Lightweight aerator driven by permanent magnet brushless motor

Abstract

The invention relates to the technical field of fishery aerators, in particular to a light-weight aerator driven by a permanent magnet brushless motor, which comprises an impeller connector, an impeller, a planetary reducer, a motor body, a motor controller, a floating ball connecting rod, a floating ball sleeve, a floating ball and a floating ball cover, the planetary reducer is detachably connected to the upper side of the impeller connector through a bolt, the motor body is detachably connected to the upper side of the planetary reducer through a bolt, the motor controller is detachably connected to the upper side of the motor body through a bolt, and the floating ball connecting rod is detachably connected to the outer side of the planetary reducer through a bolt. The floating ball sleeve is arranged at the end, away from the planetary reducer, of the floating ball connecting rod, the floating ball is arranged on one side of the floating ball sleeve, and the floating ball cover is arranged on the upper side of the floating ball.

Description

Technical Field

[0001] The invention relates to the technical field of fishery oxygenators, and in particular to a lightweight oxygenator driven by a permanent magnet brushless motor. Background Art

[0002] Aerator is a machine commonly used in fish farming. Its main function is to increase the oxygen content in the water to ensure that the fish in the water will not be deprived of oxygen. It can also inhibit the growth of anaerobic bacteria in the water and prevent the deterioration of the pond water and threaten the living environment of the fish. Aerators generally rely on their own air pump to pump air into the water to achieve the purpose of increasing the oxygen content in the water.

[0003] At present, traditional aerators on the market use three-phase asynchronous motors. The motor housing and the reduction box housing are cast iron, which are easy to rust and have a short service life. The weight of the whole machine is as high as about 50KG. The machine is laborious to reassemble. The motor efficiency is low, the power consumption is large, and the aerator has a single gear. For this reason, we proposed a lightweight aerator driven by a permanent magnet brushless motor. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a lightweight aerator driven by a permanent magnet brushless motor. The lightweight aerator driven by a brushless motor solves the problems that traditional aerators lack speed regulation function, are large in size and weight, affecting installation, and have low conversion efficiency of electrical energy into mechanical energy.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A lightweight aerator driven by a permanent magnet brushless motor, comprising an impeller connector, an impeller, a planetary reducer, a motor body, a motor controller, a float connecting rod, a float sleeve, a float and a float cover, wherein the impeller is detachably connected to the lower side of the impeller connector by bolts, the planetary reducer is detachably connected to the upper side of the impeller connector by bolts, the motor body is detachably connected to the upper side of the planetary reducer by bolts, the motor controller is detachably connected to the upper side of the motor body by bolts, the float connecting rod is detachably connected to the outer side of the planetary reducer by bolts, the float sleeve is arranged at one end of the float connecting rod away from the planetary reducer, the float is arranged on one side of the float sleeve, and the float cover is arranged on the upper side of the float.

[0007] Through the above technical scheme, the cooperation between the float connecting rod, the float sleeve, the float and the float cover provides a buoyancy support function for the device, the motor controller controls the operation of the motor body, the motor body drives the planetary reducer, and the planetary reducer drives the impeller on the impeller connector, thereby providing a variable speed adjustable boost function, which can be divided into three gear adjustments: high, medium and low.

[0008] Preferably, the planetary reducer includes a reducer housing, a secondary planetary reduction group is arranged on the inner side of the reducer housing, a primary planetary reduction group is arranged on the upper side of the secondary planetary reduction group, and an end connection group is arranged on the lower side of the secondary planetary reduction group.

[0009] Preferably, the secondary planetary reduction group includes a secondary planetary carrier, which is arranged at the inner bottom of the reduction box housing, a secondary gear shaft is arranged on the upper side of the secondary planetary carrier, a ball bearing 1 is arranged in the middle of the upper side of the secondary gear shaft, a needle bearing 1 is arranged on the upper side of the secondary gear shaft, a secondary planetary gear is arranged on the outer side of the needle bearing 1, a sun gear is arranged on one side of the secondary planetary gear, and an inner gear ring is arranged on one side of the sun gear.

[0010] Preferably, the first-stage planetary reduction group includes a first-stage planetary carrier, which is arranged on one side of the inner gear ring, a graphite gasket is arranged on one side of the first-stage planetary carrier, a first-stage gear shaft is arranged on one side of the graphite gasket, a locating pin is arranged on one side of the first-stage planetary carrier, a needle bearing 2 is arranged on the outer side of the first-stage gear shaft, a first-stage planetary gear is arranged on one side of the needle bearing 2, and a gasket is arranged on one side of the first-stage planetary gear.

[0011] Preferably, the end connection group includes ball bearing two, and the ball bearing two is arranged on the lower side of the secondary planetary carrier, and a flat key pin is arranged on the lower side of the secondary planetary carrier, and ball bearing three is arranged on the lower side of the ball bearing two, and a main oil seal is arranged on the lower side of the ball bearing three, and a secondary oil seal is arranged on the lower side of the main oil seal, and an output shaft is plugged into the lower side of the secondary planetary carrier.

[0012] Through the above technical solution, the planetary reducer adopts two-stage planetary reduction to increase the reduction ratio and amplify the output torque of the motor.

[0013] Preferably, the motor body includes a casing, a stator assembly is provided on the inner side of the casing, a rotor assembly is provided on one side of the stator assembly, a rear end cover is provided on one side of the casing, a sealing ring 1 is provided between the rear end cover and the casing, a plurality of waterproof joints are provided on the outer side of the rear end cover, a screw plug is provided on one side of the rear end cover, a front end cover is provided on the side of the casing away from the rear end cover, a sealing ring 2 is provided between the front end cover and the casing, a skeleton oil seal is provided on one side of the front end cover, bolts are inserted between the casing, the rear end cover and the front end cover, and a nut is threadedly connected to one end of the bolt.

[0014] Preferably, the stator assembly includes a front bobbin, which is arranged in the casing, a stator core is arranged on one side of the front bobbin, a slot insulating sheet is arranged in the stator core, a rear bobbin is arranged on one side of the stator core, an enameled wire winding is arranged on one side of the rear bobbin, a connecting terminal is arranged on one side of the enameled wire winding, and a lead wire is arranged on one side of the connecting terminal.

[0015] Preferably, the rotor assembly includes a front bearing, which is arranged on one side of the front wire frame, a rotating shaft is inserted into one side of the front bearing, a rotor core is arranged on the outside of the rotating shaft, a magnetic steel is inserted into the rotor core, and a rear bearing is arranged on one side of the rotor core.

[0016] Through the above technical solution, the motor body adopts a brushless motor with high power density, small size and large torque output. At the same time, the motor housing, front and rear end covers, electronic control box and reducer housing are made of aluminum alloy to reduce weight, ensuring that the aerator is smaller in size and lighter in weight, achieving product performance indicators, and the reduction ratio is 25 to 30 to 1, which is the speed range suitable for the motor with high efficiency and small size.

[0017] Preferably, the motor controller comprises an electric control box, a circuit board is arranged in the electric control box, and an electric control cover is arranged on one side of the electric control box.

[0018] To sum up, in the present invention, the motor body adopts a brushless motor, which has high power density, small size and large torque output. The planetary reducer adopts a two-stage planetary reducer to increase the reduction ratio and amplify the output torque of the motor. At the same time, the casing, rear end cover, front end cover, reducer housing and electronic control box are made of aluminum alloy to reduce weight, ensuring that the aerator is smaller in size and lighter in weight, and meeting product performance indicators. The setting of the planetary reducer enables the lightweight aerator driven by the brushless motor to have a variable speed adjustable boost function, which can be divided into three gears: high, medium and low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the front axial side of the present invention;

[0020] Figure 2 It is a schematic diagram of the exploded structure of the driving part of the present invention;

[0021] Figure 3 It is a schematic diagram of the exploded structure of the planetary reducer of the present invention;

[0022] Figure 4 It is a schematic diagram of the exploded structure of the motor body of the present invention;

[0023] Figure 5 It is a schematic diagram of the exploded structure of the motor controller of the present invention;

[0024] Figure 6 It is a schematic diagram of the exploded structure of the stator assembly of the present invention;

[0025] Figure 7 It is a schematic diagram of the exploded structure of the rotor assembly of the present invention.

[0026] In the figure: 1. impeller connector; 2. impeller; 3. planetary reducer; 31. reducer housing; 32. secondary planet carrier; 33. secondary gear shaft; 34. ball bearing 1; 35. needle bearing 1; 36. secondary planetary gear; 37. sun gear; 38. inner gear ring; 39. primary planet carrier; 310. graphite gasket; 311. primary gear shaft; 312. positioning pin; 313. needle bearing 2; 314. primary planetary gear; 315. gasket; 316. ball bearing 2; 317. flat key pin; 318. ball bearing 3; 319. main oil seal; 320. auxiliary oil seal; 321. output shaft; 4. motor body; 41. housing; 42. stator assembly ;421, front wire rack;422, stator core;423, slot insulating sheet;424, rear wire rack;425, enameled wire winding;426, terminal;427, lead wire;43, rotor assembly;431, front bearing;432, shaft;433, rotor core;434, magnet;435, rear bearing;44, rear end cover;45, sealing ring one;46, waterproof joint;47, screw plug;48, front end cover;49, sealing ring two;410, skeleton oil seal;411, bolt;412, nut;5, motor controller;51, electric control box;52, circuit board;53, electric control cover;6, float connecting rod;7, float sleeve;8, float;9, float cover. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-Figure 7 A lightweight aerator driven by a permanent magnet brushless motor comprises an impeller connector 1, an impeller 2, a planetary reducer 3, a motor body 4, a motor controller 5, a float connecting rod 6, a float sleeve 7, a float 8 and a float cover 9. The impeller 2 is detachably connected to the lower side of the impeller connector 1 by bolts.

[0029] The planetary reducer 3 is detachably connected to the upper side of the impeller connector 1 by bolts. The planetary reducer 3 includes a reducer housing 31. A secondary planetary reduction group is arranged on the inner side of the reducer housing 31. The secondary planetary reduction group includes a secondary planet carrier 32. The secondary planet carrier 32 is arranged at the inner bottom of the reducer housing 31. A secondary gear shaft 33 is arranged on the upper side of the secondary planet carrier 32. A ball bearing 1 34 is arranged in the middle of the upper side of the secondary gear shaft 33. A needle bearing 1 35 is arranged on the upper side of the secondary gear shaft 33. A secondary planetary gear 36 is arranged on the outer side of the needle bearing 1 35. A sun gear 37 is arranged on one side of the secondary planetary gear 36. An inner gear ring 38 is arranged on one side of the sun gear 37.

[0030] A primary planetary reduction group is arranged on the upper side of the secondary planetary reduction group, and the primary planetary reduction group includes a primary planet carrier 39, which is arranged on one side of the inner gear ring 38, a graphite gasket 310 is arranged on one side of the primary planet carrier 39, a primary gear shaft 311 is arranged on one side of the graphite gasket 310, a positioning pin 312 is arranged on one side of the primary planet carrier 39, a needle bearing 2 313 is arranged on the outer side of the primary gear shaft 311, a primary planetary gear 314 is arranged on one side of the needle bearing 2 313, and a gasket 315 is arranged on one side of the primary planetary gear 314.

[0031] An end connection group is arranged at the lower side of the secondary planetary reduction group, and the end connection group includes a second ball bearing 316, and the second ball bearing 316 is arranged at the lower side of the secondary planetary carrier 32, and a flat key pin 317 is arranged at the lower side of the secondary planetary carrier 32, and a third ball bearing 318 is arranged at the lower side of the second ball bearing 316, and a main oil seal 319 is arranged at the lower side of the third ball bearing 318, and a secondary oil seal 320 is arranged at the lower side of the main oil seal 319, and an output shaft 321 is plugged into the lower side of the secondary planetary carrier 32.

[0032] The motor body 4 is detachably connected to the upper side of the planetary reducer 3 by bolts. The motor body 4 includes a casing 41. A stator assembly 42 is arranged on the inner side of the casing 41. The stator assembly 42 includes a front bobbin 421. The front bobbin 421 is arranged in the casing 41. A stator core 422 is arranged on one side of the front bobbin 421. A slot insulating sheet 423 is arranged in the stator core 422. A rear bobbin 424 is arranged on one side of the stator core 422. An enameled wire winding 425 is arranged on one side of the rear bobbin 424. A terminal 426 is arranged on one side of the enameled wire winding 425. A lead wire 427 is arranged on one side of the terminal 426.

[0033] A rotor assembly 43 is disposed on one side of the stator assembly 42. The rotor assembly 43 includes a front bearing 431. The front bearing 431 is disposed on one side of the front bobbin 421. A rotating shaft 432 is inserted into one side of the front bearing 431. A rotor core 433 is disposed on the outer side of the rotating shaft 432. A magnetic steel 434 is inserted into the rotor core 433. A rear bearing 435 is disposed on one side of the rotor core 433.

[0034] A rear end cover 44 is provided on one side of the housing 41, a sealing ring 1 45 is provided between the rear end cover 44 and the housing 41, a plurality of waterproof joints 46 are provided on the outer side of the rear end cover 44, a screw plug 47 is provided on one side of the rear end cover 44, a front end cover 48 is provided on the side of the housing 41 away from the rear end cover 44, a sealing ring 2 49 is provided between the front end cover 48 and the housing 41, a skeleton oil seal 410 is provided on one side of the front end cover 48, a bolt 411 is inserted between the housing 41, the rear end cover 44 and the front end cover 48, one end of the bolt 411 is threadedly connected with a nut 412,

[0035] The motor controller 5 is detachably connected to the upper side of the motor body 4 by bolts. The motor controller 5 includes an electric control box 51. A circuit board 52 is arranged in the electric control box 51. An electric control cover 53 is arranged on one side of the electric control box 51.

[0036] The float connecting rod 6 is detachably connected to the outside of the planetary reducer 3 by bolts, the float sleeve 7 is arranged at the end of the float connecting rod 6 away from the planetary reducer 3, the float 8 is arranged on one side of the float sleeve 7, and the float cover 9 is arranged on the upper side of the float 8.

[0037] In this embodiment, the motor controller 5 controls the motor body 4 to work, the motor body 4 drives the planetary reducer 3, and the planetary reducer 3 drives the impeller 2 on the impeller connector 1 to perform a variable speed adjustable boost, which can be divided into three gears of high, medium and low.

[0038] It should be noted that the motor body 4 adopts a brushless motor. Compared with the traditional AC asynchronous motor, the brushless motor has significantly improved efficiency and low power consumption, which helps farmers save breeding costs.

[0039] This lightweight aerator driven by a brushless motor weighs about 18.5KG. The light weight of the machine can reduce the installation labor intensity of farmers.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lightweight aerator driven by a permanent magnet brushless motor, characterized in that: include Impeller connector (1), An impeller (2), wherein the impeller (2) is detachably connected to the lower side of the impeller connector (1) by means of bolts; A planetary reducer (3), wherein the planetary reducer (3) is detachably connected to the upper side of the impeller connector (1) by means of bolts; A motor body (4), wherein the motor body (4) is detachably connected to the upper side of the planetary reducer (3) by means of bolts; A motor controller (5), wherein the motor controller (5) is detachably connected to the upper side of the motor body (4) by means of bolts; A floating ball connecting rod (6), wherein the floating ball connecting rod (6) is detachably connected to the outer side of the planetary reducer (3) by means of bolts; A float sleeve (7), wherein the float sleeve (7) is arranged at an end of the float connecting rod (6) away from the planetary reducer (3); A float (8), wherein the float (8) is arranged on one side of the float sleeve (7); A float cover (9), wherein the float cover (9) is arranged on the upper side of the float (8).

2. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 1, characterized in that: The planetary reducer (3) comprises a reduction gearbox housing (31), a secondary planetary reduction group is arranged on the inner side of the reduction gearbox housing (31), a primary planetary reduction group is arranged on the upper side of the secondary planetary reduction group, and an end connection group is arranged on the lower side of the secondary planetary reduction group.

3. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 2, characterized in that: The two-stage planetary reduction group comprises a two-stage planet carrier (32), the two-stage planet carrier (32) is arranged at the inner bottom of the reduction box housing (31), a two-stage gear shaft (33) is arranged on the upper side of the two-stage planet carrier (32), a ball bearing 1 (34) is arranged in the middle of the upper side of the two-stage gear shaft (33), a needle bearing 1 (35) is arranged on the upper side of the two-stage gear shaft (33), a two-stage planetary gear (36) is arranged on the outer side of the needle bearing 1 (35), a sun gear (37) is arranged on one side of the two-stage planetary gear (36), and an inner gear ring (38) is arranged on one side of the sun gear (37).

4. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 3, characterized in that: The first-stage planetary reduction group comprises a first-stage planet carrier (39), the first-stage planet carrier (39) is arranged on one side of the inner gear ring (38), a graphite gasket (310) is arranged on one side of the first-stage planet carrier (39), a first-stage gear shaft (311) is arranged on one side of the graphite gasket (310), a positioning pin (312) is arranged on one side of the first-stage planet carrier (39), a second needle bearing (313) is arranged on the outer side of the first-stage gear shaft (311), a first-stage planet gear (314) is arranged on one side of the second needle bearing (313), and a gasket (315) is arranged on one side of the first-stage planet gear (314).

5. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 3, characterized in that: The end connection group includes a second ball bearing (316), wherein the second ball bearing (316) is arranged on the lower side of the secondary planetary carrier (32), a flat key pin (317) is arranged on the lower side of the secondary planetary carrier (32), a third ball bearing (318) is arranged on the lower side of the second ball bearing (316), a main oil seal (319) is arranged on the lower side of the third ball bearing (318), a secondary oil seal (320) is arranged on the lower side of the main oil seal (319), and an output shaft (321) is plugged into the lower side of the secondary planetary carrier (32).

6. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 1, characterized in that: The motor body (4) comprises a casing (41), a stator assembly (42) is arranged on the inner side of the casing (41), a rotor assembly (43) is arranged on one side of the stator assembly (42), a rear end cover (44) is arranged on one side of the casing (41), a sealing ring (45) is arranged between the rear end cover (44) and the casing (41), a plurality of waterproof joints (46) are arranged on the outer side of the rear end cover (44), and a sealing ring (45) is arranged on one side of the rear end cover (44). A screw plug (47) is provided, a front end cover (48) is provided on the side of the housing (41) away from the rear end cover (44), a sealing ring (49) is provided between the front end cover (48) and the housing (41), a skeleton oil seal (410) is provided on one side of the front end cover (48), a bolt (411) is inserted between the housing (41), the rear end cover (44) and the front end cover (48), and one end of the bolt (411) is threadedly connected to a nut (412).

7. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 6, characterized in that: The stator assembly (42) comprises a front bobbin (421), the front bobbin (421) being arranged in a housing (41), a stator core (422) being arranged on one side of the front bobbin (421), a slot insulating sheet (423) being arranged in the stator core (422), a rear bobbin (424) being arranged on one side of the stator core (422), an enameled wire winding (425) being arranged on one side of the rear bobbin (424), a connection terminal (426) being arranged on one side of the enameled wire winding (425), and a lead wire (427) being arranged on one side of the connection terminal (426).

8. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 7, characterized in that: The rotor assembly (43) comprises a front bearing (431), wherein the front bearing (431) is arranged on one side of the front bobbin (421), a rotating shaft (432) is inserted into one side of the front bearing (431), a rotor core (433) is arranged on the outer side of the rotating shaft (432), a magnetic steel (434) is inserted into the rotor core (433), and a rear bearing (435) is arranged on one side of the rotor core (433).

9. A lightweight oxygenator driven by a permanent magnet brushless motor according to claim 1, characterized in that: The motor controller (5) comprises an electric control box (51), a circuit board (52) is arranged inside the electric control box (51), and an electric control cover (53) is arranged on one side of the electric control box (51).

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