Liftable rotary oscillating aerator

Abstract

The present invention discloses a liftable rotary oscillating aerator, comprising a cylinder and an air inlet pipe arranged at the lower part of the cylinder, wherein a fixed block capable of moving along the axial direction of the cylinder is arranged in the cylinder, and a swirl blade driving the fixed block to rotate is arranged on the fixed block. When the oscillating aerator in the present application is used, the air intake of the air inlet pipe can be adjusted so that the swirl blade rotates around the fixed block while the fixed block continuously moves up and down, and the gas-liquid mixing effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, and in particular to a liftable rotary oscillating aerator. Background Art

[0002] Aerators are widely used in sewage treatment using biological treatment methods. They use the principle of aeration diffusion to transfer oxygen in the gas phase to the liquid phase, that is, to transfer oxygen in the gas phase to dissolved oxygen in the liquid phase, which is beneficial to the oxidation and decomposition of impurities in sewage. The gas is dispersed by the aerator to increase the contact area between the gas and sewage. Existing aerators either do not have stirring, and the gas dispersion effect is poor; or they have stirring, but require additional energy to keep the stirring device running, which increases energy consumption or equipment costs. Summary of the invention

[0003] The purpose of the present invention is to provide a liftable rotary oscillating aerator to solve the problem that a stirring device needs to be additionally connected to a power device.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A liftable rotary oscillating aerator comprises a cylinder and an air inlet pipe arranged at the lower part of the cylinder, wherein a fixed block which can move along the axial direction of the cylinder is arranged in the cylinder, and a swirl blade which drives the fixed block to rotate is arranged on the fixed block.

[0006] Preferably, a sliding rod is provided in the cylinder, at least one end of the sliding rod is fixed on the cylinder, and the fixing block is sleeved on the sliding rod.

[0007] Preferably, one end of the sliding rod is fixed on the cylinder body, and the other end is provided with a limiting block to prevent the fixing block from falling off.

[0008] Preferably, a collecting cover is provided at the lower end of the cylinder, the air outlet of the air inlet pipe is located in the collecting cover, and a liquid phase channel is provided between the collecting cover and the air outlet.

[0009] Preferably, at least one sudden cross section is provided on the cylinder around the fixing block, and the inner diameters of the cylinder on both sides of the sudden cross section are different.

[0010] Preferably, a gas breaking piece is provided on the surface of the fixing block facing the air inlet pipe.

[0011] Preferably, the cross-section of the fixing block gradually increases in a direction away from the air inlet pipe.

[0012] Preferably, there are more than two groups of swirl blades, which are arranged in sequence along the sliding rod.

[0013] Preferably, each of the fixing blocks is correspondingly provided with an elastic member, and the elastic member is arranged on a side of the corresponding fixing block away from the air intake pipe.

[0014] Preferably, each group of swirl blades is correspondingly provided with a fixing ring, and each of the swirl blades is fixed to the corresponding fixing ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are at least one of the following:

[0016] When the oscillating aerator in the present application is used, the air intake of the air intake pipe can be adjusted so that the gas in the air intake pipe continues to change, so that the fixed block continuously moves up and down under the combined action of the upward lifting force of the gas and its own gravity. In the process of up and down movement, the impact force of the gas-liquid mixture on the fixed block 3 and the swirl blades changes, which is more conducive to the dispersion of the gas in the liquid phase compared to not setting the fixed block 3 and the swirl blades.

[0017] In addition, after the fluid hits the swirl blade, since the swirl blade has a certain inclination angle, the fluid has a certain thrust on the swirl blade, causing the swirl blade to rotate around the fixed block, and the gas-liquid mixing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of another structure of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] This embodiment provides a liftable rotary oscillating aerator, such as Figure 1 As shown, it includes a cylinder 1 and an air inlet pipe 2 arranged at the lower part of the cylinder 1, a fixed block 3 capable of moving axially along the cylinder 1 is arranged in the cylinder 1, and a swirl blade 4 is arranged on the fixed block 3 to drive the fixed block 3 to rotate.

[0022] When the oscillating aerator in this embodiment is used, the air intake of the air intake pipe 2 can be adjusted so that the gas in the air intake pipe 2 keeps changing, so that the fixed block 3 is continuously moved up and down under the combined action of the upward lifting force of the gas and its own gravity. In the process of moving up and down, the impact force of the gas-liquid mixture on the fixed block 3 and the swirl blade 4 changes, which is more conducive to the dispersion of the gas in the liquid phase compared to not setting the fixed block 3 and the swirl blade 4.

[0023] In addition, after the fluid hits the swirl blade 4, since the swirl blade has a certain inclination angle, the fluid has a certain thrust on the swirl blade, so that the swirl blade rotates around the fixed block, and the gas-liquid mixing effect is better.

[0024] There is no special requirement for the structure of the fixing block 3 in the present application, as long as it can be used to fix the swirl blades 4 and can drive the swirl blades 4 to slide. The fixing block 3 in the present application moves along the axial direction, and in fact, it can also have a certain angle with the axial direction, as long as it is not completely radial and has a certain axial component.

[0025] In this embodiment, in order to enable the fixed block 3 to move within a certain range, a sliding rod 5 may be provided in the cylinder 1 , at least one end of the sliding rod 5 is fixed to the cylinder 1 , and the fixed block 3 is sleeved on the sliding rod 5 .

[0026] The slide bar 5 in this embodiment can be arranged along the axial direction of the cylinder 1, or can be slightly inclined. Although the slide bar 5 arranged along the radial direction can also cause the gas and the fixed block 3 to collide, which is conducive to the dispersion of the gas in the liquid phase compared to not setting the fixed block 3, the fixed block 3 cannot slide and oscillate under the action of the gas, and the dispersion effect is not as good as that of the inclined setting of the slide bar 5. If the slide bar is not set, the force-bearing surface of the fixed block can be set to a concave cone in the box, but the stability is relatively poor.

[0027] In this embodiment, a stirring zone may be provided at the outlet of the cylinder 1 to improve the mixing effect, or a stirring zone may not be provided.

[0028] In this embodiment, at least one end of the slide bar 5 needs to be fixed in the cylinder 1, and the fixing method can be through a connecting rod or a connecting block or any other structure. In addition, in order to prevent the fixed block 3 from detaching from the slide bar 5, the slide bar 5 can be fixed on the cylinder 1 at one end, and a limit block is provided at the other end to prevent the fixed block 3 from falling off. There are no special requirements for the shape and size of the limit block, as long as the limit block cannot pass through the through hole in the middle of the fixed block 3. In addition, the limit block can also be extended so that the other end of the limit block is also fixed on the inner wall of the cylinder 1, so that both ends of the slide bar 5 are fixed on the inner wall of the cylinder 1, and the structure of the slide bar 5 is more stable.

[0029] In this embodiment, a collecting cover 6 is provided at the lower end of the cylinder 1, the air outlet of the air inlet pipe 2 is located in the collecting cover 6, and a liquid phase channel is provided between the collecting cover 6 and the air outlet.

[0030] During the intake process of the intake pipe 2, negative pressure will be generated near the intake port, and the setting of the collecting cover 6 is conducive to the liquid being concentrated in the collecting cover 6 and entering the cylinder 1 with the intake air. The intake pipe 2 in this embodiment can be connected to a compressor, and the intake amount of the gas can be adjusted by adjusting the compressor.

[0031] In this embodiment, at least one sudden cross section 8 may be provided on the cylinder 1 around the fixing block 3, such as Figure 2 As shown, the inner diameters of the cylinder 1 on both sides of the sudden cross section 8 are different.

[0032] By adjusting the air intake to adjust the flow rate through the cylinder 1, the fixed block 3 can be vibrated. However, since the change of the flow rate is continuous and gradual, the vibration of the fixed block 3 is relatively stable. In order to make the vibration of the fixed block 3 more intense, a sudden change section 8 is set in the cylinder 1, so that the inner diameter of the cylinder 1 suddenly, regularly or irregularly increases or decreases, thereby causing a sudden change in the flow rate of the fluid and a sudden change in the lifting force of the vibration block, thereby causing the speed of the vibration block to rise or fall. Among them, the inner diameter of the cylinder 1 is preferably increased and decreased alternately.

[0033] In this embodiment, a gas dispersing member 9 may be provided on the surface of the fixing block 3 facing the air inlet pipe 2 .

[0034] The gas breaking member 9 in this embodiment can be an irregular protrusion, a breaking rod, or other structures. The gas is mainly dispersed into smaller bubbles through the collision between the gas and the gas breaking member 9, thereby increasing the gas-liquid contact area.

[0035] In this embodiment, the cross-section of the fixing block 3 may gradually increase in the direction away from the air inlet pipe 2 .

[0036] The cross section of the fixed block 3 is gradually increased, and can be matched with the setting of the sudden change cross section 8, so that when the gas flow rate remains stable within a range, the fixed block 3 can also vibrate continuously. Compared with adjusting the gas flow rate, this saves more energy consumption, and because the power of the air compressor that adjusts the gas flow rate is relatively stable, it is also conducive to extending the life of the air compressor.

[0037] In this embodiment, there may be more than two groups of swirl blades 4 , which are sequentially arranged along the slide rod 5 .

[0038] The mixing effect can be enhanced by providing multiple groups of swirl blades 4. In addition, in order to avoid the multiple groups of mixed flow blades from hindering each other when rotating, two groups of swirl blades 4 can adopt point contact to minimize the contact area and reduce friction.

[0039] In this embodiment, each of the fixing blocks 3 may be correspondingly provided with an elastic member 7 , and the elastic member 7 is provided on a side of the corresponding fixing block 3 away from the air intake pipe 2 .

[0040] The elastic member 7 can be made of rubber or spring, or other elastic pad materials. When the air intake pipe 2 starts to take in air, there may be errors in the gas flow control, resulting in excessive or insufficient gas flow. When the gas flow is too large, a large upward lifting force will be applied to the fixed block 3, causing the fixed block 3 to move upward quickly, which may collide with the fixed structure or the limiter at the upper end of the slide bar 5. Long-term, multiple, and strong collisions may damage the fixed block 3 or the connecting structure or the fiber parts, shortening the life of the equipment. Therefore, the elastic member 7 is provided to reduce the probability of equipment damage.

[0041] In addition, the elastic member 7 can store energy. Under normal circumstances, the force of the fixed block 3 moving downward will not be greater than the gravity. However, with the addition of the elastic member 7, the energy stored in the elastic member 7 may be released when the fixed block 3 descends, giving the fixed block 3 a downward thrust, thereby increasing the downward speed of the fixed block 3 and increasing the collision speed between the fixed block 3 and the gas, which is beneficial to the dispersion of the gas.

[0042] In this embodiment, each group of swirl blades 4 may be correspondingly provided with a fixing ring, and each of the swirl blades 4 is fixed to the corresponding fixing ring to improve the stability of the device.

[0043] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A liftable rotary oscillating aerator, characterized in that: The invention comprises a cylinder (1) and an air inlet pipe (2) arranged at the lower part of the cylinder (1); a fixed block (3) capable of moving axially along the cylinder (1) is arranged inside the cylinder (1); a swirl blade (4) driving the fixed block (3) to rotate is arranged on the fixed block (3); a slide rod (5) is arranged inside the cylinder (1); at least one end of the slide rod (5) is fixed on the cylinder (1); the fixed block (3) is sleeved on the slide rod (5); one end of the slide rod (5) is fixed on the cylinder (1); the other end is provided with a limit block for preventing the fixed block (3) from falling off; a collecting cover (6) is arranged at the lower end of the cylinder (1); the air outlet of the air inlet pipe (2) is located inside the collecting cover (6); a liquid phase channel is arranged between the collecting cover (6) and the air outlet; at least one sudden change section (8) is arranged on the cylinder (1) around the fixed block (3); the inner diameters of the cylinder (1) on both sides of the sudden change section (8) are different.

2. The liftable rotary oscillating aerator according to claim 1, characterized in that: The cross-section of the fixing block (3) gradually increases in a direction away from the air inlet pipe (2).

3. The liftable rotary oscillating aerator according to claim 1, characterized in that: The swirl blades (4) are provided in more than two groups and are arranged in sequence along the slide bar (5).

4. The liftable rotary oscillating aerator according to claim 3 is characterized in that: Each of the fixing blocks (3) is provided with a corresponding elastic member (7), and the elastic member (7) is provided on a side of the corresponding fixing block (3) away from the air inlet pipe (2).

5. The liftable rotary oscillating aerator according to claim 3, characterized in that: Each group of swirl blades (4) is provided with a corresponding fixing ring, and each of the swirl blades (4) is fixed to the corresponding fixing ring.

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