DE1909239C3 - Device for shredding wood chips, wood chips or the like - Google Patents

Description

(See direction of claim 5 and 7 is swept over rotating flapping wings,

characterized by such an inclined position- 45 To increase the relative speed between

tion of the baffle bars (12) that these see the basket and racket tools and thus

Particles of the material to be processed are one of the means to increase the classifying and shredding performance

Air flow (19) opposite vector, the screen basket runs advantageously against the direction of rotation

exercise. ment of the rotor.

9. Apparatus according to claim 7 or 8, identifies 50 for the production of fine material of different fracs By designing the impact, the screen basket can have perforations of increasing size blades (7) as a fan for the sifter air. having the finest perforation in the way

10. Apparatus according to claim 7, characterized in that the material exiting radially from the grinding gap indicates that the material inlet side lies in the.

(13) Opposite housing wall air inlet 55 A further improvement of the processing will be

openings (14) are provided, advantageously achieved by the fact that in the path of the ra-

I1. Apparatus according to Claim 7, characterized in that material emerging from the grinding gap occurs indicates that the back of the carrier surrounds the grinding disks coaxially and mi disk (4) of the rotor disk (3) with additional valves downstream of the sieve basket in the axial direction lator wing wears. 60 aligned baffle ring, which together with the

12. Device according to one of claims 7 screen basket is swept over by the flapping wings,

to 11, characterized in that the impact ring is hereby the material after the grinding zone

(10) is conical and is crushed again in the direction before it is then in the nachgedcs The inlet of the classifier air opens. sorted screen basket and, if necessary,

65 is crushed. The flapping wings and / or the

The impact ring is preferably at an angle to the rotating

The invention relates to a device for the axis of the rotor running baffle strips, to reduce the size of wood chips, wood chips or

3 4

rungsgui a \ i ;; l across the width of the sieve basket- · -, eriei- dar. so that the passage τ new device

Ln / u can, the flapping wings are done with a »considerably above those known

approaching the distance lying in the plane of the grinding gap.

v. -.nkelung provided. Visual preparation of the individual particles in

A particularly advantageous embodiment lsi 5. -.bankizigkeit from their grain size possible. Through this

marked by one in the Rin »room. in which the Li! 'ι see achieve a whiter smoother material.

Flapping wings revolve, provided. on the other hand, axially this does not add any noteworthy proportion of the undesirable

directed air flow. Herewith is the Voriei! has leiiistsiui or dust.

KiP.den. that part of the pneumatic Abför can now be removed with just a single \ gg: -

il.iii of the processed goods required air as: o ga! . Manufacture in high quality Liuler / certificate, door or similar

■ sicl.ierluft can be used. previously several machines working separately from each other

1 ^: -Hic further improved execution! m is schinen erfcirderlicii goods that are correspondingly high

characterized by such a strange arrangement investment, a »black space requirement and loreicr-

ramg of the baffle strips, that this treats the particles of the devices between the separately working

• ;; The material to be prepared was ordered into one of the 15 air flow machines. As a result, are opposite

, -ntiieiiengerichtelen vector exercise. Devices of a similar type known as a result also e'.ie

;: mmi the mn appropriate speed, machine costs are considerably lower, the erioruer-

; '!

quickly to the sieve basket. while the grosser maintenance is much easier.

i hurry in the area of action of the pral! rin »es 20 in the drawing e ¹ -. exemplifying

■■ remain. until they have been destroyed accordingly. embodiment of the invention dargestell '.

-.ad. In order to get from the sifter air also against the The execution shown in the first section ;; '-,

! Ordered the direction of conveyance of the flapping wings and bouncing pads for a new type of shredding device

S. basket and through its perforation »etör from a housing 1. a fixed siatoi-

(iert to vverden. 25 disk 2 and a rotating rotor disk 3. the

When the flapping wing is designed as a valve, it is attached to a support disk 4. Last Mt /;

■ or for the viewer air, under certain circumstances an au! a shaft 5. which is mounted in the housing 1 and

Additional delivery unit for the latter is dispensed with driven outside this housing

will. In order to be independent of the inflowing An der 1 disc 4 are under

Sifter air does the air throughput / through the sieve basket 30 »a Ί carrier ring 6 several beat ode:

and thus also the Maierialdurehsat / increase and Wurillüttel 7 attached. These 1 lugs run in one

to be able to control, are expedient in the annular space 8 to and sweep over it

Housing opposite to the material inlet side - the inner wall of one of the grinding disks 2.3

vvand air inlets provided. The sieve basket V) surrounding the axially as well as a baffle

kiing can become even more pronounced as a result. that the 35 »es 10, eggs in the axial direction with the sieve basket ')

The back of the carrier disk is aligned with the rotor disk and in the path of the radial out of the grinding

sätzhch fan blades carries. gap 11 escaping material heg · The Piallnng

In a particularly advantageous embodiment 10 carries obliquely to the shaft 5 of the rotor 3 extending

the impact ring is conical and opens in impact strips 12, impact lugs. Cam. Hammer bars

Direction of entry of the classifier air. As a result, 40 or the like.

coarse parts are forced to come under the we- In one of the material inlet 13 opposite-

The viewer air and that through the surrounding housing wall are close to the shaft 5

When the flapping wing is triggered, centrifugal force is applied! of the rotor 3 air inlet openings 14 are provided,

The conical baffle ring surface can be equipped with adjustable blinds for a particularly long time

hold until they are crushed enough that they can go from 45.

Classifier wind against the slope of the cone to the

subsequent ^S: describes kön- tung dragged ebkorb: The material to be overall

nen. reaches in the direction of arrow 15 through a feed

By means of the device according to the invention, device 16 can, for example, not be shown

the following advantages can be achieved: 50 screw conveyor, in the material inlet 13 and from

In contrast to centrifugal mills. Pin mills, there under the action of the cloth driver 17 in the through

Impact ring mills or the like can be the new type of stator 2 and rotor 3 formed MahWpalt

machine also during operation by 11. Here there is a squeezing, rubbing and

Change of the gap width between the grinding-cutting comminution. The pre-shredded

disks at any time to the special, given material leaves the grinding gap 11 in a radial direction

possibly changing direction during operation according to the arrows 18 and thus arrives in

shafts of the material to be shredded, taking into account the annular space 8, in which the flapping wings 7

visualization of its hardness, structure and moisture. According to the arrow drawn

kcit can be adjusted. 19 the air required for the wind sifting occurs

Since the essential comminution in the first 60 takes place through an adjustable ring shutter 20 and a processing stage, in contrast to the annular channel 21 interrupted by ribs, the known devices in the near-axial direction in the working space 8 of the th screen basket n ^: r. ht more large amounts of insufficient flapping wing 7, which thus strolled around at the same time also broken up material, so that there is space. This air flow hits the one from which the energy expenditure is correspondingly lower. 65 Mahlspali 11 escaping pre-shredded material

By largely pre-shredding the material (see arrows 18 ^ and taking the material out of this

terials is now also the downstream sieve fine material approximately in the direction of the arrows 22 mil basket no longer bottlenecks in terms of throughput fine parts are thus against the inner wall of the

Mcbkorbes9 and finally through its perforation and thereby crushed so far that they finally conveyed through into a discharge space 23. Diejc- also captured by the air flow of the wind sifting niiicn! - 'parts that are not yet conveyed to the hole size of and to the screen basket 9. Sieve lining correspond to / wipe this. Through the air inlet openings 14, the round can the rotating flapping wings 7 so long after- Γ. gate 3 as a result of the suction effect of its flapping wings 7 crushed until they too have reached the discharge space 23 and or through additionally to its rear side, brought fan blades to suck in air. As a result, the coarser air that emerges from the grinding gap 11 can flow through the Siebkorh9 and Due to their higher kinetics, proportions arrive independently of the material throughput \ <m see energy in an approximately radial direction against io the amount of incoming classifier air increased u-id the m aiii area of the impact ring 10. This is where they will be controlled.

roughly corresponding to the wavy line 24 between the The finished shredded material leaves the machine

Impact strips 12 and the circulating flapping wings arranged on the floor of the discharge space 23

geln7 crushed. The baffle strips 12 are openings in the direction of the arrows 25. Here, a

so arranged obliquely to the shaft S of the rotor 3. 15 pneumatic transport device connected η

that they hit the coarser particles of the desired to produce the. 11th

material to be processed one of the visual effects indicated by the arrow a certain amount of air -Δ

19 marked air flow can be counter-rectified, which then according to the arrow 19 in ikn

ten vector exercise. Depending on the grain classifying space occurs. It is also possible to request the

Therefore, the coarser particles under the sifter air are increased in size by means of appropriate equipment

For different lengths of time in the area of the baffle ring 10, blow into the ring channel 21.

1 sheet of drawings

Claims (1)

Claims: the same vegetable materials in two I. Vorn.htuni: for chopping wood chips one after the other. nen. Holzhacksehnii / cln or the like \ e »eta- It is known to use such material on siebtlaeheu bilical materials in. lei in a row '. ·. · - or appropriately perforated grinding flac.ien in switched to university events. thus sfe - 5 cutter mills. Cross-beater mills or centrifuges, dal; the first processing muhicn. / Aischen throwing rings and on umlaut stage through well-known muhis discs (2.3 ι discs attached to throwing bars. Schiugnasen. Raseines Refiners is formed. those to be prepared in material flub teeth or in pin mills. Lm The direction of a / wide Aulheritun ^ sstule form a particular disadvantage in the preparation of the geder. According to the type of sieve basket mills named materials consists in the low weight Grinding disks coaxially surrounding the sieve basket set performance of the devices used for this purpose. (9) downstream is ·, the V ₁ Ui at the carrier- That is not enough! crushed material is aiii disc (4i of Ro'.orscheibe (3) mounted and the Siebflache thrown around, the only one of these Transfer on umlaut forming flapping wing (7) exceeds hälmi.smüßig succeed Zerkleinerungsefiekt which is painted. "i ₅ so daL '> a lot of useless friction arises and thus s: 2 device according to claim i. this results in a correspondingly high expenditure of force. In addition, denote !, daW the strainer basket ( ^l )) contrary to de; With the devices mentioned, there is no high-quality rotation. ζ of the rotor (3) rotates. Material that is produced by the woodworking 3 device according to claim! or 2. the material found for the surfaces of wood-based panels characterized in that the sieve basket (9) I.e. ; open and required for the production of molding compounds changes of increasing size, which is. finest Inehung in the way of the radial from the The invention is based on the object of a Milling gap ill) cherishes escaping material. Device of the type mentioned to create!) 4. Apparatus according to claim 3, characterized by »c- produce a high quality end product with the cattle indicates that in the path of the radially out 25 IaCt. that on the one hand only a little fine and dust the material escaping from the grinding pack (11), on the other hand, is not too large, however, any undesirable the grinding disks (2.3) has coaxially surrounding particles: the desired end product sol! and with that in the axial direction nachiieschaite- while in a single direction at ho as possible th strainer basket (9) is in alignment with the impact ring (Kl). Her volume output can be generated, with also which together with the sieve basket from the 30 during operation of the machine de Flip-flop wings (7) is pulled over. ren adjustments to the, if necessary, during 5. Device according to Ansp .ich 4. This means that the operation changes the properties of the zer indicates that the flapping wing (7) and or minor good such as hardness. Structure. humidity the baffle ring (K)) inclined / ur shaft (5) of the Ro- and the like should be possible. tors (3) carry running impact strips (12). 35 This object is achieved according to the invention on x (1 3. Device according to claim gekennzeich- surprisingly advantageous manner in that the net by an approximated in the Hbene the first Aufbereitun "lying Abvvinkelung Slevel by conventional grinding gap (11) of the flat grinding disks of a refiner, which are formed in chig designed flapping blades (7), material flow direction in the second processing device according to claim 1, marked stage forming, in the manner known per se sieve through a sieve in the annular space (8). in which the basket mills revolve around the flapping blades (7) coaxially surrounding the grinding disks, a screen basket is connected downstream of the disk of the rotor disk, which is axially directed at the carrier disk (19)