First, the definition of air transport chute.
A: The air chute is used to horizontally transport dry powdered materials (such as cement, raw materials in cement companies). It is composed of a number of slots made of thin steel and is arranged with a certain inclination in the direction of its transport. In the middle of the upper and lower shells of the trough, there is a breathable layer.
Second, the working principle of the air transport chute A: The high end of the conveying material is fed into the upper shell, the compressed air is blown into the lower shell by a special blower, and is distributed through the air-permeable layer of the densely distributed pores between the material particles, so that the materials The so-called gasification is performed to change the friction angle of the material, and it forms a flow state and descends along the slope to achieve the purpose of transportation.
Third, the cause of air transport chute plugging.
1. Contain foreign matter in the conveying material; 2. Due to cracks in the porous plate in the air conveying chute, or gaps between the porous plates installed; 3. The air conveying chute is not tightly sealed and there is more air leakage; 4. Due to air conveying The slope of the groove is too small; 5, due to the parking, the air transport chute has a large number of physical items and is not completely empty; 6. The positive pressure in the chute is too large.
four. How to use and maintain the air transport chute daily.
Answer: 1. When installing, the horizontal position of the tank should be guaranteed; otherwise, the material will be biased towards the low side. Breathable layer to be tensioned, the tank body should be tightly connected, no leakage. 2. Ventilation pressure test should be carried out before use. The air pressure in the lower tank should be in the frame of Figure 5-76; 3, 4000Pa or so, the air pressure in the upper tank should not exceed 147Pa. If the pressure difference in the lower tank is too small, it will pass. The amount of air in the breathable layer decreases, affecting the delivery. 4. The feeding amount should be uniform, and the materials can not be entrained with foreign matter. Otherwise, the debris will be deposited on the air permeable layer, which will affect the ventilation, cause blocking, and accelerate the abrasion of the air-permeable layer. 5, should always clear the material in the lower tank, replace the breathable layer in time.
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The tube cap has an O-ring built-in gasket to prevent liquid leakage.
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