Anti-cavitation protection device for water supply pump

Abstract

The invention discloses a water supply pump anti-cavitation protection device, and belongs to the technical field of water supply pump anti-cavitation protection. Comprising a pump shell, a water pumping cavity is fixedly connected to the upper surface of the pump shell, a water pumping lower pipe is fixedly connected to the lower surface of the water pumping cavity, a floating ring is slidably connected to the outer side wall of the water pumping lower pipe, a supporting rod is fixedly connected to the lower surface of the floating ring, and a bottom plate is fixedly connected to the bottom end of the supporting rod; a blocking block is fixedly connected to the upper surface of the bottom plate, clamping rings are symmetrically and fixedly connected to the two ends of the floating ring, and floating balls are fixedly connected into the clamping rings, water at the bottom of the pump shell is rapidly pumped out, gas is exhausted, cavitation caused by water bubbles and gas is avoided, the cavitation risk caused by unstable water flow is reduced, and along with the rising of the water level, the water level is kept constant. The floating ball and the floating ring are automatically adjusted, so that the blocking block blocks the water pumping lower pipe, gas is prevented from reversely entering through the gas outlet pipe, the gas outlet pipe timely exhausts the gas, and the internal pressure of the equipment is kept stable.

Description

Technical Field

[0001] This invention relates to cavitation protection technology for water supply pumps, and more particularly to a cavitation protection device for water supply pumps. Background Technology

[0002] During the water intake and supply process, when the inlet pressure of the water pump is lower than the saturated vapor pressure of the water at the ambient temperature, a large amount of vapor escapes from the water and mixes with the gas to form bubbles. When the bubbles reach the high-pressure zone, the vapor condenses and the bubbles burst. At this time, liquid water rushes from the surrounding area to the center of the bubble at a very high speed, generating high-frequency and high-instantaneous-pressure impacts that strike the metal surface of the blades, causing damage to the blades and resulting in cavitation.

[0003] Existing technologies do not offer a good solution to the cavitation phenomenon inside the cavity, and cannot effectively reduce cavitation. At the same time, there is no effective way to protect the surface of the centrifugal blade assembly, which easily leads to corrosion and damage to its metal surface. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide an effective solution to the cavitation phenomenon that occurs inside the cavity; another purpose of this invention is to enable real-time monitoring of the system's operating conditions through temperature and pressure detection.

[0005] Technical solution: Includes a pump casing, a pumping chamber fixedly connected to the upper surface of the pump casing, a pumping pipe fixedly connected to the lower surface of the pumping chamber, a floating ring slidably connected to the outer wall of the pumping pipe, a support rod fixedly connected to the lower surface of the floating ring, a base plate fixedly connected to the bottom end of the support rod, a blocking block fixedly connected to the upper surface of the base plate, locking rings symmetrically fixedly connected to both ends of the floating ring, a float ball fixedly connected inside the locking ring, a limiting block fixedly connected to the outer wall of the pumping pipe below the floating ring, an inlet connection cavity fixedly opened on the left side of the pump casing, and an outlet connection cavity fixedly connected to the upper part of the outer wall of the pump casing.

[0006] Furthermore, a motor is fixedly connected to the front surface of the pumping chamber. The rear end of the output end of the motor extends into the interior of the pumping chamber and is fixedly connected to a rotating block. The rear surface of the rotating block is rotatably connected to the rear surface of the interior of the pumping chamber. Multiple pumping blades are fixedly connected to the outer wall of the rotating block. An outlet pipe is fixedly opened on the upper surface of the pumping chamber. A pumping pipe is fixedly connected to the right side of the outlet pipe. A motor is fixedly connected to the right side of the pumping pipe. A long rotating rod is fixedly connected to the left side of the motor. The left side of the long rotating rod extends into the interior of the pumping pipe. A ring of pumping blades is fixedly connected to the outer wall of the long rotating rod. An inlet chamber is fixedly connected to the right side of the outer wall of the pumping pipe. An inlet arc cavity is fixedly connected to the outer wall of the pump casing. The inlet arc cavity is fixedly connected to the lower part of the outer wall of the pump casing. The inlet arc cavity is connected to the inlet chamber. An air outlet pipe is fixedly connected to the upper surface of the outer wall of the outlet pipe. An air outlet is fixedly connected to the upper surface of the air outlet pipe.

[0007] Furthermore, a motor is fixedly connected to the right side of the pump casing. The left end of the output end of the motor extends into the interior of the pump casing, and a booster device is fixedly connected to the outer wall of the centrifugal blade assembly. A rotating groove is formed inside the booster device, and a booster pump is fixedly connected to the left side of the rotating groove. The left end of the output end of the booster pump extends into the outside of the booster device. An air inlet chamber is fixedly connected to the left side of the outer wall of the water inlet connection chamber. A power control chamber is fixedly connected inside the rotating groove and is signal-connected to the booster pump. An adjustment knob is rotatably connected to the front surface of the power control chamber. A transmission gear is fixedly connected to the outer wall of the adjustment knob, and a limit strip is fixedly connected to the outer wall of the adjustment knob. A stop block is symmetrically fixedly connected to the front surface of the power control chamber, and a micro-... The micro motor has a transmission gear two fixedly connected to the front end of its output end. The transmission gear two meshes with the transmission gear one. A rotating column is fixedly connected to the front surface of the transmission gear two. A rotating plate is fixedly connected to the outer wall of the rotating column. A connecting column is fixedly connected to the front surface of the rotating plate. A short plate is rotatably connected to the outer wall of the connecting column. A stop rod is rotatably connected to the outer wall of the short plate. The top end of the stop rod extends to the top end of the booster device. An exhaust pipe is fixedly connected to the left side of the upper surface of the pump casing. A front cover is fixedly connected to the left end of the exhaust pipe. A sliding groove is opened on the left side of the front cover. A baffle is slidably connected inside the sliding groove. The outer wall of the stop rod is fixedly connected to the left side of the baffle. An electronic control device is fixedly connected to the right side of the micro motor. The right end of the electronic control device extends into the inside of the pump casing and is fixedly connected to a water pressure and water temperature detection head.

[0008] Furthermore, an air venting chamber is fixedly connected above the front surface of the water inlet chamber. An air-blocking layer is fixedly connected inside the air venting chamber. A push-button column is slidably connected inside the air-blocking layer. The top end of the push-button column extends to the outside of the air venting chamber. A sealing circular plate is fixedly connected to the bottom end of the push-button column. A spring is wound around the outer wall of the push-button column. An air outlet is opened at the top end of the air venting chamber. The push-button column is slidably connected to the air outlet.

[0009] Furthermore, a plurality of support columns are symmetrically fixedly connected to the lower surface of the pump casing, and a base is fixedly connected to the lower surface of each support column.

[0010] Furthermore, a dustproof chamber is fixedly connected to the right side of the pump casing and to the outer wall of the motor.

[0011] Furthermore, each of the outer walls of the water outlet connection cavity is fixedly connected to a connecting plate, and each connecting plate has multiple threaded connection holes on its outer wall.

[0012] Furthermore, the air intake chamber includes a blocking groove, and a baffle is rotatably connected to the right side of the inside of the blocking groove via a rotating shaft. A spring is fixedly connected between the upper surface of the baffle and the inner sidewall of the blocking groove, and a pressurized air pipe is fixedly connected to the lower surface of the blocking groove.

[0013] Beneficial effects: It quickly extracts water from the bottom of the pump casing and discharges gas, preventing cavitation caused by water bubbles and gas, and reducing the risk of cavitation due to unstable water flow. As the water level rises, the float and floating ring automatically adjust, causing the blockage block to seal the lower pump pipe, preventing gas from re-entering through the vent pipe. The vent pipe promptly discharges gas, maintaining stable internal pressure. In terms of cavitation prevention, the close coordination of all stages from water inlet to pumping and drainage, regulating water level and pressure, effectively prevents cavitation caused by low water flow and unstable pressure, ensuring stable operation of the equipment under different working conditions, extending equipment lifespan, improving water supply efficiency, reducing equipment failures and maintenance costs due to cavitation, and providing strong protection for the safe and stable operation of the water supply system.

[0014] The device incorporates water temperature and air pressure sensors in the upper part of the low-pressure zone, along with an exhaust system. This design yields significant benefits. By monitoring temperature and pressure, the system's operating conditions can be monitored in real time. When an increase in air pressure or water temperature is detected, the inlet pressure is interlocked to increase to reduce the saturation pressure, while the exhaust system activates promptly. This coordinated mechanism effectively prevents excessive water vaporization caused by excessively high water temperature or abnormal air pressure. On one hand, accurate temperature and pressure measurement avoids cavitation caused by localized overheating or abnormal pressure, ensuring the normal operation of the water supply pump and reducing the risk of equipment damage. On the other hand, timely venting of water vapor maintains a stable environment within the system, preventing water vapor accumulation from interfering with water flow and equipment operation, improving the overall efficiency and stability of the water supply system, and enabling the device to continuously and reliably supply water to users under complex operating conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0017] Figure 3 This is the present invention. Figure 2 A magnified structural diagram at point A;

[0018] Figure 4 This is a cross-sectional view of the booster device of the present invention;

[0019] Figure 5 This is a cross-sectional view of the air intake chamber of the present invention;

[0020] Figure 6 This is a cross-sectional view of the cover of the present invention;

[0021] Figure 7 This is a cross-sectional view of the venting chamber of the present invention.

[0022] In the diagram: 1. Pump casing; 2. Pumping chamber; 3. Lower pumping pipe; 4. Floating ring; 5. Support rod; 6. Base plate; 7. Blocking block; 8. Engaging ring; 9. Float ball; 10. Limiting block; 43. Inlet connection chamber; 44. Outlet connection chamber; 11. Motor 1; 12. Rotating block; 13. Pumping blade; 14. Upper outlet pipe; 15. Pumping pipe; 16. Motor 2; 17. Long rotating rod; 18. One ring of pumping blades; 19. Inlet chamber; 20. Inlet arc chamber; 21. Air outlet pipe; 22. Air outlet; 23. Motor 3; 24. Centrifugal blade assembly; 25. Booster device; 26. Rotary trough; 27. Booster pump; 60. Air inlet chamber; 59. Power control chamber; 28. Adjusting knob 101. Button; 29. ​​Transmission Gear 1; 30. Limiting Strip; 45. Stop Block; 46. Micro Motor; 47. Transmission Gear 2; 48. Rotating Column; 49. Rotating Plate; 50. Connecting Column; 51. Short Plate; 52. Support Rod; 53. Exhaust Pipe; 54. Slide Groove; 55. Front Cover; 56. Baffle Cover; 57. Electrical Control Device; 58. Water Pressure and Temperature Detector; 32. Venting Chamber; 33. Air Blocking Layer; 34. Pressing Column; 35. Sealing Circular Plate; 36. Spring 1; 40. Air Outlet; 37. Support Column; 38. Base; 39. Dustproof Chamber; 41. Connecting Plate; 42. Threaded Connection Hole; 101. Blocking Groove; 102. Baffle; 103. Spring 2; 104. Pressurized Air Pipe. Detailed Implementation

[0023] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1 , Figure 2 and Figure 3As shown, a water supply pump anti-cavitation protection device is provided, including a pump casing 1, a pumping chamber 2 fixedly connected to the upper surface of the pump casing 1, a pumping pipe 3 fixedly connected to the lower surface of the pumping chamber 2, a floating ring 4 slidably connected to the outer wall of the pumping pipe 3, a support rod 5 fixedly connected to the lower surface of the floating ring 4, a base plate 6 fixedly connected to the bottom end of the support rod 5, a blocking block 7 fixedly connected to the upper surface of the base plate 6, locking rings 8 symmetrically fixedly connected to both ends of the floating ring 4, a float ball 9 fixedly connected inside the locking ring 8, a limit block 10 fixedly connected to the outer wall of the pumping pipe 3 below the floating ring 4, an inlet connection cavity 43 fixedly opened on the left side of the pump casing 1, an outlet connection cavity 44 fixedly connected to the upper part of the outer wall of the pump casing 1, a motor 11 fixedly connected to the front surface of the pumping chamber 2, the rear end of the output end of the motor 11 penetrating into the interior of the pumping chamber 2, and a rotating block 12 fixedly connected thereto. The rear surface of the rotating block 12 is rotatably connected to the rear surface of the inner side of the pumping chamber 2. Multiple pumping blades 13 are fixedly connected to the outer side wall of the rotating block 12. An outlet pipe 14 is fixedly opened on the upper surface of the pumping chamber 2. A pumping pipe 15 is fixedly connected to the right side of the outlet pipe 14. A motor 16 is fixedly connected to the right side of the pumping pipe 15. A long rotating rod 17 is fixedly connected to the left side of the motor 16. The left side of the long rotating rod 17 extends into the interior of the pumping pipe 15. A ring of pumping blades 18 is fixedly connected to the outer side wall of the long rotating rod 17. An inlet chamber 19 is fixedly connected to the right side of the outer side wall of the pumping pipe 15. An inlet arc chamber 20 is fixedly connected to the outer side wall of the pump casing 1. The inlet arc chamber 20 is fixedly connected to the lower side of the outer side wall of the pump casing 1. The inlet arc chamber 20 is connected to the inlet chamber 19. An air outlet pipe 21 is fixedly connected to the upper surface of the outer side wall of the outlet pipe 14. An air outlet 22 is fixedly connected to the upper surface of the air outlet pipe 21.

[0026] The device is connected to a water pipe via the inlet connection cavity 43. When water enters, if the water flow is small, the water pressure will be low, and the incoming water is prone to forming bubbles, causing cavitation inside. At this time, the motor 11 rotates, drawing water from the bottom of the ring cavity 1 into the interior. Simultaneously, the motor 2 16 starts, and the water that has entered the interior is drawn away by the pumping vane 18. The generated gas is discharged to the outside of the pump casing 1 through the vent pipe 21, eliminating the gas. At the same time, water is introduced into the interior through the inlet arc cavity 20. As the water level inside the pump casing 1 rises, the float 9 floats upward due to the buoyancy of the water. Since the float 9 is connected to the floating ring 4 via the locking ring 8, the rise of the float 9 drives the floating ring 4 to slide upward along the outer wall of the lower pumping pipe 3. When the floating ring 4 slides upward, it drives the base plate 6 to move upward via the support rod 5. When the water level rises to a certain level, the pressure increases, and very little gas enters the interior, making it less likely to cause cavitation. This causes the blockage block 7 on the bottom plate 6 to block the bottom of the pumping pipe 3, thus blocking the channel at the bottom of the pumping pipe 3.

[0027] like Figure 4 and Figure 5As shown, a motor 23 is fixedly connected to the right side of the pump casing 1. The left end of the output end of the motor 23 extends into the interior of the pump casing 1 and is fixedly connected to a centrifugal blade assembly 24. A booster device 25 is fixedly connected to the outer wall of the water inlet connection cavity 43. A rotating groove 26 is opened inside the booster device 25. A booster pump 27 is fixedly connected to the left side of the rotating groove 26. The left end of the output end of the booster pump 27 extends into the outside of the booster device 25. An air inlet cavity 60 is fixedly connected to the left side of the outer wall of the water inlet connection cavity 43. A power control cavity 59 is fixedly connected inside the rotating groove 26. The power control cavity 59 is signal-connected to the booster pump 27. An adjustment knob 28 is rotatably connected to the front surface of the power control cavity 59. A transmission gear 29 is fixedly connected to the outer wall of the adjustment knob 28. A limit strip 30 is fixedly connected to the outer wall of the adjustment knob 28. A stop block 45 is symmetrically fixedly connected to the front surface of the power control cavity 59. A micro- The output end of the micro motor 46 is fixedly connected to a transmission gear 47, which meshes with the transmission gear 29. A rotating column 48 is fixedly connected to the front surface of the transmission gear 47. A rotating plate 49 is fixedly connected to the outer wall of the rotating column 48. A connecting column 50 is fixedly connected to the front surface of the rotating plate 49. A short plate 51 is rotatably connected to the outer wall of the connecting column 50. A push rod 52 is rotatably connected to the outer wall of the short plate 51. The top end of the push rod 52 extends to the top end of the booster device 25. An exhaust pipe 53 is fixedly connected to the left side of the upper surface of the pump casing 1. A front cover 55 is fixedly connected to the left end of the exhaust pipe 53. A sliding groove 54 is opened on the left side of the front cover 55. A baffle 56 is slidably connected inside the sliding groove 54. The outer wall of the push rod 52 is fixedly connected to the left side of the baffle 56. An electronic control device 57 is fixedly connected to the right side of the micro motor 46. The right end of the electronic control device 57 extends into the inside of the pump casing 1 and is fixedly connected to a water pressure and water temperature detection head 58.

[0028] The device starts, and motor 23 starts, its output driving the centrifugal blade assembly 24 to rotate inside the pump casing 1, initiating water pumping operations. The booster device 25 on the outer wall of the inlet connection chamber 43 begins operation. The booster pump 27 on the left side of the rotating trough 26 is in a pre-boosting state, its output conveying water to the outside of the booster device 25. Increasing the low-pressure suction inlet water pressure through the booster device reduces saturated gas pressure, decreases water vaporization, and prevents cavitation. The power control chamber 59 is signal-connected to the booster pump 27, allowing for power regulation. The water pressure and temperature sensor 58 detects the water inside the pump casing 1. When the water temperature or pressure is too high, the power of the booster pump 27 needs adjustment. At this time, the micro motor 46 starts, its output driving the transmission gear 47 to rotate. Since the transmission gear 47 meshes with the transmission gear 29, the adjustment knob 28 can be rotated, increasing the power of the booster pump 27. The limiting strip 30 on the adjusting knob 28 can play a certain limiting role within the power control cavity 59. When the micro motor 46 starts, the rotating column 48 on the front surface of the transmission gear 47 drives the rotating plate 49 to rotate. The connecting column 50 on the front surface of the rotating plate 49 causes the short plate 51 to rotate around the connecting column 50, which in turn drives the push rod 52 to move. When the push rod 52 moves, it can drive the front cover 55 to slide in the slide groove 54, thereby realizing the exhaust control of the exhaust pipe 53, expelling water vapor, further ensuring the stable operation of the system, and preventing cavitation from damaging the water supply pump. When an increase in air pressure or a rise in water temperature is detected, the inlet pressure will be interlocked to be higher, further reducing the saturated air pressure, thereby better preventing water vaporization.

[0029] like Figure 1 As shown, multiple support columns 37 are symmetrically fixedly connected to the lower surface of the pump casing 1, and a base 38 is fixedly connected to the lower surface of each support column 37. A dustproof cavity 39 is fixedly connected to the right side of the pump casing 1 and located on the outer wall of the motor 23.

[0030] Support column 37 and base 38 ensure the stability of pump casing 1 and the entire device. Dustproof chamber 39 protects motor 3 23, preventing dust and other impurities from entering motor 3 23 and affecting its normal operation.

[0031] like Figure 5 As shown, the air intake chamber 60 includes a blocking groove 101. A baffle 102 is rotatably connected to the right side of the inside of the blocking groove 101 via a rotating shaft. A spring 103 is fixedly connected between the upper surface of the baffle 102 and the inner sidewall of the blocking groove 101. A pressurized air pipe 104 is fixedly connected to the lower surface of the blocking groove 101.

[0032] When an abnormal situation occurs, such as a reverse flow of water, the elasticity of spring 103 ensures that baffle 102 fits tightly in the corresponding position, effectively preventing water from flowing back into the air intake chamber 60, thus preventing backflow. Simultaneously, a pressurized air pipe 104 is fixedly connected to the lower surface of the blocking groove 101. The pressurized air pipe 104 is used to deliver gas into the blocking groove 101, and the gas pressure works in conjunction with spring 103 and baffle 102. When gas enters, if the pressure is appropriate, baffle 102 remains balanced under the combined action of spring 103 and gas pressure, allowing normal output of pressurized gas while reacting quickly in any possible backflow situation, ensuring that the air intake chamber 60 is not invaded by water, maintaining the stable operation of the entire water supply pump anti-cavitation protection device, and preventing device malfunction or damage due to backflow.

[0033] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A device for protecting a water supply pump against cavitation, comprising a pump housing (1), characterised in that: The upper surface of the pump shell (1) is fixedly connected with a water pumping cavity (2), the lower surface of the water pumping cavity (2) is fixedly connected with a water pumping lower pipe (3), the outer side wall of the water pumping lower pipe (3) is slidably connected with a floating ring (4), the lower surface of the floating ring (4) is fixedly connected with a supporting rod (5), the bottom end of the supporting rod (5) is fixedly connected with a bottom plate (6), the upper surface of the bottom plate (6) is fixedly connected with a blocking block (7), the two ends of the floating ring (4) are fixedly and symmetrically connected with clamping rings (8), the inside of the clamping ring (8) is fixedly connected with a floating ball (9), the outer side wall of the water pumping lower pipe (3) is fixedly connected with a limiting block (10) below the floating ring (4), the left side of the pump shell (1) is fixedly provided with a water inlet connecting cavity (43), and the outer side wall of the pump shell (1) is fixedly connected with a water outlet connecting cavity (44) above.

2. A water pump anti-cavitation protection device according to claim 1, characterized in that: The front surface of the water pumping cavity (2) is fixedly connected with a motor I (11), the output end rear end of the motor I (11) penetrates into the inside of the water pumping cavity (2), and is fixedly connected with a rotating circular block (12), the rear surface of the rotating circular block (12) is rotatably connected with the inside rear surface of the water pumping cavity (2), the outer side wall of the rotating circular block (12) is fixedly connected with a plurality of water pumping leaves (13), the upper surface of the water pumping cavity (2) is fixedly provided with a water outlet upper pipe (14), the right side of the water outlet upper pipe (14) is fixedly communicated with a water pumping pipe (15), the right side of the water pumping pipe (15) is fixedly connected with a motor II (16), the left side of the motor II (16) is fixedly connected with a long rotating rod (17), the left side of the long rotating rod (17) penetrates into the inside of the water pumping pipe (15), the outer side wall of the long rotating rod (17) is fixedly connected with a circle of water pumping pieces (18), the outer side wall right side of the water pumping pipe (15) is fixedly connected with a water inlet cavity (19), the outer side wall of the pump shell (1) is fixedly connected with a water inlet arc cavity (20), the outer side wall below of the pump shell (1) is fixedly communicated with the water inlet arc cavity (20), the water inlet arc cavity (20) is communicated with the water inlet cavity (19), the outer side wall upper surface of the water outlet upper pipe (14) is fixedly connected with an air outlet pipe (21), and the upper surface of the air outlet pipe (21) is fixedly communicated with an air outlet (22).

3. A water pump anti-cavitation protection device according to claim 1, characterized in that: The right side of the pump shell (1) is fixedly connected with a motor III (23), the output end left end of the motor III (23) penetrates into the inside of the pump shell (1), and is fixedly connected with a centrifugal leaf assembly (24).

4. The anti-cavitation protection device for a water supply pump according to claim 1, characterized in that: The outer side wall of the water inlet connecting cavity (43) is fixedly connected with a pressure increasing device (25), the inside of the pressure increasing device (25) is provided with a rotating groove (26), the left side of the inside of the rotating groove (26) is fixedly connected with a pressure increasing pump (27), the output end left end of the pressure increasing pump (27) penetrates to the outside of the pressure increasing device (25), the left side of the outer side wall of the water inlet connecting cavity (43) is fixedly connected with an air inlet cavity (60), the inside of the rotating groove (26) is fixedly connected with a power control cavity (59), the power control cavity (59) is signal connected with the pressure increasing pump (27), the front surface of the power control cavity (59) is rotatably connected with an adjusting knob (28), the outer side wall of the adjusting knob (28) is fixedly connected with a transmission gear one (29), the outer side wall of the adjusting knob (28) is fixedly connected with a limiting strip (30), the power control cavity (59), the front surface of the power control cavity (59) is fixedly connected with a stopper (45) symmetrically, the rear surface of the inside of the rotating groove (26) is fixedly connected with a micro motor (46), the output end front section of the micro motor (46) is fixedly connected with a transmission gear two (47), the transmission gear two (47) is meshingly connected with the transmission gear one (29), the front surface of the transmission gear two (47) is fixedly connected with a rotating column (48), the outer side wall of the rotating column (48) is fixedly connected with a rotating plate (49), the front surface of the rotating plate (49) is fixedly connected with a connecting column (50), the outer side wall of the connecting column (50) is rotatably connected with a short plate (51), the outer side wall of the short plate (51) is rotatably connected with a resisting rod (52), the top end of the resisting rod (52) penetrates to the top end of the pressure increasing device (25), the upper surface left side of the pump shell (1) is fixedly communicated with an exhaust pipe (53), the left end of the exhaust pipe (53) is fixedly connected with a front cover (55), the left side of the front cover (55) is provided with a sliding groove (54), the inside of the sliding groove (54) is slidably connected with a cover (56), the outer side wall of the resisting rod (52) is fixedly connected with the left side of the cover (56), the right side of the micro motor (46) is fixedly connected with an electric control device (57), the right end of the electric control device (57) penetrates to the inside of the pump shell (1), and is fixedly connected with a water pressure and water temperature detection head (58).

5. A water pump anti-cavitation protection device according to claim 2, characterized in that: The front surface of the water inlet cavity (19) is fixedly communicated with a degassing cavity (32) above, the inside of the degassing cavity (32) is fixedly connected with a gas blocking layer (33), the inside of the gas blocking layer (33) is slidably connected with a pressing column (34), the top end of the pressing column (34) penetrates to the outside of the degassing cavity (32), the bottom end of the pressing column (34) is fixedly connected with a sealing circular plate (35), the outer side wall of the pressing column (34) is provided with a spring one (36), the top end of the degassing cavity (32) is provided with an air outlet hole (40), the pressing column (34) is slidably connected with the air outlet hole (40).

6. A water pump anti-cavitation protection device according to claim 1, characterized in that: The lower surface of the pump shell (1) is symmetrically connected with a plurality of support columns (37), and the lower surface of each support column (37) is fixedly connected with a base (38).

7. A water pump anti-cavitation protection device according to claim 1, characterized in that: The right side of the pump shell (1) and the outer side wall of the motor three (23) are fixedly connected with a dustproof cavity (39).

8. A water pump anti-cavitation protection device according to claim 1, characterized in that: The outer side wall of the water outlet connecting cavity (44) is fixedly connected with a connecting plate (41), and the outer side wall of the connecting plate (41) is provided with a plurality of threaded connecting holes (42).

9. The anti-cavitation protection device for a water supply pump according to claim 1, characterized in that: The air inlet cavity (60) comprises a blocking groove (101), the inner right side of the blocking groove (101) is rotatably connected with a baffle (102) through a rotating shaft, the upper surface of the baffle (102) and the inner side wall of the blocking groove (101) are fixedly connected with a spring (103), and the lower surface of the blocking groove (101) is fixedly communicated with a pressurized air pipe (104).

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