SU787316A2 - Hopper for loose dielectric materials - Google Patents

Description

one

The invention relates to the storage and unloading of bulk materials, in particular, to dielectric materials.

According to the main author. St. No. 610757 is a known hopper for bulk dielectric materials, comprising a housing, an outlet chute, and a gate, made in the form of two electrodes connected to a power source, one of which is an outlet cylindrical chute isolated from the housing, and the other is a rod mounted on axes of estrus 1.

The disadvantage of the known bunker is that bulk materials with some dielectric conductivity and therefore conduction current flows between the leakage and the rod through the bulk material, which leads to an unjustified loss of energy and simultaneous reduction of electric forces. These undesirable effects are enhanced by increasing the moisture content of the bulk material.

The purpose of the invention is to reduce energy consumption.

For this, the bunker is equipped with a perforated electrically insulating cylinder installed in its chute, in which the rod is located, at the same time a 30

measures perforation cells smaller than the particle size of the material.

The drawing shows the proposed bunker.

Claims (2)

The bunker contains a housing 1 and a cylindrical outlet chute 2, made of electrically conductive material and isolated from the housing 1. Inside the chute 2, an electrically conductive rod 3 is installed along its axis. The tube 2 and the rod 3 are connected to the source 4 of electricity and play a role in this electrical system. electrodes. The rod 3 is covered by a perforated cylinder 5 of electrically insulating material. The perforation cell sizes are smaller than the particle size. This aspect ratio prevents contact between particles through the perforations of the cylinder. When applied to the chute 2 and the voltage rod 3, a non-uniform electric field is created between them, which charges the particles of the material with a polarized charge. In the areas of chute 2 — cylinder 5 and cylinder 5 — rod 3, the particles are in contact with each other. However, the perforated cylinder 5 excludes contact between particles inside and outside the cylinder. Thus, conduction current 1e through cylinder 5, i.e., is prevented. the electric circuit for the conduction current between the leak: 2 and the rod 3 is open by the cylinder 5. At the same time, the electric field extends throughout the interelectrode space, including in the perforation cells of the cylinder 5. When the electrical forces interact, the particles of the material are oriented along the lines of force in the areas between A leak and a cylinder and between the cylinder and the rod 3. The orienting forces increase the internal friction of the material and block the flow of material flowing from the hopper. The perforated cylinder can be mounted directly on the surface of one of the electrodes (chute or rod). When relieving stress, the material freely spills from through the chute. 2. Installing a perforated cylinder in the interelectrode space transforms the conduction current and thus reduces the power consumption of the process. All other things being equal, the required power of the high voltage source is reduced by 40-70% depending on the properties of the bulk material being reversed. Claims of Invention Bunker for bulk dielectric materials according to auth.St. 610757, due to the fact that, in order to reduce energy intensity, it is equipped with a perforated electrically insulating cylinder installed in its leakage, in which the core is located, with this size of perforation cells smaller than the particle size of the material. Sources of information taken into account in the examination I. USSR author's certificate 610757 Cl. In 65 G 65/30 for 1976 (prototype).