SU821347A1 - Pneumatic transport line for moving cargoes - Google Patents

Description

(54) PNEUMATIC TRANSPORT LINE FOR CARGO MOVEMENT

The invention relates to installations of pipe pneumatic transport, as well as to other types of transporting devices with the movement of goods on an air cushion.

A known construction of a container piping pneumatic transport of industrial goods in which trolleys (containers) are applied, which are supported around the perimeter with rollers on the pipeline and the rail attached to the internal surface of the pipeline. The ends of the trolleys are round, with a diameter slightly less than the internal diameter of the pipeline and are equipped with seals - cuffs. The trolleys move due to the pressure of the air supplied by the pump unit; the trolleys are loaded and unloaded outside the pipeline with special devices. After the loading area and in front of the unloading area, sluice gates 1 are made.

The disadvantages of this design is the difficulty of resolving possible congestion in the pipeline, the complexity of the support devices of the trolleys, a large number of guide rollers.

The purpose of the invention is to increase the reliability of the pneumatic conveying line.

The goal is achieved by the fact that the containers are provided with pipelines located along them with controlled

flaps and have supports, made in the form of a case, connected through seals with a frame having lining of antifriction material, with the supports connected by a flexible hose to the pipeline of the container, and a valve is installed in the case of the support.

FIG. 1 shows a diagram of the pneumatic transport line; in fig. 2 is a cross section of the pipeline; in fig. 3 - connection diagram of intermediate pumping units;

novok; in fig. 4 - container, rear view; in fig. 5 - container, side view; in fig. 6 side support of the container; in fig. 7 shows a valve control circuit for self-dissolving congestion. The line contains the pipeline 1, the loading and unloading device 2, the containers 3, the head and intermediate pumping stations 4. The circular pipe 1 has two guides 5 in the form of angles located in the lower part. Guides 5 serve

both for receiving loads from the container supports 3 and for the direction of movement of the containers 3. For transporting goods over large distances along the pipeline 1, several pumping stations 4 are installed before connecting the discharge pipeline 6, at each of them a bypass channel 7 is connected with the atmosphere or the suction piping of the pumping unit 4, and the airlock 8, to which air from the auxiliary pumping unit is supplied with a higher pressure and a lower flow rate. The container 3 for moving cargo has a trapezoidal shape in cross section, loading is performed from above, unloading through the opening bottom. On the frame 9 of the container 3 there are fixed pipelines 10 with controllable flaps 11, supports 12, guide rollers 13, brake runners 14 and buffer devices 15. At the back of the frame 9 there is a sealing device 16 that senses the air pressure in the pipeline 1 and transmits the driving force on the frame 9 of the container 3. In the sealing device 16 there are two openings for supplying air to the air through the pipelines 10 to the supports 12. The pipelines 10 are closed at the front with controllable gates 11 that automatically open during loading, unloading and self-cleaning pipeline 1 from congestion to ensure the unimpeded passage of air through pipeline 1.

The side support 12 of the container 3 is rectangular or oval in shape, fastened to the frame 9 on a linkage system, an elastic suspension or on a balance bar. Bearing 12 consists of a housing 17, into which air is supplied through a flexible pipe 18, a movable frame 19, a flexible seal 20 connected to the housing 17 and a frame 19, anti-friction linings 21 and a valve 22 for stabilizing the lifting height of the housing 17 of the support 12. Frame weight 19 and the elasticity of the seal 20 is chosen such that, at a nominal pressure in the cavity of the housing 17, air leaks from under the frame 19 of the support 12 are minimal. The purpose of the frame 19 with overlays 21 of antifriction material is to support the case 17 when the container 3 is moving at a constant distance from the guides 5 and to facilitate the movement of the container 3 when the pressure in the pipeline drops. For self-cleaning of the pipeline 1 in the formation of congestion serve the valve 11, located in the pipelines 10 of the container 3, lever systems 23, connected to the front buffer 15 of the container 3 and moderators 24.

The device works as follows.

Under the action of the pressure of the air generated by the pumping units 4, the containers 3 are raised on the air

cushions and move along the pipeline 1. The lifting height of the container 3 is stabilized over the guides 5 and the pressure differential between the front and rear volumes relative to the container 3 by means of a relief valve 22 adjusted to the nominal differential and kinematically connected with the air carrier frame 19. When the container 3 is moving, the frame 19 slides along the guides 5 of the main pipeline 1, therefore, interchangeable patches 21 of antifriction material, for example a self-lubricating material, are installed along its entire perimeter. Considering that the weight of the container 3 is completely perceived by the air liner, the amount of resistance to movement is mainly determined by the small frictional force between the guides 5 of the pipeline 1 and the lining 21 of the frame 19 of the support 12, which allows the container 3 to move at a speed approaching air velocity Pipe 1. When the container 3 is accidentally stopped in the pipe 1, it is overtaken by another container 3 moving behind it and rests on the frame 19 of the first buffer 15, which, moving, opens the valves 11 into the pipeline x 10. At the same time, the total air pressure is supplied to the first container 3 and sufficient force is created to move it along the pipeline 1 even in the presence of a defect in the supports 12. After the first container 3 starts moving, the valves 11 of the pipelines of the second stationary container 3 are closed 24 not immediately, but after a certain period of time sufficient for the first container 3 to gain the necessary speed and get out of the jam zone. After the pipeline shutters 11 are closed in the second container 3, it will start moving and exit the mash zone, then the third container 3 will start moving, and so on. Thus, congestion caused by the unforeseen stopping of pumping installations by 4 or jipygy reasons is self-dissolving. The braking of the containers 3 in the loading zones is carried out with movable brake lines (not shown) located in the lower part of the pipeline 1, simultaneously with the braking, in order to reduce the braking distance with special cams, the valves 11 of the pipelines of the containers 3 are opened, creating a zero pressure drop.

This pneumatic conveying line ensures the self-dissolving of congestion in the pipeline, allows for container trains, improves the reliability and durability of the entire line compared to the existing ones, and allows you to move loads over long distances.

Claims (1)

Invention Formula A pneumatic conveying line for the movement of goods, comprising a main pipeline, containers, guiding, unloading and loading devices, pumping installations, characterized in that, in order to increase reliability, the containers are provided with pipelines located along them with controlled dampers and have supports made form of housing connected through seals with frame with lining / of antifriction material, and the supports are connected by a flexible hose to the pipeline of the container, and a valve is installed in the housing of the support. Sources of information taken into account during the examination 1. Galibin N. P., Pripadchev V. Ya. Efficiency of pipeline container transport. -. "Industrial Transport, 1974, No. 12, p. 16-21. fe. / IG 1L / FIG.