TWM618049U - Canned magnetic pump for enhancing stability - Google Patents

Abstract

A canned magnetic pump with enhanced stability, comprising a base, a positioning base, a motor unit and a pump front cover. The base includes an inner ring surface, at least a part of which is perpendicular to a cross section of an axis Is a polygonal shape, the positioning seat includes an outer peripheral surface opposite to the inner ring surface, the outer peripheral surface is perpendicular to the axis in a polygonal cross section, the outer peripheral surface is non-rotatable relative to the inner ring surface, the motor unit includes A housing mounted on the base, a stator set between the housing and the base, the positioning seat, a rotor mounted inside the housing, and an impeller connected to the rotor, the The front cover of the pump is installed on the base and covered on the outside of the impeller. Thereby, the positioning seat is non-rotatably nested inside the base, which can enhance the stability of the motor unit in starting and running.

Description

Canned magnetic pump with enhanced stability

This new model relates to a canned magnetic pump, especially a canned magnetic pump with enhanced stability.

There is a permanent magnet canned pump (Taiwan Certificate No. I444536 Patent Case), which includes a pump front cover, a tripod, an impeller, a rear cover, a fixed shaft and a canned motor. The canned motor consists of a stator , Motor rotor, reinforced frame, middle frame and rear frame, the bottom of the reinforced frame is integrally formed with a fixed base; the axial middle of the inner diameter of the reinforced frame is provided with a radial annular rib, on which a plurality of Positioning block; the annular rib divides the inner diameter space of the reinforced frame into two front and rear sections. The front section of the circular hole-shaped space is used to tightly install the middle frame, and the rear space is used to tightly install the rear frame. When the middle frame and the rear frame are tightly locked together, the radial annular ribs (and multiple positioning blocks will be inserted into the grooves on the rear end of the middle frame to ensure that the three can be combined into one body, and the canned motor is fixed The base is firmly supported.

Although this permanent magnet canned pump can achieve the purpose of pumping the pump body, because the outer peripheral surface of the middle frame is circular, the front space of the reinforced frame is also a circular hole, and the middle frame and the front space are forced through Install tightly, although using these positioning blocks will Embedded in the grooves on the rear surface of the middle frame can make the middle frame and the reinforced frame be positioned in the circumferential direction. However, it is difficult to align the grooves with the positioning blocks during assembly. It is difficult to install accurately. For easy installation, there may be a gap between the card slots and the positioning blocks. After assembly and the motor starts, the vibration will cause the middle frame and the reinforced frame to rotate relative to each other, resulting in the The stability of the middle frame and the reinforced frame is poor.

In addition, the fixed base is integrally formed at the bottom of the reinforced frame, which not only causes the overall volume of the reinforced frame, but also if the fixed base is hit by foreign objects during transportation or use, the entire reinforced frame will be damaged. It may not produce a firm locking effect.

Therefore, the purpose of the present invention is to provide a canned magnetic pump with enhanced stability that can solve the existing shortcomings.

Therefore, the canned magnetic pump with enhanced stability of the present invention includes a base, a positioning seat, a motor unit and a pump front cover. The base is made of plastic material and made of a hollow cylinder, and includes an inner ring surface surrounding an axis and defining a receiving hole, at least a part of the inner ring surface is polygonal in cross section perpendicular to the axis, and the positioning seat is made of aluminum The alloy material is made of a hollow cylindrical shape, and is installed in the receiving hole of the base, and includes an outer peripheral surface opposite to the inner ring surface. The accommodating hole, the outer peripheral surface is non-rotatably relative to the inner ring surface, the motor unit includes a housing mounted on the base, a set on the housing and the base The base, the stator between the positioning bases, a rotor installed inside the casing, and an impeller connected to the rotor. The pump front cover is installed on the base and covered outside the impeller.

The effect of the present invention is to utilize at least a part of the inner ring surface of the base to have a polygonal cross section perpendicular to the axis, and the outer peripheral surface of the positioning seat to have a polygonal cross section perpendicular to the axis, so that the positioning seat is non-rotatable Nested inside the base not only has a simple overall structure and is easy to assemble, but also can enhance the stability of the motor unit in starting and running.

10: Pedestal

101: main part

102: side cover

11: The first end face

12: The second end face

13: receiving hole

14: inner ring surface

141: The first straight section

142: The first abutment

142’: sunken part

143: The second straight section

144: The second abutment

144’: Screw hole

144": groove

145: Third straight section

145’: The third abutment part

145": The fourth straight section

146: Inner Dovetail District

147: Inner Polygonal Area

148: Inner turning face

149: Inner corner

140: bottom face

140’: Depression

140": Lower perforation

20: positioning seat

21: The first side

22: second side

23: inner peripheral surface

231: Inner Hole

24: Outer peripheral surface

241: Outer Dovetail District

242: Outer polygonal area

243: Outer Turning Face

244: Outer corner

25: sink

26: The first cooling fin

27: Piercing

28: Lower screw hole

30: Motor unit

31: Shell

32: stator

33: Rotor

34: impeller

40: pump front cover

41: entrance

42: Exit

50: Cooling cover

51: inside

52: Outer side

53: second heat sink fin

54: keyhole

60: lower seat

61: Base

62: boss

63: Through hole

70: Axial bolt

80: locking screw

L: axis

The other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: Figure 1 is a perspective view of an embodiment of the canned magnetic pump with enhanced stability of the present invention; Figure 2 is the implementation Example of a three-dimensional exploded view of a base and a positioning seat; Figure 3 is a combined cross-sectional view of this embodiment; Figure 4 is a cross-sectional view along the line IV-IV in Figure 3; and Figure 5 is a section of Figure 3 Partially enlarged schematic diagram.

1 to 3, an embodiment of the canned magnetic pump with enhanced stability of the present invention includes a base 10, a positioning seat 20, a motor unit 30, a pump front cover 40, a heat dissipation cover 50, Lower seat 60, most axial bolts 70, and most locking screws Silk 80.

The base 10 is made of a plastic material and is made of a hollow cylinder. In this embodiment, it can be made of an engineering plastic material with acid and alkali resistance, such as polypropylene (PP) and fiber reinforced polypropylene (Glass Fiber Reinforced Polypropylene). GFRPP for short), Polyvinylidene difluoride (PVDF for short), Carbon Fiber Filled ETFE (CFRETFE for short). ETFE is the abbreviation of Ethylene Tetra Fluoro Ethylene in English, and the Chinese name is ethylene-tetrafluoroethylene. Copolymer, commonly known as fluoroplastic resin), etc., and includes a main body 101, a side cover 102 connected to the main body 101 along an axis L, a first end surface 11 disposed on the main body 101, and an edge The axis L is opposite to the first end surface 11 and is disposed on the second end surface 12 of the side cover 102, and a line is connected between the first end surface 11 and the second end surface 12 and surrounds the axis L and defines a The inner ring surface 14 of the receiving hole 13. The inner ring surface 14 is in a step shape and has a first straight section 141 intersectingly connected to the first end surface 11, and a first straight section 141 intersectingly connected to the first straight section 141 and substantially parallel to the first end surface 11. An abutting portion 142, a second straight section 143 intersectingly connected to the first abutting portion 142 and substantially parallel to the axis L, and a second straight section 143 intersectingly connected to the second straight section 143 and substantially parallel to the first The second abutting portion 144 of the end surface 11, a third straight section 145 intersectingly connected to the second abutting portion 144 and substantially parallel to the axis L, and a third straight section 145 intersectingly connected to the third straight section 145 and substantially parallel The third abutting portion 145' on the first end surface 11, and A fourth straight section 145" intersectingly connected to the third abutting portion 145', and the second end surface 12 intersectingly connected to the fourth straight section 145". The first abutting portion 142 has a plurality of recessed portions 142' communicating with the accommodating hole 13, the second abutting portion 144 has a plurality of screw holes 144' arranged at intervals around the axis L, and a plurality of The groove 144" communicated with the receiving hole 13. Referring to Figures 2 and 4, the cross section of at least a part of the inner ring surface 14 perpendicular to the axis L is polygonal, which means that the third straight section 145 is connected to the The cross section of the fourth straight section 145" perpendicular to the axis L is polygonal, and the third straight section 145 and the fourth straight section 145" each have an inner dovetail area 146, and a dovetail connected to the inner dovetail. The inner polygonal area 147 of the area 146, the inner polygonal area 147 has seven inner turning surfaces 148 arranged at intervals around the axis L, and an inner corner portion 149 is formed between every two inner turning surfaces 148. In addition, the base 10 also includes a bottom end surface 140 approaching the inner dovetail region 146, a recessed portion 140' recessed in the bottom end surface 140, and most of the lower through holes 140" provided in the recessed portion 140'.

With reference to Figures 2 and 4, the positioning seat 20 is made of aluminum alloy material and made into a hollow cylindrical shape, and is non-rotatably nested and installed in the receiving hole 13 of the base 10, and includes a second abutment The first side surface 21 of the back portion 144, a second side surface 22 opposite to the first side surface 21 along the axis L, and a second side surface 22 connected between the first side surface 21 and the second side surface 22 and surrounding the axis L and bounding An inner peripheral surface 23 of the inner hole 231, an outer peripheral surface 24 opposite to the inner peripheral surface 23 and opposite to the inner ring surface 14, and most of the sink grooves 25 recessed from the outer peripheral surface 24 toward the inner peripheral surface 23 , Most of the first heat dissipation fins 26, most of the The through holes 27 of the first side surface 21 and the second side surface 22, as well as the lower screw holes 28 provided mostly at the bottom, form a first heat dissipation fin 26 between the two adjacent sink grooves 25. The outer circumferential surface 24 has a polygonal cross-section perpendicular to the axis L and the cross-sectional shape corresponds to the receiving hole 13, the outer circumferential surface 24 is non-rotatably opposite to the inner annular surface 14, and the outer circumferential surface 24 has an outer dovetail area 241 , And an outer polygonal area 242 connected to the outer dovetail area 241. The outer polygonal area 242 has seven outer turning surfaces 243 arranged at intervals around the axis L, and an outer corner is formed between every two outer turning surfaces 243 244, the sink grooves 25 and most of the first heat dissipation fins 26 are respectively disposed on the outer turning surfaces 243, and each outer corner portion 244 can also be provided with a first heat dissipation fin 26.

The motor unit 30 includes a housing 31 installed on the base 10, a stator 32 set between the housing 31, the base 10, and the positioning seat 20, and a stator 32 installed inside the housing 31. The rotor 33 and an impeller 34 connected to the rotor 33. One end surface of the stator 32 abuts against the first abutting portion 142, and an outer peripheral surface abuts against the second straight section 143 and the inner peripheral surface 23. The detailed structure and operating principle of the motor unit 30 have nothing to do with the technical problem to be solved by the present invention and are not the focus of the present invention, so no further explanation is given.

The pump front cover 40 is fastened to the first end surface 11 of the base 10 with a plurality of screws, and is arranged outside the impeller 34, and has an inlet 41 arranged along the axis L, and an inlet 41 arranged on the inlet 41. The side corresponds to the outlet 42 of the tangent line (not shown) of the impeller 34.

The heat dissipation cover 50 is installed on the base 10, and the heat dissipation cover 50 is made of aluminum alloy material, and includes an inner side 51, an outer side 52 opposite to the inner side 51 along the axis L, and most of them are protruding from the The second heat dissipation fins 53 of the outer side 52, and most of the lock holes 54 connecting the inner side 51 and the outer side 52, the inner side 51 abuts against the third abutting portion 145' and the second positioning seat 20 The two side surfaces 22 also abut against the other end surface of the stator 32, and the heat dissipation cover 50 corresponds to the fourth straight section 145 ″ and is shielded by the side cover 102.

The lower seat 60 is detachably locked to the bottom of the base 10 and approaching the inner dovetail area 146. The lower seat 60 has a base portion 61, a base portion 61 protruding from the base portion 61 and nested in the recess The boss 62 of the portion 140 ′, and most of the through holes 63 communicated from the base portion 61 toward the boss 62.

The axial bolts 70 pass through the lock holes 54 and the through holes 27 and are screw-locked to the screw holes 144'.

The locking screws 80 are respectively penetrated through the through holes 63, the lower perforations 140" and are screwed to the lower screw holes 28, and the lower base 60 is locked to the base 10 and the positioning The base 20 is locked to the base 10.

In order to further understand the effects of the cooperation of the various elements of the present invention, the technical means used, and the expected effects, the following will be explained again, and it is believed that this will provide a more in-depth and specific understanding of the present invention.

As shown in Figure 3, Figure 4 and Figure 5, when the canned magnetic pump is assembled as a whole, the The positioning base 20 is disposed outside the stator 32, and the base 10 is also disposed outside the positioning base 20. The heat dissipation cover 50 also abuts on one side of the stator 32 and the positioning base 20.

When the stator 32 of the motor unit 30 is powered on, the rotor 33 can be driven to rotate, and the rotor 33 synchronously drives the impeller 34 to rotate, and the liquid introduced by the inlet 41 on the front side of the pump front cover 40 is then transferred to the impeller. 34 pumps toward the outlet 42 and achieves the purpose of pumping liquid.

Utilize the third straight section 145 of the base 10 to have a polygonal cross section perpendicular to the axis L (the third straight section 145 has the inner dovetail area 146 and the inner polygonal area 147), and the positioning seat 20 The outer circumferential surface 24 has a polygonal cross-section perpendicular to the axis L (the outer circumferential surface 24 has the outer dovetail area 241 and the outer polygonal area 242). When the positioning seat 20 is to be embedded in the receiving hole 13, it can prevent Stay and align easily. When the positioning seat 20 is embedded in the receiving hole 13, the positioning seat 20 can be non-rotatably positioned in the base 10, and penetrated into the base 10 through the axial bolts 70. The lock holes 54 and the through holes 27 are screwed to the screw holes 144', so that the positioning seat 20 is firmly fixed between the base 10 and the heat dissipation cover 50 in the axial direction, which can strengthen the motor unit 30 Stability of start-up and operation.

And by using the locking screws 80 to penetrate the through holes 63, the lower perforations 140" and screw to the lower screw holes 28, the lower seat 60 is detachably locked to the base 10 At the bottom, the lower seat 60 and the base 10 can be repaired and replaced separately. Even if the lower seat 60 is damaged by foreign objects during transportation or use, only the lower seat 60 needs to be replaced.

In addition, when the motor unit 30 generates heat energy during operation, and the heat energy is transferred from the stator 32 to the positioning base 20, the positioning base 20 utilizes the arrangement of the first heat dissipation fins 26 to have a larger heat dissipation area, and A better heat dissipation effect can be generated. The heat energy dissipated by the first heat dissipation fins 26 and the sink grooves 25 is transferred to the heat dissipation cover 50, and the second heat dissipation fins 53 are used for external heat dissipation. , Can extend the service life of the motor unit 30.

In addition, the positioning base 20 is recessed with the countersinks 25 on the outer peripheral surface 24. In addition to forming the first heat dissipation fins 26, the positioning base 20 has the effects of saving materials, reducing the positioning base 20 and the overall weight. The first abutting portion 142 of the base 10 is recessed with the recessed portions 142', and the second abutting portion 144 is recessed with the grooves 144", which also has the effect of saving materials and reducing overall weight. Moreover, although the thickness between the first end surface 11 of the base 10 and the first abutting portion 142 is relatively large, because of the arrangement of the recessed portions 142', the base 10 can be molded and cooled during the molding process. Reduce the amount of deformation.

In summary, the new canned magnetic pump with enhanced stability has a simple overall structure, easy manufacturing and assembly, and can achieve the effect of stable operation, which can indeed achieve the purpose of new cost.

However, the above are only examples of the present model. When the scope of implementation of the present model cannot be limited by this, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

10: Pedestal

101: main part

102: side cover

12: The second end face

13: receiving hole

14: inner ring surface

141: The first straight section

142: The first abutment

142’: sunken part

143: The second straight section

144: The second abutment

144’: Screw hole

144": groove

145: Third straight section

145’: The third abutment part

145": The fourth straight section

146: Inner Dovetail District

147: Inner Polygonal Area

148: Inner turning face

149: Inner corner

140: bottom face

140’: Depression

140": Lower perforation

20: positioning seat

21: The first side

22: second side

23: inner peripheral surface

231: Inner Hole

24: Outer peripheral surface

241: Outer Dovetail District

242: Outer polygonal area

243: Outer Turning Face

244: Outer corner

25: sink

26: The first cooling fin

27: Piercing

28: Lower screw hole

60: lower seat

61: Base

62: boss

63: Through hole

80: locking screw

L: axis

Claims (8)

A canned magnetic pump with enhanced stability, including: A base, made of a plastic material and made into a hollow cylindrical shape, and including an inner ring surface surrounding an axis and defining a receiving hole, at least a part of the inner ring surface is polygonal in cross section perpendicular to the axis; A positioning seat is made of aluminum alloy material and is made of a hollow cylinder, and is installed in the receiving hole of the base, and includes an outer peripheral surface opposite to the inner ring surface, and the outer peripheral surface has a polygonal cross section perpendicular to the axis And the cross-sectional shape corresponds to the accommodating hole, and the outer peripheral surface is non-rotatably relative to the inner ring surface; A motor unit includes a housing mounted on the base, a stator set between the housing and the base, the positioning seat, a rotor mounted inside the housing, and a The impeller of the rotor; and A pump front cover is installed on the base and covered outside the impeller. The canned magnetic pump with enhanced stability according to claim 1, wherein the base further includes a first end surface, and a second end surface opposite to the first end surface along the axis, and the inner ring surface is connected On the first end surface and the second end surface, the inner ring surface is in a step shape, and has a first straight section intersecting and connecting to the first end surface, and a first straight section intersecting and connecting to the first straight section and substantially parallel to A first abutting portion of the first end surface, a second straight section intersectingly connected to the first abutting section and substantially parallel to the axis, and a second straight section intersectingly connected to the second straight section and substantially parallel to the first A second abutting portion on one end surface, a third straight section intersectingly connected to the second abutting portion and substantially parallel to the axis, and a third straight section intersectingly connected to the third straight section and substantially parallel to the first end surface The third abutting portion, and a fourth straight section intersectingly connected to the third abutting portion, the second end surface intersectingly connected to the fourth straight section, and the stator abuts against the first abutting portion , The positioning seat abuts against the second abutting portion. The canned magnetic pump with enhanced stability according to claim 2, wherein the third straight section of the inner ring surface of the base has an inner dovetail area and an inner polygonal area connected to the inner dovetail area , The inner polygonal area has a plurality of inner turning faces arranged at intervals around the axis, and an inner turning part is formed between every two inner turning faces. The outer peripheral mask of the positioning seat has an outer dovetail area and a connection to The outer polygonal area of the outer dovetail area has a plurality of outer turning surfaces arranged at intervals around the axis, and an outer corner portion is formed between every two outer turning surfaces. The canned magnetic pump with enhanced stability according to claim 3, wherein the fourth straight section of the inner ring surface of the base also has an inner dovetail area and an inner polygon connected to the inner dovetail area The inner polygonal area has a plurality of inner turning faces, and an inner corner is formed between every two inner turning faces. The canned magnetic pump with enhanced stability as described in claim 2, further comprising a heat dissipation cover installed on the second end surface of the base, and a plurality of axial bolts. The heat dissipation cover is made of aluminum alloy and It includes an inner side surface, an outer side surface opposite to the inner side surface along the axis, and a plurality of lock holes connecting the inner side surface and the outer side surface, the inner side surface abuts against the positioning seat and the third abutting portion, the The second abutting portion of the base has a plurality of screw holes arranged at intervals around the axis. The positioning seat further includes a first side surface that abuts against the second abutting portion, and a first side surface that is opposite to the first side along the axis. The second side surface of the side surface, and most of the through holes connecting the first side surface and the second side surface, the axial bolts pass through the lock holes, the through holes and are screw-locked in the screw holes. The canned magnetic pump with enhanced stability as described in claim 3, further comprising a lower base detachably locked to the base, and most locking screws for locking the lower base to the base, The lower seat approaches the inner dovetail area. The canned magnetic pump with enhanced stability according to claim 6, wherein the base further includes a bottom end surface approaching the inner dovetail area, a recessed portion recessed in the bottom end surface, and a plurality of settings The lower perforation in the recessed portion, the lower seat has a base portion, a boss protruding from the base portion, and most of the through holes connected from the base portion to the boss, the positioning seat also has a plurality of devices In the lower screw holes at the bottom, the locking screws pass through the through holes, the lower perforations, and are screw-locked in the lower screw holes. The canned magnetic pump capable of enhancing stability according to claim 2, wherein the first abutting portion of the base has a plurality of sunken portions communicating with the receiving hole, and the second abutting portion has a plurality of and A groove communicating with the receiving hole.

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