KR20200118598A - Magnetic pump - Google Patents

Abstract

The present invention relates to a magnetic pump in which axial thrust and rotational force are controlled by magnetic force, so that durability and hygiene are excellent and maintenance cost is reduced. The magnetic pump includes a driving part, a housing part, a rotor part, a casing part, and an impeller part.

Description

Magnetic pump

The present invention relates to a magnetic pump, and more particularly, to a magnetic pump that controls axial thrust and rotational force by magnetic force, so that durability and hygiene are excellent and maintenance cost is reduced.

A pump is a device that pressurizes a low-pressure fluid to make the fluid have a high pressure and transports it through a pipe, or pumps the fluid in a low-pressure container into a high-pressure container through a pipe, such as drainage of groundwater and irrigation of agricultural water. It is widely used in all areas where fluids are used, from basic fields to mines, civil engineering, factories and homes.

Due to their use, these pumps are widely used in pharmaceutical, bio, food, cosmetics, secondary batteries, and chemical industries. In particular, the demand for pumps used in hygiene and safety important fields such as pharmaceuticals, bio, food, and cosmetics. The demand for technology development continues from the past to the present.

In addition, with the recent growth of the semiconductor and secondary battery industries, the high-purity solution transfer industry has developed, and furthermore, the demand for the development of pump technology is increasing.

Accordingly, technology development for sanitary pumps continues, the market size is expanding, and various types of sanitary pumps have been developed in the past. However, since hygiene is important in characteristics of a conventional sanitary pump, a mechanical seal is often used for sealing.Based on such a mechanical seal, a pump using a single mechanical seal or a double mechanical seal has become the mainstream.

However, since the pump based on such a mechanical seal maintains physical contact and pressure on the seal, the seal is inevitably damaged over time, and leakage, incidental due to the damage and breakage of the seal, Problems such as leakage and mixing of external pollutants occurred.

In order to overcome this problem, technologies for improving seal durability such as seal flushing and seal surface diamond coating have been developed, but the fundamental seal breakage problem has not been solved.

On the other hand, such seal breakage often occurs in dairy and food facilities that transport crude oil, which is susceptible to contamination and spoilage, or in production facilities where external conditions such as cell and bacterial culture must be thoroughly controlled and controlled. However, the damage of such a seal is not only the cost of replacing the seal, but also bacteria in the atmosphere are introduced and these bacteria proliferate exponentially, leading to the destruction of the product, and additional maintenance costs such as cleaning and sterilization of the entire pipe are incurred. Is done.

In addition, in high value-added industries such as semiconductors and batteries, if seal fragments or particles are included, it can lead to product degradation or product explosion due to mixed substances. There is a problem that can cause an imbalance and lead to an explosion in the production line.

Due to this problem, manufacturers with production facilities allocate 5-10% of the annual pump purchase cost to the seal replacement cost, and as the year increases, the seal replacement cycle becomes more frequent and the annual cost increases. It is a state of having to deal with inefficiencies.

Meanwhile, a magnetic pump has been developed that overcomes the shortcomings of such a seal pump and rotates the impeller using a permanent magnet in a state where the inside and outside are blocked without mechanical sealing such as a mechanical seal inside and outside the pipe. No. -1856942 is divided into a pump part and a motor part, and the urea water magnetic pump that generates the pump function by rotating the magnet by indirectly transmitting the motor driving force inside the motor part to the magnet by the inner bulkhead and the outer bulkhead has been disclosed. Korean Patent Registration No. 10-1766105 promotes the generation of an eddy current-based flow field among molten materials by magnetic coupling, thereby improving pump efficiency, and when rupture occurs, the pump is raised outside the well to avoid contact with the molten metal. , Or other suitable action has been disclosed.

However, such a magnetic pump is relatively difficult to control the hydraulic difficulties inherent in the pump such as cavitation and axial thrust than a mechanical seal pump, and has a relatively complex structure to control it. There is a problem that it has a range of use, so a countermeasure is needed.

(Patent Document 1) Korean Patent Registration No. 10-1856942

(Patent Document 2) Korean Patent Registration No. 10-1766105

An object of the present invention is to provide a magnetic pump that controls axial thrust and rotational force by magnetic force to provide excellent durability and hygiene and reduced maintenance costs.

An object of the present invention described above is a drive unit, a housing unit having a space in which the driving unit is coupled and fixed to one side and the output shaft of the driving unit can be accommodated therein, and is disposed inside the housing unit to the output shaft of the driving unit. It is coupled to rotate integrally with the output shaft, and has a rotor portion on which a first permanent magnet module is mounted, and a suction port provided to allow fluid to be sucked in the front side of the rotor unit and the other side of the housing unit. A casing portion having a discharge port provided to discharge fluid and disposed inside the casing portion, a second permanent magnet module is mounted to correspond to the first permanent magnet module of the rotor portion, and when the rotor portion is rotated, the rotor It is rotated so as to correspond to the part and includes an impeller part for introducing a fluid into the suction port and discharging the fluid through the discharge port, and the impeller part is rotated apart from the casing part by the first permanent magnet module and the second permanent magnet module. It can be achieved by providing a magnetic pump characterized in that it can be.

According to a preferred feature of the present invention, the impeller part is formed in a cylindrical shape, and a second permanent magnet module is built-in to receive the driving force, and the impeller body is formed on one side of the impeller body, and the fluid can be introduced and discharged into the casing part. It may have an impeller head having a plurality of blades provided to be.

In addition, the diameter of the impeller body may satisfy a range of 55% to 75% of the diameter of the impeller head.

In addition, a plurality of the first permanent magnet modules are provided at equal intervals along the outer circumferential surface of the rotor part, and the second permanent magnet modules are evenly distributed along the inner circumferential surface of the impeller body so as to correspond to the first permanent magnet module. It may be provided with a plurality of spaced apart at one interval.

In addition, any one of the plurality of first permanent magnet modules is disposed in a different polarity toward the outer peripheral surface of the rotor unit and the other adjacent permanent magnet module, and the plurality of second permanent magnet modules are each provided with the plurality of first permanent magnet modules. It is disposed so as to correspond to one permanent magnet, and the polarities may be different from each other so as to have attractive force with any one of the first permanent magnet modules.

In addition, the magnetic pump may further have a bushing having one side coupled to and fixed to the casing portion so as not to shake a rotation center when the impeller portion rotates, and through which the impeller portion is rotatably coupled.

In addition, an end portion of the bushing may have a stopper provided so that the impeller portion is not separated from the bushing.

In addition, in order to prevent the rotor part from being moved to the suction port of the casing part by pressure when the impeller part is rotated, the plurality of first permanent magnets are located at a position facing the suction port of the casing part so that the impeller part and the attractive force can be applied. A plurality of third permanent magnet modules having the same polarity and arrangement as the module may be further included.

In addition, the first permanent magnet module extends and protrudes to a position facing the suction port of the casing unit so that the impeller unit and the attraction force can be applied to prevent the impeller unit from being moved to the suction port side of the casing unit by pressure when the impeller unit rotates. It can be formed to be.

In addition, in order to prevent movement toward the suction port of the casing part by pressure when the impeller part rotates due to a repulsive force acting between the impeller part and the suction port of the casing part, the suction port side of the casing part has any one polarity and the suction port side and The opposite impeller portion may have the same polarity as any one of the above.

According to the magnetic pump according to the present invention, it is possible to pump in a state where the inside and outside are blocked without applying a mechanical seal, so that it is hygienic, excellent in durability, and maintenance cost is reduced.

Further, according to the magnetic pump according to the present invention, since it has a structure of a magnetic arrangement for controlling air bubbles and axial thrust, the range of use is diverse, and hygiene and durability are excellent by removing the anti-friction member.

Further, according to the magnetic pump according to the present invention, by removing the mechanical axial thrust control device and the power transmission device, power transmission loss is reduced, thereby improving efficiency and reducing maintenance costs.

1 is a perspective view showing a magnetic pump according to an embodiment of the present invention.
2 is an exploded perspective view of the magnetic pump shown in FIG. 1.
3 is an exploded perspective view of a main part of the magnetic pump shown in FIG. 1.
FIG. 4 is a cross-sectional view of a main part of the magnetic pump shown in FIG. 1.
5 to 8 illustrate arrangements of a first permanent magnet module and a second permanent magnet module of the magnetic pump shown in FIG. 1.
9 is a diagram showing an arrangement of a first permanent magnet module and a second permanent magnet module of a magnetic pump according to another embodiment of the present invention.
10 to 11 illustrate a casing of the magnetic pump shown in FIG. 1.
12 to 14 illustrate an impeller part of the magnetic pump shown in FIG. 1.
15 shows a third permanent magnet module of a magnetic pump according to another embodiment of the present invention.
FIG. 16 shows an operating state of the magnetic pump shown in FIG. 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments described below are only described in detail enough to allow those of ordinary skill in the art to carry out the invention easily, and this does not mean that the protection scope of the present invention is limited. Does not. And, in describing various embodiments of the present invention, the same reference numerals will be used for components having the same technical characteristics.

A magnetic pump according to an embodiment of the present invention will be described with reference to the accompanying drawings. The magnetic pump according to an embodiment of the present invention is a pump for pressurizing and transporting the fluid in hygiene industries such as milk, cosmetics, and pharmaceuticals. By removing a mechanical seal and a physical part that prevents separation due to the axial thrust of the rotor, It is constructed to have excellent hygiene and durability.

1 is a perspective view showing a magnetic pump according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the magnetic pump shown in Figure 1, Figure 3 is a main part of the magnetic pump shown in Figure 1 It shows an exploded perspective view.

In the magnetic pump according to the embodiment of the present invention, the driving unit 100 generates a driving force, the rotor unit 300 transmits the driving force to the impeller unit 500, and a suction port formed on the front surface of the casing unit 400 The fluid transferred through the 410 flows into the casing part 400 and is pressurized by the rotation of the impeller part 500 to be transferred through the discharge port 420 of the casing part 400. For this purpose, 1 to 3, including a driving unit 100, a housing unit 200, a rotor unit 300, a casing unit 400, an impeller unit 500, and further includes a bushing 600 can do.

The driving unit 100 serves to generate a driving force, and a general DC motor or an AC motor may be applied, and any device capable of generating power by receiving power such as a single-phase motor or a three-phase motor may be applied without limitation.

For stable mounting, the driving unit 100 may be mounted on the base plate 120 and covered with the motor cover 130, as shown in FIGS. 1 and 3, but such a configuration is not essential.

The output shaft 110 of the driving unit 100 may be formed with a square, oval, or circular groove (no drawing number), which is the rotor unit 300 when the rotor unit 300 is coupled to the driving unit 100 This is for fixing.

FIG. 4 is a cross-sectional view of a main part of the magnetic pump shown in FIG. 1.

As shown in Figure 4, the rotor unit 300 is coupled to the output shaft 110 of the driving unit 100, such a groove and the fixing member 111 fitted into the groove and the rotor unit 300 formed accordingly The rotor unit 300 may be firmly coupled to the output shaft 110 of the driving unit 100 due to the locking groove (no reference numeral). However, since this configuration is a generally known configuration combining the motor and other members, detailed descriptions are omitted.

The main body of the driving unit 100 is coupled to and fixed to the housing unit 200, and the output shaft 110 is accommodated in the housing unit 200.

The housing unit 200 serves to couple the driving unit 100 and the casing to each other and prevent the output shaft 110 from being exposed to the outside. As shown in FIG. 4, as shown in FIG. 4, a driving unit 100 is coupled to and fixed to one side, and a space 210 is formed therein to accommodate the output shaft 110 of the driving unit 100. This prevents injury by approaching the output shaft 110.

The rotor unit 300 is coupled to the output shaft 110 of the driving unit 100 and rotates integrally with the output shaft 110, and serves to transmit the driving force of the driving unit 100 to the impeller unit 500. To this end, the rotor part 300 is a rotor body having a first permanent magnet module 310 that is formed with an accommodation space (no drawing mark) in which the groove of the inner casing 440 can be accommodated, and is embedded to surround the accommodation space ( 300a) and a fixed end 300b formed protruding from one surface of the rotor body 300a and into which the output shaft 110 of the driving unit 100 is inserted and fixed.

5 to 8 illustrate arrangements of a first permanent magnet module and a second permanent magnet module of the magnetic pump shown in FIG. 1.

The first permanent magnet module 310 embedded in the rotor body 300a is provided with a plurality of first permanent magnet modules 310 spaced at equal intervals along the outer peripheral surface of the rotor unit 300 as shown in FIGS. 5 to 8. At this time, the first permanent magnet modules 310 are provided with an even number, and the first permanent magnet modules 310 adjacent to each other are arranged to have different polarities. In other words, any one of the first permanent magnet modules 310 is disposed to have a polarity different from that of any other adjacent first permanent magnet module 310, and as will be described later, the second permanent magnet module 510 The second permanent magnet modules 510 arranged side by side have different polarities, and the first permanent magnet module 310 and the second permanent magnet module 510 face each other so that magnetic forces such as attractive force act to rotate together. The polarity of) can be driven in a state arranged to be opposite.

As shown in FIG. 7, the first permanent magnet module 310 may be formed in a rectangular parallelepiped shape, and may have a lengthwise direction that is longer than that of the width direction so that it can fit the outer surface of the rotor unit 300. In addition, one surface of the first permanent magnet module 310 may be formed to have a curved shape so that the shape of the inner circumferential surface of the rotor unit 300 may match as shown.

9 is a diagram showing an arrangement of a first permanent magnet module and a second permanent magnet module of a magnetic pump according to another embodiment of the present invention.

As described above, the first permanent magnet module 310 may be formed in a rectangular parallelepiped shape, but as another embodiment, as shown in FIG. 9, one side may be bent at 90 degrees. At this time, the first permanent magnet module 310 may be disposed on the rotor unit 300 such that the bent portion is disposed on the driving unit 100 side, and thus the bent portion of the first permanent magnet module 310 is the impeller unit 500 ) In correspondence with the second permanent magnet module 510 of the second permanent magnet module 510 and the attractive force acts, so that the impeller unit 500 can be prevented from being moved toward the suction port 410 of the casing unit 400 due to axial thrust when rotating.

10 to 11 illustrate a casing of the magnetic pump shown in FIG. 1.

The casing part 400 serves to suck a fluid to increase pressure and discharge it. For this purpose, the casing part 400 has a suction port 410 through which the fluid is sucked and a discharge port 420 through which the fluid is discharged.

The casing part 400 may be formed of an outer casing 430 and an inner casing 440, as shown in FIGS. 10 to 11, for ease of manufacture and management, where the outer casing 430 has a suction port. 410 and the discharge port 420 are formed, the inner casing 440 is coupled to the housing portion 200 on one side and the outer casing 430 is coupled to the other surface so that the casing portion 400 is firmly coupled.

A groove (no drawing number) is formed on one side of the inner casing 440 in the direction of the driving unit 100, and as described above, the groove of the inner casing 440 is accommodated in the receiving space of the rotor unit 300, Inside, the impeller body 500b of the impeller unit 500 in which the second permanent magnet module 510 is embedded is disposed, so that the rotor unit 300 and the impeller unit 500 are placed on the magnetic force with the inner casing 440 interposed therebetween. It is also configured to be able to receive the rotational force caused by it.

The structure of the outer casing 430 is made of a structure for inhaling and discharging fluid used in a general pump, and since this is a known configuration, a detailed description is omitted herein.

12 to 14 illustrate an impeller part of the magnetic pump shown in FIG. 1.

The impeller part 500 is rotated by receiving a rotational force from the rotor part 300 to suck and pump fluid into the casing part 400, and for this purpose, the impeller head 500a including a plurality of blades 511 And an impeller body 500b in which a plurality of second permanent magnet modules 510 are embedded.

Here, in order to control bubble generation and axial thrust, the ratio of the impeller head 500a and the impeller body 500b may be adjusted. As shown in FIGS. 12 to 13, the diameter of the impeller body 500b (Fig. 13 in X), that is, the outer diameter of the cylinder is preferably configured in the range of 55% to 75% of the diameter of the impeller head 500a (indicated as Y in FIG. 13).

In other words, it was confirmed that bubble generation can be suppressed by adjusting to be 55% <diameter of impeller body (500b) / diameter of impeller head (500a) * 100% <75% or 0.55 <X / Y <0.75 in FIG. Became.

Specifically, when the relative size of the impeller body 500b increases (impeller body diameter/impeller head ratio increases) and exceeds a predetermined range, the groove of the inner casing 440 becomes large, and if so, the inner casing 440 In the portion where the impeller body 500b is accommodated, too much fluid flow is introduced, and thus turbulence in the fluid flowing to the outer casing 430 is further deepened, and thus, the generation of cavitation may be intensified.

On the contrary, in order to reduce this ratio, when the size of the impeller body 500b is reduced (the impeller body diameter/impeller head ratio decreases), the number of the second permanent magnet modules 510 built into the inside decreases, and thus the magnetic force As this decreases, the impeller portion is displaced in the casing direction due to a push phenomenon of the impeller portion 500 by axial thrust, thereby increasing the risk of collision with the casing portion 400.

Table 1 below shows an experiment through an impeller unit in which 8 to 10 second permanent magnet modules 510 of 16 mm x 12 mm size are installed inside the impeller body 500b having a diameter of 85 mm and impeller heads are applied to different diameters. The data are shown in [Table 1]. In this case, the number of the first permanent magnet modules 310 provided in the rotor unit may be the same or more.

Impeller head diameter Impeller body diameter/
Impeller head diameter Moving range of impeller part due to axial thrust
/ Whether a lot of air bubbles are generated Number of magnets 8 Number of magnets 9 Number of magnets 10 160mm 53.1% 2.3mm
/ clear 1.8mm
/ clear 1.6mm
/ clear 140mm 60.7% 1.3mm
/ clear 0.9mm
/ clear 0.5mm
/ clear 120mm 70.8% 0.8mm
/ clear 0.3mm
/ clear 0.0mm
/ clear 115mm 73.9% 1.0mm
/ clear 0.0mm
/ clear 0.0mm
/ clear 105mm 81.0% 1.0mm or less /
A large amount of air bubbles are generated 1.0mm or less
A large amount of air bubbles are generated 1.0mm or less
A large amount of air bubbles are generated

When the rotor is driven, the axial movement range generated along with the rotation of the impeller is preferably controlled to be less than 1.5 millimeters (mm) in consideration of the risk of collision with the casing. In addition, some bubbles may be unavoidably generated, but it is not allowed to generate a large amount of bubbles that are foamed enough to be observed with the naked eye in the pumped fluid.

Therefore, when the impeller body diameter / impeller head diameter ratio is changed by applying the impeller head of 105mm, 115mm, 120mm, 140mm, 160mm diameter to the impeller body of 85 mm (mm) diameter, a large amount of air bubbles are not generated and the impeller part moves. In order to control the distance to less than 1.5 millimeters (mm), if the safety factor is considered, a repeated experiment must be satisfied that 55% <diameter of impeller body (500b) / diameter of impeller head (500a) * 100% <75%. I could confirm it through.

In this way, by adjusting the ratio of the impeller body 500b and the impeller head 500a, the magnetic pump according to the present invention not only transmits rotational force by the first permanent magnet module 310 and the second permanent magnet module 510 In addition, by controlling the generation of air bubbles and even the axial thrust, there is no need for separate parts, such as wear rings or thrust bearings, to prevent collisions between the impeller unit 500 and the casing unit 400, thus providing excellent hygiene and durability. There is this.

In addition, in the conventional magnetic pump, since the position of the impeller part 500 was flexible, it was difficult to manufacture the impeller part 500 in an open type because the contact part had to use Wearing, but the magnetic pump according to the present invention does not have a separate part. The open type impeller part 500 may be manufactured and applied, and thus, problems that may be caused by foreign substances, such as wearing, etc., can be solved, for example, damage or contamination of the friction surface.

The impeller body 500b is formed in a cylindrical shape, and a plurality of second permanent magnet modules 510 are embedded inside. At this time, the second permanent magnet module 510 is disposed to correspond to the first permanent magnet module 310 of the rotor unit 300 as described above. That is, one second permanent magnet module 510 is arranged to have a polarity different from that of any other second permanent magnet module 510 adjacent to each other, while a polarity different from the first permanent magnet module 310 facing each other. It is arranged to have an attraction to each other and is configured to rotate together by magnetic force when the rotor unit 300 rotates.

The impeller head 500a includes a plurality of blades 511, and the blades 511 are rotated to suck and pump fluids, so that the pump can play an essential role. Here, the shape and structure of the blade 511 is a known technique, and the description is omitted here because it is substantially the same as the wing structure of a side channel or turbine type pump.

The impeller head 500a may be formed not to have a polarity, but as another embodiment, as shown in FIG. 14, the impeller head 500a may be formed to have any one of the N-pole or the S-pole. At this time, corresponding to this, the outer casing 430 described above is formed to have the same polarity as the impeller head 500a, and accordingly, the impeller head 500a can be more easily controlled with axial thrust.

Here, the meaning that the outer casing 430 and the impeller head 500a are configured to have the same polarity means that the outer casing 430 and the impeller head 500a are magnetized to have the same polarity, respectively, or It means that a magnet is embedded or mounted so that a repulsive force is generated.

In other words, when the impeller head 500a and the outer casing 430 are configured with the same polarity, when the impeller head 500a rotates, axial thrust is generated by the pressure of the fluid and moves toward the outer casing 430 Since they have the same polarity, the repulsive force acts to prevent movement toward the outer casing 430, and the stronger the axial thrust and the more the impeller head 500a moves toward the outer casing 430, the stronger the repulsive force due to the magnetic force becomes. The impeller head 500a is prevented from moving toward the outer casing 430 so that the axial thrust is easily controlled.

Due to this configuration, the magnetic pump according to the present invention has excellent durability and hygiene since the axial thrust is easily adjusted without additional parts.

On the other hand, the magnetic pump according to the present invention, as shown in Figure 14, one side is coupled to the casing part 400 is fixed and the impeller part 500 may further have a bushing 600 through which it is rotatably coupled. have.

The bushing 600 serves as a guide so that the center of rotation does not shake when the impeller part 500 rotates, and because it is a component that directly contacts the fluid, it may be composed of fine ceramic that has strong friction and is hygienic.

A stopper 610 may be formed at the end of the bushing 600, and the axial thrust of the impeller unit 500 is controlled by the first permanent magnet module 310 and the second permanent magnet module 510 as described above. However, it is used to prevent collision with the casing part 400 if the impeller part 500 is pushed out due to insufficient magnetic force due to an abnormal flow of fluid or excessive viscosity. The stopper 610 may be formed to be stepped at the end of the bushing 600, and thus, an accident that may occur may be prevented.

As described above, a magnetic pump according to an exemplary embodiment of the present invention has been described, and next, a magnetic pump according to another exemplary embodiment of the present invention will be described.

15 shows a third permanent magnet module of a magnetic pump according to another embodiment of the present invention.

The magnetic pump according to another embodiment of the present invention includes a drive unit 100, a housing unit 200, a rotor unit 300, a casing unit 400, an impeller unit 500, and further includes a bushing 600. Can include. Here, except for the rotor part 300, the driving part 100, the housing part 200, the casing part 400, the impeller part 500, and the bushing 600 according to the embodiment of the present invention are substantially the same. Here, the description will be omitted and only the rotor unit 300 will be described.

The rotor unit 300 according to another embodiment of the present invention includes the same configuration as the rotor unit 300 according to the above-described embodiment, but further includes a third permanent magnet module 320.

The third permanent magnet module 320 may be located on a surface facing the casing part 400 in an accommodation space (no reference numeral) in which the groove of the inner casing 440 of the rotor part 300 can be accommodated. . The third permanent magnet module 320 is formed to have the same polarity and the same arrangement as the first permanent magnet module 310, and thus, as shown in FIG. 15, the second permanent magnet module 510 and the third The permanent magnet module 320 generates magnetic attraction to each other and pulls the impeller unit 500 to the opposite side of the suction port 410 of the casing unit 400, so that when the impeller unit 500 rotates, the casing unit 400 ) Is moved toward the suction port 410 to prevent a collision from occurring.

Due to this configuration, the magnetic pump according to the present invention does not require a separate part, such as a wear ring or thrust bearing, to prevent collision between the impeller part 500 and the casing part 400, and thus has excellent hygiene and durability. There is this.

As described above, the magnetic pump according to the present invention has been described, and the operation of the magnetic pump according to the present invention will be described next.

16 shows an operating state of the magnetic pump according to the present invention.

The magnetic pump according to the present invention pressurizes and transports fluid in hygiene industries such as milk, cosmetics, and pharmaceuticals. At this time, the driving unit 100 is first driven to transfer the fluid. The rotor unit 300 is coupled to the output shaft 110 of the driving unit 100 and rotates integrally.

A first permanent magnet module 310 is arranged along the circumference inside the rotor part 300, and a second permanent magnet module 510 corresponding thereto is arranged in the impeller part 500. When the rotor unit 300 is rotated due to the magnetic force between the magnets, the impeller unit 500 is also rotated, and due to this rotation, the fluid is sucked into the suction port 410 of the casing unit 400 and through the discharge port 420 It is pressed and discharged. At this time, according to the rotation, as shown in FIG. 16, the impeller part 500 generates an axial thrust F toward the suction port 410 of the casing part 400. Such axial thrust is basically controlled by the attractive force of the first permanent magnet module 310 and the second permanent magnet module 510 to prevent the impeller part 500 from moving.

On the other hand, as another embodiment, the end of the first permanent magnet module 310 may be extended to a position facing the suction port 410 of the casing unit 400 and protruded, in this configuration, the impeller unit 500 is further The axial thrust is controlled so that it can be prevented from moving toward the suction port 410 of the casing part 400.

On the other hand, as another embodiment, by additionally embedding the third permanent magnet module 320 in the rotor part 300, the axial thrust of the impeller part 500 is controlled to move toward the suction port 410 of the casing part 400. Can be prevented.

On the other hand, as another embodiment, the impeller head 500a of the impeller unit 500 is made to have one magnetic polarity, and the outer casing 430 of the casing unit 400 is made to have the same polarity, so that the impeller unit 500 When is about to move, a repulsive force is applied to prevent the impeller unit 500 from moving.

In this way, the user can pump with the inside and outside blocked without applying mechanical seals, so it is hygienic and durable, reduces maintenance costs, and has a magnetic array structure to control air bubbles and axial thrust. According to the present invention, there are various, excellent hygiene and durability by removing the anti-friction member, and also, by removing the mechanical axial thrust control device and the power transmission device, the power transmission loss is reduced, so that the efficiency is excellent and the maintenance cost is reduced. Magnetic pumps can be used.

The magnetic pump according to the embodiment of the present invention has been described above. However, those of ordinary skill in the art to which the embodiment belongs can realize that this embodiment can be implemented in other specific forms without changing the technical idea or essential features. You can understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

100: drive unit
200: housing part
300: rotor part
400: casing part
500: impeller part
600: bushing

Claims (10)

Driving unit;
A housing unit having a space in which the driving unit is coupled to and fixed to one side and an output shaft of the driving unit is accommodated therein;
A rotor portion disposed inside the housing portion, coupled to the output shaft of the driving portion, rotated integrally with the output shaft, and mounted with a first permanent magnet module;
A casing unit coupled to the other side of the housing unit and having an inlet port provided to allow fluid to flow therethrough and a discharge port provided at a side portion to allow fluid introduced through the inlet port to be discharged; And
It is disposed inside the casing, a second permanent magnet module is mounted to correspond to the first permanent magnet module of the rotor, and when the rotor part is rotated, it is rotated to correspond to the rotor part and sucks fluid through the suction port to It includes an impeller part for discharging the fluid through a discharge port,
The magnetic pump, characterized in that the impeller portion can be rotated apart from the casing portion by the first permanent magnet module and the second permanent magnet module. The method of claim 1,
The impeller unit has a cylindrical shape and a second permanent magnet module is built-in to receive the driving force, and a plurality of blades formed on one side of the impeller body and provided to inflow and discharge fluid into the casing unit. Magnetic pump, characterized in that it has an impeller head. The method of claim 2,
Magnetic pump, characterized in that the diameter of the impeller body ranges from 55% to 75% of the diameter of the impeller head. The method of claim 2,
A plurality of the first permanent magnet modules are provided at equal intervals along the outer circumferential surface of the rotor, and the second permanent magnet modules are equally spaced along the inner circumferential surface of the impeller body so as to correspond to the first permanent magnet module. Magnetic pump, characterized in that provided with a plurality of spaced apart. The method of claim 4,
Any one of the plurality of first permanent magnet modules is disposed in a different polarity toward the outer peripheral surface of the rotor from the other adjacent first permanent magnet module, and the plurality of second permanent magnet modules are each of the plurality of first permanent magnet modules. The magnetic pump, characterized in that arranged so as to correspond to the permanent magnet, the polarity is arranged differently so that the first permanent magnet module and each attraction can be formed. The method of claim 1,
The magnetic pump further comprises a bushing having one side coupled to and fixed to the casing portion so as not to shake the center of rotation when the impeller portion rotates, and through which the impeller portion is rotatably coupled. The method of claim 6,
Magnetic pump, characterized in that it has a stopper provided at the end of the bushing so that the impeller portion is not separated from the bushing. The method of claim 4,
The rotor unit includes the plurality of first permanent magnet modules at a position facing the suction port of the casing unit so that the impeller unit and the attractive force can be applied to prevent movement toward the suction port of the casing unit by pressure when the impeller unit rotates. Magnetic pump, characterized in that it further comprises a plurality of third permanent magnet modules having the same polarity and arrangement. The method of claim 4,
The first permanent magnet module is formed to extend and protrude to a position facing the suction port of the casing unit so that the impeller unit and the attractive force can be formed in order to prevent movement toward the suction port of the casing unit by pressure when the impeller unit rotates. Magnetic pump, characterized in that the. The method of claim 1,
In order to prevent the impeller from being moved to the suction port of the casing part by pressure due to a repulsive force acting between the impeller part and the suction port of the casing part, the suction port side of the casing part has any one polarity and the suction port side Magnetic pump, characterized in that configured to have the same polarity as the polarity of any one of the impeller unit facing the.

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