CN212202502U

CN212202502U - Miniature water pump capable of preventing silt

Info

Publication number: CN212202502U
Application number: CN202020494049.8U
Authority: CN
Inventors: 赵海杰; 林曾龙; 龙小杰
Original assignee: Zhejiang Dawei Electronic Co Ltd
Current assignee: Zhejiang Dawei Electronic Co Ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-12-22
Anticipated expiration: 2030-04-07

Abstract

The utility model discloses a prevent miniature pump of silt, including interconnect's end cover and base, be provided with water supply connector and water connectors on the end cover, be provided with the notch on the base, rotate in the notch and be provided with the rotor, the base is provided with stator winding around the notch, connects between end cover and the base and is formed with the water cavity, water supply connector, water connectors and water cavity are linked together, are provided with the impeller in the water cavity, and the opening part cover of notch is equipped with the apron, the rotor is fixed mutually with the impeller in the water cavity after passing the apron including the output shaft, the one end of this output shaft. The utility model discloses in can preventing that silt from getting into the clearance between rotor and the notch inner wall, the rotor operation is difficult to the card and dies, more is fit for using in the relatively poor area of quality of water.

Description

Miniature water pump capable of preventing silt

Technical Field

The utility model relates to a prevent miniature pump of silt.

Background

The miniature water pump is a common part on household appliances such as a water fountain, a water purifier and the like. A traditional micro water pump is shown in fig. 1, which includes an end cover 11, a base 12, the base 12 has a notch 121, a rotor 13 is inserted in the notch 121, the rotor 13 is rotatably sleeved on a shaft fixed between the end cover 11 and the base 12, the base 12 is provided with stator windings around the notch 121, the rotor 13 is formed by injection molding on a permanent magnet, and simultaneously, an impeller 131 is formed by injection molding, a water passing cavity is formed between the end cover 11 and the base 12, the impeller 131 of the rotor 13 is arranged in the water passing cavity, the end cover 11 is further provided with a water inlet joint 111 and a water outlet joint 112, the rotor and the impeller thereof are driven by electric power to rotate, so that water in the water inlet joint flows out from the water outlet joint along the water passing cavity.

In practical use, when the miniature water pump is applied to some areas with poor water quality, sediment in water easily enters a gap between the rotor 13 and the notch 121, so that the rotor 13 and the notch 121 are abraded, the rotor is easily clamped and fixed after long-term use, and the water pump is burnt out.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to prior art's not enough, the utility model provides a prevent miniature pump of silt is difficult to the card and dies, and more durable.

In order to achieve the purpose, the utility model provides a prevent miniature pump of silt, including interconnect's end cover and base, be provided with water supply connector and water connectors on the end cover, be provided with the notch on the base, rotate in the notch and be provided with the rotor, the base is provided with stator winding all around in the notch, connects between end cover and the base and is formed with the water cavity of crossing, water supply connector, water connectors and the water cavity of crossing are linked together, are provided with the impeller in the water cavity of crossing, and the opening part cover of notch is equipped with the apron, the rotor is fixed mutually with the impeller in the water cavity of crossing including the output shaft, the one end of this output shaft after passing the apron.

The utility model has the advantages that: cover notch department through the apron, the output shaft that only supplies the rotor wears out from the apron and rotates with the drive impeller, can avoid the silt of aquatic to enter into the clearance between rotor and the notch as far as possible to make micro-water pump have certain silt prevention ability, make it can use in the relatively poor area of quality of water, use for a long time and be difficult to the card die, burn out, the operation is more smooth and easy, stable.

Furthermore, the cover plate comprises a convex part which can be inserted into the notch for positioning, and the output shaft penetrates through the convex part.

The further setting brings the advantages that: the cover plate is matched with the notch for inserting and positioning through the convex part of the cover plate, so that the cover plate can be more stably covered at the opening of the notch, a larger gap is not easy to generate between the cover plate and the base, and the silt prevention effect is improved.

Furthermore, a first groove is formed in the convex portion, a through hole through which the output shaft can penetrate is formed in the first groove, a first shaft sleeve in running fit with the output shaft is embedded in the first groove, a second groove is formed in the bottom of the notch, and a second shaft sleeve in running fit with the other end of the output shaft is embedded in the second groove.

The further setting brings the advantages that: the connection cooperation between first axle sleeve, apron and the output shaft can provide littleer clearance to current processing technology level, can prevent effectively that silt from entering into in the notch from the clearance between first axle sleeve, apron and the output shaft, and the setting of first axle sleeve and second axle sleeve can be used for supporting the rotation of output shaft, reduces the wearing and tearing between output shaft and apron, the base, reduces frictional force.

Furthermore, the convex part comprises a base part for bearing the first groove and the through hole and a plurality of flanges which are uniformly distributed on the periphery of the base part in the circumferential direction, one ends of the flanges are connected with the base part, and the other ends of the flanges are in matched insertion connection with the inner wall of the notch.

The further setting brings the advantages that: the convex part adopts the structure, so that the material consumption can be reduced under the condition of ensuring the strength of the convex part, and the injection molding is convenient.

Furthermore, the output shaft is sleeved with gaskets between the first shaft sleeve and the rotor and between the second shaft sleeve and the rotor.

The further setting brings the advantages that: the arrangement of the gaskets can reduce the abrasion between the first shaft sleeve and the rotor and between the second shaft sleeve and the rotor, reduce the friction force and prolong the service life.

Furthermore, a concave part is arranged on a matching surface of the end cover connected with the base, the peripheral edge of the cover plate is embedded in the concave part, and the peripheral edge of the cover plate is tightly pressed and fixed between the end cover and the base.

The further setting brings the advantages that: make can the zonulae occludens cooperation between apron and the base, make the apron cover more steadily and establish the opening part at the notch, be difficult to produce great clearance between apron edge all around and the base, improve the silt prevention effect.

Furthermore, a notch is formed in one end of the output shaft in the lateral direction, the impeller is inserted into the notch at one end of the output shaft, so that circumferential limit between the impeller and the output shaft is formed, an annular groove is formed in the end portion of one end of the output shaft, and a clamping ring for limiting the impeller is sleeved in the annular groove.

The further setting brings the advantages that: the snap ring can carry on spacingly to axial one side of impeller, improves its stability when rotating, makes the impeller be difficult to deviate from the output shaft.

Further, the rotor and the output shaft are injection molded together.

The further setting brings the advantages that: the process flow is reduced, the processing and the assembly are convenient, and the rotor and the output shaft cannot shake.

Drawings

FIG. 1 is an exploded view of a prior art micro water pump;

FIG. 2 is a block diagram of an embodiment of the present invention;

fig. 3 is an exploded view of an embodiment of the present invention;

FIG. 4 is a diagram illustrating a structure of a cover plate according to an embodiment of the present invention;

fig. 5 is an assembly view of a rotor according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of an embodiment of the invention;

fig. 7 is an enlarged view of a portion a in fig. 6.

Detailed Description

The embodiment of the silt-proof micro-water pump of the utility model is shown in figures 2-7: including interconnect's end cover 21 and base 22, be provided with water supply connector 211 and water connectors 212 on the end cover 21, be provided with notch 221 on the base 22, the rotation is provided with rotor 3 in the notch 221, and base 22 is including annular holding chamber 222, and holding chamber 222 has held stator winding 4, and stator winding 4 sets up around notch 221, and the connection is formed with water passing chamber 23 between end cover 21 and the base 22, water supply connector 211, water connectors 212 and water passing chamber 23 are linked together, are provided with impeller 5 in the water passing chamber 23, and the opening part cover of notch 221 is equipped with apron 6, and apron 6 constitutes water passing chamber 23's inner wall, the diameter of apron 6 will be greater than the diameter of notch 221, rotor 3 is including output shaft 31, and the one end of this output shaft 31 is fixed mutually with impeller 5 in water passing chamber 23 after passing apron 6. The cover plate 6 includes a protrusion 61 that can be inserted into the recess 221 for positioning, and the output shaft 31 is inserted through the protrusion 61.

The convex portion 61 is provided with a first groove 611, the first groove 611 is provided with a through hole 612 through which the output shaft 31 can pass, the first groove 611 is embedded with a first shaft sleeve 71 which is rotatably matched with the output shaft 31, the bottom of the notch 221 is provided with a second groove 223, the second groove 223 is embedded with a second shaft sleeve 72 which is rotatably matched with the other end of the output shaft 31, the rotation of the output shaft 31 is more stable due to the arrangement of the first shaft sleeve 71 and the second shaft sleeve 72, and the first shaft sleeve 71 and the second shaft sleeve 72 are preferably made of graphite materials.

As shown in fig. 4, the protruding portion 61 includes a base 613 for carrying the first groove 611 and the through hole 612, and a plurality of flanges 614 circumferentially and uniformly distributed around the base 613, wherein one end of the plurality of flanges 614 is connected to the base 613, and the other end of the plurality of flanges 614 is inserted into the inner wall of the recess 221.

As shown in fig. 5-6, the output shaft 31 is further sleeved with gaskets 8 between the first sleeve 71 and the rotor 3 and between the second sleeve 72 and the rotor 3, and the gaskets 8 are preferably made of ceramic materials.

The matching surface of the end cover 21 connected with the base 22 is provided with a concave part 213, the peripheral edge of the cover plate 6 is embedded in the concave part 213, the peripheral edge of the cover plate 6 is tightly pressed and fixed between the end cover 21 and the base 22, and the end cover 21 and the base 22 are inserted and connected in a locking way through screws.

A notch 311 is formed in one end of the output shaft 31 in the lateral direction, the impeller 5 is provided with a hole matched with the cross section profile of the output shaft at the notch 311, the impeller 5 is inserted into the notch 311 at one end of the output shaft 31 through the hole of the impeller 5 to form circumferential limiting between the impeller 5 and the output shaft 31, an annular groove 312 is formed in the end portion of one end of the output shaft 31, and a snap ring 9 for limiting the impeller 5 is sleeved in the annular groove 312. The snap ring 9 can limit one axial side of the impeller 5, and the notch 311 can also limit the other axial side of the impeller 5, so that the impeller 5 can be stably sleeved and fixed on the output shaft 31 and is not easy to shake.

The rotor 3 and the output shaft 31 are formed by injection molding together, and a magnetic ring which is in induction fit with the stator winding 4 is formed on the rotor 3 by injection molding together.

The above embodiment is only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a miniature water pump of sand prevention, is provided with water supply connector and water connectors including interconnect's end cover and base on the end cover, is provided with the notch on the base, rotates in the notch and is provided with the rotor, and the base is provided with stator winding all around in the notch, connects between end cover and the base to be formed with the water cavity of crossing, water supply connector, water connectors and the water cavity of crossing are linked together, cross and be provided with impeller, its characterized in that in the water cavity: the opening of the notch is covered with a cover plate, the rotor comprises an output shaft, and one end of the output shaft penetrates through the cover plate and then is fixed with the impeller in the water passing cavity.

2. The silt-proof micro-water pump according to claim 1, wherein: the cover plate comprises a convex part which can be inserted into the notch for positioning, and the output shaft penetrates through the convex part.

3. The silt-proof micro-water pump according to claim 2, wherein: the convex part is provided with a first groove, a through hole for the output shaft to penetrate through is arranged in the first groove, a first shaft sleeve in running fit with the output shaft is embedded in the first groove, a second groove is arranged at the bottom of the notch, and a second shaft sleeve in running fit with the other end of the output shaft is embedded in the second groove.

4. The silt-proof micro-water pump according to claim 3, characterized in that: the convex part comprises a base part for bearing the first groove and the through hole and a plurality of flanges which are uniformly distributed on the periphery of the base part in the circumferential direction, one ends of the flanges are connected with the base part, and the other ends of the flanges are in matched insertion connection with the inner wall of the notch.

5. The silt-proof micro-water pump according to claim 3, characterized in that: and gaskets are sleeved between the first shaft sleeve and the rotor and between the second shaft sleeve and the rotor of the output shaft.

6. The silt-proof micro-water pump according to claim 1, wherein: the end cover is provided with a concave part on a matching surface connected with the base, the peripheral edge of the cover plate is embedded in the concave part, and the peripheral edge of the cover plate is tightly pressed and fixed between the end cover and the base.

7. The silt-proof micro-water pump according to claim 1, wherein: the impeller is inserted into the notch at one end of the output shaft to form circumferential spacing between the impeller and the output shaft, an annular groove is formed in the end part of one end of the output shaft, and a snap ring for spacing the impeller is sleeved in the annular groove.

8. The silt-proof micro-water pump according to any one of claims 1 to 7, wherein: the rotor and the output shaft are injection molded together.