Aeration stirring device for water body

Abstract

The utility model discloses a water body aeration stirring device which comprises a plurality of shaft pipes, the shaft pipes are rotationally installed at the bottom of a sewage pool through an installation frame, one end of each shaft pipe is a through opening, the other end of each shaft pipe is plugged, spiral blades are arranged on the outer pipe wall of each shaft pipe, a plurality of air outlet connectors communicated with the interiors of the shaft pipes are further arranged on the outer pipe wall of each shaft pipe, and aeration heads are installed on the air outlet connectors. A driving part is arranged on the outer pipe wall of the shaft pipe at the plugging end, the through opening end of the shaft pipe is further rotationally and hermetically connected with a rotating joint, the rotating joint is further connected with an air inlet pipe, the multiple shaft pipes are parallel to one another and located in the same plane, and the spiral directions of the spiral blades on the adjacent shaft pipes are opposite. The adjacent shaft pipes are in mutual driving connection through driving parts so as to rotate in the same direction, the water body aeration stirring device further comprises a driving mechanism, and the driving mechanism is used for driving the driving parts on the shaft pipes located on the outermost edges so as to drive the shaft pipes to rotate. The device can prevent sludge from depositing during weak aeration and keep the sludge at the bottom suspended, so that the treatment requirement at the weak aeration stage is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a water body aeration stirring device. BACKGROUND

[0002] The water body aeration stirring device is the core equipment of the sewage treatment system, and realizes double functions through the aeration process: on the one hand, oxygen is injected into the water body to maintain the dissolved oxygen concentration and activate the metabolic activity of aerobic microorganisms, and on the other hand, the water flow disturbance formed by the rising of bubbles is used to complete the preliminary mixing and stirring.However, the fluid kinetic energy generated by simply relying on aeration has significant defects: the energy is rapidly attenuated during the rising of bubbles, the flow rate at the bottom of the pool body is insufficient, sludge is prone to deposit below the aeration equipment, and a treatment blind area is formed.

[0003] In order to make up for the deficiency of aeration stirring, a bottom-sinking type plug flow impeller is often added in engineering to strengthen the water body circulation through mechanical thrust.The scheme is stable in the strong aeration stage (high oxygen demand) and the non-aeration stage (anaerobic environment): the former realizes efficient mixing through the synergistic effect of aeration and the impeller, and the latter completely relies on the impeller to maintain sludge suspension.But in the weak aeration stage (such as the transition period of the denitrification process), the system faces double contradictions: the bubble disturbance generated by trace aeration is not enough to drive the water flow, and reducing the power of the impeller will lead to sharp reduction of the thrust, which is difficult to balance the process requirements of sludge suspension and low oxygen environment.

[0004] Therefore, a water body aeration stirring device is designed, which can prevent sludge deposition and maintain bottom sludge suspension during weak aeration to meet the treatment requirements in the weak aeration stage. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a water body aeration stirring device to solve the problems described in the background art.

[0006] The technical scheme of the utility model is implemented as follows:

[0007] The water body aeration stirring device comprises a plurality of hollow shaft pipes, a mounting frame is detachably mounted on the shaft pipes, the shaft pipes are rotationally mounted in the mounting frame so that the shaft pipes rotate with the central axis of the shaft pipes as the rotation axis, one end of the shaft pipe is a blocked end and the other end is an open end, a spiral blade is arranged on the outer pipe wall of the shaft pipe, a plurality of gas outlet joints communicating with the inside of the shaft pipe are arranged on the outer pipe wall of the shaft pipe, the gas outlet joints are spaced apart along the central axis direction of the shaft pipe, an aeration head is detachably mounted on the gas outlet joint, a driving component is arranged on the outer pipe wall of the blocked end of the shaft pipe, the open end of the shaft pipe is also rotationally and sealingly connected with a rotary joint, and an air inlet pipe is further connected to the rotary joint, the plurality of shaft pipes are arranged in parallel and in the same plane, the spiral directions of the spiral blades on the adjacent shaft pipes are opposite, the adjacent shaft pipes are also drivenly connected to each other by the driving components so as to rotate in the same direction, and the water body aeration stirring device further comprises a driving mechanism, which is used to drive the driving component on the shaft pipe at the most edge to drive the shaft pipe to rotate.

[0008] When the above scheme is used, the plurality of shaft pipes are mounted to the bottom of the sewage pool through the mounting frame, when the air inlet pipe is aerated, the gas enters the rotary joint through the air inlet pipe, then enters the shaft pipe, and is discharged through the gas outlet joint on the shaft pipe, and the gas is used to aerate the water body through the aeration head. When the driving mechanism is started, the driving mechanism drives the shaft pipe to rotate, the plurality of shaft pipes are drivenly connected to each other by the driving components and rotate in the same direction, the spiral blades on the shaft pipes continuously push the deposited sludge to move to one side in the rotating process, and are continuously stirred and lifted by the rotating gas outlet joint and the aeration pipe in the moving process, and the sludge is lifted to produce a suspension effect. At the same time, since the spiral directions of the spiral blades on the adjacent shaft pipes are opposite, one shaft pipe pushes the sludge in the range to one end of the sewage pool, and after being slightly accumulated, the sludge is pushed in the opposite direction by the spiral blades on the adjacent shaft pipe, so that most of the sludge is prevented from being accumulated at both ends of the sewage pool.

[0009] Although the device cannot suspend and aerate the sludge without dead angle in the weak aeration stage, it can ensure that most of the sludge is in the weak aeration condition, provides an effective and active technical means for sewage treatment, and improves the sewage treatment effect in the weak aeration stage.

[0010] Further technical solutions are that the driving component comprises a first sprocket and a second sprocket fixedly sleeved on the outer wall of the shaft pipe, and further comprises a transmission chain, the first sprocket or the second sprocket of the shaft pipe is drivenly connected to the first sprocket or the second sprocket of the adjacent shaft pipe through the transmission chain, and the driving mechanism is drivenly connected to the first sprocket or the second sprocket of the shaft pipe at the most edge.

[0011] Further technical solutions are that the driving mechanism comprises a motor, a main sprocket and a main chain, the main sprocket is fixed on the output shaft of the motor, and the main sprocket is connected with the first sprocket or the second sprocket of the shaft pipe at the edge through the main chain.

[0012] When the above scheme is used, the motor is arranged outside the sewage pool, and the motor is connected with the first sprocket or the second sprocket of the shaft pipe at the lower edge through the main sprocket and the main chain.

[0013] Further technical solutions are that the mounting frame comprises a front mounting frame and a rear mounting frame, and the front mounting frame and the rear mounting frame are arranged at the front end and the rear end of the spiral blade of the shaft pipe respectively.

[0014] When the above scheme is used, the front end and the rear end of the shaft pipe are fixed on the bottom of the sewage pool through the front mounting frame and the rear mounting frame.

[0015] Further technical solutions are that the distance between the spiral blades on adjacent shaft pipes is 0-5 cm.

[0016] The beneficial effects of the utility model lie in:

[0017] 1. Synergistic effect of aeration and mechanical stirring: the shaft pipe rotation drives the spiral blade to push sludge, and the aeration head releases bubbles to form double disturbance, so that the sludge is fully suspended under the action of rising bubbles, and the oxygen transfer efficiency in the weak aeration stage is improved.

[0018] 2. Anti-sludge accumulation design: the spiral blades of adjacent shaft pipes adopt opposite spiral directions to realize bidirectional sludge pushing, effectively avoid sludge accumulation at both ends of the pool body, and ensure uniform distribution and continuous treatment of sludge. DRAWINGS

[0019] Fig. 1 It is a top view schematic diagram (hidden driving mechanism) of the device;

[0020] Fig. 2 It is a front view schematic diagram of the device.

[0021] In the figure, 1 is a sewage pool, 2 is a front mounting frame, 3 is a rotary joint, 4 is an air inlet pipe, 5 is a spiral blade, 6 is an air outlet joint, 7 is an aeration head, 8 is a first sprocket, 9 is a second sprocket, 10 is a rear mounting frame, 11 is a shaft pipe, 12 is a motor, 13 is a main sprocket, 14 is a transmission chain, and 15 is a main chain. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the utility model, specific embodiments are provided below, and the utility model is further described in combination with the drawings.

[0023] Reference is made to Figs. 1-2A water aeration and stirring device includes multiple hollow shaft tubes 11, each shaft tube 11 is detachably mounted with a mounting frame, the shaft tube 11 is rotatably mounted in the mounting frame so that the shaft tube 11 rotates about the central axis of the shaft tube 11, one end of the shaft tube 11 is a sealing end and the other end is a through end, and the outer wall of the shaft tube 11 is provided with spiral blades 5.

[0024] Specifically, the mounting bracket includes a front mounting bracket 2 and a rear mounting bracket 10, which are respectively located at the front end and rear end of the spiral blade 5 of the shaft tube 11.

[0025] The outer wall of the shaft tube 11 is also provided with a plurality of air outlet joints 6 that connect to the inside of the shaft tube 11. The plurality of air outlet joints 6 are distributed at intervals along the central axis of the shaft tube 11, and an aeration head 7 is detachably installed on the air outlet joint 6.

[0026] Specifically, the aeration head 7 is screwed onto the air outlet connector 6.

[0027] The outer wall of the shaft tube 11 at the sealing end is provided with a driving component, and the port end of the shaft tube 11 is also rotatably sealed with a rotary joint 3, and an air inlet pipe 4 is also connected to the rotary joint 3.

[0028] Specifically, the drive components include a first sprocket 8, a second sprocket 9, and a drive chain 14.

[0029] Specifically, one end of the air intake pipe 4 extends upwards to the outside of the sewage tank 1.

[0030] Multiple shaft tubes 11 are arranged in parallel to each other and are located in the same plane. The spiral blades 5 on adjacent shaft tubes 11 have opposite spiral directions, and adjacent shaft tubes 11 are also driven to rotate in the same direction by a driving component.

[0031] Specifically, the first sprocket 8 or the second sprocket 9 of the shaft tube 11 is driven by the first sprocket 8 or the second sprocket 9 of the adjacent shaft tube 11 through the transmission chain 14.

[0032] The water aeration and mixing device also includes a drive mechanism, which drives the drive component on the outermost shaft tube 11 to rotate the shaft tube 11.

[0033] Specifically, the drive mechanism includes a motor 12, a main sprocket 13, and a main chain 15. The motor 12 is located at the top of the sewage tank 1, and the main sprocket 13 is fixed on the output shaft of the motor 12. The main sprocket 13 is driven by the first sprocket 8 or the second sprocket 9 of the outermost shaft tube 11 through the main chain 15.

[0034] Preferably, the distance between the helical blades 5 on adjacent shaft tubes 11 is 0 to 5 centimeters.

[0035] It is important to note that this device primarily addresses the issue of sludge suspension at the bottom during the weak aeration phase. In practical applications, this device also requires the use of a bottom-push impeller. The impeller's push direction can be perpendicular to the axis of the shaft tube 11, especially when positioned at both ends of the shaft tube 11. During the strong aeration phase, the push can effectively displace the small amount of sludge that accumulates at both ends of the shaft tube 11 due to the device's operation. The combined use of these two devices effectively prevents sludge deposition. The application technology of the bottom-push impeller is quite common in existing technologies and will not be described in detail here.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water aeration and stirring device, characterized in that: The device comprises multiple hollow shaft tubes, each detachably mounted with a mounting bracket. The shaft tubes are rotatably mounted in the mounting brackets, allowing them to rotate about their central axis. One end of each shaft tube is a sealed end, while the other end is an open end. The outer wall of each shaft tube is provided with helical blades and multiple air outlet joints connecting to the interior of the shaft tube. These air outlet joints are spaced apart along the central axis of the shaft tube, and aeration heads are detachably mounted on each air outlet joint. A driving component is provided on the outer wall of the sealed end of the shaft tube. The open end of the shaft tube is rotatably and sealingly connected to a rotary joint, which is connected to an air inlet pipe. The multiple shaft tubes are arranged parallel to each other and are all in the same plane. The helical blades on adjacent shaft tubes have opposite helical directions, and adjacent shaft tubes are also driven by the driving component to rotate in the same direction. The water aeration and stirring device also includes a driving mechanism, which drives the driving component on the outermost shaft tube to rotate the shaft tube.

2. The water aeration and stirring device according to claim 1, characterized in that: The driving component includes a first sprocket and a second sprocket fixedly sleeved on the outer wall of the shaft tube, and also includes a transmission chain. The first sprocket or the second sprocket of the shaft tube is driven by the transmission chain to the first sprocket or the second sprocket of the adjacent shaft tube. The driving mechanism is driven by the first sprocket or the second sprocket of the shaft tube at the outermost edge.

3. The water aeration and stirring device according to claim 2, characterized in that: The drive mechanism includes a motor, a main sprocket, and a main chain. The main sprocket is fixed on the output shaft of the motor and is driven by the main chain to the first or second sprocket of the outermost shaft tube.

4. A water aeration and stirring device according to claim 1 or 3, characterized in that: The mounting bracket includes a front mounting bracket and a rear mounting bracket, which are respectively located at the front end and rear end of the helical blade of the shaft tube.

5. A water aeration and stirring device according to claim 1 or 3, characterized in that: The distance between the helical blades on adjacent shaft tubes is 0 to 5 centimeters.

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