SU1502357A1 - Feeder of fibrous material - Google Patents

Abstract

The invention relates to devices for dispensing fibrous materials into a concrete mixer and allows to improve the quality of the fiber-reinforced concrete mixture due to the uniformity of supply. The fiber material feeder includes a housing 1 with loading and unloading openings, feeding rotors 4, 5, loosening drum 16 with pegs 18. It is equipped with a comb 9, a gear-lever mechanism and a device for changing the speed of rotation of the drum 16. The rotor shaft 4 is spring-loaded. The gear-lever mechanism is kinematically connected to the comb 9, the rotor shaft 4 and the device for changing the rotational speed of the drum 16. The gear-lever mechanism can be made in the form of a lever 11 fixed to the body, one end of which is pivotally connected to the shaft of the rotor 4, and the other through gear rack 13 - with gear 14. 1 z.p. f-ly, 1 ill.

Description

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The invention relates to the field of construction, in particular to devices for metering fibrous materials, and can be used, for example, to meter and supply synthetic fiber in the manufacture of various types of fiber-reinforced concrete.

The purpose of the invention is to improve the quality of the fiber-reinforced concrete mixture due to the uniformity of supply.

The drawing shows the feeder, a general view.

The fiber material feeder contains a cylindrical housing 1c with an inlet neck 2 and an outlet neck 3. Inside the inlet neck 2 there are two parallel feed rotors 4 and 5, filled in the form of metal combs attached to the shafts. The rotor shaft is made with the possibility of horizontal movement along the guides 6, which are fixed on the walls of the neck 2. With the help of springs 7, the rotor 4 is spring-loaded towards the rotor 5.

Above the rotor 4 in the guide 8 there is a movable comb 9 directed by the teeth in the direction of the material being metered. The comb 9 and the rotor shaft 4 can be connected to each other using the cable 10 and the lever on the neck 2 using the holder 12. The dimensions of the comb 9, the pipe 10, the lever 11 and the holder 12 are determined by the CIM that when the rotor is 4 in the extreme position 5 closest to the rotor, the ends of the teeth of the comb 9 coincide with the edge of the guide.

On the side opposite to the teeth, the comb 9 is secured with a rack 13, which engages with a gear 14 mounted on the axis of the potentiometer 15, which is an assembly of the device for changing the speed of rotation of the loosening drum 16.

Under the power supply 1va: pits 4 and 5 there is a loosening drum 16 fixed on the shaft 17 so that it can rotate. Spikes 18 are radially mounted on the surface of the drum 16. When the drum 16 rotates, the spikes 18 go into the radial grooves of the combs 9 of the feeding rotors 4 and 5.

The feeder works as follows.

The dosing material (mass of synthetic fibers) is loaded into the upper neck 2, from where it is captured by the slowly rotating rotating rotors 4 and 5 and fed to the loosening drum 16, which rotates at a higher angular velocity. The pegs 18 of the drum 16, the passage through the radial grooves of the combs of the feeding rotors 4 and 5, pull out of the mass of material small strands of fibers and drop them into the lower part of the housing 1, from where the fibers enter the neck 3.

If the feeding rotors 4 and 5 start to push more synthetic fiber into the gap between them, then it depresses the rotor 4 from its right extreme position, compressing the spring 7 and pushing the load 10, and through it the lower end of the lever 11. Turning the lever 11 around the holder 12 causes the movable comb 9 to move to the right and to insert its teeth into the material located above the feeding rotors 4 and 5. At the same time, the gear bar 13, moving to the right, turns the potentiometer axis 15 at a certain angle, which causes an increase in speed loosening the loosening drum 16.

As a result, the movable comb 9 will impede the flow of material between the feeding rotors 4 and 5, and the pegs 18 of the digging drum 16 will more often pull fiber bundles out of the dosed material, and the greater the amount of material between the feeding rotors 4 and 5, the more significant the comb 9 decreases the amount The material supplied to the feed rotors 4 and 5 and the more often the splittings of the loosening drum 16 pull fiber bundles from it.

The decrease in the amount of material flowing into the gap between the feeding rotors 4 and 5 causes the springs 7 to press the rotor 4 to the rotor 5, the comb 9 is sunk into the guide 8, and the loosening drum 16 reduces the speed of its rotation.

Claims (2)

1. Feeder fibrous material, comprising a housing with a boot and discharge openings, feeding rotors, loosening drum with pegs located on its outer surface, characterized in that, in order to improve the quality of the fiber-reinforced concrete mixture due to uniform feeding, it is equipped with a comb located above the feeding rotors, a gear-lever mechanism and a device for changing rotational speeds of the drum, and the shaft of one of the rotors is spring-loaded, and the gear-lever mechanism of the kinematic It is connected with a comb, a shaft of a spring-loaded rotor and a device for changing the speed of rotation of the drum. 2. Pop-up feeder 1, characterized in that the gear-lever mechanism is made in the form of a lever fixed on the body, one end of which is pivotally connected to a spring-loaded shaft, and the other through a gear rack with a gear for changing the speed of rotation of the drum.