SU1645150A1 - Grinding device - Google Patents

Description

one

(21) 4488006/15

(22) 09/28/88

(46) 04.30.91.Byul. №16

(71) Sverdlovsk Scientific and Production Logging Association

(72) A.GG.Panychev, V.V.Smerdov, M.V.Smerdov and G.P.Mishchyhin

(53) 674.926.3 (088.8)

(56) French Application No. 2542632, cl. B 05 C 18/40, 1984.

The patent of Sweden No. 436744, cl. 827 L 11/00, 1985.

(54) DEVICE FOR CRUSHING MATERIALS

(57) The invention relates to the wood pulp and paper and wood chemical industry, in particular to equipment for the production of wood chips. The purpose of the invention is to increase the reliability of work. The device contains at least two rotors rotating towards each other, each of which contains a shaft 2 with toothed disks 3, separated by spacer sleeves 4. The toothed disks 3 are equipped with wedging protrusions 5 made on the disks 3 directly behind the teeth 6 and above them. There are a number of mounting holes 7 on the disks for each proppant 5, and the latter are mounted along the generators of the disks. The gear discs 3 cut into the material to be milled, and the protrusions 5 create a propping force. 3 il.

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The invention relates to the timber, pulp and paper and chemical industries, in particular to equipment for the production of chips.

The purpose of the invention is to increase the reliability of work.

FIG. 1 shows the device, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. 2

A device for grinding materials contains at least two rotating one another towards rotors 1, each of which contains a shaft 2 with toothed discs 3 separated by spacer sleeves 4. The toothed discs 3 are equipped with wedging protrusions 5 made on the discs 3 directly behind the teeth 6 and above them. The disks 3 are provided with a series of mounting holes 7 for each proppant 5, and the latter are mounted along the generators of the disks 3 and fixed in the said holes 7 with bolts 8.

The proposed device for grinding materials works as follows.

The material to be ground (wood) is fed to the toothed disks. 3, rotating to meet one another. The tooth 6 seizes the wood and starts cutting into it. As plunging into wood, the crushing force of material Pd increases. The protrusion 5, reaching the wood, with its inclined surface creates a wedging force F, the vertical component of which FB pushes the main part of the wood upward, and the notched part is held by the tooth 6 and cleaved it down. The length of the resulting chips will be determined by the size a, equal to the distance from the top of the tooth 6 to the top of the wedging protrusion 5. If it is necessary to increase or decrease the length of the wood chips, the wedging protrusion 5 is removed and moved along the forming toothed disk 3 (respectively increasing or decreasing the size a) . In the absence of wedging protrusions 5, the crushing force RD can

so increase that the torque of the motors is not enough to rotate the rotors 1 and they will stop. This will stop the wood shredding process, make it necessary to stop the engines and turn the rotors 1 into reverse rotation, which will reduce the performance of the device. In addition, in the absence of wedging protrusions 5, chips are obtained, having a large size variation in length, which is an undesirable phenomenon, and the required chip size cannot be adjusted.

Claims (1)

Invention Formula A device for grinding materials, including at least two rotors, each of which contains a shaft with toothed disks with spacer sleeves, characterized by that, in order to increase reliability in operation, the gear disks are made with mounting holes and are provided with wedging protrusions, the latter being mounted behind the teeth and above them, and the mounting holes are located along the rear surfaces of the cutting elements of each toothed disk, while the wedging protrusions are mounted on the forming disks. figs