Efficient stirring device for bioreactor

Abstract

An efficient stirring device for a bioreactor comprises a biological reaction shell, a first connecting shaft connected to the biological reaction shell, a plurality of stirring blades connected to the first connecting shaft, a first rotating motor used for driving the first connecting shaft to rotate, a material pushing assembly connected to the biological reaction shell and a controller. Each material pushing assembly comprises a connecting rod connected to the biological reaction shell in a sliding mode, a pushing plate connected to the connecting rod and a first hydraulic air cylinder used for driving the pushing plate to move in the horizontal direction, the movement direction of the pushing plate is parallel to the axis direction of the biological reaction shell, and the number of the material pushing assemblies is two; the two material pushing assemblies are symmetrically arranged with the center shaft of the biological reaction shell as the axis, a containing cavity is formed in the biological reaction shell, the first connecting shaft, the stirring blades and the pushing plate are all located in the containing cavity, the bottom of the pushing plate makes contact with the bottom of the containing cavity, and the controller is electrically connected with the first rotating motor and the first hydraulic air cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment equipment, in particular to an efficient stirring device for a bioreactor. Background Art

[0002] The leachate in a garbage treatment plant needs to be treated as sewage. Usually, a membrane bioreactor in a membrane bioreaction system is a new type of wastewater treatment system that organically combines membrane separation technology and biological treatment technology. It replaces the secondary sedimentation tank at the end of the traditional biological treatment technology with a membrane module, maintains a high activated sludge concentration in the bioreactor, and increases the organic load of biological treatment, thereby reducing the floor area of the sewage treatment facility. During the use of the existing membrane bioreactor, there are hard and large impurities inside, which are likely to damage the membrane bioreactor and reduce its filtration effect. In addition, the contact area between the biological particles in the reactor and the sewage is small, and its sewage filtration effect is poor. It often needs to react for a long time before entering the next stage, resulting in a reduction in sewage treatment efficiency. In the prior art, a stirring device is also provided in the bioreactor. However, the existing stirring device has the following problems: the stirring efficiency is low, and it cannot fully stir the settled biological particles and sewage. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides an efficient stirring device for a bioreactor with a long service life, high stirring efficiency, and capable of ensuring full contact between sewage and biological particles.

[0004] Technical solution of the utility model: An efficient stirring device for a bioreactor, comprising a bioreaction housing, a first connecting shaft connected to the bioreaction housing, a plurality of stirring blades connected to the first connecting shaft, a first rotating motor for driving the first connecting shaft to rotate, a feeding component connected to the bioreaction housing, and a controller. The feeding component includes a connecting rod slidably connected to the bioreaction housing, a pushing plate connected to the connecting rod, and a first hydraulic cylinder for driving the pushing plate to move horizontally. The moving direction of the pushing plate is parallel to the axial direction of the bioreaction housing. The number of the feeding components is two, and the two feeding components are symmetrically arranged with the central axis of the bioreaction housing as the axis. A cavity is provided on the bioreaction housing. The first connecting shaft, the stirring blades, and the pushing plate are all located in the cavity. The bottom of the pushing plate is in contact with the bottom of the cavity. The controller is electrically connected to the first rotating motor and the first hydraulic cylinder respectively. With the above technical solution, when biological particles and sewage enter the cavity in the bioreaction housing respectively to form a mixed liquid, the controller controls the first rotating motor to drive the first connecting shaft to rotate. Since the stirring blades are connected to the first connecting shaft, the stirring blades will drive the mixed liquid to be fully stirred. In addition, the controller controls the first hydraulic cylinder to drive the connecting rod to move back and forth along the axial direction of the bioreaction housing. Since the bottom of the pushing plate is in contact with the bottom of the cavity, the biological particles settled at the bottom of the cavity will be pushed, thereby improving the fluidity of the mixed liquid. After the biological particles are pushed, due to the buoyancy of the mixed liquid, the biological particles will float up. Then, due to the centrifugal force generated when the stirring blades rotate, the biological particles will be driven to continue to contact with the sewage, thereby improving the reaction efficiency between the biological particles and the sewage, and the bioreactor realizes efficient stirring.

[0005] Further setting of the utility model: The stirring blade is provided with a connecting plate fixedly connected to the stirring blade and a reinforcing plate connected between the connecting plate and the stirring blade. The connecting plate is perpendicular to the stirring blade.

[0006] With the above technical solution, since the connecting plate is perpendicular to the stirring blade, when the stirring blade rotates with the first connecting shaft, the connecting plate will also rotate accordingly. The connecting plate can increase the contact area between the whole stirring blade and the mixed liquid, further improving the stirring efficiency. The function of the reinforcing plate is to improve the overall strength of the stirring blade and the connecting plate, avoiding the fracture of the reinforcing plate or the stirring blade during use, and thus improving the service life of the equipment.

[0007] Further setting of the utility model: The stirring blade is provided with a plurality of first notch grooves. The first notch grooves on each stirring blade are evenly arranged in two columns, and the two columns of first notch grooves are staggered.

[0008] With the above technical solution, since a number of first notch grooves are provided on the stirring blade and two columns of first notch grooves are arranged staggeredly, the contact area between the stirring blade and the mixed liquid can be further increased, thereby further improving the stirring efficiency.

[0009] A further setting of the present utility model: the pushing plate is arc-shaped, the movement track of the pushing plate does not coincide with the movement track of the stirring blade, and a number of second notch grooves evenly distributed on the pushing plate are provided on one side of the pushing plate close to the stirring blade.

[0010] With the above technical solution, since the pushing plate is arc-shaped and the movement track of the pushing plate does not coincide with the movement track of the stirring blade, the contact area between the pushing plate and the mixed liquid can be increased, thereby improving the lifting of the biological particles settled at the bottom of the cavity. In addition, since a number of second notch grooves evenly distributed on the pushing plate are provided on one side of the pushing plate close to the stirring blade, the contact area between the pushing plate and the mixed liquid can be further increased.

[0011] A further setting of the present utility model: the connecting rod includes a first connecting rod and a second connecting rod. The first connecting rod is connected to the first hydraulic cylinder, the second connecting rod is connected to the pushing plate, two reinforcing ribs are provided on the connecting rod, the reinforcing ribs are connected between the first connecting rod and the second connecting rod, and the two reinforcing ribs are symmetrically arranged.

[0012] With the above technical solution, since the reinforcing ribs are connected between the first connecting rod and the second connecting rod and the two reinforcing ribs are symmetrically arranged, the overall strength of the connecting rod can be improved, preventing the resistance received during the movement of the pushing plate from being transmitted to the connecting rod, resulting in the fracture of the connecting rod, and further improving the overall service life of the equipment. Description of the Drawings

[0013] Attached Figure 1 is a schematic structural diagram of an efficient stirring device for a bioreactor according to a specific embodiment of the present utility model.

[0014] Attached Figure 2 is a schematic structural diagram of the stirring blade in an efficient stirring device for a bioreactor according to a specific embodiment of the present utility model.

[0015] 1 - Bioreaction housing, 2 - First connecting shaft, 3 - Stirring blade, 4 - First rotating motor, 5 - Pushing component, 6 - Controller, 7 - Connecting rod, 8 - Pushing plate, 9 - First hydraulic cylinder, 10 - Cavity, 11 - Connecting plate, 12 - Reinforcing plate, 13 - First notch groove, 14 - Second notch groove, 15 - First connecting rod, 16 - Second connecting rod, 17 - Reinforcing rib. Detailed Embodiment

[0016] Such as Figure 1-2As shown in the figure, an efficient stirring device for a bioreactor includes a bioreaction housing 1, a first connecting shaft 2 connected to the bioreaction housing 1, a plurality of stirring blades 3 connected to the first connecting shaft 2, a first rotating motor 4 for driving the first connecting shaft 2 to rotate, a feeding component 5 connected to the bioreaction housing 1, and a controller 6. The feeding component 5 includes a connecting rod 7 slidably connected to the bioreaction housing 1, a pushing plate 8 connected to the connecting rod 7, and a first hydraulic cylinder 9 for driving the pushing plate 8 to move horizontally. The moving direction of the pushing plate 8 is parallel to the axial direction of the bioreaction housing 1. The number of the feeding components 5 is two, and the two feeding components 5 are symmetrically arranged with the central axis of the bioreaction housing 1 as the axis. A cavity 10 is provided on the bioreaction housing 1. The first connecting shaft 2, the stirring blades 3, and the pushing plate 8 are all located in the cavity 10. The bottom of the pushing plate 8 is in contact with the bottom of the cavity 10. The controller 6 is electrically connected to the first rotating motor 4 and the first hydraulic cylinder 9 respectively. When biological particles and sewage enter the cavity 10 in the bioreaction housing 1 respectively to form a mixed liquid, the controller 6 controls the first rotating motor 4 to drive the first connecting shaft 2 to rotate. Since the stirring blades 3 are connected to the first connecting shaft 2, the stirring blades 3 will drive the mixed liquid to be fully stirred. In addition, the controller 6 controls the first hydraulic cylinder 9 to drive the connecting rod 7 to move back and forth along the axial direction of the bioreaction housing 1. Since the bottom of the pushing plate 8 is in contact with the bottom of the cavity 10, the biological particles settled at the bottom of the cavity 10 will be pushed, thereby improving the fluidity of the mixed liquid. After the biological particles are pushed, due to the buoyancy of the mixed liquid, the biological particles will float up, and then, due to the centrifugal force generated when the stirring blades 3 rotate, the biological particles will be driven to continue to contact the sewage, thereby improving the reaction efficiency between the biological particles and the sewage, and the bioreactor realizes efficient stirring.

[0017] A connecting plate 11 fixedly connected to the stirring blade 3 and a reinforcing plate 12 connected between the connecting plate 11 and the stirring blade 3 are provided on the stirring blade 3. The connecting plate 11 is perpendicular to the stirring blade 3.

[0018] Since the connecting plate 11 is perpendicular to the stirring blade 3, when the stirring blade 3 rotates with the first connecting shaft 2, the connecting plate 11 will also rotate accordingly. The connecting plate 11 can increase the contact area between the overall stirring blade 3 and the mixed liquid, further improving the stirring efficiency. The role of the reinforcement plate is to enhance the overall strength of the stirring blade 3 and the connecting plate 11, preventing the reinforcement plate 12 or the stirring blade 3 from breaking during use, thereby increasing the service life of the equipment. A number of first notch grooves 13 are provided on the stirring blade 3, and the first notch grooves 13 on each stirring blade 3 are evenly arranged in two columns, and the two columns of first notch grooves 13 are staggered. Since a number of first notch grooves 13 are provided on the stirring blade 3 and the two columns of first notch grooves 13 are staggered, the contact area between the stirring blade 3 and the mixed liquid can be further increased, thereby further improving the stirring efficiency.

[0019] The push plate 8 is arc-shaped, the movement trajectory of the push plate 8 does not coincide with the movement trajectory of the stirring blade 3, and a number of second notch grooves 14 evenly distributed on the push plate 8 are provided on one side of the push plate 8 close to the stirring blade 3.

[0020] Since the push plate 8 is arc-shaped and the movement trajectory of the push plate 8 does not coincide with the movement trajectory of the stirring blade 3, the contact area between the push plate 8 and the mixed liquid can be increased, thereby improving the lifting of the biological particles settled at the bottom of the cavity 10. In addition, since a number of second notch grooves 14 evenly distributed on the push plate 8 are provided on one side of the push plate 8 close to the stirring blade 3, the contact area between the push plate 8 and the mixed liquid can be further increased.

[0021] The connecting rod 7 includes a first connecting rod 15 and a second connecting rod 16. The first connecting rod 15 is connected to the first hydraulic cylinder 9, the second connecting rod 16 is connected to the push plate 8, two reinforcing ribs 17 are provided on the connecting rod 7, and the reinforcing ribs 17 are connected between the first connecting rod 15 and the second connecting rod 16, and the two reinforcing ribs 17 are symmetrically arranged.

[0022] Since the reinforcing ribs 17 are connected between the first connecting rod 15 and the second connecting rod 16 and the two reinforcing ribs 17 are symmetrically arranged, the overall strength of the connecting rod 7 can be improved, preventing the resistance received during the movement of the push plate 8 from being transmitted to the connecting rod 7 and causing the connecting rod 7 to break, thereby increasing the overall service life of the equipment.

Claims

1. A high-efficiency stirring device for a bioreactor, characterized in that: The invention comprises a bioreactor shell, a first connecting shaft connected to the bioreactor shell, a plurality of stirring blades connected to the first connecting shaft, a first rotating motor for driving the first connecting shaft to rotate, a pushing assembly connected to the bioreactor shell, and a controller. The pushing assembly comprises a connecting rod slidably connected to the bioreactor shell, a pushing plate connected to the connecting rod, and a first hydraulic cylinder for driving the pushing plate to move in a horizontal direction. The moving direction of the pushing plate is parallel to the axial direction of the bioreactor shell. There are two pushing assemblies, which are symmetrically arranged with the central axis of the bioreactor shell as the axis. A cavity is provided on the bioreactor shell. The first connecting shaft, the stirring blades and the pushing plate are all located in the cavity. The bottom of the pushing plate contacts the bottom of the cavity. The controller is electrically connected to the first rotating motor and the first hydraulic cylinder respectively.

2. A high-efficiency stirring device for a bioreactor according to claim 1, characterized in that: The stirring blade is provided with a connecting plate fixedly connected to the stirring blade and a reinforcing plate connected between the connecting plate and the stirring blade, and the connecting plate is in a vertical state with the stirring blade.

3. A high-efficiency stirring device for a bioreactor according to claim 1, characterized in that: The stirring blade is provided with a plurality of first notch grooves, and the first notch grooves on each stirring blade are evenly arranged in two rows, and the two rows of first notch grooves are staggered.

4. A high-efficiency stirring device for a bioreactor according to claim 1, characterized in that: The push plate is in an arc shape, and the movement trajectory of the push plate does not overlap with the movement trajectory of the stirring blade. A plurality of second notch grooves evenly distributed on the push plate are provided on one side of the push plate close to the stirring blade.

5. A high-efficiency stirring device for a bioreactor according to claim 1, characterized in that: The connecting rod includes a first connecting rod and a second connecting rod, the first connecting rod is connected to the first hydraulic cylinder, the second connecting rod is connected to the push plate, and two reinforcing ribs are provided on the connecting rod, the reinforcing ribs are connected between the first connecting rod and the second connecting rod, and the two reinforcing ribs are symmetrically arranged.

Images