SU65292A1 - Device for dosing bulk solids and liquids - Google Patents

Description

Automatic dosing devices are already known, the measuring tanks of which are freely suspended by swinging arms and overturning when loaded under the action of the force of gravity of metered materials. Devices of this kind are rather complex in design and their exploitation is associated with considerable difficulties.

The proposed device, equipped with measuring tanks mounted on pivoting levers, is simple in design and has the peculiarity that the measuring tanks are mounted at the ends of the weight arm, held in one extreme position by a latch released by the float at the end of the tank filling with liquid, and in the other extreme position the latch released by the moving bucket under the action of the weight of the fluid at the end of its entry into it from the tank.

In FIG. 1 is a front view of an exemplary embodiment of the device; FIG. 2 is a top view of the device of FIG. 1, fig. 3 is a side view of the device of FIG. 1, fig. 4 is a cross-sectional view of a silo for the bulk body of the device;

FIG. 1, fig. 5 is a detail of the device of FIG. , figs. 6 is a cross-section of the measuring tank for the liquid of the device according to FIG. I.

The device is made in the form of two levers / -2, having the form of frames with the required ratio of shoulders, independently rotating on the prism support 3. On the same supports, measuring tanks 4-5 for liquid are mounted on the right arms of the left arms 1-2 on the left arms - ivtepHbie tanks 6-7 for bulk bodies.

For alternately filling the measuring tanks 6-7 with a bulk body, a bunker 5 is provided, equipped with a rotary distributor gate 9 that allows material to be fed into the tray 10 and into the measuring tank b, then into the tray // and into the measuring tank 7 (Fig. 4). The gateway 9 is rigidly fixed on the axis 12, provided with a block 13, for a flexible drive connection 14, covering the block 15 of the distribution roller 16.

To alternately fill the measuring tanks 4-5 with liquid from the pressure pipe / 7 whose branches are directed to the barrels 4-5, valves 18 are used (Fig. 6),

installed in the ends of the branch pipes / 7 and controlled by the projections 19 on the walls inside each of the tanks 4 or 5.

Inside each of the canisters 4-5 there is a float 20 with a vertical stem 21, a directed protrusion 22 of the tank wall and passed through the holes of the angular lever 23, pivoting on the fixed axis 24 and pivotally connected to the latch 25, cooperating with the fixed stop 26 of the steaming 27 (Fig. . sixteen).

When the tank 4 or 5 is filled with liquid to the required level, the float 20 with its lid exerts pressure on the long arm of the corner lever 23, releasing the latch 25 from engaging with the fixed stop 26, as a result of which the tank 4 or 5 is lowered down, mounted on the prismenye supports of the levers 1 or 2 and the side protrusion 28 presses the spring-loaded latch 29 of the fixed support 26. The bulk body entering one of the measuring tanks 6-7 fills it to the required level and causes it to descend, overcoming the weight of the s 4-5. In this case, lowering the tank 6 or 7 causes rotation through intermediate links 30 near the axis 32 of the lever 31, bringing it to the stems of the drain valves 33-34 of the bottom of the measuring tank for the liquid.

The fluid, coming out through the valves 33-34, gets into the bucket 35, mounted on the rocker arm 37 pivoting about axis 36, with a counterweight 38, connected by lever system 39 with latch 29, releasing the latter and allowing the tank to be lifted for the next filling. To empty the tanks 6 or 7 by means of their inclination, a tank end 40, equipped with a roller 41 (Fig. 5), cooperating with a shaped guide 42, is designed on the prism support.

For turning the distribution roller 16 into one or the other

the side arms 1-2 are provided with corresponding side stoppers 43-44 coupled to the cam 45 of the roller 16. Discharge funnels for metered doses of a bulk body and liquid are not shown in the drawing.

The device operates automatically and is expressed in the fact that when the tank for the liquid of one of the levers / -2 is raised, the tank is replenished with liquid, and a loose body leaks out of the lowered and overturned tank of the opposite shoulder. At the same time, filling the reservoir with a loose body of a lift of another lever with a tank already filled with fluid causes a gradual lowering of the reservoir with a loose body and release of fluid through the valves in the bottom of the reservoir for liquid, followed by a rapid lowering and emptying of the reservoir from the bulk body. The return to the raised position of the tank for a loose body is made by the weight of the liquid entering the corresponding tank of the raised lever arm.

Subject invention

Claims (2)

1. Instrument for dosing bulk solids and liquids, za; immersed in itself measuring tanks, mounted on pivoting levers and acting from the weight of metered materials, with the fact that measuring tanks are mounted on the ends of the weight beam held in one extreme position by the latch released by the float at the end of the tank filling with liquid, and in the other extreme position by the latch released by the moving bucket under the weight of the liquid at the end of the last of the tank entering it. 2. The form of the apparatus according to claim 1, characterized in that the latch 25, cooperating with the fixed stop 26, is connected by means of a lever system with a vertical brush of the float 20 inside the fluid reservoir. e