SU1041464A1 - Material line of pneumatic conveying systems - Google Patents

Abstract

MATERIAL PIPELINE PNEUMATIC TRANSPORT SYSTEMS mainly for the transport of bulk materials. f; erosnes vi-; Ch. F // // / 7 / / 7 / / / 7 / / // //// // 7 / f // - | g,. -T-. containing pipe and inserts coaxially installed inside it, made of dielectric material, is required to ensure that, in order to increase the reliability and safety of transportation, it is equipped with inserts made of electrically conductive between inserts made of dielectric material. The material, and the pipe consists of dielectric and electrically conductive devices, each of which is located opposite the insert with opposite conductive properties.

Description

The invention relates to pneumatic transport, in particular to pipelines of pneumatic conveying systems, in particular to pneumatic conveying of electrifying and self-igniting materials, and can be used in the chemical industry, nuclear energy, radiochemistry, non-ferrous metallurgy, and other sectors of the national economy.

Known material pipeline pneumatic transport system equipped with grounded electrodes mounted on its inner surface in the form of longitudinal ribs of certain sizes. And a certain location, which allows you to limit the area with which the discharge can occur, and, therefore, reduce the value of this discharge fl].

However, this design does not exclude the possibility of electrostatic discharge, therefore, it does not exclude the possibility of ignition of bulk materials. In addition, the ribs are a physical obstacle to the movement of bulk material. The hydraulic resistance increases and the likelihood of clogging of the material pipe increases.

Also known is the material conduit j of pneumatic conveying systems comprising a pipe and inserts coaxially mounted inside it, made of dielectric material f2].

In the specified material flow, spontaneous combustion of the bulk material is not excluded during transportation, since electrostatic discharge is possible due to the difference in the sizes of the contact surfaces with the bulk ~, material of the outer and inner tubes. In addition, such a material pro ·?

. water is unreliable due to the presence of zones (gaps between the inserts), where it is possible clogging with bulk material.

The aim of the invention is to increase the reliability and safety of transportation. ''This goal is achieved by the fact that the material pipeline of pneumatic conveying systems, containing a pipe and inserts made of dielectric material coaxially installed inside it, is provided with inserts between dielectric material, inserts of electric ¹ conductive material, and the pipe consists of dielectric and conductive pipes, which located with opposite properties.

VNIIIPI each 'from / opposite the insert of electric wires Order 7045/21

The drawing shows a diagram of the proposed material pipeline.

The material pipeline consists of an external "pipe, 1 and inserts 2 located in the pipe 1 coaxially with a clearance ^ The pipe 1 is made of composite pipes of equal size 3, 4 and 5, while the pipes. 3 and. 5 are made of a dielectric material (polyethylene) and the material is informed of a positive charge when moving it 10, ’a '; the pipe 4 is electrically conductive and gives the material a negative charge.

The inserts 2 are also made equal, with some of the inserts 2 made of electrically conductive material and located opposite the nozzles 3 and 5 (of the dielectric) of the pipe 1, the other part of the inserts is made of dielectric material and located directly opposite the nozzles 4 made of metal.

Along the length of the material pipeline, pipe 1 and insert 2 are located relative to each other in such a way that, in any section of the pipe 1 and insert 2, an unlike electrostatic charge is imparted to the bulk material: pipe 1 is negative, insert 2 is positive.

Material pipe works as follows.

Bulk material in the aer <^ mixture from the feeder (not shown) pos35 ”flattens into the annular gap between pipe 1 and inserts 2. During the movement of the air mixture, the formation and separation of electrostatic charges occurs. Bulk material is charged with one sign; com, and the pipe wall is opposite. The sign and the vertex of the charge depends on the physical and mechanical properties of the granular, material and pipe material.

For example, the pipe 3 pipe 1 is made of a material that imparts a negative charge to the bulk material. As a result of this, the electric charge, “bulk material moving near the pipe 1, is neutralized”. The same “charge” is neutralized in the material layer, “moving near the inserts 2. Since the parallel sections of the outer and inner pipes are made of different material, it happens simultaneously and cross-section of the material pipeline charge neutralization *

The use of the proposed Breguenia reduces the rijnosti and increases the reliability of material sorting.

Circulation 949 Subscription

Branch PPP Patent, Uzhhorod, vul. Project, 4

Claims (1)

MATERIAL PIPELINE OF PNEUMATIC TRANSPORT SYSTEMS mainly for transporting bulk materials, containing a pipe and inserts coaxially installed inside it, made of dielectric material, revealing that, in order to increase the reliability and safety of transportation, it is equipped with inserts made of dielectric material, inserts of conductive material, and the pipe consists of dielectric and electrical conductive tubes, each of which is located opposite the insert with the opposite important conductive ’properties. / ⁴ Aerosol mixture ^ - ^ 'hs ------- I. · w .4-. -4- / ~ | 4 -'.- h *. 4f- · · 4 - ///// 26 /// // // // TO · / tyKHlCb ο "SU .... 1041464 SS Aerosmix V4. , "* * · * · · · # * ·’ TF Azrosmash>