Encapsulation motor structure for pump

Abstract

The utility model discloses a potting motor structure for a pump, which comprises a mounting bracket, a stator iron core and a stator winding, the stator winding is arranged on the stator iron core to form a stator assembly, the mounting bracket is provided with an accommodating cavity, and the stator assembly is encapsulated in the accommodating cavity by pouring sealant. According to the motor structure of the scheme, the stator assembly is sealed in the accommodating cavity of the mounting bracket by the pouring sealant, so that the sealing performance of the motor stator assembly is greatly improved, liquid is prevented from permeating into the stator assembly, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid supply pumps, in particular to a pump potting motor structure. Background Art

[0002] A liquid supply pump is a device that transports liquid or pressurizes liquid. It usually transfers mechanical energy or other energy to the liquid, increasing the liquid energy and the liquid pressure. Specifically, the liquid supply pump drives the impeller to rotate through a motor. The rotating impeller provides mechanical energy to the liquid entering the inner cavity of the liquid supply pump, so that the liquid is quickly discharged from the liquid outlet.

[0003] The liquid supply pump needs to be in contact with liquid for a long time during operation, and there is a risk that the liquid will penetrate into the motor. Once the motor is infiltrated with liquid for a long time, its working performance and service life will be affected. Therefore, those skilled in the art continue to seek solutions to improve the sealing performance of the motor. Utility Model Content

[0004] In order to overcome the defects in the prior art, an embodiment of the utility model provides a pump potting motor structure, which is used to solve the above-mentioned problems.

[0005] The embodiment of the present application discloses: a potted motor structure for a pump, comprising a mounting bracket, a stator core and a stator winding, wherein the stator winding is arranged on the stator core to form a stator assembly, the mounting bracket has a accommodating cavity, and the stator assembly is potted in the accommodating cavity by potting glue.

[0006] Specifically, the mounting bracket includes a bottom plate and a ring-shaped side plate, the side plate is connected to the bottom plate and the two surround the accommodating cavity.

[0007] Specifically, two metal needles penetrating the bottom plate are provided on the bottom plate, one end of the metal needle is connected to the terminal of the stator winding, and the other end of the metal needle penetrates the bottom plate to be connected to the circuit board.

[0008] Specifically, the pump potting motor structure further includes a mover assembly connected to the base plate, and the mover assembly is arranged at the center of the stator assembly.

[0009] Specifically, the movable subassembly includes a shaft core, a bearing, an impeller and a magnet. The shaft core is fixedly connected to the base plate, the bearing is connected to one end of the shaft core away from the base plate, the impeller is sleeved on the bearing, and the magnet is sleeved on the impeller to cooperate with the stator winding.

[0010] Specifically, a boss wound around the metal needle is provided on the bottom plate, and a connecting portion for the metal needle to penetrate is provided on the stator yoke of the stator core, and the bottom of the connecting portion abuts against the boss.

[0011] The utility model has at least the following beneficial effects: the pump potting motor structure of the embodiment has a stator assembly arranged in the accommodating cavity of the mounting bracket and sealed in the accommodating cavity by potting glue, which greatly improves the sealing performance of the motor stator assembly, prevents liquid from penetrating into the stator assembly, and prolongs the service life of the motor. At the same time, the mounting bracket is used as a base to pot the stator assembly, which can greatly improve the stability of the potting. In addition, the motor structure of the embodiment is simple and easy to assemble.

[0012] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the pump potting motor structure in the embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the sealing of the stator assembly by the potting glue in the embodiment of the utility model;

[0016] Figure 3 It is a cross-sectional view of the structure of the pump potting motor in the embodiment of the utility model;

[0017] Figure 4 It is a schematic diagram of the installation of the pump potting motor structure in the embodiment of the utility model.

[0018] The figure markings of the above drawings are: 1. mounting bracket; 11. bottom plate; 12. side plate; 2. stator core; 21. stator yoke; 22. stator teeth; 3. potting glue; 4. metal needle; 5. circuit board; 61. shaft core; 62. bearing; 63. impeller; 64. magnet; 7. housing. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "fixed", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0021] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "below" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0023] In addition, the terms "first", "second", etc. are only used to distinguish in description and have no special meaning.

[0024] Combination Figure 1 and Figure 2As shown, the pump potting motor structure of this embodiment mainly includes: a mounting bracket 1, a stator core 2 and a stator winding (not shown). Among them, the stator core 2 includes an annular stator yoke 21 and stator teeth 22 arranged on the inner side of the stator yoke 21, and the stator winding is arranged on the stator teeth 22. The stator winding and the stator core 2 are connected to form a stator assembly. The mounting bracket 1 has a receiving cavity, and the stator assembly is arranged in the receiving cavity. After the stator assembly is assembled in the receiving cavity of the mounting bracket 1, the stator assembly is sealed and connected to the receiving cavity by filling the potting glue 3 into the receiving cavity.

[0025] Specifically, Figure 1 As shown, the mounting bracket 1 of this embodiment includes a bottom plate 11 and a ring-shaped side plate 12, the side plate 12 is connected to the bottom plate 11, and the two surround the above-mentioned accommodation cavity. Preferably, the bottom plate 11 and the side plate 12 are an integrally formed structure.

[0026] Furthermore, if Figure 3 As shown, two metal needles 4 are also provided on the bottom plate 11 of this embodiment. The two metal needles 4 are arranged on the bottom plate 11 at intervals and respectively penetrate the bottom plate 11. One end of the metal needle 4 is connected to the terminal of the stator winding, and the other end penetrates the bottom plate 11 to be connected to the circuit board 5. Specifically, the stator winding has two terminals, and one terminal is connected to one metal needle 4.

[0027] Continue to refer to Figure 3 As shown, the motor structure of this embodiment also includes a mover assembly connected to the base plate 11, and the mover assembly is arranged at the center of the stator assembly. That is to say, when the stator assembly is sealed with the potting glue 3, the potting glue 3 is generally annular, and the center thereof is vacant for installing the mover assembly. Specifically, the mover assembly includes a shaft core 61, a bearing 62, an impeller 63 and a magnet 64. The shaft core 61 is fixed to the base plate 11 of the mounting bracket 1, and the bearing 62 is connected to the end of the shaft core 61 away from the base plate 11. The impeller 63 is fixedly sleeved on the outer wall of the bearing 62, and at the same time, the magnet 64 is sleeved on the impeller 63, and the position height of the magnet 64 along the axial direction is substantially the same as the position height of the iron core, so that the magnet 64 can cooperate well with the stator winding.

[0028] like Figure 4 As shown, the bottom plate 11 of this embodiment is provided with a boss arranged around the metal needle 4. The stator yoke 21 of the stator core 2 is provided with a connecting portion for the metal needle 4 to penetrate. When the stator assembly is assembled, the bottom of the connecting portion abuts against the boss on the bottom plate 11.

[0029] like Figure 3As shown, the assembly method of the potted motor structure for a pump of the present embodiment is as follows: first, the stator assembly is installed in the accommodating cavity of the mounting bracket 1, the two terminal ends of the stator winding are respectively welded to the two metal needles 4, and then the potting glue 3 is filled into the accommodating cavity, and the liquid potting glue 3 can completely wrap the stator assembly after solidification; then, the circuit board 5 is installed on the bottom plate 11 of the mounting bracket 1, and the circuit board 5 and the stator assembly are respectively located on both sides of the bottom plate 11; then, the mover assembly is installed on the bottom plate 11 of the mounting bracket 1; finally, the mounting bracket 1 assembled with the stator assembly, the circuit board 5 and the mover assembly is inserted into the inner cavity of the pump housing 7 for fixing.

[0030] In summary, the pump potting motor structure of this embodiment has a stator assembly disposed in the accommodating cavity of the mounting bracket 1 and sealed in the accommodating cavity by the potting glue 3, which greatly improves the sealing of the motor stator assembly and prevents liquid from penetrating into the stator assembly. At the same time, the mounting bracket 1 is used as a base to pot the stator assembly, which can greatly improve the stability of the potting. In addition, the motor structure of this embodiment is simple and easy to assemble.

[0031] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A potted motor structure for a pump, characterized in that: It comprises a mounting bracket, a stator core and a stator winding, wherein the stator winding is arranged on the stator core to form a stator assembly, the mounting bracket has a receiving cavity, and the stator assembly is potted in the receiving cavity by potting glue.

2. The pump potting motor structure according to claim 1, characterized in that: The mounting bracket comprises a bottom plate and a ring-shaped side plate, wherein the side plate is connected to the bottom plate and the two sides surround the accommodating cavity.

3. The pump potting motor structure according to claim 2, characterized in that: The bottom plate is provided with two metal needles penetrating the bottom plate, one end of the metal needle is connected to the terminal of the stator winding, and the other end of the metal needle penetrates the bottom plate to be connected to the circuit board.

4. The pump potted motor structure according to claim 2, characterized in that: The pump potting motor structure further includes a mover assembly connected to the base plate, and the mover assembly is arranged at the center of the stator assembly.

5. The pump potted motor structure according to claim 4, characterized in that: The mover assembly includes a shaft core, a bearing, an impeller and a magnet. The shaft core is fixedly connected to the base plate, the bearing is connected to one end of the shaft core away from the base plate, the impeller is sleeved on the bearing, and the magnet is sleeved on the impeller to cooperate with the stator winding.

6. The potted motor structure for a pump according to claim 3, characterized in that: The bottom plate is provided with a boss wound around the metal needle, and the stator yoke of the stator core is provided with a connecting portion for the metal needle to penetrate, and the bottom of the connecting portion is in contact with the boss.

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