Block rotor for integrated pump

Abstract

The utility model relates to the technical field of integrated pumps, in particular to a block rotor for an integrated pump, which is characterized in that a rotor assembly is matched with a first bearing and a second bearing to transmit power, and meanwhile, the magnetic leakage of the rotor assembly is reduced through a plastic coating mechanism, so that the practicability of the block rotor for the integrated pump is improved; comprising a first bearing and a second bearing; the motor further comprises a rotor assembly and a plastic coating mechanism, the first bearing and the second bearing are both installed in the rotor assembly, and the rotor mechanism is located in the plastic coating mechanism. The rotor assembly is matched with the first bearing and the second bearing to transmit power, and the plastic coating mechanism seals the rotor assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated pumps, in particular to a segmented rotor for an integrated pump. Background Art

[0002] A brushless motor is a motor without carbon brushes and a commutator. For example, the brushless motor heat dissipation component, brushless motor disclosed in the utility model patent with the publication number CN207835291U, and a split brushless motor for an electric circular saw disclosed in the utility model patent with the publication number CN209963842U, etc. drive the rotor to rotate by controlling the current in the coil through an electronic controller. It uses a set of electronic devices to sense the position of the permanent magnet poles through Hall elements or coil back electromotive force. According to this sensing, an electronic circuit is used to timely switch the direction of the current in the coil to ensure the generation of magnetic force in the correct direction to drive the motor. Due to the absence of carbon brush friction, the brushless motor has a longer service life, higher efficiency, and lower noise.

[0003] However, the rotor structure of the existing brushless motor is relatively complex and prone to magnetic leakage, resulting in poor practicability. Therefore, there is an urgent need for a segmented rotor for an integrated pump to improve the above problems. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a segmented rotor for an integrated pump, which transmits power through a rotor assembly in cooperation with a first bearing and a second bearing, and at the same time reduces magnetic leakage of the rotor assembly through a plastic coating mechanism, thereby improving the practicability of a segmented rotor for an integrated pump.

[0005] A segmented rotor for an integrated pump of the utility model includes a first bearing and a second bearing; it further includes a rotor assembly and a plastic coating mechanism. The first bearing and the second bearing are both installed in the rotor assembly, and the rotor mechanism is located in the plastic coating mechanism;

[0006] The rotor assembly cooperates with the first bearing and the second bearing to transmit power, and the plastic coating mechanism seals the rotor assembly;

[0007] Power is transmitted through the rotor assembly in cooperation with the first bearing and the second bearing, and at the same time magnetic leakage of the rotor assembly is reduced through the plastic coating mechanism, thereby improving the practicability of a segmented rotor for an integrated pump.

[0008] Preferably, the rotor assembly includes multiple groups of rotor cores and multiple groups of permanent magnets, and the multiple groups of permanent magnets are respectively installed between the multiple groups of rotor cores; through the split structure, the convenience of production and installation of the rotor cores and permanent magnets is improved.

[0009] Preferably, both the rotor core and the permanent magnet are in 6 pieces.

[0010] Preferably, the plastic coating mechanism includes a first plastic coating layer and a second plastic coating layer. The first plastic coating layer wraps around the surfaces of multiple rotor cores and permanent magnets to fix the multiple rotor cores and permanent magnets. Moreover, the first plastic coating layer between the multiple rotor cores is in a mesh structure, and the second plastic coating layer wraps around the surface of the first plastic coating layer. The rotor cores and permanent magnets are limited and fixed by the first plastic coating layer and the second plastic coating layer, and magnetic leakage is reduced, thereby improving the stability of the integrated pump segmented rotor.

[0011] Preferably, the inner walls and outer walls of the multiple rotor cores are both cut into arc shapes.

[0012] Preferably, a limiting groove is provided on the inner wall of each rotor core, and two wedge-shaped notches are provided on each rotor core, and the wedge-shaped notches are near the limiting groove. To increase the magnetic resistance inside the magnetic tile rotor core, according to the fact that magnetic flux always closes along the path with the smallest magnetic resistance, thereby generating magnetic tension and then forming an electromagnetic torque with magnetic resistance properties. Therefore, magnetic leakage can be reduced, and its magnetic circuit is along the air gap direction, thereby increasing the air gap magnetic density, increasing the electromagnetic torque, and improving the power density.

[0013] Preferably, the outer diameter of the rotor assembly is 39.2 mm.

[0014] Preferably, the multiple permanent magnets are all ferrite permanent magnets.

[0015] Compared with the prior art, the beneficial effect of the present utility model is that the power is transmitted through the rotor assembly in cooperation with the first bearing and the second bearing, and at the same time, the plastic coating mechanism reduces the magnetic leakage of the rotor assembly, thereby improving the practicability of an integrated pump segmented rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded structural schematic diagram of the present utility model;

[0017] Figure 2 is a first axonometric structural schematic diagram of the present utility model;

[0018] Figure 3 is a second axonometric structural schematic diagram of the present utility model;

[0019] Figure 4 is a front-view sectional structural schematic diagram of the present utility model;

[0020] Figure 5 is a structural schematic diagram of the rotor core and permanent magnet before the improvement of the present utility model;

[0021] Figure 6 is a structural schematic diagram of the rotor core and a part of the first plastic coating layer of the present utility model;

[0022] Figure 7It is a schematic structural diagram of the rotor core and the permanent magnet after the improvement of the present utility model;

[0023] Figure 8 It is an enlarged schematic structural diagram of the rotor core of the present utility model;

[0024] Figure 9 It is a schematic structural diagram of the magnetic density waveform before the improvement of the present utility model;

[0025] Figure 10 It is a schematic structural diagram of the magnetic density waveform after the improvement of the present utility model;

[0026] Figure 11 It is a schematic structural diagram of the magnetic density condition before the improvement of the present utility model;

[0027] Figure 12 It is a schematic structural diagram of the magnetic density condition after the improvement of the present utility model.

[0028] Markings in the attached drawings: 1. First bearing; 2. Second bearing; 3. Rotor core; 4. Permanent magnet; 5. First plastic coating layer; 6. Second plastic coating layer; 7. Limiting groove; 8. Wedge-shaped notch. Detailed implementation mode

[0029] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant attached drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0030] Embodiment

[0031] As Figures 1 to 12 shown, an integrated pump split rotor includes a first bearing 1 and a second bearing 2; it further includes a rotor assembly and a plastic coating mechanism. The first bearing 1 and the second bearing 2 are both installed in the rotor assembly, and the rotor mechanism is located in the plastic coating mechanism;

[0032] The rotor assembly cooperates with the first bearing 1 and the second bearing 2 to transmit power, and the plastic coating mechanism seals the rotor assembly;

[0033] The rotor assembly includes multiple groups of rotor cores 3 and multiple groups of permanent magnets 4. The multiple groups of permanent magnets 4 are respectively installed between the multiple groups of rotor cores 3;

[0034] Both the rotor core 3 and the permanent magnet 4 are in 6 pieces;

[0035] The plastic coating mechanism includes a first plastic coating layer 5 and a second plastic coating layer 6. The first plastic coating layer 5 wraps around the surfaces of the multiple groups of rotor cores 3 and the permanent magnets 4 to fix the multiple groups of rotor cores 3 and the multiple groups of permanent magnets 4, and the second plastic coating layer 6 wraps around the surface of the first plastic coating layer 5;

[0036] The inner walls and outer walls of the multiple groups of rotor cores 3 are cut into arc shapes;

[0037] Limit grooves 7 are provided on the inner walls of each group of rotor cores 3, and two sets of wedge-shaped notches 8 are provided on each group of rotor cores 3, and the wedge-shaped notches 8 are located near the limit grooves 7;

[0038] The outer diameter of the rotor assembly is 39.2 mm;

[0039] For the present rotor structure, the rotor outer diameter OD is 39.2 mm, the ID stator inner diameter is 43.2, the magnetic tile thickness h = (OD - ID) / 2*(2.1 - 2.5) = 4.2 - 5 mm, and the magnet uses ferrite permanent magnet. Within this size range, the power density can be increased while the cost can be reduced;

[0040] The present rotor structure has two forms. For products with general power density requirements, the rotor cores are connected through a mesh structure, and the connection thickness k = the total height L of the core (0.25 - 0.35). Within this range, while ensuring the connection, the loss is minimized. For products with high power density requirements, the mesh connection can be directly cancelled, and the direct block technology can be adopted.

[0041] The first bearing 1 and the second bearing 2 of the integrated pump block rotor of the present utility model are purchased on the market. Those skilled in the art only need to install and operate according to the attached instruction manual, without the need for creative work by those skilled in the art.

[0042] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An integrated segmented rotor for a pump, comprising a first bearing (1) and a second bearing (2); characterized in that, It also includes a rotor assembly and a plastic coating mechanism. The first bearing (1) and the second bearing (2) are both installed in the rotor assembly, and the rotor mechanism is located in the plastic coating mechanism; The rotor assembly cooperates with the first bearing (1) and the second bearing (2) to transmit power, and the plastic coating mechanism seals the rotor assembly; The rotor assembly includes multiple groups of rotor cores (3) and multiple groups of permanent magnets (4). The multiple groups of permanent magnets (4) are respectively installed between the multiple groups of rotor cores (3); Both the rotor core (3) and the permanent magnet (4) are in six pieces; The plastic coating mechanism includes a first plastic coating layer (5) and a second plastic coating layer (6). The first plastic coating layer (5) wraps around the surfaces of the multiple groups of rotor cores (3) and permanent magnets (4) to fix the multiple groups of rotor cores (3) and the multiple groups of permanent magnets (4), and the second plastic coating layer (6) wraps around the surface of the first plastic coating layer (5).

2. The integrated segmented rotor for a pump according to claim 1, characterized in that, The inner and outer walls of the multiple groups of rotor cores (3) are cut into arc shapes.

3. The integrated segmented rotor for a pump according to claim 1, wherein, A limiting groove (7) is provided on the inner wall of each group of rotor cores (3), and two groups of wedge-shaped notches (8) are provided on each group of rotor cores (3), and the wedge-shaped notches (8) are located near the limiting groove (7).

4. The integrated segmented rotor for a pump according to claim 1, wherein The outer diameter of the rotor assembly is 39.2 mm.

5. An integrated segmented rotor for a pump according to claim 1, characterized in that, The multiple groups of permanent magnets (4) are all ferrite permanent magnets.

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