Pump motor with stator support sleeve

Abstract

The utility model discloses a pump motor with a stator support sleeve, which comprises a rotor shaft, a rotor fixedly connected with the rotor shaft, and a stator sleeved on the outer peripheral side of the rotor in a clearance manner, the stator support sleeve is arranged on the inner peripheral surface of the stator, and the stator support sleeve is in clearance fit with the rotor. As the supporting sleeve is tightly arranged on the inner surface of the stator, the poured glue cannot emerge out of the inner surface of the stator, the processing procedure of the inner surface of the stator after glue pouring in the prior art can be omitted, and the manufacturing cost is reduced; due to the abutting support of the support sleeve, the glue particles which are subsequently aged and cracked can be kept in the original place and do not run into the gap between the stator and the rotor, so that the damage of the aged and falling glue particles to the coil is avoided, and the service life of the pump motor is greatly prolonged; and due to the existence of the supporting sleeve, the plurality of iron core units are arranged in the annular iron core frame in sequence very conveniently and quickly, so that the labor productivity of operators can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of liquid conveying devices, in particular to a pump motor with a stator supporting sleeve. Background Art

[0002] The stator of a conventional pump motor uses an integral iron core with coils wound on it. Due to the low slot fill rate, the motor with the same output power is relatively large in size, which restricts its use in compact environments and has a relatively high manufacturing cost. To solve this problem, the conventional art generally makes the iron core into a split structure, fixes and connects multiple split iron core units with coils wound on a ring-shaped iron core frame with special glue, and then performs corresponding treatment on the glue that emerges from the inner surface of the stator. For example, the invention patent with announcement number CN103563218B authorized and announced by the State Intellectual Property Office on March 2, 2016, the name of the patent is "Water pump motor and water pump using a waterproof stator". The technical solution of the patent includes a stator and an internal rotor arranged on the inner side of the stator, the stator includes a stator core, the inner periphery of which is connected to each other in a ring shape to realize an outer winding, a plurality of protrusions are formed on the stator core in a radially extending manner, an insulating bobbin surrounds the protrusions of the stator core respectively, and is formed in a ring shape that surrounds the inner periphery of the stator core as a whole, the inner side surface of the bobbin acts as a sealing cover, and the outer side surface defines the area of ​​the coil winding portion; a coil is wound on the outer periphery of the bobbin, and an annular back yoke, the inner periphery of which is connected to the protrusion of the stator core The rotor has a plurality of ferrite magnets facing the inner side of the bobbin; the bobbin includes a plurality of coil winding parts, a protruding part surrounding the stator core, for winding the coil, an outer flange, a protruding part formed at the end of each coil winding part, an inner side defining the area of ​​the coil winding part, an outer side crimped and connected with the inner peripheral surface of the back yoke, and an annular inner flange, an annular shape that surrounds the inner peripheral part of the stator core as a whole, the inner side acts as a sealing cover, and the outer side defines the area of ​​the coil winding part; the annular inner flange is formed in a cup shape with a hollow part for the rotor to be inserted, and the lower end face of the annular inner flange has a bearing placement groove in the center, and the bearing placement groove has a bearing built in the bearing, and the bearing is used to support the drive shaft combined with the central part of the rotor. Since the motor will heat up when working, the glue used to fix the core unit is easy to age, and the aged glue is easy to crack and fall off. The fallen glue particles will damage the coil between the stator and the rotor, and even cause the pump motor to short-circuit and be damaged. Summary of the invention

[0003] In order to overcome the above defects, the technical problem to be solved by the utility model is: to provide a pump motor with a stator support sleeve, so that it can prevent the damage to the coil caused by aging and falling glue particles, thereby greatly extending the service life of the pump motor.

[0004] In order to solve the technical problem, the technical solution of the utility model is: a pump motor with a stator support sleeve, which includes a rotor shaft, a rotor fixedly connected to the rotor shaft, and a stator gap-sleeved on the outer peripheral side of the rotor, and the inner peripheral surface of the stator is provided with a stator support sleeve, and the stator support sleeve is gap-matched with the rotor. Since the inner surface of the annular stator formed by multiple split core units is tightly matched with a support sleeve with a thickness of 0.5mm to 2mm, the glue will not come out of the inner surface of the stator when pouring glue, so that the treatment process of the inner surface of the stator after pouring glue in the prior art can be omitted, and the manufacturing cost can be reduced; due to the close support of the support sleeve, the subsequent aging and cracking glue particles can still be retained in the original place, and will not run into the gap between the stator and the rotor, thereby preventing the damage of the aging and falling glue particles to the coil, and can greatly extend the service life of the pump motor; and due to the existence of the support sleeve, it is very convenient and quick to arrange multiple split core units in the annular core frame in sequence, which can significantly improve the labor productivity of the operators.

[0005] As a further technical solution, the rotor shaft is provided with a connecting and fixing plate outside one end of the stator, and the stator support sleeve extends toward one side of the connecting and fixing plate and is turned outward at the position of the connecting and fixing plate. The turning edge can enhance the mechanical strength and positioning of the support sleeve.

[0006] As a further technical solution, a sealing ring is provided between the flange and the connecting and fixing plate, which can play a sealing role and prevent foreign matter from entering the gap between the stator and the rotor through the channel.

[0007] As a further technical solution, the rotor shaft is provided with a water outlet joint on the outer side of the other end of the stator, and the stator support sleeve extends to one side of the water outlet joint and is sleeved with the connecting portion of the water outlet joint. This can play a sealing role and prevent foreign matter from entering the gap between the stator and the rotor through the channel.

[0008] As a further technical solution, the stator support sleeve is sleeved on the outer peripheral side of the connection part of the water outlet node, which can enhance the mechanical strength and roundness of the support sleeve.

[0009] The beneficial effects of the utility model are as follows: since the support sleeve is tightly fitted on the inner surface of the stator, the glue will not come out of the inner surface of the stator when the glue is poured, thus eliminating the process of treating the inner surface of the stator after the glue is poured in the prior art, thereby reducing the manufacturing cost; since the support sleeve is tightly supported, the glue particles that are subsequently aged and cracked can still be retained in the original place and will not run into the gap between the stator and the rotor, thereby preventing the damage to the coil caused by the aging and falling glue particles, and greatly extending the service life of the pump motor; and since there is the support sleeve, it is very convenient and quick to arrange multiple split core units in the annular core frame in sequence, which can significantly improve the labor productivity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural cross-sectional schematic diagram of the utility model;

[0011] Figure 2 It is a main schematic diagram of the stator in the utility model;

[0012] Figure 3 It is a three-dimensional schematic diagram of the stator in the utility model;

[0013] Figure 4 It is a three-dimensional schematic diagram of the support sleeve in the utility model.

[0014] In the figure: 1. rotor shaft; 2. stator; 3. stator support sleeve; 4. connecting fixing plate; 5. rotor; 6. water outlet section; 7. core frame; 8. core unit; 9. flange. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described in detail below through preferred embodiments and in conjunction with the accompanying drawings of the specification:

[0016] Example: Figures 1 to 4 As shown, a pump motor with a stator support sleeve comprises a rotor shaft 1, a rotor 5 fixedly connected to the rotor shaft 1, and a stator 2 gap-sleeved on the outer peripheral side of the rotor 5, wherein the rotor shaft 1 is provided with a connecting fixing plate 4 on the outer side of one end of the stator 2, and the rotor shaft 1 is provided with a water outlet node 6 on the outer side of the other end of the stator 2, and the inner peripheral surface of the stator 2 is provided with a stator support sleeve 3, and the stator support sleeve 3 is gap-matched with the rotor 5, and the stator support sleeve 3 extends to one side of the connecting fixing plate 4 and is flanged outward at the position of the connecting fixing plate 4, and a sealing ring is provided between the flange and the connecting fixing plate 4, and the stator support sleeve 3 extends to one side of the water outlet node 6 and is sleeved on the outer peripheral side of the connecting portion of the water outlet node 6.

[0017] The stator 2 comprises an iron core frame 7 and a plurality of iron core units 8 with coils (the coil part is not shown in the figure), and the plurality of iron core units 8 with coils are evenly distributed on the inner surface of the annular iron core frame 7. The stator support sleeve 3 is tightly fitted on the annular inner surface formed by the plurality of iron core units 8 with coils, and then glue is poured into the gap between the iron core frame 7 and the stator support sleeve 3 to fix them, thereby forming the stator 2 of the technical solution of this patent. The wall thickness of the stator support sleeve 3 is 0.5 mm to 2 mm, preferably 1 mm.

[0018] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

[0019] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A pump motor with a stator support sleeve, comprising a rotor shaft, a rotor fixedly connected to the rotor shaft, and a stator sleeved on the outer peripheral side of the rotor, characterized in that: The inner circumferential surface of the stator is provided with a stator support sleeve, and the stator support sleeve is gap-matched with the rotor.

2. The pump motor with a stator support sleeve according to claim 1, characterized in that: The rotor shaft is provided with a connecting and fixing plate on the outer side of one end of the stator, and the stator support sleeve extends toward one side of the connecting and fixing plate and is turned outward at the position of the connecting and fixing plate.

3. The pump motor with a stator support sleeve according to claim 2, characterized in that: A sealing ring is provided between the flange and the connecting and fixing plate.

4. The pump motor with a stator support sleeve according to claim 1, 2 or 3, characterized in that: The rotor shaft is provided with a water outlet node on the outer side of the other end of the stator, and the stator support sleeve extends toward one side of the water outlet node and is sleeved with the connecting portion of the water outlet node.

5. The pump motor with a stator support sleeve according to claim 4, characterized in that: The stator support sleeve is sleeved on the outer peripheral side of the connection portion of the water outlet node.

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