Magnetic fluid coupling levitation mechanical pump with integrated rotor

Abstract

This invention proposes a magnetic-hydraulic coupled suspension mechanical pump with an integrated rotor, comprising: an impeller assembly, an end cover, a housing, and a rotor assembly; the housing has a recessed inner cavity in its central region; the rotor assembly is installed within the inner cavity; the impeller assembly's shaft is connected to the rotor assembly and is integrally formed with it; the end cover comprises a first split end cover and a second split end cover formed radially, the first split end cover and the second split end cover being radially mounted on the shaft. This invention significantly improves the product's structural stability, dynamic balance performance, and production efficiency by integrally molding the shaft and rotor assembly, and avoids the structural interference problem caused by the traditional end cover requiring insertion from the shaft end.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical pump technology, and specifically relates to a magnetic fluid coupling suspension mechanical pump with an integrated rotor. Background Technology

[0002] Existing hydraulic-magnetic coupling levitation mechanical pumps typically employ a design with a flow channel between the shaft core and the magnet rotor to achieve rotor levitation. This requires the shaft core to be designed as a flat shaft to create a gap or channel for liquid flow between the shaft core and the bushing. In this structure, the shaft core and bushing are two independent components. The bushing and magnet rotor are integrally molded using in-mold injection molding, while the shaft core is fixed inside the bushing via an interference fit or other connection method. However, this traditional structure has the following significant drawbacks: because the shaft core, bushing, and magnet rotor cannot be integrally molded and must be manufactured separately before assembly, the overall structural complexity increases. This not only increases the number of parts but also raises mold development costs and material management difficulties, thereby increasing the overall manufacturing cost. Furthermore, the connection between the shaft core and bushing relies on interference fits or other precision assembly processes, requiring extremely high machining accuracy. If machining errors exceed the allowable range, assembly difficulties or even failures will occur, affecting product yield.

[0003] In summary, existing hydraulic-magnetic coupling suspended mechanical pumps have significant shortcomings in terms of structural design and manufacturing process, and there is an urgent need for a new structure to simplify the structure, reduce manufacturing costs, and improve assembly efficiency and product consistency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a magnetic fluid coupling suspension mechanical pump with an integrated rotor, which solves the problem that in the prior art, the shaft core, bushing and magnetic rotor cannot be integrally formed and must be manufactured separately and then assembled, which leads to an increase in the complexity of the overall structure, not only increasing the number of parts, but also increasing the cost of mold development and the difficulty of material management, thus driving up the overall manufacturing cost; and the connection between the shaft core and bushing depends on interference fit or other precision assembly processes, which requires extremely high machining accuracy. Once the machining error exceeds the allowable range, it will lead to assembly difficulties or even failure, affecting the product yield.

[0005] To achieve the above objectives and other related objectives, this utility model proposes a magnetic fluid coupling suspension mechanical pump with an integrated rotor, comprising: an impeller assembly, an end cover, a housing, and a rotor assembly;

[0006] The central area of ​​the casing is recessed to form an inner shell cavity;

[0007] The rotor assembly is installed inside the inner shell cavity;

[0008] The impeller assembly's shaft is connected to the rotor assembly, and the impeller assembly and the rotor assembly are an integral structure;

[0009] The end cap comprises a first split end cap and a second split end cap formed by radial division, and the first split end cap and the second split end cap are radially mounted on the wheel axle.

[0010] In one embodiment of the present invention, a flow channel is formed on the rotor assembly, the flow channel passing through the rotor assembly axially and arranged circumferentially around the axle.

[0011] In one embodiment of the present invention, the axle is a flat shaft structure, which includes a planar portion, and there is a gap between the planar portion and the inner surface of the rotor assembly to form the flow channel.

[0012] In one embodiment of the present invention, a plurality of through holes are provided on the plastic coating of the rotor assembly to form the flow channel. The plurality of through holes penetrate the rotor assembly axially and are arranged circumferentially around the axle.

[0013] In one embodiment of this utility model, the axle is a plastic axle, which is integrally injection molded with the plastic-coated part of the rotor assembly to form an integral structure; or the axle is a metal axle, and the plastic-coated part of the rotor assembly is injection molded with the metal axle as an insert to form an integral structure.

[0014] In one embodiment of the present invention, the first split end cap and the second split end cap are provided with mutually cooperating fixing structures on their dividing surfaces, and the first split end cap and the second split end cap are fixedly connected by the fixing structures.

[0015] In one embodiment of this utility model, the fixing structure is a mechanical snap-fit ​​structure consisting of an interference fit between a protrusion and a groove or a mutually engaging protrusion and groove.

[0016] In one embodiment of the present invention, the first split end cap and the second split end cap are fixedly connected by adhesive.

[0017] In one embodiment of the present invention, a plurality of positioning posts and corresponding positioning holes are respectively provided on the dividing surfaces of the first split end cap and the second split end cap, and the positioning posts are inserted into the positioning holes to achieve assembly alignment.

[0018] In one embodiment of this utility model, the first split end cap and the second split end cap are respectively fixedly connected to the housing.

[0019] This utility model proposes a hydromagnetic coupling suspension mechanical pump with an integrated rotor, aiming to solve the problems of complex assembly, numerous parts, high manufacturing costs, and poor product consistency caused by the separate structure of the impeller assembly and rotor assembly in the prior art. By designing the wheel shaft and rotor assembly as an integrated unit, and optionally also making the impeller an integrated structure, the structural stability, dynamic balance performance, and production efficiency of the product are significantly improved. Specifically, it has the following technical effects:

[0020] This invention features an integrated shaft and rotor assembly, eliminating the need for interference fits or mechanical connections between the shaft core and bushing in traditional suspension pumps. Furthermore, by integrally molding the impeller and shaft, a complete, one-piece rotor structure is formed, reducing the number of parts, avoiding complex assembly processes, and significantly lowering the assembly defect rate caused by machining errors, thereby improving product consistency and yield. In short, this invention simplifies the structure and significantly reduces assembly difficulty.

[0021] The one-piece molded structure of this invention avoids dynamic imbalance problems caused by asymmetry or looseness between multiple components. It is particularly suitable for hydraulic-magnetic coupling suspension mechanical pumps operating at high speeds, effectively improving the stability and lifespan of the equipment. In other words, this invention can significantly improve dynamic balance performance and operational stability.

[0022] This invention employs a split end cap structure, wherein the end cap is radially divided into a first split end cap and a second split end cap, which are respectively fitted onto the impeller assembly shaft from both sides and spliced ​​together to form a complete end cap, enabling the impeller assembly and rotor assembly to be integrally formed. This structure avoids the structural interference problem caused by the traditional end cap needing to be inserted from the shaft end, allowing the impeller and rotor to be integrally inserted into the housing for assembly, significantly reducing assembly complexity and the requirements for machining accuracy. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0024] Figure 1 This is a schematic diagram of the structure of a suspension pump in one embodiment of the present invention.

[0025] Figure 2 This is a cross-sectional schematic diagram of an integrally formed rotor in a suspension pump according to one embodiment of the present invention.

[0026] Figure 3This is a schematic diagram of the flow channel in one embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the flow channel in another embodiment of the present invention.

[0028] Figure 5 This is a cross-sectional schematic diagram of an integrally formed rotor in another embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the split end cap structure in one embodiment of the present invention.

[0030] Label Explanation:

[0031] 10. Impeller assembly; 20. End cover; 30. Casing; 40. Rotor assembly; 11. Shaft; 12. Impeller; 121. Connecting shaft; 21. First split end cover; 22. Second split end cover; 401. Flow passage; 50. Pump cover. Detailed Implementation

[0032] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0034] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0035] Please see Figures 1 to 6As shown, this utility model provides a magnetic-hydraulic coupled suspension mechanical pump with an integrated rotor, addressing the significant shortcomings in the structural design and manufacturing process of existing magnetic-hydraulic coupled suspension mechanical pumps. Specifically, the magnetic-hydraulic coupled suspension mechanical pump includes: an impeller assembly 10, an end cover 20, a housing 30, and a rotor assembly 40. The housing 30 has an inwardly recessed central region forming an inner cavity to accommodate and support the rotor assembly 40. The rotor assembly 40 is installed within the inner cavity and achieves suspension operation through magnetic-hydraulic coupling. The impeller assembly 10 is connected to the rotor assembly 40 and rotates synchronously with it, thereby realizing the liquid transport function.

[0036] Please see Figure 1 and Figure 2 As shown, the impeller assembly 10 includes a shaft 11 and an impeller 12. The impeller 12 is fixedly connected to one end of the shaft 11. At least the shaft 11 and the rotor assembly are integrally formed, making the shaft 11 and the rotor assembly 40 a single unit. This integral design eliminates the interference fit or mechanical connection structure between the shaft core and the bushing in traditional suspension pumps, avoiding complex assembly steps and improving production efficiency and product consistency. Furthermore, since the shaft 11 and the rotor assembly 40 are integrally formed, there is no need for additional assembly between the shaft core and the bushing, eliminating the traditional bushing structure and significantly reducing the number of parts and assembly difficulty.

[0037] Please see Figure 1 and Figure 2 As shown, in this embodiment, the impeller 12 and the shaft 11 are also integrally formed, meaning that the impeller 12 and the shaft 11 are directly formed from the same material in the same mold or process, forming a single integral structure. For example, this can be achieved through precision injection molding, powder injection molding, or integrated metal casting. This design enhances the connection strength between the impeller and the shaft, significantly improving the overall dynamic balance performance and operational stability of the rotor. Furthermore, since the impeller 12, shaft 11, and rotor assembly 40 can all be integrally formed, there is no need for additional assembly of multiple components, significantly reducing the number of parts and assembly difficulty. This also reduces the assembly defect rate caused by processing errors, improving product yield and production capacity.

[0038] Please see Figure 5As shown, in another embodiment, the impeller 12 and the shaft 11 are separate structures to adapt to different production processes, material combinations, or maintenance and replacement needs. Specifically, the bottom surface of the impeller 12 is provided with a hollow connecting shaft 121, and one end of the shaft 11 is inserted into the connecting shaft 121 and fixedly connected by fasteners, interference fits, bonding, welding, or laser welding. In a specific embodiment, the inner wall of the connecting shaft 121 is provided with a keyway or threaded structure, and the outer circumference of the shaft 11 is correspondingly provided with a matching key or external thread, thereby achieving torque transmission while enhancing the reliability of the connection. This separate connection structure provides greater manufacturing flexibility and convenience for later maintenance while ensuring connection strength, and is suitable for application scenarios that require impeller replacement, head adjustment, or adaptation to different media conditions.

[0039] Please see Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, a flow channel 401 is formed on the rotor assembly. The flow channel 401 extends axially through the entire rotor assembly and is arranged uniformly or non-uniformly around the axle 11 circumferentially. This flow channel 401 guides the flow of liquid, thereby achieving stable levitation of the rotor during the hydromagnetic coupling process. For example, the axle 11 is a flat shaft structure, including a planar portion. A certain radial gap exists between the planar portion and the inner surface of the rotor assembly 40, which constitutes the flow channel 401. Since the axle 11 is a flat shaft structure, such as an ellipse or D-shape, a continuous or discontinuous fluid channel space is naturally formed between its outer circle and the inner hole of the rotor assembly 40. This space can serve as the liquid circulation path required for hydromagnetic levitation. This structure achieves the integral molding of the axle and the magnet rotor without changing the traditional flat shaft design concept, while also meeting the requirements of hydromagnetic levitation.

[0040] Please see Figure 2 , Figure 3 and Figure 4 As shown, the flow channel 401 is achieved by creating multiple through holes in the plastic-coated part of the rotor assembly. These through holes axially penetrate the rotor assembly and are arranged in a ring or asymmetrical pattern around the axle 11 circumferentially. The through holes are formed using a mold core-pulling process or subsequent machining, and their number can be adjusted according to flow requirements, for example, four, six, or more, to meet different operating conditions. The advantage of this structure is that the flow channel design can be achieved without relying on the axle's shape, allowing the axle to adopt a standard circular structure, which is beneficial for improving dynamic balance performance. Simultaneously, this method facilitates control over the channel size, direction, and distribution density, increasing design flexibility.

[0041] It is understood that the cross-sectional shape of the flow channel 401 can be any one or a combination of circular, elliptical, polygonal (such as rectangular, hexagonal) or fan-shaped, and the optimal shape is selected according to the actual fluid dynamics simulation results in order to optimize fluid flow efficiency and suspension stability.

[0042] Please see Figure 2 As shown, in this embodiment, the axle 11 can be a plastic axle made of plastic material, such as polyphenylene sulfide (PPS), nylon (PA), or polyethylene terephthalate (PET), which are engineering plastics with corrosion resistance, self-lubrication, and a certain strength. The axle 11 and the plastic-coated part of the rotor assembly 40 are integrally formed by injection molding, which has the advantages of reducing overall weight, improving corrosion resistance, and reducing manufacturing costs. Of course, the axle 11 can also be made of metal materials with certain strength and wear resistance, such as stainless steel, carbon steel, or ceramic-coated metal. During the manufacturing process, the metal axle is placed in the mold as an insert, and the plastic-coated part is firmly bonded to the axle 11 through insert injection molding to form an integral structure. Furthermore, the surface of the metal axle can also be provided with grooves, knurling, or other structures to enhance the bonding force, thereby improving the adhesion strength between the injection molding material and the metal, giving it higher mechanical strength and wear resistance, and meeting the requirements of high torque or heavy load conditions.

[0043] Please see Figure 1 As shown, this utility model also includes a pump cover 50, which has an inlet and an outlet pipe. The internal space serves as a pump chamber, and the inlet and outlet pipes are respectively connected to the pump chamber. The pump cover 50 is made of high-strength aluminum alloy or engineering plastic, and its surface is precision machined to ensure the fitting accuracy with the end cover 20 and the housing 30. A sealing groove is provided on the pump cover 50, and a sealing ring is placed in the sealing groove. The pump cover 50 and the housing 30 are fastened with screws to form a compression seal on the sealing ring, ensuring the sealing performance between the end cover 20 and the pump cover 50 and preventing liquid leakage.

[0044] Please see Figure 1 As shown, the end cover 20 is fitted onto the wheel shaft 11 and located between the pump cover 50 and the housing 30. The end cover 20 has a circumferential hole and a central hole. The central hole is used to connect with the impeller assembly, and the circumferential hole communicates with the pump chamber, forming a fluid channel to ensure that the low-pressure liquid in the pump chamber can enter the inner housing cavity to provide hydraulic pressure for the rotor assembly. The end cover is made of high-strength aluminum alloy, and its surface is precision machined to ensure a precise fit with the pump cover and housing.

[0045] In summary, this utility model significantly improves the structural stability, dynamic balance performance, and production efficiency of the product by integrating the wheel shaft and rotor assembly into a single molding design, and optionally also integrating the impeller into a single structure.

[0046] Please see Figure 1 , Figure 2 and Figure 6 As shown, it is understandable that existing end cover designs cannot achieve assembly when the impeller assembly and rotor are integrally formed. Therefore, a new end cover design is proposed to solve the problem that existing end cover designs prevent the impeller assembly and rotor from being integrally formed, resulting in the impeller assembly and rotor being fixed by interference fit or other connection methods. Compared with the integral rotor of traditional non-suspended pumps, this increases the structural complexity, increases material costs, and adds an extra connection process. Furthermore, the connection efficiency is affected by the machining accuracy, resulting in certain yield problems, which in turn affect cost and production capacity. Therefore, in this embodiment, the end cover 20 adopts a split structure formed by radial division, specifically including a first split end cover 21 and a second split end cover 22. The first split end cover 21 and the second split end cover 22 are respectively installed radially from both sides of the shaft onto the wheel shaft 11 of the impeller assembly 10, and are spliced ​​together to form a complete end cover structure after assembly. The split end cap design eliminates the need to insert the impeller assembly 10 into the inner hole of the rotor assembly 40 during assembly, and also eliminates the need to fit the end cap onto the shaft core before installing the impeller assembly. This avoids the problem of structural interference preventing integrated molding, allowing the impeller assembly 10 and rotor assembly 40 to be integrally molded. It also eliminates the need for the shaft sleeve in traditional structures. Compared to traditional structures, this invention reduces the number of parts, avoids complex assembly processes, and significantly reduces the assembly defect rate caused by processing errors, thereby improving product consistency and yield. In short, this invention simplifies the structure and significantly reduces assembly difficulty.

[0047] Please see Figure 1 , Figure 2 and Figure 6 As shown, during the assembly process, since the impeller assembly 10 and the rotor assembly 40 are integrally formed, they can be directly inserted into the housing 30. The two separate parts of the end cover 20 are then radially fitted onto the shaft from both sides, completing the end cover installation. Compared to the prior art, which requires first fitting the end cover onto the shaft core before assembling the impeller and rotor, this invention eliminates the connection process between the impeller and rotor, reducing assembly difficulty and machining accuracy requirements. It is understood that by designing the end cover as a radially separate structure, this invention allows the impeller assembly and rotor to be integrally formed, effectively solving the problems of complex structure, cumbersome assembly, high cost, and low yield caused by the end cover structure limitations in existing hydraulic-magnetic coupling suspension mechanical pumps. This invention has good application prospects and promotional value.

[0048] Please see Figure 1 , Figure 2 and Figure 6As shown, in this embodiment, to ensure that the first split end cap 21 and the second split end cap 22 can be securely connected together and to guarantee their stability during use, the present invention provides mutually cooperating fixing structures on the dividing surfaces of the first split end cap 21 and the second split end cap 22. The first split end cap 21 and the second split end cap 22 are fixedly connected by the fixing structures. These fixing structures can take various forms to meet the needs of different application scenarios.

[0049] Please see Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the fixing structure includes multiple protrusions and multiple corresponding grooves. The protrusions are formed on the dividing surface of the first split end cap 21, and the grooves are formed on the dividing surface of the second split end cap 22. The two are connected by an interference fit. This structure not only enhances the connection strength but also improves the assembly accuracy and prevents relative displacement of the split end caps during operation.

[0050] In another embodiment, the fixing structure can also be configured as multiple buckles and multiple corresponding slots that are mutually engaged and fixed. The buckles are formed on the dividing surface of the first split end cap, and the slots are formed on the dividing surface of the second split end cap. During assembly, the two split end caps can be automatically engaged simply by aligning them together, thereby achieving rapid assembly.

[0051] In another embodiment, the first split end cap 21 and the second split end cap 22 can also be fixedly connected by adhesive. For example, a high-strength, corrosion-resistant industrial adhesive, such as epoxy resin or polyurethane adhesive, can be used. After applying the adhesive to the mating surfaces of the two split end caps, they are pressed radially and cured. To enhance the bonding effect, a rough texture or microporous structure can be provided on the mating surfaces to increase the bonding area and adhesion.

[0052] To further improve the assembly precision between the first split end cap 21 and the second split end cap 22, and to ensure that they can be quickly and accurately aligned and maintain a stable connection during the docking process, this invention also provides a positioning structure on the dividing surface of the first split end cap 21 and the second split end cap 22. The positioning structure includes multiple positioning posts and multiple corresponding positioning holes. The positioning posts are formed on the dividing surface of the first split end cap 21; the positioning holes are opened on the dividing surface of the second split end cap 22, and correspond one-to-one with the positions of the positioning posts. During assembly, the first split end cap 21 and the second split end cap 22 are radially docked, allowing the positioning posts to be inserted into the corresponding positioning holes, thereby achieving precise alignment and limiting of the two. This structure allows operators to complete the docking of the end caps without repeatedly adjusting the angle or position, improving assembly efficiency and preventing misalignment or poor contact of the fixing structure due to assembly offset, thus enhancing connection stability. It can also be used in conjunction with the aforementioned protrusion-groove, snap-fit, and adhesive fixing methods to jointly ensure the overall connection performance of the end caps. Preferably, the positioning post and the positioning hole adopt a clearance fit or a slight interference fit, which facilitates insertion and prevents loosening. In addition, a guide bevel or chamfer structure can be provided on the outer periphery of the positioning post according to actual needs to further improve the smoothness of assembly.

[0053] In some other embodiments, the first split end cap 21 and the second split end cap 22 may not be assembled into a single structure, but may be fixedly connected to the housing 30 respectively. The first split end cap 21 and the second split end cap 22 can be fixedly connected to the housing 30 in various ways, such as interference fit connection, adhesive connection, or bolt connection. For example, the outer edges of the first split end cap 21 and the second split end cap 22 are provided with flange structures with certain dimensional tolerances, and the flange structures are tightly fitted with the mounting holes on the housing 30 by interference fit. Alternatively, the first split end cap 21 and the second split end cap 22 are provided with a plurality of mounting holes; correspondingly, the housing 30 is also provided with matching threaded holes or through holes; the end caps are firmly fixed to the housing 30 by bolts or other fasteners.

[0054] Understandably, to ensure that the first split end cap 21 and the second split end cap 22 can be accurately installed into their predetermined positions on the housing 30, and to avoid poor sealing or structural loosening due to assembly deviations, this invention also provides a positioning structure between the end caps and the housing 30. Specifically, positioning protrusions are provided on the first split end cap 21 and the second split end cap 22; positioning grooves are provided at corresponding positions on the housing 30; during assembly, the positioning protrusions are inserted into the positioning grooves, thereby achieving rapid positioning and limiting between the end caps and the housing. This structure can improve assembly accuracy, prevent end cap misalignment, enhance connection stability, and prevent displacement during operation.

[0055] Please see Figure 1 , Figure 2 and Figure 6 As shown, the pump cover is fixed to the top of the housing 30, and together with the housing 30, clamps and fixes the first split end cover 21 and the second split end cover 22. Specifically, the pump cover 50 is fixedly installed on the top of the housing 30 by screws, clips, etc., and a clamping space is formed between the pump cover 50 and the housing 30 to press and fix the upper area of ​​the end cover 20; this clamping structure can further enhance the overall stability of the end cover and prevent it from loosening or falling off during pump operation.

[0056] In summary, this utility model solves the problems of complex assembly, large number of parts, high manufacturing cost and poor product consistency caused by the separate structure of impeller assembly and rotor assembly in the prior art. By designing the wheel shaft and rotor assembly as an integral molding, and optionally also making the impeller an integral structure, it significantly improves the structural stability, dynamic balance performance and production efficiency of the product.

[0057] This invention integrates the impeller assembly's shaft core and the rotor assembly's inner bore during manufacturing, eliminating the need for traditional interference fits and bushing installations. This simplifies the structure, improves overall strength and reliability, and avoids defective products caused by assembly errors. It employs a split end cap structure, with the end cap radially divided into a first split end cap and a second split end cap. These are respectively fitted onto the impeller assembly's shaft from both sides and joined together to form a complete end cap. This allows for the integrated molding of the impeller assembly and rotor assembly. This structure avoids the structural interference problems caused by traditional end caps requiring insertion from the shaft end, enabling the impeller and rotor to be integrally inserted into the housing for assembly. This significantly reduces assembly complexity and the requirements for machining precision.

[0058] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A magnetic-hydraulic coupled suspension mechanical pump with an integrated rotor, characterized in that, include: Impeller assembly, end cover, housing and rotor assembly; The central area of ​​the casing is recessed to form an inner shell cavity; The rotor assembly is installed inside the inner shell cavity; The impeller assembly's shaft is connected to the rotor assembly, and the impeller assembly and the rotor assembly are an integral structure; The end cap comprises a first split end cap and a second split end cap formed by radial division, and the first split end cap and the second split end cap are radially mounted on the wheel axle.

2. The magnetic-fluid coupled suspension mechanical pump with an integrated rotor according to claim 1, characterized in that, The rotor assembly has a flow passage that extends axially through the rotor assembly and is arranged circumferentially around the axle.

3. The magnetic-fluid coupled suspension mechanical pump with an integrated rotor according to claim 2, characterized in that, The axle is a flat shaft structure, which includes a planar portion, and there is a gap between the planar portion and the inner surface of the rotor assembly to form the flow channel.

4. The magnetic-fluid coupled suspension mechanical pump with an integrated rotor according to claim 2, characterized in that, Multiple through holes are provided on the plastic coating of the rotor assembly to form the flow channel. The multiple through holes penetrate the rotor assembly axially and are arranged circumferentially around the wheel axle.

5. The magnetic-hydraulic coupled suspension mechanical pump with an integrated rotor according to claim 1, characterized in that, The axle is a plastic axle, which is integrally injection molded with the plastic-coated part of the rotor assembly to form an integral structure; or the axle is a metal axle, and the plastic-coated part of the rotor assembly is injection molded with the metal axle as an insert to form an integral structure.

6. The magnetic-hydraulic coupled suspension mechanical pump with an integrated rotor according to claim 1, characterized in that, The first split end cap and the second split end cap are provided with mutually cooperating fixing structures on their dividing surfaces, and the first split end cap and the second split end cap are fixedly connected by the fixing structures.

7. The magnetic-hydraulic coupled suspension mechanical pump with an integrated rotor according to claim 6, characterized in that, The fixing structure is a mechanical snap-fit ​​structure consisting of protrusions and grooves that form an interference fit or interlocking with each other.

8. The magnetic-fluid coupled suspension mechanical pump with an integrated rotor according to claim 1, characterized in that, The first split end cap and the second split end cap are fixedly connected by adhesive.

9. The magnetic-fluid coupled suspension mechanical pump with an integrated rotor according to claim 1, characterized in that, The first split end cap and the second split end cap are respectively provided with multiple positioning posts and corresponding positioning holes on their dividing surfaces. The positioning posts are inserted into the positioning holes to achieve assembly alignment.

10. The magnetic-hydraulic coupled suspension mechanical pump with an integrated rotor according to claim 1, characterized in that, The first split end cap and the second split end cap are respectively fixedly connected to the housing.

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