SU1712162A1 - Apparatus for preparing concrete mix - Google Patents

Abstract

INSTALLATION FOR PREPARATION OF CONCRETE. MIXTURE

This invention relates to concrete mixers and will increase productivity. The concrete preparation plant contains feed bins 1, 7 for aggregates located in at least two parallel rows with dispensers, cement bin 13 with dispenser, dispenser, mixer, water supply devices, additives, conveyor 5 located under the dispensers. for loading aggregate silos. It is equipped with a zigzag conveyor belt with overload device 4. The conveyor 12 is equipped with a flow divider 18 mounted along its axis at the cement metering device. 2, hp f-ly, 5 il.sls

Description

The invention relates to the construction and can be used for the preparation of concrete and cement sand mixture mortars at industrial, civil, energy and other types of construction.

The purpose of the invention is to increase productivity.

1 shows a plant for preparing a concrete mix, a general view; figure 2 is the same, the view in the plan; in FIG. 3, node I in FIG. 1, in section; figure 4 is the same, view in plan; figure 5 is a cross section aa on.

The concrete mix preparation plant contains feed bins 1 for aggregates of concrete of various fractions located in two p. yes, a feeding device made in the form of a two-piece zigzag inclined conveyor consisting of the lower section 2

and an upper section 3 at an angle thereto. The upper and lower sections 3 2 communicate with each other through the overload device 4. The upper section 3 of the feeding device communicates with a distribution conveyor 5 located above each of the rows of bins 1 with a filler with a movable plow-dumping device 6. The consumable bins 7 are located above the part of the lower section 2 of the feeding device located outside the supply bins 1. Above the consumable aggregate bins 7 there is a distribution conveyor 8 with a mobile plow-dumping device 6. The VerHn section 3 of the feeding device is fixed between the bunkers - 1 with the possibility of interaction with each of the distribution conveyors 5 and the conveyor 8 by means of the mechanics 9

distributing the aggregate flow comprising a cross conveyor located between the distribution conveyors and an overloading device.

Consumable aggregate hoppers 1 have a tapered part to which continuous dispensers 10 are attached, which can work as tape feeders. Above the output leakage for repair work installed gate valves (not shown in the drawing). Under the continuous dispensers 10 or belt feeders, sub-metering conveyors 11 are placed, which can operate as weighing conveyors. Podzatornye conveyors 11 are in communication with the collecting conveyors 12 installed along their axis, placed under the hoppers 13 with cement. Cement hoppers 13 are arranged in a row perpendicular to consumable hoppers 1 in an amount of 3 pieces, two of which are intended for one brand of cement and have one outlet flow each. An average bunker 13 containing another brand of cement is made with two chutes and two screw feeders 14 to allow unloading into both mixers 15, 16. The preparation of the solutions is carried out in a forced-action cyclic mixer 15, the preparation of the concrete mix is carried out in a mixer-mixer 16 continuous cyclic action, able to work in two modes. On the collecting conveyor 12 under the chute dispensers 17 of the hopper 13 with cement is located the splitter 18 stream aggregates concrete mix. The concrete aggregate flow divider 18 consists of baffle plates 19 fixed on the sides of the collecting conveyor 12 with seals 20 for pressing against the lateral sides of the conveyor belt 21 12. Between the baffle plates 19 and with a gap there is a wedge-shaped element 22 installed with a gap with respect to the conveyor belt 21. The wedge-shaped element 22 is made of two plates 23 spaced from each other, mounted on the conveyor frame and interconnected by plates in the front part on the side of the sub-metering conveyor 11 with the formation of a dihedral angle less than 80.

The dispenser spout 17 of the cement hopper is located between the plates 23, the lower ends of which are located below the end of the chute.

To prevent cement dusting during loading onto the collecting conveyor belt, the device is equipped with an apron 24 attached to the cement hopper dispensers 17 and to the plates 23 of the wedge-shaped element 22.

The loading of a two-section zigzag inclined conveyor of the feeding device is carried out through the receiving hopper 25.

In the emergency case of the passage of the filler through all the plates of the plow-dumping devices 6 of the distribution conveyor 8, the material (aggregate) along the vertical trunk 26 is dumped into the receiving bin 25. The concrete mix is discharged from the concrete mixers to the conveyor 27 and can be carried out by transporting directly to the place of laying on the conveyor or pipeline transport or to the buffer tank for dispensing to the betrinovoz transport.

The installation also includes two control panels for preparing and dispensing the concrete mix and receiving the loading of the bins, as well as separating chemical additives. steam and water systems (not shown). The entire installation is housed in a housing made of blocks of increased readiness for quick installation and disassembly

Concrete Plant

mixture works as follows.

The material (aggregate) from the dump truck is discharged into the receiving bin 25 and then through the inclined sections 2, 3 of the feeding device enters the bunkering compartment, where it is loaded through the aggregate flow distribution mechanism 9 to one of the horizontal pacfipe separation conveyors 5 located along each row of main consumables

bins, or on the distribution conveyor 8 over additional feed bins 7. Next, using a mobile plow-dumper 6, the material enters one of the feed bins.

Prior to accepting the machine with the material, the acceptance officer determines the bunker to which the loading is to be performed, after which the inclined conveyor of the feeding device is set to

feed material in the desired number of bunkers) c. and the material is dumped against the desired bin.

Cement is loaded into hoppers 13 by cement trucks.

The preparation of the solutions is carried out in a forced-action mixer 15 cyclically. The line for the preparation of a concrete mix is terminated in a continuous batch mixer.

16, capable of operating in two modes. The types of mixers determine the types of dispensers.

The dosing of aggregates in a cyclic mode is performed by a group dosing device made in the form of a tank, the bottom of which is a metering belt conveyor 11, which in this case is a weighing conveyor, the material is fed from the aggregate bins 1 to the weighing dodger conveyor 11 by belt feeders 10. After the dose has been weighed, the sub dozant belt conveyor 11 supplies the aggregate to the concrete mixer 15 through the inclined collecting conveyor 12. Cement is fed from the chute of the dispenser 17 bun: ke ra with cement inside the divided into two parts by means of a splitter 18 aggregate flow. After exiting the thread splitter 18, the filler walls, which are in a vertical position, occupy a position at an angle of repose and cover a layer of cement laid between them, forming a protective coating. preventing its spraying when moving on the collecting conveyor 12. Water dispensers and chemical additives are located above concrete mixers 15, 16.

Dosing on a continuous-cycle line for preparing a concrete mix is carried out using, in addition to the described continuous dispensers, duplicate cyclic dispensers. The continuous dispensers 10 for aggregates are located above the sub-docking conveyor 11. which in this case is only a transport for aggregates weighed by continuous dispensers. In cyclic mode, continuous dispensers act as feeders. From the concrete mixers 15, 16, the concrete mixture is fed to conveyors 27 for dispensing the concrete mixture, from which the concrete mixture can be unloaded onto vehicles.

Claims (3)

1. A concrete mix preparation plant containing aggregate feed bins located in at least two parallel rows with dispensers, cement bin with dispenser, dispenser, mixer, water supply devices, additives, loading conveyor located under the batchers aggregate bunkers, in contrast to the fact that, in order to increase productivity, it is equipped with a zigzag conveyor belt placed between the aggregate silos with a device for reloading, and nveyer disposed under dosing flow-divider, mounted on its axis in the dispenser for cement. 2. The installation according to claim 1, in connection with the fact that the flow divider is made in the form of a wedge-shaped element with baffle plates connected by means of seals to the conveyor belt. 3. Installation according to claim 2, characterized in that the wedge-shaped element is made in the form of parallel plates connected by means of additional plates forming between them a dihedral angle not exceeding 90 °, while the guiding fixture of the cement dispenser is located in the divider cavity. J 6 5