Water pump motor and water pump

Abstract

The utility model belongs to the technical field of water pumps, and discloses a water pump motor and an axial flow water pump, the water pump motor comprises a water pipe joint, a motor casing, a rotor, a stator core, a magnet exciting coil and a diversion pipeline, the water pipe joint is connected with one axial end of the motor casing; the rotor sleeve is axially arranged in the motor shell, one end, close to the water pipe connector, of the rotor sleeve is closed, the other end is connected with the motor shell, and an inner cavity of the motor shell is divided into a rotor cavity and a stator cavity by the rotor sleeve; one end, far away from the water pipe connector, of the rotating shaft extends out of the rotor cavity; the stator core and the excitation coil are located in the stator cavity, and the excitation coil can generate a magnetic field for rotation of the rotor on the stator core after being electrified; the flow guide pipeline is arranged in the stator cavity in the axial direction and communicated with the outside, and water flows into the water pipe connector from the outside through the flow guide pipeline. According to the water pump motor, the flow guide pipeline serving as a drainage pipe is arranged in the motor shell, space is saved, and hiding is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a water pump motor and a water pump. Background Art

[0002] With the development of human civilization and technology, people's requirements for natural landscapes and living environments are constantly increasing. More and more people are beautifying their living environment through artificial landscapes. For example, many nature lovers set up landscape aquariums at home to bring nature home.

[0003] The water pump provides the core power for the aquarium landscape. However, the traditional water pump includes a water pump motor, an impeller, an impeller housing and a drain pipe. The drain pipe is connected to the impeller housing to guide the water sucked into the impeller housing when the impeller rotates to other functional systems such as the filtration system. The drain pipe occupies a large space in the aquarium, has poor concealment, and has a great impact on the living environment of the organisms in the aquarium. Utility Model Content

[0004] One of the purposes of the utility model is to provide a water pump motor with compact structure and high space utilization.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Water pump motor, including:

[0007] Motor housing;

[0008] A water pipe joint connected to one axial end of the motor housing;

[0009] A rotor sleeve is axially arranged in the motor housing, one end of the rotor sleeve close to the water pipe joint is closed, and the other end is connected to the motor housing, and the rotor sleeve divides the inner cavity of the motor housing into a rotor cavity and a stator cavity;

[0010] A rotor is rotatably sleeved on a rotating shaft arranged in the rotor cavity, and one end of the rotating shaft away from the water pipe joint extends out of the rotor cavity;

[0011] A stator core and an excitation coil are located in the stator cavity. The excitation coil is wound around the stator core. When the excitation coil is energized, a magnetic field for the rotor to rotate can be generated on the stator core.

[0012] A flow guide pipe is axially arranged in the stator cavity, the flow guide pipe is communicated with the outside, and water flows from the outside into the water pipe joint through the flow guide pipe.

[0013] Preferably, a plurality of the guide pipes are symmetrically arranged on the outer circumference of the rotor sleeve.

[0014] Preferably, the motor housing includes a main shell and an upper cover which are separately arranged, the main shell and the upper cover enclose the inner cavity, the stator core and the excitation coil are located in the main shell, the main shell is filled with potting glue, the water pipe joint is connected to the upper cover, and the diversion pipe is connected to the main shell and inserted into the upper cover.

[0015] Another object of the utility model is to provide an axial flow water pump, comprising an impeller, a bottom cover and any of the above-mentioned water pump motors, the bottom cover being connected to an end of the motor housing away from the water pipe joint to form an impeller cavity, the impeller being located in the impeller cavity and connected to the rotor, the guide pipe being connected to the impeller cavity, and a connecting port connecting to the outside world being provided on the impeller cavity.

[0016] Preferably, a positioning sleeve is further provided on the bottom cover, and the rotating shaft is inserted into the positioning sleeve and circumferentially limited by the positioning sleeve.

[0017] Preferably, the communication port is coaxial with the impeller, and the positioning sleeve is located in the communication port.

[0018] Preferably, it further comprises a water inlet cover connected to the motor housing, wherein the bottom cover is disposed therein, and a plurality of strip-shaped slots communicating with the outside are circumferentially arranged on the water inlet cover.

[0019] Preferably, the water inlet cover and the motor housing are snap-connected.

[0020] Preferably, the inner wall surface of the water inlet cover is protrudingly provided with a clamping groove extending in the circumferential direction, and one end of the clamping groove is a water inlet. The outer wall surface of the motor housing is provided with a first clamping block, and the first clamping block can be rotatably inserted into the clamping groove. The motor housing is provided with deformation seams extending in the axial direction on both sides of at least one of the first clamping blocks, and the first clamping block abuts against the inner wall surface of the water inlet cover.

[0021] Preferably, a connecting piece is further included, and the connecting piece is arranged at the bottom of the water inlet cover.

[0022] Beneficial effects of the utility model: the water pump motor and axial flow water pump in the utility model are provided with a guide pipe for water flow inside the motor housing of the water pump motor. The guide pipe acts as a drain pipe and can introduce water flow into other equipment along the axial direction of the impeller, thereby reducing the occupied area of ​​the entire axial flow water pump, and has a compact structure and is easy to hide. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a water pump motor in an embodiment of the utility model;

[0024] Figure 2It is a bottom view of the water pump motor in the embodiment of the utility model;

[0025] Figure 3 is along Figure 2 Sectional view along AA direction;

[0026] Figure 4 is along Figure 1 Cross-sectional view along the BB direction;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of one angle of the main housing in the embodiment of the utility model;

[0028] Figure 6 It is a front view of an axial flow water pump in an embodiment of the utility model;

[0029] Figure 7 This is a schematic structural diagram of the main housing at another angle in an embodiment of the utility model;

[0030] Figure 8 is along Figure 6 Sectional view along CC direction;

[0031] Fig. 9 yes Figure 7 Schematic diagram of the enlarged structure at D in the middle;

[0032] Fig.10 It is a schematic diagram of the structure of the bottom cover in the embodiment of the utility model;

[0033] Fig.11 It is a structural schematic diagram of the water inlet cover in the embodiment of the utility model.

[0034] In the figure: 10, water pump motor; 11, motor housing; 111, main housing; 1111, main body; 1112, plug-in portion; 1113, first clamping block; 111a, deformation joint; 112, upper cover; 113, rotor sleeve; 114, flow guide pipe; 11a, rotor cavity; 11b, stator cavity; 12, rotor; 13, stator core; 14, excitation coil; 15, water pipe joint; 16, rotating shaft;

[0035] 20, bottom cover; 21, positioning sleeve; 22, connecting rod; 20a, connecting port; 20b, force application groove;

[0036] 30. Impeller;

[0037] 40. water inlet cover; 40a. slit; 41. second clamping block; 42. limit block;

[0038] 50. Connectors. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is 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 that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] refer to Figure 1-Figure 5As shown, in the embodiment of the utility model, a water pump motor is provided for providing power to an impeller 30 in a water pump. The water pump motor 10 comprises a motor housing 11, a water pipe joint 15, a rotor 12, a stator core 13 and an excitation coil 14, wherein the water pipe joint 15 is arranged at one axial end of the motor housing 11, and is used to connect the water pump motor 10 and other systems such as a filtration system, and the water pipe joint 15 can adopt the structure of any type of water pipe joint in the prior art, such as a quick joint and a common joint. A rotor sleeve 113 and a guide pipe 114 are axially arranged in the motor housing 11. One end of the rotor sleeve 113 close to the water pipe joint 15 is closed, and the other end is connected to the end face of the motor housing 11. The rotor sleeve 113 divides the inner cavity of the motor housing 11 into a rotor cavity 11a and a stator cavity 11b. The rotor 12 is rotatably sleeved on a rotating shaft 16 arranged in the rotor cavity 11a. One end of the rotating shaft 16 away from the water pipe joint 15 extends axially out of the rotor cavity 11a. The stator core 13 and the excitation coil 14 are both located in the stator cavity 11b. The excitation coil 14 is wound on the stator core 13. When the excitation coil 14 is energized, a magnetic field that causes the rotor 12 to rotate is generated on the stator core 13. The motor housing 11 is also provided with a wire hole for the cable connected to the excitation coil 14 to pass through the motor housing 11 . The guide pipe 114 is located in the stator cavity 11 b , and its end away from the water pipe joint 15 can be connected to the outside world, and the external water flow can flow into the water pipe joint 15 through the guide pipe 114 .

[0044] In the above-mentioned water pump motor 10, a guide pipe 114 is arranged in the motor housing 11. The guide pipe 114 is used as a drain pipe. Water can flow from one axial end of the motor housing 11 through the guide pipe 114 into the water pipe joint 15 arranged at the other end of the motor housing 11. The guide pipe 114 is integrated in the motor housing 11, does not occupy additional space, and has strong concealment. The rotor 12 is arranged in the rotor cavity 11a, and the stator core 13 and the excitation coil 14 are arranged in the stator cavity 11b, which reduces the possibility of water contacting the stator core 13 and the excitation coil 14 due to the rotation of the rotor 12, and improves the waterproof level. Moreover, when the water flows in the guide pipe 114, it can take away the heat generated by the excitation coil 14 in the motor housing 11, thereby achieving effective heat dissipation.

[0045] refer to Figure 2 , Figure 4 and Figure 5 As shown, there are multiple guide pipes 114, which are symmetrically arranged on the outer periphery of the rotor sleeve 113. For example, two guide pipes 114 are arranged, and the two guide pipes 114 are symmetrically arranged on opposite sides of the rotor sleeve 113. When water flows out through the guide pipes 114, the stability of the water pump motor 10 can be maintained.

[0046] In order to reduce the difficulty of processing, the motor housing 11 includes a main housing 111 and an upper cover 112 which are separately arranged. One end of the main housing 111 is closed and the other end is open, wherein the open end is connected to the upper cover 112 by means including but not limited to plugging, the upper cover 112 and the main housing 111 are together enclosed to form the inner cavity of the motor housing 11, the stator core 13 and the excitation coil 14 are both located in the main housing 111, and the water pipe joint 15 is connected to the upper cover 112 by means including but not limited to threaded connection. It is worth noting that the upper cover 112 and the main housing 111 and the water pipe joint 15 and the upper cover 112 must be sealed. As for the specific sealing method, the sealing can be achieved by using a commonly used sealing structure such as a sealing ring, which will not be described in detail here.

[0047] Based on the separate main housing 111 and upper cover 112, there must be a separate setting of the diversion pipe 114 and the water pipe joint 15 and / or the main housing 111. When connecting the diversion pipe 114 and the water pipe joint 15 or connecting the diversion pipe 114 and the main housing 111, there is a possibility of water leakage, which easily causes the water flowing through the diversion pipe 114 to contact the stator core 13 and the excitation coil 14, thereby affecting the performance of the water pump motor 10. In order to avoid the above situation, in this embodiment, a potting glue is poured into the main housing 111, and the height of the potting glue is higher than the height of the excitation coil 14 and the stator core 13. After the potting glue solidifies, the excitation coil 14 and the stator core 13 are sealed inside. Even if there is a gap at the position where the diversion pipe 114 is connected to the water pipe joint 15 or the main housing 111, the water flow will not contact the excitation coil 14 and the stator core 13.

[0048] In this embodiment, in order to reduce the difficulty of assembly, the guide pipe 114 is integrally formed with the main housing 111, and one end thereof close to the water pipe joint 15 is inserted into the upper cover 112. At this time, the guide pipe 114 and the water pipe joint 15 do not need to be connected, and the water flow can flow from the guide pipe 114 into the water pipe joint 15. Due to the setting of the potting glue, the water flow does not contact the excitation coil 14 and the stator core 13. During specific assembly, the potting glue is first poured inward through the open end of the main housing 111, and the height of the potting glue is higher than the height of the stator core 13 and the excitation coil 14. Before the potting glue is solidified, the upper cover 112 is connected to the main housing 111, and the guide pipe 114 integrally formed with the main housing 111 is inserted into the upper cover 112. After the potting glue is solidified, the excitation coil 14 and the stator core 13 are sealed. After the water flows through the guide pipe 114, it first enters the upper cover 112, and then flows out through the water pipe joint 15 connected to the upper cover 112. The potting compound is preferably epoxy resin.

[0049] refer to Figure 6-Figure 11As shown, in another embodiment of the utility model, an axial flow water pump is also proposed, including an impeller 30, a bottom cover 20 and a water pump motor 10. The water pump motor adopts the water pump motor in the above embodiment. The bottom cover 20 is connected to the end of the motor housing 11 away from the water pipe joint 15 and encloses to form an impeller cavity. The impeller 30 is located in the impeller cavity and is sleeved on the rotating shaft 16. The impeller 30 is connected to the rotor 12. Driven by the rotor 12, the impeller 30 can rotate around the rotating shaft 16, so that the external water enters the impeller cavity through the connecting port 20a provided on the bottom cover 20, and the guide pipe 114 is connected to the impeller cavity, thereby realizing communication with the outside world. It should be emphasized that in order to improve the stability of the rotation of the impeller 30, a positioning sleeve 21 is also provided on the bottom cover 20, and the end of the rotating shaft 16 away from the water pipe joint 15 is inserted into the positioning sleeve 21 and is keyed to the positioning sleeve 21, so that the rotating shaft 16 is circumferentially limited to the positioning sleeve 21. Exemplarily, the communication port 20a and the positioning sleeve 21 are both coaxial with the impeller 30 and the positioning sleeve 21 is disposed in the communication port 20a. The positioning sleeve 21 is connected to the inner wall surface of the communication port 20a through a plurality of connecting rods 22 disposed along the circumferential direction.

[0050] The bottom cover 20 is connected to the motor housing 11 by a method including but not limited to a threaded connection. For example, the bottom cover 20 is screwed into the motor housing 11. To facilitate force application, two force application grooves 20b are provided on the outer side of the bottom of the bottom cover 20. The thumb and index finger can be placed in the force application grooves 20b respectively to apply rotational force to the bottom cover 20.

[0051] Optionally, the axial flow water pump also includes a water inlet cover 40 connected to the motor housing 11. The end of the motor housing 11 away from the water pipe joint 15 is integrally provided with an impeller groove protruding along the axial direction. The outer diameter of the impeller groove is smaller than the outer diameter of the motor housing 11. The bottom cover 20 is connected to the impeller groove and encloses an impeller cavity. The water inlet cover 40 arranges the bottom cover 20 and the impeller groove cover therein. A plurality of strip grooves connected to the outside are circumferentially arranged on the water inlet cover 40. While ensuring the water inlet amount, the arrangement of the strip grooves can also prevent large foreign objects from entering the impeller cavity, thereby avoiding affecting the service life of the impeller 30.

[0052] The water inlet cover 40 is connected to the motor housing 11 in a manner including but not limited to snap-fitting. For example, a snap-fitting groove extending in the circumferential direction is protruded on one of the water inlet cover 40 and the motor housing 11, one end of the snap-fitting groove is open and the other end is closed, and a first snap-fitting block 1113 is provided on the other of the water inlet cover 40 and the motor housing 11. After the motor housing 11 and the water inlet cover 40 are plugged in, the first snap-fitting block 1113 can be rotated and snapped into the snap-fitting groove by rotating the motor housing 11 and / or the water inlet cover 40, so as to realize the axial snap-fitting limit between the water inlet cover 40 and the motor housing 11. Taking the insertion of the motor housing 11 into the water inlet cover 40 as an example, in order to make the first clamping block 1113 and the clamping groove at the same height after the motor housing 11 and the water inlet cover 40 are plugged in, a limit block 42 is set on the inner wall surface of the water inlet cover 40. The limit block 42 can be specifically set as a closed annular structure, or a plurality of limit blocks can be set along the circumferential section of the water inlet cover 40. When the end face of the motor housing 11 away from the water pipe connector 15 abuts against the limit block 42, the first clamping block 1113 is opposite to the clamping groove, and the first clamping block 1113 can be clamped into the clamping groove by relatively rotating the first clamping block 1113. More specifically, the clamping groove is enclosed by the limit block 42 and the second clamping block 41, and the second clamping block 41 is set to be "L"-shaped.

[0053] It should be emphasized that in order to prevent foreign matter from flowing in from the gap between the water inlet cover 40 and the motor housing 11, the main housing 111 is divided into a main body 1111 and a plug-in part 1112. The first clamping block 1113 is arranged on the outer wall surface of the plug-in part 1112. The outer diameter of the plug-in part 1112 is smaller than the outer diameter of the main body 1111 so that it can be smoothly inserted into the water inlet cover 40. The width of the gap between the outer wall surface of one end of the main body 1111 connected to the plug-in part 1112 and the inner wall surface of the water inlet cover 40 is smaller than the width of the slot. For example, the radius of the outer wall surface of the main body 1111 can be set to be consistent with the inner diameter of the inner wall surface of the water inlet cover 40. After the main housing 111 is inserted into the water inlet cover 40, the outer wall surface of the main body 1111 fits the inner wall surface of the water inlet cover 40.

[0054] Taking the example of a case where the clamping groove is arranged on the inner wall surface of the water inlet cover 40 and the first clamping block 1113 is arranged on the outer wall surface of the motor housing 11, a deformation gap 111a extending along the axial direction is arranged on both sides of at least one first clamping block 1113 on the motor housing 11. The first clamping block 1113 abuts against the inner wall surface of the water inlet cover 40, which can prevent relative rotation between the water inlet cover 40 and the motor housing 11 to a certain extent, thereby preventing the first clamping block 1113 from detaching from the clamping groove, thereby maintaining the stability of the connection between the water inlet cover 40 and the motor housing 11.

[0055] At the same time, the axial flow water pump also includes a connector disposed at the bottom of the water inlet cover 40, which is used to fix the entire axial flow water pump to the bottom of the aquarium. At this time, the axial flow water pump absorbs water from the bottom of the aquarium, and when replacing the sewage in the aquarium, the cleaning is more thorough. Considering the convenience of connection, the connector is preferably a suction cup, and a plurality of suction cups are circumferentially disposed at the bottom of the water inlet cover 40.

[0056] When the axial flow water pump is applied to an aquarium, under the action of the rotating impeller 30, the water in the aquarium is sucked into the impeller cavity through the water inlet cover 40, and then flows to the water pipe joint 15 through the guide pipe 114, thereby reducing the volume of the required pipelines connected to other systems. In addition, the water inlet cover 40 arranged at the bottom of the axial flow water pump can introduce the sewage in the aquarium into the impeller cavity as much as possible, and the water replacement effect is good.

[0057] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A water pump motor, characterized in that: include: Motor housing (11); A water pipe joint (15) connected to one axial end of the motor housing (11); A rotor sleeve (113) is axially arranged in the motor housing (11); one end of the rotor sleeve (113) close to the water pipe joint (15) is closed, and the other end is connected to the motor housing (11); the rotor sleeve (113) divides the inner cavity of the motor housing (11) into a rotor cavity (11a) and a stator cavity (11b); A rotor (12) is rotatably sleeved on a rotating shaft (16) disposed in the rotor cavity (11a), wherein one end of the rotating shaft (16) away from the water pipe joint (15) extends out of the rotor cavity (11a); A stator core (13) and an excitation coil (14) are located in the stator cavity (11b); the excitation coil (14) is wound around the stator core (13); and when energized, the excitation coil (14) can generate a magnetic field on the stator core (13) for rotating the rotor (12); A flow guide pipe (114) is axially arranged in the stator cavity (11b); the flow guide pipe (114) is in communication with the outside world; water flows from the outside world through the flow guide pipe (114) into the water pipe joint (15).

2. The water pump motor according to claim 1, characterized in that: The plurality of flow guide pipes (114) are symmetrically arranged on the outer periphery of the rotor sleeve (113).

3. The water pump motor according to claim 1, characterized in that: The motor housing (11) comprises a main housing (111) and an upper cover (112) which are separately arranged; the main housing (111) and the upper cover (112) enclose the inner cavity; the stator core (13) and the excitation coil (14) are located in the main housing (111); the main housing (111) is filled with potting glue; the water pipe joint (15) is connected to the upper cover (112); and the guide pipe (114) is integrally formed with the main housing (111) and inserted into the upper cover (112).

4. Axial flow water pump, characterized in that: The invention comprises an impeller (30), a bottom cover (20) and a water pump motor (10) as claimed in any one of claims 1 to 3, wherein the bottom cover (20) is connected to an end of the motor housing (11) away from the water pipe joint (15) to form an impeller cavity, the impeller (30) is located in the impeller cavity and connected to the rotor (12), the guide pipe (114) is connected to the impeller cavity, and a connecting port (20a) connected to the outside is provided on the impeller cavity.

5. The axial flow water pump according to claim 4, characterized in that: The bottom cover (20) is also provided with a positioning sleeve (21), and the rotating shaft (16) is inserted into the positioning sleeve (21) and is circumferentially limited in the positioning sleeve (21).

6. The axial flow water pump according to claim 5, characterized in that: The communication port (20a) and the impeller (30) are coaxial, and the positioning sleeve (21) is located inside the communication port (20a).

7. The axial flow water pump according to claim 4, characterized in that: It also includes a water inlet cover (40) connected to the motor housing (11), wherein the water inlet cover (40) covers the bottom cover (20) therein, and a plurality of strip-shaped slots communicating with the outside are arranged on the water inlet cover (40) along the circumferential direction.

8. The axial flow water pump according to claim 7, characterized in that: The water inlet cover (40) and the motor housing (11) are snap-connected.

9. The axial flow water pump according to claim 8, characterized in that: The inner wall surface of the water inlet cover (40) is protrudingly provided with a clamping groove extending in the circumferential direction, one end of the clamping groove is open, and the outer wall surface of the motor housing (11) is provided with a first clamping block (1113), the first clamping block (1113) can be rotatably clamped into the clamping groove, and the motor housing (11) is provided with deformation seams (111a) extending in the axial direction on both sides of at least one of the first clamping blocks (1113), and the first clamping block (1113) is in contact with the inner wall surface of the water inlet cover (40).

10. The axial flow water pump according to claim 7, characterized in that: It also comprises a connecting piece, which is arranged at the bottom of the water inlet cover (40).

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