Air compression stirring aeration nozzle

Abstract

The utility model provides an air compression stirring aeration nozzle which comprises a sleeve with a hollow inner cavity, a compressed air inlet pipe capable of rotating around the central axis is arranged in the hollow inner cavity, and a plurality of rotary cutting mechanisms are distributed on the outer wall of the compressed air inlet pipe in the height direction of the compressed air inlet pipe. The rotary cutting mechanism comprises a plurality of rotary blades with convex riflings, and the rotary blades can rotate along with the compressed air inlet pipe. According to the rifling rotary cutting device, a rifling rotary cutting mode is innovatively used, large bubbles are subjected to rotary cutting to form small bubbles, meanwhile, rotating force generated in the bubble rotary cutting process drives sediment bottom mud to roll over, and the double effects of improving the oxygen dissolving rate of slurry and fully stirring are achieved.

Description

Technical Field

[0001] The utility model relates to the field of water treatment, in particular to an aeration nozzle. Background Art

[0002] For a long time, mechanical stirring or compressed air stirring has been used to slurry various types of mud-water mixed liquids. Although mechanical stirring can slurry mud-water mixtures, it cannot meet the aeration requirements, such as stirring aerobic tanks in urban sewage treatment plants or stirring aeration tanks in various factory sewage treatment plants. Compressed air stirring can simultaneously meet the two production process requirements of mud-water mixture stirring and aeration. At present, compressed air stirring mostly adopts microporous aeration or straight tube aeration. The advantage of microporous aeration stirring is that compressed air forms a large number of small bubbles, which helps to improve the dissolved oxygen efficiency of the stirred slurry, and the aeration effect is good with small gas volume. The disadvantage is that the air resistance is large, which leads to air suffocation in the air compressor system and increases the equipment failure rate. The small gas volume leads to poor tumbling stirring effect and it is difficult to meet the full stirring effect. At the same time, the microporous equipment is easily blocked in the actual production process, which seriously affects normal operation and increases the equipment maintenance rate and maintenance cost. The microporous aeration method mostly adopts the pre-buried method, which is difficult to install and replace. The straight tube aeration stirring method has the advantages of large gas volume, good stirring effect, large air outlet, and not easy to be blocked. Direct plug-in installation is easy to install and repair. The disadvantage is that the bubbles are large, the dissolved oxygen efficiency of the stirred slurry is low, and it is difficult to meet the aeration effect requirements. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides an air-compressed stirring aeration nozzle, which allows compressed air to pass through the internal rotary blades and the rotary blade rifling structure to generate a rotating small bubble airflow, achieving the dual effects of rotary stirring and aeration, and at the same time, the air outlet is large and not easily blocked by dirt. It has the advantages of simple structure and easy installation, and well avoids the disadvantages of the above-mentioned microporous aeration pipe being difficult to install and replace.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A compressed air stirring aeration nozzle comprises a cylindrical sleeve having a hollow inner cavity, the bottom of which has an open opening, and is characterized in that a compressed air inlet pipe rotatable around the central axis of the hollow inner cavity is arranged in the hollow inner cavity, the top of the compressed gas inlet pipe is arranged as an air inlet, the bottom of the compressed gas inlet pipe is arranged in the sleeve and is open as an air outlet, and a plurality of rotating cutting mechanisms are distributed on the outer wall of the compressed air inlet pipe along its height direction, and the rotating cutting mechanism can rotate with the compressed air inlet pipe.

[0006] The rotary cutting mechanism comprises a plurality of rotary blades, and the plurality of rotary blades are evenly arranged around the outer circumference of the compressed air inlet pipe, and adjacent rotary blades have the same gap between them.

[0007] The rotating blades are fan-shaped rotating blades.

[0008] The fan-shaped rotating blade has a short arc side and a long arc side, the short arc side is fixed on the outer circumference of the compressed air inlet pipe, and the long arc side is arranged close to the inner wall of the sleeve.

[0009] The fan-shaped rotating blade is provided with a plurality of convex rifling lines.

[0010] The extending direction of the convex bore line is the direction surrounding the central axis of the compressed air intake pipe.

[0011] The rotary cutting mechanism comprises four fan-shaped rotary blades.

[0012] Two rotary cutting mechanisms are distributed on the outer wall of the compressed air inlet pipe along its height direction, one of which is located near the top of the sleeve, and the other is located near the bottom of the sleeve.

[0013] The top of the compressed air intake pipe is provided with a flange or a spiral interface, and the compressed air intake pipe is connected to the intake mechanism via the flange or the spiral interface at the top.

[0014] An air intake valve is arranged at the position where the top of the compressed air intake pipe is connected to the air intake mechanism.

[0015] The beneficial effects of the utility model are:

[0016] The air-compressed aeration nozzle of the utility model innovatively uses rotating blades, especially rifling rotary cutting, to rotary cut large bubbles into small bubbles. At the same time, the rotary force generated during the bubble rotary cutting process drives the sediment to roll, achieving the dual effects of increasing the oxygen dissolved rate of the slurry and fully stirring. The air outlet is large and the direct plug-in installation avoids the disadvantages of easy clogging and difficulty in installation and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the aeration nozzle of the utility model;

[0019] Figure 2 This is a schematic diagram of the top view of the aeration nozzle of the utility model;

[0020] Figure 3 This is a schematic diagram of the aeration nozzle of the utility model in use.

[0021] in:

[0022] 10-sleeve; 20-compressed air inlet pipe; 21-air inlet; 22-air outlet; 30-rotating cutting mechanism; 31-rotating blades; 32-convex rifling; 41-intake mechanism; 42-intake valve; 50-paddle trough or aeration tank. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and do not constitute a limitation of the utility model.

[0024] like Figure 1 As shown, the utility model provides an air-compressed stirring aeration nozzle, including a cylindrical sleeve 10, the sleeve 10 has a hollow inner cavity, the bottom of the hollow inner cavity has an open opening, a compressed air inlet pipe 20 that can rotate around the central axis of the hollow inner cavity is arranged in the hollow inner cavity, the top of the compressed gas inlet pipe 20 is arranged as an air inlet 21, the bottom of the compressed gas inlet pipe 20 is arranged in the sleeve 10 and is opened as an air outlet 22, and a plurality of rotating cutting mechanisms 30 are distributed on the outer wall of the compressed air inlet pipe 20 along its height direction, and the rotating cutting mechanism 30 can rotate with the compressed air inlet pipe 20. Its use state is as follows Figure 3 As shown, during aeration, the compressed air aeration nozzle is set in the aeration tank or aeration pool 50, and its compressed gas inlet pipe is connected to the air inlet mechanism 41 through the valve 42. The air inlet mechanism 41 introduces compressed air into the compressed air inlet pipe 20. The compressed air flows downward in the direction of the arrow in the compressed air inlet pipe 20 and is ejected from the air outlet 22. After the compressed air ejected from the air outlet hits the bottom of the pool or the bottom of the tank, it rushes upward and is cut by the rotating cutting mechanism 30 of the nozzle, thereby generating small bubbles. At the same time, the compressed air hits the bottom of the pool or the bottom of the tank, impacting and stirring the sediment (mud or other materials) deposited at the bottom, and part of the sediment is cut by the rotating cutting mechanism 30 along with the upward airflow, which plays a role in dispersing the sediment.

[0025] The innovation of the utility model lies in the improvement of the structure of the rotary cutting mechanism. Figure 2As shown, the rotary cutting mechanism 30 includes a plurality of rotary blades 31, which are evenly arranged around the outer circumference of the compressed air intake pipe 20, and there are the same gaps between adjacent rotary blades 31. Specifically, the rotary blades 31 are fan-shaped rotary blades, which have a short arc edge and a long arc edge, the short arc edge is fixed on the outer circumference of the compressed air intake pipe 20, and the long arc edge is arranged close to the inner wall of the sleeve 10. The fan-shaped rotary blades have a plurality of convex grooves 32, and the extension direction of the convex grooves 32 is the direction of the central axis around the compressed air intake pipe 20. The function of the convex grooves 32 is to cut the bubbles into smaller and denser small bubbles during the rotation process, so as to achieve the dual effects of increasing the oxygen dissolved rate of the slurry and fully stirring.

[0026] In this embodiment, the rotary cutting mechanism 30 includes four fan-shaped rotary blades, and two rotary cutting mechanisms 30 are distributed on the outer wall of the compressed air inlet pipe 20 along its height direction, one of which is located near the top of the sleeve, and the other is located near the bottom of the sleeve.

[0027] To facilitate connection, the top of the compressed air intake pipe 20 has a flange or a spiral interface, and the compressed air intake pipe 20 is connected to the intake mechanism 41 through the flange or spiral interface on the top. An intake valve 42 is provided at the position where the top of the compressed air intake pipe 20 is connected to the intake mechanism 41.

[0028] The utility model innovatively uses rifling rotary cutting to rotary cut large bubbles into small bubbles. At the same time, the rotary force generated during the bubble rotary cutting process drives the sediment to roll, achieving the dual effects of increasing the oxygen dissolved rate of the slurry and fully stirring. The air outlet is large and the direct plug-in installation avoids the disadvantages of easy clogging and difficulty in installation and replacement.

[0029] The above specific implementation methods describe the basic principles and main features of the utility model. Those skilled in the art should understand that the protection scope of the utility model is not limited by the above embodiments, and any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. An air pressure stirring aeration nozzle, comprising a cylindrical sleeve, the sleeve having a hollow inner cavity, the bottom of the hollow inner cavity having an open opening, characterized in that: A compressed air inlet pipe that can rotate around the central axis of the hollow inner cavity is arranged in the hollow inner cavity, the top of the compressed air inlet pipe is arranged as an air inlet, the bottom of the compressed air inlet pipe is arranged in a sleeve and is opened as an air outlet, and a plurality of rotating cutting mechanisms are distributed on the outer wall of the compressed air inlet pipe along its height direction, and the rotating cutting mechanism can rotate with the compressed air inlet pipe.

2. The air pressure stirring aeration nozzle according to claim 1, characterized in that: The rotary cutting mechanism comprises a plurality of rotary blades, and the plurality of rotary blades are evenly arranged around the outer circumference of the compressed air inlet pipe, and adjacent rotary blades have the same gap between them.

3. An air pressure stirring aeration nozzle as claimed in claim 2, characterized in that: The rotating blades are fan-shaped rotating blades.

4. The air pressure stirring aeration nozzle as claimed in claim 3, characterized in that: The fan-shaped rotating blade has a short arc side and a long arc side, the short arc side is fixed on the outer circumference of the compressed air inlet pipe, and the long arc side is arranged closely against the inner wall of the sleeve.

5. The air pressure stirring aeration nozzle as claimed in claim 4, characterized in that: The fan-shaped rotating blade is provided with a plurality of convex rifling lines.

6. The air pressure stirring aeration nozzle as claimed in claim 5, characterized in that: The extending direction of the convex bore line is the direction surrounding the central axis of the compressed air intake pipe.

7. The air pressure stirring aeration nozzle according to claim 6, characterized in that: The rotary cutting mechanism comprises four fan-shaped rotary blades.

8. The air pressure stirring aeration nozzle according to claim 7, characterized in that: Two rotary cutting mechanisms are distributed on the outer wall of the compressed air inlet pipe along its height direction, one of which is located near the top of the sleeve, and the other is located near the bottom of the sleeve.

9. The air pressure stirring aeration nozzle as claimed in claim 8, characterized in that: The top of the compressed air intake pipe is provided with a flange or a spiral interface, and the compressed air intake pipe is connected to the intake mechanism via the flange or the spiral interface at the top.

10. The air pressure stirring aeration nozzle according to claim 9, characterized in that: An air intake valve is arranged at the position where the top of the compressed air intake pipe is connected to the air intake mechanism.

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