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Pneumatic conveying system

Selection: "dense phase pneumatic conveying system"

Author: Hongguang roots blower Release time: 2020-02-22 18:00:19 Number of visits:

Key words: "dense phase pneumatic conveying system"

"Dense phase pneumatic conveying system" mainly refers to the plug flow pneumatic conveying. The powder is no longer dispersed in the conveying pipe, but a static pressure difference is formed at both ends of the material plug. The material bolt moves forward, which has the unique characteristics of low speed, dense phase and low power index. The wear of materials is directly proportional to the second or third power of flow rate, because the decrease of air flow speed greatly delays the wear of materials On the basis of rapid fluidization, if the fluidization air volume increases or the bed load decreases, the particle concentration in the bed will become thinner, and the particles in the bed will be evenly distributed up and down Dense phase pneumatic conveying system It is characterized in that the pressure drop per unit height of the material layer does not change with the change of the material layer height.

along with Dense phase pneumatic conveying system The power index of pneumatic conveying decreases with the increase of solid gas ratio. This is a more ideal form of transportation. In this century, especially in the 1960s and 1970s, Dense phase pneumatic conveying system The research of the project has reached a climax. Scholars in different fields Dense phase pneumatic conveying system We have made a lot of valuable research results and developed various types of Dense phase pneumatic conveying system Device.
 Dense phase pneumatic conveying system

1、 Introduction

Dense phase pump is a kind of dense phase dynamic pressure pneumatic conveying equipment which can transport powdery materials under high pressure (below 1000 kPa). There are two discharge methods for dense phase pump, and bottom discharge is a common method. The materials in the tank can be fluidized by conical aeration tank, nozzle spray or other methods. The fluidized aeration plate at the bottom can discharge the materials from the upper part of the tank. The distribution of the gas transported in the tank on different input planes depends on the nature of the transported materials.

2、 Type

   Dense phase pneumatic conveying system It can be divided into two types: one is through the sending tank, the other is through the rotary valve. Positive pressure dense phase pneumatic conveying is a discontinuous conveying process. There is a standard inlet and outlet valve for the silo. Once the hopper pump is fed, the silo is filled with the material being transported and all valves are closed. The former one has lower velocity, higher solid gas ratio and higher conveying pressure. Air or nitrogen is usually used to transport gas. The air source, which we call power, is usually provided by the compressor. Its main equipment is a large JSB pump. Its main characteristics are low conveying speed and little influence on materials. The latter type, namely rotary valve, adopts dilute phase positive pressure transmission, that is, the main equipment is QSB bin pump, and the air source used at the same time is air or nitrogen, and the gas source is provided by the compressor. It has the advantage of high flow rate, but it has no effect on the material flow rate.

3、 Features

Low flow rate, low wear, less crushing, low energy consumption and indirect transportation.

summary: Dense phase pneumatic conveying system Generally, air compressor is used as air source, such as bin pump, high-pressure rotary valve, screw pump, etc. As a feeding device. The material falls into the feeding device from the silo, and the high-pressure gas is fed into the pipeline of the conveying system, so that the gas and the material are fully mixed and the material is fluidized. The gas is then transported to the terminal storage tank through a high-pressure air stream, and then filtered through the separation device and discharged into the atmosphere. It's suitable for long-distance transportation.

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