How To Choose The Right Chemical Pneumatic Mixer

The chemical mixer includes an electric motor, a mixing drum, a drive shaft, and a mixing blade, wherein a reverse mixing blade is loosely sleeved on the drive shaft, and the shaft sleeve of the reverse mixing blade is connected to the middle of the drive shaft through a chain The sprocket at the upper end of the shaft is connected, and the passive gear coaxial with the sprocket meshes with the driving gear fixed at the lower end of the transmission shaft. So how to choose the right chemical pneumatic mixer?

1. How to choose the motor of chemical pneumatic mixer?

1. Radial (radial) piston motor: its speed is lower than that of vane motor, but it has good starting and speed control performance, especially suitable for radial heavy load and low speed. Piston motors generally operate horizontally.

2. Reversible / irreversible motor: In the same type, the speed, torque and power of the irreversible gas motor are higher than that of the reversible gas motor.

3. Working air pressure: When selecting a gas motor, the performance table indicates a set of performance parameters at a specific working air pressure of 90 psig (620 Kpa). The air motor is in a better design working state at this working air pressure. By adjusting the inlet and exhaust pressure, the speed, torque and air motor power of the air motor can be adjusted. When the air motor's working pressure is lower than 40 psig, its performance may not be very stable. The air motor can work at a working pressure higher than 100 psig However, at this time, the wear of the air motor is increasing. When determining the type of the air motor, you can follow a principle: choose 70% of the lower air pressure as the base. This allows the selected air motor to have enough power to deal with the starting shock and Possible overload.

4. Greater power of gas motor: the greater power of non-speed-limiting gas motor reaches the power of speed-limiting gas motor (22 and 55 series) at free speed (50% speed of free speed (no-load speed)) No-load speed) at 80% speed.

5. Working speed: The working speed of the speed-limiting gas motor is a gas motor that will not run without load. It can be found in its performance curve. The nominal speed on the nameplate is for differentiation only.

Second, how to choose the right chemical pneumatic mixer correctly

1. Mixer: to ensure the mixing of materials, consume less power, low cost, convenient operation and easy maintenance.

2. Mixing container: Determine the shape and size of the mixing container according to the mixing purpose and material characteristics of the production scale. If there is no special need, generally choose a vertical drum container, and determine the appropriate height to diameter ratio.

3. Stirring shaft: It should have sufficient torsional strength and bending strength, usually the stirring shaft should have sufficient rigidity.

4. Shaft seal: If more liquid leakage is allowed and the pressure in the kettle is low, a packing seal can be used; when the leakage is low, the pressure or vacuum in the kettle is high, and the friction power consumption between the shaft and the sleeve is low, a mechanical seal should be used.

5. Transmission: It should meet the power and speed requirements of chemical mixer, reliable operation, convenient maintenance, high mechanical efficiency and low noise.

6. Rack: The stirring shaft should have sufficient supporting spacing to ensure that the deflection of the stirring shaft is not large, and the output shaft, stirring shaft and shaft sealing device of the transmission are aligned.

7. Internal components of mixing equipment: Determine whether baffle and inner cooling pipe are needed according to chemical mixing type and material operation characteristics.

3. What should be paid attention to when using chemical pneumatic mixer?

(1) After the host is started, it is strictly forbidden to extend the head or hands into the host tank for inspection and exploration; it is strictly forbidden to repair or clean up the debris when each belt conveyor is running;

(2) It is strictly prohibited to restart directly when the host is stuck or tripped during the operation (the materials in the host should be cleaned manually before restarting, so as not to burn the AC contactor of the motor and air motor manufacturer);

(3) When the machine breaks down during the operation, it should be stopped and checked, and if necessary, turn off the power.

(4) If the voltage is abnormal during operation, immediately turn off the power and wait for the voltage to return to normal before continuing work.