FI66030C - ANGLE CONNECTION FOR SLEEVE WITH CROSS FLOWER WITH SATELLITE JORDER - Google Patents

Description

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Patent and Registration Office .... ... . . ..,., _ * (44) Date of issue and date of issue -

Patent- ocn registerstyrelsen Amttkan utlagd och utl.tkrift · * published 30.04.84 (32) (33) (31) Pn «» * «r vtuoikeu» —Bvjlrd prlorttet 26.05.76

Sweden-Sweden (SE) 7606019 ~ 3 Proven-Styrkt (71) (72) Roland Palm, Mobodarna 346, 82600 Söderhamn,

Sven Palm, Krongatan 16, 82600 Söderhamn, Sweden-Sverige (SE) (74) Oy Kolster Ab (54) Device for comminuting stumps into crumb chips, whereby the soil and stones are separated at the same time - Anordning för sönderdelning av stubbar till krossflis med veltidig jord- och stenavski the invention relates to a device for crushing stumps and separating soil and stones therefrom before final chopping into wood chips.

Due to the growing shortage of wood fiber raw material in forests compared to the growing demand in the world, forest countries have been trying for a few years to harvest more wood than has been the case in the past. In this case, special attention has been paid to the strains, primarily because Nam 'roots, including the roots, form a substantial, good mass-quality wood fiber supplement. Several devices have been introduced in different countries to raise stocks. During or after raising the stump, the first chopping of the stump is performed so that it and its roots become easier to handle.

o 6: 3030 To this ant. i the chopped stumps have been transported by off-road vehicle to a central roadside, from where they have been transported by truck to a pulp mill, where the stumps have been treated differently to remove soil and stones before they are turned into chips. however, two very significant drawbacks.

Another disadvantage is that the carrier parts with their protruding roots prevent a percentage of solid mass which is sufficiently profitable in view of the load volume of the transport vehicle. Another disadvantage is that large amounts of zero and stone are transferred in the irregularities and branches of the carriers. There are also stones left inside as the tree grows. Pulp mills allow only a small proportion of these contaminants to remain in the stocks when the rie is delivered.

The device according to the invention has eliminated both of these drawbacks and the invention is thus an important link in the overall work of the fiber raw material. that t alt o a not taking.

The features of the invention will become apparent from the following claims.

The invention is explained in the following embodiment as an example of the accompanying pi. i With reference to rust.

Figure 1 then shows a method of lifting a stump for transporting the finished crumb chips by car.

Pattern? shows the device according to the invention in plan view and in section along the line A-A.

Finally, Figure 3 shows a side view and a section along the line A-A of different embodiments of the rotor knives included in the device according to the invention.

Figure 1 schematically shows a method for recovering stumps and processing them into crumb chips before transport to a pulp mill or wood-fired heating plant. The stumps 1 are raised and split into 2-4 parts in a previously known manner by a stump lifting device ?, which places the stump parts 3 in piles 3a in a row-like system. In time, independently of the stacker 2, the stub conveyors 4 then transport the stub parts to the central stack 5 for the unloading location connected to the road. Preferably, the device according to the present invention is placed next to the carrying storage 5. The device, which is also independent in time from other machines in terms of its use, consists of a stump grinder! 1ysLä G equipped with a vibrating, rock-separating feed table 7, a stubble grinder grinds the stump parts into crushed stone 9. separating the crushing chip 8 blowing device 8 so that the blowing mouthpiece 10 blows the crushing chips in a controlled direction, so that the crushing chips can form a pile 11 which, due to space saving, can be made considerably high in size on the ground. The stacked crumb chips 11 are then picked up, e.g. by a truck 12, which transports the crumb chips to a factory or other place of use.

Figure 2 shows the device according to the invention in more detail. After the carrier parts 3 have been placed on the feed table 7 by means of a loading device (not shown), the feed table 7 is caused to vibrate vertically. Since the feed table 7, as shown, rests against the feed shaft 13 of the grinding mill 6, the carrier parts 3 continuously move towards the feed shaft 13, finally falling into a mill rotor 14 arranged in the feed shaft, equipped with helically arranged rotor knives 15 which grip the parts 3 rouheha-press a button. The design of the rotor knives 15 as cutting blades and their placement on the rotor 14 contributes to the transfer of the crumb chips to the cylindrical rotor housing 17 under the rotor knives 15 and to their shape. in this case, the stone fragments which have passed through the mill 6 and blow the crushed chips into a stone-free pile i.

The coarser and surface stones and soil have already been removed from the stump parts 3 after passing the feed table 7. At the same time as the feed table 7 is vibrated to feed the stump parts to the mill, any stones and soil are shaken off and fall to the ground between the grid bars 19 in the feed direction.

To operate the mill, it may be equipped with an internal combustion engine 20 if it is to be mobile, but it may also be equipped with an electric motor in cases where the equipment will be stationary. Once made mobile, it can be placed without - - - Γ

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6 'ο Ο 3 Ο a self-propelled trailer or a vehicle, truck or conveyor equipped with a drive, which gives better conditions for mobility and thus also for capacity.

As shown in Fig. 3, the steel side of the rotor knives 15, 15a and 15b, respectively, may be at a different angle c * to the upper surface of the counterblades 16, as shown, the steel side of the rotor knives 15b at an angle d at an angle turned away from the steel side rotor.

As can also be seen from the section AA in Fig. 3, the steel side of the rotor knives 15 may have a different cross-section, namely as shown in vi.i with mark a it may have a groove and two sharp cutting edges, reference mark b straight cutting edge reference mark e a sharp cutting edge on one side, a sharp cutting edge in the center formed by the reference e for a double chamfer] and a sharp cutting edge on the other side provided by a chamfer f.

Claims (4)

66030 1. Apparatus for comminuting stumps into chips and for simultaneously separating stones and other impurities in stumps using a crushing mill with a rotor arranged mainly in a horizontal shaft, equipped with a rotor knife, and counterblades fixedly fixed to the shaft, characterized in that the rotor 15) is arranged in the direction of the rotor axis according to the helical line and that the counter-blades (16) are separately arranged mainly axially along the inside of the shaft (13), whereby the rotors (14) crush the supports (3): rotor knives (15) and counter-blades (16) during simultaneous feeding in the shaft (13) along the rotor (14) and during the release of rocks and other contaminants, and that after the grinding mill (6) in the feed direction an outlet device (8) is provided for feeding the fed chips out to a place separated from the stones and other impurities angle scenes. Device according to claim 1, characterized in that the discharge device consists of a blowing device (8) provided with an orientable mouthpiece (10) for guided blowing of the crushed chip (9) to said location. Device according to claim 1 or 2, characterized in that the steel side of the rotor knives (15) and the surface of the counterblades (16) turned towards the steel side as the steel side passes said surface have an angle to each other which is turned to the rotor (14). is essentially equal to zero or is turned away from the rotor. Device according to one of Claims 1 to 3, characterized in that the free ends of the rotor knives (15) are bevelled to form a blade-shaped cutting edge (a, c, d, e, f).