[0056] The compensating water tank 200 is connected to a compressed air tank 41, which is filled with air by an air compressor. The compressed air tank 41 and the compensating water tank 200 are connected by an air supply pipe 411, which has a first air valve 412.

[0057] The output end of the water pump 20 is connected to the user's pipe network 90 through the fourth water pipe 14, and the fourth water pipe 14 has a fourth electrically controlled valve 141.

[0058] like Figure 1 As shown, multiple buffer tanks 142 are connected to the fourth water pipe 14, and the connection between the buffer tanks 142 and the fourth water pipe 14 is located downstream of the fourth electric control valve 141.

[0059] like Figure 1 As shown, the municipal pipeline 10 and the fourth water pipe 14 are connected by the fifth water pipe 15. The fifth water pipe 15 has a fifth electric control valve 151. The connection between the fifth water pipe 15 and the fourth water pipe 14 is located downstream of the fourth electric control valve 141 and upstream of the buffer tank 142. A sixth pressure sensor 152 is fixedly installed inside the fifth water pipe 15.

[0060] A sixth water pipe 17 is connected in parallel with the fifth water pipe 15. The sixth water pipe 17 is located downstream of the fifth electric control valve 151. A standby water pump 171 is connected to the sixth water pipe 17. The sixth water pipe 17 has a sixth electric control valve 172. A seventh electric control valve 173 is located between the fifth water pipe 15 and the sixth water pipe 17.

[0061] A first pressure sensor 101 is fixedly installed in the municipal pipeline network 10, a second pressure sensor 112 is fixedly installed in the first water pipe 11, a third pressure sensor 122 is fixedly installed in the second water pipe 12, a fourth pressure sensor 132 is fixedly installed in the third water pipe 13, and a fifth pressure sensor 1420 is fixedly installed in the fourth water pipe 14.

[0062] like Figure 1 As shown, a particulate filter is connected to the first water pipe 11 upstream of the first solenoid valve 111. The input end of the particulate filter is connected to the upstream section of the first water pipe 11, and the output end of the particulate filter is connected to the downstream section of the first water pipe 11.

[0063] like Figure 4 As shown, the fourth water pipe 14 is provided with multiple buffer mechanisms 16. The buffer mechanism 16 includes a buffer connecting pipe 161, which is connected in series to the fourth water pipe 14. Multiple buffer branch pipes 162 connected to its own interior are fixedly provided on the buffer connecting pipe 161. A compression buffer pipe 163 is fixedly provided in connection with the buffer branch pipes 162. A compression buffer piston 164 is slidably fitted inside the compression buffer pipe 163. The compression buffer piston 164 divides the inside of the compression buffer pipe 163 into a water flow buffer chamber 165 and a gas compression chamber 166.

[0064] The side of the compression buffer piston 164 closest to the buffer branch pipe 162 is the water flow buffer chamber 165, and the other side of the compression buffer piston 164 is the gas compression chamber 166.

[0065] An intake check valve 167 connected to the gas compression chamber 166 is fixedly installed on the compression buffer pipe 163. A vent connection pipe 168 connected to the gas compression chamber 166 is fixedly installed on the compression buffer pipe 163. A vent valve is installed on the vent connection pipe 168. A pressure gauge 169 for monitoring the gas pressure in the gas compression chamber 166 is fixedly installed on the compression buffer pipe 163.

[0066] Example 2:

[0067] The difference from Example 1 is that, as Figure 2 As shown, the water pump 20 is a multi-stage vane pump 30. The multi-stage vane pump 30 includes a cylindrical vane pump housing 31 with a gradually changing pipe diameter. A vane pump shaft 311 is rotatably fitted inside the vane pump housing 31 and extends out from the end of the vane pump housing 31 with a larger pipe diameter.

[0068] A plurality of first blade fixing rings 321 are fixedly provided on the rotor shaft 311 of the vane pump, and the first blade fixing rings 321 have a plurality of first blades 32.

[0069] Multiple second blade fixing rings 331 are fixedly provided on the inner wall of the vane pump housing 31, and multiple second blades 33 are fixed inside the second blade fixing rings 331.

[0070] The first blade fixing ring 321 and the second blade fixing ring 331 are arranged alternately along the axis of the blade pump shaft 311.

[0071] The larger diameter end of the vane pump housing 31 is the input end, and the smaller diameter end is the output end. The input end of the vane pump housing 31 is connected to the first water pipe 11, and the output end of the vane pump housing 31 is connected to the fourth water pipe 14.

[0072] The input end of the vane pump housing 31 is connected to the first water pipe 11 through the flow diversion stabilizing mechanism 34, such as... Figure 3 As shown, the diversion stabilization mechanism 34 includes multiple water pump input interfaces 341 that are fixed on the outer wall of the larger diameter end of the vane pump housing 31 and connected to its own interior. Each water pump input interface 341 is connected to the first water pipe 11 through a pipe.

[0073] The outer wall of the smaller diameter end of the vane pump housing 31 has multiple pump output ports 314 that are connected to its interior. Each pump output port 314 is connected to the fourth water pipe 14 through a pipe.

[0074] The pipe path length between each water pump input interface 341 and the first water pipe 11 is the same.

[0075] In practical application, the compensation water storage tank 200 is connected to the municipal pipe network 10 through the second water pipe 12. After the second electric control valve 121 is opened, the water in the municipal pipe network 10 flows into the compensation water storage tank 200 and is stored. After the water in the compensation water storage tank 200 is stored, the second electric control valve 121 is closed.

[0076] Under normal circumstances, the municipal water supply network 10 is connected to the user water supply network 90 through the fifth water pipe 15 and the fourth water pipe 14 to supply water to the user. At this time, the first electric control valve 111 is closed, the second electric control valve 121 is closed, the third electric control valve 131 is closed, the fourth electric control valve 141 is closed, the fifth electric control valve 151 is open, the sixth electric control valve 172 is closed, and the seventh electric control valve 173 is open.

[0077] When the water consumption in the user's pipe network 90 is low, the municipal pipe network 10 is connected to the user's pipe network 90 through the fifth water pipe 15, the sixth water pipe 17 and the fourth water pipe 14. The standby water pump 171 in the sixth water pipe 17 is used to supply water to the user. At this time, the first electric control valve 111 is closed, the second electric control valve 121 is closed, the third electric control valve 131 is closed, the fourth electric control valve 141 is closed, the fifth electric control valve 151 is open, the sixth electric control valve 172 is open, and the seventh electric control valve 173 is closed.

[0078] When the water consumption in the household water supply network 90 is large, the municipal water supply network 10 is connected to the household water supply network 90 through the first water pipe 11 and the fourth water pipe 14. The water pump 20 connected between the first water pipe 11 and the fourth water pipe 14 supplies water to the household. The compensation water storage tank 200 is connected to the first water pipe 11 through the third water pipe 13. The first air valve 412 is opened so that the high pressure air in the compressed air tank 41 enters the compensation water storage tank 200 through the air supply pipe 411. The water in the compensation water storage tank 200 is then pumped into the first water pipe 11 through the third water pipe 13, and then pumped by the water pump 20 to provide compensation water supply. At this time, the first electric control valve 111 is in the open state, the second electric control valve 121 is in the closed state, the third electric control valve 131 is in the open state, the fourth electric control valve 141 is in the open state, the fifth electric control valve 151 is in the closed state, the sixth electric control valve 172 is in the closed state, and the seventh electric control valve 173 is in the closed state.

Claims

1. An energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with a constant flow compensation function, characterized in that, Includes municipal pipeline network (10), water pump (20) and multiple compensation water storage tanks (200); The municipal pipeline (10) is connected to the input end of the water pump (20) via a first water pipe (11), and the first water pipe (11) has a first electrically controlled valve (111). The municipal pipeline network (10) and the compensation water storage tank (200) are connected by a second water pipe (12), and the second water pipe (12) has a second electric control valve (121). Multiple compensation water storage tanks (200) are connected in series through pipelines. The compensation water storage tank (200) is connected to the first water pipe (11) through a third water pipe (13). The third water pipe (13) has a third electric control valve (131). The connection point between the third water pipe (13) and the first water pipe (11) is located downstream of the first electric control valve (111). The water pump (20) is driven by an independent drive motor (21); The compensation water tank (200) is connected to a compressed air tank (41), which is filled with air by an air compressor. The compressed air tank (41) and the compensation water tank (200) are connected by an air supply pipe (411), which has a first air valve (412). The output end of the water pump (20) is connected to the user's pipe network (90) through the fourth water pipe (14), and the fourth water pipe (14) has a fourth electrically controlled valve (141). The fourth water pipe (14) is connected to multiple buffer tanks (142), and the connection between the buffer tanks (142) and the fourth water pipe (14) is located downstream of the fourth electric control valve (141). The fourth water pipe (14) is provided with multiple buffer mechanisms (16). The buffer mechanism (16) includes a buffer connecting pipe (161). The buffer connecting pipe (161) is connected in series to the fourth water pipe (14). Multiple buffer branch pipes (162) connected to its own interior are fixedly provided on the buffer connecting pipe (161). The buffer branch pipes (162) are connected to and fixedly provided with a compression buffer pipe (163). A compression buffer piston (164) is slidably fitted inside the compression buffer pipe (163). The compression buffer piston (164) divides the inside of the compression buffer pipe (163) into a water flow buffer chamber (165) and a gas compression chamber (166). The side of the compression buffer piston (164) closest to the buffer branch pipe (162) is the water flow buffer chamber (165), and the other side of the compression buffer piston (164) is the gas compression chamber (166). An inlet check valve (167) connected to the gas compression chamber (166) is fixedly provided on the compression buffer pipe (163). A vent connection pipe (168) connected to the gas compression chamber (166) is fixedly provided on the compression buffer pipe (163). A vent valve is provided on the vent connection pipe (168). A pressure gauge (169) for monitoring the gas pressure in the gas compression chamber (166) is fixedly provided on the compression buffer pipe (163).

2. The energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function according to claim 1, characterized in that: A hydraulic torque converter (22) is provided for the transmission connection between the output shaft of the drive motor (21) and the rotating shaft of the water pump (20). The output shaft of the drive motor (21) and the input shaft of the hydraulic torque converter (22) are connected by a coupling. The output shaft of the hydraulic torque converter (22) and the rotating shaft of the water pump (20) are connected by a coupling.

3. The energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function according to claim 1, characterized in that: The municipal pipeline (10) and the fourth water pipe (14) are connected by a fifth water pipe (15). The fifth water pipe (15) has a fifth electric control valve (151). The connection between the fifth water pipe (15) and the fourth water pipe (14) is located downstream of the fourth electric control valve (141) and upstream of the buffer tank (142). A sixth pressure sensor (152) is fixedly installed inside the fifth water pipe (15). A sixth water pipe (17) is connected in parallel with the fifth water pipe (15). The sixth water pipe (17) is located downstream of the fifth electric control valve (151). A standby water pump (171) is connected to the sixth water pipe (17). A sixth electric control valve (172) is provided on the sixth water pipe (17). A seventh electric control valve (173) is provided between the fifth water pipe (15) and the sixth water pipe (17).

4. The energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function according to claim 1, characterized in that: A first pressure sensor (101) is fixedly installed in the municipal pipeline (10), a second pressure sensor (112) is fixedly installed in the first water pipe (11), a third pressure sensor (122) is fixedly installed in the second water pipe (12), a fourth pressure sensor (132) is fixedly installed in the third water pipe (13), and a fifth pressure sensor (1420) is fixedly installed in the fourth water pipe (14).

5. The energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function according to claim 1, characterized in that: The water pump (20) is a multi-stage vane pump (30). The multi-stage vane pump (30) includes a cylindrical vane pump housing (31). The vane pump housing (31) has a gradually changing pipe diameter structure. A vane pump shaft (311) is rotatably fitted inside the vane pump housing (31). The vane pump shaft (311) extends from the end of the vane pump housing (31) with a larger pipe diameter. A plurality of first blade fixing rings (321) are fixedly provided on the blade pump shaft (311), and the first blade fixing rings (321) have a plurality of first blades (32). The inner wall of the vane pump housing (31) is fixed with a plurality of second vane fixing rings (331), and a plurality of second vanes (33) are fixed inside the second vane fixing rings (331). The first blade fixing ring (321) and the second blade fixing ring (331) are arranged alternately along the axis of the blade pump shaft (311); The larger diameter end of the vane pump housing (31) is the input end, and the smaller diameter end of the vane pump housing (31) is the output end. The input end of the vane pump housing (31) is connected to the first water pipe (11), and the output end of the vane pump housing (31) is connected to the fourth water pipe (14). The vane pump housing (31) has a conical guide shell (312) fixedly installed on the inner wall of the larger diameter end. The conical guide shell (312) has a shaft through hole (313). The vane pump shaft (311) passes through and rotates in the shaft through hole (313). The tip of the conical guide shell (312) faces the smaller diameter end of the vane pump housing (31).

6. The energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function according to claim 5, characterized in that: The input end of the vane pump housing (31) is connected to the first water pipe (11) through a diversion stabilizing mechanism (34). The diversion stabilizing mechanism (34) includes multiple water pump input interfaces (341) that are connected to the interior of the vane pump housing (31) and fixed on the outer wall of the larger diameter end of the pipe. Each water pump input interface (341) is connected to the first water pipe (11) through a pipe. The outer wall of the smaller diameter end of the vane pump housing (31) has multiple pump output ports (314) that are connected to its interior. Each pump output port (314) is connected to the fourth water pipe (14) through a pipe.

7. The energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function according to claim 6, characterized in that: The pipe path length between each of the water pump input interfaces (341) and the first water pipe (11) is the same.

8. The energy-saving and environmentally friendly permanent magnet variable frequency water supply equipment with flow stabilization compensation function according to claim 1, characterized in that: The first water pipe (11) is connected to a particle filter upstream of the first electric control valve (111). The input end of the particle filter is connected to the upstream section of the first water pipe (11), and the output end of the particle filter is connected to the downstream section of the first water pipe (11).

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