A stirring device and an aeration apparatus

Abstract

The utility model discloses a kind of stirring device and aeration equipment, stirring device includes: stirring shaft, stirring blade and driving motor, at least one stirring blade is fixedly connected with stirring shaft, and airflow passage is formed in stirring shaft and stirring blade, the air inlet of airflow passage is located on stirring shaft, and the aeration hole of airflow passage is located on stirring blade;Driving motor is fixedly connected with one end of stirring shaft to drive stirring shaft to rotate around its axis. Aeration equipment includes shell, gas supply device and stirring device, stirring shaft is arranged through shell and is rotatably connected with shell, stirring blade is located in shell, and driving motor is located outside shell. Gas supply device is used to supply gas to air inlet. Compared with prior art, the aeration equipment provided by the utility model integrates aeration device and stirring device together, and also carries out aeration while stirring. The impact of water flow makes the bubbles generated by aeration hole break into smaller bubbles, improving the aeration effect of aeration equipment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a stirring device and an aeration device. Background Technology

[0002] Pharmaceutical wastewater is a general term for all types of wastewater generated during the pharmaceutical production process. Because pharmaceutical processes involve a large number of raw materials, intermediates, solvents, and byproducts, pharmaceutical wastewater is characterized by complex composition, high pollutant concentrations, large fluctuations in water quality and quantity, and high treatment difficulty. The wastewater may contain dozens or even hundreds of organic pollutants, including salts, antibiotics, hormones, alkaloids, nitro compounds, benzene compounds, and organic solvents (such as DMF, DMSO, methanol, ethanol, acetone, and diethyl ether).

[0003] Aeration is a common wastewater treatment method that introduces air, oxygen, or other gases into wastewater to oxidize toxic and harmful substances, thereby achieving the treatment effect.

[0004] The conventional method involves using aeration discs to aerate the wastewater. The bubbles generated by the aeration discs come into contact with the substances to be oxidized in the wastewater and react. Some pharmaceutical wastewater has a high content of calcium and magnesium ions, which can easily clog conventional microporous aeration. Some pharmaceutical wastewater is difficult to degrade and has strict discharge standards, requiring the use of high MLSS biological processes such as MBR, where conventional microporous aeration is also prone to clogging. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a stirring device and aeration equipment to solve the technical problem that microporous aeration discs are prone to clogging in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides a stirring device, comprising: a stirring shaft, stirring blades, and a drive motor. At least one of the stirring blades is fixedly connected to the stirring shaft, and an airflow channel is formed inside the stirring shaft and the stirring blade. The air inlet of the airflow channel is located on the stirring shaft, and the aeration hole of the airflow channel is located on the stirring blade. The drive motor is fixedly connected to one end of the stirring shaft to drive the stirring shaft to rotate around its own axis.

[0007] In some embodiments, the stirring shaft has a plurality of air inlets circumferentially distributed on its side surface, and the air inlets are located on the side of the stirring shaft near the drive motor.

[0008] In some embodiments, the stirring blade is a mesh structure, including multiple horizontal and vertical bars that are fixedly connected to each other, the horizontal and vertical bars having interconnected airflow channels, and the surfaces of the horizontal and vertical bars having multiple aeration holes evenly distributed.

[0009] In some embodiments, one end of the stirring shaft is formed with a threaded hole, the drive shaft of the drive motor is formed with an external thread corresponding to the threaded hole, the drive motor and the stirring shaft are connected by a threaded engagement, and the rotation direction of the drive shaft of the drive motor is the same as the direction of thread tightening.

[0010] Secondly, this utility model also provides an aeration device, including a shell, an air supply device, and a stirring device. The stirring shaft passes through the shell and is rotatably connected to the shell. The stirring blades are located inside the shell, and the drive motor is located outside the shell. The air supply device is used to supply air into the air inlet.

[0011] In some embodiments, the outer casing forms an aeration chamber and an air supply chamber that are not interconnected. The stirring shaft passes through the aeration chamber and the air supply chamber in sequence and is rotatably connected to the outer casing via a bearing. The air inlet is located in the air supply chamber, and the air supply device is connected to the air supply chamber. The stirring blade is located in the aeration chamber.

[0012] In some embodiments, the stirring shaft is vertically arranged, with its lower end rotatably connected to the bottom surface of the aeration chamber via a thrust ball bearing, and its upper end passing through the aeration chamber and the air supply chamber in sequence and extending to the outside of the outer casing, and connected to the drive motor.

[0013] In some embodiments, a placement rack fixedly disposed on the housing is further included, and the drive motor is disposed on the placement rack.

[0014] In some embodiments, the housing further comprises an inlet and an outlet, the inlet communicating with the top of the aeration chamber and the outlet communicating with the bottom of the aeration chamber.

[0015] In some embodiments, the housing further forms an access port communicating with the top of the aeration chamber, and the access port is movably provided with an access door.

[0016] Compared with the prior art, the aeration device provided by this utility model integrates the aeration device and the stirring device together. The stirring device has a gas flow channel and aeration holes. The stirring device performs aeration while stirring. The water flow generated by stirring continuously impacts the aeration holes, avoiding blockage of the aeration holes. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the stirring device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the aeration device provided in an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To address the technical problem of easy clogging of microporous aeration discs, this invention provides a stirring device and aeration equipment that can unclog the aeration holes.

[0020] It should be noted that the aeration equipment described in this utility model is used for, but not limited to, treating pharmaceutical wastewater. For ease of explanation, this utility model only uses the application of the aeration equipment in treating pharmaceutical wastewater as an example. The principle of the aeration equipment in treating other types of wastewater is essentially the same as that in treating pharmaceutical wastewater, and will not be described in detail here.

[0021] Please see Figure 1 , Figure 1 This is a cross-sectional view of the stirring device provided in an embodiment of the present invention. The stirring device includes a stirring shaft 1, stirring blades 2, and a drive motor 3.

[0022] At least one stirring blade 2 is fixedly connected to the stirring shaft 1. An airflow channel 4 is formed inside the stirring shaft 1 and the stirring blade 2. The air inlet 41 of the airflow channel 4 is located on the stirring shaft 1, and the aeration hole 42 of the airflow channel 4 is located on the stirring blade 2.

[0023] The drive motor 3 is fixedly connected to one end of the stirring shaft 1 to drive the stirring shaft 1 to rotate around its own axis.

[0024] By integrating the aeration device and the stirring device, the stirring shaft 1 and the stirring blade 2 have gas flow channels, and the stirring blade 2 has aeration holes 42. Aeration is carried out at the same time as stirring. The water flow generated by stirring continuously impacts the aeration holes 42, preventing the aeration holes 42 from being blocked.

[0025] In some embodiments, the stirring shaft 1 has a plurality of air inlets 41 distributed circumferentially on its side surface, and the air inlets 41 are located on the side of the stirring shaft 1 near the drive motor 3.

[0026] In some embodiments, the stirring blade 2 is a mesh structure, including multiple horizontal bars 21 and vertical bars 22 that are fixedly connected to each other. The horizontal bars 21 and vertical bars 22 have interconnected airflow channels 4, and multiple aeration holes 42 are evenly distributed on the surface of the horizontal bars 21 and vertical bars 22.

[0027] In some embodiments, one end of the stirring shaft 1 has a threaded hole, and the drive shaft of the drive motor 3 has an external thread corresponding to the threaded hole. The drive motor 3 and the stirring shaft 1 are connected by a threaded connection, and the rotation direction of the drive shaft of the drive motor 3 is the same as the direction of thread tightening. This ensures that the stirring shaft 1 becomes tighter as it rotates, preventing it from loosening. In other embodiments, the drive shaft of the drive motor 3 and the stirring shaft 1 can also be connected in other ways, such as a pin connection or a bolt connection, as long as a fixed connection effect can be achieved.

[0028] Please see Figure 2 , Figure 2 This is a schematic diagram of the aeration device provided in an embodiment of the present invention. The aeration device includes a shell 5, an air supply device 6, and a stirring device.

[0029] The stirring shaft 1 passes through the outer casing 5 and is rotatably connected to the outer casing 5. The stirring blade 2 is located inside the outer casing 5, and the drive motor 3 is located outside the outer casing 5. The air supply device 6 is used to supply air into the air inlet 41.

[0030] In some embodiments, the outer casing 5 has an aeration chamber 51 and an air supply chamber 52 that are not interconnected. The stirring shaft 1 passes through the aeration chamber 51 and the air supply chamber 52 in sequence and is rotatably connected to the outer casing 5 via a bearing 7. The air inlet 41 is located inside the air supply chamber 52, and the air supply device 6 is connected to the air supply chamber 52. The stirring blade 2 is located inside the aeration chamber 51.

[0031] The air supply device 6 can be an air pump, which drives air into the air supply chamber 52 and maintains a certain pressure within the chamber, causing the air to enter the mixing device and exit through the aeration hole 42. Simultaneously, the drive motor 3 rotates the mixing blades 2, performing both mixing and aeration. It should be noted that the bearing 7, due to the presence of lubricating oil, provides a certain degree of sealing. Even with minor air leakage, as long as the air supply power of the air supply device 6 is sufficient, the aeration function can still be achieved.

[0032] In some embodiments, the housing 5 is further formed with an inlet 53 and an outlet 54, the inlet 53 being connected to the top of the aeration chamber 51 and the outlet 54 being connected to the bottom of the aeration chamber 51, for connecting to external pipes and for inputting and outputting wastewater, respectively.

[0033] In some embodiments, the housing 5 also has an access port communicating with the top of the aeration chamber 51, and the access port is movably provided with an access door 7. Through the access door 7, personnel can enter the aeration chamber 51 to perform maintenance and cleaning.

[0034] In some embodiments, the stirring shaft 1 is vertically arranged, with its lower end rotatably connected to the bottom surface of the aeration chamber 51 via a thrust ball bearing 8, and its upper end passing through the aeration chamber 51 and the air supply chamber 52 in sequence and extending to the outside of the outer casing 5, and connected to the drive motor 3.

[0035] In some embodiments, the aeration device further includes a placement rack 9 fixedly mounted on the housing 5, and a drive motor 3 mounted on the placement rack 9.

[0036] During wastewater treatment, wastewater flows in through the inlet 53, and the drive motor 3 drives the stirring blades 2 to rotate, agitating the wastewater. Simultaneously, the air supply device 6 supplies air to the air supply chamber 52, and the gas is discharged through the airflow channel 4 and then through each aeration hole 42, aerating the wastewater. The water flow generated by the agitation breaks the air bubbles into smaller bubbles, improving the aeration effect. The water flow continuously impacts the aeration holes 42, preventing them from becoming clogged. In actual operation, the unclogging effect can be further improved by changing the rotation direction.

[0037] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A stirring device, characterized in that, include: Stirring shaft; A stirring blade, at least one of the stirring blades is fixedly connected to the stirring shaft, and an airflow channel is formed inside the stirring shaft and the stirring blade. The air inlet of the airflow channel is located on the stirring shaft, and the aeration hole of the airflow channel is located on the stirring blade. A drive motor is fixedly connected to one end of the stirring shaft to drive the stirring shaft to rotate around its own axis.

2. The stirring device according to claim 1, characterized in that, The stirring shaft has a plurality of air inlets circumferentially distributed on its side, and the air inlets are located on the side of the stirring shaft closer to the drive motor.

3. The stirring device according to claim 1, characterized in that, The stirring blade has a mesh structure, including multiple horizontal and vertical bars that are fixedly connected to each other. The horizontal and vertical bars have interconnected airflow channels, and multiple aeration holes are evenly distributed on the surface of the horizontal and vertical bars.

4. The stirring device according to claim 1, characterized in that, One end of the stirring shaft is formed with a threaded hole, and the drive shaft of the drive motor is formed with an external thread corresponding to the threaded hole. The drive motor and the stirring shaft are connected by a threaded engagement, and the rotation direction of the drive shaft of the drive motor is the same as the direction of thread tightening.

5. An aeration device, characterized in that, The device includes a housing, an air supply device, and a stirring device as described in any one of claims 1-4. The stirring shaft passes through the housing and is rotatably connected to the housing. The stirring blades are located inside the housing. The drive motor is located outside the housing. The air supply device is used to supply air into the air inlet.

6. The aeration device according to claim 5, characterized in that, The outer shell has an aeration chamber and an air supply chamber that are not interconnected. The stirring shaft passes through the aeration chamber and the air supply chamber in sequence and is rotatably connected to the outer shell through a bearing. The air inlet is located in the air supply chamber, and the air supply device is connected to the air supply chamber. The stirring blades are located inside the aeration chamber.

7. The aeration device according to claim 6, characterized in that, The stirring shaft is vertically arranged, with its lower end rotatably connected to the bottom surface of the aeration chamber via a thrust ball bearing. Its upper end passes through the aeration chamber and the air supply chamber in sequence and extends to the outside of the outer shell, and is connected to the drive motor.

8. The aeration device according to claim 7, characterized in that, It also includes a placement rack fixedly mounted on the outer casing, and the drive motor is mounted on the placement rack.

9. The aeration device according to claim 6, characterized in that, The outer shell also has a liquid inlet and a liquid outlet, the liquid inlet being connected to the top of the aeration chamber and the liquid outlet being connected to the bottom of the aeration chamber.

10. The aeration device according to claim 6, characterized in that, The outer shell also has an inspection port that connects to the top of the aeration chamber, and the inspection port is movably equipped with an inspection door.

Images