CN218235505U

CN218235505U - Water pump for aquatic animals or gardening

Info

Publication number: CN218235505U
Application number: CN202123327924.7U
Authority: CN
Inventors: 余炳炎; 余建勤
Original assignee: Guangdong Boyu Group Co Ltd
Current assignee: Guangdong Boyu Group Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2023-01-06
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to a water pump for aquatic animals or gardening, which comprises a volute part, a motor part and an impeller, wherein the volute part is provided with a pump room, a water inlet and a water outlet; the motor part comprises a motor shell, a motor stator, a motor rotor and a supporting seat, the supporting seat comprises a supporting plate and a supporting sleeve, the supporting plate is arranged between the worm shell and the motor shell, the motor stator is sleeved on the periphery of the supporting sleeve and connected with the motor shell, a rotor chamber is formed between the supporting sleeve and the supporting plate, the motor rotor is rotatably arranged in the rotor chamber, and the first end of the motor rotor penetrates through the supporting plate and extends into the pump room; a first end mounted to the motor rotor; the motor rotor comprises a ceramic shaft and a permanent magnet rotor, a gap is formed between the inner wall of the permanent magnet rotor and the inner wall of the rotor chamber, a first water passing channel is arranged on the supporting plate, water in the pump room enters the rotor chamber through the first water passing channel, a second water passing channel is arranged on the ceramic shaft, and water in the rotor chamber enters the pump room through the first water passing channel, so that the motor rotor has the advantages of being good in heat dissipation and high in reliability.

Description

Water pump for aquatic animals or gardening

Technical Field

The utility model relates to a water pump technical field especially relates to a water pump for shui nationality or horticulture.

Background

The water pump generally comprises a volute, an impeller and a motor, wherein the volute comprises a pump room, and a water inlet pipe and a water outlet pipe which are communicated with the pump room, the impeller is installed in the pump room, and the motor drives the impeller to rotate at a high speed so as to throw water in the pump room to the periphery and further press the water into a water outlet. Because the impeller needs to rotate at a high speed, heat generated by friction between a motor shaft for mounting the impeller and a bearing easily causes the problems of overheating of a motor controller, demagnetization of a permanent magnet, insulating and burning of a coil and the like. Meanwhile, in the using process, because the water storage capacity of the pool used for aquatic animals or gardening is small, when the water pump is used for pumping water, the water pump is easy to cause no water idling due to untimely closing, and parts such as a motor rotor, a bearing and the like are seriously abraded and even fail.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water pump for shui nationality or horticulture, its heat dispersion is good and the reliability is high.

To achieve the purpose, the utility model adopts the following technical proposal:

there is provided a water pump for aquarium or horticulture, comprising:

the volute part is provided with a pump room, a water inlet and a water outlet which are respectively communicated with the pump room;

the motor part comprises a motor shell, a motor stator, a motor rotor and a supporting seat, wherein the motor shell is provided with a containing cavity, the motor shell is hermetically connected with the volute part, the supporting seat comprises a supporting plate and a supporting sleeve perpendicular to the supporting plate, the supporting plate is arranged between the volute part and the motor shell, the pump room and the containing cavity are respectively positioned at two sides of the supporting plate, the supporting sleeve is positioned in the containing cavity and is fixedly connected with the motor shell, the motor stator is sleeved on the peripheral part of the supporting sleeve, a rotor chamber is formed between the supporting sleeve and the supporting plate, the motor rotor is rotatably arranged in the rotor chamber, and a first end of the motor rotor penetrates through the supporting plate and extends into the pump room;

the impeller is arranged at the first end of the motor rotor;

the supporting plate is provided with a first water passing channel, two ends of the first water passing channel are respectively communicated with the pump room and the rotor chamber, and water in the pump room enters the rotor chamber through the first water passing channel;

the motor rotor comprises a ceramic shaft and a permanent magnet rotor sleeved on the periphery of the ceramic shaft, a gap is formed between the permanent magnet rotor and the inner wall of the rotor chamber, the ceramic shaft is provided with a second water passing channel penetrating through two ends of the ceramic shaft, two ends of the second water passing channel are respectively communicated with the pump room and the rotor chamber, and water in the rotor chamber enters the pump room through the second water passing channel.

Further, the rotor chamber is kept away from the one end of backup pad is provided with back sliding bearing, the backup pad with be provided with preceding slide bearing between the pottery axle, the pottery axle rotate set up in preceding slide bearing with on the back sliding bearing, preceding slide bearing with the week portion of back sliding bearing all overlaps and is equipped with bearing damping cover, back sliding bearing corresponds be provided with third water channel on the bearing damping cover, third water channel with the rotor chamber with the second water channel intercommunication of pottery axle.

Furthermore, the rear sliding bearing is provided with a fourth water passing channel, and the fourth water passing channel is communicated with the rotor chamber.

Furthermore, the first water passing channels are multiple, a bearing seat is arranged between the front sliding bearing and the supporting plate, and the first water passing channels are distributed at intervals along the peripheral part of the bearing seat.

Furthermore, the plurality of first water passing channels are distributed annularly, and the first water passing channels are arranged close to the peripheral wall of the support sleeve.

Further, the impeller comprises a base plate and blades arranged on the base plate, the base plate is connected with the ceramic shaft, the base plate is spaced from the supporting plate, so that a backflow channel is formed between the base plate and the supporting plate, and the backflow channel is communicated with the first water passing channel and the pump room respectively.

Furthermore, one side of the motor stator, which is far away from the supporting plate, is provided with a driving circuit, and the driving circuit is a Hall-free induction type brushless motor driving circuit.

Further, the driving circuit is encapsulated by epoxy resin.

Furthermore, the water inlet device also comprises a filter cover, and the filter cover is covered on the water inlet.

The utility model discloses compare in prior art's beneficial effect:

the utility model discloses a water pump for shui nationality or horticulture through installing electric motor rotor in the rotor chamber, sets up first water channel in the backup pad, and the epaxial second water channel that sets up of pottery through first water channel and second water channel intercommunication pump house and rotor chamber makes water circulate between pump house and rotor chamber and realizes the heat dissipation cooling to electric motor rotor, has good heat dissipation and the high characteristics of reliability.

Drawings

Fig. 1 is a schematic view of a water pump of an embodiment.

Fig. 2 is a sectional view of a water pump of an embodiment. (without filter mantle)

Fig. 3 is a schematic view of the support seat according to the embodiment.

In the figure:

1. a volute portion; 10. a pump house; 11. a water inlet; 12. a water outlet; 2. a motor section; 20. a motor housing; 21. a motor stator; 22. a motor rotor; 220. a ceramic shaft; 221. a permanent magnet rotor; 222. a second water passage; 23. a support plate; 230. a first water passage; 24. a support sleeve; 241. a rotor chamber; 25. a front sliding bearing; 26. a rear slide bearing; 27. a plane bearing; 28. a bearing damping sleeve; 3. an impeller; 31. a substrate; 32. a blade; 4. and (6) a filter cover.

Detailed Description

In order to make the technical problems, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further explained below by means of specific embodiments in conjunction with the accompanying drawings.

As shown in fig. 1 to 3, the utility model provides a water pump for aquatic animals or gardening, which comprises a volute part 1, a motor part 2 and an impeller 3, wherein the volute part 1 is provided with a pump room 10 and a water inlet 11 and a water outlet 12 which are respectively communicated with the pump room 10; the water inlet 11 is arranged along the axis of the impeller and far away from the motor part, the water inlet 11 is used for being communicated with an external water pool, and the water inlet 11 is immersed in water or is communicated with the water pool to be pumped through a water inlet pipeline when the water pumping device is used. The water outlet 12 is arranged along the radial direction of the impeller, the water outlet 12 is connected with a drainage pipeline, and the pump room 10 is used for containing water and the impeller 3. The motor part 2 comprises a motor shell 20, a motor stator 21, a motor rotor 22 and a supporting seat, wherein the motor shell 20 is made of engineering plastics, the motor shell 20 is provided with a containing cavity, the motor shell 20 is hermetically connected with the volute part 1, the supporting seat comprises a supporting plate 23 and a supporting sleeve 24 perpendicular to the supporting plate 23, the supporting plate 23 is arranged between the volute part 1 and the motor shell 20, the pump room 10 and the containing cavity are respectively positioned at two sides of the supporting plate 23, the supporting sleeve 24 is positioned in the containing cavity and is fixedly connected with the motor shell 20, the motor stator 21 is sleeved on the periphery of the supporting sleeve 24, a rotor chamber 241 is formed between the supporting sleeve 24 and the supporting plate 23, the motor rotor 22 is arranged in the rotor chamber 241, and a first end of the motor rotor 22 penetrates through the supporting plate 23 and extends into the pump room 10. In this embodiment, the motor housing 20 plays a role of integral support, the open end of the motor housing 20 is hermetically connected with the open end of the volute portion 1, and the support plate 23 is located between the motor housing 20 and the volute portion 1 and separates the accommodating cavity from the pump room 10 through the support plate 23. The support sleeve 24 has a cavity structure, and an open end thereof is connected to the support plate 23, so that a closed rotor chamber 241 is formed between the support sleeve 24 and the support plate 23. The rotor chamber 241 is used for mounting the motor rotor 22, and the motor rotor 22 includes a ceramic shaft 220 and a permanent magnet rotor 221 provided on the periphery of the ceramic shaft 220. The ceramic shaft 220 is made of high density ceramic and has high strength and wear resistance. Can avoid appearing wearing and tearing when the water pump does not have water idle running, the reliability is high. The motor stator 21 is sleeved outside the support sleeve 24 and is fixedly connected with the motor housing 20, a driving circuit is arranged on the motor stator 21, and the driving circuit controls the magnetic induction between the motor stator 21 and the motor rotor 22 to change, so that the motor rotor 22 rotates relative to the motor stator 21. The motor stator 21 is arranged coaxially with the motor rotor 22 so that the motor rotor 22 rotates about its axis. A gap is reserved between the permanent magnet rotor 221 and the rotor chamber 241, the ceramic shaft 220 is provided with a second water passing channel 222 penetrating through two ends of the ceramic shaft, two ends of the second water passing channel 222 are respectively communicated with the pump room 10 and the rotor chamber 241, water in the rotor chamber 241 can enter the pump room 10 through the second water passing channel 222, the support plate 23 is provided with a first water passing channel 230, two ends of the first water passing channel 230 are respectively communicated with the pump room 10 and the rotor chamber 241, and water in the pump room 10 can enter the rotor chamber 241 through the first water passing channel 230. The rotor chamber 241 is for accommodating the motor rotor 22 and water, and the second water passage 222 is provided in the middle of the ceramic shaft 220, which are coaxially provided. A first end of the ceramic shaft 220 extends into the pump chamber 10, the impeller 3 is mounted to the first end of the ceramic shaft 220, and a second end of the ceramic shaft 220 is spaced from an inner wall of the rotor chamber 241. When the water pump works, water enters the pump room 10 from the water inlet 11, the motor rotor 22 rotates around the axis of the motor rotor and drives the impeller 3 to rotate, and the water in the pump room 10 moves towards the periphery of the pump room 10 under the action of centrifugal force, so that the water is pressed into the water outlet 12. In the process, water enters the rotor chamber 241 through the first water passage 230, the periphery of the motor rotor 22 is immersed in the water, and heat generated by the motor stator 21, the permanent magnet rotor 221 and the ceramic shaft 220 in rotation is conducted to the water, so that heat dissipation and temperature reduction of the motor rotor 22 are realized. The water in the rotor chamber 241 is returned to the pump chamber 10 through the second water passage 222, so that the water circulation is realized. In the embodiment, the motor rotor 22 is installed in the rotor chamber 241, the first water passing channel 230 is arranged on the supporting plate 23, the second water passing channel 222 is arranged on the ceramic shaft 220, and the pump room 10 and the rotor chamber 241 are communicated through the first water passing channel 230 and the second water passing channel 222, so that water circulates between the pump room 10 and the rotor chamber 241 to dissipate heat and cool the motor rotor 22.

Specifically, a rear sliding bearing 26 is arranged on one side of the rotor chamber 241 far away from the support plate 23, a front sliding bearing 25 is arranged between the support plate 23 and the ceramic shaft 220, the ceramic shaft 220 is rotatably arranged on the front sliding bearing 25 and the rear sliding bearing 26, bearing damping sleeves 28 are respectively sleeved on the peripheral parts of the front sliding bearing 25 and the rear sliding bearing 26, a third water passing channel is arranged on the bearing damping sleeve 28 corresponding to the rear sliding bearing 26, and the third water passing channel is communicated with second water passing channels 222 on the rotor chamber 241 and the ceramic shaft 220. In this embodiment, the bearing damping sleeve 28 is made of silicon rubber. The front sliding bearing 25 and the rear sliding bearing 26 are used for supporting the motor rotor 22, and the bearing damping sleeve 28 plays a damping role, so that the stability of the motor rotor 22 in rotation is improved. The plane bearings 27 are arranged between the front sliding bearing 25 and the rear sliding bearing 26 and between the permanent magnet rotor 221, so that the contact surfaces between the two ends of the permanent magnet rotor 221 along the axial direction and the front and rear sliding bearings are prevented from being abraded in the rotating process. The second end of ceramic shaft 220 is located to back sliding bearing 26 cover, and the medial surface of bearing damping cover 28 and back sliding bearing 26 butt, and the lateral surface of bearing damping cover 28 and the inner wall butt of rotor chamber 241 are provided with a plurality of third water channels on the lateral surface of bearing damping cover 28. The rotor chambers 241 at both sides of the bearing damper housing 28 are communicated through the third water passage, so that water in the end of the rotor chamber 241 close to the support plate 23 can enter the end of the rotor chamber 241 far from the support plate 23 through the third water passage.

Specifically, the rear slide bearing 26 is provided with a fourth water passage, which communicates with the rotor chamber 241. In this embodiment, a fourth water passage is provided on the rear sliding bearing 26, and the fourth water passage is arranged in parallel with the axis of the rear sliding bearing 26. The rotor chambers 241 at both sides of the rear sliding bearing 26 are communicated through the fourth water passage so that water in the rotor chamber 241 near one end of the support plate 23 can enter one end of the rotor chamber 241 far from the support plate 23 through the fourth water passage. Meanwhile, the water in the fourth water channel plays a role in heat dissipation and cooling of the rear sliding bearing 26.

Specifically, the front and rear sliding

bearings

25 and 26 are made of polytetrafluoroethylene or graphite material. The front sliding bearing 25 and the rear sliding bearing 26 have the characteristics of self-lubrication, dry burning prevention, wear resistance, acid resistance, oil resistance and the like. When no water idles in the water pump, the problem of failure of equipment parts caused by temperature rise can be prevented, and the reliability of the water pump is improved.

Specifically, the first water passage 230 is plural, a bearing seat is provided between the front sliding bearing 25 and the support plate 23, and the plural first water passage 230 are distributed at intervals along the circumference of the bearing seat. It can be understood that the bearing seat is used for installing and fixing the front sliding bearing 25, the plurality of first water passing channels 230 are distributed along the periphery of the bearing seat, and the bearing seat can be cooled and radiated by water circulating in the first water passing channels 230, so that the radiating effect of the peripheral area of the front sliding bearing 25 is improved.

Specifically, the plurality of first water passing channels 230 are distributed annularly, and the first water passing channels 230 are disposed adjacent to the peripheral wall of the support sleeve 24. It can be understood that the first water passing channel 230 is disposed at a side close to the water outlet 12, when the water pump works, water at the position of the water outlet 12 is continuously pressed into the water conveying pipeline connected to the water outlet 12, and the outlet end of the second water passing channel 222 is in a negative pressure state, which is beneficial to enabling water in the pump room 10 to sequentially pass through the first water passing channel 230, the rotor chamber 241 and the second water passing channel 222 to circularly enter the pump room 10, thereby ensuring the heat exchange efficiency between the motor rotor 22 and the water.

Specifically, the impeller 3 includes a base plate 31 and blades 32 disposed on the base plate 31, the base plate 31 is connected to the ceramic shaft 220, the base plate 31 is spaced from the support plate 23, so that a return passage is formed between the base plate 31 and the support plate 23, and the return passage is respectively communicated with the first water passing passage 230 and the pump room 10. It can be understood that the spaced region between the base plate 31 and the support plate 23 forms a return channel through which water in the pump chamber 10 enters the first water passage 230 and passes through the first water passage 230 into the rotor chamber 241. This structure is advantageous in ensuring the circulation of water between the rotor chamber 241 and the pump room 10 to promote the heat dissipation to the motor rotor 22.

Specifically, one end of the motor stator 21 away from the support plate 23 is provided with a driving circuit, and the driving circuit is a hall-free induction type brushless motor driving circuit. The water pump is operated in a stepless frequency conversion mode through the driving circuit, and the operation efficiency is improved.

Specifically, the driving circuit is potted with epoxy resin. In this embodiment, utilize the epoxy embedment with electrified components such as motor stator 21, drive circuit, promote sealed and insulating properties, guarantee the reliability of this water pump dive during operation.

Specifically, the water pump further comprises a filter cover 4, and the filter cover 4 covers the water inlet 11. The filtering cover 4 is used for filtering water entering the pump room 10, and prevents impurities from entering the pump room 10 to damage the blades 32 and block the water conveying pipeline.

The remarkable effects of the embodiment are as follows: the motor rotor 22 is arranged in the rotor chamber 241, the first water passing channel 230 is arranged on the supporting plate 23, the second water passing channel 222 is arranged on the ceramic shaft 220, the pump room 10 and the rotor chamber 241 are communicated through the first water passing channel 230 and the second water passing channel 222, water circulates between the pump room 10 and the rotor chamber 241 to dissipate heat and cool the motor rotor 22, and the motor rotor has the advantages of being good in heat dissipation performance and high in reliability.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A water pump for aquatic or horticultural use comprising:

the motor part comprises a motor shell, a motor stator, a motor rotor and a supporting seat, wherein the motor shell is provided with a containing cavity, the motor shell is connected with the volute part in a sealing mode, the supporting seat comprises a supporting plate and a supporting sleeve perpendicular to the supporting plate, the supporting plate is arranged between the volute part and the motor shell, the pump room and the containing cavity are respectively located on two sides of the supporting plate, the supporting sleeve is located in the containing cavity and is fixedly connected with the motor shell, the motor stator is sleeved on the periphery of the supporting sleeve, a rotor chamber is formed between the supporting sleeve and the supporting plate, the motor rotor is rotatably arranged in the rotor chamber, and a first end of the motor rotor penetrates through the supporting plate and extends into the pump room;

the impeller is arranged at the first end of the motor rotor;

2. An aquarium or horticultural water pump as claimed in claim 1, wherein the rotor chamber is provided with a rear sliding bearing at an end thereof remote from the support plate, a front sliding bearing is provided between the support plate and the ceramic shaft, the ceramic shaft is rotatably provided on the front sliding bearing and the rear sliding bearing, a bearing damping sleeve is sleeved on the peripheral portions of the front sliding bearing and the rear sliding bearing, a third water passing channel is provided on the bearing damping sleeve corresponding to the rear sliding bearing, and the third water passing channel is communicated with the second water passing channels of the rotor chamber and the ceramic shaft.

3. An aquarium or garden water pump as defined in claim 2, wherein the rear slide bearing is provided with a fourth water passage communicating with the rotor chamber.

4. An aquarium or garden water pump as defined in claim 2, wherein the first water passage is provided in plurality, a bearing seat is provided between the front sliding bearing and the support plate, and the plurality of first water passages are spaced along a circumference of the bearing seat.

5. An aquarium or garden water pump as defined in claim 4, wherein the plurality of first water passing channels are distributed in a ring shape and are disposed adjacent to the circumferential wall of the support sleeve.

6. An aquarium or garden water pump as defined in claim 2, wherein the impeller includes a base plate connected to the ceramic shaft and a vane provided on the base plate, the base plate being spaced apart from the support plate such that a return passage is formed between the base plate and the support plate, the return passage being in communication with the first water passage and the pump room, respectively.

7. An aquarium or garden water pump as defined in claim 1, wherein the motor stator is provided with a driving circuit on a side thereof away from the support plate, the driving circuit being a hall-less induction type brushless motor driving circuit.

8. An aquarium or horticultural water pump as claimed in claim 7, wherein the drive circuit is potted in epoxy.

9. An aquarium or horticultural water pump as claimed in claim 1 further including a filter shroud, the filter shroud being located at the water inlet.