SU1052455A1 - Pneumatic feeder for conveying bulk material - Google Patents

Abstract

PNEUMATIC FEEDER FOR TRANSPORTING THE BULK MATERIAL, comprising a housing with a feed funnel, a shutter and an aero floor, a mixing chamber, an outlet diffuser and a compressed air supply pipe with a nozzle at the outlet, located coaxially with the outlet diffuser above the aerofaxion, in order to achieve the aim, in order to achieve the aim, to achieve the aim of the outlet, coaxially with the outlet diffuser above the aerofaxion, in order to achieve the aim, in order to achieve the aim of the outlet, coaxially with an outlet diffuser above the aerofaxion, with the outlet air nozzle located coaxially with the outlet diffuser above the aerofaxion, in order to achieve the aim of aiming, in order to achieve the aim of the air diffuser coaxially to the diffusers above the aerospace, in order to achieve the aim in order to achieve the aim of the air outlet from the air diffuser coaxially with the outlet diffuser above the aerofaxion, with the purpose of directing the air supply to the air diffuser coaxially with the outlet costs by maintaining the optimum concentration of the material air mixture, it is equipped with a purge chamber covering the mixing chamber, which is made with an annular nozzle, a sensor . Pressure communicated to the cavity of the diffuser outlet and a control valve mounted on the compressed air pipe padachi to communicate its cavity to purge the cavity (chamber A and associated with the pressure sensor Cj ff7r76 / t / w ate 4; JV CO

Description

This invention relates to the pneumatic transport of bulk materials, such as cement.

A pneumatic feeder for transportation is known. bulk material, comprising a housing with a feed funnel, a gate and an aero floor, a system of coaxial nozzles, a mixing chamber, an outlet confuser-diffuser section and a compressed air supply pipeline 1.

A pneumatic feeder for transporting bulk material is also known, comprising a housing with a feed funnel, a shutter and aerodynamics, a mixing chamber, an outlet diffuser, and a compressed air supply pipe with an outlet nozzle located coaxially with the outlet diffuser above the aerospace 2.

The disadvantage of these feeders is the high specific energy consumption for material transportation.

The purpose of the invention is to reduce the specific energy consumption by maintaining an optimum concentration of the material-air mixture.

The goal is achieved by the fact that a pneumatic feeder for transporting bulk material, comprising a housing with a feed hopper, a shutter and an aerodistrial, a mixing chamber, an outlet diffuser and a compressed air supply pipe with an outlet nozzle coaxially with an outlet diffuser above the aerodrome, is equipped with a purge chamber a mixing chamber, which is made with an annular nozzle, a pressure sensor, communicated with the cavity of the outlet diffuser, and a distribution valve installed on the valve boprovode supplying compressed air to communicate its cavity with the cavity of the purge chamber and associated with the pressure sensor.

The drawing shows a pneumatic feeder for transporting bulk material.

The pneumatic feeder has a housing 1, a feed funnel 2, a shutter 3, an air floor 4, a mixing chamber 5, an output diffuser 6, a compressed air supply pipe 7 with a central nozzle 8 at the outlet.

The pneumatic feeder is provided with a purge chamber 9, surrounding the mixing chamber with an annular nozzle 10, pressure sensors 11, made in the form of a spring-loaded piston 12, on the rod of which the valve 13 of the distribution valve 14 is fixed.

The output diffuser 6 is connected to the transport pipeline 15.

The operation of the feeder is carried out as follows.

Through the feed funnel 2, the bulk material enters the cavity of the pneumatic feeder. Compressed air is supplied under the airfoil 4, which causes the material to become fluidized. Pipeline 7 is supplied with compressed air through the central nozzle 8. The material-air mixture enters through the mixing chamber 5 and the diffuser 6. into the transport pipeline 15, through which it further moves to the place of reception of the material. With an excessive increase in the concentration of the material-air mixture in the transport pipeline 15 and the occurrence of material in it, the pressure in the diffuser rises. At the same time, the pressure sensor unit 12 is moved, compressing the spring and acting on the spool 13, which opens up access of compressed air to the annular nozzle 10 and reduces the flow of compressed air into the central nozzle 8. As a result, the concentration of the material-air mixture at the outlet of the feeder is equalized to the optimum , and the occurrence of material in the transport pipeline 15 does not occur. Since the process of pneumatic transportation of material in the pipeline is unstable, the pressure sensor 11 and the spool 13 of the distribution valve 14 operate in an oscillating mode and automatically differentiate the supply of compressed air to the nozzles 8 and 10, thereby ensuring that the material is kept at an optimum concentration level. air mixture to transport.

The use of the invention makes it possible to reduce by 15% the specific energy consumption per 1 ton of transported material by maintaining the optimum concentration of the material-air mixture at the exit from the feeder.

Claims (1)

PNEUMATIC FEEDER FOR TRANSPORTATION OF SY- PUCHEGO material containing cor- pus ¹ with an addition funnel and gate aerodnischem, a mixing chamber outlet diffuser and the compressed air supply conduit with the nozzle outlet arranged coaxially with output cone aerodnischem above, characterized in that, to reduce the specific energy consumption by maintaining the optimal concentration of the material-air mixture, it is equipped with a purge chamber, covering the mixing chamber, which is made with an annular nozzle, a pressure sensor in communication with the cavity of the output diffuser, a control valve mounted on the compressed air pipe with the possibility padachi soobsche- j Nia its cavity with the cavity of the purge chamber and connected to a pressure transducer. SU „„ 1052455 <»» >> »·> *