JP3225328U - Canned motor pump device - Google Patents

Abstract

An object of the present invention is to provide a canned motor pump device having high acid strength and strong acidity, and having high structural strength. A canned motor pump device including a base 10, a localization unit 20, a motor unit 30, a pump front lid 40, and a heat radiation lid 50, wherein the base 10 is made of a plastic material. An annular portion 11 defining a first inner hole, and a cover portion 12 defining a non-circular joint hole 121 communicating with the first inner hole. The motor unit 30 is made of a metal material, is non-rotatably mounted in the joint hole 121, and has a second inner hole 211 formed therein, which communicates with the first inner hole. The pump front lid 40 is attached to the base 10 so as to be inserted into the hole and the second inner hole 211, and the pump lid 40 is attached to the base 10 so as to cover the motor unit 30. It is. [Selection diagram] FIG.

Description

  The present invention relates to a pump for transporting a liquid, and more particularly, to a canned motor pump.

  A general pump manufactures a pump and a motor separately, and couples and uses them. Therefore, a through hole for passing the rotation shaft is formed in the pump case. When transporting a liquid using a pump, there is a possibility that the liquid leaks outside through a gap between the through hole and the rotating shaft. Therefore, in order to prevent leakage of liquid, a canned motor pump has been proposed in which a motor and a pump are coaxially connected and integrally manufactured. The canned motor pump does not have a through hole through which the rotating shaft passes through the pump case, thereby preventing the liquid from leaking from inside the pump to the outside.

  As shown in FIG. 1, Patent Document 1 discloses a canned motor pump including a pump case 1, an impeller 2, a cup-shaped storage shell 3, a rotating shaft 4, and a canned motor 5. Proposed. The canned motor 5 of the canned motor pump includes a motor case 6, a motor rear frame 7 fixed to the motor case 6, a stator 8 fixed in the motor case, and a rotor 9 housed by the storage shell. , Is provided. The pump side of the motor case 6 has a flange portion 6a, and the distal end of the housing shell 3 has a flange portion 6a of the motor case 6 and a shell flange portion 3a that can be joined to the pump case 1. Since the shell flange portion 3a is joined to the flange portion 6a of the motor case 6 and the pump case 1 and the storage shell 3 has no hole, it is possible to prevent the transport liquid from leaking from the canned motor pump.

Taiwan Patent No. I441984 Taiwan Patent No. I381100

  However, when transporting the liquid, there is a possibility that the liquid leaks from another device above the canned motor pump and falls on the upper part of the motor case 6. Further, when the transported liquid has a corrosive property such as strong acidity or strong alkalinity and the motor case 6 is made of a metal material, the motor case 6 is easily corroded by the corrosive liquid from above. . On the other hand, when the motor case 6 is made of a plastic material, the motor case 6 is deformed and deteriorated by the high temperature caused by the operation of the canned motor 5, so that the structural strength is reduced.

  Furthermore, if the leaked corrosive liquid permeates through the gap between the motor case 6 and the motor rear frame 7 to corrode the stator 8, the canned motor 5 may be damaged.

  Therefore, an object of the present invention is to provide a canned motor pump device that can solve the above-mentioned disadvantages.

  As a means for achieving the above object, the present invention provides the following canned motor pump device.

The canned motor pump device according to the present invention is:
A canned motor pump device including a base, a localization unit, a motor unit, a pump front lid, and a heat radiation lid, wherein the base is made of a plastic material, and is substantially aligned with a predetermined axis. A first side surface orthogonal to the first side surface, a second side surface opposite to the first side surface, and extending along the axis from the first side surface to the second side surface; Is connected to the second side surface of the annular portion along the axis, the annular portion defining a first inner hole having a circular cross section through which the axis passes. And a cover portion that communicates with the first inner hole on the inside and defines a non-circular joining hole having a cross section through which the axis passes, and the second side surface includes the Intermediate extending from the periphery of the inner hole to the base of the cover Wherein the localization unit is made of a metal material, is mounted in the joint hole so as to be non-rotatable with respect to the base, and extends internally along the axis; The motor unit is formed in a hollow cylindrical shape so as to have a second inner hole communicating with the inner hole, and the motor unit is configured to be inserted into the first inner hole and the second inner hole. A stator mounted on the housing, a stator fitted between the housing and the first inner hole and the second inner hole, a rotor mounted in the housing, and an impeller connected to the rotor, Wherein the pump front lid covers the impeller and is attached to the first side surface of the base, and the radiator lid connects the localization unit and the motor unit to each other. It is attached to the base so as to localize along the line.

  According to the above configuration, the canned motor pump device according to the present invention can obtain resistance to strong acidity or strong alkalinity because the base is made of a plastic material. In addition, since the localization unit is made of a metal material, it can withstand high temperatures caused by the operation of the motor. Therefore, the structural strength is higher than before.

  According to the present invention, a canned motor pump device having strong acidity or strong alkalinity and high structural strength can be provided by the above configuration.

It is sectional drawing which shows the structure of the conventional canned motor pump. FIG. 2 is a perspective view showing an embodiment of the canned motor pump device according to the present invention. FIG. 2 is an exploded perspective view showing the configuration of the embodiment. It is sectional drawing which shows the structure of this embodiment. It is the elements on larger scale of FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. 4.

  Hereinafter, an embodiment of a canned motor pump device according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 2 and 3, in the present embodiment, the base 10, the localization unit 20, the motor unit 30, the pump front lid 40, the heat radiation lid 50, and the leakage prevention means 60 Equipped.

  The base 10 is made of a plastic material (for example, an engineering plastic having resistance to acid or alkali such as PP, GFRPP, PVDF, CFRETE, etc.), and as shown in FIGS. An annular portion 11 having a first side surface 112 substantially orthogonal to the axis L of the first and second sides 113 opposite to the first side surface 112 and defining a first inner hole 111; A connection hole 121 connected to the second side surface 113 of the annular portion 11 along the axis L, communicating with the first inner hole 111 inside, and having a non-circular cross section perpendicular to the axis L is formed. And a support base 13 attached to the bottom surface of the cover 12.

  The first inner hole 111 extends from the first side surface 112 to the second side surface 113 along the axis L, and a cross section orthogonal to the axis L has a circular shape through which the axis L passes. The joining hole 121 communicates with the first inner hole 111 and has a polygonal (in the present embodiment, an octagon) contour of an outer peripheral edge of a cross section orthogonal to the axis L. And one end in the lateral direction orthogonal to the axis L of the first hole 122 and communicating with the first hole 122 and communicating with the first hole 122. And a dovetail-shaped second hole 123 extending in width from the second hole 123.

  The second side surface 113 of the annular portion 11 has an intermediate portion 114 that extends from the periphery of the first inner hole 111 to the base of the cover portion 12 (see FIG. 5). That is, the width of the joining hole 121 is larger than that of the first inner hole 111. The intermediate portion 114 has a plurality of screw holes 115 extending from the intermediate portion 114 to the first side surface 112.

  As shown in FIGS. 3 to 6, the localization unit 20 is made of a metal material, and is mounted in the joint hole 121 so as not to rotate with respect to the base 10. The localization unit 20 has a configuration in which the contour of the outer peripheral edge of the cross section orthogonal to the axis L corresponds to the first hole 122, and the localization main body 21 having the second inner hole 211 inside, and the axis L perpendicular to the axis L. The profile of the cross section is a dovetail tenon corresponding to the second hole 123, and is formed so as to have a connecting portion 22 connected to the stereotactic body 21. The second inner hole 211 extends along the axis L and communicates with the first inner hole 111.

  The localization main body 21 is fitted in the first hole 122, and the connection part 22 is fitted in the second hole 123.

  In addition, the localization main body 21 and the connection portion 22 are provided with a first end surface 23 in contact with the intermediate portion 114, a second end surface 24 on the opposite side of the first end surface 23, and an opening of the second inner hole 211. The two annular slots 25 recessed in the first end face 23 and the second end face 24 so as to leave a gap with the second inner hole 211 on the outside, and the screw holes 115 in the intermediate portion 114 are formed. And a plurality of through-holes 26 formed so as to correspond to positions.

  Since the localization unit 20 is non-rotatably attached to the base 10, the assembly between the localization unit 20 and the base 10 is stabilized. In addition, the base 10 made of a plastic material can provide resistance to strong acidity or strong alkalinity, and the localization unit 20 made of a metal material can withstand high temperatures caused by the operation of the motor unit 30. Therefore, the structural strength is higher than before.

  As shown in FIGS. 3 and 4, the motor unit 30 includes a housing 31 attached to the base 10 so as to be inserted into the first inner hole 111 and the second inner hole 211, and the housing 31 and the second housing 31. It has a stator 32 fitted between the first inner hole 111 and the second inner hole 211, a rotor 33 mounted in the housing 31, and an impeller 34 connected to the rotor 33.

  The housing 31 is formed in a cup shape so as to define a housing space 313 for housing the rotor 33 therein, and the hollow cylinder 311 inserted into the first inner hole 111 and the second inner hole 211. And a flange 312 projecting from the hollow cylinder 311 in a direction orthogonal to the axis L.

  The rotor 33 extends along the axis L, and has a rotating shaft 331 fixed in the housing 31 and an impeller 34 fixedly connected thereto. The rotating shaft 331 is rotatable relative to the rotating shaft 331. 331 is attached to the rotor main body 330.

  The hollow cylinder 311 includes a shaft turning portion 314 that receives and fixes one end of the rotating shaft 331. The shaft turning portion 314 includes an inner extending portion 315 protruding into the housing space 313, and an extending direction of the inner extending portion 315. An outer extending portion 316 extending in a direction opposite to the above, and a shaft hole 317 communicating with the accommodation space 313 and extending from the inner extending portion 315 to the outer extending portion 316 and recessed to receive one end of the rotating shaft 331. And

  The pump front cover 40 is screwed to the first side surface 112 of the annular portion 11 via a plurality of pump front cover screws 41 so as to cover the impeller 34 and support the rotating shaft 331. , Between the first side surface 112 of the annular portion 11 and the pump front lid 40.

  The heat dissipating lid 50 is mounted in the cover portion 12 of the base 10 so that the localization unit 20 and the motor unit 30 are localized along the axis L. The heat dissipating lid 50 includes a back surface 51 abutting on the second end surface 24 of the localization unit 20, a front surface 52 on the opposite side of the back surface 51, a convex portion 53 protruding from the front surface 52 along the axis L, and an axis L Along a housing hole 54 extending from the back surface 51 to the convex portion 53, a plurality of radiating fins 55 disposed around the convex portion 53 so as to project from the front surface 52, and an intermediate portion 114. A plurality of screw holes 56 formed so as to correspond to a certain screw hole 115 and the through hole 26 in the localization unit 20, and are screwed into the screw hole 115 through the screw hole 56 and the through hole 26. And a plurality of heat dissipation lid screws 57.

The housing 31 of the motor unit 30 is housed by being fitted into the housing hole 54. The housing hole 54 has a wide portion 541 for accommodating the hollow cylinder 311 of the housing 31, and a narrow portion 542 for accommodating the outer extension 316 of the hollow cylinder 311.
Further, the heat dissipating lid 50 projects from the front surface 52 together with the protruding portion 53 and the wiring wall 58 defining a wiring passage 581 on the inside of the both, and the heat dissipating lid 50 penetrates from the rear surface 51 to the front surface 52 to the wiring passage 581. And a communication hole 582 communicating therewith.

  Further, a wiring portion 59 is attached to a tip of the projecting portion 53 and the wiring wall 56 projecting from the surface 52. In the wiring section 59, electric wires and a board for controlling the motor unit 30 are arranged.

  As shown in FIGS. 3 and 4, the leak preventing means 60 includes two first leak preventing rings 61 fitted into the two annular slots 25 of the stereotactic unit 20, respectively, and the pump front cover 40. Second leakage prevention ring 62 sandwiched between the flange 312 of the motor unit 30 and a third leakage prevention ring sandwiched between the flange 312 and the first side surface 112 of the annular portion 11. 63, and a fourth leakage prevention ring 64 sandwiched between the heat dissipating lid 50 and the end face of the cover portion 12 abutting on the heat dissipating lid 50.

  As shown in FIGS. 4 to 6, when the assembly of the present embodiment is completed, the pump front cover 40 is screwed onto the first side surface 112 of the annular portion 11 via a plurality of pump front cover screws 41. By being attached, the flange 312 of the housing 31 of the motor unit 30 is pressed and fixed to the base 10. Further, the heat dissipating lid 50 is screwed to the second side surface 113 of the base 10 via a plurality of heat dissipating lid screws 57 and houses the housing 31 of the motor unit 30 so that the localization unit 20 and the motor unit 30 And fix it.

  With the above configuration, when the pump front lid 40 is screwed into the flange 312 of the motor unit 30 and the annular portion 11 of the base 10, the housing 31 of the motor unit 30 has no hole, thereby preventing leakage from the housing. be able to.

  A second leakage prevention ring 62 sandwiched between the pump front lid 40 and the flange 312; a third leakage prevention ring 63 sandwiched between the flange 312 and the first side surface 112; By having the fourth leakage prevention ring 64 sandwiched between the end face of the cover portion 12 abutting on the lid 50 and the heat radiation lid 50, the pump front lid 40, the flange 312, the flange 312 and the base are provided. 10 and the heat radiating lid 50 and the end face of the cover portion 12 which is in contact with the heat radiating lid 50 become watertight, and exhibit the effect of preventing the liquid leaked upward from seeping into the inside.

  Further, the first leak prevention ring 61 fitted into each of the two annular slots 25 of the localization unit 20 makes the abutting portions of the base 10 and the localization unit 20 and the localization unit 20 and the radiating lid 50 watertight, Therefore, the liquid leaking upward cannot infiltrate into the stator 32 of the motor unit 30.

  When using the present embodiment, for example, the stator 32 is electrically connected to a power supply, and the stator 32 causes the rotor main body 330 to rotate by the rotation shaft 331. Since the impeller 34 is fixedly connected to the rotor body 330, the impeller 34 rotates as the rotor body 330 rotates. As a result, the liquid is sucked in from the inflow port 401 of the front pump lid 40 and pressurized by the impeller 34, and the pressurized liquid flows out to the outflow port 402 of the front pump lid 40. This carries the liquid.

  According to the embodiment configured as described above, the canned motor pump device according to the present invention can obtain resistance to strong acidity or strong alkalinity because the base 10 is made of a plastic material, and Since the localization unit 20 is made of a metal material, it can withstand high temperatures caused by the operation of the motor unit 30. Therefore, the canned motor pump device has resistance to strong acidity or strong alkalinity, and has high structural strength.

  Although the preferred embodiments and variations of the present invention have been described above, the present invention is not limited to these, and all modifications and equivalents are provided as various configurations included in the spirit and scope of the broadest interpretation. Configuration.

  Since the canned motor pump device according to the present invention has resistance to strong acidity or strong alkalinity, it can be applied to various pumps for transporting corrosive liquids such as strong acidity or strong alkalinity.

DESCRIPTION OF SYMBOLS 10 Base 11 Annular part 111 1st inner hole 112 1st side surface 113 2nd side surface 114 Intermediate part 115 Screwing hole 12 Cover part 121 Joining hole 122 1st hole 123 Second hole 13 Support base 20 Localization unit 21 Localization main body 211 Second inner hole 22 Connection part 23 First end face 24 Second end face 25 Annular slot 26 Through hole 30 Motor unit 31 Housing 311 Hollow cylinder 312 Flange 313 Housing space 314 Shaft turning part 315 Inward extension Part 316 Outer extension part 317 Shaft hole 32 Stator 33 Rotor 330 Rotor main body 331 Rotating shaft 34 Impeller 40 Pump front lid 401 Inlet 402 Outlet 41 Pump front lid screw 50 Heat dissipation lid 51 Back surface 52 Surface 53 Convex part 54 Housing hole 541 Wide part 542 Narrow part 55 Heat radiation fin 5 Screw hole 57 Heat sink screw 58 Wiring wall 581 Wiring path 582 Wiring hole 59 Wiring part 60 Leak prevention means 61 First leak prevention ring 62 Second leak prevention ring 63 Third leak prevention ring 64 Fourth leak prevention ring L axis

Claims (6)

A canned motor pump device comprising a base, a localization unit, a motor unit, a pump front lid, and a heat dissipation lid,
The base is made of a plastic material, has a first side surface substantially orthogonal to a predetermined axis, and a second side surface opposite to the first side surface, and An annular portion extending along the first side surface from the first side surface to the second side surface and defining a first inner hole having a circular cross-section perpendicular to the axis and passing the axis through a center of gravity; A connection hole that is connected to the second side surface of the annular portion along the axis, communicates with the first inner hole inside, and has a non-circular cross section orthogonal to the axis. And a cover part to be
The second side surface has an intermediate portion that extends from a peripheral edge of the first inner hole to a base of the cover portion,
The orienting unit is made of a metal material, is non-rotatably mounted in the joining hole with respect to the base, and extends inside along the axis, and extends in the first inner hole. It is formed in a hollow cylindrical shape so as to have a second inner hole communicating therewith,
The motor unit includes: a housing attached to the base so as to be inserted into the first inner hole and the second inner hole; and a housing, the first inner hole, and the second inner hole. A stator fitted between the rotor, a rotor mounted in the housing, and an impeller connected to the rotor,
The pump front lid covers the impeller, and is attached to the first side surface of the base.
The canned motor pump device is characterized in that the heat dissipating lid is attached to the base so as to localize the localization unit and the motor unit along the axis. The joining hole communicates with the first inner hole, and has a first hole having a polygonal outline in a cross section orthogonal to the axis, and a first hole having a polygonal shape. A dovetail-shaped second hole, which is on one side in the transverse direction perpendicular to the axis and communicates with the first hole, and which widens from an end communicating with the first hole; And having
The localization unit has a configuration in which a contour of an outer peripheral edge of a cross section orthogonal to the axis line corresponds to the first hole, a localization main body having the second inner hole therein, and a cross section orthogonal to the axis line. 2. The canned motor pump according to claim 1, wherein a contour of the dovetail is a tenon tenon corresponding to the second hole, and has a connection portion connected to the stereotactic body. apparatus. The localization unit includes a first end surface abutting on the intermediate portion, a second end surface opposite to the first end surface, and a second inner hole outside an opening of the second inner hole. And two annular slots recessed in the first end face and the second end face, respectively, so as to leave a gap therebetween.
The canned motor pump device further comprises a leak preventing means,
Said leak proof means comprises two first leak proof rings fitted respectively in said two annular slots;
The canned motor pump device according to claim 1, wherein the heat dissipation lid is in contact with the second end surface. The housing is formed in a cup shape so as to define a housing space for housing the rotor therein, and a hollow cylinder inserted into the first inner hole and the second inner hole, A flange extending from the hollow cylinder in a direction orthogonal to the axis,
The rotor extends along the axis, and a rotating shaft fixed in the housing and the impeller are fixedly connected to the rotating shaft so as to be relatively rotatable with respect to the rotating shaft. And an attached rotor body,
The hollow cylinder includes a shaft turning portion that receives and fixes one end of the rotating shaft,
The axially rotating portion has an inner extending portion projecting into the accommodation space, an outer extending portion extending in a direction opposite to a stretching direction of the inner extending portion, and communicating with the accommodation space. An axial hole that is extended to an outer extending portion and is recessed to receive one end of the rotating shaft,
The flange of the housing is sandwiched between the pump front lid and the first side surface of the base,
The leak preventing means includes a second leak preventing ring sandwiched between the pump front lid and the flange, and a third leak preventing ring sandwiched between the flange and the first side surface. The canned motor pump device according to claim 3, comprising a ring. The heat dissipating lid has a back surface abutting on the second end surface, a surface opposite to the back surface, a protrusion protruding from the front surface along the axis, and a rear surface extending along the axis from the rear surface. A housing hole recessed so as to extend to the convex portion, and a plurality of heat radiation fins arranged around the convex portion so as to protrude from the surface,
The canned motor pump device according to claim 4, wherein the housing of the motor unit is inserted into the housing hole. The said housing hole has a wide part accommodating corresponding to the said hollow cylinder of the said housing, and a narrow part accommodating corresponding to the said outside extension part of the said hollow cylinder, The said housing hole is characterized by the above-mentioned. The canned motor pump device according to the above.

Images