RU2123423C1 - Sulfuric concrete and related article production line - Google Patents

Abstract

FIELD: manufacture of sulfuric concrete mixtures and articles. SUBSTANCE: line has sand-gravel mixture and mineral powder supplying units, drying and mixing units, tank for receiving ready mixture, binder heater, fuel tank, heat generator, heat-carrier pumping plant, pneumatic system, dust collecting system, and electric equipment. Line is further provided with sulfuric melt temperature stabilizing unit, binder temperature stabilizing unit made in the form of controlled heater disposed in working zone of sulfuric melt doser pump with permissible error during heating not exceeding plus and minus 4 C. Shock wave emitters are positioned at accumulating vessel exit end and adjacent to ready article molding zone, with shock wave pulsed pressure reaching 10 Pa. EFFECT: increased efficiency, simplified production cost by employing standard equipment and reduced power consumption. 1 dwg

Description

 The invention relates to construction equipment and is used to obtain mixtures of polymer and sulfur concrete and products from them.

 A known line for the production of concrete mixtures and products from them, containing warehouses of mineral and binders, crushing and screening units, dosing devices, mixing units, equipment for transporting mixtures, equipment for molding products and structures, steaming chambers, finished products warehouse, control units [one].

 The disadvantage of the line is that it does not have a unit for heating inert materials and a unit for preliminary preparation of a binder, which excludes the possibility of using this line for the production of products from polymer and sulfur concrete.

 Closest to the claimed technical essence and the achieved result, the known technical solution is the line for the production of asphalt concrete mixtures (ABE), containing power units for the sand-gravel mixture and mineral powder, drying and mixing units, a binder heater, a fuel tank and a heat generator, a coolant pumping station , pneumatic system, gas purification system, warehouses of inert materials, binders and finished products, control panel [2].

 The disadvantage of this device, selected as a prototype, is the large temperature error range when heating the binder, which makes it difficult to maintain the temperature range of sulfur, at which the viscosity of the sulfur melt is the smallest.

 The novelty of the technical solution lies in the use of standard equipment of the technological line of the asphalt concrete plant (AVZ), additionally equipped with units having a small error in the heating of the binder, and a shock device for the concrete mixture, which makes it possible to obtain sulfur concretes with high physical and chemical properties.

A new technical result is achieved by the fact that the line for the production of sulfur concrete and products from them is equipped with a binder temperature stabilization system made in the form of an adjustable heater located directly in the zone of the sulfur melt metering pump, the error during heating of which does not exceed ± 4 ^o C, while the exit from the storage tank and the zone of direct molding of the finished products are equipped with a shock wave emitter with a pulse pressure of up to 10 ⁹ Pa.

Equipping the line with a block for stabilizing the temperature of the sulfur melt makes it possible to provide an error during heating of ± 4 ^° C in the area before the melt is fed into the mixing unit. The temperature stabilization unit is placed on the site before the sulfur melt is fed into the mixing unit.

Equipping the line with a shock wave emitter that generates a pulse pressure of up to 10 ⁹ Pa, at a temperature of the mixture not higher than 160 ^o C, breaks in the ring structures of sulfur, the formation of polymer sulfur and a higher compaction of the mixture. The emitter is located directly in the molding zone.

 Comparative analysis with the prototype shows that the inventive device differs from the known one by the presence of a temperature stabilization system, by a shock wave emitter, which promotes the polymerization of sulfur directly in the mixture and its compaction during molding.

 Thus, the claimed line for the production of sulfur concrete and products from them meets the criterion of "novelty."

Comparison of the claimed solution not only with the prototype, but also with other solutions in this technical field made it possible to identify signs distinguishing the claimed technical solution from the prototype, in that part where the effect on the mixture in order to obtain a high compaction of the mixture and polymer sulfur in it and a temperature range of less than 160 ^o C, eliminating the need to use special modifiers for this, which allows us to conclude that the proposed solution meets the criterion of "significant differences".

In FIG. 1 shows a line for the production of sulfur concrete and products from them, containing a warehouse of inert materials and binder 1, a unit 2 for feeding and supplying a sand-gravel mixture and mineral powder, a drying unit 3, an elevator 4, a sorting unit 5 equipped with a screen 6, a sorting unit equipped with compartments 7, a weighing batcher 8, a unit - a mixer 9, a supply unit - a special batcher of mineral powder 10, a metering pump for sulfur melt 11, a vibrator table 12, a mold 13, a shock emitter unit 14 with a pulse pressure of up to September ¹⁰ Pa flask d finished product 15, heat generator 16, sulfur melt aggregate 17, temperature stabilization system 18, mineral powder mill 19, drying unit 20, mineral powder aggregate capacity 21, installation for dry multi-stage dust collection 22 contained in flue gases, chimney 23 , operator control panel 24.

 The device operates as follows. From the warehouse of inert materials 1, mineral materials are supplied to the power unit 2.

 Each feed hopper of the power unit has a dispenser for approximate volumetric dosing of the mixture components - fractioned crushed stone, sand, clay, etc.

 Continuously dosed materials are supplied via a conveyor belt (conveyor) to the drying unit 3, where the materials are dried and heated to operating temperature. The heating temperature is set taking into account subsequent losses and is constantly monitored by automatic devices. With a hot elevator 4, the components of the mixture are fed to a sorting unit 5, for more thorough fractionation into compartments of the hot bins 7 and subsequent weight dosing from the hopper of the batcher 8, a portion of the dosed material is fed into the mixer 9, and from the pump-dosing device 11, sulfur melt is fed into the mixer 9 . From a special dispenser 10, mineral powder, or special additives, is fed into the mixing unit 9.

 To reduce heat loss and dusting, the weighing hopper and mixers are covered with casings. The finished portion of the mixture from the mixer 9 goes directly to the molding zone on the vibrator table 12 in the mold 13, where the mixture is densified and polymerized using the block of the emitter of shock waves 14. Then the finished product goes to warehouse 15.

 The dispenser of mineral powder 10 is loaded by pneumatic conveying from a supply tank 21, which, as necessary, is filled from a mill 19, which is loaded from a warehouse of inert materials. Mineral flour from the tank 19 passes through an additional drying unit 20 for flameless drying and heating of the mineral powder.

The sulfur melt system is powered from the heated tank 16, which has a pump-switching device, the coolant from the tank enters the melt system 17, where the temperature of the sulfur melt reaches the operating temperature. At the outlet of the system, a sulfur temperature stabilization unit 18 is installed in the form of an adjustable heater, the error upon heating of which does not exceed ± 4 ^o C, which ensures its supply to the metering pump 11 zone in a strictly specified temperature range and subsequent melt flow into the mixer. The exhaust gases from the drying drum 2 enter the dust collection system. Installation 22 of dry multi-stage dust collection involves the disposal of dust, which then enters the mineral powder batcher 10, from where it can be fed into the mixer 9. The gases purified in the multicyclones by a fume exhaust system are removed through a chimney.

Sources of information
1. Drozdov N.U., Zhuravlev M.I. Mechanical equipment of precast factories. Textbook for high schools.-M .: Stroyizdat, 1975, 309 p.

 2. Poltavtsev S.I., Yudin A.I. Reconstruction and technical re-equipment of DSK. -Kiev: Budivelnik, 1989, 168 p.

 3. Serov K. P., Komchatnov L. P. Installation for the preparation of asphalt mixtures.-M.: Engineering, 1971, 19 p.

Claims (1)

A line for the production of sulfur concrete and products thereof, containing aggregates for supplying sand and gravel and mineral powder, drying and mixing units, a hopper for the finished mixture, a binder heater, a fuel tank and a heat generator, a coolant pump station, a pneumatic system, a dust collection system, electrical equipment, warehouses inert materials, binder and finished products, control panel, characterized in that the line is equipped with a binder temperature stabilization system, made in the form of an adjustable heater, p memory location directly in the melt pump dispenser sulfur error when heated does not exceed ± 4 ^o C, and the outlet from the collecting tank and a zone of direct molding of finished articles emitter equipped with a pressure shock wave pulse to 10 ⁹ Pa.