Water pump capable of performing fault diagnosis and early warning

Abstract

The invention discloses a water pump capable of carrying out fault diagnosis and early warning, and relates to the technical field of water pumps, the device comprises a centrifugal pump, the outer surface of the centrifugal pump is fixedly connected with a power connection socket, one end, away from the power connection socket, of the centrifugal pump is fixedly communicated with a threaded connector, and the outer surface of the threaded connector is in threaded connection with a nut; the end, away from the centrifugal pump, of the nut fixedly communicates with a water pipe, a lubricating assembly used for supplementing lubricating liquid to the surface of the threaded connector is arranged on the outer side of the centrifugal pump, and an auxiliary assembly used for preventing loosening between the threaded connector and the nut is arranged on the outer side of the centrifugal pump. The lubricating liquid is used for reducing friction force between the threaded connector and the nut, so that the nut is easier to tighten or loosen, the situation that the threaded connector and the nut are clamped or damaged in the using process can be prevented, and when the lubricating liquid drops to the surface of the threaded connector, the nut is easier to tighten or loosen.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and in particular to a water pump capable of performing fault diagnosis and early warning. Background Art

[0002] A water pump is a mechanical device used to transport liquids. It converts mechanical energy into liquid energy by rotating components such as impellers or screws, thereby making the liquid flow. Water pumps are widely used in various fields, including agricultural irrigation, urban water supply, industrial production, fire protection systems, and sewage treatment.

[0003] However, various faults may occur during the operation of the water pump. Since the water pump and the water pipe are connected by bolts, the water pump will vibrate during operation. The connection between the water pump and the water pipe will be affected by the vibration, causing the connection between the water pump and the water pipe to loosen or come off. Loose connections will cause leakage, causing water pump failure, which will cause the entire production line to shut down, resulting in production interruptions and affecting production efficiency and output. If the water pump is used to transport harmful or polluting substances, failures will cause leakage, causing pollution to the environment.

[0004] Secondly, if the leakage is not discovered in time, the water pump's working efficiency will be reduced, because the leaked water needs to be compensated by additional energy, which will increase energy consumption and operating costs. The leaked water will cause additional fluid loss, including energy loss, material loss and environmental loss, resulting in economic losses and waste of resources.

[0005] Therefore, the present invention proposes a water pump capable of fault diagnosis and early warning to improve the shortcomings of traditional technologies, quickly detect leakage problems and alarm, and improve the reliability of bolt connections. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a water pump capable of performing fault diagnosis and early warning, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water pump capable of fault diagnosis and early warning, used to improve the reliability of the water pump connection, including a centrifugal pump, the outer surface of the centrifugal pump is fixedly connected to an electrical socket, the end of the centrifugal pump away from the electrical socket is fixedly connected to a threaded interface, the outer surface of the threaded interface is threadedly connected to a nut, the end of the nut away from the centrifugal pump is fixedly connected to a water pipe, the outside of the centrifugal pump is provided with a lubrication component for replenishing lubricating liquid to the surface of the threaded interface, and the outside of the centrifugal pump is provided with an auxiliary component for preventing loosening between the threaded interface and the nut.

[0008] Preferably, the lubrication assembly includes a piston rod, the end of the piston rod away from the nut is fixedly connected to the side of the centrifugal pump close to the threaded interface, the outer surface of the end of the piston rod away from the centrifugal pump is slidingly connected to a piston cylinder, the outer surface of the piston cylinder is clamped with a connecting rod, the outer surface of the nut is fixedly connected to a fixed ring, and the outer surface of the fixed ring is provided with a ring groove.

[0009] Preferably, the bottom end of the connecting rod slides inside the circular sliding groove.

[0010] Preferably, the auxiliary component includes a component shell, the side of the component shell away from the nut is fixedly connected to the side of the centrifugal pump close to the threaded interface, the side of the centrifugal pump close to the threaded interface is fixedly connected to an auxiliary ring, the outer surface of the auxiliary ring is slidably connected to a sliding cover, the interior of the component shell and the auxiliary ring are movably connected with a first spring sheet and a second spring sheet, the side of the centrifugal pump close to the threaded interface is fixedly connected to a cylinder, the side of the component shell away from the centrifugal pump is fixedly connected to a first auxiliary shell, the outer surface of the first auxiliary shell is fixedly connected to a second auxiliary shell, the outer surface of the first auxiliary shell is fixedly connected to a piston cylinder 2, the interior of the piston cylinder 2 is slidably connected to a piston rod 2, and the outer surface of the nut close to the centrifugal pump is slidably connected to an upper cover plate.

[0011] Preferably, the dimensions of the piston rod 2 and the piston rod 1 at one end inside the piston cylinder 2 and the piston cylinder 1 are respectively adapted to the dimensions of the inner walls of the piston rod 2 and the piston cylinder 1.

[0012] Preferably, the auxiliary ring is located inside the component housing, and the auxiliary ring, the sliding cover, the component housing and the first auxiliary shell all surround the threaded interface.

[0013] Preferably, the first spring piece and the second spring piece are symmetrically arranged with respect to each other.

[0014] Preferably, circular grooves are formed on the surfaces of the first spring piece and the second spring piece, and the cylinder is located inside the circular grooves.

[0015] The water pump capable of fault diagnosis and early warning provided by the present invention has the following beneficial effects:

[0016] 1. By rotating the water pipe and nut to make it move in the direction of the centrifugal pump, the nut drives the connecting rod to move and pushes the piston cylinder to move during the movement. The movement of the piston cylinder drives the piston rod to slide inside the piston cylinder to push out the lubricating liquid, and the lubricating liquid drips onto the surface of the threaded interface. The role of the lubricating liquid is to reduce the friction between the threaded interface and the nut, thereby making the nut easier to tighten or loosen. It can prevent the threaded interface and the nut from getting stuck or damaged during use. When the lubricating liquid drips onto the surface of the threaded interface, it can form a lubricating film between the threaded interface and the nut, making the nut easier to tighten or loosen. It can also reduce the wear and corrosion between the bolt and the nut, thereby extending their service life.

[0017] 2. The nut is rotated until it contacts the sliding cover and pushes the sliding cover, and the sliding cover moves and squeezes in the direction of the second spring sheet. Since the second spring sheet and the first spring sheet are symmetrically arranged, the sliding cover squeezes the second spring sheet while also squeezing the first spring sheet to deform it. After the second spring sheet and the first spring sheet are deformed by pressure, elastic force is generated to push the nut in the opposite direction, so that the threaded interface and the nut fit tightly together to prevent loosening, and ensure that the connection will not loosen due to external force or vibration, thereby improving safety and stability, ensuring that the connection will not leak due to loosening, effectively avoiding problems such as water leakage, improving the working stability of the system, reducing the probability of failure due to loosening, reducing maintenance and repair costs, and also reducing downtime caused by repairs, thereby improving efficiency.

[0018] 3. Through the coordinated use of the first auxiliary shell, the second auxiliary shell, the second piston cylinder and the second piston rod, the pressure changes at the threaded interface and the nut connection can be monitored in real time. Once a leakage is detected, the second piston rod will touch the sensor to alarm, and the alarm will immediately emit a sound or signal to alert the staff, so that the staff can quickly discover the leakage problem and take corresponding measures. This helps to prevent the leakage from occurring, and promptly repair and restore the normal operation of the machine, avoiding the leakage problem from being undetected for a long time and causing water waste or equipment damage, and prevent further damage to the equipment, reducing maintenance costs. If the connection between the threaded interface and the nut leaks, water or other materials will flow into the inside of the sliding cover from the gap between the threaded interface and the nut connection. The closure of the sliding cover can temporarily slow down the amount of water or material leakage, and buy time for the staff to repair and prepare while the alarm sounds. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a three-dimensional top view of the overall structure of the present invention;

[0021] Figure 3It is a schematic diagram of the overall local structure of the present invention;

[0022] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0023] Figure 5 It is a partial structural cross-sectional view of the lubrication component of the present invention;

[0024] Figure 6 This is a schematic diagram of the partial structure of the auxiliary component of the present invention;

[0025] Figure 7 for Figure 6 The enlarged structural diagram at B in the middle;

[0026] Figure 8 This is a schematic diagram of the internal structure of the auxiliary component of the present invention;

[0027] Figure 9 This is a partial structural cross-sectional view of the auxiliary component of the present invention;

[0028] Figure 10 for Figure 9 Enlarged structural diagram at point C in the middle.

[0029] The numbers in the figure represent:

[0030] 1. Centrifugal pump; 2. Electrical socket; 3. Water pipe; 4. Threaded joint; 5. Nut;

[0031] 6. Lubrication assembly; 61. Piston rod 1; 62. Piston cylinder 1; 63. Connecting rod; 64. Fixed ring; 65. Ring slide;

[0032] 7. Auxiliary component; 71. Component housing; 72. Auxiliary ring; 73. Sliding cover; 74. First spring leaf; 75. Second spring leaf; 76. Cylinder; 77. First auxiliary shell; 78. Second auxiliary shell; 79. Second piston cylinder; 710. Second piston rod; 711. Upper cover. DETAILED DESCRIPTION

[0033] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] refer to Figures 1 to 10 As shown, a preferred embodiment of the present invention will be described in detail below:

[0035] A water pump capable of fault diagnosis and early warning is used to improve the reliability of the water pump connection, comprising a centrifugal pump 1, the outer surface of the centrifugal pump 1 is fixedly connected to an electrical socket 2, the end of the centrifugal pump 1 away from the electrical socket 2 is fixedly connected to a threaded interface 4, the outer surface of the threaded interface 4 is threadedly connected to a nut 5, the end of the nut 5 away from the centrifugal pump 1 is fixedly connected to a water pipe 3, a lubrication component 6 for replenishing lubricating liquid to the surface of the threaded interface 4 is provided on the outside of the centrifugal pump 1, and an auxiliary component 7 for preventing loosening between the threaded interface 4 and the nut 5 is provided on the outside of the centrifugal pump 1.

[0036] The lubrication assembly 6 includes a piston rod 61, and the end of the piston rod 61 away from the nut 5 is fixedly connected to the side of the centrifugal pump 1 near the threaded interface 4. The outer surface of the end of the piston rod 61 away from the centrifugal pump 1 is slidably connected to the piston cylinder 62, and the outer surface of the piston cylinder 62 is clamped with a connecting rod 63. The outer surface of the nut 5 is fixedly connected to a fixed ring 64, and the outer surface of the fixed ring 64 is provided with a circular groove 65. The dimensions of the piston rod 61 and the piston rod 2 710 at one end inside the piston cylinder 1 62 and the piston cylinder 2 79 are respectively adapted to the inner wall dimensions of the piston cylinder 1 62 and the piston rod 2 710. The bottom end of the connecting rod 63 slides inside the circular groove 65 and is moved toward the centrifugal pump 1 by rotating the water pipe 3 and the nut 5. During the movement, the nut 5 drives the connecting rod 63 to move and pushes the piston cylinder 62 to move. The movement of the piston cylinder 62 drives the piston rod 61 to slide inside the piston cylinder 62 to push out the lubricating liquid, and the lubricating liquid drips onto the surface of the threaded interface 4. The function of the lubricating liquid is to reduce the friction between the threaded interface 4 and the nut 5, so that the nut 5 is easier to tighten or loosen. It can prevent the threaded interface 4 and the nut 5 from getting stuck or damaged during use. When the lubricating liquid drips onto the surface of the threaded interface 4, it can form a lubricating film between the threaded interface 4 and the nut 5, making the nut 5 easier to tighten or loosen, and also reduce the wear and corrosion between the threaded interface 4 and the nut 5, thereby extending their service life.

[0037] The auxiliary component 7 includes a component housing 71, and the side of the component housing 71 away from the nut 5 is fixedly connected to the side of the centrifugal pump 1 close to the threaded interface 4. The side of the centrifugal pump 1 close to the threaded interface 4 is fixedly connected to an auxiliary ring 72, and the outer surface of the auxiliary ring 72 is slidably connected to a sliding cover 73. A first spring piece 74 and a second spring piece 75 are movably connected between the interior of the component housing 71 and the auxiliary ring 72. The nut 5 is rotated until it touches the sliding cover 73 and pushes the sliding cover 73. The sliding cover 73 moves toward the second spring piece 75 and is squeezed. Since the second spring piece 75 and the first spring piece 74 are symmetrically arranged, the sliding cover 73 squeezes the second spring piece 75 while also squeezing the first spring piece 74 to cause it to deform. The second spring piece 75 and the first spring piece 74 are compressed. After the force is deformed, the elastic force is generated to push the nut 5 in the opposite direction, so that the threaded interface 4 and the nut 5 are tightly matched to prevent loosening, and can ensure that the connection will not be loosened due to external force or vibration, thereby improving safety and stability, ensuring that the connection will not leak due to loosening, effectively avoiding problems such as water leakage, improving the working stability of the system, reducing the probability of failure due to loosening, reducing maintenance and repair costs, and also reducing downtime caused by repairs, thereby improving efficiency. A cylinder 76 is fixedly connected to the side of the centrifugal pump 1 close to the threaded interface 4. The cylinder 76 can prevent the first spring piece 74 and the second spring piece 75 from rotating in the component housing 71. The cylinder 76 limits the first spring piece 74 and the second spring piece 75, limiting the first spring piece The rotational freedom of 74 and the second spring piece 75 helps to ensure that the first spring piece 74 and the second spring piece 75 maintain relative positions during assembly or operation, increases the overall stability and working consistency of the component, and helps to accurately control the movement and deformation of the first spring piece 74 and the second spring piece 75 in a specific direction, thereby optimizing the transmission characteristics of force and energy, limiting the possible excessive rotation or distortion of the first spring piece 74 and the second spring piece 75, thereby reducing the risk of damage or failure thereof. A first auxiliary shell 77 is fixedly connected to the side of the component housing 71 away from the centrifugal pump 1, and a second auxiliary shell 78 is fixedly connected to the outer surface of the first auxiliary shell 77. A sensor is fixedly installed on the inner wall of the second auxiliary shell 78, and the sensor is in the same position as the piston cylinder 2 79. A horizontal plane, the outer surface of the first auxiliary shell 77 is fixedly connected to the piston cylinder 2 79, the interior of the piston cylinder 2 79 is penetrated and slidably connected to the piston rod 2 710, the outer surface of the nut 5 close to the centrifugal pump 1 is slidably connected to the upper cover plate 711, the auxiliary ring 72 is located inside the component housing 71, the auxiliary ring 72, the sliding cover 73, the component housing 71 and the first auxiliary shell 77 all surround the threaded interface 4, the first spring sheet 74 and the second spring sheet 75 are symmetrically arranged, and a circular groove is opened on the surface of the first spring sheet 74 and the second spring sheet 75, and the cylinder 76 is located inside the circular groove. Through the coordinated use of the first auxiliary shell 77, the second auxiliary shell 78, the piston cylinder 2 79 and the piston rod 2 710, the pressure changes at the connection between the threaded interface 4 and the nut 5 can be monitored in real time.Once a leak is detected, piston rod 2 710 will touch the sensor to sound an alarm, and the alarm will immediately emit a sound or signal to alert the staff, allowing them to quickly discover the leak and take appropriate measures. This helps prevent the leak from occurring and promptly repair and restore the normal operation of the machine, avoiding the leak problem from remaining undetected for a long time, causing water waste or equipment damage, and preventing further damage to the equipment, reducing maintenance costs. If the connection between the threaded interface 4 and the nut 5 leaks, water or other materials will flow into the interior of the sliding cover 73 through the gap between the threaded interface 4 and the nut 5. The closure of the sliding cover 73 can temporarily slow the amount of water or material leakage and buy time for the staff to repair and prepare while the alarm sounds.

[0038] The following is the entire working process and working principle of the above embodiment:

[0039] First, the operator puts the nut 5 and the water pipe 3 onto the threaded interface 4 and rotates the nut 5 and the water pipe 3. During the rotation of the nut 5, the fixed ring 64 is driven to rotate, and when the fixed ring 64 is rotated, the bottom of the connecting rod 63 slides inside the ring groove 65. Since the threaded interface 4 and the nut 5 are threadedly connected, the nut 5 will also move toward the direction close to the centrifugal pump 1 during the rotation. During the movement of the nut 5, the connecting rod 63 is driven to move, and when the connecting rod 63 moves, the piston cylinder 62 is driven to move. When the piston cylinder 62 moves, one end of the piston rod 61 slides on the inner wall of the piston cylinder 62, and one end of the piston rod 61 enters the interior of the piston cylinder 62 as the piston cylinder 62 moves. There is lubricating fluid inside the piston cylinder 62, and the lubricating fluid is squeezed out by the push of the piston rod 61. Since the outlet end of the piston cylinder 62 is located at the threaded interface 4, the lubricating liquid is squeezed out and drips onto the surface of the threaded interface 4, thereby reducing the friction between the threaded interface 4 and the nut 5. The rotation of the nut 5 drives the fixed ring 64 to rotate without driving the connecting rod 63 to rotate. When the nut 5 moves, it drives the connecting rod 63 to move, so that the lubricating liquid is dripped onto the surface of the threaded interface 4 while the nut 5 is installed. The role of the lubricating liquid is to reduce the friction between the threaded interface 4 and the nut 5, thereby making the nut 5 easier to tighten or loosen. It can prevent the threaded interface 4 and the nut 5 from getting stuck or damaged during use. When the lubricating liquid drips onto the surface of the threaded interface 4, it can form a lubricating film between the threaded interface 4 and the nut 5, making it easier to tighten or loosen the nut 5, and also reduce the wear and corrosion between the threaded interface 4 and the nut 5, thereby extending their service life.

[0040] When the nut 5 rotates and moves, it touches the sliding cover 73, and the nut 5 drives the sliding cover 73 to move in the direction close to the second spring piece 75. The sliding cover 73 slides on the surface of the auxiliary ring 72, and the sliding cover 73 moves and touches the second spring piece 75. The sliding cover 73 is pushed toward the inside of the component housing 71, and the sliding cover 73 squeezes the second spring piece 75 to deform it. The second spring piece 75 squeezes the first spring piece 74 to deform it. After the second spring piece 75 and the first spring piece 74 are deformed by pressure, they generate elastic force to push the nut 5 in the opposite direction. This makes the nut 5 and the threaded interface 4 fit tightly together, which can prevent the nut 5 from loosening. By rotating the nut 5 until it touches the sliding cover 73 and pushes the sliding cover 73, the sliding cover 73 moves in the direction of the second spring piece 75 and is squeezed. Since the second spring piece 75 and the first spring piece 74 are symmetrically arranged, the sliding cover 73 squeezes the second spring piece. At the same time as 75, the first spring piece 74 is squeezed to deform it. After the second spring piece 75 and the first spring piece 74 are deformed by the pressure, an elastic force is generated to push the nut 5 in the opposite direction, so that the threaded interface 4 and the nut 5 are tightly matched to prevent loosening. The second spring piece 75 and the first spring piece 74 have a certain elasticity and can absorb impact and vibration energy, which helps to reduce the relative movement between the connecting parts, reduce the risk of loosening, and protect the integrity of the connection, thereby ensuring that the connecting parts will not loosen due to external force or vibration, improving safety and stability, ensuring that the connection will not leak due to loosening, effectively avoiding problems such as water leakage, improving the working stability of the system, reducing the probability of failure due to loosening, reducing maintenance and repair costs, and also reducing downtime caused by repairs, thereby improving efficiency.

[0041] After the threaded interface 4 and the nut 5 are installed and stabilized, the upper cover 711 is moved to the top of the first auxiliary shell 77 to cover its opening. The operator fixes the upper cover 711 at the opening of the first auxiliary shell 77 to make it closed. If leakage occurs between the threaded interface 4 and the nut 5, the inside of the first auxiliary shell 77 will be filled with water or material, causing the air pressure to increase. The increase in water or material inside the component housing 71 will push the piston rod 2 710 to move away from the first auxiliary shell 77. The piston rod 2 710 moves away from the first auxiliary shell 77. A sensor is fixedly installed on the inner wall of the second auxiliary shell 78. The sensor and the piston rod 2 710 are on the same horizontal plane. Through the coordinated use of the first auxiliary shell 77, the second auxiliary shell 78, the piston cylinder 2 79 and the piston rod 2 710, it can be Real-time monitoring of the pressure changes at the connection between the threaded interface 4 and the nut 5. Once a leakage is detected, the piston rod 2 710 will touch the sensor to alarm, and the alarm will immediately emit a sound or signal to alert the staff, so that the staff can quickly discover the leakage problem and take corresponding measures. This helps to prevent the leakage from occurring, and promptly repair and restore the normal operation of the machine, avoiding the leakage problem from being undetected for a long time and causing water waste or equipment damage, and prevent further damage to the equipment, reducing maintenance costs. The connection between the threaded interface 4 and the nut 5 leaks, and water or other materials flow into the inside of the sliding cover 73 from the gap at the connection between the threaded interface 4 and the nut 5. The closure of the sliding cover 73 can temporarily slow down the amount of water or material leakage, and buy time for the staff to repair and prepare while the alarm sounds.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A water pump capable of fault diagnosis and early warning, used to improve the reliability of the water pump connection, characterized in that: The invention comprises a centrifugal pump (1), wherein the outer surface of the centrifugal pump (1) is fixedly connected to an electric socket (2), the end of the centrifugal pump (1) away from the electric socket (2) is fixedly connected to a threaded interface (4), the outer surface of the threaded interface (4) is threadedly connected to a nut (5), the end of the nut (5) away from the centrifugal pump (1) is fixedly connected to a water pipe (3), the outer side of the centrifugal pump (1) is provided with a lubricating component (6) for replenishing lubricating liquid on the surface of the threaded interface (4), and the outer side of the centrifugal pump (1) is provided with an auxiliary component (7) for preventing loosening between the threaded interface (4) and the nut (5).

2. A water pump capable of fault diagnosis and early warning according to claim 1, characterized in that: The lubricating assembly (6) includes a piston rod (61), the end of the piston rod (61) away from the nut (5) is fixedly connected to the side of the centrifugal pump (1) close to the threaded interface (4), the outer surface of the end of the piston rod (61) away from the centrifugal pump (1) is slidably connected to a piston cylinder (62), the outer surface of the piston cylinder (62) is clamped with a connecting rod (63), the outer surface of the nut (5) is fixedly connected to a fixed ring (64), and the outer surface of the fixed ring (64) is provided with a ring groove (65).

3. The water pump capable of fault diagnosis and early warning according to claim 2, characterized in that: The bottom end of the connecting rod (63) slides inside the circular sliding groove (65).

4. The water pump capable of fault diagnosis and early warning according to claim 2, characterized in that: The auxiliary component (7) includes a component housing (71), a side of the component housing (71) away from the nut (5) is fixedly connected to a side of the centrifugal pump (1) close to the threaded interface (4), an auxiliary ring (72) is fixedly connected to the side of the centrifugal pump (1) close to the threaded interface (4), a sliding cover (73) is slidably connected to the outer surface of the auxiliary ring (72), a first spring sheet (74) and a second spring sheet (75) are movably connected between the interior of the component housing (71) and the auxiliary ring (72), and the centrifugal pump (1) close to the threaded interface (4) is fixedly connected to the auxiliary ring (72). A cylinder (76) is fixedly connected to one side of the threaded interface (4); a first auxiliary shell (77) is fixedly connected to the side of the component housing (71) away from the centrifugal pump (1); a second auxiliary shell (78) is fixedly connected to the outer surface of the first auxiliary shell (77); a second piston cylinder (79) is fixedly connected to the outer surface of the first auxiliary shell (77); a second piston rod (710) is slidably connected to the interior of the second piston cylinder (79); and an upper cover plate (711) is slidably connected to the outer surface of one end of the nut (5) close to the centrifugal pump (1).

5. The water pump capable of fault diagnosis and early warning according to claim 4, characterized in that: The dimensions of the piston rod 2 (710) and the piston rod 1 (61) at one end inside the piston cylinder 2 (79) and the piston cylinder 1 (62) are respectively adapted to the dimensions of the inner walls of the piston rod 2 (710) and the piston cylinder 1 (62).

6. The water pump capable of fault diagnosis and early warning according to claim 4, characterized in that: The auxiliary ring (72) is located inside the component housing (71), and the auxiliary ring (72), the sliding cover (73), the component housing (71) and the first auxiliary shell (77) all surround the threaded interface (4).

7. The water pump capable of fault diagnosis and early warning according to claim 4, characterized in that: The first spring piece (74) and the second spring piece (75) are arranged symmetrically to each other.

8. The water pump capable of fault diagnosis and early warning according to claim 4, characterized in that: Circular grooves are formed on the surfaces of the first spring piece (74) and the second spring piece (75), and the cylinder (76) is located inside the circular grooves.

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