Marine magnetic pump integrated thrust bearing motor connecting seat

Abstract

The utility model relates to motor connecting seat technical field discloses marine magnetic force pump integrated thrust bearing motor connecting seat, include: connecting seat motor connecting seat and pump shaft motor connecting seat, pump shaft motor connecting seat sets up in the inner chamber of connecting seat motor connecting seat, the lower end of connecting seat motor connecting seat evenly is provided with reinforcing rib motor connecting seat, the outer portion of pump shaft motor connecting seat is provided with fixed bearing motor connecting seat, lower bearing motor connecting seat and thrust disc motor connecting seat respectively, and alloy inner ring motor connecting seat is arranged between pump shaft motor connecting seat and connecting seat motor connecting seat. The marine magnetic force pump integrated thrust bearing motor connecting seat, guarantees stable structure durable, the magnetic coupling realizes the complete isolation of inner and outer magnetic ring through the isolating bush, seals the transmission power, prevents medium leakage, satisfies the sealing requirement of marine, alloy inner ring auxiliary positioning pump shaft, reduces the friction, helps the upper bearing stable support pump shaft, guarantees the smooth operation of pump shaft.

Description

Technical Field

[0001] This utility model relates to the technical field of motor connectors, specifically an integrated thrust bearing motor connector for marine magnetic pumps. Background Technology

[0002] Marine magnetic pumps are key equipment in marine propulsion systems for fluid transport, and their operational stability, sealing performance, and structural compactness have a significant impact on the overall reliability and safety of the vessel. With increasing demands for lightweight, integrated, and easy-to-maintain marine equipment, the component design of magnetic pumps must balance functional integration and structural optimization to meet the needs of complex operating conditions.

[0003] Traditional marine magnetic pump motor mounting brackets typically employ a split structure, which suffers from limited functionality and complex installation. They cannot simultaneously meet the multiple requirements of supporting the motor, accommodating the thrust bearing, and being compatible with magnetic couplings, resulting in redundant overall structure, high cost, and limited versatility. In some designs, due to unreasonable thrust bearing unit fixing methods, insufficient rotor axial force balance can occur, leading to rotor misalignment or friction, affecting pump shaft operation stability and equipment lifespan. Furthermore, the limited internal space of conventional mounting brackets makes it difficult to accommodate various specifications of magnetic couplings, and the lack of reserved functional interfaces prevents direct installation of components such as exhaust valves and temperature sensors, increasing maintenance difficulty and condition monitoring costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated thrust bearing motor connector for marine magnetic pumps. This solves the problem that the aforementioned design, due to an unreasonable fixing method for the thrust bearing unit, is prone to insufficient axial force balance of the rotor, leading to rotor axial movement or friction, which affects the smooth operation of the pump shaft and the lifespan of the equipment. In addition, conventional connectors have limited internal space, making it difficult to accommodate various specifications of magnetic couplings, and lack reserved functional interfaces, making it impossible to directly install components such as exhaust valves and temperature sensors, which increases the difficulty of maintenance and the cost of condition monitoring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated thrust bearing motor connecting seat for marine magnetic pumps, comprising: a connecting seat motor connecting seat and a pump shaft motor connecting seat. The pump shaft motor connecting seat is disposed within the inner cavity of the connecting seat motor connecting seat. Reinforcing rib motor connecting seats are evenly distributed at the lower end of the connecting seat motor connecting seat. A fixed bearing motor connecting seat, a lower bearing motor connecting seat, and a thrust disc motor connecting seat are respectively disposed outside the pump shaft motor connecting seat. An alloy inner ring motor connecting seat is disposed between the pump shaft motor connecting seat and the connecting seat motor connecting seat. An upper bearing motor connecting seat is disposed outside the alloy inner ring motor connecting seat. A magnetic coupling inner magnetic ring motor connecting seat is disposed at the upper end of the outer surface of the pump shaft motor connecting seat. A slot is provided on the outer surface of the magnetic coupling outer magnetic ring.

[0006] The magnetic coupling has an inner magnetic ring motor connector seat with an outer magnetic ring motor connector seat, and an outer magnetic ring motor connector seat with a motor bracket. The outer connector seat also has a pre-drilled hole. A pressure cap motor connector seat is located between the upper bearing motor connector seat and the connecting seat motor connector seat. The fixed bearing motor connector seat, lower bearing motor connector seat, thrust disc motor connector seat, and upper bearing motor connector seat together form the thrust bearing unit of the magnetic pump. This unit is fixed inside the connecting seat motor connector seat via the pressure cap motor connector seat. It can withstand and balance the axial force acting on the pump rotor, preventing axial movement or friction of the rotor assembly and ensuring stable rotor operation at the set position.

[0007] The motor connector integrates three core functions: "motor support bracket," "thrust bearing unit," and "magnetic coupling compatibility." Compared to traditional split structures, it simplifies the installation process and saves production costs. Furthermore, the internal dimensions of the motor connector have been enlarged, allowing compatibility with various sizes of magnetic couplings as long as the maximum outer diameter of the magnetic coupling is smaller than this enlarged dimension. The pre-drilled holes in the motor connector can be used to install external functional components such as exhaust valves, vent valves, and temperature sensors, further expanding the functionality of the motor connector.

[0008] Preferably, the number of reinforcing rib motor connectors is six, and the six sets of reinforcing rib motor connectors are evenly distributed along the circumferential direction of the lower end of the motor connector. The six sets of evenly distributed circumferential reinforcing rib motor connectors can significantly improve the structural stability of the motor connector, enhance its strength and hardness, and enable it to stably withstand the pressure inside the pump, the tightening force of the bolts, and external stresses and vibrations. This prevents the motor connector from deforming due to uneven stress during long-term use, ensuring the reliability of the overall structure.

[0009] Preferably, the magnetic coupling is an integral unit comprising the outer magnetic ring motor connecting seat, the inner magnetic ring motor connecting seat, and the isolation sleeve motor connecting seat. This integral magnetic coupling is a transmission device that uses the magnetic force between permanent magnets to transmit torque. The outer magnetic ring motor connecting seat is connected to the motor shaft and located outside the isolation sleeve motor connecting seat. The inner magnetic ring motor connecting seat is connected to the pump shaft motor connecting seat and located inside the isolation sleeve motor connecting seat. The stationary isolation sleeve motor connecting seat completely separates the two, achieving a completely sealed power transmission and effectively preventing leakage of the pump medium, thus meeting the sealing requirements of marine magnetic pumps.

[0010] Preferably, the pressure cap motor connector is detachably connected to the connector motor connector via bolts, and a reinforcing plate is provided on the outside of the pressure cap motor connector. The detachable connection facilitates later inspection, maintenance, or replacement of the thrust bearing unit inside the connector motor connector, reducing the difficulty of maintenance operations. The reinforcing plate on the outside of the pressure cap motor connector enhances its structural strength, preventing deformation under stress when fixing the thrust bearing unit, ensuring the effective fixing of the thrust bearing unit, and thus guaranteeing the stability of the thrust bearing unit during operation.

[0011] Preferably, the inner wall of the alloy inner ring is interference-fitted with the outer wall of the pump shaft, and six sets of pre-drilled holes are evenly distributed along the circumference of the connecting seat.

[0012] Compared with the prior art, this utility model provides an integrated thrust bearing motor connection seat for marine magnetic pumps, which has the following advantages:

[0013] This marine magnetic pump features an integrated thrust bearing motor connector. The thrust bearing unit, consisting of a fixed bearing, lower bearing, thrust disc, and upper bearing, is fixed inside the connector with a pressure cap. It can withstand and balance the axial force of the pump rotor, preventing rotor slippage or friction, ensuring smooth rotor operation, and improving the lifespan and reliability of the magnetic pump. The connector integrates three functions: supporting the motor bracket, accommodating the thrust bearing unit, and accommodating magnetic couplings. Compared to traditional split structures, it simplifies installation, saves costs, and has enlarged internal dimensions, allowing compatibility with various specifications of magnetic couplings and improving versatility. Pre-drilled holes can accommodate exhaust valves, venting valves, temperature sensors, etc., expanding functionality and facilitating maintenance and status monitoring of the magnetic pump. Lower reinforcing ribs enhance the structural strength and rigidity of the connector, enabling it to withstand internal pump pressure, bolt tightening force, and external stress vibrations, ensuring structural stability and durability. The magnetic coupling achieves complete isolation between the inner and outer magnetic rings through an isolation sleeve, sealing power transmission, preventing media leakage, and meeting marine sealing requirements. An alloy inner ring assists in positioning the pump shaft, reducing friction, and helps the upper bearing stably support the pump shaft, ensuring smooth pump shaft operation. Attached Figure Description

[0014] Figure 1 This is a front view of the present utility model;

[0015] Figure 2 This is a schematic diagram of the bottom of the motor connector of this utility model;

[0016] Figure 3 This is a partial cross-sectional view of the outer magnetic ring of the magnetic coupling of this utility model.

[0017] In the diagram: 1. Connecting seat; 11. Reinforcing rib; 2. Pump shaft; 21. Fixed bearing; 22. Lower bearing; 23. Thrust disc; 3. Alloy inner ring; 31. Upper bearing; 4. Motor bracket; 5. Inner magnetic ring of magnetic coupling; 51. Isolation sleeve of magnetic coupling; 52. Outer magnetic ring of magnetic coupling; 6. Reserved hole; 7. Pressure cover; 8. Hole and slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides a technical solution, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3A marine magnetic pump integrated thrust bearing motor connecting seat includes: a connecting seat 1 and a pump shaft 2. The pump shaft 2 is located in the inner cavity of the connecting seat 1. Reinforcing ribs 11 are evenly arranged at the lower end of the connecting seat 1. A fixed bearing 21, a lower bearing 22 and a thrust disk 23 are respectively arranged on the outside of the pump shaft 2. An alloy inner ring 3 is arranged between the pump shaft 2 and the connecting seat 1. An upper bearing 31 is arranged on the outside of the alloy inner ring 3. A magnetic coupling inner magnetic ring 5 is arranged at the upper end of the outside of the pump shaft 2.

[0020] A magnetic coupling isolating sleeve 51 is provided outside the inner magnetic ring 5 of the magnetic coupling. A magnetic coupling outer magnetic ring 52 is provided outside the magnetic coupling isolation sleeve 51. A motor bracket 4 is provided outside the magnetic coupling outer magnetic ring 52. A reserved hole 6 is provided on the outside of the connecting seat 1. A pressure cover 7 is provided between the upper bearing 31 and the connecting seat 1. Among them, the fixed bearing 21, the lower bearing 22, the thrust plate 23, the alloy inner ring 3 and the upper bearing 31 together form the thrust bearing unit of the magnetic pump. This unit can be fixed inside the connecting seat 1 by the pressure cover 7. It can withstand and balance the axial force acting on the pump rotor, prevent the rotor assembly from axial movement or friction, and ensure that the rotor runs smoothly in the set position. The inner wall of the alloy inner ring 3 is interference-fitted with the outer wall of the pump shaft 2. Six sets of reserved holes 6 are evenly distributed along the circumference of the connecting seat 1. A groove 8 is provided on the outside of the magnetic coupling outer magnetic ring 52.

[0021] The connecting seat 1 integrates three core functions: "supporting the motor bracket 4", "accommodating the thrust bearing unit", and "compatible with magnetic couplings". Compared with the traditional split structure, it simplifies the installation process and saves production costs. In addition, the internal dimensions of the connecting seat 1 have been enlarged. As long as the maximum outer diameter of the magnetic coupling is smaller than the enlarged dimension, it can be compatible with magnetic couplings of various specifications and sizes. The reserved hole 6 can be used to install external functional components such as exhaust valves, vent valves, and temperature sensors, further expanding the functionality of the connecting seat 1.

[0022] There are six sets of reinforcing ribs 11, and these six sets of reinforcing ribs 11 are evenly distributed along the circumferential direction of the lower end of the connecting seat 1. The six sets of evenly distributed circumferential reinforcing ribs 11 can significantly improve the structural stability of the connecting seat 1, enhance its strength and hardness, and enable the connecting seat 1 to stably withstand the pressure inside the pump, the tightening force of the bolts, and the stress and vibration that may be brought by the outside. This prevents the connecting seat 1 from deforming due to uneven stress during long-term use and ensures the reliability of the overall structure.

[0023] The magnetic coupling assembly comprises the outer magnetic ring 52, the inner magnetic ring 5, and the isolation sleeve 51. This magnetic coupling is a transmission device that uses the magnetic force between permanent magnets to transmit torque. The outer magnetic ring 52 is connected to the motor shaft and located outside the isolation sleeve 51. The inner magnetic ring 5 is connected to the pump shaft 2 and located inside the isolation sleeve 51. The stationary isolation sleeve 51 completely separates the two, achieving a completely sealed power transmission and effectively preventing leakage of the pump medium, thus meeting the sealing requirements of marine magnetic pumps.

[0024] The gland 7 is detachably connected to the connecting seat 1 via bolts, and a reinforcing plate is provided on the outside of the gland 7. The detachable connection facilitates the inspection, maintenance, or replacement of the thrust bearing unit inside the connecting seat 1, reducing the difficulty of maintenance operations. The reinforcing plate on the outside of the gland 7 enhances the structural strength of the gland 7 itself, preventing deformation of the gland 7 under stress when fixing the thrust bearing unit, ensuring the fixing effect of the gland 7 on the thrust bearing unit, and thus ensuring the stability of the thrust bearing unit during operation.

[0025] The fixed bearing 21, lower bearing 22, and upper bearing 31 are all sliding bearings, with axially continuous lubrication grooves spaced on the outer wall of each bearing. Sliding bearings are characterized by simple structure, smooth operation, and strong impact resistance, making them suitable for the working environment of marine magnetic pumps. They ensure the smooth operation of the fixed bearing 21, lower bearing 22, and upper bearing 31, further improving the reliability and service life of the thrust bearing unit.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Marine magnetic pump integrated thrust bearing motor connection seat, including: A connecting seat (1) and a pump shaft (2) are provided. The pump shaft (2) is located in the inner cavity of the connecting seat (1). The lower end of the connecting seat (1) is uniformly provided with reinforcing ribs (11). The pump shaft (2) is characterized by having a fixed bearing (21), a lower bearing (22), and a thrust disc (23) respectively on its outer side. An alloy inner ring (3) is provided between the pump shaft (2) and the connecting seat (1). An upper bearing (31) is provided on the outer side of the alloy inner ring (3). A magnetic coupling is provided at the upper end of the outer side of the pump shaft (2). The magnetic ring (5) is provided with a magnetic coupling isolation sleeve (51) outside the magnetic coupling inner magnetic ring (5), and a magnetic coupling outer magnetic ring (52) is provided outside the magnetic coupling isolation sleeve (51). A motor bracket (4) is provided outside the magnetic coupling outer magnetic ring (52). A reserved hole (6) is provided outside the connecting seat (1). A pressure cap (7) is provided between the upper bearing (31) and the connecting seat (1). A hole groove (8) is provided outside the magnetic coupling outer magnetic ring (52).

2. The integrated thrust bearing motor connector for marine magnetic pumps according to claim 1, characterized in that: The number of the reinforcing ribs (11) is six groups, and the six groups of reinforcing ribs (11) are evenly distributed along the circumferential direction of the lower end of the connecting seat (1).

3. The integrated thrust bearing motor connector for marine magnetic pumps according to claim 1, characterized in that: The magnetic coupling is composed of the outer magnetic ring (52), the inner magnetic ring (5), and the isolation sleeve (51).

4. The integrated thrust bearing motor connector for marine magnetic pumps according to claim 1, characterized in that: The pressure cap (7) is detachably connected to the connecting seat (1) by bolts, and a reinforcing plate is provided on the outside of the pressure cap (7).

5. The integrated thrust bearing motor connector for marine magnetic pumps according to claim 1, characterized in that: The fixed bearing (21), lower bearing (22) and upper bearing (31) are all sliding bearings, and the outer wall of the bearings is provided with axially penetrating lubrication grooves at intervals.

6. The integrated thrust bearing motor connector for marine magnetic pumps according to claim 1, characterized in that: The inner wall of the alloy inner ring (3) is interference-fitted with the outer wall of the pump shaft (2), and the reserved holes (6) are evenly distributed in six groups along the circumference of the connecting seat (1).

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