SU107392A1 - Suction pneumatic conveying unit - Google Patents

Description

The invention relates to suction pneumatic conveying installations for unloading cement and other pulverized materials (soils, soot, apatite concentrate, alabaster, etc.) from loaded rail cars and other containers, including a self-propelled pick-up device with eoples and disks nitatel. a flexible pipe, a precipitation chamber with a filter and a tin gate, and a vacuum pump.

Known such installations are not widely used due to insufficient plant performance, due to the low concentration of transported material suspension, and low profitability of operation of such installations.

These drawbacks are eliminated in the pneumatic equipment of the invention, in which transportation is carried out with a high concentration of material in the air, approaching practically a continuous flow, like a liquid, without leaking from the outside of the air, due to direct impact

differential aoco / sweat pressure (vacuum)) and material1) ial.

This is achieved by installing a rotary water ring as a vacuum pump: a deep pump with a small volume of sucked air, and a suction, nozzle block, is made cc, 1 ss. for maximum approximation with the tank floor level.

The installation allows high-speed unloading of fine-diffuse dust-like materials at distances sufficient for their delivery to receivers located in the immediate vicinity of the 1: 1 unloading X cars and other containers.

The simplicity of the design of the entire pick-up device, as well as the system of air separation from the transported 1 ×) material flow obus / yvili small isec and small gaba | in the flow of sucked air.

FIG. 1 shows a general side view with a section along a flexible pipe, to an installation according to the invention operating in a car; in fig. 2 is a longitudinal section of the pick-up device with a separate view from the top of the feeder disks along the AA section (Fig. 2; Fig. 3 is a vertical longitudinal section of the settling chamber and a pump with a separate section but the BB of Fig. 3 connected to the settling chamber of the flexible pipe.

The suction unit of the pneumatic transport unit aspiration unit is a self-propelled uniaxial trolley / driven by individual electric motors through a worm gearbox for each wheel. The control of the remote pick-up device (not shown in FIG.).

In the front part of the device, a conventional pin-down hook 2 and horizontal scooping rims 3 of the feeder, rotating from the electric motor, and a spur gearbox are mounted. The suction nozzle 4 of the funnel 5 of the suction device has a spline; its shape at the working end and is located above the disks 3 with a maximum clearance. In the tail part of the nozzle funnel 5 there is mounted a rotary nozzle 6, to which is attached a flexible pipeline cement pipe bushing 7, going into a precipitation chamber. The settling chamber consists of a bunker 8, in the upper part of which fabric filters 9 are mounted with a manual or automatic device W for reverse blowing. At the bottom of the chamber, there is a fitting L for a rigid conduit 12 connecting the connecting chamber with the vacuum pump 13.

In the lower part of the slugging chamber in the housing 14, a high-speed unloading discharge cable 15 is mounted. The screw is equipped with a check valve 16 and a replaceable sleeve 17 inserted into the cylinder 18 to form a screw gate. . The drive is adapted from the individual electric motor 19. On the side wall of the housing 14 of the screw

The connecting chamber is fitted with a clamp 20 for connecting a flexible pipeline - cement guide 7.

A working vacuum in the installation is provided by a rotary water ring pump of deep vacuum with a small volume of suction air, type RMK.

Pumps of this type develop a vouum up to 97% and are stable in operation.

The time of creation of the working vacuum B in the installation should be ahead of the speed of movement of the suction material flow, since non-observance of the specified mode of operation of the installation results in the formation of plugs from the discharged material in the cement guide, the subsequent resorption of which is a waste of time, reducing the efficiency and profitability of the installation. The implementation of this mode is ensured by the appropriate calculation and selection of the type-size of the vacuum pump, the volume of the settling chamber and the cross section of the cement guide.

The operation of the installation proceeds in the following order.

When a trolley / pick-up device is placed into a railway car to be unloaded, the material is collapsed with pin-down rushitel 2 on the scooping rims 3 of the feeder, which feed it to the suction nozzle 4 of the funnel 5 cement air guide 7. The vacuum impact of the material stream is sucked into the cement guide and moves there. get into the connecting chamber, which is supplied by the screw shutter with a cantilever screw 15 through the check valve 16 and the receiving bin 1 into the tank warehouse, and the separated excess air that has penetrated into the installation system through leaks is sucked out through a fabric filter and rigid pipe 12 vacuum pump 13 to the atmosphere.

Subject invention

A pneumatic conveying suction unit for unloading pulverized materials, mainly cement, from loaded rail cars and other containers, including a self-propelled pick-up device with a nozzle and a disk feeder, a flexible pipeline, a settling chamber with a filter and a screw gate, as well as a vacuum pump, This is due to the fact that, in order to increase the productivity of the installation and ensure the transportation of the material through a pipeline with a high concentration approaching to a continuous flow, in It used as a vacuum pump a rotary water ring pump of high vacuum with a small volume of sucked atmospheric air, and the suction nozzle of the suction device is made flattened.

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