I. LFB-I type material seal pump is a new type low-pressure pneumatic conveying pump developed by our factory on the basis of introducing advanced foreign technology and aiming at various problems of different types of pneumatic conveying equipment in China and the cooperation of Building Materials Institute. The product is widely used It is suitable for power ash removal, cement homogenization and pouring, transportation of various powder materials, high efficiency and low consumption, totally enclosed, non-polluting and no maintenance. The air source can use Roots blower and compressed air. Second, the working principle: The delivery of materials through the material sealed warehouse into the pump body, the pump body material through the lower part of the fluidized air box fluidized compressed air through the main duct through the nozzle into the diffusion mixing chamber, the fluidized Materials in the material storage warehouse material pressure and nozzle negative pressure into the diffusion mixing chamber mixed with the air flow, air flow carried along the pipeline to the discharge point (inventory). Third, single-storey pump, negative pressure transmission fly ash problems 1, power consumption, serious wear and tear As a warehouse pump 0.4Mpa-0.6Mpa high-pressure gas supply, elbow pipe wear serious. Grinding wear repair, frequent replacement, in particular, the discharge Valve, feed valve, exhaust valve wear and tear, often stuck, together with the pneumatic three major damage to the high maintenance costs, workers repair climb the pump body, the temperature is high, the environment Bad, labor-intensive. 2, complicated operation As the warehouse pump with automatic control of material level and time, console wiring complex, a little problem, involving electrical, thermal, ash removal over the three departments to a number of professional ashfield, delay maintenance time to management Brought a lot of trouble, it is difficult to ensure the normal production. 3, the environment is very poor For the above reasons, in order to ensure the operation, repair times, equipment leaks ash, endangering the factory environment and surrounding people's living environment, to civilized production have a tremendous impact. 4, affecting the comprehensive utilization of fly ash In order to carry out the comprehensive utilization of fly ash, enterprises invested heavily in fly ash production line, but due to frequent damage to the delivery system to ensure the normal production of wind-election equipment system, ash pipe can not be sent, the impact Users for ash, loss of corporate image and interests. 5, affecting the normal operation of sediment tank As the design of ash removal, warehouse pump damage, had washed with water to the sediment pool, resulting in insufficient flushing water, water tight, and because of small gray, easily lead to network tube plug, valves, Ash pump pipe knot scrapped, so that the entire red slag system, a serious loss. 6, although the negative pressure transmission wear light, but the fan with a few years after the gradual reduction in the amount of wind, resulting in gray sent less phenomenon. Fourth, the use of material seal pump advantages 1, equipment investment is small, with a material seal pump can replace two sets of pump, reducing equipment investment. 2, Sealing pump gas pressure 0.04Mpa-0.1Mpa, reducing the supply pressure, saving gas consumption, while reducing the motor power. 3, reducing maintenance costs. The system once commissioned after commissioning, the basic need for operation, almost no maintenance, maintenance workers only regular inspection can be. 4, low pressure transmission, better equipment sealing, reliable operation, no plugging phenomenon, the environment has been improved. Fifth, the structure and working principle Sealing pump by the diffusion chamber, pump body, duct activities, the implementing agencies and other components. Low-pressure air into the air duct, pump body, into the diffusion chamber. When the high-speed airflow passes through the pump body, the material around the nozzle is gasified, and the airflow entering the diffusion chamber from the nozzle forms a partial negative pressure in the nozzle and the diffusion chamber, the vaporized material is sucked into the delivery tube and is elevated to the discharge point by the high-speed airflow, Schematic diagram is as follows: Specifications Model and technical performance of some users
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