KR100782041B1 - Liquid circulation pump using magnetic force - Google Patents

Abstract

A liquid circulation pump using magnetic force is provided to manufacture a magnet holder and an impeller easily by molding the magnet holder integrally with a magnet, and a permanent magnet integrally with the impeller. A liquid circulation pump using magnetic force includes a motor bracket(110), a pump bracket(140), a blocking housing(150), a magnet holder(120), and an impeller(130). The motor bracket is fixed at a motor(100) and penetrated by a motor shaft. The pump bracket has an inlet for introducing liquid from the outside, and an outlet for discharging the liquid. The blocking housing prevents the liquid introduced into the pump bracket from entering the motor bracket, and has a cylindrical receiving unit. The magnet holder has magnets along the circumferential direction, and rotates with the shaft of the motor. The impeller comprises a cylinder(131) and a plurality of blades formed as one body with the cylinder.

Description

Liquid Circulation Pump Using Magnetic Force

1 is a cross-sectional view of a liquid circulation pump using a conventional magnetic force.

Figure 2 is an exploded perspective view of the liquid circulation pump of Figure 1;

Figure 3 is an exploded perspective view of the liquid circulation pump using a magnetic force according to the invention seen from one side.

Figure 4 is an exploded perspective view of the liquid circulation pump using a magnetic force according to the invention seen from the other side.

5 is a cross-sectional view of a liquid circulation pump using a magnetic force according to the present invention.

Figure 6 is a perspective view showing a magnet holder of the liquid circulation pump using a magnetic force according to the present invention.

Figure 7 is a perspective view showing the impeller member of the liquid circulation pump using a magnetic force according to the present invention.

<Description of Signs of Major Parts of Drawings>

100: motor 110: motor bracket

120: magnet holder 130: impeller

140: pump bracket 150: blocking housing

160: support shaft 170: blocking housing side bushing

180: pump bracket side bushing

Utility Model Model Registration of Korea Registration Utility Model No. 20-0425482

The present invention relates to a liquid circulation pump using magnetic force. More particularly, the present invention relates to a liquid circulation pump that can simplify the assembly and simplify the assembly process.

1 and 2 is a view showing a liquid circulation pump (hereinafter referred to as "prior art") disclosed in the registered utility model publication of the Republic of Korea Utility Model Registration No. 20-0425482, Figure 1 is a view of the liquid circulation pump of the prior art 2 is an exploded perspective view of the liquid circulation pump of FIG. 1.

As shown in FIG. 1, the liquid circulation pump includes a motor 12, a magnet rotating plate 10 connected to the motor 12 and including a magnet 10a, and a magnet 10a of the magnet rotating plate 10. An impeller (7) having a permanent magnet (7c ') positioned opposite to the magnet rotating plate (10) and connected by a magnetic force to receive and rotate a rotating force of the magnetic rotating plate (10), and the magnetic rotating plate (10); And a diaphragm 9 which blocks the impeller 7.

In this configuration, the impeller 7 rotated by the magnet rotating plate 10 presses the liquid flowing from the water storage chamber 4 by the blades 7a. At this time, when the liquid to be pumped is introduced to the motor 12 side, damage to the motor 12, the flow of the liquid to the motor 12 side by the diaphragm 9 is blocked.

In the prior art, the magnet rotating plate 10 fabricates a hub 10b by die casting a metal material (aluminum) under a high temperature environment of 700 ° C., and then processes a groove on the outer circumferential surface of the hub 10b and a magnet ( 10a) is completed by fixing with an adhesive. Thereafter, the motor shaft 12a is inserted into the center of the processed hub 10b, and the magnet plate 10 is fixed to the motor shaft 12a by inserting the bolt 12b in the radial direction as shown in FIG. 1. . Therefore, the prior art has to go through a number of processes, such as die casting, grooving, fixing in order to manufacture the magnetic rotating plate 10, and there is a complex problem of a series of manufacturing process, such as fixing it to the motor shaft (12a).

In addition, in the liquid circulation pump of the prior art, the support shaft rod 9a is connected between the diaphragm 9 and the pump bracket 6, and the impeller 7 is supported by the support shaft rod 9a. To this end, one end of the support shaft rod (9a) is fixed to the fixing portion (9 ') formed in the center of the diaphragm (9') via the stator (9b), the other end is pumped by the elastic support ring (9e) It is supported at the center of the bracket (6).

On the other hand, in the support shaft 9a, the ceramic bushing 9c is extrapolated to the diaphragm 9 side, and the ceramic washer 9d is extrapolated to the opposite end. Specifically, as shown in FIG. 2, a part of the outer circumferential surface of both ends of the support shaft bar 9a is processed ('D-cut') into a flat shape, and the ceramic bushing 9c inserted into both ends of the support shaft bar 9a and A part of the inner circumferential surface of the through hole of the ceramic washer 9d has a flat shape and is d-cut processed.

The prior art having such a configuration has a support shaft bar 9a having a D-cut outer circumferential surface at both ends, a ceramic bushing 9c having a D-cut cut through hole, and a ceramic washer 9D having a D-cut cut through hole. It is difficult to manufacture because parts having a complicated shape such as the stator 9b and the support ring 9e are required.

The present invention is to solve the problems of the prior art described above, to provide a liquid circulation pump using a magnetic force that can eliminate the unnecessary configuration, reduce the number of parts, simplify the parts to simplify the production and overall assembly process of parts. It aims to do it.

In order to achieve the above object, a liquid circulation pump using magnetic force according to the present invention includes a motor bracket fixed to a motor, a motor shaft penetrating inward, and one side opened; A pump bracket coupled to the motor bracket, the pump bracket having an inlet for introducing liquid therefrom and an outlet for discharging the sucked liquid; A blocking housing positioned between the motor bracket and the pump bracket to prevent the liquid introduced into the pump bracket from flowing into the motor bracket and having a cylindrical accommodation portion at the center thereof; A magnet holder fixed to the rotating shaft of the motor inside the motor bracket and having a magnet along an circumferential direction on an inner circumferential surface surrounding the receiving portion of the blocking housing; It is characterized in that it comprises an impeller member which is accommodated in the receiving portion of the blocking housing and has a permanent magnet in the circumferential direction therein, and a plurality of wings integrally formed with the cylinder.

Hereinafter, a preferred embodiment of a liquid circulation pump using a magnetic force according to the present invention with reference to the accompanying drawings will be described in more detail. Figure 3 is an exploded perspective view of the liquid circulation pump using a magnetic force according to the invention seen from one side, Figure 4 is an exploded perspective view of the liquid circulation pump using a magnetic force according to the present invention seen from the other side, Figure 5 using a magnetic force according to the present invention 6 is a perspective view showing a magnet holder of a liquid circulation pump using a magnetic force according to the present invention, and FIG. 7 is a perspective view showing an impeller member of a liquid circulation pump using a magnetic force according to the present invention.

First, referring to FIGS. 3 to 5, the liquid circulation pump using magnetic force according to the present invention includes a motor 100, a motor bracket 110 positioned in front of the motor 100, and the motor bracket 100. ) Coupled to the pump bracket 140, the motor bracket 110 and the pump bracket 140 located between the blocking housing 150, and a magnet holder that is rotated by receiving the rotational force of the motor 100 And an impeller member 130 coupled to the magnet holder 120 by a magnetic force to rotate by the rotation of the magnet holder 120.

The motor 100 has a rotating shaft 101 to rotate by an external power source (not shown) in the front, the rotating shaft 101 penetrates the motor bracket 110 to the inside of the motor bracket 110 It is coupled with the magnet holder 120 is received.

The motor bracket 110 is fixedly coupled to the motor 100 and has a hole 111 through which the rotating shaft 101 penetrates, and one side (right side of FIG. 3) has an open opening 112. have. The opening 112 has a coupling hole 113 for engaging the pump bracket 140 on the outside at equal intervals along the circumferential direction (see FIG. 3).

The pump bracket 140 has a coupling hole 141 corresponding to the coupling hole 113 of the motor bracket 110 on the outside, and the coupling means (not shown) passes through the coupling hole 141. Couple the pump bracket 140 to the motor bracket (110). In the inner space formed by coupling the motor bracket 110 and the pump bracket 140, the magnet holder 120, the blocking housing 150, the impeller member 130, and the like are sequentially received.

In addition, the pump bracket 140 has a suction port 142 for introducing a liquid in the center, the discharge port 143 for discharging the liquid is formed at a right angle to the suction port 142 on the outer peripheral surface. In the center of the suction port 142 is provided a locking portion 144 for engaging with the support shaft rod 160 to be described later.
The locking unit 144 will be described in more detail with reference to the support shaft bar 160.

A blocking housing 150 is provided between the motor bracket 110 and the pump bracket 140 to partition an internal space made by the motor bracket 110 and the pump bracket 140. The blocking housing 150 blocks the liquid sucked into the pump bracket 140 from flowing into the motor 100.

The blocking housing 150 includes a cylindrical accommodating part 151 formed at a center thereof, and a flat part 152 extending radially from the accommodating part 151. The accommodating part 151 is a part accommodated inside the motor bracket 110, and the connection hole 153 is formed at equal intervals along the circumferential direction on the outer side of the flat part 152. The connection hole 153 is in communication with the coupling hole 113 of the motor bracket 110 and the coupling hole 141 of the pump bracket 140, the motor bracket 110 and the pump bracket 140 is bolted The coupling means penetrates through when coupled by the coupling means. The connection hole 153 has a number corresponding to an integer multiple of the number of the coupling hole 113 and the coupling hole 141, thereby facilitating positioning of the blocking housing 150 at the time of coupling.

The magnet holder 120 is accommodated inside the motor bracket 110, one side is fixed to the rotating shaft 101 of the motor 100, the other side is open to surround the receiving portion 151 of the blocking housing 150 Cylindrical member. The magnet holder 120 has a fixing piece 121 to be fixed to the rotating shaft 101 of the motor 100 (see Fig. 6). In addition, a magnet 122 is disposed along the circumferential direction on the inner circumferential surface of the other side of the magnet holder 120. The magnet 122 surrounds the outer side of the accommodating part 151 of the blocking housing 150 accommodated in the magnet holder 120.

The magnet holder 120 is made by injection molding a plastic material, and when the injection molding, the fixing piece 121 and the magnet 122 is inserted into the insert injection molding. The fixing piece 121 is made of a metal material such as aluminum, and the rotating shaft 101 of the motor 100 is adhesively fixed to the fixing hole 123 formed in the fixing piece 121 by a metal adhesive.

When the magnet holder 120 is manufactured, insert injection molding is performed on the fixing piece 121 and the magnet 122 to make the production simpler than that of conventional die casting, and in the case of die casting, insert molding the magnet together. In this case, the die casting temperature is 700 ° C. or higher, which may bring about a change in the properties of the magnet. In the case of a plastic material, the injection temperature is about 280 ° C., so that the properties of the magnet do not change even when the magnet is inserted and injected. Therefore, the present invention has the advantage that the magnet 122 and the fixing piece 121 can be produced simultaneously with the magnet holder 120 without changing the properties of the magnet.

In addition, the present invention, as shown in Figure 6, by allowing the entire surface of the magnet 122 to be covered on the inner peripheral surface of the magnet holder 120 than the magnet 122 is fixed compared to the prior art for fixing only a part of the magnet It is to be stably coupled to the magnet holder 120.

3 to 5 and 7, the impeller member 130 is accommodated in an opposite side of the magnet holder 120, that is, the pump bracket 140 based on the blocking housing 150. The impeller member 130 is provided with a cylindrical cylinder 131 accommodated in the receiving portion 151 of the blocking housing 150, and a plurality of wings 132 formed on the opposite side of the cylinder 131. The cylinder 131 includes a permanent magnet 133 formed therein along the circumferential direction.

In the state where the impeller member 130 is mounted, the permanent magnet 133 is positioned to face the magnet 122 of the magnet holder 120 with the receiving portion 151 of the blocking housing 150 therebetween. (See FIG. 3). Due to this arrangement, the impeller member 130 is coupled to the magnet holder 120 by a magnetic force. As a result, when the magnet holder 120 rotates, the impeller member 130 rotates.

The impeller member 130 is made by injection molding a plastic material and inserts the permanent magnet 133 during injection molding to simplify the production by insert injection molding together.

The support shaft rod 160 is located between the blocking housing 150 and the pump bracket 140 to penetrate the impeller member 130 to support the impeller member 130 and to rotate at the same time. The support shaft rod 160 is a ceramic material in the same circular cross section as a whole, unlike the support shaft rod of the prior art. That is, the support shaft of the prior art has a flat shape of the outer circumferential surface of the both ends are D-cut, the support shaft rod 160 of the liquid circulation pump according to the present invention has the same circular cross section as a whole along the axial direction. Therefore, the support shaft rod 160 according to the present invention has an advantage in that easy processing compared to the support shaft rod of the prior art in itself.

In addition, the support shaft rod 160 is inserted into the blocking housing 150 is inserted and fixed, the concave groove 161 is formed on the outer circumferential surface in order to ensure the fixed after the injection. Since the plastic flows when the blocking housing 150 is injection molded into the concave groove 161, the support shaft rod 160 may not be easily separated from the blocking housing 150 even after being injected.

Block shaft housing side bushings 170 and pump bracket side bushings 180 are extrapolated to both sides of the support shaft bar 160 with respect to the impeller member 130. These bushings 170 and 180 prevent the wear of the impeller member 130 and the neighboring blocking housing 150 and the pump bracket 140 due to the rotation of the impeller member 130, respectively, thereby improving overall durability of the pump. Has The blocking housing side bushing 170 and the pump bracket side bushing 180 are preferably made of a ceramic material having high wear resistance.

The blocking housing side bushing 170 is positioned between the impeller member 130 and the blocking housing 150 and is connected to lock the rotation in the circumferential direction with respect to the blocking housing 150. In addition, the pump bracket side bushing 180 is located between the impeller member 130 and the pump bracket 140 and is connected to the rotation in the circumferential direction with respect to the pump bracket 140 is locked. That is, in the prior art, the ceramic bushing 9c and the ceramic washer 9d are connected so that rotation in the circumferential direction with respect to the support shaft bar 9a is locked so that the shape of the support shaft bar 9a is complicated and the assembly is complicated (Fig. 1 and 2), the present invention is a circumferential direction of the blocking housing side bushing 170 and the pump bracket side bushing 180 with respect to the blocking housing 150 and the pump bracket 140, not the support shaft rod 160. The assembly is simplified because the rotation is locked.

More specifically, referring to an enlarged portion of the blocking housing side bushing 170 in FIG. 3, the blocking housing side bushing 170 has a through hole 171 at the center to be extrapolated to the support shaft rod 160. The insertion hole 172 extending from the through hole 171 is formed at one side of the through hole 171.

On the other hand, the blocking housing 150 is formed with a fixing portion 154 for wrapping and fixing the support shaft rod 160, the insertion hole 172 of the blocking housing side bushings 170 to the fixing portion 154 Is inserted. In addition, at least one plane 172a having a flat shape is formed on a portion of the inner circumferential surface of the insertion hole 172, and the plane ( At least one fixing surface 154a having a flat shape is formed on a portion of the outer circumferential surface corresponding to 172a. Therefore, even if the blocking housing side bushing 170 is to rotate by friction with the impeller member 130, the plane 172a and the fixed surface 154a are in contact with each other, and thus, the blocking housing side bushing 170 cannot be rotated. 170, rotation is locked in the circumferential direction.

In the present exemplary embodiment, only one plane 172a and one fixing surface 154a are provided. However, the plane 172a and the fixing surface 154a may be provided in contact with each other, and may have a plurality of locking surfaces in the circumferential direction of the blocking housing side bushing 170. have.

Referring to an enlarged portion of the pump bracket side bushing 180 in FIG. 4, the pump bracket side bushing 180, like the blocking housing side bushing 170, is extrapolated to the support shaft bar 160 so that a through hole ( 181 is formed, and an insertion hole 182 is formed at one side of the through hole 181 to be extended from the through hole 181 and extrapolated to the locking portion 144 of the pump bracket 140 to be described later. .

On the other hand, the support member 145 of the pump bracket 140 has an end portion of the support shaft rod 160 is inserted and the locking portion 144 is extrapolated to the insertion hole 182 to the outside. In addition, at least one plane 182a having a flat shape is formed on a portion of the inner circumferential surface of the insertion hole 182, and a portion of the outer circumferential surface corresponding to the plane 182a is provided on the locking portion 144 to which the insertion hole 182 is extrapolated. At least one locking surface 144a having a flat shape is formed at. Therefore, even if the pump bracket side bushing 180 is to be rotated by the friction with the impeller member 130, the plane 182a and the locking surface 144a are in contact with each other, so that the pump bracket side bushing 180 cannot be rotated. 180 is locked in rotation in the circumferential direction.

In the present embodiment, only one plane 182a and one locking surface 144a are provided. However, if the two surfaces are in contact with each other and have a function of locking the rotation of the bracket side bushing 180 in the circumferential direction, a plurality may be provided. Can be.

As described above, the blocking housing side bushings 170 and the pump bracket side bushings 180 are not connected to each other so as to lock the rotation about the support shaft rod 160, unlike the conventional housings, respectively, the blocking housing 150 and the pump bracket ( 180 has a configuration that is connected so that the rotation is locked, there is no need to form a flat surface with respect to the support shaft rod 160 there is an advantage that it is easy to manufacture.

In addition, since the blocking housing side bushing 170 can be assembled after the support shaft bar 160 is fixed to the blocking housing 150, the injection shaft molding 160 can be injection molded into the blocking housing 150. . Therefore, first, the support shaft rod 160 is fixed to the blocking housing 150, and then the blocking housing side bushing 170, the impeller member 130, the pump bracket side bushing 180 and the pump bracket 140 in order to support the shaft ( Since the assembly can be performed by inserting into 160, the assembly is easy and the overall manufacturing process is simplified.

As mentioned above, although the Example with respect to this invention was described concretely, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the technical idea of Claim.

As described above, the present invention, when manufacturing the magnet holder, the insert injection molding of the magnet and the fixed piece together integrally, and the impeller member also insert injection molding integrally with the permanent magnet. This facilitates the manufacture of the magnet holder and the impeller member and can simplify the overall manufacturing process.

The present invention has a configuration in which the blocking housing side bushing and the pump bracket side bushing are locked in rotation in the circumferential direction with respect to the blocking housing and the pump bracket, respectively. This configuration simplifies the external appearance of the support shaft rod, and since the assembly can be completed by simply extrapolating the components extrapolated to the support shaft rod, the assembly process is simplified.

In addition, the present invention has the effect of simplifying the overall manufacturing process by removing the unnecessary configuration and reducing the number of parts in the liquid circulation pump using the magnetic force.

Claims (10)

A motor bracket fixed to the motor and the motor shaft penetrated inward and one side opened; A pump bracket coupled to the motor bracket, the pump bracket having an inlet for introducing liquid from the outside and a discharge port for discharging the sucked liquid; A blocking housing positioned between the motor bracket and the pump bracket to prevent the liquid introduced into the pump bracket from flowing into the motor bracket and having a cylindrical receiving portion at the center thereof; A magnet holder having a magnet along the circumferential direction on an inner circumferential surface of the motor bracket, which is fixed to the rotating shaft of the motor and rotates and surrounds the receiving portion of the blocking housing; It includes an impeller member which is accommodated in the receiving portion of the blocking housing and has a permanent magnet in the circumferential direction therein, and a plurality of wings integrally formed with the cylinder, The magnet holder is made of a plastic material, the magnet is a liquid circulation pump using a magnetic force, characterized in that the magnet holder is formed integrally with the insert injection molding. delete The method of claim 1, The magnet holder further comprises a fixing piece of metal material fixed to the rotating shaft of the motor, the fixing piece is a liquid circulation pump using a magnetic force, characterized in that formed integrally with the magnet holder by insert injection molding. A motor bracket fixed to the motor and the motor shaft penetrated inward and one side opened; A pump bracket coupled to the motor bracket, the pump bracket having an inlet for introducing liquid from the outside and a discharge port for discharging the sucked liquid; A blocking housing positioned between the motor bracket and the pump bracket to prevent the liquid introduced into the pump bracket from flowing into the motor bracket and having a cylindrical receiving portion at the center thereof; A magnet holder having a magnet along the circumferential direction on an inner circumferential surface of the motor bracket, which is fixed to the rotating shaft of the motor and rotates and surrounds the receiving portion of the blocking housing; It includes an impeller member which is accommodated in the receiving portion of the blocking housing and has a permanent magnet in the circumferential direction therein, and a plurality of wings integrally formed with the cylinder, The impeller member is a plastic material, the permanent magnet is a liquid circulation pump using a magnetic force, characterized in that formed integrally with the impeller member by insert injection molding. The method according to claim 1 or 3 or 4, The impeller member, the one end is supported in the blocking housing, the other end is a liquid circulation pump using a magnetic force, characterized in that the other end is penetrated by a support shaft rod supported by the pump bracket. The method of claim 5, The support shaft has a circular cross section along the axial direction, And a blocking housing side bushing which is extrapolated to the support shaft and is located between the impeller member and the blocking housing, and connected to the blocking housing so that rotation in the circumferential direction is locked; Extrapolated to the support shaft is located between the impeller member and the pump bracket, the liquid circulation pump using a magnetic force further comprises a pump bracket side bushing connected to the pump bracket so that rotation in the circumferential direction is locked. The method of claim 6, The blocking housing side bushing has a through hole through which the support shaft bar penetrates and an extension hole extending from the through hole, and having at least one flat hole having a flat shape on a part of an inner circumferential surface thereof. The blocking housing is a liquid circulating pump using a magnetic force, characterized in that the fixing portion formed with at least one fixed surface of the flat shape is provided in a portion of the outer peripheral surface to correspond to the plane formed in the insertion hole of the blocking housing side bushing in the center. The method of claim 6, The pump bracket side bushing has a through hole through which the support shaft bar penetrates and an extension hole extending from the through hole, and having at least one flat hole having a flat shape on a part of an inner circumferential surface thereof. The pump bracket is a liquid circulation pump using a magnetic force, characterized in that the locking portion formed with at least one locking surface of the flat shape is provided in a portion of the outer peripheral surface to correspond to the plane formed in the insertion hole of the pump bracket side bushing in the center. The method of claim 5, The support shaft is formed integrally by the blocking housing and the insert injection molding, the liquid circulation pump using a magnetic force, characterized in that the fixing groove is formed on the outer peripheral surface of one end of the support shaft bar fixed to the blocking housing. The method of claim 6, The support shaft, the blocking housing side bushing and the pump bracket side bushing is a liquid circulation pump using a magnetic force, characterized in that made of ceramic.

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