Hyperboloid Agitator Applications:
QDJ and GDJ series hyperboloid agitators are widely used in chemical, energy, and light industry applications requiring solid-liquid-gas mixing of liquids, especially suitable for coagulation tanks, equalization tanks, anaerobic tanks, nitrification and denitrification tanks in wastewater treatment processes.
Hyperboloid Agitator Structure:
The hyperboloid agitator consists of a transmission component, impeller, base, hoisting system, and electrical control system.
Hyperboloid Agitator Working Characteristics:
This is a device capable of creating large-capacity mixing while achieving large-area circulation and gentle water flow with relatively low power.
The impeller structure design of the hyperboloid agitator maximizes the combination of fluid characteristics and mechanical motion. The multi-curved impeller's surface is a curved body formed by rotating a curve along the y-axis, with the equation xy=b. To accommodate water flow, water is designed to enter from the center of the impeller. This reduces turbulence and ensures uniform pressure on the impeller surface, thus maintaining the overall balance during operation. Eight guide vanes are evenly distributed on the involute multi-arc surface. The potential energy gained from supplemental water intake, aided by the liquid's own weight pressure, combines with the centrifugal force generated by the impeller's rotation to form kinetic energy. Under neutral acceleration, the liquid initially moves tangentially along the impeller's circumference. Reflected by the pool wall, this creates a top-down circulating flow, resulting in cross-flow in both the axial (y) and radial (x) directions.
Hyperboloid Agitator Product Features:
1. Excellent mixing effect, no dead zones - Excellent flow characteristics
2. Large specific surface area impeller, low power consumption - Energy saving
3. Flexible installation and convenient maintenance - Convenient
Performance Parameters:
Impeller Material: GRP (Glass Reinforced Plastic), S (Stainless Steel) The above parameters are applicable to conventional municipal water conditions.
Application Selection
The selection process for QDJ and GDJ is the same; the only difference is the installation method. Like all mixing machinery, the selection of a hyperboloid agitator is related to the tank shape, volume, liquid concentration, medium temperature, and pH.
The selection of a hyperboloid agitator is determined based on the service area of each agitator. Following the principle that the length-to-width ratio of the tank should not exceed twice, the rectangular tank is divided into equally sized working units to determine the number of agitators.
In addition, for water depths exceeding 8 meters or liquid concentrations exceeding specified limits, the power of the multi-curved surface mixer should be increased or its operating speed increased during selection to ensure effective mixing in large-volume and high-concentration liquids. Generally, the QSJ series multi-curved surface mixer is suitable for normal operating conditions, while the GSJ series is suitable for harsh environments with high temperature, high corrosion, or strong corrosiveness. Our company can assist users in selecting the appropriate model based on their environment.
GDJ Series Hyperboloid Mixer Installation Steps
1. The cable tray should be leveled, and the semi-cable tray columns should be vertical. Anchor bolts and connections should be secure and reliable.
2. Place the vibration damping seat flat in the designated position on the cable tray, level it, and then connect and secure it to the cable tray.
3. Install the geared motor on the vibration damping seat and connect and secure it.
4. Connect and tighten the impeller to the mixing shaft flange with bolts.
5. Place the impeller and stirring shaft into the tank. Connect and secure the stirring shaft to the reducer output shaft. If water is present, first connect the shaft and impeller and place them in the water, then connect the shaft to the reducer.
6. After installation, the stirring shaft must be perpendicular to the horizontal plane, with a vertical deviation of less than 1/1000.
7. After installation, remove the motor tail cover and use the hand fan blades to check if the multi-curved surface mixer is flexible and functioning normally. The stirring shaft swing deviation should be less than 3/1000.
8. After connecting the power supply, briefly observe the direction of the stirring shaft. Looking down, the correct direction is counter-clockwise rotation. If it is counter-clockwise, arbitrarily swap the positions of any two power supply wires.
9. Electrical equipment installation must be carried out in accordance with relevant national regulations and procedures.
QDJ Hyperboloid Mixer Series Installation Steps
1. Briefly observe the impeller direction from the shore. The correct direction, viewed from above, is counter-clockwise rotation. If it's counter-clockwise, swap the positions of any two power supply wires.
2. Secure the motor cable separately from the sling. Do not tangle the cable and steel rope together to prevent them from getting caught in the impeller.
3. Use a crane to lift the hyperboloid mixer and slowly lower it into the pool, being careful not to hit the pool wall.
4. Secure one end of the fixing rope to the shore and the cable control cabinet.
Hyperboloid Mixer Operation:
After installation, a test run is required. Before the test run, fill the pool with water to approximately 70% of its volume. Never run the equipment without water, as this can cause uneven stress on the mixing shaft and bending. After the test run, check the following:
1. Check for abnormal noises and temperature rise in the geared motor.
2. Check if the motor current is within the rated range (overcurrent during startup is normal).
3. Check the oscillation of the stirring shaft.
4. Check for debris in the tank.
Hyperbolic Surface Mixer Maintenance:
1. After the new machine has run for 200-300 hours, the reducer lubricating oil needs to be changed and internal oil stains cleaned. Thereafter, it can be changed every six months to one year. For details on the use of the reducer motor, please refer to the manufacturer's maintenance manual.
2. Regularly check the stirring shaft locking nut and all connecting bolts for looseness.
3. Regularly check the oscillation of the stirring shaft and promptly clean any entangled material on the impeller and shaft.
4. Regularly check for abnormal noises and temperature rises in the components.
5. Regularly check for abnormal changes in current.
