A long-shaft submersible pump with high stability

Abstract

This invention relates to the field of long-shaft submersible pump technology, and discloses a long-shaft submersible pump with high stability, comprising: a drive motor, a mounting plate fixedly connected to the lower end of the drive motor, a driven mechanism fixedly connected to the output end of the drive motor, a stabilizing mechanism provided at the lower end of the driven mechanism, a flow guiding mechanism connected below the stabilizing mechanism, a liquid outlet pipe provided on one side of the flow guiding mechanism, the liquid outlet pipe being detachably connected to the flow guiding mechanism, and a filter plate provided between the liquid outlet pipe and the flow guiding mechanism. This application improves the stability of the submersible pump and reduces wear and vibration.

Description

Technical Field

[0001] This invention relates to the field of long-shaft submersible pump technology, and in particular to a long-shaft submersible pump with high stability. Background Technology

[0002] Long-shaft submersible pumps, also known as vertical long-shaft pumps, deep well pumps (specifically for groundwater extraction), or submersible vertical pumps, are a specially designed vertical centrifugal pump. Their most significant structural feature is a drive shaft that is significantly longer than that of conventional pumps. This shaft vertically transmits the power from the prime mover (usually an electric motor) located above the liquid surface to the impeller assembly submerged below the liquid surface. They are primarily used for pumping groundwater, industrial wastewater, and chemical liquids.

[0003] Long-shaft submersible pumps are characterized by drive shafts that are significantly longer than those of conventional pumps. However, shaft systems with excessively high length-to-diameter ratios (length / diameter) are like "cantilever beams," prone to bending deformation under high-speed rotation. When the rotational speed approaches the system's natural frequency (critical speed), resonance is triggered, leading to an exponential amplification of the amplitude. Furthermore, the radial runout of the long shaft continuously impacts the top shaft seal (mechanical seal / packing seal), causing uneven wear and leakage on the sealing surface. After seal failure, foreign matter intrusion further exacerbates the vibration. Summary of the Invention

[0004] The purpose of this invention is to provide a long-shaft submersible pump with high stability to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a long-shaft submersible pump with high stability, comprising:

[0006] A drive motor is provided, with a mounting plate fixedly connected to its lower end. A driven mechanism is fixedly connected to the output end of the drive motor. A stabilizing mechanism is provided at the lower end of the driven mechanism. A flow guiding mechanism is connected below the stabilizing mechanism. A liquid outlet pipe is provided on one side of the flow guiding mechanism. The liquid outlet pipe is detachably connected to the flow guiding mechanism. A filter plate is provided between the liquid outlet pipe and the flow guiding mechanism.

[0007] Furthermore, the driven mechanism includes a coupling, a motor base, a first drive shaft, a vertical barrel, and a vibration stabilizing component. The two ends of the motor base are respectively fixedly connected to the drive motor and the mounting plate. A coupling is provided inside the motor base. The first drive shaft is connected to the output end of the drive motor through the coupling. The vertical barrel is located at the lower end of the mounting plate and extends through the flow guiding mechanism. The lower part of the first drive shaft is located inside the vertical barrel and connected to the stabilizing mechanism. The vibration stabilizing component is fixedly connected to the outer wall of the vertical barrel.

[0008] Furthermore, the anti-shake component includes an anti-shake ring, a reinforcing member, an anti-shake element, and a damping assembly. Several anti-shake elements are provided, with both ends of each element fixedly connected to the mounting plate and the flow guiding mechanism, respectively. One end of the anti-shake ring is fixedly connected to the several anti-shake elements, and the other end is fixedly connected to the outer wall of the outlet pipe. A reinforcing member is provided on the anti-shake ring, and the reinforcing member is fixedly connected to the anti-shake ring by bolts. The vertical barrel is located at the axis of the anti-shake ring, and the vertical barrel is fixedly connected to the anti-shake ring via the damping assembly.

[0009] Furthermore, the damping assembly includes a damping arm, a torsion spring, a damping shell, and a damping claw. The damping claw is fixedly connected to the outer wall of the vertical barrel. A damping shell is fixedly connected between the damping claw and the anti-shake ring. The damping arm is fixedly connected inside the damping shell, and a torsion spring is sleeved on the damping arm.

[0010] Furthermore, the stabilizing mechanism includes a stabilizing plate, a driven planetary gear, a synchronizing pulley, a gear train ring, a driving planetary gear, a coupling arm, a first sun gear, and an anti-blocking component. The gear train ring is fixedly connected to the inner wall of the vertical barrel. A plurality of driven planetary gears mesh with the inner wall of the gear train ring. The first driving shaft is located at the axis of the gear train ring. A plurality of coupling arms are provided, and the coupling arms are fixedly connected to the first driving shaft. The other end of the coupling arm is fixedly connected to the driven planetary gear. A synchronizing pulley is fixedly connected below the driven planetary gear. A driving planetary gear is provided below the coupling arm. The driving planetary gear is fixedly connected to the first driving shaft and meshes with the synchronizing pulley. A first sun gear is also provided on the first driving shaft. The first sun gear is located below the synchronizing pulley and meshes with the anti-blocking component. A plurality of stabilizing plates are provided, and the plurality of stabilizing plates are respectively located above the coupling arm, below the synchronizing pulley, and below the first sun gear.

[0011] Furthermore, the anti-clogging component includes a filter plate, a driven shaft, a synchronizing pinion, and an anti-clogging impeller. The synchronizing pinion is fixedly connected to the driven shaft and meshes with the first sun gear. The anti-clogging impeller is fixedly connected to the lower end of the driven shaft and is located on one side of the filter plate.

[0012] Furthermore, the stabilizing mechanism also includes a second sun gear and a second drive shaft. The second sun gear is fixedly connected to the second drive shaft and meshes with the first sun gear. The second drive shaft is fixedly connected to the flow guiding mechanism.

[0013] Furthermore, the flow guiding mechanism includes a centrifugal impeller and a hub. One side of the hub is fixedly connected to the second drive shaft, and the other side of the hub is fixedly connected to the centrifugal impeller. The centrifugal impeller is arranged to rotate outward along the axis of the hub.

[0014] This invention discloses the following technical effects: By fixing a mounting plate to the lower end of the drive motor, the installation stability of the drive motor is improved, and the rigidity of the overall structure is enhanced, thereby reducing vibration and noise during operation and improving the service life and reliability of the equipment. The fixing method of the mounting plate also simplifies the installation and disassembly process, facilitates maintenance and repair, and reduces maintenance costs and difficulty. Secondly, a driven mechanism is fixedly connected to the output end of the drive motor, reducing energy loss during transmission and improving transmission efficiency. The driven mechanism optimizes the power transmission path, making the pump run more smoothly, reducing mechanical wear, and improving the operating efficiency and reliability of the equipment. At the same time, a stabilizing mechanism is set at the lower end of the driven mechanism, further enhancing the stability of the structure and preventing loosening or displacement due to long-term operation, ensuring the long-term stable operation of the pump. A flow guiding mechanism is connected below the stabilizing mechanism, which optimizes the liquid flow path, reduces flow resistance and turbulence, and improves the liquid delivery efficiency. A liquid outlet pipe is located on one side of the flow guiding mechanism. The outlet pipe is detachably connected to the flow guiding mechanism, facilitating the replacement and cleaning of the outlet pipe, reducing downtime caused by blockages or contamination, and improving equipment availability and maintenance convenience. Simultaneously, a filter plate is installed between the outlet pipe and the flow guiding mechanism. This filter plate intercepts impurities and particles in the liquid, preventing them from entering the interior of the outlet pipe, protecting its internal structure, and extending the equipment's service life. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 A schematic diagram of a long-shaft submersible pump with high stability provided in an embodiment of the present invention;

[0017] Figure 2 A side view of the anti-vibration component in a long-shaft submersible pump with high stability provided in an embodiment of the present invention;

[0018] Figure 3 A cross-sectional view of the damping housing in a long-shaft submersible pump with high stability provided in an embodiment of the present invention;

[0019] Figure 4 A side view of the stabilizing mechanism in a long-shaft submersible pump with high stability provided in an embodiment of the present invention;

[0020] Figure 5 A side view of the stabilizing mechanism in the long-shaft submersible pump with high stability provided in the embodiments of the present invention, without the stabilizing plate.

[0021] In the diagram: 1. Drive motor; 2. Mounting plate; 3. Driven mechanism; 301. Coupling; 302. Motor base; 303. First drive shaft; 304. Vertical tank; 305. Anti-vibration component; 3051. Anti-vibration ring; 3052. Reinforcing component; 3053. Anti-vibration component; 3054. Damping arm; 3055. Torsion spring; 3056. Damping housing; 3057. Damping claw; 4. Discharge pipe; 5. Flow guide. Mechanism; 501, centrifugal impeller; 502, hub; 7, stabilizing mechanism; 701, stabilizing plate; 702, driven planetary gear; 703, synchronous pulley; 704, gear train ring gear; 705, driving planetary gear; 706, coupling arm; 707, first sun gear; 708, driven shaft; 709, synchronous pinion; 710, anti-clogging impeller; 711, second sun gear; 712, second drive shaft. Detailed Implementation

[0022] The following will clearly and completely describe 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.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] In some embodiments of this application, see Figure 1 As shown, a long-shaft submersible pump with high stability includes:

[0026] A drive motor 1 is provided, and a mounting plate 2 is fixedly connected to the lower end of the drive motor 1. A driven mechanism 3 is fixedly connected to the output end of the drive motor 1. A stabilizing mechanism 7 is provided at the lower end of the driven mechanism 3. A flow guiding mechanism 5 is connected below the stabilizing mechanism 7. A liquid outlet pipe 4 is provided on one side of the flow guiding mechanism 5. The liquid outlet pipe 4 and the flow guiding mechanism 5 are detachably connected. A filter plate is provided between the liquid outlet pipe 4 and the flow guiding mechanism 5.

[0027] Specifically, the lower end of the drive motor 1 is fixedly connected to the mounting plate 2, which is located above the liquid surface. Below the liquid surface, the driven mechanism 3 connects to the stabilizing mechanism 7, thereby changing the head of the long-shaft submersible pump. Furthermore, the stabilizing mechanism 7 can prevent noise or wear caused by the excessive length of the drive shaft. The stabilizing mechanism 7 is connected to the flow guiding mechanism 5. When the drive motor 1 drives the driven mechanism 3 to rotate, the driven mechanism 3 drives the stabilizing mechanism 7 to rotate, which in turn drives the flow guiding mechanism 5 to rotate. This allows the liquid to enter the outlet pipe 4 through centrifugal force. A filter plate is installed between the flow guiding mechanism 5 and the outlet pipe 4 to filter impurities in the liquid, making the liquid output by the long-shaft submersible pump purer.

[0028] Understandably, the lower end of the drive motor 1 is fixedly connected to the mounting plate 2, which is located above the liquid surface. This not only improves the installation stability of the drive motor 1 but also enhances the rigidity of the overall structure, thereby reducing vibration and noise during operation and improving the service life and reliability of the equipment. The fixed connection method of the mounting plate 2 also simplifies the installation and disassembly process, facilitates maintenance and repair, and reduces maintenance costs and difficulties. Secondly, the output end of the drive motor 1 is fixedly connected to the driven mechanism 3, which is located below the liquid surface and connected to the flow guiding mechanism 5 through the stabilizing mechanism 7. This optimizes the power transmission path, making the pump run more smoothly, reducing mechanical wear, and improving the operating efficiency and reliability of the equipment. The design of the stabilizing mechanism 7 not only changes the head of the long-shaft submersible pump but also prevents noise or wear caused by an excessively long drive shaft, further enhancing the stability and durability of the equipment. Through the connection between the stabilizing mechanism 7 and the flow guiding mechanism 5, when the drive motor 1 drives the driven mechanism 3 to rotate, the driven mechanism 3 drives the stabilizing mechanism 7 to rotate, which in turn drives the flow guiding mechanism 5 to rotate, realizing the process of using centrifugal force to drive the liquid into the outlet pipe 4. The optimized liquid flow path reduces flow resistance and turbulence, improving liquid delivery efficiency. A liquid outlet pipe 4 is located on one side of the flow guiding mechanism 5, and the outlet pipe 4 is detachably connected to the flow guiding mechanism 5, facilitating replacement and cleaning of the outlet pipe 4, reducing downtime due to blockage or contamination, and improving equipment availability and maintenance convenience. Simultaneously, a filter plate is installed between the outlet pipe 4 and the flow guiding mechanism 5. The filter plate intercepts impurities and particles in the liquid, preventing them from entering the pump body, protecting the pump's internal structure, and extending the equipment's service life. The filter plate also improves liquid purity, reducing pipe blockage and wear caused by impurities, lowering maintenance frequency and costs. The detachable design of the filter plate also facilitates cleaning and replacement, further improving equipment maintenance convenience and operational efficiency.

[0029] In some embodiments of this application, the driven mechanism 3 includes a coupling 301, a motor base 302, a first drive shaft 303, a vertical barrel 304, and a shock-absorbing component 305. The two ends of the motor base 302 are respectively fixedly connected to the drive motor 1 and the mounting plate 2. The coupling 301 is provided inside the motor base 302. The first drive shaft 303 is connected to the output end of the drive motor 1 through the coupling 301. The vertical barrel 304 is located at the lower end of the mounting plate 2 and extends through the flow guiding mechanism 5. The lower part of the first drive shaft 303 is located inside the vertical barrel 304 and connected to the stabilizing mechanism 7. The shock-absorbing component 305 is fixedly connected to the outer wall of the vertical barrel 304.

[0030] In some embodiments of this application, see Figure 2As shown, the anti-shake component 305 includes an anti-shake ring 3051, a reinforcing member 3052, an anti-shake component 3053, and a damping assembly. Several anti-shake components 3053 are provided, and their two ends are fixedly connected to the mounting plate 2 and the flow guiding mechanism 5, respectively. One end of the anti-shake ring 3051 is fixedly connected to several anti-shake components 3053, and the other end of the anti-shake ring 3051 is fixedly connected to the outer wall of the liquid outlet pipe 4. A reinforcing member 3052 is provided on the anti-shake ring 3051, and the reinforcing member 3052 is fixedly connected to the anti-shake ring 3051 by bolts. The vertical barrel 304 is located at the axis of the anti-shake ring 3051, and the vertical barrel 304 is fixedly connected to the anti-shake ring 3051 by the damping assembly.

[0031] Specifically, the vertical barrel 304 is fixedly connected to the mounting plate 2 and is hollow inside. The first drive shaft 303 is connected to the output end of the drive motor 1 and then passes through the vertical barrel 304 to the stabilizing mechanism 7. The outer wall of the vertical barrel 304 is fixedly connected to the anti-vibration ring 3051 through the damping component. The other end of the anti-vibration ring 3051 is fixed to the liquid outlet pipe 4. The anti-vibration ring 3051 is provided with a reinforcing member 3052 to improve its energy absorption effect and further offset the shaking wear or noise caused by the long shaft.

[0032] Understandably, the driven mechanism 3 includes a coupling 301, a motor base 302, a first drive shaft 303, a vertical drum 304, and a vibration damping component 305, optimizing the power transmission path and improving the transmission efficiency and operational stability of the equipment. The two ends of the motor base 302 are fixedly connected to the drive motor 1 and the mounting plate 2, respectively, which not only enhances the rigidity of the overall structure but also improves the installation stability of the drive motor 1, reduces vibration and noise during operation, and extends the service life of the equipment. The coupling 301 is located inside the motor base 302, and the first drive shaft 303 is connected to the output end of the drive motor 1 through the coupling 301, reducing energy loss during transmission and improving transmission efficiency. The lower part of the first drive shaft 303 is located inside the vertical drum 304 and connected to the stabilizing mechanism 7. The vertical drum 304 extends through the flow guiding mechanism 5, optimizing the power transmission path, making the pump run more smoothly, reducing mechanical wear, and improving the operating efficiency and reliability of the equipment. The vertical barrel 304 is fixedly connected to the mounting plate 2. Its hollow interior not only enhances the overall stability of the equipment but also reduces vibration and noise caused by the excessive length of the drive shaft. The anti-vibration component 305 includes an anti-vibration ring 3051, a reinforcing member 3052, anti-vibration components 3053, and a damping assembly, further improving the stability and vibration resistance of the equipment. Several anti-vibration components 3053 are provided, with both ends fixedly connected to the mounting plate 2 and the flow guiding mechanism 5, respectively, enhancing the overall rigidity of the equipment, reducing swaying and vibration during operation, and improving the smoothness and service life of the equipment. One end of the anti-vibration ring 3051 is fixedly connected to several anti-vibration components 3053, and the other end is fixedly connected to the outer wall of the liquid outlet pipe 4, optimizing the fixing method of the liquid outlet pipe 4 and reducing vibration and noise caused by liquid flow. A reinforcing member 3052 is installed on the anti-vibration ring 3051. The reinforcing member 3052 is fixedly connected to the anti-vibration ring 3051 by bolts, which improves the energy absorption effect of the anti-vibration ring 3051 and further offsets the shaking, wear, or noise caused by the long shaft, thereby improving the operational stability and environmental friendliness of the equipment. The vertical barrel 304 is located at the axis of the anti-vibration ring 3051 and is fixedly connected to the anti-vibration ring 3051 through a damping component. This optimizes the fixing method of the vertical barrel 304, reduces vibration and noise during operation, and improves the overall performance and reliability of the equipment.

[0033] In some embodiments of this application, see Figure 3 As shown, the damping assembly includes a damping arm 3054, a torsion spring 3055, a damping shell 3056, and a damping claw 3057. The damping claw 3057 is fixedly connected to the outer wall of the vertical barrel 304. The damping shell 3056 is fixedly connected between the damping claw 3057 and the anti-shake ring 3051. The damping arm 3054 is fixedly connected inside the damping shell 3056. The torsion spring 3055 is sleeved on the damping arm 3054.

[0034] Understandably, the damping claw 3057 is fixedly connected to the outer arm of the vertical barrel 304, enhancing the connection strength between the vertical barrel 304 and the damping assembly, reducing loosening or displacement caused by vibration during operation, and improving the overall stability and service life of the equipment. A damping shell 3056 is fixedly connected between the damping claw 3057 and the anti-vibration ring 3051, optimizing the installation method of the damping assembly, simplifying the installation and disassembly process, facilitating maintenance and repair, and reducing maintenance costs and difficulty. A damping arm 3054 is fixedly connected inside the damping shell 3056, and a torsion spring 3055 is fitted on the damping arm 3054, improving the energy absorption effect and vibration reduction capacity of the damping assembly. The synergistic effect of the damping arm 3054 and the torsion spring 3055 can absorb and offset the vibration and impact generated during operation, reducing the vibration amplitude and noise of the equipment, and improving the operational stability and environmental friendliness of the equipment. The torsion spring 3055 enhances the elastic recovery capability of the damping assembly, enabling it to quickly return to its original state after vibration or impact, further improving the stability and reliability of the equipment. Furthermore, the design of the damping assembly optimizes the power transmission path, reducing energy loss due to vibration and improving transmission and operational efficiency. The combination of the damping arm 3054 and the torsion spring 3055 not only reduces mechanical wear but also extends the equipment's service life, lowering maintenance frequency and costs. The fixed connection of the damping shell 3056 enhances the overall rigidity of the equipment, reducing swaying and offset during operation, and improving operational accuracy and reliability. The fixed connection between the damping assembly and the anti-vibration ring 3051 further enhances the equipment's vibration resistance and stability. The anti-vibration ring 3051 not only optimizes the fixing method of the outlet pipe 4 but also reduces vibration and noise caused by liquid flow, improving operational comfort and environmental friendliness. The synergistic effect of the damping assembly and the anti-vibration ring 3051 makes the equipment operate more smoothly and efficiently, reducing energy loss and mechanical failures.

[0035] In some embodiments of this application, see Figures 4-5 As shown, where Figure 5 The structural diagram omitting the stabilizing plate 701 is because the stabilizing plate 701 would obstruct part of the gear connection structure. Figure 4 For a complete structure, Figure 5To omit the diagram showing only the gear and shaft connection structure of the stabilizing plate 701, the stabilizing mechanism 7 includes a stabilizing plate 701, a driven planetary gear 702, a synchronous pulley 703, a gear train ring gear 704, a driving planetary gear 705, a coupling arm 706, a first sun gear 707, and an anti-blocking component. The gear train ring gear 704 is fixedly connected to the inner wall of the vertical barrel 304, and several driven planetary gears 702 mesh with the inner wall of the gear train ring gear 704. The first drive shaft 303 is located at the axis of the gear train ring gear 704. Several coupling arms 706 are provided, and the coupling arms 706 are fixedly connected to the first drive shaft 303. The other end of the coupling arm 706 is connected to the driven planetary gear 702. A fixed connection is made, with a synchronous gear 703 fixedly connected below the driven planetary gear 702. A driving planetary gear 705 is provided below the coupling arm 706. The driving planetary gear 705 is fixedly connected to the first drive shaft 303 and meshes with the synchronous gear 703. A first sun gear 707 is also provided on the first drive shaft 303. The first sun gear 707 is located below the synchronous gear 703 and meshes with an anti-blocking component. Several stabilizing plates 701 are provided, with the plates 701 located above the coupling arm 706, below the synchronous gear 703, and below the first sun gear 707, respectively.

[0036] In some embodiments of this application, the anti-clogging component includes a filter plate, a driven shaft 708, a synchronous pinion 709, and an anti-clogging impeller 710. The synchronous pinion 709 is fixedly connected to the driven shaft 708 and meshes with the first sun gear 707. The anti-clogging impeller 710 is fixedly connected to the lower end of the driven shaft 708 and is located on one side of the filter plate.

[0037] Specifically, when the drive motor 1 drives the first drive shaft 303 to rotate, the coupling arm 706 rotates synchronously. The coupling arm 706 is fixedly connected to the driven planetary gear 702, which in turn rotates on the inner wall of the gear train ring 704. When the first drive shaft 303 rotates, it drives the drive planetary gear 705 to rotate, which in turn drives the synchronous pulley 703 to rotate. The synchronous pulley 703 is fixedly connected to the driven planetary gear 702 and is located below the driven planetary gear 702. Therefore, the synchronous pulley 703 and the driven planetary gear 702 rotate along the inner wall of the gear train ring 704. A first sun gear 707 is sleeved below the first drive shaft 303. The first sun gear 707 meshes with the synchronous pinion 709. That is, when the first drive shaft 303 rotates, it drives the synchronous pinion 709 to rotate, which in turn drives the driven shaft 708 to rotate, which in turn drives the anti-clogging impeller 710 to continuously strike the filter plate to prevent the filter plate from clogging.

[0038] Understandably, the high-speed rotation input from the drive motor 1 is transmitted through the first drive shaft 303. The drive planetary gear 705 is directly fixed to the first drive shaft 303 and meshes with the synchronous pulley 703 fixed below the driven planetary gear 702. The reduced speed and increased torque are ultimately transmitted to the driven planetary gear 702 fixedly connected to the synchronous pulley 703, and then act on the guide mechanism 5 of the drive pump. Reducing the speed of the pump impeller is a direct and effective way to reduce the pump head. Therefore, there is no need to change the motor speed or use an additional complex speed change device; the pump head can be reduced simply through the built-in planetary gear system. By reducing speed, the pump can be flexibly adapted to different head requirements, thus expanding its application range. The gear ring 704 is fixed to the inner wall of the pump casing, providing an absolutely stable reference. The driven planetary gear 702 meshes with the gear ring 704 and is rigidly connected to the central first drive shaft 303 by the coupling arm 706. When the first drive shaft 303 rotates, it forces the driven planetary gear 702 to rotate through the coupling arm 706. Since the gear ring 704 is fixed, the driven planetary gear 702 will inevitably revolve around the center of the first drive shaft 303 (i.e., the pump shaft centerline) while rotating on its own axis.

[0039] Several driven planetary gears 702 and their corresponding synchronous pulleys 703 are evenly distributed around the first drive shaft 303 and rigidly connected to the central shaft via coupling arms 706. During their revolution, their bearings or support points essentially become dynamic radial support points for the first drive shaft 303 at multiple circumferential positions. The traditional single central shaft support is transformed into a "distributed support ring" composed of multiple rigid components revolving around the central shaft. This support ring tightly "grips" the central long shaft via coupling arms 706 and uses its own rolling meshing on the fixed gear train ring 704 as a constraint basis, increasing... The increased radial stiffness of the long shaft during rotation resists radial loads caused by water flow impact and impeller imbalance forces, suppressing lateral bending and swaying of the long shaft. Long shaft swaying is a major source of noise (such as friction noise and vibration noise) and premature wear in submersible pumps. The strong suppression of swaying through the aforementioned distributed multi-point support structure directly reduces abnormal friction and collisions caused by misalignment between the shaft and bearings / seals. Simultaneously, the forced planetary gear meshing transmission (driven planetary gear 702 and fixed gear ring 704, driving planetary gear 705 and synchronous pulley 703) and the rigid connection of the coupling arm 706 ensure... The deterministic nature of the power transmission path reduces backlash and impact during transmission. The internal gear synchronization structure (the driving planetary gear 705 drives the synchronous pulley 703, which is fixed to the driven planetary gear 702 to ensure consistent rotation speed) further enhances the coordination and stability of the gear train's internal operation, making the entire pump shaft system run more smoothly and steadily. This reduces mechanical noise and harmful vibration, improves the working environment, and reduces fatigue damage to the equipment and surrounding structures caused by noise. The suppression of long shaft wobble directly reduces the friction between the shaft and radial bearings and shaft seals (mechanical seals or packing seals). Uneven wear and uniform force distribution make the wear of bearings and seals more uniform and slower, reducing abnormal friction and collisions and lowering the wear rate of related contact surfaces. Smooth operation reduces the alternating stress and impact load on components, alleviating structural fatigue. Therefore, it plays a decisive role in extending the service life of the long shaft itself, bearings, shaft seals and other pump internal components that are susceptible to vibration, reducing maintenance frequency and cost. Multiple stabilizing plates 701 set at key locations (above the coupling arm 706, below the synchronous pulley 703, and below the first sun gear 707) constitute an axially layered rigid support frame.

[0040] These provide stable axial and radial positioning support points for the rotating shaft system (first drive shaft 303, coupling arm 706) and gear assembly (synchronizing gear 703, first sun gear 707). These stabilizing plates 701 work in conjunction with the distributed support rings formed by the planetary gear train to constrain the degrees of freedom of the long shaft in all directions (especially radial and axial), ensuring that the entire transmission chain can maintain precise alignment and structural rigidity even under heavy loads. This further consolidates the effects of vibration reduction, noise reduction, and wear reduction. The anti-clogging assembly (synchronizing pinion 709 -> driven shaft 708 -> anti-clogging impeller 710) is driven by the first sun gear 707. Utilizing the power surplus after the main reduction gear, the anti-clogging impeller 710 is continuously driven to knock or disturb the filter plate, preventing the filter plate at the pump suction end from clogging due to impurity accumulation. This avoids problems such as reduced flow rate, reduced pump efficiency, and even cavitation damage to the impeller caused by clogging, ensuring that the pump can maintain the expected flow rate and continuous stable operation even under reduced head conditions.

[0041] In some embodiments of this application, the stabilizing mechanism 7 further includes a second sun gear 711 and a second drive shaft 712. The second sun gear 711 is fixedly connected to the second drive shaft 712. The second sun gear 711 meshes with the first sun gear 707. The second drive shaft 712 is fixedly connected to the guide mechanism 5.

[0042] In some embodiments of this application, the flow guiding mechanism 5 includes a centrifugal impeller 501 and a hub 502. One side of the hub 502 is fixedly connected to the second drive shaft 712, and the other side of the hub 502 is fixedly connected to the centrifugal impeller 501. The centrifugal impeller 501 is arranged to rotate outward along the axis of the hub 502.

[0043] Specifically, the second drive shaft 712 and the driven shaft 708 are arranged opposite to each other and are both meshed with the first sun gear 707. The second drive shaft 712 meshes with the first sun gear 707 through the second sun wheel 711. When the first drive shaft 303 rotates, it drives the second sun wheel 711 to rotate, which in turn drives the second drive shaft 712 to rotate. At the same time, it drives the centrifugal impeller 501 and the hub 502 to rotate, so as to achieve the effect of transporting liquid to the liquid outlet pipe 4 by centrifugal force.

[0044] Understandably, by using the first sun gear 707 as the central power distribution node, simultaneously meshing with the synchronizing pinion 709 of the lower anti-blocking component (driving the anti-blocking impeller 710) and the upper second sun gear 711 (driving the flow guiding mechanism 5), the rotational energy of the first drive shaft 303 is efficiently decomposed into two independent outputs. The anti-blocking function (anti-blocking impeller 710) and the core pumping function (centrifugal impeller 501) do not require independent motors or transmission chains, significantly simplifying the power structure. A single input drives multiple actions, reducing energy transfer losses and improving the overall utilization efficiency of the power system. The synchronization between the second sun gear 711 and the anti-blocking component... The pinion 709 is symmetrically meshed on both sides of the first sun gear 707 (the second drive shaft 712 and the driven shaft 708 are opposite each other). When the first sun gear 707 rotates, it cancels out the radial unbalanced load caused by gear meshing. The balance of radial forces directly reduces the bending stress and radial runout of the long shaft during rotation. In conjunction with the original distributed support of the planetary gear system, it further enhances the dynamic rigidity and rotational stability of the long shaft, and further suppresses the vibration and yaw of the long shaft. The second sun gear 711 is fixed to the second drive shaft 712 and directly meshes with the first sun gear 707. This meshing relationship ensures that power is transferred from the first drive shaft 303 → The efficient and low-loss transmission of the first sun gear 707 → second sun gear 711 → second drive shaft 712 is achieved. The second drive shaft 712 directly drives the centrifugal impeller 501 to rotate via the hub 502. The blades of the centrifugal impeller 501 are arranged radially outward along the axis of the hub 502. Its high-speed rotation generates a strong centrifugal force, which throws the liquid from the center of the impeller to the edge at high speed, forming a directional flow in the pump casing flow channel. This achieves efficient pressurized delivery of the liquid from the suction port to the discharge pipe 4. This design optimizes the flow field distribution within the pump and improves pumping efficiency. The flow guiding mechanism 5 (second sun gear 711, second drive shaft 712) 12. The hub 502 and centrifugal impeller 501 are located above the original stabilizing mechanism 7 and anti-clogging components, making full use of the axial space inside the pump body and achieving highly compact vertical integration. All key rotating parts (first drive shaft 303 and first sun gear 707) serve multiple functions (driving the planetary gear system to revolve / reducing the stabilizing shaft, driving the anti-clogging impeller 710, and driving the centrifugal impeller 501), reducing the need for independent shaft systems and support structures. The main power transmission is concentrated in the central area, reducing the complex sealing problems caused by multiple shafts passing through the chamber. The overall structure is simpler, potential failure points are reduced, and the inherent reliability and maintainability are improved.

[0045] In summary, the beneficial effects of this invention are as follows: By fixing the mounting plate 2 to the lower end of the drive motor 1, not only is the installation stability of the drive motor 1 improved, but the rigidity of the overall structure is also enhanced, thereby reducing vibration and noise during operation and improving the service life and reliability of the equipment. The fixing method of the mounting plate 2 also simplifies the installation and disassembly process, facilitates maintenance and repair, and reduces maintenance costs and difficulty. Secondly, the driven mechanism 3 is fixedly connected to the output end of the drive motor 1, reducing energy loss during transmission and improving transmission efficiency. The driven mechanism 3 optimizes the power transmission path, making the pump run more smoothly, reducing mechanical wear, and improving the operating efficiency and reliability of the equipment. At the same time, a stabilizing mechanism 7 is provided at the lower end of the driven mechanism 3, further enhancing the stability of the structure, preventing loosening or displacement due to long-term operation, and ensuring the long-term stable operation of the pump. Below the stabilizing mechanism 7 is a flow guiding mechanism 5, which optimizes the liquid flow path, reduces flow resistance and turbulence, and improves the liquid delivery efficiency. A liquid outlet pipe 4 is provided on one side of the flow guiding mechanism 5. The liquid outlet pipe 4 is detachably connected to the flow guiding mechanism 5, which facilitates the replacement and cleaning of the liquid outlet pipe 4, reduces downtime caused by blockage or contamination, and improves the availability and ease of maintenance of the equipment. At the same time, a filter plate is provided between the liquid outlet pipe 4 and the flow guiding mechanism 5. The filter plate can intercept impurities and particles in the liquid, preventing them from entering the interior of the liquid outlet pipe 4, protecting the internal structure of the liquid outlet pipe 4, and extending the service life of the equipment.

[0046] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0047] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A long-shaft submersible pump with high stability, characterized in that, include: A drive motor (1) is fixedly connected to a mounting plate (2) at its lower end. A driven mechanism (3) is fixedly connected to the output end of the drive motor (1). A stabilizing mechanism (7) is provided at the lower end of the driven mechanism (3). A flow guiding mechanism (5) is connected below the stabilizing mechanism (7). A liquid outlet pipe (4) is provided on one side of the flow guiding mechanism (5). The liquid outlet pipe (4) and the flow guiding mechanism (5) are detachably connected. A filter plate is provided between the liquid outlet pipe (4) and the flow guiding mechanism (5). The driven mechanism (3) includes a coupling (301), a motor base (302), a first drive shaft (303), a vertical barrel (304), and a shock-absorbing component (305). The two ends of the motor base (302) are respectively fixedly connected to the drive motor (1) and the mounting plate (2). The coupling (301) is provided inside the motor base (302). The first drive shaft (303) is connected to the output end of the drive motor (1) through the coupling (301). The vertical barrel (304) is located at the lower end of the mounting plate (2) and extends through the flow guiding mechanism (5). The lower part of the first drive shaft (303) is located inside the vertical barrel (304) and connected to the stabilizing mechanism (7). The shock-absorbing component (305) is fixedly connected to the outer wall of the vertical barrel (304). The anti-shake component (305) includes an anti-shake ring (3051), a reinforcing member (3052), an anti-shake component (3053), and a damping assembly. A plurality of anti-shake components (3053) are provided. The two ends of the plurality of anti-shake components (3053) are respectively fixedly connected to the mounting plate (2) and the flow guiding mechanism (5). One end of the anti-shake ring (3051) is fixedly connected to the plurality of anti-shake components (3053), and the other end of the anti-shake ring (3051) is fixedly connected to the outer wall of the liquid outlet pipe (4). A reinforcing member (3052) is provided on the anti-shake ring (3051). The reinforcing member (3052) and the anti-shake ring (3051) are fixedly connected by bolts. The vertical barrel (304) is located at the axis of the anti-shake ring (3051), and the vertical barrel (304) is fixedly connected to the anti-shake ring (3051) through the damping assembly. The stabilizing mechanism (7) includes a stabilizing plate (701), a driven planetary gear (702), a synchronous pulley (703), a gear train ring (704), a driving planetary gear (705), a coupling arm (706), a first sun gear (707), and an anti-blocking component. The gear train ring (704) is fixedly connected to the inner wall of the vertical barrel (304). Several driven planetary gears (702) mesh with the inner wall of the gear train ring (704). The first driving shaft (303) is located at the axis of the gear train ring (704). Several coupling arms (706) are provided, and the coupling arms (706) are fixedly connected to the first driving shaft (303). The other end of the coupling arm (706) is fixedly connected to the driven planetary gear (702). A synchronous pulley (703) is fixedly connected below the coupling arm (702). A driving planetary gear (705) is provided below the coupling arm (706). The driving planetary gear (705) is fixedly connected to the first drive shaft (303) and meshes with the synchronous pulley (703). A first sun gear (707) is also provided on the first drive shaft (303). The first sun gear (707) is located below the synchronous pulley (703) and meshes with the anti-blocking component. A plurality of stabilizing plates (701) are provided. The plurality of stabilizing plates (701) are respectively located above the coupling arm (706), below the synchronous pulley (703), and below the first sun gear (707).

2. The long-shaft submersible pump with high stability according to claim 1, characterized in that, The damping assembly includes a damping arm (3054), a torsion spring (3055), a damping shell (3056), and a damping claw (3057). The damping claw (3057) is fixedly connected to the outer wall of the vertical barrel (304). The damping shell (3056) is fixedly connected between the damping claw (3057) and the anti-shake ring (3051). The damping arm (3054) is fixedly connected inside the damping shell (3056). The torsion spring (3055) is sleeved on the damping arm (3054).

3. The long-shaft submersible pump with high stability according to claim 1, characterized in that, The anti-clogging component includes a driven shaft (708), a synchronous pinion (709), and an anti-clogging impeller (710). The synchronous pinion (709) is fixedly connected to the driven shaft (708), and the synchronous pinion (709) meshes with the first sun gear (707). The anti-clogging impeller (710) is fixedly connected to the lower end of the driven shaft (708), and the anti-clogging impeller (710) is located on one side of the filter plate.

4. The long-shaft submersible pump with high stability according to claim 3, characterized in that, The stabilizing mechanism (7) further includes a second sun gear (711) and a second drive shaft (712). The second sun gear (711) is fixedly connected to the second drive shaft (712). The second sun gear (711) meshes with the first sun gear (707). The second drive shaft (712) is fixedly connected to the flow guiding mechanism (5).

5. The long-shaft submersible pump with high stability according to claim 4, characterized in that, The flow guiding mechanism (5) includes a centrifugal impeller (501) and a hub (502). One side of the hub (502) is fixedly connected to the second drive shaft (712), and the other side of the hub (502) is fixedly connected to the centrifugal impeller (501). The centrifugal impeller (501) is arranged to rotate outward along the axis of the hub (502).

Images