SU137049A1 - Feeder for dosing bulk materials - Google Patents

Description

Disc feeders are known for dispensing bulk materials with a rotating hopper, a knife throwing material, and a sealed enclosure using a water seal.

Compared with the known dish-fed feeder, it provides reliable operation not only with dry, but also with moist bulk materials, for example, when dispensing sulfide ores and other materials.

For this purpose, the feeder plate under the hopper is additionally equipped with a knife, which is adjusted by a screw to penetrate the desired city in the bunker radially. Thus, the moistened packed material on the plate before going beyond the rotating bunker will be under the influence of the knife all the time, which destroys this material.

In addition, to prevent the escape of harmful gases from the bottom of the tray, an additional air trap is mounted on it. In order to improve the control over the delivery of material from the feeder, its estrus is supplied with a tray pumped on elastic loops and resting its bottom on a strain gauge interconnected with the indicator.

FIG. 1 shows a plate feeder in section and plan; in fig. 2 shows an additional knife assembly, a section along A-A in FIG. one; on fit. 3- - chute unit with a tray in the section and plan.

The disc feeder consists of a rotating hanging hopper /, a drive with a gear 2 and a pair of bevel gears 3 with a support bearing.

On a large conical bristle, a shell 4 is rigidly fixed, on top of which is placed the plate 5 rotating from the drive. The bottom of the bunker / and the bottom of the plate 5 are enclosed in the casing 6 with the lid 7 and the leakage S. ten.

№ 137049

For unloading and dosing of the material, the feeder is equipped with a knife 11, which scoops the material flowing out of the hopper. For greater or lesser grip of the material, the knife // is pivotally attached to the wall of the chute and deflects under the influence of a thread with a thread and a handwheel 12. To counteract the hanging of the moistened material in the bunker, the described design of the feeder is additionally equipped with a flat or cylindrical knife 13, which is radially to the axis of the bunker and located in front of the scavenging knife 11. This knife is placed in the guide clamp 14 (see Fig. 2) and equipped with a threaded rod and a handwheel 15 for advancement.

Due to the fact that the feeder is closed by the casing and sealed, any visual observation of the flow of the material stream coming from the plate into the chute cannot be carried out.

For this, in the heat pipe 8 (Fig. 3), on the elastic strips in the form of a loop 16 is suspended a movable tray 17, resting its bottom on a strain gauge 18, which is fixed in the wall of the estrus and senses the forces that the bottom material of the tray produces. These forces are transformed into a corresponding impulse, which then goes further into the system of instrumentation, where it is recorded as a quantity characterizing the intensity of the flow of material spilled from the feeder.

According to the conditions of operation of the feeder and to prevent metal corrosion in it, hydraulic locks are poured over water, on top of which a thick layer of oil is poured to prevent dissolving sulfuric anhydride in water, and air with a pressure greater than the pressure in the furnace chamber is supplied to the inner cavity of the feeder.

Subject invention

1. A feeder for dispensing bulk materials, fitted with a bunker with a water seal on the sidewall and interconnected frictionally through the material with a rotating plate, over-the plane of which is fixed inside the casing of the feeder, dropping the knife, characterized in that, in order to ensure reliable and adjustable dispensing of materials, it is equipped with an additional adjustable radial knife fixed in the casing ahead of the main one and covering no more than 20% of the height of the working slot of the feeder with its section.

2. Feeder for dosing according to claims. 1, characterized in that, for the purpose of Ger. Metiz | Zii of the feeder plate, the bottom of the feeder housing is provided with an annular (Y-shaped pocket in which an annular apron is sunk, attached to the lower surface of the disk of the dish.

3. Feeder for dosing according to claims. 1 and 2, characterized in that, in order to improve the control over the operation of the feeder, its estrus is equipped with a tray swiveling at its hinge, resting on a strain gauge which is fixed in the wall of the estrus and interconnected with the indicator.

FIG. I