SU1381036A2 - Hopper arrangement - Google Patents

Abstract

The invention relates to bunker devices for bulk materials prone to arching, and can be used in microbiological, chemical and food industry. The purpose of the invention is to save the time of discharge and increase the uniformity of the expiration of the material being discharged. The bunker device includes a housing 1 with an outlet. In the case of the exchange, an elastic shell is made in the form of horizontal sections, each of which is rigidly fastened with the upper edge, with the lower edge of the upper edge, by means of flexible couplings 3 clips, and with 4 ring for stretching the shell. The height / g of each horizontal section is determined from the ratio / g: 0.4 (Y, where d: is the diameter of the lower edge of the section. When this ratio is performed, the material is affected only in the zone of formation of the dynamic roof, which given force applied to the ring 4, leads to the most uniform outflow of material. This property weakly depends on the angle of inclination of the bunker walls.

Description

The invention relates to bunker devices for bulk materials prone to arching, and can be used in the microbiological, chemical, food industry, and is in addition to the basic author. St. Ko 1335512.

The purpose of the invention is to reduce the unloading time and increase the uniformity of the expiration of the discharged material.

The choice of the height of the sections of the elastic sheath within the specified limits makes it possible to effectively influence the dynamic arch of the material being unloaded.

FIG. 1 schematically shows a bunker device; in fig. 2 is a graph of the discharge time of the bulk material as a function of h / d; in fig. 3 is a graph of the uniformity of discharge as a function of the h / d ratio.

The bunker device comprises a housing I with an outlet. An elastic sheath is placed in the body, made in the form of horizontal sections 2, each of which is rigidly fastened with the upper edge of the upper body and fastened with flexible links 3 to the lower edge 4 of the outer sheath by means of flexible links 3. The height of each horizontal section, L, is determined from the ratio, / 1,, 4a ,, where d, is the diameter of the lower edge of the section.

The device works as follows.

The actuator (not shown), by moving the ring 4, pulls the flexible couplings 3, which simultaneously stretch all the elastic sections 2 relative to the housing 1, resulting in one

0

0

five

0

Temporary collapse of the hanging (adhering) material along the entire height of the bunker.

The flow is not influenced by the configuration or the angle of inclination of the walls of the bunker, but by the shape of only that part of its walls that is in the zone of the dynamic roof. The size of the zone of the dynamic dome depends on the diameter of the outlet of each section 2 of the elastic sheath. In the case when the height of section h is greater than the height of the dynamic roof, equal to 0.4 d, the collapse of the adhered material is ineffective.

The plots in FIG. 2 and 3, obtained as a result of experiments on the unloading of a difficult-flowing microbiological synthesis product - protosubtilin with an equivalent diameter of 40 microns, show that the efficiency of discharge decreases sharply when the condition 4i / is violated. This effect does not depend on the angle of inclination of the walls of the bunker. FIG. 3 The following notation is used: Q is the flow rate of the bulk material, AQ is the deviation of the flow rate from the average value.

Claims (1)

Invention Formula Bunker device auth. St. No. 1335512, characterized in that, in order to reduce the unloading time and increase the uniformity of the discharge of the discharged material, the height of each horizontal section is determined from the ratio L, 0.4a ,, where (i, is the diameter of the lower edge of the section. c (c / 3 ffff -7c5 D / 0.2 0, b OM 0.5 yr d I FIG. Z og og a O.7 / fg f.E