Jet Aerator

Abstract

The present invention discloses a jet aerator, including a cylinder and an air inlet pipe arranged at one end of the cylinder, a gas branch pipe is arranged on the air inlet pipe, an air inlet is arranged on the side wall of the cylinder, and the air outlet end of the gas branch pipe is connected to the air inlet. The air inlet pipe of the jet aerator in the present application is connected to an air compressor or an air source, and the gas enters the cylinder from the air inlet pipe, so that negative pressure is generated around the air inlet of the air inlet pipe, and the liquid is brought into the cylinder for mixing. A gas branch pipe is also arranged on the air inlet pipe in this embodiment, and the gas branch pipe passes through the side wall of the cylinder and is connected to the cylinder, so that the gas-liquid mixture entering the cylinder is mixed with the gas in the gas branch pipe again, thereby improving the mixing effect.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, and in particular to a jet 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, the oxygen in the gas phase is transferred to dissolved oxygen in the liquid phase, which is beneficial to the oxidative decomposition of impurities in the sewage. In order to increase the dissolved oxygen in the liquid phase, the degree of dispersion of the gas phase in the liquid phase is particularly important, which is also an important indicator for evaluating the performance of jet aerators. Summary of the invention

[0003] The object of the present invention is to provide a jet aerator to improve the dispersion degree of gas phase in liquid phase.

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

[0005] A jet aerator comprises a cylinder and an air inlet pipe arranged at one end of the cylinder, the air inlet pipe is provided with a gas branch pipe, the side wall of the cylinder is provided with an air inlet, and the air outlet end of the gas branch pipe is connected to the air inlet.

[0006] Preferably, a collecting cover is provided at one 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.

[0007] Preferably, the cylinder comprises a throat and a diffuser which are sequentially connected to the collecting cover, a fixed block which can move axially along the diffuser is arranged in the diffuser, and a swirl blade which drives the fixed block to rotate is arranged on the fixed block.

[0008] Preferably, a slide rod is provided in the cylinder 1, at least one end of the slide rod is fixed on the cylinder, and the fixing block is sleeved on the slide rod.

[0009] 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.

[0010] Preferably, an elastic member is provided on a side of the fixing block away from the air inlet pipe.

[0011] 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.

[0012] Preferably, a gas breaking piece is provided on the surface of the fixing block facing the air inlet pipe.

[0013] Preferably, the cross-section of the fixing block gradually increases in a direction away from the air inlet pipe.

[0014] Preferably, there are more than two swirl blades, and the two or more swirl blades are connected by a fixing ring.

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

[0016] The jet aerator in the present application is connected to an air compressor or an air source, and the gas enters the cylinder from the air inlet pipe, so that negative pressure is generated around the air inlet of the air inlet pipe, and the liquid is brought into the cylinder for mixing. A gas branch pipe is also provided on the air inlet pipe in this embodiment, and the gas branch pipe passes through the side wall of the cylinder and is connected to the cylinder, so that the gas-liquid mixture entering the cylinder is mixed with the gas in the gas branch pipe again, thereby improving the mixing effect.

[0017] The cross section of the fixed block increases gradually, and can be matched with the setting of the sudden change cross section, so that when the gas flow rate remains stable within a range, the fixed block can also vibrate continuously. Compared with adjusting the gas flow rate, this saves more energy, 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of an optimized structure of the present invention.

[0020] Figure 3 It is a schematic diagram of another optimized structure of the present invention. DETAILED DESCRIPTION

[0021] 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.

[0022] The present embodiment provides a jet aerator, comprising a cylinder 1 and an air inlet pipe 2 arranged at one end of the cylinder 1, the air inlet pipe is provided with a gas branch pipe 21, the side wall of the cylinder is provided with an air inlet, and the air outlet end of the gas branch pipe is connected to the air inlet.

[0023] The jet aerator in this embodiment is connected to the air compressor or air source through the air inlet pipe, and the gas enters the cylinder from the air inlet pipe, so that negative pressure is generated around the air inlet of the air inlet pipe, and the liquid is brought into the cylinder for mixing. A gas branch pipe is also provided on the air inlet pipe in this embodiment, and the gas branch pipe passes through the side wall of the cylinder and is connected to the cylinder, so that the gas-liquid mixture entering the cylinder is mixed with the gas in the gas branch pipe again, thereby improving the mixing effect.

[0024] In this embodiment, a collecting cover 6 may be provided at one end of the cylinder 1, the gas 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 gas outlet.

[0025] During the intake process of the intake pipe 2, negative pressure will be generated near the intake port. The setting of the collecting cover 6 is conducive to the liquid being concentrated in the collecting cover 6 and entering the cylinder 1 along with the intake air.

[0026] The cylinder 1 in this embodiment may include a throat and a diffuser connected to the collecting cover in sequence, the gas branch pipe is connected to the diffuser, a fixed block 3 capable of moving along the axial direction of the diffuser is arranged in the diffuser, and a swirl blade 4 driving the fixed block 3 to rotate is arranged on the fixed block 3, such as Figure 2 shown.

[0027] When the jet aerator in this embodiment is used, 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.

[0028] 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 .

[0029] In this embodiment, a slide rod 5 may be disposed in the cylinder 1 , at least one end of the slide rod 5 is fixed on the cylinder 1 , and the fixing block 3 is sleeved on the slide rod 5 .

[0030] The slide bar 5 in this embodiment can be arranged along the axial direction of the cylinder 1, or can be slightly inclined, as long as it can limit the fixed block and does not hinder the swirl blades from driving the fixed block to rotate.

[0031] In this embodiment, one end of the slide rod 5 is fixed on the cylinder 1, and the other end is provided with a limit block to prevent the fixing block 3 from falling off.

[0032] 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.

[0033] In this embodiment, an elastic member 7 is provided on the side of the fixing block 3 away from the air inlet pipe 2. Figure 2 shown.

[0034] In this embodiment, an elastic member is provided, and the gas in the intake pipe 2 can be adjusted to keep changing by adjusting the intake volume of the intake pipe 2, so that the fixed block 3 is continuously moved along the cylinder under the combined action of the thrust of the gas and the reverse elastic force of the elastic member on the fixed block. During the movement, the impact force of the gas-liquid mixture on the fixed block 3 and the swirl blade 4 is changed, which is more conducive to the dispersion of the gas in the liquid phase compared to not providing the fixed block 3 and the swirl blade 4. In this application, the fixed block 3 can move 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 component in the axial direction.

[0035] In addition, 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 thrust will be applied to the fixed block 3, causing the fixed block 3 to move quickly, which may collide with the fixed structure or the stopper at the end of the slide bar 5. Long-term, multiple, and strong collisions may damage the fixed block 3 or the connecting structure or the stopper, shortening the life of the device. Therefore, the elastic member 7 can also reduce the probability of device damage.

[0036] Although the radial arrangement of the slide bar 5 can also cause the gas to collide with the fixed block 3, which is beneficial to the dispersion of the gas in the liquid phase compared to not setting the fixed block 3, the fixed block 3 cannot slide or oscillate under the action of the gas, and the dispersion effect is not as good as that of the inclined arrangement 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.

[0037] In this embodiment, at least one sudden cross section 8 is provided on the cylinder 1 around the fixing block 3, and the inner diameters of the cylinder 1 on both sides of the sudden cross section 8 are different, such as Figure 3 shown.

[0038] 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, so that the flow rate of the fluid suddenly changes, and the thrust received by the vibration block suddenly changes, so that the speed of the vibration block changes. Among them, the inner diameter of the cylinder 1 is preferably increased and decreased alternately.

[0039] In this embodiment, a gas dispersing member 9 is provided on the surface of the fixing block 3 facing the air inlet pipe 2 .

[0040] 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.

[0041] In this embodiment, the cross-section of the fixing block 3 may gradually increase in the direction away from the air inlet pipe 2 .

[0042] 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.

[0043] In this embodiment, there are more than two swirl blades 4, and the two or more swirl blades 4 are connected by a fixing ring. The swirl blades can be arranged in multiple groups along the slide bar, or there can be only one group, each group of swirl blades 4 is correspondingly provided with a fixing ring, and each swirl blade 4 is fixed to the corresponding fixing ring.

[0044] 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.

[0045] 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 jet aerator, comprising a cylinder (1) and an air inlet pipe (2) arranged at one end of the cylinder (1), characterized in that: The air inlet pipe is provided with a gas branch pipe (21), the side wall of the cylinder is provided with an air inlet, and the air outlet end of the gas branch pipe is connected to the air inlet; a collecting cover (6) is provided at one 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; the cylinder (1) comprises a throat pipe and a diffuser pipe which are connected to the collecting cover in sequence, a fixed block (3) which can move along the axial direction of the diffuser is provided in the diffuser, and a rotating element which drives the fixed block (3) to rotate is provided on the fixed block (3). Swirl blades (4); a slide bar (5) is arranged inside the cylinder (1), at least one end of the slide bar (5) is fixed on the cylinder (1), and the fixed block (3) is sleeved on the slide bar (5); one end of the slide bar (5) is fixed on the cylinder (1), and the other end is provided with a limit block for preventing the fixed block (3) from falling off; an elastic member (7) is arranged on the side of the fixed block (3) away from the air inlet pipe (2); at least one sudden change section (8) is arranged on the cylinder (1) around the fixed block (3), and the inner diameters of the cylinder (1) on both sides of the sudden change section (8) are different.

2. The jet aerator according to claim 1, characterized in that: A gas-dispersing member (9) is provided on the surface of the fixing block (3) facing the air inlet pipe (2).

3. The jet 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).

Images