CN205123475U - Circulating pump motor - Google Patents

Abstract

The utility model discloses a circulating pump motor, which comprises a rotor component, which specifically includes a rotor bracket, a rotating shaft fixed in the rotor bracket, and a gasket located in the concave cavity at the end of the rotor bracket; As for the elastic part of the gasket, the gasket is relatively fixed in the circumferential direction and the axial direction of the rotor part through the elastic part. The circulating pump motor uses the elastic deformation of the elastic parts to realize the relative fixation of the gasket and the rotor part in the circumferential and axial directions; in this way, the gasket and the rotor part can be fixed in the circumferential and axial directions, avoiding the Or vibration and noise caused by axial movement. At the same time, no matter which direction the motor is working in, the axial position of the gasket will not change, which can avoid permanent contact friction between the gasket and the bearing at the end of the shaft, thus extending the motor. service life.

Description

Circulation pump motor

technical field

The utility model relates to the technical field of motors, in particular to a circulation pump motor.

Background technique

Circulation pumps are usually used in various occasions that require circulation in daily life, such as domestic hot water circulation, boiler circulation, etc.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a conventional circulating pump.

The circulation pump mostly uses the motor 10 as a power source, and the motor 10 drives the impeller 20 of the water pump to rotate to circulate the liquid in the pump body 30 . Wherein, the motor 10 includes a stator part 11 and a rotor part 12 .

Please refer to FIG. 2 . FIG. 2 is a schematic cross-sectional view of a rotor component of a conventional circulating pump motor.

The rotor bracket 121 and the rotating shaft 122 of the rotor component 12 are integrated. When the motor 10 is running, the rotor bracket 121 drives the rotating shaft 122 to rotate at a high speed.

In order to avoid direct contact and friction between the rotating rotor bracket 121 and the stationary bearing 123 , a wear-resistant gasket 124 is provided between the rotor bracket 121 and the bearing 123 , so that the gasket rotates with the rotor bracket 121 .

Wherein, the bearing 123 is directly assembled on the end cover, and the rotating shaft 122 is inserted into the rotor bracket 121. The rotor bracket 121 is provided with a mounting portion 1211, and the gasket 124 is covered with the mounting portion 1211, as shown in FIG. 2 , the mounting portion 1211 It is located between the spacer 124 and the rotating shaft 122 .

In order to ensure that the washer 124 can rotate together with the rotor bracket 121 , the mounting portion 1211 has a limiting structure in the circumferential direction, so that the washer 124 is relatively fixed to the circumferential direction of the rotor bracket 121 .

Please understand with reference to FIG. 3 . FIG. 3 is a cross-sectional view of the rotor component in FIG. 2 along the line A-A.

The mounting portion 1211 has a planar structure 1211a in the circumferential direction, and the inner hole of the washer 124 fits with it, so that the washer 124 is relatively fixed to the circumferential direction of the rotor bracket 121 , and the washer 124 can rotate together with the rotor bracket 121 . Obviously, the planar structure 1211a is the aforementioned limiting structure.

However, the motor has the following problems in actual operation:

Since the aforementioned planar structure 1211a can only ensure that the gasket 124 and the rotor bracket 121 are relatively fixed in the circumferential direction, the axial position of the gasket 124 cannot be located, and the motor 10 has an axial gap, and the gasket 124 will produce a certain axial gap relative to the rotating shaft 122. This will increase the vibration and noise of the motor 10 during operation; the assembly gap between the gasket 124 and the rotor bracket 121 will also cause the gasket 124 to move slightly in the circumferential direction, which will also increase the vibration of the motor 10 during operation. and noise;

In addition, since the gasket 124 has no axial positioning, when the motor 10 is working in a vertical state (orientation as shown in Figure 2 ), affected by gravity, the gasket 124 below will always be close to the bearing 123 below, which can be combined with As can be seen from FIG. 4 , it is a partially enlarged view of part B in FIG. 2 , so that the lower gasket 124 is always in contact with the lower bearing 123 and generates friction, thereby reducing the service life of the motor 10 .

In view of this, how to optimize the structure of the existing circulating pump motor so that the gasket can be fixed in both the circumferential and axial directions relative to the rotor component, and avoid vibration and noise caused by the circumferential or axial movement of the gasket, It is a technical problem that those skilled in the art need to solve at present.

Utility model content

The purpose of this utility model is to provide a circulating pump motor. The structural design of the motor enables the gasket to be fixed in both the circumferential and axial directions relative to the rotor component, avoiding the vibration and vibration caused by the circumferential or axial movement of the gasket. Noise; at the same time, since the circumferential and axial directions of the gasket and the rotor parts are relatively fixed, no matter which direction the motor is working in, permanent contact friction between the gasket and the bearing can be avoided, thereby prolonging the service life of the motor.

In order to solve the above technical problems, the utility model provides a circulating pump motor, including a rotor component, which specifically includes a rotor bracket, a rotating shaft fixed in the rotor bracket, and a gasket located in the cavity at the end of the rotor bracket ; It also includes an elastic component sheathed on the gasket, and the gasket is relatively fixed in the circumferential direction and the axial direction of the rotor component through the elastic component.

The utility model realizes the circumferential and axial relative fixation of the gasket and the rotor part through structural improvement. Specifically, in this solution, elastic parts are sleeved on the gaskets. During assembly, the gaskets with elastic parts are directly installed in the concave cavity at the end of the rotor bracket, and the elastic deformation of the elastic parts is used to realize the alignment between the gaskets and the rotor. Components are relatively fixed in the circumferential and axial directions; in this way, the gasket and the rotor components can be fixed in the circumferential and axial directions, avoiding the vibration and noise caused by the circumferential or axial movement of the gasket, and at the same time, regardless of the motor In which direction it works, the axial position of the gasket will not change, which can avoid permanent contact friction between the gasket and the bearing at the end of the rotating shaft, thereby prolonging the service life of the motor; in addition, in actual work, due to the elastic The deformation function can also play a buffering role, and the position of the gasket can also be adjusted appropriately to make the contact area with the bearing relatively largest, so as to reduce the amount of friction.

In addition, since the gasket is positioned by the planar structure of the mounting part in the prior art, it is necessary to align the planar part of the inner hole of the gasket with the planar structure of the mounting part when assembling the gasket. However, in practice, due to the It has a certain depth, which brings difficulty to the assembly of the gasket, but the circulation pump motor provided by the utility model only needs to insert the gasket covered with the elastic component into the concave hole at the end of the rotor bracket by the elastic extrusion of the elastic component. It can be installed in the cavity, which significantly reduces the difficulty of assembly.

An accommodating structure for installing the elastic component is provided on the outer peripheral wall of the gasket, and the gasket is fixed to the rotor bracket through the elastic component.

An accommodating structure for installing the elastic component is provided on the inner peripheral wall of the gasket, and the gasket is fixed to the rotating shaft through the elastic component.

The containing structure is an annular groove.

The accommodating structure is a stepped structure.

The cross section of the elastic component is a stepped shape matched with the stepped structure.

The section of the elastic member is circular, square or rectangular.

The elastic component is an O-ring.

Description of drawings

Fig. 1 is the structural representation of existing common circulation pump;

Fig. 2 is a schematic cross-sectional view of a rotor component of an existing common circulating pump motor;

Fig. 3 is an A-A sectional view of the rotor part in Fig. 2;

Fig. 4 is a partially enlarged view of part B in Fig. 2;

Fig. 5 is a structural schematic diagram of the first embodiment of the circulation pump motor provided by the utility model;

Fig. 6 is a partially enlarged view of part C in Fig. 5;

Fig. 7 is a structural schematic diagram of the second embodiment of the circulation pump motor provided by the utility model;

Figures 8-12 show the structural schematic diagrams of five specific embodiments in which the gasket cooperates with the elastic component.

Among them, the one-to-one correspondence between reference numerals and component names in Figures 1 to 4 is as follows:

Motor 10, stator part 11, rotor part 12;

Rotor bracket 121, mounting part 1211, planar structure 1211a, rotating shaft 122, bearing 123, gasket 124;

impeller 20, pump body 30;

Wherein, the one-to-one correspondence between reference numerals and component names in Fig. 5 to Fig. 12 is as follows:

The rotor bracket 401 , the concave cavity 401 a , the rotating shaft 402 , the bearing 403 , the spacer 404 , the containing structure 404 a, and the elastic component 405 .

detailed description

The core of the utility model is to provide a circulating pump motor. The structural design of the motor enables the gasket to be fixed in both the circumferential and axial directions relative to the rotor component, avoiding the vibration and vibration caused by the circumferential or axial movement of the gasket. Noise; at the same time, since the circumferential and axial directions of the gasket and the rotor parts are relatively fixed, no matter which direction the motor is working in, permanent contact friction between the gasket and the bearing can be avoided, thereby prolonging the service life of the motor.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 5 and Fig. 6. Fig. 5 is a schematic structural diagram of the first embodiment of the circulation pump motor provided by the present invention; Fig. 6 is a partially enlarged view of part C in Fig. 5 .

In this embodiment, the rotor part of the circulating pump motor includes a rotor bracket 401 and a rotating shaft 402 fixed in the rotor bracket 401 . Specifically, the rotating shaft 402 is inserted into the rotor bracket 401 , of course, the rotating shaft 402 may also be injected into the rotor bracket 401 .

Both ends of the rotating shaft 402 are sleeved with bearings 403, and the bearings 403 are connected with the end caps.

When working, the stator part of the motor drives the rotor part to run at a high speed. In order to reduce the wear between the bearing 403 and the rotor bracket 401 during operation, a gasket 404 is arranged between the bearing 403 and the rotor bracket 401 .

Usually, the end of the rotor bracket 401 is provided with a cavity 401 a for receiving the spacer 404 .

In this embodiment, the outer peripheral wall of the gasket 404 is also sleeved with an elastic member 405. When assembling, the elastic member 405 and the gasket 404 are fixed and matched first, and then the gasket 404 is put into the concave cavity 401a, and the elastic member 405 Squeezed between the outer peripheral wall of the gasket 404 and the inner peripheral wall of the cavity 401a, the gasket 404 is fixed by the elastic deformation of the elastic member 405, so that the gasket 404 and the rotor bracket 401 are relatively fixed in both the circumferential direction and the axial direction.

As above, since the gasket 404 and the rotor part can be fixed in the circumferential direction and the axial direction, the vibration and noise caused by the circumferential or axial movement of the gasket 404 are avoided. At the same time, no matter in which direction the motor is working, the gasket The axial position of the sheet 404 will not change, which can avoid permanent contact friction between the gasket 404 and the bearing 403, thereby prolonging the service life of the motor; in addition, in actual work, the elastic member 405 is set except for the fixed gasket 404, due to Its own elastic deformation function can also play a buffering role, and the position of the washer 404 can also be properly adjusted to make the contact area with the bearing 403 relatively largest, so as to reduce the amount of friction.

In addition, since the gasket is positioned by the planar structure of the mounting part in the prior art, it is necessary to align the planar part of the inner hole of the gasket with the planar structure of the mounting part when assembling the gasket. However, in practice, due to the It has a certain depth, which brings difficulty to the assembly of the gasket, but the motor provided by this embodiment only needs to place the gasket covered with the elastic component into the cavity at the end of the rotor bracket by elastic extrusion of the elastic component That is, the difficulty of assembly is obviously reduced.

Please refer to FIG. 7 , which is a schematic structural diagram of the second embodiment of the circulating pump motor provided by the present invention.

The design principle of this embodiment is the same as that of the aforementioned first embodiment, the difference is that in this embodiment, the elastic member 405 is sleeved on the inner peripheral wall of the gasket 404, and the elastic member 405 and the gasket 404 are first fixedly fitted together during assembly. , and then put the gasket 404 into the concave cavity 401a. At this time, the elastic member 405 is squeezed between the inner peripheral wall of the gasket 404 and the outer peripheral wall of the rotating shaft 402, and the elastic deformation of the elastic member 405 is used to fix the gasket 404. , so that the gasket 404 is relatively fixed relative to the rotating shaft 402 in both the circumferential direction and the axial direction.

Such a design can also achieve the same technical effect as that of the aforementioned first embodiment, which will not be repeated here.

The cooperation form of the gasket 404 and the elastic member 405 will be described in detail below.

Please understand with reference to FIGS. 8-10 , which show three different structures when the elastic member 405 is sleeved on the gasket 404 .

As shown in FIG. 8 , an accommodating structure 404 a is provided on the outer peripheral wall of the gasket 404 , and the accommodating structure 404 a is a stepped structure, and the elastic member 405 is overlaid on the stepped structure and attached to the stepped surface of the stepped structure.

The receiving structure 404a of the gasket 404 can also be configured as an annular groove structure as shown in FIG. 9 , and the elastic member 405 is locked in the annular groove structure.

When the receiving structure 404a of the spacer 404 is a stepped structure as shown in FIG. 8 , the cross section of the elastic member 405 can be set as a stepped shape that cooperates with the stepped structure, as shown in FIG. 10 .

In actual arrangement, the cross section of the elastic member 405 may be circular, as shown in FIG. 8 , or rectangular, as shown in FIG. 9 , of course, may also be square or oval.

It can be understood that when the elastic component 405 is disposed on the inner peripheral wall of the gasket 404 , the cooperation between the gasket 404 and the elastic component 405 is similar to the above. For details, please refer to Fig. 11 and Fig. 12 for understanding.

In FIG. 11 , the accommodating structure 404 a provided on the inner peripheral wall of the gasket 404 is a stepped structure. In FIG. 12 , the accommodating structure 404 a provided on the inner peripheral wall of the gasket 404 is an annular groove structure.

Of course, the cross-sectional shape of the elastic member 405 can also be various, such as circular, square, rectangular or elliptical.

In a specific solution, the elastic member 405 can be an O-ring, and of course other elastic members can also be selected.

The circulation pump motor provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (8)

1. circulating pump motor, comprise rotor part, it specifically comprises rotor field spider (401), the rotating shaft (402) of being fixed in described rotor field spider (401), and is positioned at the pad (404) of described rotor field spider (401) end cavity (401a); It is characterized in that, also comprise the elastomeric element (405) being sheathed on described pad (404), described pad (404) is by the circumference of described elastomeric element (405) and described rotor part and axially relative fixing.

2. circulating pump motor according to claim 1, it is characterized in that, the periphery wall of described pad (404) offers the contained structure (404a) installing described elastomeric element (405), and described pad (404) is fixed on described rotor field spider (401) by described elastomeric element (405).

3. circulating pump motor according to claim 1, it is characterized in that, the internal perisporium of described pad (404) offers the contained structure (404a) installing described elastomeric element (405), and described pad (404) is fixed on described rotating shaft (402) by described elastomeric element (405).

4. circulating pump motor according to claim 1 and 2, is characterized in that, described contained structure (404a) is cannelure.

5. circulating pump motor according to claim 1 and 2, is characterized in that, described contained structure (404a) is ledge structure.

6. circulating pump motor according to claim 5, is characterized in that, the section of described elastomeric element (405) is the stairstepping coordinated with described ledge structure.

7. the circulating pump motor according to any one of claim 1-3, is characterized in that, the circular cross-section of described elastomeric element (405) or square or rectangle.

8. the circulating pump motor according to any one of claim 1-3, is characterized in that, described elastomeric element (405) is O type circle.