CN110810318B

CN110810318B - A kind of aerator and frequency conversion control method thereof

Info

Publication number: CN110810318B
Application number: CN201911163799.5A
Authority: CN
Inventors: 蒋欢军; 赵芝荷; 蒋谨遥; 蒋昕哲
Original assignee: Taizhou Star Oxygen Electric Co ltd
Current assignee: Taizhou Star Oxygen Electric Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2021-07-09
Anticipated expiration: 2039-11-25
Also published as: CN113455457B; CN113575499A; CN113575499B; CN110810318A; CN113455457A

Abstract

The invention discloses an aerator, comprising a motor assembly (1), a plurality of floating plates (2) connected radially and uniformly in the circumferential direction of the motor assembly, each floating plate is connected with a floating ball (3), and the motor assembly (1) The lower side of the ) is driven and connected with a blade, and it is characterized in that: the motor assembly (1) includes a frequency conversion motor, and in the manual mode, the frequency parameter can be input to the upper computer through the input terminal, and the upper computer performs frequency conversion control on the frequency conversion motor of the motor assembly. For the first time, the invention proposes to use the method of continuous on-off operation of the power-on switch to carry out the frequency conversion control of the motor in the manual mode, so that the frequency conversion gear can be accurately selected according to the operator's wishes.

Description

Aerator and variable frequency control method thereof

Technical Field

The invention relates to the field of fishpond feeding, in particular to an aerator and a frequency conversion control method thereof.

Background

Dissolved oxygen is an important production factor of aquaculture, has an important influence on the growth of aquatic animals in the aquaculture environment, determines the growth condition, survival rate and disease incidence rate of fishes, influences pond culture density, is a key factor for improving the yield of a fishpond, and is increasingly emphasized as a water environment factor which needs to be controlled. Generally, the dissolved oxygen content of the pond is required to be higher than 4mg/L, if the dissolved oxygen content of the pond is lower than 2mg/L, diseases can be bred, the growth of aerobic seedlings in a water body is inhibited, however, anaerobic bacteria can decompose residual baits and generate a large amount of toxic substances such as ammonia gas and the like. The cultured fishes can generate floating heads and even pool flooding, which brings huge loss to aquaculture. At present, the common method is that an aerator is started when the fish pond is lack of oxygen, and the fish and the shrimps can be prevented from floating. When the machine is started when the upper layer of dissolved oxygen is high in sunny days, the convection of the water body can be accelerated, the dissolved oxygen in the middle and lower layers of the water body is improved, the quick growth of fishes and shrimps is facilitated, the bait coefficient is reduced, the oxidative decomposition of organic matters is promoted, and the occurrence of diseases is reduced. In addition, the circulating flow of the water body also promotes the propagation and growth of plankton, and the primary productivity of the pond is improved. For example, patent CN109090011A discloses a solar oxygen increasing machine which increases the mobility of water in the form of impeller pumping water, thereby increasing oxygen.

The main detection structure of the aerator is a dissolved oxygen sensor, which is already the prior art, such as the research on dissolved oxygen detection and sensing technology in the university of great university, "qiu chun", the university of Beijing chemical industry, which lists various dissolved oxygen sensors and means for communication connection with an upper computer, and these are all the prior arts. However, in the prior art, after the aerator is used for a long time, plankton and the like in water can be attached to the dissolved oxygen probe to form a layer of film, so that the data measured by the dissolved oxygen probe cannot be accurate, the aerator can automatically increase or reduce power output according to the data provided by the dissolved oxygen probe, the data measured by the dissolved oxygen probe cannot be accurate, the energy consumption of the machine is increased invisibly, the practical service life of the machine is shortened, and the maintenance is very troublesome.

The fish farming industry is troubled by the technical problem of inaccurate measurement of the dissolved oxygen probe caused by the attachment of plankton.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a technical scheme capable of improving the measurement capability of the dissolved oxygen probe aiming at the defects in the prior art.

The utility model provides an oxygen-increasing machine, includes motor element, a plurality of kickboards of radial even connection in the motor element week, connects a floater on every kickboard, and the drive of motor element downside is connected with the blade, and motor element includes inverter motor, and under manual mode, can carry out frequency conversion control to motor element's inverter motor through the input to the host computer input frequency parameter, host computer.

The manual mode is that the input end is an electrifying switch, and continuous frequency increasing or reducing operation is manually executed by continuously switching on or off the electrifying switch.

Still include under the automatic mode, first dissolved oxygen sensor and second dissolved oxygen sensor are installed to the downside of motor element's support frame, be equipped with outer blade on motor element's drive sleeve, be equipped with the inner blade on motor element's the motor shaft, the circumference outside at the inner blade is established to outer blade, when outer blade and inner blade syntropy are in the same angular velocity rotation, for the oxygenation operating mode, when outer blade and the reverse different angular velocity rotation of inner blade, mix rivers and wash first dissolved oxygen sensor and second dissolved oxygen sensor, for washing the operating mode.

Furthermore, a support frame of the motor assembly is fixedly connected with the floating plate, a driving sleeve is rotatably arranged in the support frame through a bearing, the front end of the driving sleeve is provided with a flange and is fixedly connected with an outer blade, the rear end of the driving sleeve is fixedly connected with a rotor, an opening of the rotor is backwards arranged and covers the stator, and the upper surface of the inner part of the rotor is coaxially and fixedly connected with an inner gear sleeve; the motor shaft is rotatably arranged in the driving sleeve, one end of the motor shaft is a shaft head end, the other end of the motor shaft is a spline and is fixedly connected with an inner blade, a central gear is fixedly sleeved on the motor shaft, the mounting frame and the cover plate are fixedly connected to form a mounting frame assembly, a plurality of planet wheel shafts are arranged in the cavity of the mounting frame assembly in the circumferential direction, and the planet wheel shafts are sleeved on the planet wheel shafts and are in inward meshing transmission with the central gear; the inner gear sleeve is arranged between the outer ring of the cover plate and the inner wall of the mounting frame and is meshed with the planetary gear to drive inwards, and the planetary gear is meshed with the central gear and the inner gear of the inner gear sleeve simultaneously.

The sliding sleeve is arranged on the outer side of the mounting frame in an axially slidable manner through the sliding sleeve inner teeth; the two ends of the sliding sleeve are provided with first teeth towards one side of the rotor, and second teeth are arranged on the side back to the rotor; the inner surface of the upper shell is coaxially and fixedly provided with an upper toothed ring, a bottom toothed ring is coaxially and fixedly arranged on a flange of an inner toothed sleeve at the upper part of the inner side of the rotor, and the sliding sleeve can be alternatively meshed with the upper toothed ring and the bottom toothed ring.

Furthermore, an iron cylinder is arranged on the outer peripheral surface of the sliding sleeve, electromagnets are fixedly arranged on the inner surfaces of the outer side and the upper shell of the sliding sleeve, when the electromagnets are powered on, the iron cylinder is attracted by magnetic force generated by the electromagnets, the sliding sleeve is upwards meshed with the upper toothed ring, when the electromagnets are powered off, the sliding sleeve is pushed to the bottom toothed ring by a spring and is meshed with the bottom toothed ring, the electromagnet is sleeved outside the sliding sleeve and is fixedly connected with the stator, the electromagnets are arranged inside the stator, and the spring is arranged between the sliding sleeve and the upper shell.

A frequency conversion control method of an aerator comprises the steps that an upper computer judges whether a manual mode or an automatic mode is executed; when the manual mode is executed, the aerator performs frequency conversion control on the motor assembly according to the frequency parameters input by the input end; when the automatic mode is executed, a first dissolved oxygen sensor of the aerator acquires a first dissolved oxygen value DO 1; the second dissolved oxygen sensor obtains a second dissolved oxygen value DO 2; uploading the data to an upper computer; the upper computer judges whether the difference value of the first dissolved oxygen value DO1 and the second dissolved oxygen value DO2 is smaller than a reasonable range delta, if the difference value is smaller than the reasonable range delta, then judges whether oxygenation is carried out, and if the difference value is larger than the reasonable range delta, the values of the first dissolved oxygen value DO1 and the second dissolved oxygen value DO2 are obtained again after the flushing working condition is carried out; when the oxygen is required to be increased, the variable frequency oxygen increasing is carried out according to the first dissolved oxygen value DO1 and the second dissolved oxygen value DO 2.

Furthermore, after the aerator is started up, the first dissolved oxygen value DO1 and the second dissolved oxygen value DO2 are obtained after the aerator is washed for a preset time.

Has the advantages that:

1) the method is characterized in that the variable frequency control of the motor is carried out in a manual mode by using a mode of continuous on-off operation of the power-on switch, so that the variable frequency gear is accurately selected according to the will of an operator.

2) Compared with the prior art, propose automatic mode for the first time and improved the detection means of dissolved oxygen, specifically be motor element below and be equipped with the dissolved oxygen sensor above the blade, and the blade can wash the dissolved oxygen sensor through stirring rivers. The invention greatly facilitates the maintenance of the dissolved oxygen sensor, which is not considered before by the skilled person that the blades used for oxygenation are directly used for washing the dissolved oxygen sensor. The method for removing the phytoplankton on the surface of the dissolved oxygen sensor is put forward for the first time, namely the dissolved oxygen sensor above the blades is acted on the surface of the dissolved oxygen sensor by adopting water flows in different directions, so that the cleaning effect is achieved.

3) In the aspect of control means, the reliability of the system is judged firstly, whether the sensor works normally is judged, and then the dissolved oxygen state of the water body is judged, so that a better control effect is obtained, the dissolved oxygen sensor can better monitor than the prior art, the water body condition is objectively reflected, and the technical problem in the background art of the invention is solved. The invention takes the two obtained dissolved oxygen parameters as monitoring objects at the same time, which not only forms redundancy on reliability for detecting the dissolved oxygen in water, but also eliminates the adverse effect of floating swimming plants on the sensor by comparing the two dissolved oxygen parameters.

4) In the aspect of mechanical transmission of the whole system, due to the adoption of a transmission structure with a simplified structure, the switching of two different working conditions can be realized only by using one set of power source.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the motor assembly of the present invention;

FIG. 3 is an automatic mode flow diagram of the present invention.

Description of reference numerals:

the device comprises a motor assembly 1, a floating plate 2, a floating ball 3, a hanger 4, an outer blade 41, an inner blade 5, a motor shaft 101, a spline 102, a shaft head end 103, a planet carrier lower sleeve 104, a mounting frame upper sleeve 105, an upper toothed ring 106, a sliding sleeve inner tooth 107, a sliding sleeve 108, an electromagnet 109, an upper shell 110, a stator 111, a rotor 112, a support frame 113, a first dissolved oxygen sensor 114, a bearing 115, a shaft sleeve 116, a first seal 117, a mounting flange 118, a second seal 119, a rotor sleeve 120, an inner toothed sleeve 121, a spring 122, a mounting frame 123, a planet wheel shaft 124, a central gear 125, a planet gear 126, a driving sleeve 127, a second dissolved oxygen sensor 128, a cover plate 129, a bottom toothed ring 130, a first tooth 131 and an iron cylinder 132.

Detailed Description

The following description of the embodiments of the present invention refers to the accompanying drawings and examples:

it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the following claims, and all modifications of the structures, changes in the proportions and adjustments of the sizes and other dimensions which are within the scope of the disclosure should be understood and encompassed by the present disclosure without affecting the efficacy and attainment of the same.

In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The embodiment of the invention provides an aerator which is placed in water and floats on the water surface like the prior art and comprises a motor assembly 1, the motor assembly 1 is uniformly connected with a plurality of floating plates 2 in a circumferential and radial mode, each floating plate 2 is connected with a floating ball 3, the lower side of the motor assembly 1 is in driving connection with blades, the motor assembly comprises a variable frequency motor, in a manual mode, frequency parameters can be input to an upper computer through an input end, and the upper computer performs variable frequency control on the variable frequency motor of the motor assembly. The manual mode is that the input end is an electrifying switch, and continuous frequency increasing or reducing operation is manually executed by continuously switching on or off the electrifying switch.

Still include under the automatic mode, in this embodiment, compare with prior art, improved the means of detection of dissolved oxygen, specifically be motor element 1 below and be equipped with the dissolved oxygen sensor above the blade, and the blade can wash the dissolved oxygen sensor through stirring rivers. The skilled person has not previously considered that the blades used for oxygenation are directly used for washing the dissolved oxygen sensor, which greatly facilitates the maintenance of the dissolved oxygen sensor.

Further, the applicant has found that it is difficult to determine whether phytoplankton are attached to the outer surface of a single dissolved oxygen sensor, i.e., the dissolved oxygen sensor itself cannot determine the operating state of the sensor. The applicant therefore proposes to use two dissolved oxygen sensors for the determination, in particular, a first dissolved oxygen sensor 114 and a second dissolved oxygen sensor 128 mounted on the lower side of the support frame 113 of the motor assembly 1, both of which are connected to the upper computer, the driving sleeve 127 of the motor component 1 is provided with an outer blade 41, the motor shaft 101 of the motor component 1 is provided with an inner blade 5, the outer blade 41 is arranged on the circumferential outer side of the inner blade 5, the first dissolved oxygen sensor 114 and the second dissolved oxygen sensor 128 are both positioned above the annular area between the outer blade 41 and the inner blade 5, when the outer blade 41 and the inner blade 5 rotate at the same angular speed in the same direction, the aeration working condition is achieved, and when the outer blade 41 and the inner blade 5 rotate at different angular speeds in opposite directions, the first dissolved oxygen sensor 114 and the second dissolved oxygen sensor 128 are washed by the stirring water flow, and the washing working condition is achieved. If the first dissolved oxygen sensor 114 and the second dissolved oxygen sensor 128 have poor detection ability, it is considered that at least one dissolved oxygen sensor having poor detection ability has a large number of phytoplankton attached, and therefore, the flushing operation is required.

In the prior art, the blades are all a group of axial flow blades which enable water flow to flow in a vertical plane in a single direction. In the present embodiment, the two sets of blades are divided into the inner blade 5 and the outer blade 41, and the inner blade 5 and the outer blade 41 are driven independently and can rotate in the same direction or in opposite directions. When the water-saving pond rotates in the same direction and at the same angular speed, the inner blade and the outer blade can be regarded as a whole, and like the prior art, the water flows unidirectionally in a vertical plane while rotating, so that oxygen in the air is driven to enter a water body and diffuse into the pond; when the blades rotate reversely and at different speeds, strong turbulence is generated around the outer peripheries of the first dissolved oxygen sensor 114 and the second dissolved oxygen sensor 128 due to the different directions of the water flow driven by the inner and outer blades, and particularly, the first dissolved oxygen sensor 114 and the second dissolved oxygen sensor 128 are washed more effectively when the inner and outer blades 5 are switched back and forth in clockwise and counterclockwise directions. After the working condition of flushing, the parameters of two dissolved oxygen are collected again, and whether the flushing effect is achieved or whether further flushing is needed is judged. Although the flushing working condition can flush the dissolved oxygen sensor and also enables water flow to move, the oxygenation effect is general, because the whole water flow is less in contact with the outside air, and more water flows collide with each other underwater, therefore, the flushing working condition cannot replace the oxygenation working condition.

A preferred embodiment is that when the aerator is started up, the working condition of flushing is forced to initialize the working capacities of the first dissolved oxygen sensor 114 and the second dissolved oxygen sensor 128, so as to prevent plankton adhesion of the two sensors in the same water area to the same extent, thereby causing misjudgment of the aerator.

As for the oxygen increasing working condition and the flushing working condition of the oxygen increasing machine, the above-mentioned embodiment is not limited in more structure, and a person skilled in the art can select a driving form according to the requirement of a rotating mode, in the prior art, a dual-motor driving system is optionally used to drive the inner blade and the outer blade respectively, but for the consideration of energy consumption and cost, the following embodiment provides a single-driving-source motor assembly with stable transmission to implement the above-mentioned inventive concept.

A support frame 113 of the motor assembly 1 is fixedly connected with the floating plate 2, a driving sleeve 127 is rotatably arranged in the support frame 113 through a bearing 115, the front end of the driving sleeve 127 is provided with an flange 118 and is fixedly connected with an outer blade 41, the rear end of the driving sleeve 127 is fixedly connected with a rotor 112, an opening of the rotor 112 is arranged backwards and is covered on the stator 111, and the inner upper surface of the rotor 112 is coaxially and fixedly connected with an inner gear sleeve 121; the motor shaft 101 is rotatably arranged in the driving sleeve 127, one end of the motor shaft 101 is a shaft head end 103, the other end of the motor shaft 101 is a spline 102 and is fixedly connected with the inner blade 5, a central gear 125 is fixedly sleeved on the motor shaft 101, an installation frame 123 is concentrically arranged on the outer side of the motor shaft 101, a flange of the inner gear sleeve 121 is fixedly connected with the upper surface of the rotor 112, a plurality of planet wheel shafts 124 are fixedly arranged on the installation frame 123, a planet gear 126 is sleeved on the planet wheel shafts 124, the planet gear 126 is simultaneously engaged with the inner teeth of the central gear 125 and the inner gear sleeve 121, the installation frame 123 and the cover plate 129 are fixedly connected to form an installation frame assembly, a plurality of planet wheel shafts 124 are arranged on the inner circumference of the cavity of the installation frame assembly, and the planet gear 126 is sleeved; the inner gear sleeve 121 is arranged between the outer ring of the cover plate 129 and the inner wall of the mounting frame 123 and is meshed with the planet gears 126 to drive inwards.

The aerator also comprises a sliding sleeve 108, a sliding groove is fixedly arranged on the outer wall of the mounting rack 123, sliding sleeve inner teeth 107 are arranged on the inner ring of the sliding sleeve 108, and the sliding sleeve 108 is axially slidably arranged outside the mounting rack 123 through the sliding sleeve inner teeth 107; two ends of the sliding sleeve 108 are provided with first teeth towards one side of the rotor 112, and second teeth opposite to one side of the rotor 112; the upper toothed ring 106 is coaxially fixed on the inner surface of the upper shell 110, the bottom toothed ring 130 is coaxially fixed on the flange of the upper inner toothed sleeve 121 on the inner side of the rotor 112, the sliding sleeve 108 comprises an iron cylinder 132 on the outer peripheral surface, an electromagnet 109 is also fixedly arranged outside the sliding sleeve 108 and on the bottom surface of the upper shell 110, when the electromagnet 109 is powered on, the iron cylinder 132 of the sliding sleeve 108 is attracted by the magnetic force generated by the electromagnet 109, the sliding sleeve 108 is upwards meshed with the upper toothed ring 106, and when the electromagnet 109 is powered off, the sliding sleeve 108 is pushed to the bottom toothed ring 130 by the spring 122 to be meshed with the bottom toothed ring 130. The electromagnet is sleeved outside the sliding sleeve 108 and fixedly connected with the stator 111, the electromagnet is arranged inside the stator 111, and the spring 122 is arranged between the sliding sleeve 108 and the upper shell.

It will be appreciated by those skilled in the art that the sliding sleeve 108 can be actuated in a variety of ways, such as by a fork in a vehicle, which can also be moved back and forth between two operating positions under the excitation of an electrical circuit, simply by actuating the fork with the valve stem of a solenoid to move the sliding sleeve 108.

When the aerator is used, if a washing working condition is required, when the sliding sleeve 108 is meshed with the upper toothed ring 106, the upper shell stator fixes the sliding sleeve 108, the sliding teeth of the sliding sleeve 108 fix the mounting frame 123 and the planetary wheel shaft 124 and the cover plate 129 which are arranged in the mounting frame 123, the rotor directly drives the driving sleeve 127 and drives the outer blades 41, meanwhile, the inner toothed sleeve 121 fixed on the rotor 112 drives the planetary gear 126 and drives the central gear 125, and finally the inner blades 5 are driven to rotate in the direction opposite to that of the outer blades 41, so that water flow is stirred together.

If the oxygen increasing working condition needs to be entered, the sliding sleeve is downwards meshed with the bottom gear ring 130 under the action of the spring 122, at the moment, the planet wheel shaft 124, the motor shaft 101 and the planet gear 126 on the mounting rack 123 are all fixed into a whole by rotors, do not rotate mutually, and drive the outer blade 41 and the inner blade 5 to rotate in the same direction and at the same speed as a whole.

In this embodiment, a frequency conversion control method of an aerator is also provided, which specifically comprises:

s1), the aerator starts to work, and the upper computer judges whether to execute a manual mode or an automatic mode;

when the manual mode is executed, the aerator performs frequency conversion control on the motor assembly according to the frequency parameters input by the input end;

when the automatic mode is executed, enabling the dissolved oxygen sensor;

s2) when the automatic mode is executed, the first dissolved oxygen sensor 114 of the aerator acquires a first dissolved oxygen value DO 1; the second dissolved oxygen sensor 128 acquires a second dissolved oxygen value DO 2; uploading the data to an upper computer;

s3) the upper computer judges whether the difference value between the first dissolved oxygen value DO1 and the second dissolved oxygen value DO2 is smaller than a reasonable range delta, if yes, S4 is carried out, if not, after the flushing working condition is carried out, S2 is returned;

s4) the upper computer judges whether one of the first dissolved oxygen value DO1 and the second dissolved oxygen value DO2 is lower than the minimum value X, if so, the operation enters S5, and if not, the operation returns to S2; the lowest value is set artificially, and can be selected by referring to the threshold value in the background art, such as 2-4 mg/L;

s5) selecting the output power of the motor assembly according to the first dissolved oxygen value DO1 and/or the second dissolved oxygen value DO2, and entering a frequency conversion oxygen increasing condition; the frequency conversion control is the prior art, and is widely used in household appliances, so that the embodiment does not give much description on the frequency conversion itself;

s6) ends.

Therefore, in the above embodiment, the two acquired dissolved oxygen parameters are simultaneously used as monitoring objects, which not only forms redundancy in reliability for detection of dissolved oxygen in water, but also eliminates adverse effects of floating plants on the sensor by comparing the two dissolved oxygen parameters.

The embodiment further provides a specific control means, namely, the reliability of the system is judged firstly, whether the sensor works normally is judged, and then the dissolved oxygen state of the water body is judged, so that a better control effect is obtained, the dissolved oxygen sensor can better monitor than the prior art, the water body condition is objectively reflected, and the technical problem in the background art of the invention is solved.

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.

Claims

1. An aerator, comprising a motor assembly (1), a plurality of floating plates (2) are evenly connected radially in the circumferential direction of the motor assembly, and a floating ball (3) is connected to each floating plate, and the lower part of the motor assembly (1); The side drive is connected with a blade, and it is characterized in that: the motor assembly (1) includes a frequency conversion motor, and in the manual mode, the frequency parameter can be input to the upper computer through the input terminal, and the upper computer performs frequency conversion control on the frequency conversion motor of the motor assembly;

The manual mode is that the input terminal is a power-on switch, and the continuous frequency increase or frequency reduction operation is manually performed by the number of times the power-on switch is continuously turned on and off;

An automatic mode is also included. In the automatic mode, a dissolved oxygen sensor is provided below the motor assembly (1) and above the blade, and the blade can wash the dissolved oxygen sensor by stirring the water flow; the support frame (113) of the motor assembly (1) A first dissolved oxygen sensor (114) and a second dissolved oxygen sensor (128) are installed on the lower side of the motor assembly (1), and an outer blade (41) is provided on the drive sleeve (127) of the motor assembly (1). The motor shaft (101) is provided with an inner blade (5), and the outer blade (41) is arranged on the outer circumferential side of the inner blade (5). When the outer blade (41) and the inner blade (5) rotate in the same direction and at the same angular velocity, In the oxygen-enhancing condition, when the outer blade and the inner blade rotate in opposite directions at different angular velocities, the first dissolved oxygen sensor (114) and the second dissolved oxygen sensor (128) are flushed by agitating the water flow, which is the flushing condition.

2. An aerator according to claim 1, characterized in that: the support frame (113) of the motor assembly (1) is fixedly connected to the floating plate (2), and the support frame (113) passes through the bearing (115) inside. A drive sleeve (127) is rotatably provided, the front end of the drive sleeve (127) is mounted with a flange (118), an outer blade (41) is fixedly connected, and a rotor (112) is fixedly connected at the rear end, and the rotor (112) opens toward the The inner gear sleeve (121) is fixedly connected to the inner upper surface of the rotor (112) coaxially; the motor shaft (101) is rotatably arranged in the drive sleeve (127) , one end of the motor shaft (101) is the shaft head end (103), the other end is the spline (102), and the inner blade (5) is fixedly connected, and the motor shaft (101) is also fixedly sleeved with a central gear (102). 125), the mounting frame (123) and the cover plate (129) are fixedly connected to form a mounting frame assembly, a plurality of planetary wheel shafts (124) are arranged on the circumference of the cavity of the mounting frame assembly, and the planetary gears (126) are sleeved on the planetary wheel shafts (125). 124), and inwardly engages with the central gear (125) for transmission; the inner gear sleeve (121) is arranged between the outer ring of the cover plate (129) and the inner wall of the mounting bracket (123), and is inwardly connected to the planetary gear (126) In meshing transmission, the planetary gear (126) meshes with the central gear (125) and the inner teeth of the inner gear sleeve (121) at the same time.

3. An aerator according to claim 2, characterized in that: it further comprises a sliding sleeve (108), the outer wall of the mounting frame (123) is fixedly provided with a sliding groove, and the inner ring of the sliding sleeve (108) is provided with a sliding groove. The sleeve inner teeth (107), the sliding sleeve (108) is axially slidably arranged on the outer side of the mounting frame (123) through the sliding sleeve inner teeth (107); There are first teeth, and the side facing away from the rotor (112) is provided with a second tooth; the inner surface of the upper casing (110) is coaxially fixed with an upper gear ring (106), and the inner upper inner gear sleeve (121) of the rotor (112) is fixed coaxially. A bottom gear ring (130) is fixed coaxially on the flange of the ), and the sliding sleeve (108) can selectively engage with the upper gear ring (106) and the bottom gear ring (130).

4. An aerator according to claim 3, characterized in that: the outer peripheral surface of the sliding sleeve (108) is provided with an iron cylinder (132), and the outer surface of the sliding sleeve (108) and the inner surface of the upper shell (110) are also fixed There is an electromagnet (109), when the electromagnet (109) is energized, the iron cylinder (132) is attracted by the magnetic force generated by the electromagnet (109), the sliding sleeve (108) is engaged with the upper gear ring (106) upward, and the electromagnetic When the iron (109) loses power, the sliding sleeve (108) is pushed towards the bottom gear ring (130) by the spring (122) and meshes with the bottom gear ring (130), and the electromagnet (109) is sleeved outside the sliding sleeve (108) It is fixedly connected with the stator (111), the electromagnet (109) is arranged inside the stator (111), and the spring (122) is arranged between the sliding sleeve (108) and the upper casing (110).