Electromagnetic rotor pump

Abstract

The application discloses an electromagnetic rotor pump, which comprises a rotor, an elliptical cavity is arranged in the rotor, a stator is sleeved in the elliptical cavity, the stator is fixed to an outer shell, sliding grooves are arranged on the two sides of the stator, and sliding blocks are sleeved in the sliding grooves. The electromagnetic rotor pump is rotated by a magnetic field, and the sliding blocks are driven to slide along the sliding grooves and the elliptical inner hole of the rotor. The stator and the sliding blocks are arranged in a closed cavity, the closed cavity changes through the action of the sliding blocks. When liquid medium enters the inlet of the one-way valve connector, the pressure of the closed cavity changes periodically due to the change of the closed cavity. When the pressure rises to the wave crest, the liquid medium can flow out through the one-way valve connector of the outlet, and the pressure liquid medium is used for lubrication or transmission, so that the economic efficiency is better, the occupied space is reduced, the installation and arrangement are more favorable, the working efficiency is improved, and the intelligent requirement is easier to realize.

Description

Technical Field

[0001] This invention relates to the field of hydraulic drives, specifically to an electromagnetic rotor pump. Background Technology

[0002] In the field of construction machinery, hydraulic systems are widely used due to their high efficiency, sensitivity, and reliability, making them indispensable in transmission systems. With the rapid development of the industry, intelligentization and automation have become hot topics for end-users. At the same time, significant progress has been made in new materials technology and hybrid power technology, leading to a greater emphasis on lightweighting and intelligentization in construction machinery. This places higher demands on hydraulic systems and components.

[0003] Currently, most hydraulic power components are driven by fuel engines or electric motors. This combination occupies a large space, is not economical, is inflexible in installation, and is not conducive to the coordinated development of automation and intelligence.

[0004] In view of the above problems, an electromagnetic rotor pump is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an electromagnetic rotor pump to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electromagnetic rotor pump, comprising a rotor, wherein an elliptical cavity is formed inside the rotor;

[0007] A stator is fitted inside the elliptical cavity, and the nail is fixed relative to the outer shell;

[0008] The stator has sliding grooves on both sides, and a slider is fitted inside the sliding groove;

[0009] Two sets of one-way valve connectors are installed on one side and the other side of the outer housing. The two sets of one-way valve connectors correspond one-to-one at their axial centers. The two sets of one-way valve connectors on one side correspond to the radial position of a slide groove.

[0010] Preferably, the outer housing includes an outer shell, one end of which is a closed structure and the other end of which is an open structure, with an end cap fitted on one side of the open structure.

[0011] Preferably, the inner wall of the outer shell and the inner wall of the end cap are integrally formed with a boss structure.

[0012] Preferably, the inner side of the boss structure is fitted with a locating pin, and the locating pin is inserted into the outer wall of the stator.

[0013] Preferably, two sets of silent sliding bearings are assembled at the outermost positions on both radial sides of the rotor. The outermost parts of the silent sliding bearings are tightly fitted to the inner walls of the outer shell and the end cover, respectively, at the periphery of the boss structure.

[0014] Preferably, the outer wall of the boss structure is fitted with a rotating shaft lip seal.

[0015] Preferably, the slider has an integrally formed slide bar on the outside, a slide channel is provided inside the slide groove, and a wear-resistant block is assembled at one end of the slide channel.

[0016] Preferably, the inner wall of the housing is fitted with an excitation winding, and the outside of the rotor is provided with a winding coil.

[0017] Preferably, the maximum width of the stator is less than the length of the minor axis of the elliptical cavity.

[0018] Preferably, the inner wall of the boss structure and the outer wall of the slider are both provided with a sintered wear-resistant coating.

[0019] Compared with existing technologies, the beneficial effects of this invention are as follows: The electromagnetic rotor pump proposed in this invention generates torque through the interaction of a magnetic field and the induced current in the windings, causing the rotor to rotate and simultaneously driving the slider to slide along the slide rail and the elliptical inner hole of the rotor. The stator and slider are located in a closed cavity, and the movement of the slider changes the sealed cavity. When liquid medium enters from the inlet of the one-way valve connector, the pressure changes periodically due to the change in the sealed cavity. When the pressure rises to the peak, it can flow out through the one-way valve connector at the outlet, generating pressurized liquid medium for lubrication or transmission. This effectively solves the problem that current hydraulic power components are mostly driven by fuel engines or electric motors, which occupy a large space, have poor economic efficiency, are inflexible in installation, and are not conducive to the coordinated development of automation and intelligence. This invention has better economic efficiency, reduces space occupation, is more conducive to installation and layout, improves work efficiency, and makes it easier to achieve intelligent requirements. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is an explosion illustration of the present invention. Figure 1 ;

[0022] Figure 3 This is an explosion illustration of the present invention. Figure 2 ;

[0023] Figure 4 This is an explosion illustration of the present invention. Figure 3 ;

[0024] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point a;

[0025] Figure 6 This is an explosion illustration of the present invention. Figure 4 ;

[0026] Figure 7 This is the front view of the present invention;

[0027] Figure 8 for Figure 7 Diagram from the perspective of AA (Anti-Aggressive)

[0028] Figure 9 for Figure 7 Diagram from the perspective of a mid-BB (Black and White) unit;

[0029] Figure 10 This is a right view of the present invention;

[0030] Figure 11 for Figure 10 Diagram from a mid-CC perspective;

[0031] Figure 12 for Figure 10 Schematic diagram from the perspective of DD;

[0032] Figure 13 This is the left view of the present invention;

[0033] Figure 14 for Figure 13 Diagram from the perspective of EE.

[0034] In the diagram: 1. One-way valve connector, 2. Housing, 3. Rotary shaft lip seal ring, 4. Silent sliding bearing, 5. Rotor, 6. Slider, 7. Stator, 8. End cover, 9. Elliptical cavity, 10. Slide groove, 11. Slide bar, 12. Wear-resistant block. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0036] Please see Figure 1-14 The present invention provides a technical solution: an electromagnetic rotor pump, including a rotor 5, wherein an elliptical cavity 9 is provided inside the rotor 5;

[0037] The stator 7 is fitted inside the elliptical cavity 9, and the nail 7 is fixed relative to the outer shell;

[0038] The stator 7 has sliding grooves 10 on both sides, and a slider 6 is sleeved inside the sliding grooves 10;

[0039] Two sets of one-way valve connectors 1 are installed on one side and the other side of the outer housing. The two sets of one-way valve connectors 1 correspond one-to-one at their axial centers. The two sets of one-way valve connectors 1 on one side correspond to the radial position of a slide groove 10.

[0040] The one-way valve connector 1 is axially aligned, mainly to facilitate the two areas separated by the stator 7 and the elliptical cavity 9. During rotation, the pressure changes in the two curved triangular areas between the inner wall of the elliptical cavity 9 and the outer wall of the stator 7 and the inner and outer walls of the slider are achieved, thereby changing the liquid pressure. The one-way valve connector 1 is axially aligned, which is more conducive to the change of the input and output position of the medium.

[0041] In addition to the corresponding docking method, the shaft positions of the one-way valve connector 1 can also be sampled based on the peak pressure point of the cavity pressure between the slider 6 and the stator 7, and set at the position with the greatest pressure change, which is beneficial to the efficiency of medium input and output.

[0042] The electromagnetic rotor pump proposed in this invention generates torque through the interaction of a magnetic field and the induced current in the windings, causing the rotor 5 to rotate. Simultaneously, it drives the slider 6 to slide along the slide rail and the elliptical inner hole of the rotor. The stator 7 and slider 6 are located within a closed cavity. The movement of slider 6 changes the sealed cavity. When liquid medium enters from the inlet of the one-way valve connector 1, the pressure changes periodically due to the change in the sealed cavity. When the pressure rises to a peak, it flows out through the one-way valve connector 1 at the outlet, generating pressurized liquid medium for lubrication or transmission. This effectively solves the problem that current hydraulic power components are mostly driven by fuel engines or electric motors, which occupy a large space, are economical, inflexible in installation, and hinder the coordinated development of automation and intelligence. This pump offers better economy, reduces space occupation, is more conducive to installation and layout, improves work efficiency, and more easily achieves intelligent requirements.

[0043] Specifically, the outer casing includes an outer shell 2, one end of which is a closed structure and the other end is an open structure. An end cap 8 is installed on one side of the open structure. The electromagnetic rotor pump described in this scheme has two liquid inlets on the outer shell 2 (with a sealing side plate) and two liquid outlets on the end cap 8. Both the liquid inlets and outlets are equipped with one-way valve connectors 1. Due to the one-way restriction effect of the one-way valve connector 1, when the gap between the slider 6 and the slide groove 10 on one side of the one-way valve connector 1 increases, the pressure at the output end of the one-way valve connector 1 located at one end of the outer shell 2 can be reduced, thereby driving the medium to be input from the outside of the one-way valve connector 1. As the rotor 5 rotates, when the squeeze slider moves outward, the gap between the slider 6 and the slide groove 10 shrinks, which can increase the internal pressure of the one-way valve connector 1 on one side of the end cap 8. Due to the increase in pressure, the pressure of the medium cannot be released outward from the internal one-way structure on one side of the outer shell 2, so it can only be released through the outside of the one-way valve connector 1 on one side of the end cap 8, thus forming a periodic medium transmission effect.

[0044] Specifically, the inner walls of the outer casing 2 and the end cap 8 are integrally formed with boss structures for mounting the silent sliding bearing 4 and the rotary shaft lip seal ring 3. The end face of the central boss is provided with a sintered wear-resistant coating to ensure a seal during the reciprocating sliding of the slider and prevent leakage.

[0045] Specifically, the inner side of the boss structure is equipped with a positioning pin, and the positioning pin is inserted into the outer wall of the stator 7 to ensure that the position between the outer shell 2, the end cover 8 and the stator 7 will not change. Therefore, when the external rotor 5 rotates, it can drive the slider 6 to slide passively inside the slide groove 10.

[0046] Specifically, two sets of silent sliding bearings 4 are installed at the outermost radial positions of the rotor 5. The outermost sides of the silent sliding bearings 4 are tightly fitted to the inner walls of the housing 2 and the end cover 8, respectively, at the outer periphery of the boss structure. The silent sliding bearings 4 can be of two types: roller bearings or thrust bearings. When using roller bearings, the inner wall of the roller bearing is fixed to the outside of the stator 7, and the outer wall of the roller bearing is fixed to the inner wall of the housing 2. When using thrust bearings, one end of the bearing is fixed to the outer side wall of the rotor 5, and the other end of the thrust bearing is assembled to the inner side wall of the housing 2 and the inner wall of the end cover 8, at the outer periphery of the boss structure. The two types of bearings are suitable for different application scenarios. Thrust bearings are mainly used in scenarios where the shaft is vertical, while roller bearings can be used in scenarios where the shaft is offset or horizontal.

[0047] Specifically, a rotating shaft lip seal 3 is fitted to the outer wall of the boss structure. The outer ring of the rotating shaft lip seal 3 slides and seals the inner edge of the rotor, located inside the outer side of the elliptical cavity 9, and the rotating shaft lip seal 3 is fixedly sealed to the outer ring of the boss structure.

[0048] Specifically, the slider 6 has an integrally formed slide bar 11 on the outside, and a slide channel is opened inside the slide groove 10. A wear-resistant block 12 is installed at one end of the slide channel. The wear-resistant block 12 is fixed to the outer edge of the inner end of the slide channel and is diagonally arranged to ensure that when the slider 6 is rotated to move, the rotation can drive the slider 6 to run according to the restricted position, so as to avoid the disorder of the movement trajectory of the slider 6 causing the medium transmission pressure to be disordered and damaging the equipment.

[0049] Specifically, the inner wall of the outer casing 2 is equipped with an excitation winding, and the outer side of the rotor 5 is equipped with a winding coil. In this scheme, the electromagnetic rotor pump generates torque by the interaction between the magnetic field and the induced current in the winding, causing the rotor to rotate. At the same time, it drives the slider to slide along the slide rail and the inner hole of the rotor. Alternatively, a single winding magnetic group uniformly arranged on the inner wall of the outer casing can be used, and the protrusion on the outside of the rotor 5 can be replaced with a permanent magnet. This facilitates the intermittent rotational change of the magnetic resistance of the single winding, driving the permanent magnet to rotate. Both of these schemes can ensure that after observing the outer casing 2 with a wire, the coil can be powered in a fixed manner to provide the effect of rotor 5 rotation, which is beneficial for sealing and driving, and is more conducive to the reduction of structure.

[0050] Specifically, the maximum width of the stator 7 is less than the length of the minor axis of the elliptical cavity 9. The rotation of the rotor 5 locked by the elliptical cavity 9 will continuously change. When the minor axis of the ellipse rotates to the outside of the slider 6, the slider 6 will be restricted to slide inward along the elliptical track, reducing the gap between the slider 6 and the stator 7, and driving the slider 6 and the stator 7 to approach a circular structure. As the elliptical cavity 9 continues to rotate, the position of the minor axis will squeeze the position of the slide groove 10 between the slider 6 and the stator 7, thereby driving the slider 6 to extend outward and increasing the gap between the slider 6 and the stator 7.

[0051] After the slider 6 and stator 7 are fully closed, the longest distance on the outer wall of the slider 6 is greater than the minor axis of the elliptical cavity 9. After rotating to the position of the minor axis of the elliptical cavity 9 and reaching the longest distance outside the slider 6, the slider 6 can be prevented from getting stuck inside the elliptical cavity 9 by squeezing and sliding the slider 6 towards the major axis of the elliptical cavity 9, thereby achieving the purpose of periodic change of the slider 6.

[0052] Specifically, the inner wall of the boss structure and the outer wall of the slider are both provided with sintered wear-resistant coatings. The slider 6 can be made of different materials according to the application conditions to provide different wear resistance, service life and different pressure liquid media. The contact positions between the inner wall of the slide groove 10 and the inner wall of the slider 6, and between the slide and the slide bar 11 are all reduced by machining the roughness or by spraying sintered coatings to reduce friction loss and improve service life.

[0053] The electromagnetic rotor pump in this solution has a simple structure and offers excellent cost-effectiveness compared to the current mainstream solution of adding a motor and hydraulic pump. It is also compact, occupies little space, and is easier to install. Furthermore, this structure consumes less energy, has higher efficiency, conforms to lightweight design, and is easier to install various sensing and monitoring sensors, which facilitates intelligent control and analysis and improves the intelligentization process.

[0054] The casing, rotor, and stator described in this solution can have various shapes and types. The core principle is to directly apply the torque converted from electrical energy to the rotor, providing rotational power and causing changes in the closed cavity within the pump to generate a pressurized liquid medium for the required operating conditions. Here, the stator and rotor are just one type of rotary pump; they can also be configured as vane pumps, piston pumps, gear pumps, and many other types.

[0055] 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. An electromagnetic rotor pump, comprising a rotor (5), characterized in that: The rotor (5) has an elliptical cavity (9) inside; a stator (7) is sleeved inside the elliptical cavity (9), and the stator (7) is fixed relative to the outer shell; a sliding groove (10) is opened on both sides of the stator (7), and a slider (6) is sleeved inside the sliding groove (10); the maximum width of the stator (7) is less than the short axis length of the elliptical cavity (9), and after the slider (6) and the stator (7) are completely closed, the slider (6) and the stator (7) approach a circular structure, and the longest distance of the outer wall of the slider (6) is greater than the short axis of the elliptical cavity (9). Two sets of one-way valve connectors (1) are installed on one side and the other side of the outer shell, and the two sets of one-way valve connectors (1) correspond one-to-one at the axis. The two sets of one-way valve connectors (1) set on one side correspond to the radial position of a sliding groove (10). The slider (6) has an integrally formed slide bar (11) on the outside and a slide channel (10) is provided inside. A wear-resistant block (12) is installed at one end of the slide channel. The wear-resistant block (12) is fixed to the outer edge of the inner end of the slide channel and is set diagonally to ensure that when the slider (6) is rotated to move, the rotation action can drive the slider (6) to run according to the restricted position.

2. The electromagnetic rotor pump according to claim 1, characterized in that: The outer casing includes an outer shell (2), one end of which is a closed structure and the other end of which is an open structure, and an end cap (8) is fitted on one side of the open structure.

3. An electromagnetic rotor pump according to claim 2, characterized in that: The inner wall of the outer shell (2) and the inner wall of the end cap (8) are both integrally formed with a boss structure.

4. An electromagnetic rotor pump according to claim 3, characterized in that: The inner side of the boss structure is fitted with a positioning pin, and the positioning pin is inserted into the outer wall of the stator (7).

5. An electromagnetic rotor pump according to claim 3, characterized in that: Two sets of silent sliding bearings (4) are assembled at the outermost positions of the radial sides of the rotor (5). The outermost sides of the silent sliding bearings (4) are tightly attached to the inner walls of the outer shell (2) and the end cover (8), respectively, at the outer periphery of the boss structure.

6. An electromagnetic rotor pump according to claim 3, characterized in that: The outer wall of the boss structure is fitted with a rotating shaft lip seal (3).

7. An electromagnetic rotor pump according to claim 2, characterized in that: The inner wall of the outer casing (2) is equipped with an excitation winding, and the outer side of the rotor (5) is provided with a winding coil.

8. An electromagnetic rotor pump according to claim 3, characterized in that: The inner wall of the boss structure and the outer wall of the slider are both provided with a sintered wear-resistant coating.

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