CN110701065A

CN110701065A - High-efficiency silent permanent magnet direct current brushless shielding pump of integrated controller

Info

Publication number: CN110701065A
Application number: CN201910961550.2A
Authority: CN
Inventors: 梁泊山; 黄林森; 卢友文; 黄国强
Original assignee: Ningde Times Motor Technology Co Ltd
Current assignee: Ningde Times Motor Technology Co Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-01-17

Abstract

The invention discloses a high-efficiency silent permanent magnet direct current brushless shielding pump of an integrated controller, which comprises a pump body and a permanent magnet shielding direct current brushless motor, wherein the permanent magnet shielding direct current brushless motor comprises a stator component, a rotor component and a controller; the stator assembly comprises a shell, and a winding stator is arranged on the inner wall of the shell; the rotor assembly comprises a fixed shaft, the left side and the right side of the fixed shaft are respectively connected with water lubrication bearings, a rotor shaft is connected between the two water lubrication bearings, the left end of the rotor shaft is connected with an impeller, a rotor core matched with a winding stator is connected onto the rotor shaft, and the surface of the rotor core is connected with a layer of rotor shielding sleeve. The self-lubricating water channel is designed, so that a self-lubricating effect is realized; due to the installation of the integrated controller, the high assembly operation efficiency of the canned motor pump is ensured, and the cost performance of the product is improved; stator module and rotor subassembly adopt heat-conducting glue encapsulating one-piece structure respectively, and the heat conduction is effectual, plays anticorrosion and shielding effect simultaneously, guarantees the high-efficient operation of canned motor pump.

Description

High-efficiency silent permanent magnet direct current brushless shielding pump of integrated controller

Technical Field

The invention relates to the technical field of pumps, in particular to a high-efficiency silent permanent magnet direct current brushless shielding pump of an integrated controller.

Background

The shield pump is a leakage-free pump formed by a pump and a shield motor, is important equipment for conveying special cooling liquid, toxic liquid (such as toxin and smelly liquid), dangerous liquid (such as corrosive liquid, explosive liquid, flammable liquid and volatile liquid) and valuable liquid due to the advantages of no leakage, small volume, low noise and the like, and is widely applied to numerous occasions in the fields of petrochemical industry, national defense and military industry, aerospace, air conditioning refrigeration, cooling liquid cooling systems, medical food, atomic energy and the like.

In the prior art, a controller and a pump body of a shield pump are separated and independent, so that the controller is easy to drag in the carrying process, the controller is separated from the pump body, and the use is influenced; in addition, the heat conduction effect of the shield pump in the prior art is poor.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the high-efficiency mute permanent magnet direct current brushless canned motor pump with the integrated controller, which has the advantages of simple structure, convenience in operation and practicability.

The invention is realized by the following modes:

a high-efficiency mute permanent magnet direct current brushless shielding pump integrated with a controller comprises a pump body and a permanent magnet shielding direct current brushless motor which are fixed with each other, wherein the permanent magnet shielding direct current brushless motor comprises a stator component, a rotor component matched with the stator component and the controller, and the stator component is electrically connected with the controller; an impeller cavity is arranged in the pump body, a liquid inlet and a liquid outlet are arranged on the pump body and are respectively communicated with the impeller cavity, the stator assembly comprises a casing connected with the pump body, an annular winding stator is arranged on the inner wall of the casing and is electrically connected with the controller; the surface of the winding stator is connected with a layer of stator shielding sleeve, the right side of the casing is provided with a mounting groove for mounting a controller,

the rotor subassembly is including connecting the fixed axle in the casing, the left and right sides of fixed axle is connected with water lubricated bearing respectively, is connected with the rotor shaft between two water lubricated bearings, the rotor shaft is rotatable for the fixed axle through water lubricated bearing, the left end of rotor shaft is connected with the impeller, the impeller is located the impeller intracavity, be connected with the rotor core with winding stator matched with on the rotor shaft, the surface of rotor core is connected with one deck rotor housing.

Furthermore, first heat-conducting glue is filled among the stator shielding sleeve, the winding stator and the machine shell, so that the stator shielding sleeve, the winding stator and the machine shell form a whole.

Furthermore, second heat-conducting glue is filled among the rotor shielding sleeve, the rotor iron core and the rotor shaft, so that the rotor shielding sleeve, the rotor iron core and the rotor shaft form a whole.

Further, the inner wall of the water-lubricated bearing is provided with a self-lubricating water channel.

Furthermore, a cover plate is connected to the mounting groove.

Furthermore, the casing is provided with a three-phase outgoing line hole for the penetration of a three-phase outgoing line of the winding stator and a temperature sensor lead hole for the penetration of a temperature sensor outgoing line.

Further, the fixed shaft is connected in the machine shell through a shaft sleeve.

Further, a balance ring is connected to the rotor shaft.

Furthermore, the bottom of the machine shell is connected with a bottom foot.

Furthermore, the material of the rotor shaft is 316 stainless steel; the water lubrication bearing is made of polyether-ether-ketone added with fiber; the impeller and the pump body are made of 316 stainless steel; the shaft sleeve is made of ceramic; the fixed shaft is made of ceramic.

The invention has the beneficial effects that: the structure is reasonable, the design is ingenious, the cost is saved, and the self-lubricating effect is realized by designing the self-lubricating water channel; due to the installation of the integrated controller, the high assembly operation efficiency of the canned motor pump is ensured, and the cost performance of the product is improved; stator module and rotor subassembly adopt heat-conducting glue encapsulating one-piece structure respectively, and the heat conduction is effectual, guarantees the high-efficient operation of canned motor pump.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of a stator assembly configuration of the present invention;

FIG. 3 is a side view of a stator assembly configuration of the present invention;

fig. 4 is a schematic view of the structure of the rotor assembly of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

a high-efficiency mute permanent magnet direct current brushless shielding pump integrating a controller is disclosed, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, and comprises a pump body 1 and a permanent magnet shielding direct current brushless motor which are fixed with each other, wherein the permanent magnet shielding direct current brushless motor comprises a stator component 7, a rotor component 4 matched with the stator component 7 and a controller 8, and the stator component 7 is electrically connected with the controller 8; the pump comprises a pump body 1 and is characterized in that an impeller cavity 11 is arranged in the pump body 1, a liquid inlet 12 and a liquid outlet 13 are arranged on the pump body 1, and the liquid inlet 12 and the liquid outlet 13 are respectively communicated with the impeller cavity 11.

Specifically, the stator assembly 7 includes a casing 71 connected to the pump body 1, an annular winding stator 72 is disposed on an inner wall of the casing 71, and the winding stator 72 is electrically connected to the controller 8; the specific structure of the winding stator 72 is conventional and will not be described in detail herein; the surface of the winding stator 72 is connected with a layer of stator shielding sleeve 73, a first heat-conducting glue 74 is filled among the stator shielding sleeve 73, the winding stator 72 and the machine shell 71, so that the stator shielding sleeve 73, the winding stator 72 and the machine shell 71 form a whole, the effects of protection, isolation, heat conduction and insulation on the winding stator 72 are achieved, the first heat-conducting glue 74 has an insulation effect at the same time, the conventional stator winding immersion paint is omitted, and the effects of high strength, integral sealing and high insulation strength are achieved.

Further, a mounting groove 75 for mounting the controller 8 is formed at the right side of the housing 71, and a cover plate 76 is connected to the mounting groove 75 for protecting the controller 8.

Furthermore, a three-phase lead wire hole 77 for a three-phase lead wire of the winding stator 72 to pass through and a temperature sensor lead wire hole 78 for a temperature sensor lead wire to pass through are formed in the case 71, so that the lead wires can be conveniently led out.

Specifically, the rotor assembly 4 comprises a fixed shaft 3 connected inside the casing 71 through a bushing 41, the bushing 41 and the fixed shaft 3 are connected together through a flat head and do not rotate; the fixed shaft 3 is made of ceramics, the left side and the right side of the fixed shaft are respectively connected with a water lubrication bearing 42, a rotor shaft 43 is connected between the two water lubrication bearings 42, the rotor shaft 43 is hollow, the outer ring of the water lubrication bearing 42 is connected with the inner wall of the rotor shaft 43 in an interference fit manner, and the inner wall of the water lubrication bearing 42 is provided with a self-lubricating water channel 421, so that the strength is ensured and the self-lubricating requirement is met; the rotor shaft 43 can rotate relative to the fixed shaft 3 through the water lubricating bearing 42, the left end of the rotor shaft 43 is connected with the impeller 44 in an interference fit mode, the impeller 44 is located in the impeller cavity 11, and the impeller 44 works to drive a medium to enter from the liquid inlet 12 and flow out from the liquid outlet 13; the rotor shaft 43 is connected with a rotor core 45 matched with the winding stator 72, and the specific structure of the rotor core 45 is conventional and will not be described in detail herein; the surface of rotor core 45 is connected with one deck rotor housing 46, it has second heat-conducting glue 47 to irritate between rotor housing 46, rotor core 45 and the rotor shaft 43 for rotor housing 46, rotor core 45 and rotor shaft 43 three form a whole, reach protection, isolation, heat conduction, insulating effect to rotor core 45, and second heat-conducting glue 47 has insulating effect simultaneously, saves conventional stator winding paint dipping, has high strength, integral seal, high dielectric strength's effect.

Further, in order to protect the rotor core 45 from being more stable during operation, a balance ring 48 is connected to the rotor shaft 43.

Further, the rotor shaft 43 is made of 316 stainless steel, the water lubrication bearing 42 is made of fiber-added polyetheretherketone, so that a silencing effect is achieved, the impeller 44 and the pump body 1 are made of 316 stainless steel, and the shaft sleeve 41 is made of ceramic, so that corrosion resistance and shielding effects can be achieved.

Further, in order to facilitate the installation of the permanent magnet canned motor pump, a bottom foot 79 is connected to the bottom of the casing 71.

During specific work, after the winding stator 72 is switched on with alternating current, the winding stator 72 generates magnetism, the rotor core 45 is stressed, the rotor core 45 rotates when the winding stator 72 is switched on with external alternating current, so that the rotor shaft 43 is driven to rotate, the rotor shaft 43 drives the impeller 44 to rotate, and when the impeller 44 rotates, a medium is driven to enter from the liquid inlet 12 and flow out from the liquid outlet 13, and work is completed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency mute type permanent magnet direct current brushless shielding pump integrated with a controller comprises a pump body (1) and a permanent magnet shielding direct current brushless motor which are fixed with each other, wherein the permanent magnet shielding direct current brushless motor comprises a stator component (7), a rotor component (4) and a controller (8), the rotor component (4) is matched with the stator component (7), and the stator component (7) is electrically connected with the controller (8); be equipped with impeller cavity (11) in the pump body (1), be equipped with inlet (12) and liquid outlet (13) on the pump body (1), inlet (12) and liquid outlet (13) are linked together its characterized in that with impeller cavity (11) respectively: the stator assembly (7) comprises a machine shell (71) connected with the pump body (1), the inner wall of the machine shell (71) is provided with an annular winding stator (72), and the winding stator (72) is electrically connected with the controller (8); the surface of the winding stator (72) is connected with a layer of stator shielding sleeve (73), the right side of the machine shell (71) is provided with a mounting groove (75) for mounting the controller (8),

rotor subassembly (4) including connecting fixed axle (3) in casing (71), the left and right sides of fixed axle (3) is connected with water lubricated bearing (42) respectively, is connected with rotor shaft (43) between two water lubricated bearing (42), rotor shaft (43) are rotatable for fixed axle (3) through water lubricated bearing (42), the left end of rotor shaft (43) is connected with impeller (44), impeller (44) are located impeller cavity (11), be connected with on rotor shaft (43) with winding stator (72) matched with rotor core (45), the surface of rotor core (45) is connected with one deck rotor housing (46).

2. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: first heat-conducting glue (74) is filled among the stator shielding sleeve (73), the winding stator (72) and the machine shell (71), so that the stator shielding sleeve (73), the winding stator (72) and the machine shell (71) form a whole.

3. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: and second heat-conducting glue (47) is filled among the rotor shielding sleeve (46), the rotor iron core (45) and the rotor shaft (43), so that the rotor shielding sleeve (46), the rotor iron core (45) and the rotor shaft (43) form a whole.

4. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: and a self-lubricating water channel (421) is arranged on the inner wall of the water lubricating bearing (42).

5. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: the mounting groove (75) is connected with a cover plate (76).

6. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: and the shell (71) is provided with a three-phase outgoing line hole (77) for the three-phase outgoing line of the winding stator (72) to penetrate through and a temperature sensor lead hole (78) for the outgoing line of the temperature sensor to penetrate through.

7. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: the fixed shaft (3) is connected in the shell (71) through a shaft sleeve (41).

8. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: the rotor shaft (43) is connected with a balance ring (48).

9. The high-efficiency silent permanent magnet direct current brushless canned pump with integrated controller according to claim 1, characterized in that: the bottom of the machine shell (71) is connected with a bottom foot (79).

10. The controller-integrated efficient mute permanent magnet dc brushless canned pump according to claim 7, wherein: the rotor shaft (43) is made of 316 stainless steel; the water lubrication bearing (42) is made of fiber-added polyether ether ketone; the impeller (44) and the pump body (1) are made of 316 stainless steel; the shaft sleeve (41) is made of ceramic; the fixed shaft (3) is made of ceramic.