WO2017133720A1

WO2017133720A1 - Comminuting machine comprising a feed chute and method for feeding material into a comminuting machine

Info

Publication number: WO2017133720A1
Application number: PCT/DE2017/000016
Authority: WO
Inventors: Peter SOPORA; Stefan Reimann; Marc Hanheide
Original assignee: B. Maier Zerkleinerungstechnik Gmbh
Priority date: 2016-02-04
Filing date: 2017-02-02
Publication date: 2017-08-10
Also published as: DE102016001277A1; DE112017000655A5

Abstract

The invention relates to a comminuting machine comprising a feed chute for feeding material (24), the feed chute being arranged in a feed hopper (7), and an inclined sliding surface (9) with a cleaning face (18) for separating fine material (22) from the material (24). The invention is characterised in that the cleaning face (18) has raised sections (17), preferably transversely to the sliding direction (25), for producing one or more movements (19), in particular flying movements, of the fed material (24). In particular, openings (20) can also be provided behind these raised sections (17) in order to separate off the fine material (22) that is knocked off material (24) bouncing over the raised sections (17).

Description

Crushing machine with a feed chute and method for feeding material into a crusher

The invention relates to a comminution machine with a feed chute for feeding material according to claim 1 and to a method for feeding material into a comminuting machine according to claim 13.

For the production e.g. of chipboard or OSB boards (English oriented Strand board) wood must be provided in elongated, slender chips. to

Manufacture of such chips are used in particular Messerringzerspaner, as they are e.g. from DE 197 24 325 C1 or DE 100 58 626 A1 are known. The feed material is fed to the Messerringzerspaner via an inlet funnel, which usually takes place a cleaning of the feed material before the inlet funnel.

From DE 101 46 512 C1, for example, a plant for cleaning wood-rich material is known. The wood to be cut is known in this

Device initially guided by a feed device. This is one

Vibration channel provided, which is provided with a sieve. The partially made of recycled wood can here from sand, earth or other

Coarse cleaning of contaminants before passing through an air classifier. Here, in particular by an air flow, which causes the sighting and at the same time serves as a promotional force for the further transport of the wood, relatively heavier particles in the discontinued material after the

Vibratory chute are left, further discarded. The problem with this known device, for example, that the generation of the air flow is relatively energy-consuming and thus causes high costs.

It has indeed been thought, to dispense with this aspect on a wind sifting. Then the feed material from the vibrating trough ultimately falls on a sliding surface, over which it enters the central region of a rotor of the

Crushing machine arrives. However, this leads to impurities, in particular also on the feed material, for example adhering sand, soil, etc., being introduced into the comminuting machine, which in this case forms a knife ring chipper.

Confirmation copy | reach. There, the wear of the knife is increased by such impurities.

In addition, depending on the starting material used, it may happen that despite the cleaning steps described above, whether with or without air classification, contaminants, in particular sand, can still adhere to the supplied wood.

The object of the present invention is therefore to specify a comminution machine and a method for feeding material into a comminuting machine, by means of which the cleaning of the material before entry into the comminution space of the comminution machine is improved.

This object is achieved by a crusher with a feed chute for feeding material, wherein the feed chute is arranged in an inlet funnel and has an inclined sliding surface with a cleaning surface for depositing fine material from the material, wherein the cleaning surface has elevations, preferably transversely to the sliding direction Generation of one or more movements, in particular flight movements, of the material supplied.

The advantage of the invention is that the material supplied is cleaned prior to entry into the crushing machine by the integrated into the sliding surface cleaning surface of fine material such as sand or dirt particles. By cleaning directly in the feed to the crushing chamber of

Crushing machine can be ensured that the material is optimally freed of fine material with or without previous first cleaning steps.

The cleaning surface should in particular separate the fine material from the supplied material. However, this surface can also serve to remove particles which are too small or unusable for comminution, since the comminution of such particles does not lead to the desired results. Thus, when crossing the cleaning surface, the material can be freed not only from the fine material but also from other particles. The elevations additionally set the material in motion, and this movement causes the fine material to be increasingly knocked off by the material being fed. The movement may, for example, be a flight movement, a jolting or hopping movement of the material over the cleaning surface. Also conceivable would be a more sliding, but provided with pulse surges

Movement of the material. The elevations may optionally have a uniform or different distance to the cleaning surface.

Preferably, for discharging the chopped fine material in the

Cleaning surface openings, preferably behind an increase arranged. Through these openings fine material can be removed directly after the separation of the supplied material and thus no longer remains on the cleaning surface. By the direct discharge of the fine material through the openings is also prevented that after knocking off the fine material with this further, supplied material comes into contact and may eventually adhere there again.

Alternatively or in combination, the openings in the cleaning surface may be smaller than the supplied material. This can ensure that only the fine material is discharged through the openings and no good material, which is to be supplied to the crushing machine.

Preferably, the material supplied contains in particular lignocellulose-containing material, such as woodchips, branches, wood recycling material.

In particular, the elevations are arranged regularly and / or irregularly over the cleaning surface. The arrangement may depend on the supplied material or be variably adjustable.

Preferably, the elevations and / or openings are preferably transverse to

Sliding direction multiple side by side and / or running continuously

arranged. The elevations and / or openings can be over the entire

Run cleaning surface or be arranged in sections several times. It is also possible for a plurality of elevations or openings to be formed in a row both transversely and along the sliding direction. In a preferred embodiment, the elevations are transverse to

Rutschrichtung extending steps formed, which are punched out of the material of the cleaning surface and bent upwards in one piece, wherein an opening in the cleaning surface is formed by the bending at the same time. Thus, an increase as well as an opening in the cleaning surface is simultaneously generated by means of a processing step in the course of the production of the cleaning surface.

In particular, the cleaning surface and / or the sliding surface can be configured in such a way that it can execute these oscillating or vibrating movements. In this way, the movement of the material, in particular the flight movement, can be positively influenced, since the movement of the cleaning or sliding surface of the material, an additional pulse can be transmitted. Furthermore, it can also be prevented that the supplied material remains there.

Preferably, a collecting container and / or a suction is mounted below the cleaning surface. The suction also removes fine material that may stick to the cleaning surface. The extraction should be adapted to the material and the fine material. By too strong

Extraction could cause material to adhere to the cleaning surface.

Alternatively or in combination, at least one rib extending essentially in the direction of slipping can be arranged on the underside of the cleaning surface to reinforce the cleaning surface. This can be particularly advantageous if the elevations and openings are formed directly from the cleaning surface, for example by punching and bending. A rib then improves the stiffness of the cleaning surface and thus allows longer service life.

In an advantageous embodiment, the feed chute can be arranged in an inlet funnel with an upstream first purification stage. The upstream first cleaning stage may be a mechanical cleaning, for example by means of vibration tables, as well as an air separation within the inlet funnel. Alternatively or in combination with the above embodiments, the feed chute may be arranged such that the material slides from the feed chute into the central area of the crusher. Alternatively, the feed chute may be located immediately prior to entry into the milling chamber of the crusher. The feed chute thus forms a final cleaning stage before comminution.

In a further preferred embodiment, the comminution machine is a knife ring chipper.

A further solution to the problem is given by a method for feeding material in a crushing machine, wherein the material is fed via an arranged in an inlet funnel feed chute with inclined sliding surface and the material is cleaned over a arranged in the sliding surface cleaning surface of the fine material, wherein integrated in the cleaning surface

Increases one or more movements, in particular flight movements, of the material generated. By generating movements of the material such as flight movements, shaking or jumping movement, the fine material is cut off from the material and thus the quality of the in the

Crushing machine or the crusher chamber supplied material improved.

In particular, the fine material cut off from the material can be removed via openings in the cleaning surface. This should preferably be done before the material is fed into the crushing machine for comminution.

Alternatively or in combination, the cleaning surface and / or the sliding surface can be vibrated or shaken. By this additional movement of the cleaning and / or the sliding surface on the one hand, an additional impulse can be transferred to the material, which can positively influence the knocking off of the fine material, and on the other hand, by this movement also the attachment of fine material and material on the sliding surface and / or the cleaning surface prevented. Further advantages and features of the invention will become apparent from the dependent claims and the following description with the drawings.

Showing:

Figure 1 sectional view through a crushing machine;

Figure 2 shows an enlargement of the inlet funnel of the crushing machine according to

Fig. 1;

FIG. 3 shows the sectional view through a cleaning surface;

4a shows the top view of a cleaning surface and

Figure 4b is a sectional view of the cleaning surface of Figure 4a.

In Figure 1, a crushing machine is shown in a section. The material to be crushed is fed to a vibrating trough 1 and conveyed by this with the aid of an unbalanced motor 2 and sprinkled into the inlet funnel 7. The discontinued material 24 is, for example, rough pieces of wood, for example wood chips, or also wood residues, branches or wood recycling material.

Within the vibrating trough 1, a sieve 3 is provided, can be separated by the contaminants from the material to be processed 24. such

Impurities are discharged separately via an outlet 4.

The pre-cleaned material 24 delivered by the vibrating trough 1 is subsequently passed over a magnetic shaft 5, at which ferromagnetic impurities are still separated from the material 24 falling from the vibrating trough 1. The sorted out by the magnetic shaft 5 ferromagnetic material is also discharged via a separate outlet 6.

The cleaned in a first step material 24 falls into an inlet funnel 7, where it is passed to one or more preferably pivotable baffles 8 to fall from these on a sliding surface 9 or be passed over the material 24 in the central region 10th a Messerringzerspaners 13 slips. In the inlet funnel 7 may optionally be arranged a fan, via which a

Air flow can be injected into the inlet funnel 7. About the blower can depending on the specific weight larger impurities, which could not already be removed from the material flow in the vibrating trough 1 via the wire 3, are selectively deposited.

In a Messerringzerspaner 13, a rotor 11 is rotated by a motor 12 and a corresponding gear in rotation. At its circumference, the rotor 11 has a plurality of substantially radially aligned rotor blades 14 which capture and clean the material 24 introduced and cleaned in the central region 10 radially outwards, this material 24 being attached to the blades 15 of the radially outer knife ring, which surrounds the rotor 11, is passed. In order to achieve a better distribution of the material 24 in the Messerringzerspaner 13, can in

Central area 10 a device for uniformly distributing the material 24, for example, a disc or a distributor rotor may be arranged. The elongated chips produced by a discharge chute 16 from the

Messerringzerspaner 13 removed and fed to further processing.

The knives 15 may be exposed to increased wear if fine material 22, such as sand or dirt adheres to the material to be comminuted 24 despite first cleaning steps.

In order to be able to separate this fine material 22 from the material 24, as shown in FIG. 2, the sliding surface 9 is provided with elevations 17

Cleaning surface 18 integrated. The falling material in the inlet funnel 7 24 is guided by the baffles 8 so that it is before entering the

Messerringzerspaner 13 which crosses the cleaning surface 18 integrated in the sliding surface 9. The sliding surface 9 may consist at least partially of the cleaning surface 18. Optionally, the sliding surface 9 may be completely formed by the cleaning surface 18.

As shown in FIG. 3, the elevations 17 cause material 24 sliding over them, for example woodchips still containing fine material 22, for example sand, to perform a movement 19, in particular flight, at the end of which impinge on the top of the cleaning surface 18, so that so that the fine material 22 can be knocked off. By several in accordance with successive increases 17 this can be repeated for the material 24 several times, so that the material 24 is completely or almost completely freed from all adhering fine material 22 at the end. In order to support the movements 19, in particular flight movements of the material 24, the sliding surface 9 or the cleaning surface 18 itself can be set in motion, so that this surface carries out a jolting or oscillating movement. On the one hand, this can be an unintentional loss of material 24 on the

Slip surface 9 and the cleaning surface 18 prevent. In addition, by such a movement of the sliding surface 9 or the cleaning surface 18, an additional impulse can be transmitted to the material 24, which can positively influence the cleaning effect. The material 24 is then fed at the end of the sliding surface 9 for further processing in a purified form in the actual Messerringzerspaner 13 and processed into chips.

In order to be able to dispose of the separated fine material 22, respective openings 20 are provided in the sliding direction 25 behind the elevations 17, as can be seen in FIG. 3

intended. These are dimensioned so that the material 24 can jump over it during its movement 19, while that at the cleaning surface 18th

severed fine material 22, which due to its higher specific gravity can perform a different movement, in particular no so far flight movement, falls into the openings 20. Below the cleaning surface 18, in particular below the openings 20, a collecting container 21 is arranged, in which the fine material 22 can be collected, as shown in Fig. 2. Over a

Extraction of the collection container 21 or a direct suction of the

deposited fine material 22 below the cleaning surface 18, this can also be removed directly.

As can be seen in FIG. 4 a in the plan view of the cleaning surface 18 and in FIG. 4 b in a section through the cleaning surface of FIG. 4 a, the elevations 17 are formed, in particular, by steps or tabs bent out integrally from the cleaning surface 18. The openings 20 are punched out of the cleaning surface 18 together with the steps or tabs during their production. The bending out of the steps as elevations 17 from the cleaning surface 18 has the advantage that at the same time the openings 20 are formed in the cleaning surface 18. Across the width transversely to the sliding direction 25 may be arranged a plurality of steps designed as elevations 17 or only one continuous step. The distance from step to step both longitudinally and transversely to the sliding direction 25 be constant or different. The angle of attack or the spacing of the elevations 17 formed as steps relative to the cleaning surface 18 can also be the same or different for adjacent stages.

As a result of the elevations 17 bent out as steps, the cleaning surface 18 has a stiffening transversely to the sliding direction 25. To a stiffening also in

Rutschrichtung 25 to achieve the cleaning surface 18 is reinforced on its back with ribs 23. These can be welded to the back of the cleaning surface 18, for example, or be generated by lateral folds of the cleaning surface 18. A significant advantage of this provided with elevations 17 and ribs 23 cleaning surface 18 lies in the fact that such a cleaning surface 18 can be retrofitted, if necessary, even in existing machines.

The cleaning surface 18 can also be designed such that as elevations 17 additional elements are attached to the cleaning surface 18, for example by welding or screwing. By drilling or milling openings 20 can also be formed in the cleaning surface 18. The elevations 17 and / or openings 20 can then be arranged in a regular, at least partially regular or irregular pattern on or in the cleaning surface 18.

The elevations 17 as well as the openings 20 of the cleaning surface 18 may optionally be arranged adjustable. This allows that the angle of attack or the distance of the elevations 17 relative to the cleaning surface 18 as well as the size of the openings 20 can be adapted to the supplied material 24. List of Reference Numerals: P0192WO

1. vibrating trough

2nd unbalance motor

3. sieve

4th spout

5. Magnetic shaft

6. Spout

7. inlet funnel

8. baffles

9. Slip surface

10. Central area

1 1. Rotor

12. engine

13. Knife ring chipper

14. Rotor blade

15. Knife

16. discharge shaft

17. Increases

18. Cleaning surface

19th movement

20. openings

21. Collecting container

22. Fine material

23. Ribs

24. Material

25th slide direction

Claims

claims

Crushing machine having a feed chute for feeding material (24), the feed chute being disposed in a feed hopper (7) and having a sloped slide surface (9) with a cleaning surface (18) for depositing fines (22) from the material (24);

characterized in that the cleaning surface (18) has elevations (17), preferably transversely to the sliding direction (25), for generating one or more movements (19), in particular flight movements of the supplied material (24).

2. Crushing machine according to claim 1, characterized in that in the cleaning surface (18) openings (20), preferably behind an elevation (17), for discharging the fine material (22) are arranged. 3. Crushing machine according to claims 2,

characterized in that the openings (20) in the cleaning surface (18) are smaller than the supplied material (24) are formed.

4. Crushing machine according to one or more of the preceding

Claims, characterized in that the supplied material (24) contains in particular lignocellulose-containing material.

5. Crushing machine according to one or more of the preceding

Claims, characterized in that the elevations (17) are arranged regularly and / or irregularly over the cleaning surface (18).

6. Crushing machine according to one or more of the preceding

Claims, characterized in that the elevations (17) and / or openings (20), preferably transversely to the sliding direction (25) several times

are arranged side by side and / or running continuously.

7. Crushing machine according to one or more of the preceding

Claims, characterized in that the elevations (17) as transverse to Rutschrichtung (25) extending steps are formed, which are integrally punched out of the material of the cleaning surface (18) and bent up, wherein at the same time an opening (20) in the cleaning surface (18) is formed by the bending up.

Crushing machine according to one or more of the preceding claims, characterized in that the cleaning surface (18) and / or the sliding surface (9) is designed to perform vibratory or vibrating movements.

Crushing machine according to one or more of the preceding claims, characterized in that below the cleaning surface (18) a collecting container (21) and / or a suction device is mounted.

Crushing machine according to one or more of the preceding

Claims, characterized in that at the bottom of

Cleaning surface (18) at least one substantially in the sliding direction (25) extending rib (23) for reinforcing the cleaning surface (18) is arranged.

Crushing machine according to one or more of the preceding

Claims, characterized in that the feed chute is arranged such that the material (24) from the feed chute into the

Central area of the crusher slips.

Crushing machine according to one or more of the preceding

Claims, characterized in that the crushing machine is a Messerringzerspaner (13).

Method for feeding material (24) into a comminution machine, in particular a knife ring chipper (13), wherein the material (24) has a feed chute with a sloping feed chute (7) arranged in an inlet funnel (7)

Slip surface (9) is fed, wherein the material (24) by a, in the Slip surface (9) arranged cleaning surface (18) from the fine material (22) is cleaned,

characterized in that by, in the cleaning surface (18) integrated elevations (17) one or more movements (19), in particular

Flight movements of the material (24) are generated.

14. The method according to claim 13, characterized in that the material (24) chopped fine material (22) via openings (20) in the

Cleaning surface (18) is discharged.

15. The method according to claim 13 or 14, characterized in that the

Cleaning surface (18) and / or the sliding surface (9) can be vibrated or vibrated.