Self-balancing multi-stage pump and machining method thereof

Abstract

The self-balancing multi-stage pump comprises a motor and a pump shaft, the motor used for transmission is arranged on the multi-stage pump, an installation position is arranged on the motor, the pump shaft is installed at the installation position, the pump shaft is driven by the motor to act, an impeller is arranged on the pump shaft, and the impeller is arranged on the pump shaft. An installation part is arranged between the impeller and the pump shaft, vibration and noise caused by unbalance are reduced, the stability of the pump is improved, the service life of the pump is prolonged, the installation precision between the impeller and the pump shaft is high, efficient operation of the pump is ensured, the design of an installation boss and a locking screw is adopted, connection between the impeller and the pump shaft is more stable, and the service life of the pump is prolonged. Loosening and deviation are avoided, and therefore the working efficiency and reliability of the pump are improved.

Description

Technical Field

[0001] The present invention relates to a structure and method of a multistage pump, and particularly to a self-balancing multistage pump and its processing method. Background Art

[0002] The horizontal multistage pump is a drainage pump, suitable for mine, factory and urban water supply and drainage, used to transport clear water without solid particles or liquids with physical and chemical properties similar to clear water. Multistage centrifugal pumps are applied to the transportation of industrial liquids, urban water supply and drainage, high-rise building pressurized water supply, garden sprinkler irrigation, fire pressurization, long-distance water supply, heating, cold and warm water circulation pressurization such as in bathrooms and equipment matching, as well as air-conditioning unit circulation and cooling water transportation. While bringing convenience to people, multistage pumps have the following advantages. Due to their simple and compact structure, for the same delivery volume, multistage pumps occupy less area, are lighter in weight, consume less materials, and have lower requirements for the foundation compared to reciprocating pumps, so the manufacturing and installation costs are low. A self-balancing multistage centrifugal pump usually consists of a stator component and a rotor component. The prime mover drives the pump to rotate, sucks in the medium from the inlet section, is pressurized by the positive impeller group, flows through the transition pipe into the secondary inlet section, is pressurized again by the reverse impeller group, and flows out from the outlet section, thus continuously transporting the medium.

[0003] In the prior art: CN202121120631.9, an energy-saving self-balancing multistage pump. The utility model belongs to the technical field of multistage pumps, and discloses an energy-saving self-balancing multistage pump, including a multistage pump main body. A multistage pump base is arranged at the bottom end of the multistage pump main body, and a liquid inlet end is arranged at the front end of the multistage pump main body. An energy-saving liquid inlet processor is detachably connected to the front end of the liquid inlet end. The energy-saving liquid inlet processor includes: a connection mechanism detachably connected to the front end of the liquid inlet end; an energy-saving mechanism fixedly connected to the inside of the connection mechanism. By setting the energy-saving mechanism inside the connection mechanism, a vortex is formed inside the connection cylinder. Using the attraction of the vortex and the rotational inertia of the fan blades, the external liquid is attracted and drawn into the inside of the multistage pump main body, without completely relying on the prime mover driving device inside the multistage pump main body to suck water, reducing the energy consumption of the prime mover inside the multistage pump main body, making the device more energy-saving in use, and effectively enhancing the practicability of the device.

[0004] Although in the prior art, it is not necessary to completely rely on the prime mover driving device inside the multistage pump main body to suck water, reducing the energy consumption of the prime mover inside the multistage pump main body, making the device more energy-saving in use and effectively enhancing the practicability of the device, there is also a problem that the position at the bottom of the multistage pump cannot be adjusted. Summary of the Invention

[0005] In order to overcome the deficiency of inconvenient position movement in the prior art, the present invention provides a self-balancing multistage pump and its processing method.

[0006] The present invention is implemented by the following technical solutions: A self-balancing multi-stage pump and its processing method, including a motor and a pump shaft. A motor for transmission is provided on the multi-stage pump. An installation position is provided on the motor, and a pump shaft is installed at the installation position. The pump shaft operates driven by the motor. An impeller is provided on the pump shaft. An installation component is provided between the impeller and the pump shaft. The installation component is an installation boss. The impeller is inserted into the installation boss. A locking screw is provided between the impeller and the installation boss. A pump casing is provided outside the impeller. An inlet and an outlet are provided on the pump casing;

[0007] An inlet guide vane is provided at the inlet position. An inclination angle is provided between the inlet guide vane and the inlet wall. The inclination angle is 2-8°. A grading outlet module is provided at the outlet position. The grading outlet module uses a control grading plate. Control crossbars are provided on both sides of the outlet position. The control crossbars are assembled with the outlet position by threads. A control ball is provided on one side of the control crossbar. The control balls are denoted as a left control ball and a right control ball. The control crossbar is divided into a left crossbar and a right crossbar. A left control ball is provided on one side of the left crossbar. A right control ball is provided on one side of the right crossbar;

[0008] An assembly port is provided on the grading outlet. A control grading plate is provided in the assembly port. Grooves are provided on the control grading plate. The grooves are symmetrically distributed on both sides of the control grading plate. The left control ball and the right control ball are respectively in contact with the control grading plate. A position limiter is provided at the top of the control grading plate.

[0009] The position limiter is a small cylinder. A drive shaft is provided on the small cylinder. A chuck is provided on the drive shaft. A card slot is provided on the chuck. The control grading plate is clamped by the card slot. An oil passage is provided at the top of the card slot. A oil pipe is provided on the oil passage. An oil storage tank is provided at the top of the oil pipe. An electromagnetic control valve body is provided between the oil storage tank and the oil pipe.

[0010] Support frames are provided on both sides of the small cylinder. An adaptive assembly plate is provided at the bottom of the support frame. The adaptive assembly plate is a square plate. An assembly hole is provided in the middle of the square plate. The support frame is assembled in the assembly hole. Edge grooves are provided on both sides of the square plate. Assembly screws are provided in the edge grooves.

[0011] The bottom of the pump casing is provided with a bottom mounting platform, on which a resting position is arranged. The resting position is for resting the pump casing of a multi-stage pump. A base is arranged on the bottom mounting platform, and an adjusting component is arranged between the bases. The adjusting component is an adjusting screw.

[0012] A chute is arranged on the bottom mounting platform, and a slider is arranged on the base. The slider is fitted in the chute on the bottom mounting platform. A threaded hole is arranged on the base, and the threaded hole is self-equipped with an adjusting screw. An assembly head is arranged on the adjusting screw, a connecting end is arranged on the assembly head, and a small motor is assembled on the connecting end.

[0013] (1) Preparation of processing materials: Multiple high-strength alloy steel plates and steel columns need to be prepared. Then, these steel plates are cut and prepared according to the drawings, and these steel plates are placed in different areas according to different types and usage places. Then, the steel columns are cut and stored, and the steel columns are pretreated. A pretreatment raw material is sprayed on the outer wall of the steel column. The pretreatment raw material is a pretreatment stock solution, and the pretreatment stock solution can adopt a pretreatment liquid composed of quartz sand, fine-grained steel sand, boric acid, and an adhesive. The pretreatment liquid is brushed on the outer surface of the steel column manually.

[0014] (2) Preparation for machining: The pretreated steel column is cleaned. After cleaning, the steel column can be machined better. The steel column is placed on a lathe for machining so that the steel column can be used as the pump shaft of a multi-stage pump during machining. During the machining of the steel column, the outer surface needs to be detected for a period of time. During the detection, a surface imager is used to collect the surface pattern. The collected image is transmitted to a computer, and the image of the outer surface of the steel column is compared by relying on the comparison software in the computer. After the comparison, the subsequent machining of the steel column is carried out. Such multiple image collections and then multiple machining operations make the steel column machined into a qualified pump shaft.

[0015] (3) Fabrication of the pump casing: The cut steel plates are welded in different sizes, and the pump casing is formed by welding the steel plates. After the pump casing is welded, the welds need to be detected. During the weld detection, a weld imager is used to collect the weld images. The collected weld images are transmitted and compared, so that the welding effect of the welds can be analyzed. The weld stress can be calculated and processed by relying on calculation software, meeting the requirements of weld strength.

[0016] (4) The processed pump housing is subjected to subsequent treatment. During the subsequent treatment, the pump housing is placed in a pretreatment room for treatment. An enhanced coating is sprayed on the outer wall of the pump housing. The enhanced coating is a carbide coating or an alumina coating. An external coating is sprayed on the outer surface of the enhanced coating. The external coating is a titanium nitride coating;

[0017] Compared with the prior art, the advantages of the present invention are as follows: (1) The self-balancing function ensures that the pump can automatically adjust during operation, reducing mechanical wear and energy consumption. Through the design of the motor and the pump shaft, the pump can achieve self-balancing during operation, reducing vibration and noise caused by imbalance, improving the stability and service life of the pump. The installation accuracy between the impeller and the pump shaft is high, ensuring the efficient operation of the pump. The design of the mounting boss and the locking screw makes the connection between the impeller and the pump shaft more stable, avoiding loosening and offset, thereby improving the working efficiency and reliability of the pump.

[0018] (2) The design of the inlet guide vane and the staged outlet module optimizes the fluid flow path, improving the hydraulic performance of the pump. The inclination angle (2 - 8°) of the inlet guide vane helps to reduce hydraulic losses. The staged outlet module realizes the uniform distribution and flow control of the fluid by controlling the staging plate, further improving the efficiency of the pump. The staged outlet module adopts the design of the control crossbar and the control ball, providing precise flow control. By adjusting the position of the control crossbar, the flow rate of the staged outlet can be precisely controlled to adapt to different working requirements, improving the adaptability and flexibility of the pump.

[0019] (3) The design of the oil circuit, the oil pipe and the electromagnetic control valve body ensures the sealing and lubrication effect of the pump. Through the oil circuit and the oil pipe on the small cylinder, the lubricating oil is delivered to the sealing part. The electromagnetic control valve body can adjust the flow rate of the lubricating oil as needed, ensuring the efficient sealing and good lubrication of the pump. The design of the support frame and the adaptive assembly plate improves the structural stability and adaptability of the pump. The adaptive assembly plate at the bottom of the support frame can be adjusted according to different installation environments, ensuring the stability and reliability of the pump under different working conditions.

[0020] (4) The design of the chute and the slider on the base makes the installation and adjustment of the pump more convenient. Through the cooperation of the chute and the slider, the position and height of the pump can be easily adjusted. At the same time, the small motor on the assembly head also facilitates the maintenance and repair of the pump. Using high-strength alloy steel plates and steel columns ensures the durability and corrosion resistance of the pump. Selecting high-quality materials to make the pump housing and the pump shaft not only improves the strength and corrosion resistance of the pump, but also extends the service life of the pump.

[0021] (5) The processing inspection is carried out by using a surface imager and comparison software, ensuring the processing accuracy of the parts. Through advanced processing technologies and inspection means, the high precision and high quality of the parts are guaranteed, thus improving the overall performance and reliability of the pump. This self-balancing multistage pump demonstrates excellent performance and reliability through its unique design and advanced processing technologies, and is applicable to various industrial applications where high efficiency, high stability, and long service life are required. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a partially enlarged view of the present invention;

[0024] Figure 3 is a partially enlarged view of the present invention;

[0025] Figure 4 is a partially enlarged view of the present invention;

[0026] Figure 5 is a schematic diagram of the adjusting screw and the slider of the present invention;

[0027] In the figure: 1 is the motor, 2 is the pump shaft, 3 is the impeller, 4 is the mounting boss, 5 is the pump casing, 6 is the inlet, 7 is the outlet, 8 is the inlet guide vane, 9 is the control grading plate, 10 is the control cross bar, 11 is the position limiter, 12 is the chuck, 13 is the oil pipe, 14 is the electromagnetic control valve body, 15 is the oil storage tank, 16 is the support frame, 17 is the bottom mounting platform, 18 is the base, 19 is the adjusting screw, 20 is the chute, 21 is the slider, and 22 is the small motor. Detailed Embodiments

[0028] Next, in combination with the drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0029] A self-balancing multistage pump and its processing method, including a motor 1 and a pump shaft 2. A motor 1 for transmission is provided on the multistage pump. An installation position is provided on the motor 1, and the pump shaft 2 is installed at the installation position. The pump shaft 2 operates driven by the motor 1. An impeller 3 is provided on the pump shaft 2. An installation component is provided between the impeller 3 and the pump shaft 2. The installation component is an installation boss 4. The impeller is inserted into the installation boss 4. A locking screw is provided between the impeller 3 and the installation boss 4. A pump casing 5 is provided outside the impeller 3. An inlet 6 and an outlet 7 are provided on the pump casing 5. Through the mutual cooperation of the motor 1 and the pump shaft 2, the self-balancing multistage pump realizes the function of automatic adjustment during operation, effectively reducing vibration and noise caused by imbalance, improving the stability and service life of the multistage pump. The design of using an installation boss 4 and a locking screw between the impeller 3 and the pump shaft 2 ensures high installation accuracy and firm connection, avoiding loosening and offset, thus ensuring the efficient operation of the pump, not only improving the working efficiency of the pump, but also enhancing its reliability and ensuring long-term stable operation.

[0030] An inlet guide vane 8 is provided at the position of the inlet 6. An inclination angle is provided between the inlet guide vane 8 and the inlet wall. The inclination angle of the inlet guide vane 8 is 2 - 8°. A staged outlet module is provided at the outlet position. The staged outlet module uses a control grading plate 9. Control crossbars 10 are provided on both sides of the outlet position. The control crossbars 10 and the outlet position are assembled by means of threads. A control ball 11 is provided on one side of the control crossbar 10. The control ball 11 is denoted as the left control ball and the right control ball. The control crossbar 10 is divided into a left crossbar and a right crossbar. A left control ball is provided on one side of the left crossbar, and a right control ball is provided on one side of the right crossbar. In order to enable the multistage pump to adjust the water flow at the outlet, the inlet guide vane can be relied on for diversion. The inclination angle of the inlet guide vane 8 is 2 - 8°, which helps to reduce hydraulic losses and enables the fluid to enter the pump more smoothly. The staged outlet module realizes the uniform distribution and flow control of the fluid through the control grading plate 9, further improving the efficiency of the pump. In addition, the staged outlet module uses the design of control crossbars and control balls to provide precise flow control. By adjusting the position of the control crossbar 10, different working requirements can be adapted. Relying on the cooperation of the control crossbar 10 and the control ball, the rising height of the control grading plate 9 can be well controlled, so that the water flow at the outlet can be controlled, increasing the adaptability and flexibility of the pump.

[0031] There is an assembly port provided at the stepped outlet. A control grading plate 9 is arranged within the said assembly port. Grooves are provided on the control grading plate 9, and the grooves are symmetrically distributed on both sides of the control grading plate 9. The left control ball and the right control ball are respectively in contact with the control grading plate 9. A position limiter 11 is provided at the top of the control grading plate 9. Relying on the position limiter 11, the position of the control grading plate can be well adjusted and fixed. The position limiter 11 is a small cylinder. A drive shaft is provided on the small cylinder. A chuck 12 is provided on the drive shaft. A clamping groove is provided on the chuck 12, and the clamping groove clamps the control grading plate 9. The chuck 12 and the drive shaft are movably threadedly assembled. When disassembly is required, directly disassemble between the chuck and the drive shaft. An oil passage is provided at the top of the clamping groove, and a tubing 13 is provided on the oil passage. The design of the oil passage, the tubing 13 and the electromagnetic control valve body 14 is adopted. Through the oil passage and the tubing on the small cylinder, the lubricating oil is accurately delivered to the sealing part, and the electromagnetic control valve body 14 adjusts the flow rate of the lubricating oil as required, ensuring the efficient sealing and good lubrication of the pump, improving the working efficiency of the pump, and also extending the service life of the pump. A storage oil tank 15 is provided at the top of the tubing 13, and an electromagnetic control valve is provided between the storage oil tank 15 and the tubing 13.

[0032] Support frames 16 are provided on both sides of the small cylinder. An adaptive assembly plate is provided at the bottom of the support frames 16. The adaptive assembly plate is a square plate. An assembly hole is provided in the middle of the steering wheel. The support frames are assembled in the assembly hole. Edge grooves are provided on both sides of the square plate, and assembly screws are provided in the edge grooves. A bottom mounting platform 17 is provided at the bottom of the pump casing 5. A resting position is provided on the bottom mounting platform 17, and the pump casing 5 of the multi-stage pump is rested on the resting position. A base 18 is provided on the bottom mounting platform, and an adjusting component is provided between the bases 18. The adjusting component is an adjusting screw 19.

[0033] In order to enable the base 18 on the bottom mounting platform 17 to automatically adjust the clearance and position, an adjustment screw 19 is provided on the base 18. By relying on the cooperation of the adjustment screw 19 and the small motor 22, the position of the base 18 can be well adjusted, making the position adjustment of the base 18 more convenient and efficient. The chute 20 and the slider 21 on the base 18 are designed to make the installation and adjustment of the pump more convenient. Through the cooperation of the chute and the slider, the position adjustment of the base 18 is made more convenient. The bottom mounting platform 17 is provided with a chute 20, the base 18 is provided with a slider 21, and the slider is fitted in the chute 20 on the bottom mounting platform 17. The base 18 is provided with a threaded hole, and the threaded hole is equipped with an adjustment screw 19. An assembly head is provided on the adjustment screw 19, a connection end is provided on the assembly head, and a small motor 22 is assembled on the connection end.

[0034] (1) Preparation of processing materials. Multiple high-strength alloy steel plates and steel columns need to be prepared. Then, these plates are cut and prepared according to the drawings, and these plates are placed in different areas according to different types and usage places. Then, the steel columns are cut and stored, and the steel columns are pretreated. A pretreatment raw material is sprayed on the outer wall of the steel column. The pretreatment raw material is a pretreatment stock solution. The pretreatment stock solution can adopt a pretreatment liquid composed of quartz sand, fine-grained steel sand, boric acid, and an adhesive. The pretreatment liquid is brushed on the outer surface of the steel column by manpower. Spraying a pretreatment raw material on the outer wall of the steel column, such as a pretreatment liquid composed of quartz sand, fine-grained steel sand, boric acid, and an adhesive, can increase the surface roughness of the steel column. At the same time, the adhesive component in the pretreatment liquid can enhance the adhesion between the coating and the surface of the steel column. Components such as quartz sand and fine-grained steel sand in the pretreatment raw material can form a uniform protective layer on the surface of the steel column, playing a certain isolation role to prevent the corrosion of the steel column by the external environment. Components such as boric acid may have the effect of inhibiting the corrosion reaction, further enhancing the anti-corrosion ability of the steel column. In the operating environment of the pump, the pump shaft often comes into contact with various media. This anti-corrosion performance is crucial for ensuring the normal operation of the pump.

[0035] (2) Preparation for machining: Clean the steel column after pretreatment. After cleaning, the steel column can be cut better. Place the steel column on the machining lathe for cutting, so that the steel column can be used as the pump shaft of the multi-stage pump. When machining the steel column, it takes a period of time to inspect the outer surface. During the inspection, a surface imager is used to collect surface patterns. The collected images are transferred to the computer. The images of the outer surface of the steel column are compared with the comparison software in the computer. After the comparison, the steel column is processed. After multiple image collections and multi-level processing, the steel column can be processed into a qualified pump shaft. The surface imager can collect images of the outer surface of the steel column with high precision. After transferring them to the computer, the actual image can be accurately compared with the design standard with the help of the comparison software. This digital comparison method can detect tiny dimensional deviations. Through this image comparison technology, the steel column size can be discovered and adjusted in time to ensure that the final pump shaft size meets the strict design requirements. Multiple image collections and multi-level processing processes form a closed-loop precision control system. Image acquisition and comparison are performed after each level of processing. The next level of processing is guided and adjusted based on the comparison results. The surface imager can obtain three-dimensional image information of the outer surface of the steel column, including shape parameters such as cylindricity, roundness, and straightness. The comparison software can analyze these shape parameters, reduce the cutting amount of this part in subsequent processing, or adjust the movement trajectory of the tool, so that the shape of the steel column gradually approaches the design requirements, ensuring the shape accuracy of the pump shaft. The entire image acquisition and comparison process can be completed in a few minutes, greatly shortening the inspection time and improving production efficiency. Moreover, once a problem is found, it can be immediately fed back to the operator for timely adjustment, avoiding the production of a large number of defective products. Each image acquisition and comparison data can be recorded by the computer to form a complete quality database. These data can not only be used for quality control of the current batch of products, but also provide reference and traceability for subsequent production.

[0036] (3) Fabrication of the pump casing: The cut steel plates are welded in different sizes to form the pump casing by relying on the welding of the steel plates. After the pump casing is welded, the welds need to be inspected. When inspecting the welds, a weld imager is used to collect weld images, and the collected weld images are transmitted and compared. In this way, the welding effect of the welds can be analyzed. By relying on calculation software, the weld stress can be calculated and processed to meet the requirements of weld strength. The weld imager can collect weld images with high resolution and clarity, capturing the fine details of the welds, including features such as the molten pool shape, bead distribution, and reinforcement height of the welds. After the collected weld images are transmitted to the computer, professional comparison software is used for analysis. The comparison software can accurately compare the actual weld images with the preset standard weld images, quickly and accurately detecting defects in the welds, such as pores, slag inclusions, incomplete penetration, cracks, etc. The image acquisition speed of the weld imager is fast, and it can complete the inspection of a large number of welds in a short time. The calculation software can also quickly process and analyze the collected images, and promptly give the inspection results and stress calculation results.

[0037] (4) The processed pump casing is subjected to subsequent treatment. During the subsequent treatment, the pump casing is placed in a pretreatment room for treatment. An enhanced coating is sprayed on the outer wall of the pump casing. The enhanced coating is a carbide coating or an alumina coating. An external coating is sprayed on the outer surface of the enhanced coating. The external coating is a titanium nitride coating. High-strength alloy steel plates and steel columns are used to make the pump casing and pump shaft, ensuring the durability and corrosion resistance of the pump. These high-quality materials not only improve the strength of the pump but also extend its service life. In addition, this patent also uses a surface imager and comparison software for processing inspection, ensuring the high precision and high quality of the parts. Through multiple image acquisitions and comparisons, as well as multi-stage processing, the steel column is processed into a qualified pump shaft, meeting the high-performance requirements of the pump.

[0038] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A self-balancing multi-stage pump and a processing method thereof, comprising a motor and a pump shaft, wherein the multi-stage pump is provided with a motor for transmission, a mounting position is provided on the motor, a pump shaft is mounted on the mounting position, and the pump shaft moves under the drive of the motor, characterized in that: The pump shaft is provided with an impeller, a mounting component is provided between the impeller and the pump shaft, the mounting component is a mounting boss, the impeller is inserted into the mounting boss, a locking screw is provided between the impeller and the mounting boss, a pump housing is provided outside the impeller, and an inlet and an outlet are provided on the pump housing; The inlet position is provided with an inlet guide plate, an inclination angle is provided between the inlet guide plate and the inlet wall, the inclination angle is 2-8°, the outlet position is provided with a graded outlet module, the graded outlet module adopts a control graded plate, control cross bars are provided on both sides of the outlet position, the control cross bar and the outlet position are assembled by threads, a control ball is provided on one side of the control cross bar, the control ball is recorded as a left control ball and a right control ball, the control cross bar is divided into a left cross bar and a right cross bar, a left control ball is provided on one side of the left cross bar, and a right control ball is provided on one side of the right cross bar; The grading outlet is provided with an assembly port, a control grading plate is provided in the assembly port, the control grading plate is provided with grooves, the grooves are symmetrically distributed on both sides of the control grading plate, the left control ball and the right control ball are in contact with the control grading plate respectively, and a position limiter is provided on the top of the control grading plate.

2. A self-balancing multistage pump and a processing method thereof according to claim 1, characterized in that: The position limiter is a small cylinder, a driving shaft is arranged on the small cylinder, a chuck is arranged on the driving shaft, a slot is arranged on the chuck, the slot clamps the control grading plate, an oil circuit is arranged on the top of the slot, an oil pipe is arranged on the oil circuit, an oil storage tank is arranged on the top of the oil pipe, and an electromagnetic control valve body is arranged between the oil storage tank and the oil pipe.

3. A self-balancing multistage pump and a processing method thereof according to claim 2, characterized in that: Support frames are arranged on both sides of the small cylinder, an adaptive assembly disk is arranged at the bottom of the support frame, the adaptive assembly disk is a square disk, an assembly hole is arranged in the middle of the steering wheel, the support frame is assembled in the assembly hole, side grooves are arranged on both sides of the square disk, and assembly screws are arranged in the side grooves.

4. A self-balancing multistage pump and a processing method thereof according to claim 2, characterized in that: A bottom mounting platform is provided at the bottom of the pump casing, a resting position is provided on the bottom mounting platform, the resting position rests the pump casing of the multi-stage pump, a base is provided on the bottom mounting platform, an adjustment component is provided between the bases, and the adjustment component is an adjustment screw.

5. A self-balancing multi-stage pump and a processing method thereof according to claim 4, characterized in that: A slide groove is arranged on the bottom mounting platform, a slider is arranged on the base, the slider is adapted in the slide groove on the bottom mounting platform, a threaded hole is arranged on the base, the threaded hole is equipped with an adjustment screw, an assembly head is arranged on the adjustment screw, a connecting end is arranged on the assembly head, and a small motor is assembled on the connecting end.

6. The processing method of a self-balancing multi-stage pump according to claim 1, characterized in that: The processing steps include: (1) Preparation of processing materials, which requires preparing a plurality of high-alloy steel plates and steel columns, and then cutting and preparing these steel plates according to drawings, placing these steel plates in different areas according to different types and usage places, and then cutting and storing the steel columns, pre-treating the steel columns, and spraying pre-treatment raw materials on the outer wall of the steel columns. The pre-treatment raw materials are pre-treatment stock solutions, and the pre-treatment stock solutions can be pre-treatment liquids composed of quartz sand, fine-grained steel sand, boric acid, and adhesives, and the pre-treatment liquids are brushed on the outer surface of the steel columns by manpower; (2) Preparation for machining: Clean the steel column after pretreatment. After cleaning, the steel column can be cut better. Place the steel column on a machining lathe for cutting, so that the steel column can be used as a pump shaft of a multi-stage pump. During the machining of the steel column, it takes a period of time to inspect the outer surface. During the inspection, a surface imager is used to collect surface patterns. The collected images are transmitted to a computer. The images of the outer surface of the steel column are compared with the comparison software in the computer. After the comparison, the steel column is processed. Multiple image collections and multi-stage processing are performed to make the steel column a qualified pump shaft. (3) The production of the pump casing. The cut steel plates are welded into different sizes and the pump casing is formed by welding the steel plates. After the pump casing is welded, the weld needs to be inspected. During the weld inspection, a weld imager is used to collect weld images. The collected weld images are transmitted and compared. In this way, the welding effect of the weld can be analyzed. The weld stress can be calculated and processed by the calculation software to meet the weld strength requirements. (4) The processed pump casing is subsequently processed, and the pump casing is placed in a pretreatment room for processing. A reinforcement coating is sprayed on the outer wall of the pump casing, and the reinforcement coating adopts a carbide coating or an aluminum oxide coating. The outer surface of the reinforcement coating is sprayed with an external coating, and the external coating is a titanium nitride coating.

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