Water pump

Abstract

The utility model provides a water pump which comprises a motor module and a waterway module, the motor module comprises a stator, a rotor and a motor shell, the waterway module comprises an impeller and a waterway shell, a magnet on the rotor and a magnet on the impeller attract each other through magnetic force, and the motor shell is detachably connected with the waterway shell. The waterway shell extends downwards to form the accommodating space surrounded by the inner wall, the motor module is accommodated in the accommodating space, and the rotor is directly exposed out of the accommodating space, so that the external structure of the rotor is reduced, the total weight of the motor module is reduced, and the service life of the motor module is prolonged. The rotor can penetrate into the water path shell in the axial direction, so that the total length of the motor module is further shortened in the axial direction; and meanwhile, the rotor is protected by the accommodating space, and the total volume of the water pump is also compressed. Therefore, the utility model is more beneficial to the disassembly and installation of the motor module.

Description

Technical Field

[0001] The utility model relates to a water pump. Background Art

[0002] The water pump in the prior art includes a motor module and a water channel module. When water flows into the water channel module, the power part of the motor module can drive the rotating part to rotate, thereby driving the impeller in the water channel module to rotate, thereby achieving the effect of pumping water. After the water pump has been running for a long time, the motor module is prone to failure and needs to be replaced. In the prior art, water pumps are mostly one-piece designs. Generally speaking, the motor module is fixed to the water channel module by fixing screws, which results in the need to replace the water pump as a whole after the motor module fails, which is costly; or, first remove the joint installed on the water channel of the water pump, remove the water pump as a whole, and then remove or repair the motor module. Both processes are relatively complicated. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a water pump in order to overcome the defects of the prior art that when the motor of the water pump fails, the water pump needs to be replaced as a whole at a high cost and the process is relatively complicated when the motor needs to be dismantled or repaired.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A water pump comprises a motor module and a water circuit module. The motor module comprises a stator, a rotor and a motor housing. The water circuit module comprises an impeller and a water circuit housing. The magnets on the rotor and the impeller are attracted to each other by magnetic force. The motor housing and the water circuit housing are detachably connected.

[0006] The water channel housing extends downward to form a containing space surrounded by an inner wall. The motor module is contained in the containing space, wherein the rotor is exposed in the containing space.

[0007] In the technical solution, a water pump is provided, which includes a motor module and a water channel module. The motor module includes a stator, a rotor and a motor housing. The water channel module includes an impeller and a water channel housing. The magnets on the rotor and the impeller are attracted by magnetic force. The motor housing and the water channel housing are detachably connected, so that the motor module and the water channel module are independent of each other. The motor module drives the impeller to rotate by magnetic force rather than mechanical connection. When the motor module fails, it is convenient to remove and replace the motor module alone instead of removing the entire water pump from the water channel, thereby ensuring fast and convenient maintenance. The water channel housing extends downward and forms a receiving space surrounded by an inner wall. The motor module is accommodated in the receiving space, wherein the rotor is directly exposed in the receiving space. Such a structural setting reduces the structure outside the rotor, not only reduces the total weight of the motor module, but also enables the rotor to penetrate into the interior of the water channel housing in the axial direction, further shortening the total length of the motor module in the axial direction; at the same time, the water channel housing extends downward and forms a receiving space surrounded by an inner wall to protect the rotor, and also compresses the total volume of the water pump. Therefore, the utility model is more conducive to the disassembly and installation of the motor module.

[0008] Preferably, the inner wall of the waterway housing is provided with a plurality of bosses, the motor housing is provided with a plurality of grooves corresponding to the bosses, the plurality of bosses together limit the rotation of the motor housing in the circumferential direction, and the grooves can slide along the axial direction of the bosses; or,

[0009] The inner wall of the waterway housing is provided with a plurality of grooves, and the motor housing is provided with a plurality of bosses corresponding to the grooves. The plurality of bosses together limit the rotation of the motor housing in the circumferential direction, and the grooves can slide along the axial direction of the bosses.

[0010] In the present technical solution, by providing the above-mentioned convex column and groove matching connection, unnecessary rotation of the motor housing during operation can be avoided with a relatively simple structure, thereby improving the safety of the motor module.

[0011] Preferably, an end of the protruding column abuts against the motor housing, so that a distance is formed between the rotor and an end inside the water channel housing.

[0012] In the present technical solution, by setting the end of the protruding column to abut against the motor housing and forming a distance between the rotor and the end inside the water channel housing, a relatively simple structure can be used to avoid the rotor colliding with the end inside the water channel housing during rotation, thereby affecting the operation of the water pump.

[0013] Preferably, the number of the protrusions and the grooves is greater than or equal to three.

[0014] In the present technical solution, by setting the number of bosses and grooves to be greater than or equal to three, the motor housing can be further stabilized and the safety of the motor module can be improved.

[0015] Preferably, the motor housing is a plate-shaped structure.

[0016] In the present technical solution, by setting the motor housing to a plate-like structure, the structure of the motor housing can be made simpler, which further facilitates the disassembly and installation of the motor module.

[0017] Preferably, the motor housing covers an open end of the accommodating space.

[0018] In the present technical solution, by arranging the motor housing to cover the open end of the accommodating space, it is possible to avoid the problem that when the water pump is running, foreign matter from the outside enters the accommodating space and affects the rotation of the rotor.

[0019] Preferably, the water pump further comprises a threaded fastener, and the motor housing is connected to the water circuit housing via the threaded fastener.

[0020] In the present technical solution, by arranging the water pump to also include threaded fasteners, the motor housing is connected to the water circuit housing through the threaded fasteners, and the stability of the connection between the motor module and the water circuit module can be ensured with a relatively simple structure.

[0021] Preferably, the motor housing is provided with a first through hole, the boss is provided with a second through hole, and the threaded fastener is passed through the first through hole and the second through hole.

[0022] In the present technical solution, by providing a first through hole on the motor housing, a second through hole on the boss, and threaded fasteners passing through the first through hole and the second through hole, the stability of the connection between the motor module and the water module can be further ensured with a relatively simple structure.

[0023] Preferably, the water outlet of the water channel module corresponds to the position of the rotating blades of the impeller.

[0024] In the present technical solution, by arranging the water outlet of the water channel module to correspond to the position of the rotating blades of the impeller, the water pumping efficiency of the water pump can be improved.

[0025] Preferably, the water outlet is trumpet-shaped, and a side of the water outlet with a larger cross-section is away from the impeller.

[0026] In the present technical solution, by setting the water outlet to be trumpet-shaped and the side of the water outlet with a larger cross-section being away from the impeller, the water pumping efficiency of the water pump can be further improved.

[0027] The positive and progressive effects of the utility model are:

[0028] A water pump is provided, which includes a motor module and a waterway module. The motor module includes a stator, a rotor and a motor housing. The waterway module includes an impeller and a waterway housing. The magnets on the rotor and the impeller are attracted by magnetic force. The motor housing and the waterway housing are detachably connected, so that the motor module and the waterway module are independent of each other. The motor module drives the impeller to rotate by magnetic force rather than mechanical connection. When the motor module fails, it is convenient to remove and replace the motor module alone instead of removing the entire water pump from the waterway, so as to ensure fast and convenient maintenance. The waterway housing extends downward and forms a receiving space surrounded by an inner wall. The motor module is accommodated in the receiving space, wherein the rotor is directly exposed in the receiving space. Such a structural setting reduces the structure outside the rotor, not only reduces the total weight of the motor module, but also enables the rotor to penetrate into the interior of the waterway housing in the axial direction, further shortening the total length of the motor module in the axial direction; at the same time, the waterway housing extends downward and forms a receiving space surrounded by an inner wall to protect the rotor, and also compresses the total volume of the water pump. Therefore, the utility model is more conducive to the disassembly and installation of the motor module. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic cross-sectional structure diagram of a water pump according to a preferred embodiment of the utility model.

[0030] Figure 2 It is a structural schematic diagram of a water channel module according to a preferred embodiment of the utility model.

[0031] Figure 3 It is a structural schematic diagram of a motor module according to a preferred embodiment of the utility model.

[0032] Figure 4 The figure is a schematic diagram of the exploded structure of a water pump according to a preferred embodiment of the utility model.

[0033] Figure 5 The figure is a schematic diagram of the overall structure of a water pump according to a preferred embodiment of the utility model.

[0034] Description of reference numerals:

[0035] Motor module 1

[0036] Stator 11

[0037] Rotor 12

[0038] Motor housing 13

[0039] First through hole 131

[0040] Groove 14

[0041] Waterway module 2

[0042] Impeller 21

[0043] Waterway housing 22

[0044] Accommodation space 23

[0045] Boss 24

[0046] The second through hole 241

[0047] Water outlet 25

[0048] Magnet 3 DETAILED DESCRIPTION

[0049] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0050] like Figure 1-Figure 5 As shown, this embodiment provides a water pump, which includes a motor module 1 and a waterway module 2. The motor module 1 includes a stator 11, a rotor 12 and a motor housing 13. The waterway module 2 includes an impeller 21 and a waterway housing 22. The magnet 3 on the rotor 12 and the magnet 3 on the impeller 21 are attracted by magnetic force, and the motor housing 13 is detachably connected to the waterway housing 22. In this way, the motor module 1 and the waterway module 2 can be made independent of each other. The motor module 1 drives the impeller 21 to rotate by magnetic force rather than mechanical connection. When the motor module 1 fails, it is convenient to remove and replace the motor module 1 alone, rather than removing the entire water pump from the waterway, so as to ensure fast and convenient maintenance. The waterway housing 22 extends downward and forms a receiving space 23 surrounded by an inner wall. The motor module 1 is accommodated in the receiving space 23, wherein the rotor 12 is exposed in the receiving space 23. In this way, the volume of the motor module 1 can be further reduced, the structural complexity of the motor module 1 can be reduced, and the disassembly and installation of the motor module 1 can be more convenient.

[0051] Specifically, in the present embodiment, the magnetic poles of the magnets 3 on the rotor 12 and the magnets 3 on the impeller 21 are in opposite directions and correspond to each other, so as to achieve the effect of driving the impeller 21 to rotate through the rotation of the rotor 12 .

[0052] In this embodiment, the inner wall of the waterway housing 22 is provided with three bosses 24, and the motor housing 13 is provided with three grooves 14 corresponding to the bosses 24. The three bosses 24 together limit the rotation of the motor housing 13 in the circumferential direction, and the grooves 14 can slide along the axial direction of the bosses 24. In this way, by setting the bosses 24 and the grooves 14 as above to cooperate and connect, the motor housing 13 can be prevented from unnecessary rotation during operation with a relatively simple structure, thereby improving the safety of the motor module 1. In other embodiments, the number of bosses 24 and grooves 14 can be set to be greater than three to further stabilize the motor housing 13 and improve the safety of the motor module 1.

[0053] Similarly, in other embodiments, the following structure can be set up to achieve a similar effect: the inner wall of the water channel shell is provided with a plurality of grooves, and the motor shell is provided with a plurality of bosses corresponding to the grooves, and the plurality of bosses together limit the rotation of the motor shell in the circumferential direction, and the grooves can slide along the axial direction of the bosses.

[0054] In this embodiment, the end of the protrusion 24 abuts against the motor housing 13, and a distance is formed between the rotor 12 and the end inside the water channel housing 22. In this way, a relatively simple structure can be used to prevent the rotor 12 from colliding with the end inside the water channel housing 22 during rotation, thereby affecting the operation of the water pump.

[0055] In this embodiment, the motor housing 13 is a plate-shaped structure, so that the structure of the motor housing 13 can be relatively simple, which further facilitates the disassembly and installation of the motor module 1.

[0056] In this embodiment, the motor housing 13 covers the open end of the accommodating space 23. In this way, it is possible to avoid the problem that foreign matter from the outside enters the accommodating space 23 and affects the rotation of the rotor 12 when the water pump is running.

[0057] In this embodiment, the water pump further includes a threaded fastener (not shown in the figure), and the motor housing 13 is connected to the water circuit housing 22 through the threaded fastener. In this way, the stability of the connection between the motor module and the water circuit module can be ensured with a relatively simple structure.

[0058] In this embodiment, the motor housing 13 is provided with a first through hole 131, the boss 24 is provided with a second through hole 241, and the threaded fasteners are passed through the first through hole 131 and the second through hole 241. In this way, the stability of the connection between the motor module and the water channel module can be further ensured with a relatively simple structure.

[0059] In this embodiment, the water outlet 25 of the water channel module 2 corresponds to the position of the rotating blades of the impeller 21. In this way, the water pumping efficiency of the water pump can be improved.

[0060] In this embodiment, the water outlet 25 is trumpet-shaped, and the side of the water outlet 25 with a larger cross section is away from the impeller 21. In this way, the water pumping efficiency of the water pump can be further improved.

[0061] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A water pump, comprising a motor module and a water channel module, wherein the motor module comprises a stator, a rotor and a motor housing, the water channel module comprises an impeller and a water channel housing, the magnets on the rotor and the impeller are attracted to each other by magnetic force, and the motor housing and the water channel housing are detachably connected, characterized in that: The water channel housing extends downward to form a containing space surrounded by an inner wall, the motor module is contained in the containing space, and the rotor is exposed in the containing space.

2. The water pump according to claim 1, characterized in that The inner wall of the waterway housing is provided with a plurality of convex columns, the motor housing is provided with a plurality of grooves corresponding to the convex columns, the plurality of convex columns together limit the rotation of the motor housing in the circumferential direction, and the grooves can slide along the axial direction of the convex columns; or, The inner wall of the waterway housing is provided with a plurality of grooves, and the motor housing is provided with a plurality of bosses corresponding to the grooves. The plurality of bosses together limit the rotation of the motor housing in the circumferential direction, and the grooves can slide along the axial direction of the bosses.

3. The water pump according to claim 2, characterized in that: The end of the protruding column abuts against the motor housing, and forms a distance between the rotor and the end inside the water channel housing.

4. The water pump according to claim 2, characterized in that: The number of the protrusions and the grooves is greater than or equal to three.

5. The water pump according to claim 1, characterized in that: The motor housing is a plate-shaped structure.

6. The water pump according to claim 5, characterized in that The motor housing covers the open end of the accommodating space.

7. The water pump according to claim 1, characterized in that The water pump further comprises a threaded fastener, and the motor housing is connected to the water circuit housing via the threaded fastener.

8. The water pump according to claim 7, characterized in that The inner wall of the waterway housing is provided with a plurality of convex columns, and the motor housing is provided with a plurality of grooves corresponding to the convex columns, the plurality of convex columns together limit the rotation of the motor housing in the circumferential direction, and the grooves can slide along the axial direction of the convex columns; The motor housing is provided with a first through hole, the boss is provided with a second through hole, and the threaded fastener is passed through the first through hole and the second through hole.

9. The water pump according to claim 1, characterized in that: The water outlet of the water channel module corresponds to the position of the rotating blades of the impeller.

10. The water pump according to claim 9, characterized in that The water outlet is trumpet-shaped, and a side of the water outlet with a larger cross section is away from the impeller.

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