Impeller and impeller type aerator

Abstract

The utility model relates to an impeller of an aerator, which mainly comprises an impeller body, blades and an inner floating body, the inner floating body is a hollow body formed by blow molding, and the hollow body is provided with a vertically through hole; a connecting plate connected with a driving shaft of the aerator is arranged on the inner side of the impeller body, a fish and shrimp escape hole communicated with the through hole of the inner floating body is formed in the connecting plate, a connecting position of a flange of the driving shaft of the aerator is arranged in the middle of the connecting plate, and water pumping blades are arranged on the outer side of the impeller body. The whole machine floats on the water surface to work through the floating body.

Description

TECHNICAL FIELD

[0001] The utility model relates to an aerator, especially relates to a impeller and impeller type aerator, belongs to aquaculture machinery. BACKGROUND

[0002] Aerator is the equipment of lifesaving and helping fish and shrimp in aquaculture. The existing mechanical aerator mainly has waterwheel type aerator and impeller type aerator etc., and the existing impeller type aerator includes mixed flow impeller composed of conical impeller body and blade and axial flow impeller composed of circular impeller body and blade, the connecting plate of impeller body will also have water when the axial flow impeller works, small fish and shrimp will enter and cannot escape, and will be sunned to death after shutdown. SUMMARY

[0003] The utility model discloses a kind of impellers of aerator and aerator with the impeller to overcome the deficiency of prior art, and the utility model discloses the purpose is realized as follows:

[0004] An impeller of aerator mainly includes impeller body, blade, inner float, the inner float is hollow body of blow molding, and there is hole passing through up and down on hollow body;The inner side of the impeller body is provided with the connecting plate connected with the drive shaft of aerator, the fish and shrimp escape hole that is communicated with the through hole of inner float is provided on connecting plate, the connecting position of the flange of aerator drive shaft is provided in the middle of connecting plate, the outer side of impeller body is provided with the blade of water lifting, and the impeller body, blade and connecting plate are integrally injection molded.

[0005] The connecting plate is provided in the middle of circular annular impeller body and is recessed, the connecting position that is connected with the output shaft flange is provided in the middle of connecting plate, the circular annular impeller body is provided with the connecting position connected with inner float, and hollow inner float is fixed in circular annular impeller body by blow molding with screw.

[0006] The position of the connecting plate in the circular annular impeller body is that the size of the upper end of connecting plate is less than the lower end, reinforcing rib can be arranged between the upper surface of connecting plate and circular annular impeller body, and inner float is arranged on the lower surface of connecting plate, the inner float can be matched with circular annular impeller body or inner float is fastened with connecting plate by screw.

[0007] The oxygenator of an oxygen-increasing machine comprises a motor, a reduction gearbox, a floating body and a support rod, the inner end of the support rod is connected to the reduction gearbox, the outer end of the support rod is connected to the floating body, and the whole machine floats on the water surface by the floating body; during operation, the motor drives the impeller to rotate and increase oxygen after being decelerated by the reduction gearbox; the inner side of the upper end of the box of the reduction gearbox is provided with a positioning stop, and the inside of the box is provided with a reduction gear; the reduction gear comprises a driving pinion mounted on the motor shaft to drive a first driven gear, the first driven gear is coaxial with a second driving pinion, the second driving pinion drives a second driven gear, and the second driven gear is mounted on an output shaft; the two ends of the second driving pinion are provided with an upper bearing and a lower bearing; the output shaft of the motor and the reduction gearbox are on the same axis after the motor and the reduction gearbox are assembled; the output shaft is sealed by a mechanical seal or a skeleton oil seal and then extends downward; during operation, the output shaft drives the impeller to rotate.

[0008] The motor comprises a water-cooled motor, the shell of the water-cooled motor is made of stainless steel, the opposite edges of the upper end and the lower end of the stainless steel motor shell of the water-cooled motor become an upper flange and a lower flange, or the opposite edge of the upper end of the stainless steel motor shell of the water-cooled motor becomes an upper flange, and the lower end of the stainless steel motor shell of the water-cooled motor is welded with a lower flange with a thickness greater than that of the motor shell; the upper bearing seat and the lower bearing seat are arranged in the stainless steel motor shell, and the upper bearing seat and the lower bearing seat are connected and fastened by long studs; the upper flange is connected with a sealing top cover; the positioning ring of the lower bearing seat of the water-cooled motor passes through a connecting piece to connect the positioning opening of the reduction gearbox, and the lower flange is sealed and fastened with the reduction gearbox by bolts; a sealing gasket is arranged between the lower bearing seat and the stainless steel motor shell; the sealing gasket and the connecting piece are integrated, the connecting piece is provided with a mounting position and a connecting hole for mounting the support rod, the number of the support rods is not less than three, the inner end of the support rod is connected to the mounting position of the connecting piece, and the outer end of the support rod is connected to the floating body, and the whole machine floats on the water surface for work by the floating body; the floating body comprises a blow-molded hollow body, and each machine is provided with not less than three floating bodies arranged at the outer end of the support rod; the water-cooled motor is cooled by the water splashes raised by the impeller of the oxygen-increasing machine.

[0009] The connecting piece is injection molded, the upper surface of the connecting piece is provided with a hole connected with the lower flange of the motor, the positioning ring of the lower bearing seat of the motor passes through the through hole in the plastic connecting piece and matches the open mouth of the reduction gearbox, and the motor, the plastic connecting piece and the reduction gearbox are sealed and fastened by bolts; or the upper surface of the plastic connecting piece is provided with a connecting position matched with the motor shell, and the lower surface of the plastic connecting piece is provided with a positioning ring matched with the open mouth of the reduction gearbox.

[0010] The injection-molded connecting piece can be provided with a downwardly extending waterproof cover part, which is arranged outside the housing of the reduction gearbox and extends downwardly to prevent water splashed by the impeller or rainwater from splashing on the reduction gearbox to prevent the housing from rusting; or the injection-molded connecting piece is provided with a threaded hole, and after the threaded hole is connected with a waterproof cover screw, the reduction gearbox shell can be more effectively prevented or reduced from rusting.

[0011] The utility model discloses a fish and shrimp escape hole is arranged in the axial flow impeller, and fish and shrimp cannot die in the fish and shrimp escape hole, and the upper and lower through holes arranged in the middle of the inner floating body not only solve the escape channel of small fish and small shrimp into the impeller body, but also find that a large amount of water body rises in the through hole in the test, increase the water-lifting capacity of the axial flow impeller, improve the oxygenation performance of the oxygenation machine, and achieve unexpected technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a three-dimensional schematic view of the impeller of the utility model;

[0013] Figure 2 is Figure 1 is a three-dimensional schematic view of the impeller of the utility model;

[0014] Figure 3 is a three-dimensional schematic view of the impeller of the utility model;

[0015] Figure 4 is a three-dimensional schematic view of the impeller of the utility model;

[0016] Figure 5 is a three-dimensional schematic view of the inner floating body of the utility model;

[0017] Figure 6 is a three-dimensional schematic view of the inner floating body of the utility model;

[0018] Figure 7 is a three-dimensional schematic view of the impeller and the inner floating body of the utility model;

[0019] Figure 8 is a sectional view of the impeller and the inner floating body of the utility model;

[0020] Figure 9 is a three-dimensional schematic view of the housing of the utility model;

[0021] Figure 10 is a three-dimensional schematic view of the stainless steel motor shell of the utility model;

[0022] Figure 11 is a structure schematic view of the water-cooled motor of the utility model;

[0023] Figure 12 is a structure schematic view of the water-cooled motor and the reduction gearbox of the utility model;

[0024] Figure 13 is a three-dimensional schematic view of the water-cooled motor, connecting piece and reduction box of the utility model;

[0025] Figure 14 is a three-dimensional schematic view of the water-cooled motor, connecting piece and reduction box of the utility model;

[0026] Figure 15 is a three-dimensional schematic view of the connecting piece of the utility model;

[0027] Figure 16 is a three-dimensional schematic view of the connecting piece of the utility model;

[0028] Figure 17 is a three-dimensional schematic view of the connecting piece with waterproof cover part of the utility model;

[0029] Figure 18 is a three-dimensional schematic view of the connecting piece with waterproof cover part of the utility model;

[0030] Figure 19 is a schematic view of the impeller type oxygenator of the utility model.

[0031] 1-impeller; 2-impeller body; 3-vane; 4-water passing groove; 5-connecting plate; 6-escape hole; 7-connecting position; 8-connecting hole; 9-screw hole; 10-inner floating body; 11-hole; 12-fixing hole; 13-screw; 14-motor; 16-motor shaft; 17-lower bearing seat; 18-stainless steel motor shell; 19-lower flange; 20-through hole; 21-upper flange; 22-rotor; 23-O-shaped sealing ring; 24-bearing; 25-retaining ring; 26-long stud; 27-stator; 28-bearing; 29-screw; 30-nut; 31-O-shaped sealing ring; 32-nut; 33-wiring box; 34-sealing top cover; 35-outgoing line of motor winding; 36-box body; 37-driving pinion; 38-first driven gear; 39-second driving pinion; 40-second driven gear; 41-bearing; 42-output shaft; 43-mechanical seal; 44-mechanical seal inner cover; 45-mechanical seal outer cover; 46-bolt; 47-sealing element; 48-elastic retaining ring; 49-lower bearing; 50-upper bearing; 51-oil plug; 52-oil plug cover; 53-O-shaped sealing ring; 54-O-shaped sealing ring; 55-connecting piece; 56-lower waterproof cover; 57-self-tapping screw; 58-supporting rod; 59-bolt; 60-nut; 61-screw; 62-mounting position; 63-connecting hole; 64-floating body; 65-flange; 66-fixing ring; 67-upper bearing seat; 68-positioning ring; 69-fixing element; 70-bolt; 71-connecting rib; 72-connecting position; 73-mounting position of O-shaped sealing ring; 74-positioning stop; 75-bearing chamber; 76-waterproof cover part. DETAILED DESCRIPTION

[0032] The utility model will be further described below in conjunction with the drawings with specific embodiments, referring to Figures 1-19 :

[0033] A kind of oxygen-increasing machine's impeller, it mainly includes impeller body 2, blade 3, inner float 10, the inner float 10 is blow molding hollow body, and there is the hole 11 that passes through up and down on hollow body;The inside of the impeller body is provided with the connecting plate 5 connected with the drive shaft of oxygen-increasing machine, and the connecting plate 5 is provided with not less than one fish and shrimp escape hole 6 communicated with the through hole of inner float, the middle part of connecting plate 5 is provided with the connecting site 7 of oxygen-increasing machine drive shaft flange, the outside of impeller body 2 is provided with the blade 3 of pumping water, and the impeller body 2, blade 3, connecting plate 5 are integrally injection molded.The blow molding method of the inner float 10 includes making left cavity and right cavity of mould, and one of left cavity and right cavity is provided with the lower shape of inner float including the core for generating through hole and the core for fixed hole.Heated plastic extruded by extruder enters cavity and blows compressed air, and becomes inner float with fixed hole after cooling and shaping.The inner float 10 can be installed in impeller 1, or in order to increase buoyancy, inner float 10 can protrude outside impeller body 2.The fixed hole 12 of inner float 10 can be connected with impeller by fastener.

[0034] The impeller body 2 can be annular impeller body, and connecting plate 5 is arranged in the middle part and is concave, the middle part of connecting plate 5 is provided with the connecting site 7 connected with output shaft flange 65, and the annular impeller body is provided with the connecting site connected with inner float 10, and hollow inner float is blow molded and is fixed in annular impeller body by screw 13.

[0035] The position of the connecting plate 5 in the annular impeller body is that the axial length of the upper end of connecting plate is less than the lower end (see Figure 4 ), and reinforcing rib can be arranged between the upper surface of connecting plate and annular impeller body, the lower surface of connecting plate 5 is provided with inner float 10, and the inner float 10 can be fitted with annular impeller body or inner float 10 is fastened with connecting plate 5 by screw 13 (see Figure 8). The impeller aerator mainly includes a motor 14, a reduction gear, a float 64 and a support rod 58. The inner end of the support rod 58 is connected to the reduction gear, and the outer end of the support rod is connected to the float 64. The whole machine floats on the water surface by the float 64; when working, the motor 14 drives the impeller to rotate and increase oxygen through the output shaft 42 of the reduction gear; a positioning stop 74 is provided on the inner side of the upper port of the housing 36 of the reduction gear, and a reduction gear is provided in the housing 36. The reduction gear includes a driving pinion 37 installed on the motor shaft 16 to drive a first-level passive gear 38. The first-level passive gear 38 is coaxial with the second-level driving pinion 39. The second-level driving pinion 39 drives the second-level passive gear 40. The second-level driven gear 40 is driven by the second-level driving pinion 39. The driven gear 40 is mounted on the output shaft 42. The shaft ends of the secondary driving pinion 39 are equipped with upper and lower bearings 50 and 49. The upper bearing 50 is disposed in a bearing chamber 75 at the upper end of the housing, and the lower bearing 49 is disposed in a bearing chamber at the bottom of the housing 36. After the motor 14 and the reduction gearbox are assembled, the motor 14 and the reduction gearbox output shaft 42 are coaxial. The output shaft 42 is provided with a driven gear at its upper end. The output shaft 42 is equipped with a bearing 41 and is sealed by a mechanical seal 43 or a skeleton oil seal, extending downward. During operation, the output shaft 42 drives the impeller 1 to rotate. The motor includes a water-cooled motor 14. The housing of the water-cooled motor 14 is made of stainless steel. The opposite ends of the stainless steel motor housing 18 of the water-cooled motor form an upper flange 21 and a lower flange 19. The lower flange can be welded to the motor housing using stainless steel having a thickness greater than that of the motor housing to form a thickened lower flange 19, thereby increasing the strength of the housing of the water-cooled motor 14. An upper bearing seat 67 and a lower bearing seat 17 are set in the stainless steel motor housing 18. The upper bearing seat 67 and the lower bearing seat 17 are fastened with a long stud 26. The flange on the reverse side of the upper end of the stainless steel motor housing 18 is connected to the sealing top cover 34. The sealing top cover 34 is stamped by a stainless steel sheet. An O-ring 31 can be set at the connection between the rounded corners of the reverse side of the stamped part and the rounded corners of the reverse side of the motor housing and the upper bearing seat to prevent seawater from contacting the cast iron upper bearing seat 67. The locating ring 68 of the lower bearing seat of the water-cooled motor 14 passes through a connector 55 and is connected to the inside of the upper port of the gearbox housing 36. The lower flange 19 of the motor housing is sealed and fastened to the gearbox by screws 61. The connector is provided with mounting locations 62 and connection holes 63 for support rods 58. There are at least three support rods 58. The inner ends of the support rods 58 are connected to the mounting locations 62 of the connector and fastened with bolts 59. The outer ends of the support rods 58 are connected to floats 64, which allow the entire machine to float on the water surface during operation. The floats 64 comprise a blow-molded hollow body with a fixing member 69 installed on it. The fixing member 69 is injection-molded and embedded in the blow-molded hollow body. The hollow body can be approximately spherical, cylindrical, or rectangular. The fixing member 69 has grooves that match the support rods. The outer ends of the support rods are installed in the grooves and fastened with bolts. At least three floats are attached to the outer ends of the support rods 58 for each unit.The water-cooled motor 14 cools by the water splashes raised by the impeller 1 of the oxygenator.

[0036] The connecting piece 55 can be injection molded, and the connecting piece is provided with a hole connected with the lower flange 19 of the motor, and the lower end of the motor lower bearing seat 17 is provided with a positioning ring 68 protruding from the motor shell; the positioning ring 68 passes through the through hole in the plastic connecting piece and is matched with the upper end port part of the gearbox body, and the motor, the connecting piece 55 and the gearbox are sealed and fastened by the bolt 59; the sealing and fastening method comprises that the injection molded connecting piece is provided with an O-shaped sealing ring mounting position 73 on the upper and lower surfaces, and the lower flange of the motor shell is sealed and fastened together with the connecting piece and the gearbox under the action of the bolt after the O-shaped sealing ring is mounted. Or the plastic connecting piece is provided with a connecting position 72 matched with the motor shell on the upper surface, and the plastic connecting piece is provided with a positioning ring matched with the upper end port part of the gearbox on the lower surface.

[0037] The injection molded connecting piece 55 can be provided with a downwardly extending waterproof cover part 76, and the waterproof cover part 76 is provided on the outside of the gearbox body and extends downwardly to prevent the water splashes raised by the impeller or rainwater from splashing on the gearbox and prevent the gearbox body from rusting; or the injection molded connecting piece 55 is provided with a threaded hole and is sealed by screwing with the lower waterproof cover 56, which can more effectively prevent or reduce the rusting of the gearbox shell; after the motor and the gearbox are sealed and connected, seawater cannot contact the iron cast bearing seat and the gearbox, thereby preventing rusting. It should be noted that the features of the embodiments of the present application can be combined with each other without conflict. In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "fixedly connecting" should be understood in a broad sense, which can be fixedly connected, can be detachably connected, can be directly connected or indirectly connected.

[0038] The above embodiments are only one of the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An impeller, mainly comprising an impeller body, blades, and an inner float, and its characteristics include: The inner float is a hollow body formed by blow molding, and there are holes running through it from top to bottom. The inner side of the impeller body is provided with a connecting plate connected to the drive shaft of the aerator, and the connecting plate is provided with a fish and shrimp escape hole communicating with the through hole of the inner float. The middle part of the connecting plate is provided with a connection position for the aerator drive shaft flange, and the outer side of the impeller body is provided with water-lifting blades. The impeller body, blades and connecting plate are integrally injection molded.

2. An impeller as described in claim 1, characterized in that the impeller body is a circular impeller body with a connecting plate with a concave middle portion, a connecting position connected to the output shaft flange is provided in the middle of the connecting plate, a connecting position connected to the inner float is provided in the circular impeller body, and the hollow inner float is blow-molded and fixed in the circular impeller body with screws.

3. An impeller as described in claim 1, characterized in that the connecting plate is arranged in a position inside the annular impeller body so that the size of the upper end of the connecting plate is smaller than that of the lower end, reinforcing ribs can be provided between the upper side of the connecting plate and the annular impeller body, and an inner float is provided below the connecting plate, and the inner float can be matched with the annular impeller body or the inner float and the connecting plate can be fastened with screws.

4. An impeller-type aerator with an impeller as claimed in claim 1, 2 or 3, comprising a motor, a reduction gearbox, a float and a support rod, wherein the impeller aerator is characterized by: The inner end of the support rod is connected to the reduction gear box, and the outer end of the support rod is connected to the float, and the whole machine floats on the water surface by the float; when working, the motor drives the impeller to rotate and increase oxygen after being decelerated by the reduction gear box; a positioning stop is provided on the inner side of the upper port portion of the reduction gear box, and a reduction gear is provided in the box body, and the reduction gear includes a driving pinion mounted on the motor shaft to drive a first-stage passive gear, the first-stage passive gear is coaxial with the second-stage driving pinion, the second-stage driving pinion drives the second-stage passive gear, and the second-stage passive gear is mounted on the output shaft, and upper bearings and lower bearings are provided at both ends of the shaft of the second-stage driving pinion, the upper bearing is arranged in the bearing chamber of the upper port portion of the box body, and the lower bearing is mounted in the bearing chamber at the bottom of the box body; after the motor and the reduction gear box are assembled, the output shafts of the motor and the reduction gear box are on the same axis, and the output shaft is sealed by a mechanical seal or a skeleton oil seal and then extends downward. When working, the output shaft drives the impeller to rotate.

5. The impeller aerator according to claim 4, characterized in that: The motor includes a water-cooled motor, the housing of the water-cooled motor is made of stainless steel, the upper end and the lower end of the stainless steel motor housing of the water-cooled motor are reversed to form an upper flange and a lower flange, or the upper end of the stainless steel motor housing of the water-cooled motor is reversed to form an upper flange, and the welding thickness of the lower end of the stainless steel motor housing of the water-cooled motor is greater than the lower flange of the motor housing; an upper bearing seat and a lower bearing seat are arranged in the stainless steel motor housing, and the upper bearing seat and the lower bearing seat are fastened with long studs, and the upper flange is connected to the sealing top cover; the positioning ring of the lower bearing seat of the water-cooled motor is connected to the reducer through the connecting piece The positioning port and the lower flange are sealed and fastened to the reduction gearbox by bolts; a sealing gasket is arranged between the lower bearing seat and the stainless steel motor housing; the sealing gasket and the connecting piece are arranged as a whole, and the connecting piece is provided with a mounting position and a connecting hole for installing the support rod. There are no less than three support rods, the inner end of the support rod is connected to the mounting position of the connecting piece, and the outer end is connected to the float, and the whole machine floats on the water surface to work by the float; the float includes a blow-molded hollow body, and each unit has no less than three floats respectively arranged at the outer end of the support rod; the water-cooled motor is cooled by the water splash raised when the impeller of the aerator is working.

6. The impeller aerator according to claim 4, characterized in that: The impeller-type aerator is provided with a connecting piece, which is injection molded. A hole connected to the lower flange of the motor is provided on the connecting piece. The positioning ring of the lower bearing seat of the motor passes through the through hole in the plastic connecting piece and matches the opening of the reduction gear box. Bolts are used to seal and fasten the motor, plastic connecting piece, and reduction gear box; or a connecting position matching the motor housing is provided on the plastic connecting piece, and a positioning ring matching the opening of the reduction gear box is provided under the plastic connecting piece.

7. The impeller aerator according to claim 6, characterized in that: The injection-molded connector can be provided with a waterproof cover extending downward. The waterproof cover is provided on the outside of the reduction gear box body and extends downward to prevent the splashes of water or rain raised by the impeller from falling on the reduction gear box body and preventing the box body from rusting; or the injection-molded connector is provided with screw holes and connected to the lower waterproof cover with screws, which can more effectively prevent or reduce the rust of the reduction gear box housing.

Images