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Axial Flow Impeller Physical And Chemical Properties
Sep 26, 2017

Axial Flow Impeller are now gradually in the greenhouse industry has been widely used, we have to choose the job, the only way to make its performance is fully demonstrated, we choose the axial fan when there are five important attention factors, we understand how much Well, let's take a closer look at the next:

1. Indoor axial fan selection control parameters for the fan type, material, air volume, total pressure, efficiency, noise and motor power.

2. Depending on the physical and chemical properties of the delivered gas, select the ventilator for different purposes. Such as conveying clean air, should choose the general fan; transport flammable, explosive gas,Axial Flow Impeller should choose explosion-proof fan; transport corrosive gas, should use corrosion-resistant fan.

3. For ventilation systems with muffling requirements, first select the ventilator with high efficiency and low impeller speed and make it work near the highest efficiency point.

4. Note the matching relationship between the pipe network resistance characteristics and the fan characteristics. In order for the through-shaft fan to operate stably, the ventilator should be operated near its highest efficiency point. The operating point of the fan is located on the right side of the full-pressure peak point in the performance curve (ie, the large air volume side, Of the 80%).

5. Ventilator selection, should consider the pipeline system leakage loss, calculation error, and the actual fan air flow, the negative pressure deviation, the general use of air volume of 1.05 ~ 1.1,Axial Flow Impeller the wind pressure of 1.10 to 1.15 of the safety factor.

How does the hydraulic cylinder work:

In the normal state, the inlet and outlet lines are cut with the hydraulic cylinder, the piston position is fixed.

When the blade is closed, the motor head drives the control panel 7 to rotate counterclockwise to drive the slider 12 to the right. At this point the hydraulic cylinder only with the impeller for the rotation movement, positioning shaft 1 and connected to the double-sided rack 8 stationary. So that the large gear 10 can move to the right of the single-sided small rack 9 with only a fulcrum. The pressure port is connected to the blue oil passage, and the red oil passage is connected to the oil return port. The pressure oil continuously enters the hydraulic cylinder on the right side of the piston 3 from the blue oil passage,Axial Flow Impeller so that the hydraulic cylinder moves continuously to the right. The working oil in the hydraulic cylinder on the left side of the piston is returned from the red oil passage through the oil return hole. The hydraulic cylinder is connected to the adjusting rod of each moving blade on the impeller. When the hydraulic cylinder moves to the right, the angle of the moving blade decreases.

(Feedback process) When the cylinder moves to the right,Axial Flow Impeller the positioning shaft is driven to move to the right. But because the slider does not move, so the gear to B as the fulcrum, single-sided rack to move to the left. This allows the servo valve to turn off the oil mark and the red oil hole, and the hydraulic cylinder is moving in the new equilibrium position. While the moving blades are also working in a small state, which is the feedback process. In the feedback, the gear drives the indicator shaft to rotate and displays the moving blade at a small angle.

When the angle of the moving blade is increased,Axial Flow Impeller the electric head drives the control shaft to rotate clockwise to drive the slider to the left. At this time, since the hydraulic cylinder only rotates with the impeller, the positioning shaft and the tooth cover are stationary. A for the fulcrum, to promote the meshing with the one-sided rack to move to the left, so that the pressure port and the red port connected to the blue port and the oil port connected to the oil from the red oil constantly into the piston Hydraulic cylinder, the hydraulic cylinder constantly moving to the left at the same time the right side of the piston hydraulic cylinder oil from the blue oil passage through the oil return hole to return to the tank, the hydraulic cylinder to the left, moving blade angle increases.