Feed grinder. Drawing, description

TOOLS AND MECHANISMS FOR AGRICULTURE
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Feed grinder. Drawing, description

Tools and mechanisms for agriculture

Directory / Tools and mechanisms for agriculture

The mechanism is designed for grinding meadow grasses, nettles, burdocks, reeds, corn stalks and cobs, various root crops. The degree of crushing of green mass is regulated by the time it is in the bunker. But more on that below; First, what is a grinder.

It consists of a tripod, an electric motor with a power of 500 W at 220 V, a hopper with a lid and a cutting device of two knives - a worker and a "sweeper".

The tripod is welded from steel rods and plugged water pipes. The bunker is made from an O300 can and is 100 mm high. In the center of the bottom of the can, a hole was made for the motor shaft, and in the wall (with a bottom grip) there was a 70X70 mm window with a shutter for the exit of finished products.

In addition, a corrugated steel chipper strip 40 wide and 1 mm thick is riveted to the wall from the inside, designed to throw large particles flying away from the center onto the knives.

Feed chopper
Rice. Fig. 1. General view of the grinder (lid removed): 1 - hopper, 2 - damper in the open position, 3 - exit window, 4 - chipper belt, 5 - cutting unit, 6 - start button, 7 - electric motor, 8 - tripod

The bunker is attached with three M6 studs to the body of the electric motor mounted on a tripod, and is covered with a lid, in which an inlet 50x50 mm in size is made for supplying raw materials.

Now about knives. They are made of a two-handed saw blade and mounted on a bushing fixed to the motor shaft with an M6 screw. The lower one, the "sweeper", is curved like a propeller and is intended for throwing uncut stems onto a working knife located twenty millimeters higher, as well as for sweeping the finished green mass into the output of the bunker.

Unlike a blunt "sweeper", a working knife has sharply sharpened cutting edges. The ends of the knife are slightly bent down - so it cuts better.

Rice. 2. Chopper device (click to enlarge): 1 - hopper, 2 - chipper belt, 3 - cover, 4 - "sweeper", 5 - working knife, 6 - inlet, 7 - bandage for fastening knives, 8 - cup-shaped washer , 9 - sleeve, 10 - exit window, 11 - damper guard, 12 - damper, 13 - bunker mount, 14 - electric motor, 15 - motor shaft, 16 - washer.

The grinder is used as follows. The engine is started, and the grass intended for cutting is sent to the inlet in the lid (the damper is closed). The rotating blades pick up the grass and chop it up. The degree of grinding, as mentioned above, depends on the time spent in the bunker: the longer, the finer. On average, 5-6 s is enough for the entire operation. After that, the damper is opened, and the green mass begins to pour from the exit window in a continuous stream. Under normal operating conditions, you can get up to 100 kg of products per hour.

Author: I.Shamotin

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