Multi-blade waterwheel type oxygenator impeller and waterwheel type oxygenator adopting the same

Abstract

The utility model discloses a kind of multi-blade waterwheel type oxygenator impeller and waterwheel type oxygenator using the impeller, the impeller includes wheel body, the axle hole is set in wheel body central position, the axle hole outside is set impeller hub, the impeller hub circumscribes impeller inner ring, the impeller inner ring circumscribes impeller outer ring by multiple connecting rods, the outside of the impeller outer ring is set multiple blades;The blade includes multiple staggered arrangement blade main body, the bottom of the blade main body is set drainage hole, the drainage hole of the multiple staggered arrangement blade main body is staggered arrangement from front to back and left and right. The blade main body of the utility model is staggered layout, can eliminate water flow interference, form continuous wave superposition, expand water body circulation range, reduce impeller energy consumption;It can reduce the resistance peak value of blade water instantaneous, prolong water body retention time, improve dissolved oxygen efficiency. Drainage hole is staggered layout, can disperse air into micro-bubble and prolong gas-liquid contact time, realize dissolved oxygen efficiency promotion.

Description

Technical Field

[0001] This utility model relates to the field of aerator technology, specifically to a multi-bladed waterwheel aerator impeller and a waterwheel aerator using the impeller. Background Technology

[0002] Aerators are essential equipment in aquaculture, primarily used to increase the dissolved oxygen level in the water to prevent oxygen deficiency. They also inhibit the growth of anaerobic bacteria, preventing water quality deterioration that could threaten the survival of fish and shrimp. Paddlewheel aerators mainly consist of a float, support frame, power unit, and impeller. During operation, the power unit drives the impeller to rotate. The impeller blades are partially or completely submerged in water. During rotation, the blades strike the water surface at high speed, creating splashes that dissolve a large amount of air, forming dissolved oxygen, which is then carried into the water. Simultaneously, a strong force is generated, pushing surface water to the bottom of the pond and propelling the water, causing it to circulate and rapidly dissipating the dissolved oxygen.

[0003] The existing waterwheel-type aerator has the following problems:

[0004] (1) Large water flow interference and high impeller energy consumption: The blades of the existing impeller are all integral structures, which results in large water flow interference when the front and rear blades hit the water surface; and the integral structure of the blades has a large contact area with the water surface, resulting in large water resistance and high impeller energy consumption.

[0005] (2) Short water retention time and low dissolved oxygen rate: The overall structure of the blades results in a short water retention time and a low dissolved oxygen rate when the blades beat the water surface to form waves.

[0006] (3) The impeller blades of the prior art have the same row of drainage holes, which can only play a drainage role at the same time. Utility Model Content

[0007] This utility model provides a multi-bladed waterwheel aerator impeller and a waterwheel aerator using the impeller to overcome the above-mentioned problems in the prior art: namely (1) large water flow interference and high impeller energy consumption; (2) short water retention time and low dissolved oxygen rate; (3) the function of the drainage hole is singular, only having the function of drainage.

[0008] Regarding the impeller, the technical solution of this utility model is as follows:

[0009] A multi-bladed waterwheel-type aerator impeller includes a wheel body with a shaft hole at its center and an impeller hub outside the shaft hole. An inner impeller ring is connected to the impeller hub, and the inner impeller ring is connected to an outer impeller ring via multiple connecting rods. Multiple blades are arranged on the outer side of the outer impeller ring. Each blade includes multiple staggered blade bodies, with a flow-draining hole at the bottom of each blade body. The flow-draining holes of the staggered blade bodies are arranged in a staggered manner, front-back and left-right.

[0010] Compared with existing technologies, this invention reduces the contact area between the blades and the water surface when they enter the water by staggering the arrangement of multiple blade bodies, significantly reducing the resistance of the blade bodies entering the water and lowering the energy consumption of the impeller. Secondly, the staggered arrangement of the blade bodies allows the waves formed by the blade bodies entering the water first to overlap with those formed by the blade bodies entering the water later, eliminating the water flow interference problem caused by the front and rear blades in traditional impellers. The overlapped waves can expand the water circulation range. Thirdly, the staggered arrangement of the blade bodies can prolong the time the waves formed by the blade bodies hitting the water surface remain in the air, increasing the dissolved oxygen rate. Finally, the staggered arrangement of the blade bodies also allows the drainage holes at the bottom of the blade bodies to be staggered, so that the drainage holes entering the water sequentially play different roles: the drainage holes entering the water first guide the water flow to the drainage holes entering the water later, while the drainage holes at both ends also act as air vents. Through the synergistic effect of drainage and air vents, air is dispersed into microbubbles and the gas-liquid contact time is prolonged, thereby improving dissolved oxygen efficiency.

[0011] As an optimization, in the aforementioned multi-bladed waterwheel aerator impeller, the number of blade bodies is five, arranged in three rows. Each row of the three rows has two, two, and one blade body respectively, arranged in an isosceles triangle configuration according to the order of water entry. Compared with existing technologies, this blade body arrangement makes full use of the space and allows for staggered arrangement, resulting in a uniform and regular staggered arrangement of the blade bodies and the drainage holes, especially with the front and rear drainage holes staggered from wide to narrow. The first row has two blade bodies and occupies a wider space; the second row has two blade bodies and occupies a narrower space than the first row; and the third row has only one blade body. This staggered arrangement significantly increases the number of blade bodies that can be arranged around the impeller compared to traditional designs, increasing the number of times the blade bodies contact the water surface and thus significantly increasing the amount of splashing water formed. Furthermore, the staggered arrangement of the blades allows the spray formed by the blades that enter the water first to overlap with the spray formed by the blades that enter the water later, further increasing the spray and improving the dissolved oxygen content of the water.

[0012] As an optimization, in the aforementioned multi-bladed waterwheel-type aerator impeller, the blades include a fixing plate, the blade body is fixed to the fixing plate, and a first connecting plate and a second connecting plate are provided at the bottom of the fixing plate, which are connected and fixed to the outer ring of the impeller through the first connecting plate and the second connecting plate. This arrangement can further secure the blades.

[0013] As an optimization, an inner groove is provided between two adjacent connecting rods in the aforementioned multi-bladed waterwheel aerator impeller.

[0014] As an optimization, in the aforementioned multi-bladed waterwheel aerator impeller, the impeller hub is provided with threads facing the inner side of the shaft hole.

[0015] For aerators, this utility model provides the following technical solution:

[0016] A waterwheel aerator includes a set of floating boats, with a support frame on the upper part of the floating boats. A power unit is mounted on the support frame, and the output end of the power unit is connected to an impeller shaft. The impeller shaft is equipped with the aforementioned multi-bladed waterwheel aerator impeller.

[0017] As an optimization, in the aforementioned waterwheel-type aerator, the impeller shaft is fixed to the bracket via a bearing housing. The bearing housing supports the impeller shaft, ensuring its stability during rotation.

[0018] As an optimization, in the aforementioned waterwheel-type aerator, the number of floating boats is three, with an impeller on each side of the floating boat. This arrangement makes full use of the space on the floating boats, and at this time, the contact area between the aerator and the water surface is large, resulting in higher aeration efficiency. In addition, having an impeller on each side of the aerator helps to maintain balance during movement.

[0019] As an optimization, in the aforementioned waterwheel-type aerator, the power unit is a dual-output shaft geared motor. In this case, only one motor is needed to drive multiple impellers to rotate synchronously, resulting in low production costs and good economic efficiency.

[0020] As an optimization, in the aforementioned waterwheel-type aerator, the impeller shaft is bolted to the impeller. This results in a simple connection structure that is easy to implement.

[0021] Compared with the prior art, the beneficial technical effects of this utility model are: (1) The blade body is staggered, which can eliminate water flow interference, form continuous wave superposition, expand the water circulation range, and reduce impeller energy consumption. (2) The staggered layout of the blade body can reduce the peak resistance of the blade body when it enters the water, and at the same time prolong the water retention time and improve dissolved oxygen efficiency. (3) The drainage holes at the bottom of the blade body are staggered, which can make the drainage holes that enter the water first play a drainage role for the drainage holes that enter the water later. At the same time, the drainage holes at the front and rear also play the role of air holes. Through the synergistic effect of drainage and air holes, the air is dispersed into microbubbles and the gas-liquid contact time is prolonged, thereby improving dissolved oxygen efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the waterwheel-type aerator of this utility model.

[0023] Figure 2 This is a three-dimensional structural diagram of the impeller of the multi-bladed waterwheel aerator of this utility model.

[0024] Figure 3 This is a front view of the impeller of the multi-bladed waterwheel aerator of this utility model.

[0025] Reference numerals: 1-Floating vessel; 2-Support; 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-Inner groove; 52-Blade; 521-Blade body; 522-First connecting plate; 523-Drainage hole; 524-Second connecting plate; 6-Bearing seat. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings, but this should not be construed as limiting the present utility model. Contents not described in detail in the following embodiments are all common knowledge in the art or can be implemented using conventional technical means in the art.

[0027] Reference to embodiments of this utility model Figure 1-3 .

[0028] like Figure 1As shown, a waterwheel-type aerator includes a set of three floating boats 1. A support frame 2 is mounted on the upper part of each floating boat 1, and a power unit 3 is mounted on the support frame 2. The output end of the power unit 3 is connected to an impeller shaft 4. The impeller shaft 4 is fixed to the support frame via bearing seats 6. The bearing seats 6 support the impeller shaft 4, ensuring its stability during rotation. Impellers 5 are mounted on the impeller shaft 4. The impellers 5 are staggered blade impellers. The impellers 5 are located on both sides of the floating boat 1, and in this invention, there are four impellers 5. This arrangement fully utilizes the space of the floating boat 1, with one impeller 5 on each side of the aerator, facilitating balance during operation. The power unit 3 is a dual-output shaft geared motor. Therefore, only one motor is needed to drive multiple impellers to rotate synchronously, resulting in low production costs and good economic efficiency. The impeller shaft 4 is bolted to the impellers 5. This connection structure is simple and easy to implement.

[0029] like Figure 1-3 As shown, the multi-blade impeller of the aforementioned waterwheel aerator is described. The impeller 5 includes a wheel body 51, with a shaft hole 511 at the center of the wheel body 51. An impeller hub 512 is located outside the shaft hole 511. An inner impeller ring 513 is connected to the impeller hub 512. The inner impeller ring 513 is connected to an outer impeller ring 514 via multiple connecting rods 515. Multiple blades 52 are arranged on the outer side of the outer impeller ring 514. Each blade 52 includes multiple staggered blade bodies 521. A flow-draining hole 523 is provided at the bottom of each blade body 521. The flow-draining holes 523 of the multiple staggered blade bodies 521 are staggered in the front-back and left-right directions.

[0030] This invention reduces the contact area between the blade bodies 521 and the water surface when they enter the water by staggering the arrangement of multiple blade bodies 521, significantly reducing the resistance of the blade bodies 521 upon entry and lowering the energy consumption of the impeller 5. Secondly, the staggered arrangement of the blade bodies 521 allows the waves formed by the blade bodies 521 entering the water first to overlap with the waves formed by the blade bodies 521 entering the water later, eliminating the water flow interference problem caused by the front and rear blades of the traditional impeller 5. The overlapped waves can expand the water circulation range. Thirdly, the staggered arrangement of the blade bodies 521 can prolong the time that the waves formed by the blade bodies 521 impacting the water surface remain in the air, increasing the dissolved oxygen rate. Finally, the staggered arrangement of the blade bodies 521 also results in staggered arrangement of the drainage holes 523 at the bottom of the blade bodies. This allows the drainage holes 523, which enter water sequentially, to serve different functions: the drainage hole 523 that enters water first guides the water flow to the drainage hole 523 that enters water later, while the drainage holes 523 at both ends also function as vents. Through the synergistic effect of drainage and vents, air is dispersed into microbubbles and the gas-liquid contact time is prolonged, thereby improving dissolved oxygen efficiency.

[0031] like Figure 2-3 As shown, the blade 52 has five blade bodies 521, arranged in three rows. Each row of the three rows has two, two, and one blade body 521 respectively, arranged in an isosceles triangle pattern according to their entry sequence into the water. This arrangement of the blade bodies 521 fully utilizes the available space and allows for staggered placement, ensuring a uniform and regular staggered arrangement of the blade bodies 521 and the drainage holes 523, particularly with the front and rear drainage holes staggered from wide to narrow. The first row has two blade bodies 521 and occupies a wider space; the second row has two blade bodies 521 and occupies a narrower space than the first row; the third row has only one blade body 521. This staggered arrangement significantly increases the number of blade bodies 521 that can be arranged on the impeller 5 per revolution compared to traditional designs, increasing the number of times the blade bodies 521 contact the water surface and thus significantly increasing the amount of splash water formed. Furthermore, the staggered arrangement of the blade bodies 521 allows the splash water formed by the blade bodies 521 that enter the water first to overlap with the splash water formed by the blade bodies 521 that enter the water later, further increasing the splash water volume and improving the dissolved oxygen content of the water.

[0032] like Figure 2-3 As shown, the blade 52 includes a fixing plate 525, and the blade body 521 is fixed to the fixing plate 525. A first connecting plate 522 and a second connecting plate 524 are provided at the bottom of the fixing plate 525, and are connected and fixed to the impeller outer ring 514 through the first connecting plate 522 and the second connecting plate 524. This arrangement further secures the blade. An inner groove 516 is provided between two adjacent connecting rods 515. The impeller hub 512 has threads on its inner side facing the shaft hole 511.

[0033] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this utility model.

Claims

1. A multi-bladed waterwheel-type aerator impeller, characterized in that: The impeller (5) includes a wheel body (51), a shaft hole (511) is provided at the center of the wheel body (51), an impeller hub (512) is provided on the outside of the shaft hole (511), the impeller hub (512) is connected to the impeller inner ring (513), the impeller inner ring (513) is connected to the impeller outer ring (514) through multiple connecting rods (515), and multiple blades (52) are provided on the outside of the impeller outer ring (514); the blades (52) include multiple staggered blade bodies (521), the bottom of the blade body (521) is provided with a flow hole (523), and the flow holes (523) of the multiple staggered blade bodies (521) are staggered in front, back, left and right.

2. The multi-bladed waterwheel-type aerator impeller according to claim 1, characterized in that: The blade (52) has five blade bodies (521), which are arranged in three rows. The three rows of blade bodies (521) are arranged in the order of entering the water, with two blade bodies (521), two blade bodies (521), and one blade body (521) in each row. The five blade bodies (521) are arranged in an isosceles triangle.

3. The impeller of the multi-bladed waterwheel type aerator according to claim 1, characterized in that: The blade (52) includes a fixing plate (525), the blade body (521) is fixed on the fixing plate (525), and the bottom of the fixing plate (525) is provided with a first connecting plate (522) and a second connecting plate (524), and is connected and fixed to the outer ring (514) of the impeller through the first connecting plate (522) and the second connecting plate (524).

4. The impeller of the multi-bladed waterwheel type aerator according to claim 1, characterized in that: An inner groove (516) is provided between two adjacent connecting rods (515).

5. The impeller of the multi-bladed waterwheel type aerator according to claim 1, characterized in that: The impeller hub (512) is threaded on the inner side facing the shaft hole (511).

6. A waterwheel-type aerator, comprising a set of floating boats (1), wherein a support (2) is provided on the upper part of the floating boats (1), and a power unit (3) is provided on the support (2), the output end of the power unit (3) being connected to an impeller shaft (4); characterized in that: The impeller shaft (4) is provided with a multi-bladed waterwheel aerator impeller as described in any one of claims 1-5.

7. The waterwheel-type aerator according to claim 6, characterized in that: The impeller shaft (4) is fixed to the bracket by a bearing seat (6).

8. The waterwheel-type aerator according to claim 6, characterized in that: The number of the floating vessels (1) is three, and each floating vessel (1) has an impeller (5) on its two sides.

9. The waterwheel-type aerator according to claim 6, characterized in that: The power unit (3) is a dual-output shaft geared motor.

10. The waterwheel-type aerator according to claim 6, characterized in that: The impeller shaft (4) is bolted to the impeller (5).

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