SU1000356A1 - Apparatus for introducing material into pipe of pneumatic transport unit - Google Patents

Description

(54) DEVICE FOR INPUT OF MATERIAL INTO THE PIPELINE PNEUMATIC INSTALLATION

one

The invention relates to a pneumatic conveying system, namely, a device for introducing material into a pipeline of a pneumatic conveying installation.

Devices are known for introducing bulk materials into a horizontal pipeline of an injection pneumatic conveying installation, comprising an inclined loading nozzle connected to the upper part of the pipeline and mounted inside the pipeline, where a horizontal reflecting screen is placed at the point of input of the material, in which there is a cavity communicated with a compressed air source located outside the pipeline, and the top of the screen is perforated 1.

The disadvantage of this loading device is that the material enters for transportation in an unprepared state, not aerated with air and, as a rule, a part of the material falls to the bottom of the material pipeline, and for its liquefaction with air and entrainment to the pipeline, additional costs of air flow are necessary.

A device for introducing material into a pipeline of a pneumatic transport installation is known, comprising a mixing chamber connected at one end to a source of compressed gas, and at the other through

5 confused-diffuser pipe with a pipe and a loading pipe with a screw located along the longitudinal axis of the mixing chamber 2.

A disadvantage of this device is also the fact that the material is supplied in an unprepared state for pneumatic conveying, which causes it to settle to the bottom of the pipeline at the loading point.

The purpose of the invention is to increase the reliability of the work

Claims (2)

The goal is achieved by the fact that, in the device for inserting material into the pipeline of a pneumotransport installation, characterized by the aforementioned signs, it is equipped with a sleeve installed coaxially with a screw that is connected at one end to a source of compressed gas and has at the other end directed in the direction opposite to the pipeline nozzle, and a flow divider mounted in the mixing chamber along its longitudinal axis opposite the nozzle. The flow divider on the side facing the nozzle is made with a surface having a dovetail shape in longitudinal section, and with a cone-shaped surface with an opposite section. The drawing shows the device, the overall appearance. The device contains a mixing chamber 1, which is connected to the transport pipeline 2 through a confusor-diffuser nozzle 3. The sleeve 4 is located along the axis of the chamber 1 with a nozzle 5 at the end directed towards the air flow, and at the opposite end of the sleeve 4 is connected to a source of compressed gas (not shown). Inside the sleeve 4 there is a housing 6 with a screw 7. The screw 7 is connected to a loading nozzle 8, in which there is a material to be transported. In front of the open end of the nozzle 5 there is a cone-shaped divider 9. The device works as follows. Transported material from the pipe 8 through the chute enters the body 6, where with a screw 7 is fed to the open end of the sleeve 4. Air (gas) from the source passes into the cavity between the inner wall of the sleeve 4 and the outer wall of the body 6, and when leaving the mixing chamber 1 picks up The material that is fed by the screw 7. When exiting the nozzle 5, the thick dust-air flow is displaced with the air flow, directed to the divider 9, when meeting with the turbulent vortices the dust-air flow is homogenized, distributed throughout the section NIJ mixing chamber 1. Form splitter 9 is performed in such a manner that its surface facing toward the conveying air flow has a cone shape in cross section, allowing air flow to flow around the guide it, without creating turbulence after SEB. On the opposite side, the cross-sectional surface has the shape of a dovetail, which with its top is directed toward the center of the nozzle 5. When the diffuser 9 bends around with air, a resolution is created behind it that contributes to a better exit of the material from the nozzle 5. The air that bends around the divider 9 prepared for transportation, and through pipe 3 is fed into transport pipeline 2 for further transportation. The use of the proposed device will increase the reliability and stability of the pneumatic conveying, since the bulk material is distributed evenly by the turbulent vortices over the entire cross-section of the dust-gas flow without falling to the bottom. In addition, when moving a homogeneous flow, the hydraulic resistance decreases as it moves and, consequently, the energy consumption for transportation. Claim 1. A device for introducing material into a pipeline of a pneumatic conveying installation, comprising a mixing chamber connected at one end with a source of compressed gas, and at the other through a confusorifluid diffuser nozzle with a transport conduit, and a loading nozzle with a screw located along the longitudinal axis of the mixing chamber, characterized in that, in order to increase the reliability of operation, it is provided with a sleeve mounted coaxially to the shneck, connected at one end to a source of compressed gas and having rugom its end directed oppositely to the transport conduit, nozzle, and flow splitter mounted within the mixing chamber along the longitudinal axis of the sleeve opposite the nozzle. 2. The device according to claim 1, characterized in that the divider on the side facing the nozzle is made with a surface having a dovetail shape in longitudinal section, and on the opposite side with a conical surface. Sources of information taken into account during the examination 1. USSR author's certificate No. 529984, cl. B 65 G 53/40. 2. For France of France No. 2275390, cl. B 65 G 53/28, 1979 (prototype).