Efficient energy-saving non-sealing self-control self-priming pump

Abstract

The invention discloses an efficient energy-saving sealing-free self-control self-priming pump, and relates to the technical field related to pumps, the efficient energy-saving sealing-free self-control self-priming pump comprises a pump shell, impellers and a rotating shaft are rotatably mounted in the pump shell, the outer side wall of the rotating shaft is fixedly connected with a plurality of impellers, the impellers can be bent, and a rotating mechanism and a control mechanism are mounted on the outer side wall of the rotating shaft; the rotating shaft rotates to guide liquid entering the pump shell through the impeller, the liquid drainage efficiency is remarkably improved, the bending angle of the blades is adjusted by arranging the rotating mechanism, operation of the rotating mechanism is controlled through the control mechanism, the flowing direction and the flowing speed of the liquid can be effectively adjusted by bending the blades, and the liquid drainage efficiency is improved. The problems that due to the fact that self-suction and liquid drainage of an existing non-sealing self-control self-suction pump completely depend on the action of an impeller, the phenomena that liquid conveying is uneven and local gas is detained are prone to occurring in the liquid drainage process, liquid possibly forms vortex or is detained in a pump cavity, consequently, part of liquid cannot be pushed to a liquid drainage pipe in time, and the liquid drainage efficiency is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of pump technology, specifically to a high-efficiency, energy-saving, seal-free, self-priming pump. Background Technology

[0002] Seal-less self-priming pumps are an innovative type of pump that combines seal-less design, self-priming function, and self-control technology. Their biggest advantage lies in their independence from traditional sealing devices, avoiding the leakage risks and frequent maintenance issues associated with mechanical seals, oil seals, or packing seals. This makes the pump more reliable and requires less maintenance during long-term operation. Self-priming is a key technology, enabling the pump to automatically draw in liquid upon startup without the need for additional filling or venting. Through special internal structures such as impeller design, volute shape, and fluid guiding devices, the pump can self-adjust in liquid-gas mixed environments, ensuring continuous liquid intake. This allows seal-less self-priming pumps to handle operating conditions with varying liquid levels or gas disturbances, avoiding the startup difficulties and cavitation problems of traditional pumps. The self-control function allows the pump to automatically adjust its operating parameters based on flow rate, pressure, and other operating conditions, without the need for external control system intervention. Through fluid pressure difference or differential pressure feedback mechanisms, the pump can automatically adjust flow rate or open / close valves, ensuring stable and efficient system operation. The combination of a seal-free design, strong self-priming capability, and automatic control function makes this pump widely used in chemical, petroleum, and food processing industries, and it is especially suitable for conveying gaseous liquids, high-viscosity media, or difficult-to-handle fluids.

[0003] While existing seal-less self-priming pumps rely on impellers and pump chamber structures for self-priming and discharge, they lack dedicated flow guiding mechanisms during liquid flow. This can lead to eddies or stagnation within the pump chamber, preventing some liquid from being promptly pushed to the discharge pipe and impacting discharge efficiency. Furthermore, because self-priming and discharge depend entirely on the impeller, uneven liquid delivery and localized gas retention are common during discharge. This slows down the discharge rate and reduces overall efficiency, particularly noticeable in high-viscosity or gas-containing liquid environments. To address these issues, a high-efficiency, energy-saving seal-less self-priming pump is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency, energy-saving, seal-free, self-priming pump to solve the problems mentioned in the background art. Existing seal-free, self-priming pumps rely entirely on the impeller for self-priming and discharge, which can easily lead to uneven liquid delivery and local gas retention during the discharge process. Furthermore, the liquid may form eddies or stagnate in the pump cavity, causing some liquid to not be pushed to the discharge pipe in time, thus affecting the discharge efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency, energy-saving, seal-free, self-priming pump, comprising a pump casing, an impeller and a shaft being rotatably mounted inside the pump casing, the impeller being fixedly connected to the lower end of the shaft, and multiple impellers being fixedly connected to the outer side wall of the shaft, and the impellers being bendable;

[0006] A rotating mechanism is installed on the outer wall of the shaft, which is used to adjust the bending angle of the impeller;

[0007] A control mechanism is also installed on the outer wall of the rotating shaft, which is used to control the operation of the rotating mechanism.

[0008] In a further embodiment, a motor is fixedly mounted on the upper end of the pump casing, and the upper end of the rotating shaft is fixedly connected to the output shaft of the motor, the motor being used to drive the rotating shaft to rotate.

[0009] In a further embodiment, an inlet pipe is fixedly connected to the outer wall of the pump casing, a solenoid valve is installed at the upper end of the inlet pipe, and a drain pipe is connected to the lower end of the inlet pipe.

[0010] In a further embodiment, a drain pipe is fixedly connected to the outer wall of the pump casing, and a one-way valve is fixedly installed at the upper end of the drain pipe.

[0011] In a further embodiment, the blade includes a fixed plate, a rotating plate, and reinforcing ribs. One end of the fixed plate is fixedly connected to the outer wall of the rotating shaft, and the rotating plate is rotatably connected to the other end of the fixed plate. Multiple reinforcing ribs are respectively fixedly connected to the end faces of the fixed plate and the rotating plate.

[0012] In a further embodiment, the rotating mechanism includes a mounting plate, a turntable, and a sliding rod. The mounting plate is fixedly sleeved on the outer wall of the rotating shaft, the turntable is rotatably sleeved on the outer wall of the rotating shaft, and the turntable is attached to the upper end of the mounting plate. The sliding rod is fixedly connected to the upper end of the reinforcing rib of the rotating plate.

[0013] In a further embodiment, a fixing plate is fixedly connected to the lower end of the mounting plate, the end face of the mounting plate is provided with multiple arc-shaped grooves, the end face of the turntable is provided with multiple sliding grooves, and the sliding rod is slidably inserted into the sliding grooves and arc-shaped grooves.

[0014] In a further embodiment, a limiting plate is fixedly connected to the upper end of the rotating plate, and a guide groove matching the limiting plate is provided at the lower end of the mounting plate.

[0015] In a further embodiment, the control mechanism includes a control tube, a sliding tube, and a dial ring. The control tube, the sliding tube, and the dial ring are all sleeved on the outer wall of the rotating shaft. The control tube is fixedly connected to the upper end of the turntable, and the dial ring is rotatably connected to the upper end of the sliding tube. The sliding tube is slidably inserted into the control tube.

[0016] In a further embodiment, a control groove is provided on the outer wall of the control tube, and a slider is fixedly connected to the outer wall of the sliding tube, and the slider is slidably installed in the control groove.

[0017] A limit groove is provided on the outer side wall of the rotating shaft, and a limit rod is fixedly connected inside the sliding tube. The limit rod is slidably installed in the limit groove. A threaded groove is provided on the outer side wall of the rotating shaft, and the dial ring is threadedly connected to the rotating shaft through the threaded groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The present invention is a high-efficiency and energy-saving seal-free self-priming pump. By setting multiple impellers on the outer wall of the rotating shaft, the rotating shaft guides the liquid entering the pump casing through the impellers, which can effectively push the liquid into the drain pipe, reduce liquid retention and gas accumulation, significantly improve the drainage efficiency, and avoid the instability of pump operation caused by liquid retention.

[0020] 2. By setting a rotating mechanism to adjust the bending angle of the blades, and controlling the operation of the rotating mechanism through a control mechanism, the bending of the blades can effectively adjust the direction and speed of liquid flow. Especially in the process of transporting high-viscosity liquids or liquids containing gas, bending the blades can break the original dead angle of flow, promote the separation of liquid and gas, and improve the discharge efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention.

[0022] Figure 2 This is a cross-sectional structural diagram of the pump casing, inlet pipe, and outlet pipe of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention.

[0023] Figure 3 This is a schematic diagram of the installation structure of the shaft, impeller, blades, rotating mechanism, and control mechanism of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention.

[0024] Figure 4 This is a schematic diagram of the overall structure of the impeller of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention;

[0025] Figure 5 This is a schematic diagram of the control mechanism structure of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention;

[0026] Figure 6 This is a top view schematic diagram of the rotating mechanism of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention;

[0027] Figure 7This is a bottom view schematic diagram of the rotating mechanism of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention;

[0028] Figure 8 This is a partially exploded schematic diagram of the control structure of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention.

[0029] Figure 9 This is a schematic diagram of the sliding tube structure of a high-efficiency, energy-saving, seal-free, self-priming pump proposed in this invention.

[0030] In the diagram: 1. Pump casing; 11. Motor; 2. Inlet pipe; 21. Solenoid valve; 22. Drain pipe; 3. Drain pipe; 31. Check valve; 4. Impeller; 41. Shaft; 411. Limiting groove; 412. Threaded groove; 5. Blade; 51. Fixed plate; 52. Rotating plate; 521. Limiting plate; 53. Reinforcing rib; 6. Rotating mechanism; 61. Mounting plate; 611. Arc groove; 612. Guide groove; 62. Turntable; 621. Slide groove; 63. Sliding rod; 7. Control mechanism; 71. Control tube; 711. Control groove; 72. Sliding tube; 721. Slider; 722. Limiting rod; 73. Dial ring. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-9 This embodiment provides a high-efficiency, energy-saving, seal-free, self-priming pump, including a pump casing 1. For example... Figure 1 and Figure 2 As shown, the sealless self-priming pump, reference model 250WFB-CD3, has an inlet pipe 2 fixedly connected to one side of the pump casing 1. Liquid enters the pump casing 1 through the inlet pipe 2. A solenoid valve 21 is fixedly connected to the upper end of the inlet pipe 2, automatically controlling the liquid flow to prevent backflow and dry running, ensuring smooth self-priming during pump startup. A drain pipe 22 is connected to the lower end of the inlet pipe 2, and the inlet pipe 2 and drain pipe 22 are interconnected. A cap is threadedly connected to the end of the drain pipe 22 to seal it. After the device stops operating, the drain pipe 22 can be opened through the cap to drain the accumulated liquid in the pump casing 1. A drain pipe 3 is fixedly connected to the other side of the pump casing 1, through which liquid is discharged from the pump casing 1. A one-way valve 31 is connected to the upper end of the drain pipe 3 to prevent liquid in the drain pipe 3 from flowing back into the pump casing 1.

[0033] Referring to the 250WFB-CD3 pump, an impeller 4 and a shaft 41 are rotatably mounted inside the pump casing 1. The shaft 41 is fixedly connected to the upper end of the impeller 4, and a motor 11 is fixedly connected to the upper end of the pump casing 1. The output shaft of the motor 11 is fixedly connected to the shaft 41. Starting the motor 11 drives the impeller 4 to rotate via the shaft 41. The rotating impeller 4 creates a negative pressure inside the pump casing 1, thereby achieving liquid intake and discharge, completing the self-priming process. The rotating impeller 4 interacts with the fluid inside the pump casing 1, generating rotational flow, forming radial flow and centrifugal force, thus driving the liquid to flow towards the drain pipe 3. During pump operation, the liquid is pushed by the impeller 4 towards the drain pipe 3 of the pump casing 1 and discharged from the pump through the one-way valve 31. The design of the impeller 4 helps to enhance the pump's self-priming capability, ensuring that the pump can quickly draw in and discharge liquid even at low liquid levels or during the initial stage of system startup.

[0034] like Figure 2 As shown, the pump casing 1 houses a blade 5, a rotating mechanism 6, and a control mechanism 7. Multiple blades 5 are arranged in a circular array and evenly connected to the outer wall of the rotating shaft 41. Figure 4 As shown, the blade 5 includes a fixed plate 51, a rotating plate 52, and reinforcing ribs 53. One end of the fixed plate 51 is fixedly connected to the outer wall of the rotating shaft 41, and the rotating plate 52 is rotatably connected to the other end of the fixed plate 51. Multiple reinforcing ribs 53 are respectively fixedly connected to the end faces of the fixed plate 51 and the rotating plate 52. The reinforcing ribs 53 are used to increase the structural strength of the fixed plate 51 and the rotating plate 52 to withstand the impact of the water flow.

[0035] like Figure 6 As shown, the rotating mechanism 6 includes a mounting plate 61, a turntable 62, and a sliding rod 63. The mounting plate 61 is fixedly sleeved on the outer wall of the rotating shaft 41. The turntable 62 is rotatably sleeved on the outer wall of the rotating shaft 41, and the turntable 62 is attached to the upper end of the mounting plate 61. The sliding rod 63 is fixedly connected to the upper end of the reinforcing rib 53 located on the rotating plate 52.

[0036] Among them, such as Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the fixing plate 51 and the reinforcing ribs 53 on the fixing plate 51 are fixedly connected to the lower end of the mounting plate 61. The end face of the mounting plate 61 has multiple arc-shaped grooves 611, and the end face of the turntable 62 has multiple sliding grooves 621. The sliding grooves 621 and the arc-shaped grooves 611 are interconnected, and the sliding rod 63 is slidably inserted into the sliding grooves 621 and the arc-shaped grooves 611. After rotating the turntable 62, the sliding rod 63 slides within the arc-shaped grooves 611 via the sliding grooves 621, thereby causing the rotating plate 52 to rotate. The coordinated design of the arc-shaped grooves 611 and the sliding grooves 621 improves the accuracy and stability of the rotating plate 52, ensuring that the blade 5 can smoothly and effectively adjust its angle and optimize liquid flow.

[0037] like Figure 4 and Figure 7 As shown, a limiting plate 521 is fixedly connected to the upper end of the rotating plate 52, and a guide groove 612 is provided at the lower end of the mounting plate 61. The limiting plate 521 is slidably installed in the guide groove 612, limiting the rotating plate 52 and preventing it from tilting, thus maintaining the rotating plate 52 perpendicular to the ground. This design greatly improves the working stability of the rotating plate 52, enabling it to maintain balance under various liquid conditions and ensuring the continuous and efficient operation of the self-priming pump.

[0038] like Figure 5 As shown, the control mechanism 7 includes a control tube 71, a sliding tube 72, and a deflector ring 73. All three are sleeved on the outer wall of the rotating shaft 41. The control tube 71 is fixedly connected to the upper end of the turntable 62, and the deflector ring 73 is rotatably connected to the upper end of the sliding tube 72, with the sliding tube 72 slidably inserted into the control tube 71. The design of the control mechanism 7 ensures that the angle adjustment of the blade 5 can be performed precisely and smoothly.

[0039] The control tube 71 has a control groove 711 on its outer side wall, and a slider 721 is fixedly connected to the outer side wall of the sliding tube 72, with the slider 721 slidably installed within the control groove 711. The rotating shaft 41 has a limit groove 411 on its outer side wall, and a limit rod 722 is fixedly connected inside the sliding tube 72. The limit rod 722 is slidably installed within the limit groove 411. By sliding within the limit groove 411, the limit rod 72 is positioned to prevent rotation on the outer side wall of the rotating shaft 41.

[0040] The outer wall of the rotating shaft 41 is provided with a threaded groove 412. The dial ring 73 is threadedly connected to the rotating shaft 41 through the threaded groove 412. Rotating the dial ring 73 through the threaded groove 412 can drive the sliding tube 72 to slide on the outer wall of the rotating shaft 41.

[0041] After the rotating shaft 41 rotates, the inertia generated by the rotation can easily cause the shift ring 73 to rotate. To prevent the shift ring 73 from rotating with the rotating shaft 41, the shift ring 73 and the threaded groove 412 of the rotating shaft 41 form a certain damping force. The damping force is greater than the centrifugal force generated by the rotating shaft 41, and the frictional force prevents the shift ring 73 from rotating with the rotating shaft 41. This design can effectively overcome the influence of the inertial force generated by the rotation of the rotating shaft 41 on the shift ring 73, ensure the accuracy and stability of the adjustment device, avoid unnecessary vibration and wear, and at the same time prevent the rotating plate 52 from rotating during the operation of the device.

[0042] Control slot 711, for example Figure 5 As shown, the rotating ring 73 drives the sliding tube 72 to slide downwards, and then the slider 721 slides within the control groove 711, causing the sliding tube 72 to rotate synchronously during its downward movement. The rotation angle of the sliding tube 72 is less than or equal to 90 degrees, meaning the rotation angle of the rotating plate 52 is less than or equal to 90 degrees. The rotation of the rotating plate 52 causes the impeller 5 to bend. Precise adjustment of the bending angle ensures that the impeller 5 can achieve optimal hydrodynamic performance under different working conditions, thereby improving the pump's efficiency and reliability.

[0043] The bent impeller 5 can better absorb and disperse the impact force in liquid flow. Liquids may contain large solid particles or areas with large velocity changes, all of which can impact the impeller 5. The bent design reduces the impact of water flow on the impeller 5, thereby increasing the pump's durability and service life. During long-term operation, the bent impeller 5 effectively distributes the load, reducing the possibility of structural damage to the self-priming pump when subjected to high flow rates or sudden loads.

[0044] The bending angle of the impeller 5 can be adjusted via the rotating mechanism 6 and the control mechanism 7. The angle of the rotating plate 52 can be adjusted according to the liquid flow rate, pressure, and physical properties of the fluid. This means that under different operating conditions (such as changes in flow rate and liquid viscosity), the impeller 5 can optimize its operating angle to adapt to the changing fluid environment, thereby ensuring that the pump always maintains optimal hydrodynamic performance. Specifically, at lower flow rates, the angle of the rotating plate 52 is increased; at its maximum angle, the rotating plates 52 are arranged in a straight line. Increasing the angle of the rotating plates 52 increases the driving force of the liquid, enhancing the pump's suction capacity. At higher flow rates, the angle of the rotating plate 52 is decreased; at its minimum angle, the rotating plates 52 are vertically distributed. Decreasing the angle of the rotating plates 52 reduces fluid resistance, avoiding excessive energy consumption and vibration. In summary, the adjustable angle design of the rotating plate 52 allows the pump to better adapt to different types of liquids and various complex operating conditions, improving the adaptability and flexibility of the self-priming pump.

[0045] In traditional seal-less self-priming pumps, although their structure is simple and they do not require additional sealing devices, the discharge efficiency is often low due to fluid retention and gas accumulation within the pump body, especially in environments with high-viscosity or gas-containing liquids. When handling such liquids, conventional self-priming pumps struggle to allow effective liquid flow within the pump chamber, leading to liquid retention and poor discharge, thus affecting the pump's efficiency and stability. In contrast, the impeller 5 design in this embodiment effectively overcomes this problem, significantly improving the pump's discharge efficiency, especially when handling high-viscosity or gas-containing liquids, greatly reducing liquid retention and gas accumulation, and enhancing the pump's operational stability.

[0046] Advantage 1: Improved liquid flow and drainage efficiency.

[0047] Traditional self-priming pumps often face the problem of liquid retention, especially during the drainage process, where liquid is not completely discharged from the pump chamber, leading to low drainage efficiency and gas accumulation. This design flaw causes unstable pump operation and may even cause mechanical damage. The rotation of the impeller 5 guides the liquid flow to the inner wall of the pump casing 1, thereby optimizing the liquid flow inside the pump body. After being more effectively guided within the pump chamber, the liquid can flow more smoothly to the drain pipe 3, reducing liquid retention.

[0048] The design of blade 5 has the following advantages:

[0049] Optimize fluid flow direction: The rotation of the impeller 5 guides the liquid to flow towards the inner wall of the pump casing 1, avoiding stagnation and dead flow of the liquid in the pump cavity, thereby improving the discharge efficiency.

[0050] Reduce gas accumulation: By rationally designing the blade angle and rotation mode, gas can be discharged in time, avoiding gas accumulation in the pump chamber, which is especially important when handling gas-containing liquids.

[0051] Effectively propelling liquid into the drain pipe: The rotation of blade 5 not only accelerates the flow of liquid, but also reduces the time that liquid remains stagnant in the pump body, ensuring that the pump can complete the draining process quickly and efficiently.

[0052] This structural design enables the pump to efficiently discharge liquid, significantly increasing the discharge rate and reducing operational instability caused by liquid stagnation. Especially when handling high-viscosity and gas-containing liquids, the pump in this embodiment overcomes the limitations of traditional pump designs, adapts to complex liquid environments, and improves discharge efficiency.

[0053] Advantage 2: Improved gas-liquid separation efficiency:

[0054] In many liquid transport systems, especially in the pumping of gaseous or high-viscosity liquids, the efficiency of gas-liquid separation is a crucial factor affecting pump performance. Traditional self-priming pump designs often fail to effectively address this issue, leading to gas retention within the pump chamber. This impairs the pump's self-priming capability and drainage performance, and may even cause cavitation, damaging the pump body. In this embodiment, the impeller 5 design, however, adjusts the fluid flow direction, allowing gas to be discharged promptly and preventing gas accumulation within the pump chamber.

[0055] Optimized gas-liquid separation: The rotating design of impeller 5 alters the fluid flow path, guiding the liquid to the appropriate location while ensuring smooth gas discharge from the pump body, significantly improving gas-liquid separation efficiency. Timely gas discharge is crucial for preventing cavitation.

[0056] Reducing cavitation: When the liquid contains gas, the gas in the pump chamber can cause cavitation, which not only affects pump efficiency but can also cause serious damage to pump components. By optimizing the rotation mode of impeller 5 and fluid guidance, gas can be effectively discharged, avoiding gas stagnation, thereby reducing cavitation and ensuring stable pump operation.

[0057] Adaptable to complex liquid environments: The design of the impeller 5 in this embodiment can effectively improve the pump's separation efficiency in different types of liquids (including gas-liquid mixtures), enabling the pump to adapt to more complex working environments. Even in high-viscosity liquids or liquids containing bubbles, the pump can still operate stably and efficiently, avoiding the gas accumulation and cavitation problems in traditional pump designs.

[0058] Through the optimized design of blade 5, the gas-liquid separation efficiency has been significantly improved, which enables the self-priming pump of this embodiment to provide reliable performance under more diverse working conditions, reduce maintenance and failure rate, and extend the service life of the pump.

[0059] Advantage 3: Improved self-priming capability and shorter start-up time:

[0060] Traditional self-priming pumps typically rely on the rotation of the impeller 4 and the interaction between the internal structure of the pump casing 1 to achieve self-priming. However, during initial startup or when the liquid level is low, traditional self-priming pumps often cannot provide sufficient self-priming power, resulting in a slow startup process or even dry running. In this embodiment, the impeller 5 guides the liquid flow, helping to draw in liquid more quickly and significantly improving the pump's self-priming capability, especially when the liquid level is low.

[0061] Improved start-up speed: The rotation of impeller 5 accelerates liquid flow, thereby quickly creating negative pressure and enhancing the pump's self-priming capability. Compared to traditional pumps, the impeller 5 design significantly shortens the self-priming time, ensuring the pump can start up and begin normal operation in a short time.

[0062] To prevent dry running: During startup, traditional self-priming pumps may run dry due to low liquid levels or insufficient liquid in the pump chamber, leading to pump damage. The impeller 5 effectively guides liquid flow, ensuring smooth entry into the pump chamber and providing sufficient lubrication, thus preventing dry running.

[0063] Enhanced self-priming capability: With the guidance of impeller 5, the pump can complete the self-priming process in a shorter time, especially when the liquid level is low. It can quickly draw in liquid, build up sufficient suction, and ensure that the pump can operate smoothly.

[0064] Through this innovative design, the self-priming pump in this embodiment can quickly establish negative pressure upon initial startup, significantly improving the startup speed and avoiding dry running due to low liquid level or insufficient liquid in the pump chamber.

[0065] Advantage 4: Comprehensive performance optimization and extended service life:

[0066] In addition to improving drainage efficiency, gas-liquid separation efficiency, and self-priming capability, the impeller 5 design in this embodiment optimizes the overall performance of the pump in several aspects, extending its service life. Through improvements in guiding fluid flow, reducing liquid retention, and increasing gas-liquid separation efficiency, the pump operates more stably and can work efficiently under a wider range of operating conditions.

[0067] Improved durability: The structural design of blade 5 increases the pump's durability, especially in environments with high-viscosity liquids and gas-containing liquids. Blade 5 can better cope with complex operating conditions and reduce damage caused by liquid retention or gas accumulation (liquid retention and gas accumulation can lead to decreased pump efficiency, cavitation, wear, blockage, vibration and overheating).

[0068] Reduced failure rate: By optimizing gas-liquid separation and fluid guidance design, the pump can maintain efficient and stable operation for a longer period of time, reducing failures and maintenance needs caused by unstable operation.

[0069] Extended pump lifespan: The pump's performance stability and high efficiency reduce excessive wear and corrosion problems, extending the pump's lifespan and lowering operating and maintenance costs.

[0070] In summary, the design of the bendable impeller 5 in this embodiment significantly improves the discharge efficiency of the self-priming pump in complex liquid environments by guiding liquid flow, enhancing gas-liquid separation efficiency, and strengthening self-priming capability. This solves the problems of traditional self-priming pumps in handling high-viscosity, gas-containing, or particulate liquids. This design not only improves the pump's operational stability but also extends its service life, reduces failures and maintenance costs, and offers significant economic and technical advantages.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency, energy-saving, seal-free, self-priming pump, comprising a pump casing (1), wherein an impeller (4) and a rotating shaft (41) are rotatably mounted inside the pump casing (1), and the impeller (4) is fixedly connected to the lower end of the rotating shaft (41), characterized in that: Multiple blades (5) are fixedly connected to the outer wall of the rotating shaft (41), and the blades (5) can be bent. A rotating mechanism (6) is installed on the outer wall of the rotating shaft (41), which is used to adjust the bending angle of the blade (5). The outer wall of the rotating shaft (41) is also equipped with a control mechanism (7), which is used to control the operation of the rotating mechanism (6).

2. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 1, characterized in that: The upper end of the pump casing (1) is fixedly mounted with a motor (11), and the upper end of the rotating shaft (41) is fixedly connected to the output shaft of the motor (11). The motor (11) is used to drive the rotating shaft (41) to rotate.

3. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 2, characterized in that: The outer wall of the pump casing (1) is fixedly connected to a water inlet pipe (2), the upper end of the water inlet pipe (2) is equipped with a solenoid valve (21), and the lower end of the water inlet pipe (2) is connected to a drain pipe (22).

4. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 3, characterized in that: A drain pipe (3) is fixedly connected to the outer wall of the pump casing (1), and a one-way valve (31) is fixedly installed at the upper end of the drain pipe (3).

5. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 4, characterized in that: The blade (5) includes a fixed plate (51), a rotating plate (52) and reinforcing ribs (53). One end of the fixed plate (51) is fixedly connected to the outer wall of the rotating shaft (41), and the rotating plate (52) is rotatably connected to the other end of the fixed plate (51). A plurality of reinforcing ribs (53) are respectively fixedly connected to the end faces of the fixed plate (51) and the rotating plate (52).

6. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 5, characterized in that: The rotating mechanism (6) includes a mounting plate (61), a turntable (62), and a sliding rod (63). The mounting plate (61) is fixedly sleeved on the outer wall of the rotating shaft (41). The turntable (62) is rotatably sleeved on the outer wall of the rotating shaft (41) and the turntable (62) is attached to the upper end of the mounting plate (61). The sliding rod (63) is fixedly connected to the upper end of the reinforcing rib (53) of the rotating plate (52).

7. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 6, characterized in that: The fixing plate (51) is fixedly connected to the lower end of the mounting plate (61). The end face of the mounting plate (61) is provided with multiple arc grooves (611), and the end face of the turntable (62) is provided with multiple sliding grooves (621). The sliding rod (63) is slidably inserted into the arc grooves (611) and the sliding grooves (621).

8. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 7, characterized in that: The upper end of the rotating plate (52) is fixedly connected to a limiting plate (521), and the lower end of the mounting plate (61) is provided with a guide groove (612) that matches the limiting plate (521).

9. The high-efficiency, energy-saving, seal-free, self-priming pump according to claim 7, characterized in that: The control mechanism (7) includes a control tube (71), a sliding tube (72), and a dial ring (73). The control tube (71), the sliding tube (72), and the dial ring (73) are all sleeved on the outer wall of the rotating shaft (41). The control tube (71) is fixedly connected to the upper end of the turntable (62). The dial ring (73) is rotatably connected to the upper end of the sliding tube (72), and the sliding tube (72) is slidably inserted into the control tube (71).

10. A high-efficiency, energy-saving, seal-free, self-priming pump according to claim 9, characterized in that: The outer wall of the control tube (71) is provided with a control groove (711), and the outer wall of the sliding tube (72) is fixedly connected with a slider (721), and the slider (721) is slidably installed in the control groove (711). The outer side wall of the rotating shaft (41) has a limiting groove (411), and the sliding tube (72) is fixedly connected to a limiting rod (722). The limiting rod (722) is slidably installed in the limiting groove (411). The outer side wall of the rotating shaft (41) has a threaded groove (412), and the dial ring (73) is threadedly connected to the rotating shaft (41) through the threaded groove (412).

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