SU1500477A1 - Chipping machine for crushing whole stumps - Google Patents

Abstract

The invention relates to the timber, pulp and paper and woodworking industries. The purpose of the invention is to intensify the grinding process and improve the quality of the fractional composition of the resulting chips. In the inlet of the discharge chamber 5 are mounted at an angle of 15-45 ° to the axis of rotation of the rotor 3 of the counter-knife 9 of curvilinear shape. Curved anvils 9 are placed relative to each other at a distance of 3–30 mm and assembled into a section, and the cutting edge of each curvilinear anvil is performed along a helix. As the chips are removed under the force of gravity and the component cutting force, the stump 11 is drawn into the cutting zone towards the linear counter-knife 6 and is ground. Chips fall on the curvilinear counter-knife 9, where the separation of conditional chips from large and regrind large chips. The remaining longer wood particles from the curvilinear counterblades 9 fall on the straight counterblades 8, 7, 6, are comminuted and again fall on the curvilinear counter blades 9, where the grading of conditioned chips occurs. 5 il.

Description

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anvils 9 are placed relative to each other at a distance of 3-30 mm and assembled into a section, and the cutting edges of each curvilinear anvil are made along a helix. As the chips are removed under the action of the force of gravity and the component cutting force, the stump 11 is drawn into the cutting zone to the linear counter-knife 6 and i-; | Q is getting smaller. Chips fall on the curvilinear counter-knife 9, where the separation of conditional chips from large and regrind large chips. The remaining longer wood particles from the curvilinear counter knives 9 are pressed onto the straight line counterblades 8, 7, 6, dredge and again fall on the curvilinear counterblades, where the conditioner is sorted out. 5 il.

FIELD OF THE INVENTION The invention relates to wood, pulp and boom; wood and woodworking industry.

The purpose of the invention is to intensify, the grinding process and the quality of the fractional composition of the resulting chips.

Figure 1 shows the chimas maschina, general view; FIG. 2 is a view A in FIG. 1 (from the side of obliquely installed curvilinear counter knives); on FIG. 3, view B in FIG. 1, (curved anvils assembled into a section) in FIG. 4 — view B in FIG. 1; Fig. 5 is a diagram (in plan) of cutting off a large chip with a plate-type knife that has fallen between additional counter blades.

All knots of the chipper mashina are located on the welded frame 1.

In the upper part of the chipper frame 1 there is a loading chamber 2. On the surface of the rotor 3, the plate-shaped knives 4 are fixed in a staggered manner. In the lower part of the frame 1 there is an unloading chamber 5, which has an inlet opening on the rotor 3 side and an opposite one.

In the lower part of the upper chamber of the loading chamber 2, as well as in the upper part of the discharge chamber 5, there are located straight-line counter blades 6-8, the cutting edge of which is parallel to the axis of the rotor 3.

The counter-blades 9 are mounted at an inlet of the discharge chamber 5 at an angle of 15-45 to the axis of rotation of the rotor 3. The curvilinear surface of the counter-blades 9 is installed with a clearance of 0.5 mm to the rotating dish-shaped blades 4. The curvilinear counter-blades 9 have stiffening ribs 10 and accommodate relative to each other at a distance of 3-30 mm. Curved anvils 9 are assembled into a section and the cutting edge of each curvilinear anvil 9 is completed along a helix.

In order to eliminate the blockage of chips between the curvilinear counter-guns 9 and stiffeners

The 10-crooked counter-knife 9 size in should be larger than the size in.

The angle of the curvilinear counter-blades .9 relative to the axis of rotation of the rotor 3 is consistent with the frequency of rotation of the rotor 3 and the distance between the disc blades 4.

Chipping machine works as follows.

The rotor 3 is driven electrically. The stumps 11, preliminary cleaned, are loaded into the loading chamber 2. The rotor 3c with disc-shaped knives 4 performs a double function.

The first, as a cutting mechanism and the second, as a feed mechanism. Pre-cutting and crushing mon

11 and the production of mixed chips, coarse and fine, begins in the loading chamber 2 of the chipper. The stump 11 rests on the inclined wall of the loading chamber 2, and the disc-shaped knives 4 remove chips from it.

Since the disc knives 4 are located on the rotor 3 in a checkerboard pattern and overlap each other, a continuous layer of chips is removed to a height

cutting blade disc 4 ..

Passing the straight line counter-knife 6, the chips have a mixed fractional composition in the presence of large and small wood particles. Next, the mixed chips fall on the curvilinear counter-knives 9, where separation of the conditional chips from the large ones and regrinding of the large chips occurs. Since the curvilinear counterplaces 9 are spaced apart from

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3-30 mm each, then all wood particles, shorter than 30 mm, are ejected through the spaces between curvilinear counterblades 9 into the discharge chamber 5. The remaining longer wood particles from curvilinear counterblades 9 are crushed into straight line counters 8, 7, 6 for a downmill - then, after which IQ on curvilinear counterblades 9, where the regrinding and sorting of conditional chips and its discharge into the discharge chamber 5 take place, again fall.

The process of regrinding and sorting, thus, occurs continuously and automatically, which results in a high-quality fractional composition of the resulting chips.

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Claims (1)

Invention Formula A destructive machine for chopping whole stumps, including a frame, a cylindrical rotor, on the outer surface. In the staggered order, the plate knives, the loading and unloading chambers, the straight counter-blades, which, in order to intensify the grinding process and improve the quality of the fractional composition of the resulting chips, are mounted at an angle in order to intensify the grinding process and improve the quality of the fractional composition of the chips. 15-45 ° to the axis of rotation of the rotor are mounted curvilinear counterblades, which are set relative to each other at a distance of 3-30 mm, with the curvilinear counterblades assembled into a section, and the cutting edge of each curvilinear counter knife is made along a helix. Vida 2 View 5 Fa.Z ten Phage.ch FIG. five