Miniature magnetic drive pump

Abstract

The utility model provides a miniature magnetic drive pump. The miniature magnetic drive pump comprises a servo motor, a mounting seat, a mounting ring, a magnetic coupling part and a magnetic drive pump head, the mounting seat is fixedly connected with a shell of the servo motor and is provided with a first avoiding hole; the mounting ring is fixedly connected with the mounting base, the side, away from the mounting base, of the mounting ring is sunken to form a containing space, a second receding hole is formed in the side, close to the mounting base, of the mounting ring, and the second receding hole communicates with the containing space; an output shaft of the servo motor penetrates through the first avoiding hole and the second avoiding hole and extends into the accommodating space; the magnetic coupling part is located in the containing space and fixedly connected with an output shaft of the servo motor. The magnetic pump head is fixedly connected with the mounting ring, and a magnetic rotor part of the magnetic pump head extends into the magnetic coupling part. Compared with the prior art, the micro magnetic pump provided by the utility model is higher in quantitative suction precision.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pumps, in particular to a micro magnetic pump. Background Art

[0002] In the production process of cigarettes, micro magnetic pumps are usually used to transport liquid media (such as glue, liquid flavors, etc.). The micro magnetic pump includes a magnetic pump head, a magnetic coupling part, and a motor. The output shaft of the motor is connected to the magnetic coupling part, and the magnetic pump head is provided with a liquid inlet and a liquid outlet. When the motor is working, the output shaft is driven to rotate, which drives the magnetic coupling part to rotate, so that a rotating magnetic field is formed. The rotating magnetic field drives the magnetic rotor of the magnetic pump head to rotate, so that the magnetic pump head works normally, thereby sucking the liquid medium from the liquid inlet to the liquid outlet.

[0003] However, the micro magnetic pump in the prior art is usually driven by a DC speed regulating motor, which has low control accuracy and cannot achieve accurate control of the suction volume and quantitative suction, thereby affecting the product yield in the cigarette production process.

[0004] Therefore, how to provide a new micro magnetic pump to achieve precise control of the suction volume and realize quantitative suction; at the same time, low modification cost, convenient installation, and good sealing effect are technical problems that need to be solved urgently in this field. Utility Model Content

[0005] In view of the above technical problems, the utility model provides a micro magnetic pump, which is driven by a servo motor, has higher control accuracy, can achieve precise control of the suction volume, and realize quantitative suction of liquid medium. At the same time, a mounting seat and a mounting ring are also designed. The mounting seat is connected to the housing of the servo motor, the mounting ring is connected to the mounting seat, and a accommodating space is provided inside the mounting ring. The magnetic coupling part is provided in the accommodating space, and the magnetic pump head is connected to the mounting ring. The overall structure is simple, the installation is convenient, the modification cost is low, and the sealing effect is good.

[0006] A micro magnetic pump comprises a servo motor, a mounting seat, a mounting ring, a magnetic coupling part, and a magnetic pump head;

[0007] The mounting seat is fixedly connected to the housing of the servo motor and is provided with a first avoidance hole;

[0008] The mounting ring is fixedly connected to the mounting seat, and a side of the mounting ring away from the mounting seat is recessed to form an accommodation space, and a side of the mounting ring close to the mounting seat is provided with a second avoidance hole, and the second avoidance hole is communicated with the accommodation space;

[0009] The output shaft of the servo motor passes through the first avoidance hole and the second avoidance hole, and extends into the accommodating space;

[0010] The magnetic coupling portion is located in the accommodating space and is fixedly connected to the output shaft of the servo motor;

[0011] The magnetic pump head is fixedly connected to the mounting ring, and the magnetic rotor portion of the magnetic pump head extends into the magnetic coupling portion.

[0012] Preferably, an output shaft threaded hole is provided at the end of the output shaft;

[0013] The magnetic coupling portion is provided with a stepped mounting hole for screw mounting;

[0014] The magnetic coupling portion is installed at the output shaft threaded hole of the output shaft through the screw.

[0015] Preferably, the magnetic coupling portion comprises a first part and a second part which are connected in sequence;

[0016] The stepped mounting hole is provided on the first portion;

[0017] The second part is provided with a receiving space;

[0018] The magnetic rotor portion of the magnetic pump head extends into the accommodating space.

[0019] Preferably, a positioning ring is protruding outwardly from a surface of the mounting seat on a side close to the mounting ring, and the positioning ring matches the second avoidance hole.

[0020] Preferably, first threaded holes are provided at four end corners of the mounting seat;

[0021] A motor mounting hole is provided on the housing of the servo motor corresponding to each of the first threaded holes;

[0022] The servo motor and the mounting seat are fixedly connected by screws penetrating the motor mounting hole and the first threaded hole.

[0023] Preferably, a plurality of second threaded holes are formed on the mounting seat, and all the second threaded holes are sequentially spaced around the outer side of the positioning ring;

[0024] A countersunk hole is provided on the bottom wall of the mounting ring on one side close to the mounting seat, and the countersunk hole is arranged in a one-to-one correspondence with the second threaded hole;

[0025] The mounting ring and the mounting seat are fixedly connected by countersunk screws penetrating the countersunk holes and the second threaded holes.

[0026] Preferably, the mounting ring is provided with a plurality of third threaded holes;

[0027] All the third threaded holes are centered on the central axis of the mounting ring and are distributed at equal intervals along the circumference of the mounting ring;

[0028] A pump head mounting hole is provided on the mounting plate of the magnetic pump head, and the pump head mounting hole is arranged in a one-to-one correspondence with the third threaded hole;

[0029] The magnetic pump head and the mounting ring are fixedly connected by screws penetrating the pump head mounting hole and the third threaded hole.

[0030] Preferably, a surface of the mounting ring close to the magnetic pump head is concave to form a positioning groove, and the positioning groove matches the mounting disk of the magnetic pump head.

[0031] Preferably, the mounting seat is an aluminum seat.

[0032] Preferably, the mounting ring is a plastic ring.

[0033] Compared with the prior art, the utility model provides a micro magnetic pump, which includes a servo motor, a mounting seat, a mounting ring, a magnetic coupling part, and a magnetic pump head; the mounting seat is fixedly connected to the housing of the servo motor and is provided with a first avoidance hole; the mounting ring is fixedly connected to the mounting seat, and the mounting ring is recessed away from the mounting seat to form a receiving space, and the mounting ring is provided with a second avoidance hole on the side close to the mounting seat, and the second avoidance hole is connected to the receiving space; the output shaft of the servo motor passes through the first avoidance hole and the second avoidance hole, and extends into the receiving space; the magnetic coupling part is located in the receiving space and is fixedly connected to the output shaft of the servo motor; the magnetic pump head is fixedly connected to the mounting ring, and the magnetic rotor part of the magnetic pump head extends into the magnetic coupling part. The servo motor is used in the micro magnetic pump to drive the magnetic coupling part, and the control accuracy is higher, and the precise control of the suction amount can be achieved, and the quantitative suction of the liquid medium can be achieved. In addition, the overall structure is simple, the installation is convenient, and the sealing effect is good. At the same time, the magnetic pump head can use existing components, and only requires additional processing of parts such as the mounting seat, so the modification cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the exploded structure of a micro magnetic pump provided in an embodiment;

[0036] Figure 2 for Figure 1 The schematic diagram of the exploded structure of the micro magnetic pump shown in another angle;

[0037] Figure 3 for Figure 1 The diagram is a schematic diagram of the planar structure of some parts of the micro magnetic pump after cutting. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] It should be noted that when a component is referred to as being "fixed on", "installed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0042] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0043] The utility model provides a micro magnetic pump, which includes a servo motor, a mounting seat, a mounting ring, a magnetic coupling part, and a magnetic pump head; the mounting seat is fixedly connected to the housing of the servo motor and is provided with a first avoidance hole; the mounting ring is fixedly connected to the mounting seat, and the mounting ring is recessed away from the mounting seat to form a receiving space, and the mounting ring is provided with a second avoidance hole on the side close to the mounting seat, and the second avoidance hole is connected to the receiving space; the output shaft of the servo motor passes through the first avoidance hole and the second avoidance hole, and extends into the receiving space; the magnetic coupling part is located in the receiving space and is fixedly connected to the output shaft of the servo motor; the magnetic pump head is fixedly connected to the mounting ring, and the magnetic rotor part of the magnetic pump head extends into the magnetic coupling part. The servo motor is used in the micro magnetic pump to drive the magnetic coupling part, and the control accuracy is higher, and the precise control of the suction amount can be achieved, and the quantitative suction of the liquid medium can be achieved. In addition, the overall structure is simple, the installation is convenient, and the sealing effect is good. At the same time, the magnetic pump head can use existing components, and only requires additional processing of parts such as the mounting seat, so the modification cost is low.

[0044] Please refer to Figures 1 to 3 The present embodiment provides a micro magnetic pump 100, which is applied to cigarette production equipment to transport liquid media (such as glue, liquid flavoring, etc.).

[0045] The micro magnetic pump 100 includes a servo motor 10, a mounting seat 20, a mounting ring 30, a magnetic coupling part 40, and a magnetic pump head 50. The mounting seat 20 is fixedly connected to the housing 11 of the servo motor 10, and the mounting seat 20 is provided with a first avoidance hole 21. The mounting ring 30 is fixedly connected to the mounting seat 20, and the mounting ring 30 is recessed to form a receiving space 31 on the side away from the mounting seat 20. The mounting ring 30 is provided with a second avoidance hole 32 on the side close to the mounting seat 20, and the second avoidance hole 32 is connected to the receiving space 31. The output shaft 12 of the servo motor 10 passes through the first avoidance hole 21 and the avoidance hole 32, and extends into the receiving space 31. The magnetic coupling part 40 is located in the receiving space 31 and is fixedly connected to the output shaft 12. The magnetic pump head 50 is fixedly connected to the mounting ring 30, and the magnetic rotor part of the magnetic pump head 50 extends into the magnetic coupling part 40.

[0046] The biggest advantage of the magnetic pump head 50 is that it has no output shaft. Compared with conventional pump heads, there is no shaft leakage and sealing requirement.

[0047] The mounting seat 20 is a transition connection structure between the mounting ring 30 and the servo motor 10 , which can better adapt to the installation of the two and reduce the modification cost.

[0048] When the micro magnetic pump 100 is in operation, the output shaft 12 of the servo motor 10 drives the magnetic coupling part 40 to rotate, so that it forms a rotating magnetic field, and the rotating magnetic field drives the magnetic rotor of the magnetic pump head 50 to rotate, so that the magnetic pump head 50 can work normally. The magnetic pump head 50 is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet can be connected to the pipeline respectively, so that when the magnetic pump head 50 works normally, it can provide suction power to drive the liquid medium from the liquid inlet direction to the liquid outlet direction. The specific operating principle of the micro magnetic pump 100 is well known to those skilled in the art and will not be repeated here.

[0049] It is understandable that the micro magnetic pump in the prior art generally adopts a DC speed regulating motor, which results in low control accuracy of the micro magnetic pump and inability to achieve accurate control of the suction volume.

[0050] The micro magnetic pump 100 provided in this embodiment is driven by the servo motor 10, which has higher control accuracy, can realize precise control of the suction volume, and realize quantitative suction of the liquid medium, so as to better ensure the product yield in the cigarette production process. The overall structure of the micro magnetic pump 100 is simple. During installation, the components can be installed and fixed one by one in sequence, which is more convenient to install. After installation, the sealing effect is good, which can better ensure the stability of operation. At the same time, some components in the micro magnetic pump 100 can adopt existing structures. For example, the magnetic pump head 50 can be directly disassembled in the existing micro magnetic pump, so that only the mounting seat 20 and other components need to be processed to realize the transformation of the micro magnetic pump, and the transformation cost is low.

[0051] Preferably, in one embodiment, an output shaft threaded hole 121 is provided at the end of the output shaft 12, and a stepped mounting hole 41 for mounting a screw 60 is provided on the magnetic coupling portion 40, and the magnetic coupling portion 40 is mounted on the output shaft threaded hole 121 of the output shaft 12 through the screw 60. The magnetic coupling portion 40 is axially connected and radially positioned with the servo motor 10 through the screw 60, and the overall connection structure is stable and reliable, and the installation and positioning are simple and convenient.

[0052] Preferably, in one embodiment, the magnetic coupling portion 40 includes a first part 42 and a second part 43 which are connected in sequence, the stepped mounting hole 41 is arranged on the first part 42, a receiving space 431 is opened in the second part 43, and the magnetic rotor part of the magnetic pump head 50 extends into the receiving space 431.

[0053] Preferably, in one embodiment, a positioning ring 22 is protruded outwardly from the surface of the mounting seat 20 close to the mounting ring 30, and the positioning ring 22 matches the second avoidance hole 32. The matching of the positioning ring 22 and the second avoidance hole 32 means that the shape and size of the positioning ring 22 match the shape and size of the second avoidance hole 32, so that the positioning between the mounting seat 20 and the mounting ring 30 can be achieved through the cooperation between the positioning ring 22 and the second avoidance hole 32, thereby reducing the difficulty of installing the mounting seat 20 and the mounting ring 30.

[0054] Preferably, in one embodiment, the four end corners of the mounting seat 20 are provided with first threaded holes 23, and the housing 11 is provided with motor mounting holes 111 corresponding to each of the first threaded holes 23, and the servo motor 10 and the mounting seat 20 are fixedly connected by screws penetrating the motor mounting holes 111 and the first threaded holes 23. In other words, the mounting seat 20 and the servo motor 10 are fixed by screws, and the screws pass through the motor mounting holes 111 and are threadedly connected with the first threaded holes 23. With this structure, the connection reliability between the servo motor 10 and the mounting seat 20 can be better guaranteed.

[0055] Preferably, in one embodiment, a plurality of second threaded holes 24 are provided on the mounting seat 20, and all the second threaded holes 24 are sequentially spaced around the outer side of the positioning ring 22. A countersunk hole 331 is provided on the bottom wall 33 of the mounting ring 30 close to the mounting seat 20, and the countersunk hole 331 is arranged in a one-to-one correspondence with the second threaded hole 24. The mounting ring 30 and the mounting seat 20 are fixedly connected by countersunk screws passing through the countersunk holes 331 and the second threaded holes 24. In other words, the mounting ring 30 and the mounting seat 20 are fixed by countersunk screws, and the countersunk screws pass through the countersunk holes 331 and are threadedly connected with the second threaded holes 24. With this structure, the connection reliability between the mounting ring 30 and the mounting seat 20 can be better guaranteed.

[0056] Preferably, in one embodiment, a plurality of third threaded holes 34 are provided on the mounting ring 30, and all the third threaded holes 34 are equidistantly distributed along the circumference of the mounting ring 30 with the central axis of the mounting ring 30 as the center. A pump head mounting hole 511 is provided on the mounting disk 51 of the magnetic pump head 50, and the pump head mounting hole 511 is arranged in a one-to-one correspondence with the third threaded holes 34. The magnetic pump head 50 and the mounting ring 30 are fixedly connected by screws penetrating the pump head mounting hole 511 and the third threaded hole 34. In other words, the magnetic pump head 50 and the mounting ring 30 are fixed by screws, and the screws pass through the pump head mounting hole 511 and are threadedly connected with the third threaded hole 34. Through this structure, the connection reliability between the magnetic pump head 50 and the mounting ring 30 can be better guaranteed.

[0057] Preferably, in one embodiment, a surface of one side of the mounting ring 30 close to the magnetic pump head 50 is recessed to form a positioning groove 35, and the positioning groove 35 matches the mounting plate 51. The matching of the positioning groove 35 with the mounting plate 51 means that the shape and size of the positioning groove 35 match the shape and size of the mounting plate 51, so that the positioning between the mounting ring 30 and the magnetic pump head 50 can be achieved through the cooperation between the positioning groove 35 and the mounting plate 51, thereby reducing the difficulty of installing the magnetic pump head 50 and the mounting ring 30.

[0058] Preferably, in one embodiment, the mounting seat 20 is an aluminum seat.

[0059] Preferably, in one embodiment, the mounting ring 30 is a plastic ring.

[0060] Among them, in one embodiment, the magnetic pump head 50, the magnetic coupling part 40, the mounting ring 30, and the servo motor 10 can all adopt existing component structures (i.e., component structures already available in the workshop, no additional processing and production is required), and only the mounting seat 20 and the screw 60 need to be additionally customized. And the magnetic coupling part 40 only needs to be additionally processed to form the stepped mounting hole 41 that is compatible with the screw 60. The overall transformation cost is low, and it is suitable for promotion in workshops.

[0061] The above is only an implementation method of the present invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

Claims

1. A micro magnetic pump, characterized in that: It includes a servo motor, a mounting seat, a mounting ring, a magnetic coupling part, and a magnetic pump head; The mounting seat is fixedly connected to the housing of the servo motor and is provided with a first avoidance hole; The mounting ring is fixedly connected to the mounting seat, and a side of the mounting ring away from the mounting seat is recessed to form an accommodation space, and a side of the mounting ring close to the mounting seat is provided with a second avoidance hole, and the second avoidance hole is communicated with the accommodation space; The output shaft of the servo motor passes through the first avoidance hole and the second avoidance hole, and extends into the accommodating space; The magnetic coupling portion is located in the accommodating space and is fixedly connected to the output shaft of the servo motor; The magnetic pump head is fixedly connected to the mounting ring, and the magnetic rotor portion of the magnetic pump head extends into the magnetic coupling portion.

2. The micro magnetic pump according to claim 1, characterized in that: The end of the output shaft is provided with an output shaft threaded hole; The magnetic coupling portion is provided with a stepped mounting hole for screw mounting; The magnetic coupling portion is installed at the output shaft threaded hole of the output shaft through the screw.

3. The micro magnetic pump according to claim 2, characterized in that: The magnetic coupling part comprises a first part and a second part which are connected in sequence; The stepped mounting hole is provided on the first portion; The second part is provided with a receiving space; The magnetic rotor portion of the magnetic pump head extends into the accommodating space.

4. The micro magnetic pump according to claim 1, characterized in that: A positioning ring is protruded outwardly from a surface of the mounting seat close to the mounting ring, and the positioning ring matches the second avoidance hole.

5. The micro magnetic pump according to claim 4, characterized in that: The four end corners of the mounting seat are provided with first threaded holes; A motor mounting hole is provided on the housing of the servo motor corresponding to each of the first threaded holes; The servo motor and the mounting seat are fixedly connected by screws penetrating the motor mounting hole and the first threaded hole.

6. The micro magnetic pump according to claim 4, characterized in that: The mounting seat is provided with a plurality of second threaded holes, and all the second threaded holes are sequentially spaced around the outer side of the positioning ring; A countersunk hole is provided on the bottom wall of the mounting ring on one side close to the mounting seat, and the countersunk hole is arranged in a one-to-one correspondence with the second threaded hole; The mounting ring and the mounting seat are fixedly connected by countersunk screws penetrating the countersunk holes and the second threaded holes.

7. The micro magnetic pump according to claim 1, characterized in that: The mounting ring is provided with a plurality of third threaded holes; All the third threaded holes are centered on the central axis of the mounting ring and are distributed at equal intervals along the circumference of the mounting ring; A pump head mounting hole is provided on the mounting plate of the magnetic pump head, and the pump head mounting hole is arranged in a one-to-one correspondence with the third threaded hole; The magnetic pump head and the mounting ring are fixedly connected by screws penetrating the pump head mounting hole and the third threaded hole.

8. The micro magnetic pump according to claim 7, characterized in that: A surface of the mounting ring close to the magnetic pump head is concave to form a positioning groove, and the positioning groove matches the mounting plate of the magnetic pump head.

9. The micro magnetic pump according to claim 1, characterized in that: The mounting seat is an aluminum seat.

10. The micro magnetic pump according to claim 1, characterized in that: The installation ring is a plastic ring.

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