SU831672A1 - Vertical bucket-type elevator - Google Patents

Description

one

 The invention relates to devices for transporting bulk materials and can be used for molding sands in the foundry industry.

A vertical bucket elevator is known, comprising a housing with driving and driven drums located in it, a conveyor belt with buckets, loading and unloading trays and a shoe placed in the lower part of the housing, provided with a curvilinear working surface and bottom

However, when working with a wet molding mixture, material sticks to the working surface of the shoe, which leads to a decrease in the efficiency of the elevator.

The purpose of the invention is to improve the efficiency of the elevator during the transportation of wet bulk material.

The goal is achieved by the fact that in a vertical bucket elevator containing a housing with driving and driven drums located in it, a conveyor belt with buckets, a cutting unit and a discharge chute and a shoe placed in the lower part of the hull, fitted with a curvilinear

the working surface and the bottom, the working surface of the shoe is made of separate rods installed parallel to the axis of the driven drum and having adjacent contiguous surfaces of adjacent rods through incisions, and in the internal cavity of the shoe between its bottom and the curvilinear working surface there is an air inlet pipe, and from the side opposite to the air inlet nozzle, a spring-loaded butterfly valve is installed above the loading tray; .

FIG. 1 shows an elevator, general view; on fip. 2 is the same, section A-A in FIG. one; in fig. 3 - top view of the bars of the working surface of the shoe; in fig. 4 is a cross section of rods in FIG. 1, weel; in fig. 5 is a sectional view of the point of attachment of the rods, unit II in FIG. 2

five

Vertical bucket elevator includes body 1, leader 2 and slave 3 drums, conveyor belt 4 with buckets 5, loading 6 and unloading 7 trays, shoe 8 with working surface b and diniyum 1 O.

Claims (1)

0 The working surface 9 is made of bars 11 installed parallel to the axis of the driven drum, 3 and having through-notches 12. In the inner cavity 13 of the shoe 8 an air supply pipe 14 is placed, and a flap 15 is installed above the loading tray and is spring-loaded and rotatable. The rods 11 can be round or multi-faceted, and the through notches 12 can be made, for example, perpendicular to the axis of the adjacent rods 11. The rods 11 are located in the slots of the guides 16, made in the form of an I-beam and fixed on the shoe 8 with screws 17, and on the case 1 - screws 1 8. The air inlet pipe 14 is equipped with a valve 19 and is connected to a source of compressed air. The outlet 20 of the inner cavity of the 13. Bashmak 8 is connected by a pipe 21 with a hole in the loading b tray. The fastening of the nozzle 21 to the loading tray 6 is made by screws 22 and 23. The rods 11 are fixed relative to the guides to 16 screws 24 screwed into the crocodile 25 on the body 1 and nuts 26. Sealing gaskets are installed at the junction points of the guides 16 of the body 1 of the shoe 8 27. The zasloik 15 with the joint hinge 28 is fastened with the loading bin tray and equipped with a lever 29 and a spring 30 The inner cavity 13 of the shoe 8 is made of variable cross section: the largest is at the lowest point of the elevator, at the site of the largest accumulation of material. The depth of the notches and the total area of the holes formed by the adjacent rods is chosen depending on the particle size distribution of the material being transported and its flowability and is on average 1-3 mm. To prevent dusting, the housing 1 is connected to the exhaust ventilation by a nozzle 31. The vertical bucket elevator operates as follows. After the elevator is turned on, the bulk material is poured into the shoe 8, which falls into the buckets 5. The conveyor belt 4 moves the buckets 5 s. Of bulk material to the discharge tray 7. Material, not buried in buckets 5, accumulates in the shoe 8 of the elevator. Compressed air, which constantly enters the internal cavity 13 of the poppy of the bakka 8, flows through the holes formed by the through notches of the bars 11 and aerates the material spilled. Aeration causes the PCB to do liquefaction of the material in contact with the working surface 9 of the shoe 8, and prevents it from sticking. The position of the valve 15 is determined by the rem forces: the force of tension of the spring 30, the weight of the mother, teria: la, passing through the valve 15, and the force of pressure of the compressed air moving along the internal cavity 13 of the shoe 8. The tension regulation of the spring 30 is thus so that when the material is loaded with the elevator, the flap 15 is pressed against the loading tray 6, all the air passes through the working surface 9 of the shoe 8. When the material supply is stopped, the air opens the flap 15, while In the inner cavity 13 of the shoe 8, the pipe 21 is blown back to the elevator. The flow of compressed air blown into the internal cavity 13 of the shoe 8 is controlled by a valve 19. When using the proposed device, sticking of material on the working surface of the shoe is eliminated, which leads to an increase in the operating efficiency of the elevator, as well as to a reduction in the energy consumption required to transport the material, besides , to increase the reliability and performance of the elevator. Invention Formula Vertical bucket elevator, housing with driving and driven drums located in it, conveyor belt with buckets, loading and unloading trays and a shoe rammed in the lower part of the housing, provided with a curvilinear working surface and bottom, characterized in that, in order to increase the efficiency of the elevator during the transportation of wet bulk material, the working surface of the shoe is made of separate pipes installed parallel to the axis of the driven drum and having There are through-cut notches in the contacting lengths of the surfaces of adjacent rods, in which the air inlet pipe is placed in the internal cavity of the shoe between its bottom and the working surface, and on the side opposite to the air inlet spring-loaded rotary valve is installed, overlapping the internal cavity of the shoe. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 178296, cl. B 65 G 17/12, 1964 (prototype).