SU20434A1 - Mill for crushing or grinding - Google Patents

Description

The present invention relates to a crushing or grinding mill apparatus provided with hammers pivotally connected to discs and moving armor covered with grooves, with rearranged armor drawn by bolts to the mill casing provided with squeezing bolts that make it possible changing the distance between the hammers / and armor of the equipment and, without stopping the machine. This mill is intended for crushing and grinding of solid and soft minerals and similar materials.

In FIG. 1 shows a cross-section of a meldice; FIG. 2nd longitudinal section; FIG. 3 and 3-top mobile armor; FIG. 4, 4, 4-ball joint with detachable drummers.

Two round disks 2 (Fig. 2) mounted on the horizontal shaft 1 of the mill are fixed with cutting keys 30. These disks have several holes spaced at an equal distance from each other (their number varies from three to fifteen, whereby, a smaller number of hammers is required for crushing, and a larger one for grinding. These holes in the discs 2 are used to install special-shaped articulated hammers 3 (Fig. 4). Detachable impactors 4 are attached to the hinge pins, which, depending on the nature of the material being milled, may have different shape of ledges. So,

for grain grinding and crushing, they have small conic ledges of the fir-tree shape, for crushing soft centners

Rock, minerals, straight and gooseneck ledges, for more solid rocks, impactors are continuous, without ledges. Small Christmas tree ledges are also used for materials that are hard to break, and vegetation products, for example, for sawdust, bark and in general wood, as well as for chemical materials-ebonite, etc. Hinged, hammers with impactors freely rotate in the holes x disks and during the rotation take the form of a round fan. On the shaft, next to the discs of articulated hammers, disc-shaped fuses 23 are installed against dust and, which, due to the rotation on the shaft, do not allow dust from the crusher body to the outside. Further along the shaft, on the lower housing of the mill,. ball bearing housings are located. At the long end of the shaft, the working 25 and idle pulleys are mounted. 26. In the upper housing of the Melia, a swiveling armored 5 is placed in the upper housing, which is fixed neither to the upper wall of the mill housing with four bolts 7 and two bolts 8 to the end of the housing. This armor can be moved to the center of the crusher, for which in the end casing there are squeezing bolts 9, and in the upper wall of the lid the holes for the bolts 7 are made elongated. First, the armor is firmly attached to the end wall of the body; when hammers and armor are triggered, it moves the bolts 9 until it comes into contact with the rotating hammers or for the distance that is set by crushing or grinding. This movement of armor is also allowed on the go, when it can be installed at a distance from the hinge hammers. The end armor 11 of the lower hull together with the arc frame 15 for the grid bars and the grid can also move, as well as the upper armor; together with the frame 15, this armor is fixed on the hinge rod 12, which passes through the opening of the armor And and the frame 15, as well as through the lower body 10 of the mill, in which there are longitudinal holes.

 The stem is threaded at the ends for the nuts with which it is fixed on both sides of the housing. The upper part of the Top armor is bolted 13 to the body 10 of the mill. The movement proceeds as follows: the nuts of the stem 12 are loosened, as well as the bolt 13, on the clamping bolts 14 they press on the end armor and push it along with the frame 15 to the rotating hinge hammers to the right limit, after which all the nuts are fixed. The opposite end of the frame 15 is suspended on two hinge bolts 18 to the body

, mills, thanks to which you can raise and lower the frame to the desired limit. Armor 20 and 21 are also bolted to the hull and have squeezing bolts for moving them to the hammers. A loading device 27 is placed on the loading opening of the upper housing, which inside the housing has a wing drum 28, which rotates around the shaft 29 under the weight of the material loaded into the device. The loading device is open during the rotation of the drum

B.C.

  about

it always remains closed, and the material entering the mill body is not ejected by the rotating hammers back into the loading opening, which presents some convenience in terms of safety for the mill personnel. When grain products are ground, the wing drum is removed from the loading device 27 and is inserted in its place; an electromagnetic apparatus, the structure of which is not indicated in the drawing.

The crushing and grinding process is as follows. The material to be crushed or milled is loaded into the loading device 27. It hits rotary hammers. When struck with the first hammer, the material is thrown off by the IM on the first step of the upper transfer armor 5; the subsequent hammers strike, grinding, the product next to the top steps of the upper and lower armor, as well as the grate 32, inserted into the arc frame 15; the finished product is run through the mesh, and larger particles are crushed into two end armor x 20 and 21. Thanks to the movable armor, the crusher can work until the final wear of hammer hammers and armor, which have the best performance, since all the time on the move you can armor to the rotating hammers closely, not to disassemble and not to stop the mill itself, while in other systems of the mills P | It is necessary to disassemble the machine in order to bring the armor closer to the rotating hammers with the help of special gaskets.

ITEMP. ,one. A mill for crushing or grinding with hammers pivotally connected to the discs and a swiveling brute covered with rifles, characterized in that the adjustable armor 5, 11, 20 and 21 are pulled to the casing with bolts 7, 8 and have squeezing bolts 9, in order to approach armor to hammers outside the car; don't stop the mill.

2 / At the mill according to claim 1, use hammers 3 with detachable percussion bars 4 fixed with bolts, smooth or with ledges in the form of straight or Christmas tree flutes,.,