Unloaders of this type can very effectively use at construction sites with uniform intake of cement in large quantities. With small daily cement consumptions and uneven delivery of it to the construction site, mobile pneumons, as a rule, are underloaded or idle for a considerable time in anticipation of the arrival of a batch of cement.
That is why in the United States, along with such powerful fasting agents as screw pneumatic pumps, the simplest means of mechanization are also used to unload cement, which allow you to solve the same problem more economically. Such tools include, for example, a portable chamber pump, the design of which is developed by the company “L. WITH. Neshman Products. Such a pump through hatches or holes can be installed in railway cars, tanks, vessels and used to move any dry granular materials with a performance of up to 27 t/h. Pumps of this type “L. WITH. Neshman Products manufactures with cameras with a diameter of 609, 762 and 914 mm; The performance of pumps with such cameras, respectively, is 10.8; 18.1 and 27.2 t/h. The weight of the pump with a camera with a diameter of 609 mm – about 45 kg.
The material to be transported is sent to the receiving hopper located above the camera. After the loading of the camera is completed, compressed air is released into it; a shutter designed to close the loading hole with a diameter of 200 mm, due to the presence of a rubber gasket, provides the necessary seal. Compressed air aerated material from the camera is directed to the loading hole. The receiving bunker is loaded during the operation of the pump, which reduces breaks in the presentation of the material.