Magnetic type waterproof water pump

Abstract

The utility model discloses a magnetic type waterproof water pump which comprises a bottom shell, a pump shell installed on the bottom shell in a sealed mode, a cover plate installed on the pump shell in a sealed mode, an impeller installed in the pump shell through a shaft body, a motor module used for driving the impeller to rotate and a PCB, and a water separation cavity is formed between the pump shell and the bottom shell. The motor module comprises a motor installed in the water separation cavity, a rotating disc installed on a rotating shaft of the motor and a first magnet installed on the rotating disc. A gap is formed between the turntable and the outer surface of the pump shell; a second magnet is arranged on the impeller and located in the pump shell, and the second magnet and the first magnet are mutually attracted and positioned through magnetic force. After the motor drives the rotating disc and the first magnet to rotate through the rotating shaft, the second magnet and the impeller are driven to rotate through magnetic attraction force between the first magnet and the second magnet, the motor, a PCB and other electric parts can be all arranged in the waterproof cavity through the separated driving rotating mode, and the waterproof purpose can be achieved without glue pouring.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump products, in particular to a magnetic suction type waterproof water pump. Background Art

[0002] The micro water pump is used in liquid for a long time. The electronic components and motors in the PCBA control board of the micro water pump are easily affected by moisture and aged. Therefore, glue is usually poured into the waterproof cavity of the pump to ensure the dryness of the PCBA control board.

[0003] The Chinese utility model patent with authorization announcement number CN210218228U discloses a micro pump with a glue-filling structure, which includes a pump head, a pump housing, an isolation chamber, a connecting shaft, a rotor, a rotor sleeve, a stator motor and a PCBA control board; the pump head and the isolation chamber cover are closed on the opening of the pump housing; the isolation chamber is placed in the pump housing and the pump head, and the isolation chamber separates the cavity in the pump housing and the pump head into a pump chamber and a pump waterproof chamber; the rotor is placed in the pump chamber; the connecting shaft is inserted into the rotor sleeve, and the two ends are fixedly connected to the pump head and the isolation chamber respectively; the rotor sleeve is embedded in the rotor; the stator motor and the PCBA control board are in the pump waterproof chamber; the pump housing is a barrel-shaped structure, and a rear cover is provided at the bottom of the barrel, and the rear cover is movably connected to the barrel body of the pump housing. The above-mentioned micro pump protects the electronic components in the PCBA control board from aging due to moisture by filling glue in the pump waterproof chamber, and protects the micro pump from normal use in diving.

[0004] The above-mentioned micro pump has the following shortcomings: the above-mentioned micro pump is waterproofed by wrapping the electronic components in the PCBA control board and other parts in the pump waterproof cavity by glue filling, but this structure becomes an integral whole and cannot be disassembled, and thus cannot be repaired and maintained, resulting in a shorter service life of the product.

[0005] Alternatively, the motor in the water pump is directly connected to the impeller placed in the water through a shaft, and the shaft cannot be completely sealed with the pump casing. That is, during actual use, water vapor will also enter through the gap on the outer surface of the shaft, causing the inside of the motor to become damp, affecting the service life of the product.

[0006] In view of this, the inventor proposes the following technical solution. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and provide a magnetic suction type waterproof water pump.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: the magnetic waterproof water pump includes a bottom shell, a pump shell sealed on the bottom shell, a cover plate sealed on the pump shell, an impeller rotatably installed inside the pump shell through an axis, and a motor module for driving the impeller to rotate and a PCB board electrically connected to the motor module, a water-proof cavity is formed between the pump shell and the bottom shell; the motor module includes a motor installed in the water-proof cavity, a turntable installed on the rotating shaft of the motor, and a first magnet installed on the turntable; a gap is formed between the turntable and the outer surface of the pump shell; a second magnet adapted to the position of the first magnet is provided on the impeller, the second magnet is located inside the pump shell, and is mutually attracted and positioned with the first magnet by magnetic force; when the motor drives the turntable and the first magnet to rotate through the rotating shaft, the second magnet and the impeller are driven to rotate by the magnetic attraction between the first magnet and the second magnet.

[0009] Furthermore, in the above technical solution, the axis center of the shaft body and the axis center of the rotating shaft are located on the same axis.

[0010] Furthermore, in the above technical solution, the first magnet is square, with a first positioning hole in the middle; the turntable is provided with a first positioning groove and a first positioning column located in the first positioning groove, the first magnet is embedded in the first positioning groove, and the first positioning hole and the first positioning column are embedded and positioned.

[0011] Furthermore, in the above technical solution, the second magnet is square and has a second positioning hole in the middle; the other side of the impeller with the blades is provided with a second positioning groove and a second positioning column located in the second positioning groove, the second magnet is embedded in the second positioning groove, and the second positioning hole and the second positioning column are embedded and positioned.

[0012] Furthermore, in the above technical solution, a support partition is also provided in the pump casing, the shaft body is installed on the support partition, and the support partition divides the inner cavity of the pump casing into a water inlet chamber and a water pumping chamber, and the support partition is provided with a plurality of through holes for connecting the water inlet chamber and the water pumping chamber, and the cover plate is provided on the water inlet chamber and the water pumping chamber, and a plurality of water inlet holes connected to the water inlet chamber and a water pumping outlet hole connected to the water pumping chamber are provided on the cover plate.

[0013] Furthermore, in the above technical solution, a convex ring is provided at the lower end of the cover plate, and the water outlet hole of the pump is located on the convex ring; the water inlet hole is located on the outside of the convex ring; a first convex edge is provided on the pump casing, and a second convex edge is provided on the support partition, the lower end surface of the cover plate abuts against the first convex edge and the second convex edge, and the inner side surface of the convex ring is also wrapped around the outer side surfaces of the first convex edge and the second convex edge.

[0014] Furthermore, in the above technical solution, a first rib and a second rib are provided at the bottom of the inner cavity of the pump casing, a limiting groove is formed between the first rib and the second rib, and the lower end of the support partition is embedded in the limiting groove.

[0015] Furthermore, in the above technical solution, a first accommodating groove is provided on the lower side of the pump housing, a second accommodating groove is provided on the bottom housing, and the upper and lower sides of the motor are respectively embedded in the first accommodating groove and the second accommodating groove.

[0016] Furthermore, in the above technical solution, a plurality of spaced support sheets are formed at the bottom of the second accommodating groove, and the upper ends of the support sheets abut against the lower side surfaces of the motor.

[0017] Furthermore, in the above technical solution, a water tank is sealed and installed on the bottom shell, and the water tank is placed above the cover plate. The PCB board includes a charging PCB board and a control PCB board fixed in the bottom shell. The charging interface of the charging PCB board is exposed on the outer side of the bottom shell. The control PCB board is provided with a plurality of control buttons 921, and control buttons corresponding to the control buttons are provided on the outer side of the bottom shell.

[0018] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model separates the motor and the impeller, and does not connect them together. Instead, the motor is arranged outside the pump casing and isolated from water vapor. At the same time, a turntable with a first magnet is arranged on the rotating shaft of the motor, and a second magnet is arranged on the impeller. The turntable and the impeller are positioned by the magnetic attraction of the first magnet and the second magnet. After the motor drives the turntable to rotate, the impeller can be driven to rotate. This separated driving rotation mode can make the electrical parts such as the motor and the PCB board be arranged in the waterproof cavity, and the purpose of waterproofing can be achieved without glue filling, and it is convenient for later maintenance. At the same time, it can also avoid water vapor from entering the motor, thereby increasing the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a structural diagram of the utility model from another perspective;

[0021] Figure 3 It is an exploded view of the utility model;

[0022] Figure 4 It is a cross-sectional view of the utility model;

[0023] Figure 5 It is the internal structure diagram of the utility model;

[0024] Figure 6 It is an assembly drawing of the impeller in the utility model;

[0025] Figure 7 It is a three-dimensional diagram of the pump housing in the utility model;

[0026] Figure 8 It is a three-dimensional diagram of the motor module in the utility model;

[0027] Fig. 9 It is a stereoscopic diagram of the utility model after the water tank is installed. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with specific embodiments and drawings.

[0029] See Figure 1-9 As shown, a magnetic waterproof water pump is provided, which includes a bottom shell 1, a pump shell 2 sealedly mounted on the bottom shell 1, a cover plate 3 sealedly mounted on the pump shell 2, an impeller 5 rotatably mounted inside the pump shell 2 via a shaft 4, and a motor module 6 for driving the impeller 5 to rotate and a PCB board electrically connected to the motor module 6, wherein a water-proof cavity 10 is formed between the pump shell 2 and the bottom shell 1. The motor module 6 includes a motor 61 installed in the water-proof chamber 10, a turntable 63 installed on the rotating shaft 62 of the motor 61, and a first magnet 64 installed on the turntable 63; a gap is formed between the turntable 63 and the outer surface of the pump casing 2; the impeller 5 is provided with a second magnet 51 that is adapted to the position of the first magnet 64, and the second magnet 51 is located inside the pump casing 2 and is positioned by mutual attraction with the first magnet 64 through magnetic force; when the motor 61 drives the turntable 63 and the first magnet 64 to rotate through the rotating shaft 62, the second magnet 51 and the impeller 5 are driven to rotate through the magnetic attraction force between the first magnet 64 and the second magnet 51. That is to say, the utility model separates the motor 61 from the impeller 5 and does not connect them together. Instead, the motor 61 is arranged outside the pump casing 2 and isolated from water vapor. At the same time, a turntable 63 with a first magnet 64 is arranged on the rotating shaft 62 of the motor 61, and a second magnet 51 is arranged on the impeller 5. The turntable 63 and the impeller 5 are positioned by the magnetic attraction of the first magnet 64 and the second magnet 51. After the motor drives the turntable 63 to rotate, it can drive the impeller 5 to rotate. This separated driving rotation mode can make the motor 61 and electrical parts such as PCB boards all be arranged in the waterproof cavity 10, and the purpose of waterproofing can be achieved without glue filling, and it is convenient for later maintenance. At the same time, it can also avoid water vapor from entering the motor 61, thereby increasing the service life of the product.

[0030] The axis of the shaft body 4 and the axis of the rotating shaft 62 are located on the same axis, thereby ensuring that the rotating disk 63 drives the impeller 5 to rotate stably through the magnetic attraction force of the first magnet 64 and the second magnet 51 .

[0031] The first magnet 64 is square, and a first positioning hole 641 is provided in the middle thereof; the turntable 63 is provided with a first positioning groove 631 and a first positioning column 632 located in the first positioning groove 631, the first magnet 64 is embedded in the first positioning groove 631, and the first positioning hole 641 and the first positioning column 632 are embedded and positioned, thereby ensuring that the first magnet 64 is stably installed on the turntable 63. In addition, glue can be added at the position where the first magnet 64 contacts the first positioning groove 631, thereby further increasing the stability of the assembly of the first magnet 64 and the turntable 63.

[0032] The second magnet 51 is square, and a second positioning hole 511 is provided in the middle thereof; the other side of the impeller 5 provided with the blade 52 is provided with a second positioning groove 53 and a second positioning column 54 located in the second positioning groove 53, the second magnet 51 is embedded and installed in the second positioning groove 53, and the second positioning hole 511 and the second positioning column 54 are embedded and positioned, thereby ensuring that the second magnet 51 is stably installed on the impeller 5. In addition, glue can be added at the position where the second magnet 51 contacts the second positioning groove 53, thereby further increasing the stability of the assembly of the second magnet 51 and the impeller 5.

[0033] The pump housing 2 is also provided with a support partition 7, the shaft body 4 is mounted on the support partition 7, and the support partition 7 divides the inner cavity of the pump housing 2 into a water inlet cavity 201 and a water pump cavity 202, and the support partition 7 is provided with a plurality of through holes 71 for connecting the water inlet cavity 201 and the water pump cavity 202, the cover plate 3 is provided on the water inlet cavity 201 and the water pump cavity 202, and the cover plate 3 is provided with a plurality of water inlet holes 31 connecting the water inlet cavity 201 and a water pumping outlet hole 32 connecting the water pump cavity 202. When working, water enters the water inlet cavity 201 from the water inlet hole 31, and then enters the water pump cavity 202 from the through hole 71, and after the impeller 5 rotates, the water in the water pump cavity 202 can be pumped out from the water pumping outlet hole 32, thereby completing the function of the water pump.

[0034] The lower end of the cover plate 3 is provided with a convex ring 33, and the water pump outlet 32 ​​is located on the convex ring 33; the water inlet 31 is located outside the convex ring 33; the pump housing 2 is provided with a first convex edge 21, and the support partition 7 is provided with a second convex edge 72. The lower end surface of the cover plate 3 abuts against the first convex edge 21 and the second convex edge 72, and the inner side surface of the convex ring 33 is also wrapped around the outer side surface of the first convex edge 21 and the second convex edge 72, thereby ensuring the stability of the assembly structure therebetween. Among them, the bottom of the inner cavity of the pump housing 2 is provided with a first rib 22 and a second rib 23, and a limiting groove 24 is formed between the first rib 22 and the second rib 23. The lower end of the support partition 7 is embedded in the limiting groove 24, so that the support partition 7 is more stably installed between the pump housing 2 and the cover plate 3.

[0035] The pump housing 2 is provided with a first receiving groove 25 at the lower side, and the bottom housing 1 is provided with a second receiving groove 11 . The upper and lower sides of the motor 61 are respectively embedded in the first receiving groove 25 and the second receiving groove 11 to ensure the stability of the motor 61 structure.

[0036] A plurality of spaced support sheets 111 are formed at the bottom of the second accommodating groove 11 , and the upper ends of the support sheets 111 abut against the lower side of the motor 61 to form multi-point contact, thereby being able to more stably support the motor 61 and facilitating heat dissipation of the motor 61 .

[0037] A water tank 8 for holding water is sealed and mounted on the bottom shell 1, and the water tank 8 is placed above the cover plate 3. The PCB board includes a charging PCB board 91 and a control PCB board 92 fixed in the bottom shell 1. The charging interface 911 provided on the charging PCB board 91 is exposed on the outer side of the bottom shell 1. The control PCB board 92 is provided with a plurality of control buttons 921. The outer side of the bottom shell 1 is provided with a control button 12 corresponding to the control button 921. The bottom shell 1 is also provided with a battery for power supply, and the battery is connected to the charging PCB board 91 and the control PCB board 92.

[0038] The bottom shell 1 includes a shell body 101 and a base 102 which are fixedly connected.

[0039] To sum up, the utility model separates the motor 61 from the impeller 5 and does not connect them together. Instead, the motor 61 is arranged outside the pump casing 2 and isolated from water vapor. At the same time, a turntable 63 with a first magnet 64 is arranged on the rotating shaft 62 of the motor 61, and a second magnet 51 is arranged on the impeller 5. The turntable 63 and the impeller 5 are positioned by the magnetic attraction of the first magnet 64 and the second magnet 51. After the motor drives the turntable 63 to rotate, it can drive the impeller 5 to rotate. This separated driving rotation mode can make the motor 61 and electrical parts such as PCB boards all be arranged in the waterproof cavity 10, and the purpose of waterproofing can be achieved without glue filling, and it is convenient for later maintenance. At the same time, it can also avoid water vapor from entering the motor 61, thereby increasing the service life of the product.

[0040] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A magnetic suction waterproof water pump, comprising a bottom shell (1), a pump shell (2) sealedly mounted on the bottom shell (1), a cover plate (3) sealedly mounted on the pump shell (2), an impeller (5) rotatably mounted inside the pump shell (2) via a shaft (4), a motor module (6) for driving the impeller (5) to rotate, and a PCB board electrically connected to the motor module (6), wherein a water-proof cavity (10) is formed between the pump shell (2) and the bottom shell (1); Features: The motor module (6) comprises a motor (61) installed in the water-proof chamber (10), a turntable (63) installed on the rotating shaft (62) of the motor (61), and a first magnet (64) installed on the turntable (63); a gap is formed between the turntable (63) and the outer surface of the pump casing (2); a second magnet (51) adapted to the position of the first magnet (64) is arranged on the impeller (5), the second magnet (51) is located inside the pump casing (2), and is mutually attracted and positioned with the first magnet (64) by magnetic force; when the motor (61) drives the turntable (63) and the first magnet (64) to rotate through the rotating shaft (62), the second magnet (51) and the impeller (5) are driven to rotate by the magnetic attraction between the first magnet (64) and the second magnet (51).

2. A magnetic suction waterproof water pump according to claim 1, characterized in that: The axis center of the shaft body (4) and the axis center of the rotating shaft (62) are located on the same axis.

3. A magnetic suction waterproof water pump according to claim 1, characterized in that: The first magnet (64) is square in shape, and a first positioning hole (641) is provided in the middle thereof; the turntable (63) is provided with a first positioning groove (631) and a first positioning column (632) located in the first positioning groove (631); the first magnet (64) is embedded in the first positioning groove (631), and the first positioning hole (641) and the first positioning column (632) are embedded and positioned.

4. A magnetic suction waterproof water pump according to claim 3, characterized in that: The second magnet (51) is square, and a second positioning hole (511) is provided in the middle thereof; the other side of the impeller (5) provided with the blade (52) is provided with a second positioning groove (53) and a second positioning column (54) located in the second positioning groove (53); the second magnet (51) is embedded in the second positioning groove (53), and the second positioning hole (511) and the second positioning column (54) are embedded and positioned.

5. A magnetic suction waterproof water pump according to any one of claims 1 to 4, characterized in that: A support baffle (7) is also provided in the pump housing (2), the shaft body (4) is mounted on the support baffle (7), and the support baffle (7) divides the inner cavity of the pump housing (2) into a water inlet cavity (201) and a water pump cavity (202), and the support baffle (7) is provided with a plurality of through holes (71) for connecting the water inlet cavity (201) and the water pump cavity (202), and the cover plate (3) is provided on the water inlet cavity (201) and the water pump cavity (202), and a plurality of water inlet holes (31) connected to the water inlet cavity (201) and a water pump cavity (32) connected to the water pump cavity (202) are provided on the cover plate (3).

6. A magnetic suction waterproof water pump according to claim 5, characterized in that: A convex ring (33) is provided at the lower end of the cover plate (3), and the water pump outlet hole (32) is located on the convex ring (33); the water inlet hole (31) is located outside the convex ring (33); a first convex edge (21) is provided on the pump housing (2), and a second convex edge (72) is provided on the supporting partition plate (7); the lower end surface of the cover plate (3) abuts against the first convex edge (21) and the second convex edge (72), and the inner side surface of the convex ring (33) also covers the outer side surfaces of the first convex edge (21) and the second convex edge (72).

7. A magnetic suction waterproof water pump according to claim 5, characterized in that: A first rib (22) and a second rib (23) are provided at the bottom of the inner cavity of the pump casing (2), a limiting groove (24) is formed between the first rib (22) and the second rib (23), and the lower end of the supporting partition (7) is embedded in the limiting groove (24).

8. The magnetic suction waterproof water pump according to claim 5, characterized in that: The pump housing (2) is provided with a first accommodating groove (25) on the lower side, the bottom housing (1) is provided with a second accommodating groove (11), and the upper and lower sides of the motor (61) are respectively embedded in the first accommodating groove (25) and the second accommodating groove (11).

9. A magnetic suction waterproof water pump according to claim 8, characterized in that: A plurality of support sheets (111) distributed at intervals are also formed on the bottom of the second accommodating groove (11), and the upper ends of the support sheets (111) abut against the lower side surfaces of the motor (61).

10. A magnetic suction waterproof water pump according to claim 9, characterized in that: A water tank (8) is sealedly mounted on the bottom shell (1), and the water tank (8) is placed above the cover plate (3). The PCB board comprises a charging PCB board (91) and a control PCB board (92) fixed in the bottom shell (1). A charging interface (911) provided on the charging PCB board (91) is exposed on the outer side of the bottom shell (1). The control PCB board (92) is provided with a plurality of control buttons (921). Control buttons (12) corresponding to the control buttons (921) are provided on the outer side of the bottom shell (1).

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