SU971749A1 - Apparatus for conveying loose materials - Google Patents

Description

The invention relates to pneumatic conveying, namely, devices for moving bulk materials, and can be used when loading and unloading bulk materials such as cement, grain, etc.

A device for transferring bulk materials is known, comprising a container connected via controlled valves with pipelines in communication with the atmosphere, with sources of vacuum and compressed air, and installed in series with the intake and inlet nozzles, the adjacent ends of which are placed in the casing and the last of which is fixed to the bottom parts of tank 1.

The coaxial connection of the pipes connected by the casing is based on the property of bulk materials during dumping to be deposited in the form of a cone, the slope of the generatrix (angle of repose) which characterizes the resistance of the material against crumbling under its own weight, and reduces the dimensions of the device the process of filling-unloading of the intake organ with the entire periphery of the entrance and exit, causes

even and slowed wear, and, consequently, increasing the service life.

The purpose of the invention is to increase the service life of the device.

This goal is achieved by the fact that the inlet and inlet nozzles are installed coaxially, and between their ends at an equal distance from the top 10 and the bottom walls of the casing there is a disk, the diameter of which is larger than the outer diameter of the nozzles.

The height of the casing is determined from the ratio

15

And (D - d) tg + sG,

where D is the diameter of the disk;

d is the outer diameter of the pipes; n - the angle of repose

20

relocatable material; SG - thickness of the disk. FIG. 1 shows schematically the proposed device, a general view; in fig. 2 - the node in FIG. one.

25

Claims (2)

The device consists of a tank 1 equipped with an inlet nozzle 2 and an intake nozzle 3 of the same diameter, interconnected by a casing 4, on the floor 1e of height of which a disk 5 is installed, the diameter of which is smaller than the inner diameter of the casing but larger than the diameter of coaxial nozzles 2 and 3. at the end of the prisoners in a sealed enclosure, they have open annular cuts 6, the height of which is limited by the end walls of the casing and the disk 5, the bone 1 is provided with pipes 7 and 8 connected to a vacuum source (not shown) through the valve 9, t pipelines 7 and 10 of supplying compressed air through valve 11, pipe 12, which communicate with the atmosphere through valve 13. On the tank 1 of the mouth. A gauge 14 is connected to the lamp 15. The pressure is monitored with a vacuum meter 16. The device operates as follows. Using a crane, the device is placed on the surface of the bulk material, for example, in the vessel's hold, in the gondola, including vacuum through pipelines 7 and 8 through the valve 9. The filling of the cutout 6 with the material through the nozzle 2 begins, through the gap between: 5, through the notches 6 in the port 3. When the material level reaches the level gauge 14, the latter triggers and turns on the lamp 15, the vacuum is turned off and the tank through the pipe 12 through the valve 13 is connected to the atmosphere. Then the crane lifts the device and transfers it to the receiving bunker, and at a pressure in the tank, the outflow of material does not occur as the diameter of the disk 5 (Lig.2) D P, where P is the diameter of the base truncated, cone, diameter of the base which is equal to the diameter d of the nozzles, and the angle VJ at the larger base is equal to the angle of the natural braid of the material being moved, O is the thickness of the discs I is the height of the sealed casing The resulting double locking between the upper end wall of the hermetic casing and the gate, between the gate bottom end wall of the housing) samozapirayuschegos increases the reliability of the device. When compressed air is supplied through pipelines 10 and 7 through valve 11, the tank is emptied, the end of emptying is established by the pressure drop in the tank, after which the valve 11 is closed and valve 13 is opened, communicating the tank through pipeline 12 with the atmosphere. The device is then transported by a crane to the place of filling, the vacuum is turned on, and the cycle is repeated. The use of the invention in the loading and unloading of bulk materials increases the service life of the installation for the transfer of bulk materials. Claim 1. Device for moving bulk materials, containing a container communicated through controlled valves with pipelines communicated with the atmosphere, with sources of vacuum and compressed air, and successively intake and inlet nozzles, the adjacent ends of which are placed in the casing and the last of which is fixed on the lower part of the container, characterized in that, in order to increase the service life of the device, the inlet and intake connections are installed coaxially, and their ends are at equal distances from the upper and izhney walls of the housing a disc whose diameter is larger than the outer diameter of the pipes. 2. A device according to claim 1, characterized in that the height of the casing is determined from the ratio H (D - d) -tg to, c9, where D is the diameter of the disk; c1 is the outer diameter of the pipes; Y is the angle of repose of the material being moved; S is the disk thickness. Sources of information taken into account in the examination 1. USSR author's certificate №575296, cl. B 65 G 53/16, 1977. // w T-TT. FIG. g