Material sealed pump design principles and operation and maintenance points 
 In order to master the material sealed pump design principles and operation and maintenance of the main points of this chapter test the use of fluid dynamics - Bernoulli's theorem, discussed the role of wind resistance of the fluid flow and pressure relationships and material sealed pump shaft kiln internal, according to these relationships to explain some phenomena in the production and use of material sealed pump, combined with a lot of testing and production of practical results, summarized clinker smooth trail material sealed pump tube and has the efficient lock Feng ability, truth - material sealed The pump works. 
 Made some small bile simplified the use of Bernoulli's theorem, for some factors, in essence, does not affect the analysis of the internal fluid dynamics of vertical kiln. For example, assume that the shaft kiln operating system is in steady state, the gas temperature and gas composition are constant; calculation does not consider the amount of gas and other raw material decomposition, these simplified to help understanding of these relationships. 


 First, an overview 
 Rich into a low-pressure pneumatic conveying equipment, material sealed pump products, the introduction of foreign advanced technology on the basis of the domestic industry, different types of pneumatic conveying equipment exist various problems to develop a new type of low-pressure pneumatic pump equipment. 
 The material sealed pumps are widely used in thermal power plants, thermal power plant pneumatic ash handling system, water conservancy and hydropower construction sites and city commercial concrete mixing plant, mixing the powder in the station in material handling, cement homogenization and down the library, a variety of powdered materials the delivery, as well as the industries of metallurgy, chemicals, building materials, docks and other powdery material handling, transshipment process. Fu into a series of low pressure pneumatic conveying equipment, material sealed pump has been successfully used in many powder project, is one of the best powdered materials in pneumatic conveying equipment as countries improve environmental standards and the utilization of fly ash enhanced awareness of The power to change the hydraulic ash to dry out the gray has become the current trend. I plant development and production of material sealed pump, with the wind to drive down, simple operation, small amount of maintenance and so on, are widely used in electric power, aluminum, cement, chemical industry, material sealed pump is the ideal equipment to transport all kinds of dust materials. 



 Material sealing the structure of the pump: 
 This device consists of four major components: 
 Gas source part; material sealed pump; off the hopper and ash tube;, ash conveying pipeline. Responsible for the material sealed pump and off the ash bucket plant. The rest of the self by the user. 

 Material seal pump inlet section, the proliferation of the mixing chamber, the material components. Intake in part by the air regulator, in charge of activities, adjusting mechanism, nozzles and other components. Diffusion mixing chamber by the pump. Gasification plant on tribal ash bucket composed of a material part by the diffuser (tapered tube, gradually expanding tube) out of the gray short section. 




 LFB series of material sealed pump I plant developed in cooperation with relevant scientific research departments, the use of the new design of low pressure, enhance the dilute phase pneumatic conveying equipment. The pump is a single-chamber pump, bucket elevators and other equipment than the small size, wind down, wear small, less wearing parts, low maintenance costs, good sealing performance, dust, easy to operate features. This equipment is suitable and easy to transport capacity of 0.8 powdery and granular material, widely used in cement, electric power, metallurgy, aluminum, mining and other industries. Especially in recent years, the material sealed pump has been gradually into the electricity, cement industry, showing strong vitality, and by the praise of customers and the engineering and technical personnel.