CN116464644A - Water pump with self-priming function - Google Patents

Water pump with self-priming function Download PDF

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Publication number
CN116464644A
CN116464644A CN202310326371.8A CN202310326371A CN116464644A CN 116464644 A CN116464644 A CN 116464644A CN 202310326371 A CN202310326371 A CN 202310326371A CN 116464644 A CN116464644 A CN 116464644A
Authority
CN
China
Prior art keywords
self
impeller
rotor
priming
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310326371.8A
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Chinese (zh)
Inventor
刘灿
程祖意
张娟丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Shenpeng Electronics Co ltd
Original Assignee
Dongguan Shenpeng Electronics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Shenpeng Electronics Co ltd filed Critical Dongguan Shenpeng Electronics Co ltd
Priority to CN202310326371.8A priority Critical patent/CN116464644A/en
Publication of CN116464644A publication Critical patent/CN116464644A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/02—Self-priming pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a water pump with a self-priming function, which comprises a pump shell, a pump cover, a shaft core, a rotor assembly, a main impeller, a stator assembly and a self-priming impeller, wherein the pump cover is arranged on the pump shell; the shaft core is arranged along the axial direction of the pump cover and the pump shell, and extends from the rotor chamber to the direction of the cavity until entering the water inlet of the pump cover, and the self-priming impeller is sleeved on a section of the shaft core positioned in the water inlet; the stator assembly can magnetically couple and interlock the rotor assembly to rotate in the rotor chamber; when the rotor assembly rotates, the main impeller can be linked to rotate in the cavity, and the self-priming impeller is linked to rotate in the water inlet through the shaft core, so that liquid at the water inlet is sucked into the cavity through the self-priming impeller. According to the invention, the liquid at the water inlet can be sucked into the cavity through the rotating self-priming impeller, and then stable water flow is formed under the driving of the main impeller, so that the liquid level can normally run without finishing initial water supply as long as the liquid level can be contacted with the self-priming impeller even though the liquid level is shallower.

Description

Water pump with self-priming function
Technical Field
The invention relates to the technical field of electronic water pumps, in particular to a water pump with a self-priming function.
Background
The electronic water pump has higher output efficiency and can realize accurate flow control, so that the electronic water pump is widely applied to automobiles, household appliances and industrial equipment, and especially, a new energy automobile is generally provided with two or more electronic water pumps, the electronic water pumps are power sources of the whole cooling system of the new energy automobile, and power batteries, driving motors and the like of the new energy automobile all need to drive cooling liquid to be cooled circularly by means of the electronic water pumps.
A barrier water pump is an important type of electronic water pump that uses a pump cover to shield the impeller, causing the impeller to operate in a semi-enclosed chamber.
The shielding type water pump with the structure is characterized in that the water inlet of the shielding type water pump is arranged along the axial direction, and when the shielding type water pump needs to be used in an inverted mode, the impeller of the shielding type water pump is far away from the liquid level, so that liquid cannot be sucked into the water inlet, and the normal operation can be realized only by completing initial water supply.
Disclosure of Invention
The invention aims to provide a water pump with a self-priming function, which has the self-priming function and can normally operate without finishing initial water supply.
In order to achieve the above purpose, the present invention provides the following technical solutions: a water pump with self-priming function comprises a pump shell, a pump cover, a shaft core, a rotor assembly, a main impeller, a stator assembly and a self-priming impeller; a rotor chamber is formed in the pump shell, a cavity is formed in the pump cover, and the pump cover and the pump shell are combined with each other, so that the rotor chamber and the cavity are shielded; the pump cover is provided with a water inlet and a water outlet, the water inlet and the water outlet are both communicated to the cavity, and the water inlet is arranged along the axial direction of the pump cover and the pump shell; the shaft core is arranged along the axial direction of the pump cover and the pump shell, and extends from the rotor chamber to the direction of the cavity until entering the water inlet of the pump cover, and the self-priming impeller is sleeved on a section of the shaft core, which is positioned in the water inlet; the rotor assembly is sleeved on the shaft core and is positioned in the rotor chamber of the pump shell, and the main impeller is arranged on the rotor assembly and is positioned in the chamber of the pump cover; the stator assembly is sleeved outside the rotor chamber, so that the stator assembly can magnetically couple and link the rotor assembly to rotate in the rotor chamber; when the rotor assembly rotates, the main impeller can be linked to rotate in the cavity, and the self-priming impeller is linked to rotate in the water inlet through the shaft core, so that liquid at the water inlet is sucked into the cavity through the self-priming impeller.
In the technical scheme, a shaft core seat is formed in the rotor chamber, a shaft core support is formed on the inner side of the water inlet by the pump cover, and the shaft core seat and the shaft core support are mutually aligned; at least a portion of the mandrel penetrates the mandrel receptacle and at least another portion of the mandrel penetrates the mandrel holder.
In the above technical scheme, the rotor assembly comprises a rotor bracket, a magnetic ring and a bearing; one end of the rotor bracket forms an impeller fixing table, and the main impeller is fixed on the impeller fixing table of the rotor bracket; the magnetic ring is sleeved on the rotor bracket, and the bearing is arranged in the rotor bracket in a penetrating way; the bearing sleeve of the rotor assembly is arranged on the shaft core, and the shaft core penetrates through the rotor support and the main impeller.
In the above technical solution, the rotor assembly further includes a thrust washer; the thrust washer is located between the rotor support and the shaft core support.
In the above technical scheme, the self-priming impeller comprises a shaft sleeve type body which is used for sleeving the self-priming impeller on the shaft core, and a plurality of fan blade type blades which are distributed along the circumferential direction of the shaft sleeve type body.
In the above technical scheme, the blade type blade is a wave type blade or a straight type blade.
In the technical proposal, the distance between the top end of the self-priming impeller and the end face of the water inlet is L 1 The depth of the water inlet is L 2 L is then 1 ：L 2 ＝0.1～0.2。
In the above technical scheme, the self-priming impeller has an outer diameter D 1 The inner diameter of the water inlet is D 2 D is then 1 ：D 2 ＝0.65～0.8。
Compared with the prior art, the invention has the beneficial effects that: according to the water pump with the self-priming function, through the rotating self-priming impeller, liquid at the water inlet can be sucked into the cavity, and stable water flow is formed under the driving of the main impeller, so that the water pump can normally operate without finishing initial water supply as long as the liquid level is shallow and can be in contact with the self-priming impeller.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is one of the structural views of the self-priming impeller of the present invention.
Fig. 3 is a second structural view of the self-priming impeller of the present invention.
Fig. 4 is an exploded view of the present invention.
Fig. 5 is a cross-sectional view of the present invention.
Fig. 6 is a top view of the present invention.
The reference numerals are: 1. a pump housing; 11. a rotor chamber; 12. an end cap; 13. a spindle core seat; 2. a pump cover; 21. a water inlet; 22. a water outlet; 23. a shaft core bracket; 24. a chamber; 3. a shaft core; 4. a rotor assembly; 41. a rotor bracket; 411. an impeller fixing table; 42. a magnetic ring; 43. a bearing; 44. a thrust washer; 5. a main impeller; 51. a main blade; 6. a stator assembly; 7. self-priming impeller; 71. a sleeve type body; 72. a fan blade type blade.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides a water pump with a self-priming function, which can be applied to automobiles, household appliances and industrial equipment to drive liquid media such as cooling liquid, condensed water, wastewater and the like to flow from one place to another place.
Referring to fig. 1 and fig. 4-6, the water pump with self-priming function of the present embodiment includes a pump housing 1, a pump cover 2, a shaft core 3, a rotor assembly 4, a main impeller 5, a stator assembly 6, and a self-priming impeller 7.
The pump shell 1 and the pump cover 2 are half shells made of corrosion-resistant metal or engineering plastic, and the shapes of the two half shells are matched and can be combined into a whole; the shaft core 3 is a cylindrical metal rotating shaft, and the surface of the shaft core is smooth; the main impeller 5 is made of corrosion-resistant metal or engineering plastic, and a plurality of main blades 51 are arranged on the main impeller 5 and used for driving water flow; the stator assembly 6 is an electromagnetic coil assembly with a driving circuit board, and can generate a rotating magnetic field in an inner ring of the stator assembly; the self-priming impeller 7 is also an impeller made of corrosion-resistant metal or engineering plastic and is also used for driving water flow.
A rotor chamber 11 is formed in the pump shell 1, a cavity 24 is formed in the pump cover 2, the pump cover 2 and the pump shell 1 are combined with each other, so that the rotor chamber 11 and the cavity 24 are shielded, and in the embodiment, the pump cover 2 and the pump shell 1 are mutually fixed through screws; the pump cover 2 is provided with a water inlet 21 and a water outlet 22, the water inlet 21 and the water outlet 22 are tubular connectors which are integrally formed on the pump cover 2, the water inlet 21 and the water outlet 22 are communicated to the cavity 24, and the water inlet 21 is arranged along the axial direction of the pump cover 2 and the pump shell 1.
The shaft core 3 is arranged along the axial direction of the pump cover 2 and the pump shell 1, and the shaft core 3 starts from the rotor chamber 11 and extends towards the chamber 24 until entering the water inlet 21 of the pump cover 2; the self-priming impeller 7 is sleeved on a section of the shaft core 3 positioned in the water inlet 21, and in fact, the self-priming impeller 7 is in interference fit with the shaft core 3 and is connected with the shaft core by a key.
The rotor assembly 4 is sleeved on the shaft core 3 and is positioned in the rotor chamber 11 of the pump shell 1, and the main impeller 5 is mounted on the rotor assembly 4 and is positioned in the chamber 24 of the pump cover 2.
The stator assembly 6 is sleeved outside the rotor chamber 11, so that the stator assembly 6 can magnetically couple and link the rotor assembly 4 to rotate in the rotor chamber 11, namely, when the stator assembly 6 is electrified and generates a rotating magnetic field, the rotor assembly 4 can rotate in the rotor chamber 11 under the action of the rotating magnetic field; in this embodiment, an end cover 12 is disposed at the rear end of the pump housing to shield the stator assembly 6 and prevent the stator assembly 6 from dust and water.
When the rotor assembly 4 rotates, the main impeller 5 can be linked to rotate in the chamber 24, and the self-priming impeller 7 is linked to rotate in the water inlet 21 through the shaft core 3, so that liquid at the water inlet 21 is sucked into the chamber 24 through the self-priming impeller 7.
Referring to fig. 2 and 3, the self-priming impeller 7 includes a sleeve-type body 71 for sleeving itself on the shaft core 3, and a plurality of fan-type blades 72 arranged along the circumferential direction of the sleeve-type body 71; specifically, the sleeve-shaped body 71 is sleeve-shaped, which is adapted to be interference-fitted and key-connected with the shaft core 3, and the fan-blade-shaped blades 72 are provided with a plurality of pieces (for example, four pieces in the present embodiment) around the sleeve-shaped body 71 and are each integrally formed with the sleeve-shaped body 71.
More specifically, the fan blade type blade 72 is a wave type blade or a bar type blade.
Specifically, a spindle seat 13 is formed in the rotor chamber 11, and the spindle seat 13 is integrally formed with the pump casing 1 and is suitable for inserting the spindle 3; the pump cover 2 forms a shaft core support 23 at the inner side of the water inlet 21, and the shaft core support 23 and the pump cover 2 are integrally formed and are suitable for inserting the shaft core 3; the axle core seat 13 and the axle core bracket 23 are aligned with each other, namely, after the pump cover 2 and the pump shell 1 are combined with each other, the axle core seat 13 and the axle core bracket 23 are aligned with each other in the axial direction of the pump cover 2 and the pump shell 1 to form a straight line; at least a portion of the mandrel 3 penetrates the mandrel holder 13 and at least another portion of the mandrel 3 penetrates the mandrel holder 23. In some possible embodiments, the surface of the mandrel 3 is smooth and the inner walls of the mandrel holder 13 and the mandrel holder 23 are also smooth, enabling the mandrel 3 to rotate relative to the mandrel holder 13 and the mandrel holder 23. In other possible embodiments, self-lubricating bearings such as bushings are provided between the mandrel 3 and the mandrel holder 13 and between the mandrel 3 and the mandrel holder 23.
Further specifically, the rotor assembly 4 includes a rotor support 41, a magnetic ring 42 and a bearing 43, wherein the rotor support 41 is a cylindrical support made of engineering plastic, the magnetic ring 42 is a circular permanent magnet, and the bearing 43 is one of a self-lubricating shaft sleeve, a graphite bearing and a ceramic bearing; one end of the rotor bracket 41 forms an impeller fixing table 411, the impeller fixing table 411 and the rotor bracket 41 are integrally formed, the shape of the impeller fixing table is matched with that of the main impeller 5, the main impeller 5 is fixed on the impeller fixing table 411 of the rotor bracket 41, and in the embodiment, the main impeller 5 is fixed on the impeller fixing table 411 by an ultrasonic welding mode; the magnetic ring 42 is sleeved on the rotor support 41, the bearing 43 is arranged in the rotor support 41 in a penetrating way, in practice, the magnetic ring 42 and the bearing 43 are arranged in an injection mold of the rotor support 41, and the rotor support 41 is formed in an in-mold injection molding way, namely, the rotor support 41, the magnetic ring 42 and the bearing 43 are combined into a rotor assembly 4; the bearing 43 of the rotor assembly 4 is fitted over the shaft core 3 to support the rotor assembly 4 in the rotor chamber 11, and the shaft core 3 passes through the rotor support 41 and the main impeller 5.
Further, the rotor assembly 4 further comprises a thrust washer 44, the thrust washer 44 being a metal or ceramic plate; a thrust washer 44 is located between the rotor support 41 and the spindle support 23, and the spindle 3 also passes through this thrust washer 44.
Further, the distance from the top end of the self-priming impeller 7 to the end face of the water inlet 21 is L 1 The depth of the water inlet 21 is L 2 L is then 1 ：L 2 =0.1 to 0.2, and is preferably L 1 ：L 2 =0.148; with this arrangement, the self-priming impeller 7 is not too close to the end face of the water inlet 21 to affect the matching of the electronic water pump and other devices, and the self-priming impeller 7 is not too far from the end face of the water inlet 21 to affect the self-priming capability.
Further, the external diameter of the self-priming impeller 7 (the distance between the outermost ends of the two opposite blade type blades 72 in the horizontal plane) is D 1 The inner diameter of the water inlet 21 is D 2 D is then 1 ：D 2 =0.65 to 0.8, and preferably D 1 ：D 2 =0.73; with this arrangement, an optimal self-priming capability can be obtained.
In the water pump with the self-priming function of the embodiment, after the stator assembly 6 is electrified, a rotating magnetic field is generated in the inner ring of the stator assembly, and the rotor assembly 4 starts to rotate under the action of the rotating magnetic field and drives the main impeller 5 to rotate; meanwhile, as the bearing 43 is arranged between the rotor assembly 4 and the shaft core 3, the shaft core 3 is driven by the rotor assembly 4 to rotate in a differential speed, and at the moment, the self-priming impeller 7 also rotates in the differential speed along with the shaft core 3; through the self-priming impeller 7, the liquid at the water inlet 21 can be sucked into the cavity 24, and then stable water flow is formed under the drive of the main impeller 5, so that the liquid level can be in contact with the self-priming impeller 7 even though the liquid level is shallow, and the normal operation can be realized without the need of completing initial water supply.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The water pump with the self-priming function is characterized by comprising a pump shell, a pump cover, a shaft core, a rotor assembly, a main impeller, a stator assembly and a self-priming impeller;
a rotor chamber is formed in the pump shell, a cavity is formed in the pump cover, and the pump cover and the pump shell are combined with each other, so that the rotor chamber and the cavity are shielded; the pump cover is provided with a water inlet and a water outlet, the water inlet and the water outlet are both communicated to the cavity, and the water inlet is arranged along the axial direction of the pump cover and the pump shell;
the shaft core is arranged along the axial direction of the pump cover and the pump shell, and extends from the rotor chamber to the direction of the cavity until entering the water inlet of the pump cover, and the self-priming impeller is sleeved on a section of the shaft core, which is positioned in the water inlet;
the rotor assembly is sleeved on the shaft core and is positioned in the rotor chamber of the pump shell, and the main impeller is arranged on the rotor assembly and is positioned in the chamber of the pump cover;
the stator assembly is sleeved outside the rotor chamber, so that the stator assembly can magnetically couple and link the rotor assembly to rotate in the rotor chamber;
when the rotor assembly rotates, the main impeller can be linked to rotate in the cavity, and the self-priming impeller is linked to rotate in the water inlet through the shaft core, so that liquid at the water inlet is sucked into the cavity through the self-priming impeller.
2. The water pump with self-priming function according to claim 1, wherein: a shaft core seat is formed in the rotor chamber, a shaft core support is formed at the inner side of the water inlet by the pump cover, and the shaft core seat and the shaft core support are mutually aligned;
at least a portion of the mandrel penetrates the mandrel receptacle and at least another portion of the mandrel penetrates the mandrel holder.
3. The water pump with self-priming function according to claim 2, wherein: the rotor assembly comprises a rotor bracket, a magnetic ring and a bearing;
one end of the rotor bracket forms an impeller fixing table, and the main impeller is fixed on the impeller fixing table of the rotor bracket; the magnetic ring is sleeved on the rotor bracket, and the bearing is arranged in the rotor bracket in a penetrating way;
the bearing sleeve of the rotor assembly is arranged on the shaft core, and the shaft core penetrates through the rotor support and the main impeller.
4. A water pump with self priming function according to claim 3, wherein: the rotor assembly further includes a thrust washer;
the thrust washer is located between the rotor support and the shaft core support.
5. The water pump with self-priming function according to claim 1, wherein: the self-priming impeller comprises a shaft sleeve type body and a plurality of fan blade type blades, wherein the shaft sleeve type body is used for sleeving the self-priming impeller on the shaft core, and the fan blade type blades are distributed along the circumferential direction of the shaft sleeve type body.
6. The water pump with self-priming function according to claim 5, wherein: the fan blade type blades are wave type blades or straight type blades.
7. The water pump with self-priming function according to claim 1, 5 or 6, wherein: the distance between the top end of the self-priming impeller and the end face of the water inlet is L 1 The depth of the water inlet is L 2 L is then 1 ：L 2 ＝0.1～0.2。
8. The water pump with self-priming function according to claim 1, 5 or 6, wherein: the external diameter of the self-priming impeller is D 1 The inner diameter of the water inlet is D 2 D is then 1 ：D 2 ＝0.65～0.8。
CN202310326371.8A 2023-03-30 2023-03-30 Water pump with self-priming function Pending CN116464644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310326371.8A CN116464644A (en) 2023-03-30 2023-03-30 Water pump with self-priming function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310326371.8A CN116464644A (en) 2023-03-30 2023-03-30 Water pump with self-priming function

Publications (1)

Publication Number Publication Date
CN116464644A true CN116464644A (en) 2023-07-21

Family

ID=87174400

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310326371.8A Pending CN116464644A (en) 2023-03-30 2023-03-30 Water pump with self-priming function

Country Status (1)

Country Link
CN (1) CN116464644A (en)

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Address after: No. 30 Dapu Industrial Street, Changping Town, Dongguan City, Guangdong Province, 523000

Applicant after: Guangdong Shenpeng Technology Co.,Ltd.

Address before: 523000 Gangzi Dapu Industrial Zone, Changping Town, Dongguan City, Guangdong Province

Applicant before: DONGGUAN SHENPENG ELECTRONICS Co.,Ltd.

Country or region before: China

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