CN211532400U

CN211532400U - Impeller type aerator for aquaculture industry

Info

Publication number: CN211532400U
Application number: CN201922358194.3U
Authority: CN
Inventors: 彭娜琳; 王飞; 王佳; 张红瑞
Original assignee: Zhengzhou Yongfeng Biological Fertilizer Industry Co ltd
Current assignee: Zhengzhou Yongfeng Biological Fertilizer Industry Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-22
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses an impeller type aerator for aquaculture industry, which comprises a motor, a gear reduction box, a water surface impeller and three groups of floating ball mechanisms, wherein each floating ball mechanism comprises a connecting rod and a floating ball, an inner cover and an outer cover are installed on the neck of each floating ball, a positioning ring is arranged at the top of the motor, a friction buffering component is arranged on the positioning ring, the friction buffering component comprises a sleeve, a spring and a limiting ring, the positioning ring is sleeved on the sleeve, the two limiting rings are respectively sleeved at the two ends of the sleeve, the spring is sleeved on the sleeve, and the two ends of the spring are respectively contacted with the positioning ring and the limiting ring; the novel plastic bottle cap further comprises a reinforcing structure, wherein the reinforcing structure comprises three reinforcing rods and three cap cylinders, the three reinforcing rods and the three cap cylinders are connected into a triangular ring, and the cap cylinders are respectively covered on the inner cap and the outer cap. The utility model discloses avoided nylon rope wearing and tearing fracture effectively, reduced the external force that the connecting rod bore at work simultaneously, prevented that it from buckling, promoted the steadiness and the stationarity of oxygen-increasing machine self structure.

Description

Impeller type aerator for aquaculture industry

Technical Field

The utility model relates to an aquaculture field, concretely relates to impeller type oxygen-increasing machine for aquaculture industry.

Background

An impeller aerator is a machine which is often applied to fishery aquaculture. The main function of the device is to increase the oxygen content in water to ensure that the fish in the water can not lack oxygen, and simultaneously can inhibit the growth of anaerobic bacteria in the water, thereby preventing the deterioration of pond water from threatening the living environment of the fish. The aerator pumps air into water, so as to achieve the purpose of increasing the oxygen content in the water. In many aquaculture high-yield areas, the function of the aerator and the contribution rate of the yield are the largest, and the aerator is basically arranged in about 5 mu of pond area, even 1-2 mu of pond area.

The structure of the existing impeller type aerator is shown in figure 1, and the aerator mainly comprises a motor 9, a gear reduction box 10, a water surface impeller 11, a floating ball 12 and a floating ball connecting rod 13, wherein a motor waterproof cover is arranged at the top of the motor. The motor outputs rotary power to the water surface impeller through the gear reduction box, and the water surface impeller drives the water surface to fluctuate and splash a large amount of water, so that air is pumped into the water, and the oxygen content in the water is increased. The floater is connected with the motor shell through a floater connecting rod, so that the motor is supported on the water surface. Become the neck on the floater top, the neck top is provided with the inlet opening with the floater inner chamber intercommunication, and the inlet opening is sealed through interior outer cover 16, and the connecting rod is held tightly at the neck of floater through the staple bolt. According to the height of the needed motor 9 on the water surface, liquid is injected into the floating ball through the water inlet hole, or the liquid in the floating ball is discharged through the water inlet hole, so that the buoyancy of the whole device is adjusted, and the aerator is supported on the appropriate position on the ground.

In order to fix the impeller type aerator at a preset position and not move randomly along with the fluctuation of the water surface, a nylon rope is commonly used for fixing the aerator on the water surface. The rope is fixed through the stake, and the holding ring is fixed on the rope through the knot to fix impeller-type oxygen-increasing machine on the surface of water.

In the fixing mode, in order to fix the aerator, the nylon ropes are consistently in a straightening state; the motor can drive the aerator to vibrate when working, the motion amplitude of the aerator can be increased by the water surface stirred by the motor, the nylon rope is continuously pulled towards all directions, the nylon in a straightened state can generate plastic deformation after long-time use, the length of the nylon rope is increased, the positioning ring can move back and forth on the nylon rope and rub against the nylon rope at high speed, and the nylon rope is abraded and even broken; simultaneously, because the motor is in operating condition for a long time, and the impeller rotates and can be undulant with the surface of water, lead to the motor can rock at the arbitrary orientation high frequency in space, and the nylon rope unanimous is in the state of flare-outing, produces very big stress at the knot department of nylon rope, also leads to the nylon rope fracture easily after long-term the use. After the nylon ropes are broken, the impeller type aerator can move on the water surface at will, and when the impeller type aerator moves to the water surface with aquatic weeds, floating materials and the like, the aquatic weeds can be wound on the impeller, so that the aerator cannot work normally; moreover, the operation of re-towing a new nylon rope is very troublesome, and the boat needs to be firstly seated to the aerator, then the nylon rope is bound, and then the two ends of the nylon rope are sent to the opposite shores and are respectively fixed.

Simultaneously, the floater connecting rod cross-section is little, length size is big, and its both ends all are connected with the part that floats in the surface of water, and the oxygen-increasing machine only passes through the nylon rope to fix on the surface of water to need produce a large amount of flowers on the surface of water, its vibration range is big, the frequency is high, leads to the operational environment of connecting rod very harsh, buckles easily, then can't guarantee the motor and be in the central point of three floater and put, has reduced the stationarity of oxygen-increasing machine. And the connecting part between the two ends of the connecting rod and the corresponding part can bear larger stress due to vibration, and the connecting part is easy to break.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a paddle aerator for aquaculture industry has solved current structure that is used for fixing paddle aerator on nylon rope and can lead to the knot not hard up, nylon rope is worn out absolutely, and the connecting rod leads to above-mentioned technical problem such as aerator poor stability with buckling simultaneously. The fixing mechanism designed by the utility model not only reduces the stress borne by the nylon rope by arranging the spring to buffer and damp the impeller type aerator in the extending direction of the nylon rope, but also avoids the nylon rope being worn by the locating ring moving back and forth; simultaneously, through setting up strengthening mechanism, guarantee that the motor is in the central point of floater mechanism and puts, promoted oxygen-increasing machine structural stability, prevent that the connecting rod from buckling, improved its operational environment.

The utility model adopts the technical scheme as follows:

an impeller type aerator for aquaculture industry comprises a floating ball aerator body, wherein the floating ball aerator body comprises a motor, a gear reduction box and a water surface impeller which are sequentially connected in a transmission way, the motor floats on the water surface through three groups of floating ball mechanisms, each floating ball mechanism comprises a connecting rod and a floating ball, two ends of each connecting rod are respectively connected with a motor shell and the neck of each floating ball, inner and outer covers are arranged on the neck of each floating ball, a waterproof cover is arranged at the top of the motor, a positioning ring sleeved on a nylon rope is arranged on each waterproof cover, a friction buffering assembly is arranged between each positioning ring and the nylon rope and comprises a sleeve, a spring and a limiting ring, the sleeve is sleeved on the nylon rope, the positioning rings are sleeved at the middle part of the sleeve, two limiting rings are respectively sleeved at two ends of the sleeve and are in threaded connection with the sleeve, the two springs are sleeved on the sleeve and are respectively positioned on two sides of the positioning ring, and two ends of each spring are respectively contacted with the opposite surfaces of the positioning ring and the limiting ring;

the floating ball mechanism is characterized in that a reinforcing structure is arranged above the floating ball mechanism and comprises reinforcing rods and cover cylinders with closed top ends and open bottom ends, the reinforcing rods and the cover cylinders are arranged in a staggered mode in sequence and are connected into triangular rings in sequence from head to tail, the three reinforcing rods are three sides of a triangle respectively, and the three cover cylinders are located on three corners of the triangle respectively and are covered on an inner cover and an outer cover respectively.

Further, a bearing is installed on an inner hole of the positioning ring, an outer ring of the bearing is in interference fit with the inner wall of the positioning ring, and an inner ring of the bearing is in clearance fit with the sleeve.

Further, a rubber tube is arranged in an inner hole of the sleeve, and the outer wall of the rubber tube is connected with the inner wall of the sleeve.

Furthermore, a plurality of through grooves are formed in the inner wall of the sleeve along the axis of the sleeve, the outer wall of the rubber pipe protrudes outwards in the axial direction to form a plurality of positioning strips, and the positioning strips are inserted into one through groove respectively.

Furthermore, the spring is a cylindrical spiral compression spring, and the tail end of the spring is coated with a layer of hot melt adhesive layer.

Furthermore, the reinforcing rod is a telescopic rod and comprises a tightening bolt, a connecting pipe and an inner rod, wherein the axes of the connecting pipe and the inner rod are overlapped, one end of the inner rod is inserted into an inner hole of the connecting pipe, the rod part of the tightening bolt is in threaded connection with the pipe wall of the connecting pipe, and the tail end of the rod part of the tightening bolt is in contact with the side wall of the inner rod, which is inserted into the connecting pipe; the ends far away from each other of the connecting pipe and the inner rod are respectively connected with a cover cylinder.

Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:

1. the utility model relates to an impeller type oxygen-increasing machine for aquaculture industry, in the extending direction of nylon rope, the holding ring slides along the sleeve outer wall, and extrudes the spring of one side, the spring cushions the shock attenuation to impeller type oxygen-increasing machine in the extending direction of nylon rope, the spring is compressed and deformed at this moment and stores the driving force from the holding ring, then reduce the stress that the knot that lies in the sleeve tip bore, improve the operational environment of nylon rope, improve its life; meanwhile, the positioning ring is not in direct contact with the nylon rope, so that the situation that the positioning ring moves back and forth to abrade the nylon rope is avoided, abrasion and fracture of the nylon rope are effectively avoided, the service life of the nylon rope is further prolonged, unnecessary trouble of installing a new nylon rope in the later period is avoided, and the cost and the frequency of later maintenance of the aerator are reduced;

2. the utility model relates to an impeller type oxygen increasing machine used in aquaculture industry, the designed strengthening structure is a triangle structure, the triangle structure has high stability, the structure is stable, firm and pressure-resistant; the reinforcing structure is arranged on the inner cover and the outer cover through the cover barrel, and the positions of the inner cover and the outer cover are stabilized through the reinforcing rods, so that the external force borne by the connecting rods in the working process is reduced, the bending of the connecting rods is prevented, the stability of the structure of the aerator is improved, the motor is ensured to be stably positioned at the central positions of the three floating balls, and the stability of the aerator is improved; meanwhile, due to the arrangement of the reinforcing structure, the stress borne by the connecting part between the two ends of the connecting rod and the corresponding component is reduced, the working environment of the connecting rod is effectively improved, and the service life of the connecting rod is prolonged; the strengthening mechanism designed by the utility model can be installed on the original oxygen increasing machine by simply covering, and the installation is convenient;

3. the utility model relates to an impeller type oxygen-increasing machine for aquaculture industry, a rubber tube is arranged in a sleeve, and the rubber tube is in interference fit with a nylon rope, thereby improving the synchronism between the sleeve and the nylon rope, preventing the nylon rope from generating relative motion between the sleeve and the nylon rope, and then eliminating the friction loss of the nylon rope and the sleeve after the nylon rope is increased;

4. the utility model relates to an impeller-type oxygen-increasing machine for aquaculture industry, because the connecting rod does not belong to on the oxygen-increasing machine and needs high accuracy complex part, consequently the machining precision is lower than normal, its both ends are connected with motor casing and floater simultaneously, and it is more to connect the position, size difference between the floater mechanism is big more, consequently, can be corresponding with the floater position for the additional strengthening that makes the triangle-shaped structure, cover a section of thick bamboo can the cover in and cover outward, set the telescopic link to the stiffener preferentially, when there is the size difference between the floater mechanism like this, can be through adjusting the length of each stiffener, so that the position of a lid section of thick bamboo and the position of three inside and outside lid always, thereby be convenient for install additional strengthening in floater mechanism, promote the utility model discloses the convenience and the dimensional tolerance nature of assembly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts, and the proportional relationship of each component in the drawings in the present specification does not represent the proportional relationship in the actual material selection design, and is only a schematic diagram of the structure or the position, in which:

FIG. 1 is a schematic structural view of a conventional impeller type aerator;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of a friction cushioning assembly

Fig. 4 is a schematic end view of the present invention;

FIG. 5 is a schematic view of the position of the friction cushioning assembly in engagement with a nylon cord;

FIG. 6 is a front view of the present invention;

FIG. 7 is a schematic structural view of a reinforcing structure;

FIG. 8 is a structural schematic view of the reinforcement structure from below;

fig. 9 is a schematic view of the structure of the cap cylinder.

Reference numerals in the drawings indicate:

1-a positioning ring, 2-a sleeve, 3-a spring, 4-a limiting ring, 5-a bearing, 6-a rubber tube, 7-a positioning strip, 8-a through groove, 9-a motor, 10-a gear reduction box, 11-a water surface impeller, 12-a floating ball, 13-a floating ball connecting rod, 14-a nylon rope, 15-a knot, 16-an inner cover, 17-a reinforcing rod, 18-a cover cylinder, 19-a fastening bolt, 20-a connecting tube and 21-an inner rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

The term "connected" as used herein is intended to mean a conventional connection, such as integrally formed, welded, riveted, etc., if not specifically emphasized, and the specific connection is preferably adapted according to conventional technical knowledge in the art. All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 2 to 9.

Example 1

As shown in fig. 2-9, the impeller type aerator for aquaculture industry of the present invention comprises a floating ball aerator body, wherein the floating ball aerator body comprises a motor 9, a gear reduction box 10 and a water surface impeller 11 which are connected in sequence in a transmission manner, the motor 9 floats on the water surface through three groups of floating ball mechanisms, the floating ball mechanism comprises a connecting rod 13 and a floating ball 12, two ends of the connecting rod 13 are respectively connected with a shell of the motor 9 and a neck of the floating ball 12, an inner cover and an outer cover 16 are installed on the neck of the floating ball 12, a waterproof cover is arranged on the top of the motor 9, a positioning ring 1 which is sleeved on a nylon rope is arranged on the waterproof cover, a friction buffer assembly is arranged between the positioning ring 1 and the nylon rope, the friction buffer assembly comprises a sleeve 2, a spring 3 and a limiting ring 4, the sleeve 2 is sleeved on the nylon rope, the positioning, the two limiting rings 4 are respectively sleeved at two ends of the sleeve 2 and are in threaded connection with the sleeve 2, the two springs 3 are sleeved on the sleeve 2 and are respectively positioned at two sides of the positioning ring 1, and two ends of each spring 3 are respectively contacted with the mutually opposite surfaces of the positioning ring 1 and the limiting ring 4;

the floating ball mechanism is provided with a reinforcing structure above the floating ball mechanism, the reinforcing structure comprises three reinforcing rods 17 and cover cylinders 18 with closed top ends and open bottom ends, the reinforcing rods 17 and the cover cylinders 18 are arranged in a staggered mode in sequence and are connected into a triangular ring in sequence from head to tail, the three reinforcing rods 17 are three sides of a triangle respectively, and the three cover cylinders 18 are located on three corners of the triangle respectively and are covered on an inner cover 16 and an outer cover 16 respectively. Preferably, the cover cylinder 18 is tightly fitted with the inner and outer covers 16, and elastic rubber pads, magnets, etc. may be provided to improve the tight fit.

The utility model discloses the cover is established on the nylon rope, can all set up a knot on the nylon rope and be located sleeve 2's both ends, as shown in fig. 4, perhaps bonds the gum cover on the nylon rope, uses as the knot. Preferably, the reinforcing bar 1 and the cover cylinder 2 are both made of ABS resin.

When the aerator works, the whole aerator shakes on the water surface. In the extending direction of the nylon rope, the positioning ring 1 slides along the outer wall of the sleeve 2 and extrudes the spring 3 on one side, the spring 3 buffers and damps the impeller type aerator in the extending direction of the nylon rope, the spring 3 is compressed and deformed at the moment to store the driving force from the positioning ring 1, the stress borne by the knot at the end part of the sleeve 2 is reduced, the working environment of the nylon rope is improved, and the service life of the nylon rope is prolonged; meanwhile, the positioning ring 1 is not in direct contact with the nylon rope, the situation that the positioning ring moves back and forth to wear the nylon rope is avoided, the nylon rope is effectively prevented from being worn and broken, the service life of the nylon rope is further prolonged, unnecessary trouble of installing a new nylon rope in the later period is avoided, and the later maintenance cost and frequency of the aerator are reduced.

Further, the utility model discloses in, the additional strengthening who designs is the triangle-shaped structure, and the triangle-shaped structure has high stability, and its structure is firm, firm and withstand voltage. The additional strengthening covers 2 through covering and establishes on interior outer cover 14 to stabilize through stiffener 1 each interior outer cover 14's position, reduced the external force that the connecting rod bore in work then, prevent that it from buckling, promoted the steadiness of oxygen-increasing machine self structure, guarantee that the motor is steadily in the central point of three floater and put, promoted the stationarity of oxygen-increasing machine. Meanwhile, due to the arrangement of the reinforcing structure, the stress borne by the connecting parts between the two ends of the connecting rod and the corresponding parts is reduced, the working environment of the connecting rod is effectively improved, and the service life of the connecting rod is prolonged. Moreover, the strengthening mechanism designed by the utility model can be installed on the original oxygen increasing machine simply by covering the strengthening mechanism, and the strengthening mechanism is convenient to install.

Spacing

ring

4 and 2 threaded connection of sleeve to with dismantle it get off the installation or take off holding ring 1, improve the utility model discloses a convenience.

Example 2

The present embodiment is further described with reference to embodiment 1, and the cooperation between the positioning ring 1 and the sleeve 2 is further described.

As shown in fig. 2, in the present invention, a bearing 5 is installed on the inner hole of the positioning ring 1, the outer ring of the bearing 5 is in interference fit with the inner wall of the positioning ring 1, and the inner ring of the bearing is in clearance fit with the sleeve 2. Because the holding ring 1 need be along sleeve 2 round trip movement, and holding ring 1 fixes on the oxygen-increasing machine, and sleeve 2 cover is established on the nylon rope, consequently sets up bearing 5 to improve position complex accuracy between it. Meanwhile, the inner wall of the bearing is smooth, so that the friction force between the positioning ring 1 and the sleeve 2 can be further reduced, and the friction loss between contact surfaces is reduced; meanwhile, the inner wall of the positioning ring 1 does not need to be subjected to finish machining, and the machining cost is reduced.

Example 3

The present embodiment is further described with reference to the above embodiments, wherein the mating surface between the sleeve 2 and the nylon cord is further described.

A rubber tube 6 is arranged in an inner hole of the sleeve 2, and the outer wall of the rubber tube 6 is connected with the inner wall of the sleeve 2.

Although the both ends of sleeve 2 are fixed a position by parts such as knot or gum cover on the nylon rope, and cushion through the spring, the stress at this position of knot has been reduced, use for a long time, it can still increase partly still to be in the nylon rope length of the straight state, this can lead to sleeve 2 to nylon rope round trip movement between two knots, consequently preferably set up rubber tube 6 inside sleeve 2, rubber tube 6 and nylon rope interference fit, thereby improve the synchronism between sleeve 2 and the nylon rope, prevent to produce relative motion between it, then eliminate the friction loss of nylon rope and sleeve 2 after the nylon rope increases.

Further, a plurality of through grooves 8 are formed in the inner wall of the sleeve 2 along the axis of the sleeve, the outer wall of the rubber tube 6 protrudes outwards in the axial direction to form a plurality of positioning strips 7, and the positioning strips 7 are inserted into one through groove 8 respectively.

Rubber tube 6 is preferably fixed at the sleeve 2 inboard through the viscose, and logical groove 8 and location strip 7 set up the viscose face that has increased between sleeve 2 and the rubber tube 6, has promoted its relatively fixed stability. .

Example 4

This embodiment is further described with reference to the above embodiments.

In the present invention, the reinforcing rod 17 is a telescopic rod, as shown in fig. 7 and 8, it includes a tightening bolt 19, and a connecting pipe 20 and an inner rod 21 whose axes coincide with each other, one end of the inner rod 21 is inserted into the inner hole of the connecting pipe 20, the rod part of the tightening bolt 19 is in threaded connection with the pipe wall of the connecting pipe 20, and the end of the rod part contacts with the side wall of the inner rod 21 inserted into the connecting pipe 20;

the ends of the connecting tube 20 and the inner rod 21 remote from each other are each connected to a cover cylinder 18. Preferably, the inner tube 20 and the inner rod 21 are each threaded with a corresponding cap barrel 18, as shown in fig. 9.

Because the connecting rod does not belong to the complex part that needs the high accuracy on the oxygen-increasing machine, consequently, the machining precision is lower on the low side, its both ends are connected with motor casing and floater simultaneously, and the connection position is more, size difference between the floater mechanism is big more, consequently, can be corresponding with the floater position for the additional strengthening of messenger's triangle-shaped structure, cover a section of thick bamboo can overlap and cover in, set the telescopic link to the stiffener 17 preferably, when there is the size difference between the floater mechanism like this, can be through the length of adjusting each stiffener 1, so that the position of a section of thick bamboo and the position of three inside and outside lid always, thereby be convenient for install additional strengthening on floater mechanism, promote the utility model discloses the convenience and the size tolerance nature of assembly.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions conceived by the inventive work within the technical scope disclosed by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides an impeller type oxygen-increasing machine for aquaculture industry, includes floater oxygen-increasing machine body, floater oxygen-increasing machine body is including motor (9), gear reduction box (10) and the surface of water impeller (11) that the transmission connects in proper order, motor (9) float in the surface of water through three floater mechanisms of group, floater mechanism includes connecting rod (13) and floater (12), the both ends of connecting rod (13) are connected with the neck of motor (9) shell and floater (12) respectively, install inside and outside lid (16) on the neck of floater (12), are provided with the buckler at the top of motor (9), are provided with locating ring (1) that the cover was established on the nylon rope on the buckler, its characterized in that: a friction buffering assembly is arranged between the positioning ring (1) and the nylon rope and comprises a sleeve (2), springs (3) and limiting rings (4), the sleeve (2) is sleeved on the nylon rope, the positioning ring (1) is sleeved in the middle of the sleeve (2), two limiting rings (4) are arranged and are respectively sleeved at two ends of the sleeve (2) and are in threaded connection with the sleeve (2), the springs (3) are sleeved on the sleeve (2), the two springs (3) are respectively positioned at two sides of the positioning ring (1), and two ends of each spring (3) are respectively in contact with opposite surfaces of the positioning ring (1) and the limiting ring (4);

be provided with additional strengthening above the floater mechanism, additional strengthening includes stiffener (17) and the open lid section of thick bamboo in top closure, bottom (18), stiffener (17) and lid section of thick bamboo (18) all have threely, and staggered arrangement in proper order to connect into triangular ring end to end in proper order, three stiffener (17) are triangular three limits respectively, and three lid section of thick bamboo (18) are located triangular three angle respectively, and respectively cover and establish on an interior outer cover (16) respectively.

2. The impeller type aerator for aquaculture of claim 1, wherein: install bearing (5) on the hole of holding ring (1), the outer lane of bearing (5) and the inner wall interference fit of holding ring (1), its inner circle and sleeve (2) clearance fit.

3. The impeller type aerator for aquaculture of claim 1, wherein: a rubber tube (6) is arranged in an inner hole of the sleeve (2), and the outer wall of the rubber tube (6) is connected with the inner wall of the sleeve (2).

4. The impeller type aerator for aquaculture of claim 3, wherein: a plurality of through grooves (8) are formed in the inner wall of the sleeve (2) along the axis of the sleeve, the outer wall of the rubber pipe (6) protrudes outwards in the axial direction to form a plurality of positioning strips (7), and the positioning strips (7) are inserted into the through grooves (8) respectively.

5. The impeller type aerator for aquaculture of claim 1, wherein: the reinforcing rod (17) is a telescopic rod and comprises a tightening bolt (19), a connecting pipe (20) and an inner rod (21), wherein the axes of the connecting pipe (20) and the inner rod (21) are overlapped, one end of the inner rod (21) is inserted into an inner hole of the connecting pipe (20), the rod part of the tightening bolt (19) is in threaded connection with the pipe wall of the connecting pipe (20), and the tail end of the rod part of the tightening bolt is in contact with the side wall of the inner rod (21) inserted into the connecting pipe (20);

the ends of the connecting tube (20) and the inner rod (21) which are far away from each other are respectively connected with a cover cylinder (18).