CN103204580A - Flow-state controllable biological culture device and special agitation air cylinder thereof - Google Patents

Abstract

The invention relates to a biological cultivation device with controllable fluid state and its special stirring cylinder. The innovation point is that it includes an outer cylinder and an inner cylinder. The vertical driving mechanism A drives the lifting; the side wall of the outer cylinder is equipped with an aeration device; the inner cylinder is a special mixing cylinder driven by the motor B to rotate. The piston rod of the special mixing cylinder has two channels; the top end of the piston rod is equipped with a rotary joint B connected with the upper nozzle of the two channels, the lower nozzle of one of the two channels is located on the side of the rodless chamber, and the other channel The nozzle at the lower end of the piston is located on the side of the rod cavity; a feather key structure is arranged between the piston and the inner wall of the cylinder. Drive the outer cylinder and inner cylinder to rotate and lift through motors and cylinders, and combine the eccentric adjustment structure to adjust different eccentricities of the inner and outer cylinders. The rotation direction and speed can obtain flow patterns with different Reynolds numbers to achieve flow controllability Effect.

Description

A biological culture device with controllable fluid state and its special mixing cylinder

technical field

The invention relates to a biological cultivation device with controllable flow state, and also relates to a special stirring cylinder for realizing the controllable flow state of the biological cultivation device.

Background technique

Sewage treatment refers to the process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection , urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people.

In the aeration stage of sewage treatment, aeration can not only provide oxygen for microorganisms, but also play a role in stirring sewage, so that microorganisms can effectively degrade and consume organic waste to achieve the purpose of purification. One of the conditions essential to sustain microbial growth is to keep the water well mixed because it disperses air and nutrients.

Vigorous stirring is the most effective for mixing wastewater, but vigorous stirring will cause a lot of strong shear force that destroys the separation of bacteria, which will be detrimental to the efficiency of sewage treatment. Therefore, it is an important subject to effectively control the flow state of wastewater in order to improve the efficiency of wastewater treatment and save economic costs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a biological cultivation device with controllable flow state, and also relates to a special stirring cylinder for realizing the controllable flow state of the biological cultivation device.

In order to solve the above technical problems, the technical solution of the present invention is: a biological culture device with controllable fluid state, its innovative point is that it includes an outer cylinder, an inner cylinder, a slewing bearing, a motor A, a motor B, a cantilever, a base, and a bracket And the aeration device, the outer cylinder is vertically installed, the bottom of the outer cylinder is installed on the bottom plate through the slewing bearing, the inner ring of the slewing bearing is connected and fixed with the bottom of the outer cylinder, the inner ring of the slewing bearing is driven by the motor A, and the outer ring of the slewing bearing is connected to the bottom of the outer cylinder. A vertical drive mechanism A is arranged between the bottom plates; an aeration device is installed on the side wall of the outer cylinder, and the aeration nozzle of the aeration device extends into the outer cylinder, and a liquid outlet is installed at the bottom center of the outer cylinder, and a rotary joint A is installed on the liquid outlet ;The cantilever is set horizontally, the outer end of the cantilever is connected to the bracket set on one side of the outer cylinder, and the inner end extends above the outer cylinder, and an eccentric adjustment structure is set between the cantilever and the bracket; the inner cylinder is a special mixing cylinder set vertically. The piston rod of the mixing cylinder is installed on the inner end of the cantilever through the bearing assembly, and the special mixing cylinder is driven by the motor B to rotate, and the air inlet and outlet of the special mixing cylinder are all set at the top of the piston rod.

Further, it also includes a monitoring control system. The monitoring control system includes an online detection probe, a programmable controller, a control panel, and a display. The online detection probe includes dissolved oxygen, pH value, temperature, salinity, and turbidity in the outer cylinder. On-line detection probes, each on-line detection probe is connected to the signal input end of the programmable controller, and the signal output end of the programmable controller is connected to the motor A, the vertical drive mechanism A, the aeration device, the special mixing cylinder, and the motor B.

Further, the vertical drive mechanism A is a pair of drive cylinders arranged in a vertical direction.

Further, the eccentric adjustment structure is as follows: a waist-shaped groove is opened on the cantilever, and the cantilever is installed on the top of the bracket through a bolt passing through the waist-shaped groove and threadedly connected with the bracket.

Further, the eccentric adjustment structure is as follows: a horizontal guide column guide sleeve structure is set between the cantilever and the bracket; the cantilever is provided with a nut structure, and the bracket is equipped with a horizontal screw driven by a motor C, and the horizontal screw is threadedly connected with the nut structure .

A special mixing cylinder for realizing the above-mentioned biological culture device with controllable flow state, its innovative point is that it includes a cylinder body and a piston rod, and the piston rod is provided with two channels arranged along the axial direction of the piston rod; the top of the piston rod A rotary joint B communicating with the upper nozzles of the two passages is installed, the lower nozzle of one of the two passages is located on the side of the rodless chamber, and the lower nozzle of the other passage is located on the side of the rod chamber; the piston and the cylinder A feather key structure arranged in the axial direction is arranged between the internal walls.

The advantage of the present invention is that the outer cylinder and the inner cylinder are driven to rotate and lift through the motor, cylinder, etc., and combined with the eccentric adjustment structure, the different eccentricities of the inner and outer cylinders can be adjusted, and the flow patterns of different Reynolds numbers can be obtained by the rotation direction and speed , including low Reynolds number turbulent flow state and high Reynolds number turbulent flow state, so that fluid mixing can be completed slowly in the diffusion of laminar flow molecules, but also in large velocity gradients, especially in small scale (vortex) and high shear Rapid completion in turbulent flow under high rate conditions.

This in turn promotes cell growth, thereby improving the efficiency of biological treatment. At the same time, the surface area exposed by mixing is greatly increased, the flow of water body is basically uniformly rotated, and the direction of water flow is constantly changed, thereby maximizing the interaction between microorganisms and reaction substrates, greatly enhancing biodegradation.

Description of drawings

Fig. 1 is a schematic structural diagram of a biological culture device with controllable flow state in the present invention.

Fig. 2 is a structural schematic diagram of the special mixing cylinder in the present invention.

Detailed ways

As shown in Figure 1, the outer cylinder 1 is set vertically, the bottom of the outer cylinder 1 is installed on the bottom plate 3 through the slewing support 2, the inner ring of the slewing support 2 is connected and fixed with the bottom of the outer cylinder 1, and the inner ring of the slewing support 2 is driven by the motor A4 turn. Specifically: the inner ring of the slewing support 2 is an internal gear structure, the motor A4 is installed on the base plate 3, and the output shaft of the motor A4 is installed with an external gear structure that meshes with the inner ring of the slewing support 2.

A vertical driving mechanism A is arranged between the outer ring of the slewing bearing 2 and the bottom plate 3 , and in this embodiment, the vertical driving mechanism A is a pair of vertically arranged driving cylinders 11 .

An aeration device is installed on the side wall of the outer cylinder 1, and the aeration nozzle of the aeration device extends into the outer cylinder 1, so that the aeration device uses a large fine-pore diffuser to blow air bubbles and input cells in the exponential growth stage as a mixture .

A liquid outlet is installed at the center of the bottom of the outer cylinder 1, and the liquid outlet is equipped with a rotary joint A5 for smooth liquid discharge.

The cantilever 6 is arranged horizontally, the outer end of the cantilever 6 is connected with the support 7, and the inner end extends above the outer cylinder 1, and an eccentric adjustment structure is arranged between the cantilever 6 and the support 7. The eccentric adjustment structure is as follows: the cantilever 6 has a waist-shaped groove, and the cantilever 6 is installed on the top of the support 7 through the bolt 13 passing through the waist-shaped groove and threaded with the support 7 .

Those skilled in the art should understand that the eccentric adjustment structure here is exemplary, not limiting, and the eccentric adjustment structure can also be other known structures, for example: a horizontal guide post guide sleeve structure is set between the cantilever and the bracket; the cantilever is provided with A nut structure, a horizontal screw driven by a motor C is installed on the bracket, and the horizontal screw is threadedly connected with the nut structure.

The inner cylinder is a special mixing cylinder 8 arranged vertically. The piston rod of the special mixing cylinder 8 is installed on the inner end of the cantilever 6 through the bearing assembly 9. The special mixing cylinder 8 is driven to rotate by the motor B10. Specifically, the motor B10 is set on The cantilever 6 is close to the outer end side, the motor B10 is connected with the special mixing cylinder 8 through a belt drive, and the air inlet and outlet of the special mixing cylinder 8 are all arranged at the top of the piston rod.

In the present invention, the special-purpose stirring cylinder for the above-mentioned biological culture device with controllable fluid state includes a cylinder body 81, a piston rod 82, and a piston 83. The piston rod 82 is provided with two channels arranged axially along the piston rod 82; the piston rod 82 A rotary joint B12 connected to the upper nozzles of the two passages is installed on the top of the two passages, the lower nozzle of one passage a is located on the rodless chamber side, and the lower nozzle of the other passage b is located on the rod chamber side. Between the piston 83 and the inner wall of the cylinder body 81 there is an axially arranged feather key structure, that is, an inline key arranged on the piston rod 82 , and an axially arranged keyway is arranged on the inner wall of the cylinder body 81 .

In addition, it also includes a monitoring and control system. The monitoring and control system includes an online detection probe, a programmable controller, a control panel, and a display. Detection probes, each online detection probe is connected to the signal input end of the programmable controller, and the signal output end of the programmable controller is connected to the motor A4, the vertical drive mechanism A, the aeration device, the special mixing cylinder 8, and the motor B10.

working principle:

The status of the liquid in the outer cylinder is detected by the online detection probes of dissolved oxygen, pH value, temperature, salinity and turbidity. After the display is displayed, the staff operates the control panel according to the actual situation, and then controls the speed of each inner and outer cylinder, turn direction.

For example, the inner cylinder turns clockwise for n turns, then counterclockwise for n turns, then the outer cylinder turns clockwise for n turns, and then counterclockwise for n turns; or the inner barrel turns counterclockwise for n turns, then clockwise for n turns, Then the outer cylinder turns counterclockwise for n turns, and then clockwise for n turns; or the inner cylinder turns clockwise for n turns, then counterclockwise for n turns, then the outer cylinder turns counterclockwise for n turns, and then clockwise for n turns; The barrel turns counterclockwise for n turns, then clockwise for n turns, then the outer barrel turns clockwise for n turns, and then counterclockwise for n turns.

There are also the rise and fall of the inner and outer cylinders, as well as the eccentricity of the two, in order to obtain flow patterns of different Reynolds numbers, including low Reynolds number turbulent flow states and high Reynolds number turbulent flow states, so that fluid mixing can be achieved in laminar flow molecules. Accomplished slowly in diffusion, but also rapidly in turbulent flow with large velocity gradients, especially at small scales (vortices) and high shear rates. To achieve the effect of flow control.

Claims (6)

1. biological culture device that fluidised form is controlled is characterized in that: comprise urceolus, inner core, rotating bearing, motor A, motor B, cantilever, base, support and aerating apparatus,

Urceolus vertically arranges, and outer tube bottom is installed on the base plate by rotating bearing, and the inner ring of rotating bearing is connected and fixed with outer tube bottom, and the inner ring of rotating bearing is driven by motor A and rotates, and the A of vertical drive mechanism is set between the outer ring of rotating bearing and the base plate; The sidewall of urceolus is installed aerating apparatus, and the aeration mouth of aerating apparatus stretches in the urceolus, and liquid outlet is installed by the bottom centre of urceolus, and this liquid outlet is installed swivel joint A;

Cantilever is horizontally disposed with, and the outer end of cantilever is connected with the support that is arranged on urceolus one side, and the inner extends the urceolus top, and the eccentric adjustment structure is set between cantilever and the support;

Inner core is a vertically disposed special-purpose cylinder that stirs, and the piston rod that cylinder is stirred in this special use is installed in the inner of cantilever by bearing assembly, and the special-purpose cylinder that stirs is driven by motor B and rotates, and the special-purpose air inlet/outlet that stirs cylinder all is arranged on the top of piston rod.

2. the biological culture device controlled according to the described fluidised form of claim 1, it is characterized in that: also comprise supervisor control, supervisor control comprises online detection probe, programmable logic controller, control panel, indicating meter, online detection probe comprises dissolved oxygen, pH value, temperature, salinity, the turbidity on-line detection probe that is arranged in the urceolus, described each online detection probe is connected with the signal input part of programmable logic controller, and the signal output part of programmable logic controller is connected with motor A, the A of vertical drive mechanism, aerating apparatus, special-purpose stirring cylinder, motor B.

3. the biological culture device controlled according to the described fluidised form of claim 1, it is characterized in that: the described vertical drive A of mechanism is the driving cylinder that a pair of vertical direction arranges.

4. the biological culture device controlled according to the described fluidised form of claim 1, it is characterized in that: described eccentric adjustment structure is: have kidney slot on the cantilever, cantilever is installed in cantilever tip by the bolt that passes kidney slot and be threaded with support.

5. the biological culture device controlled according to the described fluidised form of claim 1, it is characterized in that: described eccentric adjustment structure is: horizontal guide pillar guide pin bushing structure is set between cantilever and the support; Cantilever is provided with nut structure, and the horizontal screw bolt that is driven by motor C is installed on the support, and described horizontal screw bolt is threaded with nut structure.

6. cylinder is stirred in a special use that realizes the biological culture device that the described fluidised form of claim 1 is controlled, and it is characterized in that: comprise cylinder body and piston rod, described piston rod is provided with along piston rod to the two paths that arranges; The top of piston rod is equipped with the swivel joint B that is communicated with the upper end mouth of pipe of two paths, and the lower end mouth of pipe of a paths is positioned at the rodless cavity side in the described two paths, and the lower end mouth of pipe of another paths is positioned at the rod chamber side; Be provided with the feather key structure that arranges vertically between piston and the inboard wall of cylinder block.

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