SU1688940A1 - Apparatus for dynamic air-dry concentration of materials - Google Patents

Abstract

Invention m. used in mining, chemical, construction and other industries. The purpose of the invention is to increase the efficiency and quality of enrichment. To do this, at the outlet of the nozzle 18 for discharging a small product of a vertical vibroclassifier (VC) 14, an aero classifier is installed. It is designed as an additional expansion pipe (PT) 19, communicated with the outlet of the nozzle 18 by a high pressure fan, and installed at the outlet of the PT 19 chamber (K) 20 of the classification with sequentially installed 10 in the lower part of the no-direction from PT 19 bins 23. The material enters the PT 3 through the nozzle 2, moves under pressure from the high-pressure fan 1 to the separation chamber K 4, and hits its fender shield 12c with a saw-tooth surface bent toward the center. With the help of the vibration exciter 13 K 4 and VK 14 installed on the outer side of the shield 12, they reciprocate. The material enters VK 14, where it is divided into fractions. Part of the fractions through pipe 18 and PT 19 is transported to K 20. To remove dust particles, suction diffusers 11, 17, 22, and 10 of the aspiration system are installed, located respectively in K 4 in front of shield 12, between stepped partitions and VK 14 screens, in the upper part K 20 and at the end portion of the PT 3. In this case, the end portion of the PT 3 from the side of the diffuser 10 is perforated. Before going to K4 and 20 respectively. PT 3 and 19 are equipped with ventilation shafts 5 and 21. On PT 3 and the inner walls K 4 between the diffuser 10 and the shaft 5, transverse partitions are installed in a staggered order. 5 hp ff, 4 ill. Od B oststsratsionnuyu / 7 system u Ј О O 22

Description

Riga.1

: YugOG

The invention relates to installations for air-dry enrichment of materials and can be used in construction, agriculture, chemical and mining industries.

The purpose of the invention is to increase the efficiency and quality of enrichment.

FIG. 1 shows a plant for dynamic air-dry enrichment and a classification device for this plant, a general view; h of fig. 2 is a section A-A in FIG. one; in fig. 3 - section B-5 in FIG. 1; in fig. 4 shows a section B-B in FIG. one.

The installation for dynamic air-dry enrichment of materials consists of a high-pressure fan 1, a charging nozzle 2, embedded in the accelerating tube 3, a separating chamber 4 with a vent 5 installed at the inlet of the separating chamber, transverse partitions b and 7 in the form of annular stops stepped on the outer surface of the pipe and the inner surface of the separation chamber, respectively; perforations 8 made on the upper part of the end of the pipe to which the nozzles 9 are fixed, an additional suction diffuser 10 is installed on top; diffuser aspiration system 11, embedded in the upper part of the separation chamber; the fender shield 12 with the surface of the saw-like form installed at the end of the separation chamber; the vibration exciter 13 mounted on the outer side of the fender shield; vertical vibroclassifier 14, installed in the lower part of the separation chamber, inside which are partitioned walls 15 with sieves 16, additional suction diffusers 17 installed on the side surface of the vibro-classifier 14 and connected to the pipeline with the aspiration system, discharge pipe 18 of the small product cut into an additional booster pipe 19 of the aeroclassmixer consisting of an additional booster pipe 19 and a classification chamber 20 with exhaust shaft 21 mounted on a torus e secondary aspiration chamber diffuser 22 exhaust system mounted on top of the classifying chamber, modular hoppers 23 fractions of aggregates, installed at the bottom of the classification chamber and provided with a movable partition wall 24 1- shaped conveyors 25 mounted at an unloading nozzles.

Installation of dynamic air-dry enrichment works as follows.

The enriched material through the loading nozzle 2 enters the accelerating pipe 3 and under the action of the velocity head from the high-pressure fan 1 moves into the separation chamber A and strikes against the fender shield 12. The separation

the camera 4 together with the vibroclassifier 14 reciprocates under the action of forces from the vibration exciter 13. The cleaned material from the baffle shield 12 enters the vibroclassifier 14, where it is divided into fractions using partitions 15 and 16 sieves, some of which are conveyed to the consumer by conveyors 25, and another through the discharge outlet of the small product 18 — into the additional accelerating pipe 19. From the additional accelerating pipe 19, the material is transported under the action of a velocity head into the classification chamber 20, where The action of gravitational forces is divided

for three additional fractions, which are fed into the collection bins 23 and along conveyorism 25, are supplied to the consumer. Moving separating stacks 24 prevent different fractions from entering into

Prefab hoppers 23. Two ventilation systems are provided for removing dust particles: natural with exhaust shafts 5 and 21 and enforced by the operation of a dust extraction fan of an aspiration system (not shown). Through diffusers 10, 11, 17 and 22, installed in the places of the largest accumulation of dust particles, dust particles are removed to the aspiration system, Transverse b and 7 partition walls, steps installed on the walls by distillation of the pipe 3 and separation chamber 4. contribute to steady movement of dust particles in the gap between the accelerating tube 3 and the separation chamber 4 and ensure their removal from the installation using exhaust shaft 5. The nozzles 9 mounted on the end of the accelerating tube 3 also favor the removal of dust particles eggs in the diffuser 11 aspiration

system.

Claims (3)

Claim 1. An installation for dynamic air-dry enrichment of materials, comprising a high-pressure fan an accelerating pipe with a loading nozzle, a dividing chamber with a fender shield, on the outside of which there is an exciter, a vertical vibration classifier with stepped partitions and sieves and with unloading of large and small products, an aspiration system with a suction diffuser installed in the dividing chamber in front of the fender shield, characterized in that, in order to increase the efficiency and quality of enrichment, the installation is equipped with an aero-classifier installed at the exit of the patra Bka unloading small product vertical Bibro lass.ifikator. 2. Installation under item 1, characterized in that the azro-classifier is designed as an additional booster pipe with a high-pressure fan, communicated with the outlet of the small product unloading nozzle and the classification chamber installed at the outlet of the additional expansion pipe with successively installed in its lower part in the direction away from the expansion pipe of collecting bins. 3. Installation on PP. 1 and 2, characterized in that the aspiration system is equipped with additional suction diffusers, respectively, installed between partitions and sieves vibroclassifier, in the upper part of the classification chamber of the aeroclassification and at the end section of the accelerating tube of the separation chamber, while the end portion of the accelerating tube of the separating chamber is perforated on the side of the corresponding additional suction diffuser. A. Installation according to claim 1, characterized in that the surface of the baffle plate on the side of the expansion pipe is made saw-like and concave toward the center. 5. Installation by PP. 1 and 2, which differs in that the separation chamber and the classification chamber are equipped with exhaust shafts that are installed in front of the outlet in them of the respective expansion pipes. 6. Installation on PP. Zi 5. is characterized in that it is provided with transverse partitions installed in a staggered order, respectively, on the expansion pipe and the inner walls of the separation chamber between the respective additional suction diffuser and the exhaust shaft. FIG. 2 12 Fig.Z h,  /.Г / Y / 777 77/777/77 % g. four / 24