CN219939382U - Impeller aerator - Google Patents

Abstract

The utility model discloses an impeller aerator, which comprises an impeller, an outer rotor motor, a flange plate and a pontoon; the central shaft is axially provided with a first assembly section, a second assembly section and a third assembly section, wherein the flange plate is fixedly arranged on the first assembly section, the outer rotor motor is rotatably arranged on the third assembly section, and the second assembly section is fixedly provided with a sealing assembly; the first assembly section is provided with two parallel cutting flat walls, the center of the flange plate is provided with an assembly plate with a central hole, an assembly sleeve is fixedly arranged in the central hole, and the assembly sleeve is provided with an embedding hole which is embedded with the first assembly section; the assembly group also comprises two parallel plane outer wall flange plates, wherein the center hole is provided with two second plane hole walls, and the plane outer wall and the second plane hole walls are provided with mutually matched circumferential limit structures; the impeller is of an integrated structure and is fixedly connected with the outer rotor motor. The impeller type aerator disclosed by the utility model is simple to process and assemble, high in assembly precision and stable and efficient in operation.

Description

Impeller aerator

Technical Field

The utility model belongs to the technical field of oxygen-increasing machines, and particularly relates to an impeller-type oxygen-increasing machine.

Background

The impeller aerator realizes the oxygen supply requirement of a large-area pond by driving the impeller to rotate and poking water, and mainly comprises a pontoon, a driving motor, the impeller and a flange plate, wherein the pontoon is connected with the flange plate through a connecting rod, the impeller is assembled on the driving motor, the driving motor adopts an outer rotor motor, and the flange plate is fixedly arranged on the central shaft by taking the central shaft as a rotation center. The traditional impeller adopts a split structure, is complex to assemble, and has poor stability and easy damage in the high-speed running process; in order to improve the operation stability of the aerator, the connection stability of the flange plate and the central shaft is important, so that relative rotation of the flange plate and the central shaft is avoided, in the prior art, a spline is arranged between the flange plate and the central shaft, machining and assembling are complex, and assembling precision cannot be guaranteed.

Disclosure of Invention

The utility model provides an impeller type aerator aiming at the problems that in the prior art, the impeller type aerator is complex to process and assemble and the assembly precision cannot be guaranteed. The utility model aims at realizing the following technical scheme:

an impeller aerator comprises an impeller, an outer rotor motor, a flange plate and a pontoon, wherein the outer rotor motor and the flange plate are assembled on a central shaft; the central shaft is axially provided with a first assembly section, a second assembly section and a third assembly section, wherein the flange plate is fixedly arranged on the first assembly section, the outer rotor motor is rotatably arranged on the third assembly section, and the second assembly section is fixedly provided with a sealing assembly; the first assembly section is provided with two parallel cutting flat walls, the center of the flange plate is provided with an assembly plate with a central hole, an assembly sleeve is fixedly arranged in the central hole, the assembly sleeve is provided with an embedded hole which is embedded with the first assembly section, and the embedded hole is provided with two first plane hole walls which are attached to the cutting flat walls; the assembly sleeve further comprises two plane outer walls which are parallel to each other, the central hole of the flange plate is provided with two second plane hole walls which are attached to the plane outer walls, and the plane outer walls and the second plane hole walls are provided with circumferential limiting structures which are matched with each other; the pontoon is provided with a plurality of pontoons and is fixedly connected with the flange plate through connecting rods, and the impeller is of an integrated structure and is fixedly connected with the outer rotor motor.

Preferably, the circumferential limiting structure comprises a limiting strip protruding on the outer wall of the plane and a strip-shaped groove concavely arranged on the wall of the second plane.

Preferably, the upper end wall of the assembly sleeve is provided with an outward expansion abutting edge, and the initial end of the limiting strip abuts against the lower wall of the outward expansion abutting edge; the upper end wall of the assembly disc is provided with an outward expansion groove for embedding the outward expansion abutting edge, and the strip-shaped groove is communicated with the outward expansion groove.

Preferably, the outer rotor motor comprises an upper end cover and a lower end cover, the upper end cover and the lower end cover are mutually buckled to define an assembly cavity for assembling a motor stator, the motor stator is fixedly sleeved on the middle section of the third assembly section, the upper end cover is rotationally assembled on the upper section of the third assembly section through a first bearing, the lower end cover is rotationally assembled on the lower section of the third assembly section through a second bearing, and the impeller is fixedly arranged on the lower end cover.

Preferably, the upper end of the flange plate is buckled with a housing, and an electric control assembly is arranged in the housing; the central shaft is internally provided with an axial perforation for penetrating the wire rod, the axial perforation penetrates through the first assembly section and the second assembly section of the central shaft and extends to a third assembly section, and the third assembly section is provided with a radial perforation communicated with the axial perforation.

Preferably, the impeller comprises an axle and a peripheral wall surrounding the axle, and the peripheral wall and the axle side wall define a cavity with an upward opening; the peripheral wall is provided with a plurality of outwardly extending water-repellent blades which are uniformly distributed along the circumferential direction of the wheel shaft and divide the peripheral wall into a plurality of connecting parts; each connecting part comprises a connecting piece, and the water-drawing blades are connected with the connecting pieces at an obtuse angle; the engagement piece gradually approaches the wheel axle in the rotation direction of the wheel axle; the outer wall surface of the connecting piece gradually inwards receives the connecting piece from bottom to top in the axial direction of the wheel shaft; the inner wall surface of the connecting piece gradually expands outwards from bottom to top in the axial direction of the wheel shaft, and the connecting piece is of a lamellar structure which is gradually thinned from bottom to top.

Preferably, the connecting parts further comprise force transmission sheets and angle folding sheets, the connecting sheets, the angle folding sheets and the force transmission sheets are sequentially arranged in the rotation direction of the wheel shaft, and each connecting part and the water poking sheets at two sides of the connecting parts define a flow passage with wide upper part and narrow lower part; the force transmission piece and the connecting piece are of curved wall structures, the corner piece is of straight wall structures, the connecting piece and the corner piece are connected in an angle mode, and the corner piece and the force transmission piece are connected in an angle mode.

Preferably, the water-stirring blade comprises a blade body, wherein the inner edge of the blade body is connected to the outer wall of the peripheral wall, the upper edge of the blade body is provided with an upward turning edge, the lower edge of the blade body is provided with a downward turning edge, the outer edge of the blade body is provided with an outward turning edge, and the upward turning edge, the downward turning edge and the outward turning edge are all turned over towards the water stirring direction of the water-stirring blade.

Preferably, the joint positions of two adjacent connecting parts form ridge ribs, the ridge ribs are formed by the boundary line between the joint sheet and the force transmission sheet, and the joint sheet and the force transmission sheet belong to two adjacent connecting parts respectively; each water-repellent blade corresponds to one ridge, and the inner edge of the blade body is attached to the corresponding ridge and extends along the trend of the ridge.

Preferably, a plurality of drag reduction holes are formed in the blade body at intervals, and the drag reduction holes are obliquely arranged towards the everting edge in the thickness direction of the blade body; the upper edge of the upturning edge is provided with a plurality of water beating grooves at intervals along the length direction of the upturning edge, and the water beating grooves are notch grooves.

Compared with the prior art, the utility model has the following technical effects: the central shaft is arranged in a segmented mode, and is matched with the flange plate and the outer rotor motor through different outer diameters and outer contours, so that the assembly is convenient and compact, and the assembly precision is high; the fixed assembly of the central shaft and the flange plate is realized by arranging the assembly sleeve, the assembly is convenient and quick, the relative freedom degree of the central shaft and the flange plate can be limited from multiple directions, the assembly stability is high, and the operation is stable; the impeller adopts an integrated structure, so that the assembly is convenient and the operation is stable; the connecting piece is used as the outer wall of the main body of the deep cavity structure, and the structure of the connecting piece is optimized to enable the connecting piece to be thinner at a position close to the cavity opening, so that the demolding resistance is reduced, and the demolding is more convenient; each connecting part is formed by connecting three sheets positioned at different angles, so that the structural strength of the whole impeller can be effectively improved, and the water-drawing effect can be improved; the water-stirring blade structure is reasonable in arrangement, water stirring quantity and oxygenation efficiency can be effectively improved through the cooperation of a plurality of turnups, the setting of drag reduction holes and water stirring grooves can reduce the water stirring resistance of the water stirring blade, water flow is scattered, and oxygenation efficiency is further improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the assembled structure of the central shaft in the present utility model;

FIG. 3 is a schematic view of the central shaft structure of the present utility model;

FIG. 4 is a schematic diagram of the assembly kit structure of the present utility model;

FIG. 5 is a schematic view of a flange structure according to the present utility model;

FIG. 6 is a schematic view of a impeller structure according to the present utility model;

FIG. 7 is a top view of a impeller according to the present utility model;

the marks in the figure: a central shaft 10; a first assembly section 11; cutting the flat wall 111; a second mounting section 12; a third assembly section 13; a threaded section 14; an axial perforation 15; a radial perforation 16; assembling a sleeve 20; a first planar aperture wall 21; a planar outer wall 22; a limit bar 221; a flaring abutment edge 23; an invagination groove 24; a flange 30; a second planar aperture wall 31; a bar-shaped groove 311; an expansion tank 32; a housing 33; a connecting rod 34; buoy 35; a seal assembly 40; a nut 50; an upper end cap 71; a sleeve 711; a lower end cap 72; a motor stator 73; a first bearing 74; a second bearing 75; an axle 60; a side wall 61; assembling the top wall 62; a reinforcing rib 63; a connection portion 80; a connecting piece 81; corner flaps 82; a force transmitting piece 83; ridge ribs 84; a water deflector blade 90; a blade body 91; drag reducing hole 911; an upturned edge 92; a water tank 921; a downward turning edge 93; valgus edge 94.

Detailed Description

The utility model is further described below with reference to embodiments shown in the drawings in which:

referring to fig. 1-5, the embodiment discloses an impeller aerator, which comprises an impeller, an outer rotor motor, a flange 30 and a pontoon 35, wherein the outer rotor motor and the flange 30 are all assembled on a central shaft 10; the central shaft 10 is axially provided with a first assembly section 11, a second assembly section 12 and a third assembly section 13, wherein a flange plate 30 is fixedly arranged on the first assembly section 11, an outer rotor motor is rotatably arranged on the third assembly section 13, and a sealing assembly 40 is fixedly arranged on the second assembly section 12.

The first assembly section 11 is provided with two parallel cutting flat walls, the center of the flange 30 is provided with an assembly disc with a central hole, an assembly sleeve 20 is fixedly arranged in the central hole, the assembly sleeve 20 is provided with an embedded hole which is embedded with the first assembly section 11, and the embedded hole is provided with two first plane hole walls 21 which are attached to the cutting flat walls; the assembly sleeve 20 further comprises two parallel plane outer walls 22, the central hole of the flange 30 has two second plane hole walls 31 attached to the plane outer walls 22, the plane outer walls 22 and the second plane hole walls 31 are provided with mutually matched circumferential limit structures, in this embodiment, the circumferential limit structures comprise limit strips 221 protruding on the plane outer walls 22, and strip-shaped grooves 311 concavely arranged on the second plane hole walls 31, and in order to improve the limit effect, the longitudinal sections of the limit strips 221 and the strip-shaped grooves 311 are rectangular; in order to improve the assembly precision of the assembly sleeve 20 and limit the relative freedom degree of the assembly sleeve and the flange 30 in the axial direction, the upper end wall of the assembly sleeve 20 is provided with an outward expansion abutting edge 23, and the starting end of the limiting strip 221 is abutted to the lower wall of the outward expansion abutting edge 23; the upper end wall of the assembly disc is provided with an outward expansion groove 32 for embedding the outward expansion abutting edge 23, and the strip-shaped groove 311 is communicated with the outward expansion groove 32.

The upper end of the first assembling section 11 is also provided with a thread section 14, the thread section 14 comprises two parallel flat walls and two opposite arc walls, the threads are arranged on the arc walls, the thread section 14 is screwed with a nut 50, the thread section 14 is provided with alternate flat walls and arc walls, and compared with a cylindrical structure, the nut 50 screwed on the thread section 14 is not easy to slide and is more stable; the upper end wall of the assembly sleeve 20 is flush with the upper end wall of the assembly disc, and the lower wall of the nut 50 is abutted to the upper end wall of the assembly sleeve 20 and the upper end wall of the assembly sheet; a step edge is arranged between the first assembly section 11 and the second assembly section 12, a gasket is sleeved at the tail end of the first assembly section 11, the lower end face of the gasket is abutted to the step edge, and the lower end wall of the assembly sleeve 20 and the lower end wall of the assembly disc are both abutted to the upper end face of the gasket. The nut 50, the abutment edge and the two gaskets cooperate with each other to limit the relative freedom of the central shaft 10 and the flange 30 in the axial direction.

The upper end of the flange plate 30 is buckled with a housing 33, an electric control component is assembled in the housing 33, and for protecting the electric control component, the upper end wall and the lower end wall of the assembly sleeve 20 are respectively provided with an inward groove 24 for embedding a sealing ring, and the inward groove 24 is arranged around the periphery of the embedding hole.

The pontoons 35 are provided with three pontoons, which are fixedly connected with the circumference of the flange plate 30 through connecting rods 34, and the three connecting rods 34 are uniformly arranged at intervals along the circumference of the flange plate 30.

The outer rotor motor comprises an upper end cover 71 and a lower end cover 72, wherein the upper end cover 71 and the lower end cover 72 are mutually buckled to define an assembly cavity for assembling a motor stator 73, the motor stator 73 is fixedly sleeved on the middle section of the third assembly section 13, the upper end cover 71 is rotatably assembled on the upper section of the third assembly section 13 through a first bearing 74, and the lower end cover 72 is rotatably assembled on the lower section of the third assembly section 13 through a second bearing 75.

The center of the upper end cap 71 is provided with a shaft sleeve 711 extending toward the flange 30, an assembly space for accommodating the sealing assembly 40 is formed between the shaft sleeve 711 and the second assembly section 12, and the sealing assembly 40 includes a mechanical sealing unit and a skeleton sealing unit, and the mechanical sealing unit is separated from the skeleton sealing unit by a spacer.

The central shaft 10 is internally provided with an axial perforation 15 for penetrating wires, the axial perforation 15 penetrates through the first assembly section 11 and the second assembly section 12 of the central shaft 10 and extends to the third assembly section 13, the third assembly section 13 is provided with a radial perforation 16 communicated with the axial perforation 15, one end of each wire is connected with an electric control assembly in the housing 33, and the other end of each wire penetrates through the axial perforation 15 of the central shaft 10 and penetrates out of the radial perforation 16 to be connected with the motor stator 73 of the outer motor.

Referring to fig. 6 and 7, an impeller is fixedly assembled on the lower end surface of the lower end cover 72, the impeller is in an integrated structure, and comprises an axle 60 and a peripheral wall surrounding the axle 60, the peripheral wall and the side wall of the axle 60 define a cavity with an upward opening, and an assembly top wall 62 is arranged on the top of the axle 60; five outwardly extending water-repellent blades 90 are formed on the peripheral wall, and the five water-repellent blades 90 are uniformly distributed along the circumferential direction of the wheel axle 60.

The five water-pulling blades 90 divide the peripheral wall into five connection portions 80; each connecting part 80 comprises a connecting piece 81, and the water-poking blades 90 are connected with the connecting pieces 81 at an obtuse angle; the engaging piece 81 gradually approaches the axle 60 in the rotation direction of the axle 60, the outer wall surface of the engaging piece 81 gradually inwards expands from bottom to top, the engaging piece 81 is of a lamellar structure which is gradually thinned from bottom to top, the inwards expanding angle of the outer wall surface of the engaging piece 81 and the outwards expanding angle of the inner wall surface are approximately 1 degree, and the engaging piece 81 is used as the outer wall of the main body of the deep cavity structure, is thinner at a position close to the cavity opening, and reduces demoulding resistance.

The connecting parts 80 further comprise force transmission pieces 83 and angle folding pieces 82, the connecting pieces 81, the angle folding pieces 82 and the force transmission pieces 83 are sequentially arranged in the rotation direction of the wheel axle 60, and each connecting part 80 and the water stirring blades 90 at two sides of the connecting part define a flow passage with wide upper part and narrow lower part so as to improve the water stirring efficiency; the force transfer sheet 83 and the connecting sheet 81 are both in a curved wall structure, the corner folding sheet 82 is in a straight wall structure, the connecting sheet 81 and the corner folding sheet 82 are connected in an angle, and the corner folding sheet 82 and the force transfer sheet 83 are connected in an angle, so that the torque of the rotating shaft is more effectively transferred to the water stirring blade 90; the joint positions of the adjacent two connecting portions 80 form a ridge 84, the ridge 84 is formed by the boundary line between the joint piece 81 and the force transmission piece 83, and the joint piece 81 and the force transmission piece 83 respectively belong to the two adjacent connecting portions 80.

The water stirring blades 90 comprise blade main bodies 91, the inner edges of the blade main bodies 91 are connected to the outer wall of the peripheral wall, the upper edges of the blade main bodies 91 are provided with upper turning edges 92, the lower edges of the blade main bodies 91 are provided with lower turning edges 93, the outer edges of the blade main bodies 91 are provided with outer turning edges 94, the upper turning edges 92, the lower turning edges 93 and the outer turning edges 94 are turned over towards the water stirring direction of the water stirring blades 90, and the water stirring quantity can be improved due to the arrangement of a plurality of turning edges so as to improve the oxygenation efficiency; each of the water-repellent blades 90 corresponds to one ridge 84, and the inner edge of the blade body 91 is attached to the corresponding ridge 84 and extends in the direction of the ridge 84, so that the torque of the rotating shaft is more efficiently transmitted to the blade.

In order to reduce the water-drawing resistance of the water-drawing blades 90 and improve the oxygenation efficiency, three rows of drag reduction holes 911 are arranged on the blade main body 91 at intervals, the drag reduction holes 911 are obliquely arranged towards the outward turning edge 94 in the thickness direction of the blade main body 91, and the oblique arrangement is more compliant to the water flow direction so as to reduce the resistance and facilitate demoulding when the impeller is formed; the upper edge of the upturning edge 92 is provided with a plurality of water beating grooves 921 at intervals along the length direction of the upturning edge, the water beating grooves 921 are notch grooves, the water beating grooves 921 can further reduce the water stirring resistance of the water stirring blade 90, and the notch grooves are easy to demould during molding.

In order to improve the structural strength of the impeller, a reinforcing rib 63 is arranged between the outer wall of the side wall of the rotating shaft and the inner wall of the force transmission piece 83, and the reinforcing rib 63 comprises an extension section which extends outwards from the outer wall of the side wall and an upper extension section which extends upwards along the inner wall of the force transmission piece 83.

It should be understood that in the claims, the specification of the present utility model, all "including … …" should be interpreted as open-ended meaning that it is equivalent to "at least … …", and not as closed-ended meaning that it should not be interpreted to "include … …" only. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and those skilled in the art should appreciate variations, modifications, additions or substitutions within the spirit of the present utility model.

Claims (10)

1. The impeller aerator comprises an impeller, an outer rotor motor, a flange plate and a pontoon, wherein the outer rotor motor and the flange plate are assembled on a central shaft, and the impeller aerator is characterized in that the central shaft is axially provided with a first assembly section, a second assembly section and a third assembly section, the flange plate is fixedly arranged on the first assembly section, the outer rotor motor is rotatably arranged on the third assembly section, and a sealing assembly is fixedly arranged on the second assembly section; the first assembly section is provided with two parallel cutting flat walls, the center of the flange plate is provided with an assembly plate with a central hole, an assembly sleeve is fixedly arranged in the central hole, the assembly sleeve is provided with an embedded hole which is embedded with the first assembly section, and the embedded hole is provided with two first plane hole walls which are attached to the cutting flat walls; the assembly sleeve further comprises two plane outer walls which are parallel to each other, the central hole of the flange plate is provided with two second plane hole walls which are attached to the plane outer walls, and the plane outer walls and the second plane hole walls are provided with circumferential limiting structures which are matched with each other; the pontoons are provided with a plurality of pontoons and are fixedly connected with the flange plate through connecting rods; the impeller is of an integrated structure and is fixedly connected with the outer rotor motor.

2. The impeller aerator of claim 1, wherein the circumferential spacing structure comprises a spacing strip protruding from the outer planar wall and a strip-shaped slot recessed from the wall of the second planar wall.

3. The impeller aerator of claim 2, wherein the upper end wall of the assembly sleeve is provided with an outward expansion abutment edge, and the starting end of the limit bar is abutted to the lower wall of the outward expansion abutment edge; the upper end wall of the assembly disc is provided with an outward expansion groove for embedding the outward expansion abutting edge, and the strip-shaped groove is communicated with the outward expansion groove.

4. The impeller-type aerator according to claim 1, wherein the outer rotor motor comprises an upper end cover and a lower end cover, the upper end cover and the lower end cover are mutually buckled to define an assembly cavity for assembling a motor stator, the motor stator is fixedly sleeved on the middle section of the third assembly section, the upper end cover is rotatably assembled on the upper section of the third assembly section through a first bearing, the lower end cover is rotatably assembled on the lower section of the third assembly section through a second bearing, and the impeller is fixedly arranged on the lower end cover.

5. The impeller aerator of claim 4, wherein the upper end of the flange is fastened with a housing, and the housing is provided with an electrical control assembly; the central shaft is internally provided with an axial perforation for penetrating the wire rod, the axial perforation penetrates through the first assembly section and the second assembly section of the central shaft and extends to a third assembly section, and the third assembly section is provided with a radial perforation communicated with the axial perforation.

6. The impeller aerator of any one of claims 1-5, wherein the impeller includes an axle and a peripheral wall surrounding the axle, the peripheral wall and the axle wall defining an upwardly open cavity; the peripheral wall is provided with a plurality of outwardly extending water-repellent blades which are uniformly distributed along the circumferential direction of the wheel shaft and divide the peripheral wall into a plurality of connecting parts; each connecting part comprises a connecting piece, and the water-drawing blades are connected with the connecting pieces at an obtuse angle; the engagement piece gradually approaches the wheel axle in the rotation direction of the wheel axle; the outer wall surface of the connecting piece gradually inwards receives the connecting piece from bottom to top in the axial direction of the wheel shaft; the inner wall surface of the connecting piece gradually expands outwards from bottom to top in the axial direction of the wheel shaft, and the connecting piece is of a lamellar structure which is gradually thinned from bottom to top.

7. The impeller aerator of claim 6, wherein the connecting parts further comprise force transmission pieces and angle folding pieces, the connecting pieces, the angle folding pieces and the force transmission pieces are arranged in sequence in the rotation direction of the wheel shaft, and each connecting part and the water poking blades at two sides of the connecting parts define a flow passage with wide upper part and narrow lower part; the force transmission piece and the connecting piece are of curved wall structures, the corner piece is of straight wall structures, the connecting piece and the corner piece are connected in an angle mode, and the corner piece and the force transmission piece are connected in an angle mode.

8. The impeller-type aerator according to claim 7, wherein the water-stirring blade comprises a blade body, an inner edge of the blade body is connected to an outer wall of the peripheral wall, an upper edge of the blade body is formed with an upward-turning edge, a lower edge of the blade body is formed with a downward-turning edge, and an outward-turning edge is arranged on an outer edge of the blade body, and the upward-turning edge, the downward-turning edge and the outward-turning edge are all turned in a water-stirring direction of the water-stirring blade.

9. The impeller aerator according to claim 8, wherein the joint positions of two adjacent connecting portions form ridge ribs, the ridge ribs are formed by the boundary line between the joint piece and the force transmission piece, and the joint piece and the force transmission piece belong to two adjacent connecting portions; each water-repellent blade corresponds to one ridge, and the inner edge of the blade body is attached to the corresponding ridge and extends along the trend of the ridge.

10. The impeller aerator of claim 9, wherein the blade body is provided with a plurality of drag reducing holes at intervals, and the drag reducing holes are obliquely arranged towards the outward turning edge in the thickness direction of the blade body; the upper edge of the upturning edge is provided with a plurality of water beating grooves at intervals along the length direction of the upturning edge, and the water beating grooves are notch grooves.