High-efficiency waterwheel type aerator and tooth-shaped impeller equipped with high-efficiency waterwheel type aerator

Abstract

The utility model discloses a high-efficiency waterwheel type aerator and a tooth-shaped impeller equipped with the aerator. The tooth-shaped impeller comprises an impeller body and a group of blades arranged on the peripheral wall of the impeller body; a shaft hole for an impeller shaft to penetrate through is formed in the middle of the wheel body; each blade comprises a blade main body and a flow guide flange arranged at the outer edge of the blade main body; the flow guide turnup is turned towards the water stirring direction of the blade; a group of drainage holes are formed in the blade main body at intervals; and a group of flow guide grooves are formed in the flow guide turned-over edge at intervals. According to the tooth-shaped impeller, the flow guide turnups folded towards the water stirring direction of the blades are arranged on the edges of the blades, so that water flow can be guided, the water stirring amount is increased, the water stirring resistance is reduced, and the energy consumption of the aerator is reduced; meanwhile, the drainage holes are formed in the blade main body, and the flow guide grooves are formed in the flow guide turnup edge, so that the flowability of water is improved, water flow stirred by the blade can be divided, the direction of water spray can be changed, the water spray can be scattered all around and is in full contact with air, and the oxygenation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerators, in particular to a high-efficiency waterwheel-type aerator and a toothed impeller equipped therewith. Background Art

[0002] As an important equipment in aquaculture, aerators are mainly used to increase the dissolved oxygen content of aquaculture water to prevent the aquaculture water from being hypoxic. At the same time, they can also inhibit the growth of anaerobic bacteria in the water to prevent the aquaculture water from deteriorating and threatening the living environment of fish and shrimp. Among them, the waterwheel aerator mainly includes a floating boat, a bracket, a power device, an impeller, etc. When working, the impeller is driven to rotate by the power device; the impeller blades are partially or completely immersed in the water. During the rotation process, the blades hit the water surface at high speed, stirring up water splashes, dissolving a large amount of air to form dissolved oxygen, and bringing it into the water, while generating a strong force, on the one hand, pressing the surface water into the bottom of the pool, and on the other hand, pushing the water to make the water flow and quickly diffuse the dissolved oxygen.

[0003] As an important part of a waterwheel aerator, the impeller is usually composed of a wheel seat and blades. For example, Chinese patent CN201721386765.9 discloses a waterwheel aerator impeller, including an impeller seat and blades. Several groups of connecting seats are arranged on the outer edge of the rim of the impeller seat, and the groups of connecting seats are staggered with each other. Only each group of connecting seats is composed of several connecting seats, and the connecting seats of each group are symmetrically distributed about the central axis hole of the impeller seat; blades are arranged on each connecting seat. However, the impeller of this structure is split, and the assembly is more complicated. If there is a certain error during installation, it will also affect the overall stability of the impeller, causing it to be damaged during high-speed operation; in addition, the blades of the impeller are solid structures, which make a lot of noise when stirring the water, and will also be subject to large water resistance, and the supercharging efficiency is low. Utility Model Content

[0004] In order to overcome the above-mentioned problems existing in the prior art, the present application provides a high-efficiency waterwheel-type aerator, which is equipped with a toothed impeller; the toothed impeller is provided with a guide flange folded toward the water-displacing direction of the blade at the edge of the blade, which can guide the water flow, increase the water displacement, reduce the water displacement resistance, and reduce the energy consumption of the aerator; at the same time, by providing a drainage hole on the blade body and a guide groove on the guide flange, the fluidity of the water is increased, and the water flow moved by the blade can be diverted, changing the direction of the water splash, so that the water splash can be spread around and fully contact with the air, thereby improving the oxygenation efficiency. Correspondingly, the present application also provides a toothed impeller equipped with a high-efficiency waterwheel-type aerator.

[0005] For the aerator, the technical solution of the present application is: a high-efficiency waterwheel-type aerator, including a group of pontoons; a bracket is provided on the top of the pontoons; a power device is provided on the bracket; an impeller shaft is connected to the output end of the power device; an impeller is provided on the impeller shaft; the impeller is a toothed impeller, which includes a wheel body and a group of blades arranged on the outer peripheral wall of the wheel body at intervals along the circumferential direction; an axial hole is provided in the middle of the wheel body for the impeller shaft to pass through; the blade includes a blade body connected to the wheel body, and a guide flange provided at the outer edge of the blade body; the guide flange is folded toward the water-displacing direction of the blade; a group of drainage holes are provided on the blade body at intervals; a group of guide grooves are provided on the guide flange at intervals. When in use, the power device drives the impeller shaft to rotate, drives the impeller to rotate, and realizes oxygenation.

[0006] Compared with the prior art, the high-efficiency waterwheel-type aerator of the present application is equipped with a toothed impeller, which has a guide flange at the edge of the blade that is folded toward the water-displacing direction of the blade, which can guide the water flow, increase the water displacement amount, reduce the water displacement resistance, and reduce the energy consumption of the aerator; at the same time, a drainage hole is opened on the blade body to facilitate the water flow to pass through, thereby increasing the fluidity of the water, and a guide groove is opened on the guide flange to divert the water flow displaced by the blade and change the direction of the water splash so that the water splash can spread to the surroundings and fully contact with the air, thereby improving the oxygenation efficiency.

[0007] As an optimization, in the aforementioned high-efficiency waterwheel-type aerator, impeller hubs are axially arranged on both sides of the shaft hole; the impeller shaft and the impeller hub are fastened and fixed by bolts. In this case, the connection structure is simple and easy to implement.

[0008] As an optimization, in the aforementioned high-efficiency waterwheel-type aerator, the impeller shaft is fixed to the bracket via a bearing seat. The bearing seat is used to support the impeller shaft and ensure the stability of the impeller shaft during rotation.

[0009] As an optimization, in the aforementioned high-efficiency waterwheel-type aerator, the number of the floating boats is 3, and an impeller is provided on each side of the floating boat. In this case, the contact area between the aerator and the water surface is larger, and the oxygenation efficiency is higher; in addition, an impeller is provided on each side of the floating boat, so that the aerator can maintain balance during travel.

[0010] As an optimization, in the aforementioned high-efficiency waterwheel-type aerator, the power device is a dual-output shaft reduction motor. In this case, only one motor is needed to drive multiple impellers to rotate synchronously, which has low production cost and good economy.

[0011] For the impeller, the technical solution of the present application is: the toothed impeller equipped with the high-efficiency waterwheel-type aerator comprises a wheel body and a group of blades arranged on the outer peripheral wall of the wheel body at intervals along the circumferential direction; the middle part of the wheel body is provided with an axial hole for the impeller shaft to pass through; the blade comprises a blade body connected to the wheel body, and a guide flange arranged at the outer edge of the blade body; the guide flange is folded toward the water-displacing direction of the blade; a group of drainage holes are arranged at intervals on the blade body; a group of guide grooves are arranged at intervals on the guide flange.

[0012] Compared with the prior art, the toothed impeller equipped with the high-efficiency waterwheel-type aerator of the present application includes a wheel body and blades; wherein, a guide flange folded toward the water-displacing direction of the blade is provided at the edge of the blade, which can guide the water flow, increase the water displacement, reduce the water displacement resistance, and reduce the energy consumption of the aerator; at the same time, a drainage hole is provided on the blade body to facilitate the water flow to pass through, thereby increasing the fluidity of the water, and a guide groove is provided on the guide flange to divert the water flow displaced by the blade and change the direction of the water splash so that the water splash can spread to the surroundings and fully contact with the air, thereby improving the oxygenation efficiency; in addition, the toothed impeller is integrally formed, which is relatively convenient to assemble, and the overall stability of the aerator after assembly is good and the reliability of use is high.

[0013] As an optimization, in the toothed impeller equipped with the aforementioned high-efficiency waterwheel-type aerator, a connecting rib is provided between the back-water surface of the blade body and the wheel body, thereby improving the connection firmness between the blade body and the wheel body, and further improving the overall structural strength of the impeller.

[0014] As an optimization, in the toothed impeller equipped with the aforementioned high-efficiency waterwheel-type aerator, a reinforcing rib is provided on the water-discharging surface of the blade body, located between two adjacent drainage holes, so that the structural strength of the blade body can be enhanced, making the blade less likely to break when discharging water.

[0015] As an optimization, in the toothed impeller equipped with the aforementioned high-efficiency waterwheel-type aerator, the wheel body includes an inner ring and an outer ring, and a group of connecting rods arranged between the inner ring and the outer ring, and a groove is formed between two adjacent connecting rods. The wheel body adopts the above structure, which can save manufacturing consumables, and can also greatly reduce the weight of the wheel body without reducing the bearing capacity of the wheel body, so that the overall weight of the impeller is lighter.

[0016] As an optimization, in the toothed impeller equipped with the aforementioned high-efficiency waterwheel-type aerator, impeller hubs are axially arranged on both sides of the shaft hole, and threaded holes are opened on the side walls of the impeller hub. In this case, the structure is simple, and it is easy to install the impeller and the impeller shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a high-efficiency waterwheel-type aerator in an embodiment of the present application;

[0018] Figure 2 yes Figure 1 The schematic diagram of the structure of the high-efficiency waterwheel aerator after the impeller is removed;

[0019] Figure 3 is a schematic structural diagram of a toothed impeller in an embodiment of the present application;

[0020] Figure 4 yes Figure 3 Front view of the toothed impeller.

[0021] The markings in the attached drawings are: 1-floating boat; 2-bracket; 3-power unit; 4-impeller shaft; 5-impeller, 51-wheel body, 511-shaft hole, 512-impeller hub, 513-inner ring, 514-outer ring, 515-connecting rod, 516-groove, 52-blade, 521-blade body, 522-guide flange, 523-drainage hole, 524-guide groove, 525-reinforcement rib, 53-connecting convex rib; 6-bearing seat. DETAILED DESCRIPTION

[0022] The present application is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present application.

[0023] See also Figure 1 The high-efficiency waterwheel-type aerator of the present application comprises a group of floating boats 1; a bracket 2 is provided on the top of the floating boat 1; a power device 3 is provided on the bracket 2; an impeller shaft 4 is connected to the output end of the power device 3; an impeller 5 is provided on the impeller shaft 4; the impeller 5 is a toothed impeller, which comprises a wheel body 51 and a group of blades 52 arranged on the outer peripheral wall of the wheel body 51 at intervals along the circumferential direction; an axial hole 511 is provided in the middle of the wheel body 51 for the impeller shaft 4 to pass through; the blade 52 comprises a blade body 521 connected to the wheel body 51, and a guide flange 522 arranged at the outer edge of the blade body 521; the guide flange 522 is folded toward the water-displacing direction of the blade 52; a group of drainage holes 523 are provided on the blade body 521 at intervals; a group of guide grooves 524 are provided on the guide flange 522 at intervals.

[0024] Example (see Figure 1 to Figure 4 ):

[0025] In this embodiment, impeller hubs 512 are axially arranged on both sides of the shaft hole 511; the impeller shaft 4 and the impeller hub 512 are fixed by bolts (threaded holes are provided on the side walls of the impeller hub 512). In this case, the connection structure is simple and easy to implement.

[0026] In this embodiment, the bracket 2 is provided with a bearing seat 6; the bearing seat 6 is provided with a rubber bearing sleeve, and the impeller shaft 4 is inserted into the rubber bearing sleeve. The bearing seat 6 is used to support the impeller shaft 4 to ensure the stability of the impeller shaft 4 during rotation; the provision of the rubber bearing sleeve can reduce the friction coefficient of the impeller shaft 4 during rotation, ensure its normal working position and rotation accuracy, and the rubber bearing sleeve can be lubricated by the water stirred by the impeller, which is convenient to use and maintain and easy to replace.

[0027] In this embodiment, the number of the floating boats 1 is 3. At this time, the contact area between the aerator and the water surface is large, and the oxygenation efficiency is high. An impeller 5 is respectively provided on both sides of the floating boat 1, so that the aerator can maintain balance during the movement. Among them, the power device 3 is located above the middle floating boat 1. Furthermore, the power device 3 is a dual-output shaft reduction motor. At this time, only one motor is needed to drive multiple impellers 5 to rotate synchronously, which has low production cost and good economy.

[0028] In this embodiment, a connecting rib 53 is provided between the back surface of the blade body 521 and the wheel body 51. Thus, the connection firmness between the blade body 521 and the wheel body 51 can be improved, thereby improving the overall structural strength of the impeller 5.

[0029] In this embodiment, a reinforcing rib 525 is provided on the water-repelling surface of the blade body 521, located between two adjacent drainage holes 523. Thus, the structural strength of the blade body 521 can be enhanced, so that the blade 52 is not easily broken when water is repelled. Reinforcing ribs are also provided on the back surface of the blade body 521, located on both sides of the connecting rib 53.

[0030] In this embodiment, the wheel body 51 includes an inner ring 513 and an outer ring 514, and a group of connecting rods 515 arranged between the inner ring 513 and the outer ring 514, and a groove 516 is formed between two adjacent connecting rods 515. The wheel body 51 adopts the above structure, which can save manufacturing consumables, and can also greatly reduce the weight of the wheel body 51 without reducing the bearing capacity of the wheel body 51, so that the overall weight of the impeller 5 is lighter.

[0031] The above general description of the utility model involved in this application and the description of its specific implementation method should not be understood as limiting the technical solution of the utility model. Based on the disclosure of this application, those skilled in the art can add, reduce or combine the disclosed technical features in the above general description or / and the specific implementation method (including examples) without violating the constituent elements of the utility model involved, to form other technical solutions within the scope of protection of this application.

Claims

1. A high-efficiency waterwheel-type aerator, comprising a group of floating boats (1); a bracket (2) is provided on the top of the floating boats (1); a power device (3) is provided on the bracket (2); an impeller shaft (4) is connected to the output end of the power device (3); an impeller (5) is provided on the impeller shaft (4); the characteristics are: The impeller (5) is a toothed impeller, comprising a wheel body (51) and a group of blades (52) arranged at intervals along the circumferential direction on the outer peripheral wall of the wheel body (51); a shaft hole (511) for the impeller shaft (4) to pass through is provided in the middle of the wheel body (51); the blade (52) comprises a blade body (521) connected to the wheel body (51), and a flow guide flange (522) arranged at the outer edge of the blade body (521); the flow guide flange (522) is folded toward the water-displacing direction of the blade (52); a group of drainage holes (523) are arranged at intervals on the blade body (521); and a group of flow guide grooves (524) are arranged at intervals on the flow guide flange (522).

2. The high-efficiency waterwheel-type aerator according to claim 1, characterized in that: Impeller hubs (512) are axially arranged on both sides of the shaft hole (511); the impeller shaft (4) and the impeller hub (512) are fixed by bolts.

3. The high-efficiency waterwheel-type aerator according to claim 1, characterized in that: The impeller shaft (4) is fixed on the bracket (2) via a bearing seat (6).

4. The high-efficiency waterwheel-type aerator according to claim 1, characterized in that: The number of the floating boats (1) is three, and an impeller (5) is respectively provided on both sides of the floating boats (1).

5. The high-efficiency waterwheel-type aerator according to claim 1, characterized in that: The power device (3) is a dual-output shaft reduction motor.

6. A toothed impeller equipped with a high-efficiency waterwheel-type aerator, comprising a wheel body (51) and a group of blades (52) arranged on the outer peripheral wall of the wheel body (51) at intervals along the circumferential direction; a shaft hole (511) for the impeller shaft (4) to pass through is provided in the middle of the wheel body (51); the characteristics are: The blade (52) comprises a blade body (521) connected to the wheel body (51), and a flow-guiding flange (522) arranged at the outer edge of the blade body (521); the flow-guiding flange (522) is folded toward the water-displacing direction of the blade (52); a group of drainage holes (523) are arranged at intervals on the blade body (521); and a group of flow-guiding grooves (524) are arranged at intervals on the flow-guiding flange (522).

7. The toothed impeller of the high-efficiency waterwheel-type aerator according to claim 6 is characterized in that: A connecting rib (53) is provided between the back-to-water surface of the blade body (521) and the wheel body (51).

8. The toothed impeller of the high-efficiency waterwheel-type aerator according to claim 7 is characterized in that: A reinforcing rib (525) is provided on the water-displacing surface of the blade body (521) between two adjacent drainage holes (523).

9. The toothed impeller of the high-efficiency waterwheel-type aerator according to claim 6 is characterized in that: The wheel body (51) comprises an inner ring (513) and an outer ring (514), and a group of connecting rods (515) arranged between the inner ring (513) and the outer ring (514), and a groove (516) is formed between two adjacent connecting rods (515).

10. The toothed impeller of the high-efficiency waterwheel-type aerator according to claim 6 is characterized in that: Impeller hubs (512) are axially arranged on both sides of the shaft hole (511); and threaded holes are provided on the side walls of the impeller hub (512).

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