Aeration device for sewage treatment

Abstract

The invention relates to an aeration device for sewage treatment, which comprises a box body and an aeration mechanism arranged in the box body, the bottom of the box body is provided with a box body, one side of the box body is provided with an air inlet pipe, the box body is internally provided with a vertical pipe of which the bottom end extends into the box body, the aeration mechanism is arranged at the bottom of the vertical pipe in the box body, and the aeration mechanism is arranged in the box body. A motor is arranged at the bottom of the box body, an output shaft of the motor extends into the box body and is connected with the vertical pipe through a [-shaped rod, a sleeve which sleeves the vertical pipe is arranged in the box body, a metal convex seat which is located above the vertical pipe is arranged at the top end of the sleeve, a cylindrical movable cavity is formed in the convex seat, and the movable cavity is communicated with the vertical pipe. A rotating shaft is arranged in the movable cavity, the tail end of the rotating shaft extends to the outer side of the convex seat and is provided with stirring blades, a plurality of grating plates are arranged on the rotating shaft in the movable cavity in the radial direction, mounting pipes are further arranged on the two sides of the top of the movable cavity, and the mounting pipes are connected with an aeration mechanism through telescopic connecting pipes. The device is simple in structure and convenient to use.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to an aeration device for sewage treatment. Background Art

[0002] An aeration tank is a device that uses the activated sludge method to treat sewage. Air or oxygen is continuously introduced into the aeration tank to provide the oxygen required by aerobic microorganisms, and the sewage is left in the aeration tank for a period of time so that the oxygen, activated sludge and sewage in the aeration tank are fully in contact, thereby producing floccules, which are convenient for precipitation in the subsequent steps of water treatment.

[0003] For example, in an aeration tank for sewage treatment with patent number CN117263407B, in the absence of other external forces, the sliding sleeve, connecting column and blades will slide and fall downward along the support rod under the action of gravity. In this process, the blades and the sewage will interact with each other to achieve automatic rotation of the blades, thereby achieving the stirring effect of the blades on the sewage in the tank body. However, in the specific implementation process, due to the influence of liquid buoyancy and the intermittent air flow sprayed by the aeration head toward the bottom of the baffle to exert an upward driving force on components such as the sleeve, connecting column and blades, it is difficult for the above-mentioned components to slide downward on the support rod, or they can only move downward slightly, which makes it impossible to effectively stir different upper and lower areas of the tank body to improve the processing effect. At the same time, in the absence of a power source, it is difficult to drive the blades to rotate due to the large resistance, relying only on the interaction between the fluctuating liquid and the blades. Summary of the invention

[0004] The purpose of the present invention is to provide an aeration device for sewage treatment.

[0005] The technical problem of the present invention is mainly solved by the following technical solutions:

[0006] An aeration device for sewage treatment includes a box body and an aeration mechanism arranged in the box body:

[0007] A box body is provided at the bottom of the box. One side of the box body is provided with an air inlet pipe, and a vertical pipe is arranged in the box body with its bottom end extending into the box body. The aeration mechanism is arranged at the bottom of the vertical pipe in the box body. The bottom of the box body is provided with a motor, and the output shaft of the motor extends into the box body and is connected to the vertical pipe through a C-shaped rod. A sleeve is arranged in the box body and sleeved on the vertical pipe. The top of the sleeve is provided with a metal convex seat located above the vertical pipe. A cylindrical movable cavity is arranged in the convex seat, and the bottom of the movable cavity is communicated with the inner top of the sleeve. A rotating shaft coaxial with the movable cavity is arranged in the movable cavity, and the end of the rotating shaft extends to the outside of the convex seat and is provided with stirring blades. A plurality of grid plates are radially arranged on the rotating shaft in the movable cavity, and mounting pipes are arranged on both sides of the top of the movable cavity;

[0008] The aeration mechanism includes an aeration pipe arranged on the outer wall of the vertical pipe. The top of the aeration pipe is evenly provided with aeration heads. The mounting pipe is connected to the aeration pipe through a telescopic connecting pipe. A ring seat is arranged at the bottom of the box body. The end of the aeration pipe is fixedly connected to the inner side wall of the ring seat, and an internal gear ring is arranged on the top of the ring seat. A gear meshing with the internal gear ring is arranged on the internal gear ring. A lead screw is arranged on the top of the gear, and the lead screw is fixed on the inner wall of the box body through a mounting rod. A cross bar for the lead screw to pass through is suspended in the box body. The end of the cross bar is provided with a mounting seat located above the convex seat, and an electromagnet is arranged at the bottom of the mounting seat.

[0009] Preferably, the cross section of the vertical pipe is polygonal, and the size of the inner opening of the sleeve is adapted to the size of the vertical pipe. A guiding block with a right-angled triangular cross section is arranged on one side of the inner top of the vertical pipe, and the inclined surface of the guiding block is located at the lower part.

[0010] Preferably, one end of the cross bar is provided with a slider, and a chute for accommodating the slider is vertically arranged on the inner side wall of the box body. A screw tube screwed with the lead screw is also arranged on the cross bar.

[0011] Preferably, a rolling bearing for fixing the lead screw is arranged on the mounting rod.

[0012] Preferably, the box body is in a barrel-shaped structure. An arc-shaped groove is correspondingly arranged on the inner side wall of the box body and the outer arc wall of the ring seat, and a plurality of ball bearings are arranged in the two arc-shaped grooves.

[0013] Preferably, the connecting pipe is of a metal telescopic pipe structure.

[0014] The beneficial effects of the present invention are as follows: By introducing gas to blow the baffle in the movable cavity and driving the stirring blades to rotate through the rotating shaft, so as to stir the liquid in the box body. At the same time, the gas is recovered through the installation pipe and the connecting pipe and introduced into the aeration mechanism to carry out aeration work on the liquid in the box body. When the gas is introduced into the movable cavity, it can exert an upward thrust on the convex seat to drive it and the stirring blades to move upward. Under the influence of the rotation of the vertical pipe, the sleeve and the convex seat driven by the motor, the orientation of the stirring blades can be changed, so that the stirring blades can stir the liquid at different upper and lower regions and different orientation positions in the box body while moving upward. When the motor rotates in reverse, the screw rod rotating in the screw pipe can indirectly drive the cross bar to drive the mounting seat and the electromagnet to move downward, and then drive the convex seat and the stirring blades to move downward, so as to repeatedly stir the liquid at different upper and lower regions and different orientation positions in the box body. Compared with the prior art, without adding new mechanical equipment, the power generated by recovering gas and a set of motors is used to drive the stirring blades to rotate and move up and down, which can stir the liquid in the box body充分 while saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a cross-sectional view of the convex seat in the side view direction of the present invention;

[0017] Figure 3 is Figure 1 an enlarged view of part A in

[0018] In the figure: 1, box body; 2, aeration mechanism; 201, aeration pipe; 202, aeration head; 3, box; 4, inlet pipe; 5, vertical pipe; 6, motor; 7, U-shaped rod; 8, sleeve; 9, convex seat; 10, movable cavity; 11, rotating shaft; 12, stirring blade; 13, grid plate; 14, installation pipe; 15, connecting pipe; 16, annular seat; 17, internal gear ring; 18, gear; 19, screw rod; 20, installation rod; 21, cross bar; 22, mounting seat; 23, electromagnet; 24, guiding block; 25, slider; 26, screw pipe; 27, ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, through embodiments and in combination with the attached Figure 1-3 , the technical solutions of the present invention will be further specifically described.

[0020] An aeration device for sewage treatment includes a box body 1 and an aeration mechanism 2 arranged in the box body 1:

[0021] A box body 1 is provided with a box 3 at the bottom. One side of the box 3 is provided with an air inlet pipe 4, and a vertical pipe 5 with its bottom end extending into the box 3 is arranged in the box body 1. The aeration mechanism 2 is arranged on the bottom of the vertical pipe 5 in the box body 1. The bottom of the box 3 is provided with a motor 6. The output shaft of the motor 6 extends into the box 3 and is connected with the vertical pipe 5 through a U-shaped rod 7. A sleeve 8 sleeved on the vertical pipe 5 is arranged in the box body 1. The top of the sleeve 8 is provided with a metal convex seat 9 located above the vertical pipe 5. A cylindrical moving cavity 10 is arranged in the convex seat 9. The bottom of the moving cavity 10 is communicated with the inner top of the sleeve 8. A rotating shaft 11 coaxially arranged with the moving cavity 10 is arranged in the moving cavity 10. The end of the rotating shaft 11 extends to the outside of the convex seat 9 and is provided with stirring blades 12. A plurality of grid plates 13 are radially arranged on the rotating shaft 11 in the moving cavity 10. Installation pipes 14 are also arranged on both sides of the top of the moving cavity 10.

[0022] The aeration mechanism 2 includes an aeration pipe 201 arranged on the outer wall of the vertical pipe 5. Aeration heads 202 are evenly arranged on the top of the aeration pipe 201. The installation pipe 14 is connected with the aeration pipe 201 through a telescopic connecting pipe 15. The connecting pipe 15 is of a metal telescopic pipe structure. A ring seat 16 is arranged at the bottom of the box body 1. The end of the aeration pipe 201 is fixedly connected with the inner side wall of the ring seat 16. An internal gear ring 17 is arranged on the top of the ring seat 16. A gear 18 meshing with the internal gear ring 17 is arranged on the internal gear ring 17. A lead screw 19 is arranged on the top of the gear 18. The lead screw 19 is fixed on the inner wall of the box body 1 through a mounting rod 20. A rolling bearing for fixing the lead screw 19 is arranged on the mounting rod 20. A cross bar 21 for the lead screw 19 to pass through is also suspended in the box body 1. The end of the cross bar 21 is provided with a mounting seat 22 located above the convex seat 9. An electromagnet 23 is arranged at the bottom of the mounting seat 22.

[0023] As Figure 1 、 3 shown, the cross section of the vertical pipe 5 is polygonal. The size of the inner opening of the sleeve 8 is adapted to the size of the vertical pipe 5, so that when the vertical pipe 5 rotates, it will drive the sleeve 8 to rotate together, preventing the sleeve 8 from slipping on the vertical pipe 5 and causing the two not to rotate together. A guiding block 24 with a right triangle cross section is arranged on one side of the inner top of the vertical pipe 5. The inclined surface of the guiding block 24 is located at the lower part. The air flow in the vertical pipe 5 is guided by the guiding block 24 to blow into one side of the moving cavity 10 and blow the grid plate 13 to drive the rotating shaft 11 to rotate. The reduced opening at the top of the vertical pipe 5 can increase the gas pressure to facilitate better blowing of the grid plate 13.

[0024] As Figure 1As shown, a slider 25 is provided at one end of the cross bar 21. A chute for accommodating the slider 25 is vertically provided on the inner side wall of the box body 1. A screw tube 26 screwed to the lead screw 19 is also provided on the cross bar 21. When the lead screw 19 rotates in the screw tube 26 to drive the cross bar 21 to move up and down, the cross bar 21 will drive the slider 25 to slide up and down in the chute. The cross bar 21 and the screw tube 26 are prevented from rotating together with the lead screw 19 by the way that the side wall of the chute catches the slider 25.

[0025] As Figure 1 shown, the box body 1 has a barrel-shaped structure. A circle of arc-shaped grooves are correspondingly provided on the inner side wall of the box body 1 and the outer arc wall of the annular seat 16, and a number of balls 27 are provided in the two groups of arc-shaped grooves. When the motor 6 drives the aeration pipe 201 to rotate through the C-shaped rod 7 and the vertical pipe 5, it will drive the annular seat 16 to rotate together. At this time, the arc-shaped groove on the annular seat 16 can slide on the balls 27. In this way, the stability of the annular seat 16 and the aeration pipe 201 is improved, and it is also beneficial to its rotation.

[0026] The usage method of the present invention: Inject gas into the box body 3 through the air inlet pipe 4 and flow into the vertical pipe 5. Then the gas flows into the movable cavity 10 to blow the grid plate 13 to drive the rotating shaft 11 to rotate. Finally, the gas is discharged through the installation pipe 14. When the rotating shaft 11 rotates, it will drive the stirring blades 12 to rotate to stir the liquid in the box body 1;

[0027] The gas on the installation pipe 14 is introduced into the aeration pipe 201 through the connecting pipe 15 and sprayed out by a number of aeration heads 202 to perform aeration work in the box body 1;

[0028] During the above process, the motor 6 can be used to drive the C-shaped rod 7 to drive the vertical pipe 5, the aeration pipe 201 and the aeration head 202 to rotate, realizing the change of the aeration position of the aeration head 202, avoiding the aeration operation of the aeration head 202 at a fixed position, effectively improving the aeration effect. At the same time, the rotating aeration pipe 201 will drive the gear 18 to rotate through the annular seat 16 and the internal gear ring 17, and the gear 18 drives the lead screw 19 to rotate in the screw pipe 26 to drive the cross bar 21 to move upward. At this time, the cross bar 21 drives the mounting seat 22 and the electromagnet 23 to move upward, so that components such as the electromagnet 23 will not abut against components such as the convex seat 9 and affect its upward movement. On this premise, when the air flow in the vertical pipe 5 blows into the movable cavity 10 to drive the grid plate 13 to rotate, it will also exert an upward thrust on the convex seat 9. As a result, the convex seat 9 moves upward to drive the sleeve 8 to slowly move upward on the vertical pipe 5, and at the same time drives components such as the stirring blades 12 to move upward, so that the stirring blades 12 rotated by the gas can stir different areas at the upper and lower parts in the box body 1. When the convex seat 9 moves upward, it will stretch the connecting pipe 15 by pulling through the mounting pipe 14 to prevent the connecting pipe 15 from affecting the upward movement of the above components. And during the upward movement, components such as the stirring blades 12 will also change their orientations under the influence of the rotating vertical pipe 5, so that they can stir the liquid at different orientations in the box body 1 during the upward movement;

[0029] Of course, in order to prevent the air flow introduced into the vertical pipe 5 from not being able to blow the components such as the convex seat 9 upward well, when the cross bar 21, the mounting seat 22 and the electromagnet 23 move upward, the electromagnet 23 works to magnetically connect with the convex seat 9 or exert an upward pulling suction force on it. Then, with the driving force of the gas on the convex seat 9, when the components such as the electromagnet 23 move upward, they can smoothly pull the convex seat 9, the sleeve 8 and the stirring blades 12 to move upward. During this process, the vertical pipe 5 can still drive the sleeve 8 and the convex seat 9 and other components to rotate and the convex seat 9 and the electromagnet 23 do not separate, but the convex seat 9 rotates at the bottom of the electromagnet 23, or the two separate but the electromagnet 23 still exerts an upward pulling force on the convex seat 9. When the above components move upward to a certain extent, the motor 6 reverses. At this time, the lead screw 19 can drive the powered-off electromagnet 23 to move downward and squeeze the convex seat 9 through the screw pipe 26, the cross bar 21 and the mounting seat 22, thereby forcing the convex seat 9, the sleeve 8 and the stirring blades 12 to move downward. When they move downward, they can continue to stir the liquid at different orientations and different height positions in the box body 1.

[0030] The above has described the present invention in detail, but the above content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An aeration device for sewage treatment, comprising a box body and an aeration mechanism arranged inside the box body, characterized in that: A box body is arranged at the bottom of the box body. An air inlet pipe is arranged on one side of the box body. A vertical pipe with its bottom end extending into the box body is arranged inside the box body. The aeration mechanism is arranged on the bottom of the vertical pipe inside the box body. A motor is arranged at the bottom of the box body. The output shaft of the motor extends into the box body and is connected to the vertical pipe through a U-shaped rod. A sleeve is arranged inside the box body and sleeved on the vertical pipe. A metal convex seat is arranged above the vertical pipe at the top of the sleeve. A cylindrical movable cavity is arranged inside the convex seat. The bottom of the movable cavity is communicated with the inner top of the sleeve. A rotating shaft coaxial with the movable cavity is arranged inside the movable cavity. The end of the rotating shaft extends outside the convex seat and is provided with stirring blades. A plurality of grid plates are radially arranged on the rotating shaft inside the movable cavity. Installation pipes are also arranged on both sides at the top of the movable cavity. The aeration mechanism includes an aeration pipe arranged on the outer wall of the vertical pipe. Aeration heads are evenly arranged at the top of the aeration pipe. The installation pipe is connected to the aeration pipe through a telescopic connecting pipe. A ring seat is arranged at the bottom inside the box body. The end of the aeration pipe is fixedly connected to the inner side wall of the ring seat. An internal gear ring is arranged on the top of the ring seat. A gear meshing with the internal gear ring is arranged on the internal gear ring. A lead screw is arranged on the top of the gear. The lead screw is fixed on the inner wall of the box body through a mounting rod. A cross bar for the lead screw to pass through is also suspended inside the box body. The end of the cross bar is provided with a mounting seat above the convex seat. An electromagnet is arranged at the bottom of the mounting seat.

2. The aeration device for sewage treatment according to claim 1, characterized in that: The cross section of the vertical pipe is polygonal. The size of the inner opening of the sleeve is adapted to the size of the vertical pipe. A guiding block with a right-angled triangular cross section is arranged on one side of the inner top of the vertical pipe. The inclined surface of the guiding block is located at the lower part.

3. The aeration device for sewage treatment according to claim 1, characterized in that: One end of the cross bar is provided with a slider. A chute for accommodating the slider is vertically arranged on the inner side wall of the box body. A screw pipe screwed with the lead screw is also arranged on the cross bar.

4. The aeration device for sewage treatment according to claim 1, characterized in that: A rolling bearing for fixing the lead screw is arranged on the mounting rod.

5. The aeration device for sewage treatment according to claim 1, characterized in that: The box body is in a barrel-shaped structure. An arc-shaped groove is correspondingly arranged on the inner side wall of the box body and the outer arc wall of the ring seat in a circle. A number of balls are arranged in the two groups of arc-shaped grooves.

6. The aeration device for sewage treatment according to claim 1, characterized in that: The connecting pipe is of a metal telescopic pipe structure.

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