SU1412809A1 - Arrangement for grinding polymeric materials - Google Patents

Abstract

The invention relates to the technique of grinding polymeric materials and improves the efficiency of the grinding process of polymeric materials of various shapes. A device for grinding polymeric materials contains disk knives 9 mounted on a horizontal shaft 7, the cutting edges of which enter radial annular grooves on the lateral surfaces of disks 8 mounted on another horizontal shaft 6. Distance discs are installed on the circular blades and disks with annular grooves on the shafts 8 sleeves 13, 14. The device contains cleaners 10 for annular grooves of the disks and pullers for crushed material mounted under the shafts between the circular blades and the disks. 2 3. (L-ly, 5 ill. I

Description

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The invention relates to the technique of grinding polymer materials (rubbers, etc.) and can be used in the rubber-rubber, rubber, tire industry to obtain cut material. For grinding rubber-uncured material obtained from industrial waste, as well as discarded vulcanized materials products of rubber, rubber production, for example, s4pog, mandrels and other wastes.

; The purpose of the invention is to increase the efficiency of the grinding process of polymeric materials of various shapes.

FIG. 1 shows the proposed device, a longitudinal horizontal section; n $ fig. 2 shows section A-A in FIG. ; in fig. 3 shows a section BB in FIG. one; in fig. 4 - I in FIG. one; in fig. 5 shows a device fuzz system, section B-B in FIG. 2.: The described device for grinding polymeric materials consists of base 1, racks 2 placed on it, which are fastened together with strings 3. The device is equipped with bearings 4 and 5, in which the shaft 6 and the driven shaft are displaced 7. 6 and 7, cutting 6fioKHs are installed, each of which consists of a bearing disc 8, a disk knife 9, cleaners 10. Cleaners 10 are placed on axis 11. On the outer surface of the support disk 8 c) there is a cylindrical radial ring groove 12.

Between the cutting blocks to obtain particles of a given size are mounted on horizontal shafts and axles. Distance sleeves 13, 14, 15. To ensure the continuous removal of the crushed material, pullers 16 and 17 are installed between each cutting device unit, arranged in the form of comb plates placed on the base 1. bia bearing housings 4 are fitted with stops 18 to provide a predetermined distance between the cutting edge of the disc knife 9 and the inner surface of the annular groove 12 of the bearing disc 8. At infringe shaft 6 is mounted a drive wheel 19, an incoming into engagement with the pinion gear shaft (not shown). At the opposite end of the shaft 6 there are mounted the blisters 20, which enter into engagement with the gear 21 mounted on the driven shaft 7. The driving shaft 6 and the driven shaft 7 rotate one towards the other with a ratio from 1: 1 to 1: 1.5, which allows It is necessary to ensure the supply of the material being cut or the product into the gap between the supporting discs 8 and the disk blades 9, as well as cutting the material with the circular knives in the gap at the moment of its passage between the supporting discs 8 and the circular blades 9.

In order to lubricate the circular knives 9, an electric valve 22 is used, made in the form of a pipe extending along the cutting blocks, and

Each disc knife has a tap 23 with throttle 24 and with a wetting sponge 25 for wetting the cutting edge of each disc knife 9 and each cutting block. A funnel 26 serves to feed the material and the product for grinding. The inner diameter of the groove 12 is smaller than the outer diameter of the support disc 8 to the depth of the cutting blade of the disc knife into the annular gap. Slot width

O is 2-4 mm thicker than the blade thickness of the disk knife 9. The disk knife 9 enters the groove 12 to a depth of 1 -13 mm.

For the purpose of high-quality cutting of material in one pass at the time of the material being tangled into the gap between the circular knives 9

5 and the supporting discs 8, the material at the time of cutting rests on the outer surface of the supporting disk 8, and the disk knife 9 cuts the material through the entire thickness of the material, entering the annular groove 12 to a depth of at least 3 mm, which ensures complete cutting of the material, while the material lies at the time of the cut on two surfaces of the ogur disc located on both sides of the annular groove 12, and the gap between the side surfaces of the cutting edge

5 disk knife 9 and the inner surface of the annular groove 12 of the support disk 8 should be minimal, 1-2 mm per side to ensure free passage of the cutting blade of the disk knife into the collar groove with a minimum clearance for

0 high-quality cutting. The outer surface of the cutting edge of the disk knife 9 should not touch the outer surface of the annular ring to prevent breakage of the cutting edge of the disk knife 9 and should be 2 mm deeper than the maximum plunger of the circular knife in the annular groove. The preset size is adjusted by limiters 18. Presence of crushed material in the annular groove is not allowed at the moment of cutting, as this leads to breakage of the cutting edge of the disk knife, so it should be continuously cleaned, which is what cleaners do 10.

To cut the material to a predetermined width between the blocks, install spacers 13, 14, 15 of the required size.

In order to remove continuously cut material trapped between the installed blocks, the device is equipped with pullers made in the form of comb plates placed on the base below each shaft.

0

The device is wetting the cutting edge of each disk knife with liquid, for which a lubricant is supplied to it, which reduces the temperature of the cutting mode, reducing the power consumed for cutting the material.

The device works as follows.

Rubber, rubber waste or defective finished products are fed into the feed hopper 26. The material under its own weight falls on rotating one towards the other with a given friction supporting discs 8 and disc knives 9. Rotating supporting discs 8 and disc knives 9 retraction material into the gap formed by the cutting blocks, and cut into strips, the dimensions of which are given by the installation of removable spacer sleeves 13, 14.

The supporting discs 8 and the remote sleeves 13 are mounted on the rotating shaft 6, and the circular knives 9 and the remote sleeves 14 are mounted on the rotating shaft 7. Cleaning from the adhering material of the annular gap 12 of the supporting disc 8 is performed by the cleaners 10 mounted on the axis 11 with remote bushings 15.

The shafts 6 and 7 rotate in the supports 4 and 5, which are mounted on the base 1, the uprights 2 and the strings 3. The distance between the supporting discs 8 and the disc blades 9 regulate the stops 18 placed between the sub-supports 4 and 5.

A gear wheel 19 mounted on shaft 6 is rotated through a gearbox gear (not shown), and gear 20 is rotated on shaft 7. Gear material cut by disc knives 9 falls between each pair of blocks and is continuously removed by pullers 16 and 17.

For normal operation of the circular knives 9 and ease of cutting, lubricant is continuously supplied through the manifold 22 to each circular knife 9 through a wetted sponge 25, to which lubricant is supplied through the throttle 24 placed in the manifold 23 of the manifold 22.

The use of the device of the proposed construction makes it possible to crush finally or previously for the subsequent grinding of the product, production wastes having an arbitrary either volumetric or flat shape.

Claims (3)

1. A device for grinding polymeric materials comprising a rotor mounted on a horizontal shaft with working elements having radial grooves in which cutting edges of circular knives mounted on another horizontal shaft are located, characterized in that, in order to increase the efficiency of grinding polymeric materials of various forms, it is provided with a horizontal axis with cleaners on it placed in the radial grooves of the working elements of the rotor on the side opposite to the cutting edges of the disks x knives and mounted on a horizontal axis between the wiper and E on the horizontal shaft between the circular knives and the working elements of the rotor spacer sleeve, wherein the working elements of the rotor are designed as drives and their radial slots are made annular. 2. A device according to claim 1, characterized in that it is provided with pullers mounted under horizontal shafts, each of which is made in the form of a comb plate, the crests of which are located between the disk knives and the disks. 3. The device according to claim 1, characterized in that it is equipped with a lubrication system for each disk knife. 14 eleven 12 fae. five I I I 6 11 16 1 22 25 FIG. five