SU976258A1 - Rotary furnace loading device - Google Patents

Description

(54) LOADING DEVICE FOR ROTATING FURNACE

one

The invention relates to the building materials industry and can be used in rotary kilns for the firing of lightweight aggregates (expanded clay, schungisite, alumina ash and gravel of concrete).

A rotary kiln loading device is known, which contains a pneumatic mixture piping with a nozzle located in the air channel of the fuel nozzle, and a separating valve, a cut-out is made in the lower part of the pneumatic mix pipeline, and the separating valve has an arc-shaped lid covering the cut-out and is installed inside the air nozzle of the fuel injector with the possibility of reciprocal mixing in the vertical plane (1.

However, using this device, it is impossible to supply granulated material to the furnace due to the insufficient diameter of the pipe {) opr "pneumatic mixture feed. Increasing the diameter of the pipeline pneumatic mixture.

placed inside the air channel of the fuel injector, will lead to an increase in the resistance to the blast air. At the same time, it is impossible to feed granulated material into a given furnace zone, since when the puff zone is removed from the hot end of the furnace, it will be necessary to increase the air flow through the pneumatic mix pipeline, which will not only overuse electrical power but also disrupt the nozzle operation. When the puff zone approaches the hot end of the furnace, the gap between the separating valve and the pipeline must be increased.

The closest in technical essence to the present invention is a charging device for a rotary kiln containing a fuel nozzle with an air channel and a device for feeding material into the working zone of the furnace, installed with the possibility of changing the slope relative to the longitudinal axis 2.

Claims (2)

A disadvantage of the known device is the impossibility of carrying out a directional feed to the given zone of the granulated 397 powdered material, which ultimately leads to a decrease in the quality of the finished product. The aim of the invention is to improve the quality of the finished product by supplying the graded dusting material to a given furnace zone. This goal is achieved by the fact that in the loading device of a rotary kiln containing a fuel nozzle with an air duct and a device for feeding material into the working zone of the furnace, installed with the ability to avoid inclination relative to the longitudinal axis of the furnace, according to the invention, the device for feeding material is completed in the form of a plate installed at the outlet of the air channel of the fuel injector. . A plate installed at the exit end of the airbag of the fuel nozzle reduces the rate of falling of the granulated material, which makes it possible by the air flow of the fuel nozzle leaving the air channel, change the direction of motion of the material along the furnace and use the kinetic energy of the moving air supplied fuel combustion for transporting granulated material. Placing the plate so that it can rotate around the horizontal axis allows changing the trajectory and range of the granular material. FIG. 1 schematically shows a device, a general view; in fig. 2 is a view A of FIG. 1. The device contains a loading chute 1, a fuel nozzle 2 with an air channel 3, at the output end of which, above its axis, a plate 4 is mounted rigidly fixed on axis 5. The axis 5 is attached to the body of the nozzle 2 by means of brackets 6 and is connected to This 7 is equipped with a lever 8, which ensures that plate 4 is rotated around a horizontal axis. The device works as follows. The granulated material flows through the chute 1 under the force of gravity onto the plate 4, flies away from it and is picked up by the air flow coming out of the air channel 3 of the fuel injector 2, which transports the material to the furnace. If it is necessary to supply granulated material to a zone located farther from the hot end of the furnace (from the place of material supply), for example, when removing the puff zone from the hot end of the furnace, by dragging 7 through the lever 8, the axis 5 with plate 4 is rotated around the horizontal axis . At the same time, plate 4 deviates upward from the horizontal plane, changing the trajectory and range of the granulated material, and when the pulling zone is displaced to the hot end of the furnace of the draft 7 through the lever 8, the axis 5 and plate 4 are rotated around the horizontal axis, reducing its angle of deviation from horizontal plane, which reduces the range of the material and changes its trajectory. The use of the proposed device will make it possible to more efficiently use powdered material due to its feeding in granular form and a given furnace zone. Claim device A rotary kiln boot device for production of expanded clay, containing a fuel nozzle with an air channel and a device for feeding material into the working zone of the furnace, which is installed with a possibility of changing, tilting relative to the longitudinal axis of the furnace, characterized in that to improve the quality of the finished product by feeding granulated dusting material in a given area of the furnace, the device for feeding material is made in the form of a plate installed at the outlet of the air channel of the fuel injector ki Sources of information taken into account during the examination 1. USSR author's certificate No. 563546, cl. F 27 B 7/32, 1976. 2. Boganov A, I. Mechanical equipment of cement plants. Mashgiz, 1961, p. 291-292.