Genetic algorithm is a new design method, which is robust to the optimization design of complex systems. This paper constructs a mathematical model of the planetary reduction gearbox of a high-power inverted umbrella aerator through the research of genetic algorithm. Methods The discrete variables and integer variables of its gear train are optimized and designed, which solves the problem of the optimization design of the planetary gear of the high-power inverted umbrella aerator cheap price.
Gearboxes have a wide range of applications, such as in wind turbines. Gearboxes are an important mechanical component that is widely used in wind turbines. Its main function is to transmit the power generated by the wind wheel under the action of the wind to the generator and make it get the corresponding speed.
Generally, the rotation speed of the wind wheel is very low, far less than the rotation speed required by the generator to generate electricity. It must be realized by the speed increasing effect of the gear pair of the gear box.
The gear box bears the force from the wind wheel and the reaction force generated during gear transmission, and must have sufficient rigidity to withstand the action of force and torque, prevent deformation and ensure transmission quality. The design of the gearbox housing should be carried out in accordance with the requirements of the wind turbine power transmission layout, processing and assembly conditions, and ease of inspection and maintenance.
The bearings of the transmission parts are all domestic well-known brand bearings or imported bearings, and the seals are skeleton oil seals; the structure of the suction box, the larger surface area of the cabinet and the large fan; reduce the temperature rise and noise of the whole machine, and improve the reliability of operation , The transmission power increases. It can realize parallel shaft, right-angle shaft, vertical and horizontal general box. The input methods include motor connection flange and shaft input; the output shaft can be output at right angles or horizontally. Solid shaft and hollow shaft, flange type output shaft are available . The gearbox can meet the installation requirements of a narrow space, and it can also be supplied according to customer needs. Its volume is 1/2 smaller than that of the soft gear reducer, the weight is reduced by half, the service life is increased by 3 to 4 times, and the carrying capacity is increased by 8 to 10 times. Widely used in printing and packaging machinery, three-dimensional garage equipment, environmental protection machinery, conveying equipment, chemical equipment, metallurgical mining equipment, iron and steel power equipment, mixing equipment, road construction machinery, sugar industry, wind power generation, escalator and elevator drives, shipbuilding, light High-power, high-speed ratio, high-torque occasions such as industrial field, papermaking field, metallurgical industry, sewage treatment, building materials industry, lifting machinery, conveyor line, assembly line, etc. It has a good price-performance ratio and is conducive to the matching of localized equipment.
The gearbox has the following functions:
1. Accelerate and decelerate, which is often referred to as a variable speed gearbox.
2. Change the transmission direction. For example, we can use two sector gears to transmit the force vertically to the other rotating shaft.
3. Change the rotating torque. Under the same power condition, the faster the gear rotates, the smaller the torque on the shaft, and vice versa.
4. Clutch function: We can separate the engine from the load by separating the two originally meshed gears. Such as brake clutch and so on.
5. Distribution of power. For example, we can use one engine to drive multiple slave shafts through the main shaft of the gearbox, so as to realize the function of one engine driving multiple loads.
The new type of vortex aerator (aeration head) directly injects "microbubbles" into the untreated sewage through the diffuser impeller. Under the combined action of the coagulant and the flocculant, the suspended matter undergoes physical flocculation and chemical Flocculation to form large suspended solids flocs. The "flocs" float on the liquid surface to form scum under the floating action of the air bubbles, which are separated from the water by a slag scraper; there is no need to clean the nozzles and no blockage will occur.
Aerator gear box GSAB57, GSAB67 helical gear worm gear reducer BWD35-2-0.55
GS37.GS47.GS57.GS67.GS77.GS87.GS97.GSA37.GSA47.GSA57.GSA67.GSA77.GSA87.GSA97 GSF37.GSF47.GSF57.GSF67.GSF77.GSF87.GSF97 GSAF37.GSAF47.GSAF57.GSAF67.GSAF77. GSAF87.GSAF97
GSAT37.GSAT47.GSAT57.GSAT67.GSAT77.GSAT87.GSAT97
GSAZ37.GSAZ47.GSAZ57.GSAZ67.GSAZ77.GSAZ87.GSAZ97
XWEDY0.37-4P-8130A-473 RCW77-Y0.55-138.39-W1-IV BKAF132-Y1.1-4P-6.57-M2-A-90° FCW37-Y0.18-70.5-K-W3-III KCL57 -Y1.1-4P-6.57-K-W2-A-IV WPS40-50-A WB100-WD-9-550W KD03-72.54-Y0.18KW-4P-M1-J1-A SFK04-NA27-Y0.25KW -4P-Y71M1-4-M1-J1-A PF03-NA103-Y0.18KW-4P-Y63M2-4-M1-J1 RF07-NA9.1-0.18KW-4P-Y63M2-4-M1-J1 T7-1 :1-1-L-B3 RV40-7.5-71B5 JRTRX77D160N4/BMG/HF/TF/777/M1/180° JRTSAF57TD63L4/BMG/HF/TF/180.4/B/M1/180° JRTK47TD63M4/BMG/HF/TF /90.86/B/M1/180° JRTFA37GD63M4/BMG/HF/TF/54.54/M1/180° DLR06R02-NA0.69-DM63M-4-E-M3-R1 DLK01-NA34-DM63S-4-M3-R1 DLFA00 -104.3-DM63S-4-M2-L3 CH-40-2200W-25SB ZDY315-5-I BWD120-9-Y0.55KW-4P XWED42-3481-0.37KW BWD9-20-Y0.55KW-4P MTDXF77-Y11KW- 4P-1.88-M1-0° MTJ47-Y0.18KW-4P-90.86-M1-0°-A MTP37-Y0.18KW-4P-54.54-M1-0° MTN57-Y0.25KW-4P-180.4-M1- 0°-A RXF77-Y11KW-4P-1.88-M1-0° K47-Y0.18KW-4P-90.86-M1-0°-A F37-Y0.18KW-4P-54.54-M1-0° S57-Y0. 25KW-4P-180.4-M1-0°-A MTDXF67-5.5KW-4P DXF77Y160M-4NA777 GKAF107R77-Y4-4P-M4-A-270° GKAF57-Y1.1-4P-6.57-M2-A-90° GR77 -Y0.75-4P-121.42-M2-90° GFA37-Y0.18-4P-70.50-M3-270° GSA87-Y3-4P-99.26-Ф60
XWEDY0.37-4P-8135A-473 RCW77-Y0.75-121.42-W2-III BKAF132-Y1.5-4P-M3-B-180° FCW37-Y0.25-66.09-K-W4-IV KCL57-Y1 .5-4P-11.26-K-W3-B-III WPS40-60-A WB100-WD-11-550W KD03-68.80-Y0.18KW-4P-M1-J1-A SFK03-NA13-Y0.25KW-4P -Y71M1-4-M1-J1-A PF03-NA119-Y0.18KW-4P-Y63M2-4-M1-J1 RF07-NA9.5-0.18KW-4P-Y63M2-4-M1-J1 T7-1:1 -1-LR-0-B3 RV40-10-71B5 JRTRX87D132N4/BMG/HF/TF/777/M1/180° JRTSAF57TD63L4/BMG/HF/TF/154.35/B/M1/180° JRTK47TD63M4/BMG/HF/TF /85.12/B/M1/180° JRTFA37GD63M4/BMG/HF/TF/51.7/M1/180° DLR06R02-NA0.8-DM63M-4-E-M3-R1 DLK01-NA37-DM63S-4-M3-R1 DLFA00 -97.29-DM63S-4-M2-L3 CH-40-2200W-30SB ZDY315-5.6-I BWD120-11-Y0.55KW-4P XWED42-5133-0.37KW BWD11-20-Y0.55KW-4P MTDXF87-Y7. 5KW-4P-1.88-M1-0° MTJ47-Y0.18KW-4P-85.12-M1-0°-A MTP37-Y0.18KW-4P-51.7-M1-0° MTN57-Y0.25KW-4P-154.35- M1-0°-A RXF87-Y7.5KW-4P-1.88-M1-0° K47-Y0.18KW-4P-85.12-M1-0°-A F37-Y0.18KW-4P-51.7-M1-0° S57-Y0.25KW-4P-154.35-M1-0°-A MTDXF67-7.5KW-4P DXF87Y132M-4NA777 GKAF107R77-Y5.5-4P-M5-B-0° GKAF57-Y1.5-4P-M3-B -180° GR77-Y1.1-4P-102.99-M3-18 0° GFA37-Y0.25-4P-66.09-M2-180° GSA87-Y4-4P-27.28-Ф70
working principle:
The aerator is composed of five parts: submersible pump, jet, diffuser, suction pipe and hose. On the basis of traditional jet flow mechanism, it integrates advanced diffuse flow technology and adopts jet flow aeration method.
During operation, the impeller of the water pump is driven by the submersible motor to rotate at a high speed, pushing the mud-water mixture into the jet to form a jet, creating a negative pressure zone around the jet, and sucking air into the negative pressure zone of the jet nozzle through the suction pipe, in the jet's throat. The gas, water, and mud are fully mixed, and the kinetic energy of the jet is gradually transformed into pressure energy through the diffuser of the jet, and then enters the diffuser. In the diffuser, the gas, water, and mud mixture is further mixed, forcing the gas to continue to shear, crush and emulsify, ensuring that most of the oxygen is fully dissolved in the water. At the same time, under the action of the jet fluid pressure, the jet carries oxygen molecules and tiny bubbles, which are sprayed and diffused obliquely downward from the nozzle of the diffuser, forming an impact and stirring on the water body and the sludge at the bottom of the biochemical tank. The bottom slowly rises to the water surface, and the microbubbles stay in the water for more than 30 seconds, so that the oxygen in the air is fully dissolved and absorbed, and the oxygen transfer efficiency and oxygenation capacity are improved.
This equipment can make mud water and air generate high negative pressure and strong turbulence, stirring and shearing in the jet, and promote the high frequency oscillation of the liquid film and the gas film, so that the bubble diameter is greatly reduced, and the number of bubbles increases. Increasing the specific surface area of the bubbles, and at the same time making the gas-liquid film thinner, can greatly reduce the mass transfer resistance, so that oxygen molecules can better transfer from the gas phase to the liquid phase.
In the process of high-speed advancement, the jet has a high angular velocity under the action of high-speed rotation in the disperser, so that the jet has a strong penetrating power, makes the tiny bubbles travel far in the water, and enhances the ability of stirring, pushing and aeration.
Efficient dissolved oxygen
The unique diffuser design makes the inhaled air and muddy water mix evenly, produces small and numerous bubbles, and has a high dissolved oxygen rate. The oxygen transfer efficiency is as high as 30%, which is 35% higher than the traditional blast aeration.
Stir well
The high-speed rotating gas, water, and mud mixture (ie activated sludge) has strong penetrating power, which makes the oxygen transfer efficiency in the water high, and at the same time achieves a good stirring effect, which can ensure that the activated sludge is evenly mixed and keep the activated sludge in suspension . At the same time, due to the strong effect of stirring and mixing, the volume utilization rate of the aeration tank is improved.
No noise in operation
This equipment is designed for underwater operation, no noise, improves the working environment, and can be arranged in sewage treatment facilities in living quarters.
System performance
This equipment does not need the fan room and complicated air pipeline system in the blast aeration method, the system is simple, there is no blockage, no air filter device is needed, and the operation is stable. Both the jet and diffuser are made of corrosion-resistant high-density polyethylene engineering plastics, and the submersible pump adopts mechanical seals for reliable operation.
Easy to install and low maintenance
This equipment can adjust the air volume arbitrarily according to the structural characteristics of the aeration tank, the volume of the water to be treated, the changes of water quality indicators, etc., and the installation position, arrangement method, spray angle, diving depth, etc. can be flexibly selected. In this equipment, the jet is usually installed on the diffuser, and the submersible pump is arranged separately and connected with a hose so that the pump can be lifted out for maintenance, avoiding emptying the pool during equipment maintenance. At the same time, it is more convenient to carry, hoist and disassemble.
Since the jet and diffuser are static equipment and do not require operation and maintenance, the submersible pumps are made of professional manufacturers and the quality is easy to guarantee. Therefore, this equipment basically does not require frequent maintenance. Generally, submersible pumps are routinely maintained once a year.
Scope of application
This equipment has a wide range of applications. It can be used for industrial wastewater treatment and domestic sewage treatment, and can also be used for rivers, lakes and other surface water treatments, groundwater removal of iron and manganese, and water supply treatment; it can be used for aeration and stirring of activated sludge aeration tanks. Homogeneous mixing in conditioning tanks, aeration and sand sedimentation in sewage treatment plants, aeration in aerobic tanks, mixing in coagulation tanks, and homogenization of mixing in chemical reaction tanks, etc.
