CN1194886A

CN1194886A - Hammer mill or hammer crusher

Info

Publication number: CN1194886A
Application number: CN98105149A
Authority: CN
Inventors: R·霍夫曼
Original assignee: Noell Service und Maschinentechnik GmbH
Current assignee: Noell Service und Maschinentechnik GmbH
Priority date: 1997-03-29
Filing date: 1998-03-27
Publication date: 1998-10-07
Also published as: JPH10277417A; GB9805580D0; FR2761279A1; FR2761279B1; GB2323545A; BR9801139A; ZA981814B; AU5840298A; DE19713264C1; CA2229957A1

Abstract

The invention relates to a hammer mill or hammer crusher which is provided with two rotors (2, 3) inside the housing (1). The rotors are essentially encircled by grinding paths (13), which are laterally retractable from the housing in an essentially horizontal direction. Provision is thereby made for the innermost section (23) of the grinding path located behind the rotor and projecting upwards from the lowest part of each rotor to be tilted downwards on retraction of the grinding path (13) and thus freeing this part to pass beneath the rotor. According to the invention, curved flanges are provided on the downwardly tiltable section, which are supported by a counter-support (30) when the grinding path is advanced from its withdrawn position to its working position to raise the tiltable section to its working position.

Description

Hammer mill or hammer mill

The present invention relates to a kind of have at least one rotor of being furnished with percussion tool and at least one this rotor or each rotor configuration as the grating unit of reaction percussion tool or grind the unit, this unit surrounds this rotor and at least in part by shock plate, grating or sieve and the jaw of fixing them are formed, this unit be provided with one can implement approximate horizontal motion have many rollers to the guider of guide rail, so that from shell, take out the grating unit or grind the unit, a part that makes this grating unit or grind the unit with a kind of device drops to such degree, promptly be positioned at and shift out the direction back and vertically when shifting out, break away from rotor, when shifting out, project upwards in the grating unit of rotor lowermost portion or this part of grinding the unit makes and can overturn by means of the hinge that is fixed on this unit downwards by the part that projects upwards in the grating unit of rotor minimum point or grind the unit of armature spindle sectional plane.

This grater or disintegrating machine carry out fragmentation by the impact of atwirl hammer and the common actions of reaction instrument, and have one or two rotor and have the high ratio of reduction as single shaft or twin shaft hammer mill or disintegrating machine.Wherein, the reaction instrument surrounds rotor, is only interrupted by material inlet.According to the material that is broken and the ratio of reduction, the reaction instrument by sieve, grind bar or grind plate or the combination of these instruments is formed.The material that is ground is carried through sieve or grating by air-flow and is left grater or disintegrating machine.Wherein material outlet is arranged on a rotor or a plurality of rotor below or top.In order to reach the try one's best high efficient or the high ratio of reduction of trying one's best, the reaction instrument should surround one or more rotors as far as possible.

This reaction instrument stands high wearing and tearing, so must be easy to change.Be furnished with a guider that can produce horizontal movement in the sort of sieve unit that is arranged on by disclosed impact of document DE-PS472243 or hammer mill below the rotor that beginning is mentioned the time, this guider by some rollers to the right guide rail of these rollers be installed formed.For when from the disintegrating machine shell, shifting out the sieve unit, can make be positioned at the back vertically projecting upwards of the sectional plane by armature spindle in the part of rotor minimum point break away from rotor, this part is made and can overturn downwards.

For this reason, being hinged on the plate that a flip portion on the carriage is fixed this bearing bracket jaw with an axle or held sieve.This axle of fixedlying connected with flip portion has a bar, and one of effect is transited into the pull bar of silk axle on this bar.Can make this bar rotation by means of a crank that is contained on the silk axle, and make the motion parts upset of screen apparatus.But this complex structure, and except moving component such as lever, connecting rod and particularly screw mandrel all be arranged in material stream and suffer stained or wearing and tearing, can only operate with hand with crank, this is pretty troublesome.This hand operated is not suitable for large-scale hammer mill or hammer mill yet.

DE3215882Al discloses a kind of hammer mill, and this disintegrating machine is arranged on the grating unit of rotor below and is furnished with a guider that can produce the approximate horizontal motion, this guider by roller to the right guide rail of this roller be installed formed.For when the disintegrating machine shell shifts out the grating unit, make be positioned at the back vertically the projecting upwards of the sectional plane by armature spindle in the part of respective rotor minimum point break away from rotor, guide rail is arranged to tilt, the grating unit just can descend when shifting out like this.

But need the setting of staggering of track with the front and back roller, like this, a grating unit needs four tracks or outside roller must make by an additional mechanism to regulate altogether for this reason.Document suggestion in addition, grinding pressure is born by a support column, and corresponding grating unit and grating jaw thereof are housed on this pipe.This complex structure and costliness are because track must accurately cooperate with corresponding support column and other housing parts with roller and grating unit with its gradient.In addition, the twin shaft hammer mill of describing at this place is provided with an anvil except also making also to add at the center the grating that grinds plate, and it is pretty troublesome that this anvil is changed separately.

Top description is equally applicable to the hammer mill that document DE2140026Al proposes.Be in addition that with the district of aforementioned prior art the framework that takes out that has each rotor configuration of corresponding housing parts, installation jaw and grating cage is bearing on the different tracks.Externally in the scope, track is put into the basis of supporting hammer mill, and supports on the outer roller that is fixed on the housing parts that can take out.In addition, the jaw that is connected with housing parts itself makes guide rail, these guide rails can side direction be contained on the shell roller on roll.Also be provided with outside and inner bearing, housing parts and grating cage are bearing on this bearing.In addition, the inward-pointing part of grating cage seldom encases rotor, so the grating cage does not need or only need seldom decline.Hammer hangs on the rotor movably, so hammer can be avoided.In this structure, inboard grating or must change separately near the grating that is arranged under the situation of double-rotor mill the center.

Task of the present invention is various shortcomings and a kind of like this hammer mill of proposition or a hammer mill of avoiding above-mentioned prior art to exist, be that its reaction instrument farthest encases respective rotor to improve crushing effect, and all be arranged on grinding plate, grind grating or grind screen sections and all being convenient to lead to of a rotor or a plurality of rotor below, thereby be convenient to change.And realize the required cooperation of member processing easily, thereby reduce cost.

This task of the present invention is to solve like this: each grating unit or grind the unit downwards the part of upset have one at least and make curved flange, in the grating unit or grind and head on a bearing when unit moves into, turnover part just can make progress and be pressed into the operating position continuously with this flange.The worker just can singly be by the grating unit or grinds the unit and move in the shell and flip portion is shifted onto on the operating position of rotor back because this refers to execute.

This structure can make and grind the unit and surround respective rotor as far as possible, all can cancel so for example be fixedly installed on reaction instrument between the rotor on the shell such as anvil or similar tool in double-rotor mill or grater.Because grating unit or the flip portion that grinds the unit upwards no longer protrude in the minimum point of respective rotor, so grating unit or grind the unit and just can unhinderedly shift out.

Though document DE-AS1930038 discloses a kind of impact breaker, its rotor surrounds from the below by the grating cage, and the grating cage is done as a whole can the upset downwards and outwards; The housing parts of sidepiece makes and can repeatedly overturn by means of hinge, but this is that the grating cage then is difficult to lead to, thereby can only change as a whole, thereby makes maintenance work become very expensive for the sensible rotor from the top.

In another structure of the present invention, in each grating unit or grind on the bearing of shaped form flange guiding usefulness of unit and all be provided with guide roller, these guide rollers have reduced the grating unit or have ground unit required power when shifting out and moving into.

In addition, in dual-rotor structure of the present invention, grating unit or the flip portion that grinds the unit make on the operating position and are supporting mutually, and bearing has just been laid down grinding pressure like this, so the guide roller of bearing and the setting of this place can design gentlier.

Embodiments of the invention as shown in drawings, that is:

Fig. 1 represents that hammer mill of the present invention also can be called the longitudinal section of hammer mill;

Fig. 2 represents the grating unit or grinds the amplifier section sectional view of the flip portion of unit;

Fig. 3 represents the partial cross section figure of grating unit that part shifts out or the flip portion that grinds the unit.

As shown in Figure 1, hammer mill has a shell 1, and two rotors 2,3 are set in this shell, and this rotor has many 4 hammers, and these hammers can be rotated to support on the corresponding rotor with bolt 5.Hammer mill has one and is broken or the material inlet 6 and the outlet 7 of ground material.In this example, be broken or upwards discharged by means of air-flow by ground material, its rotor at full speed along the arrow directions X around axle 8,9 rotations.Material inlet 6 opens wide, and material outlet 7 is provided with grating 10, and these gratings are fan-shaped section and surround rotor 3, and have only fully grind 3 material just can be by the slit between the grating.All the other fan-shaped section that grind chamber 11,12 are with grinding plate 13 sealings, and these grind plate by shock plate 14 with alternately place space bar 15 therebetween to constitute.

These grind plate and are arranged on the place of being convenient to lead between two rotors 2,3 in top.But also be arranged on rotor below, at this moment grind plate and space bar have only when its be moved in advance that the maintenance personal also can reach be replaced the position of part the time just can keep in repair and change.For this reason, the following plate that grinds is contained on the jaw 16,17 that can shift out from shell 1, the outside and shell terminal of each one section shell wall, 18,19 formation of this jaw.Jaw is provided with roller to 20 at its downside, and what they will constitute like this grinds unit bearing on guide rail 21,22.Grind the unit with not shown mobile device for example the hydraulic cylinder piston device from grater shell 1, shift out or move into again in the shell 1.

Every grinds plate 13 inward-pointing parts 23 and all projects upwards in the minimum point of respective rotor 2,3 a sizable size is arranged.For each grinds the unit and grinds plate 13 and can shift out from shell 1, grind the unit and project upwards in the part 23 of fixed rotor part and be designed to and overturn downwards.Can know from Fig. 2 and to find out that this part 23 is made up of the

shaped form flange

24,25 of paired setting, and locking piece 26 is fixed shock plate 14 and space bar 15 on it.

Flange

24,25 usefulness hinges 27,28 are fixed on the jaw 16,17 and are turning.

At the center of grater shell 1, below between the shell wall, a beam 29 is set, a bearing 30 is set on this beam, this bearing and

curved flange

24,25 interact.For the ease of motion process and

flange

24,25 guiding, bearing 30 is furnished with

roller

31,32, and horizontal lamellae 33,34 or 35,36 constitutes jaw 16,17 corresponding terminals and towards a side of flange 24,25.The corresponding flip portion that grinds the unit 37 is provided with a bar 38 or 39 in the upper end, and wherein this two bar 38,39 can contact the flip portion that grinds the unit with supporting.

As shown in Figure 3, grinding the unit when shifting out, curved

rib

24,25 rolls on the

roller

31,32 of bearing 30, and so corresponding part 23 just can be turned to such degree downwards, promptly grinds rotor 2, the 3 below along continuous straight runs that the unit can be provided with above it accordingly and outwards moves.

Claims

Hammer mill or disintegrating machine have at least one rotor of being furnished with percussion tool and at least one this rotor or each rotor configuration as the grating unit of reaction percussion tool or grind the unit, this unit surrounds this rotor at least in part and is made up of shock plate, grating or sieve and the jaw of fixing them; This unit is provided with one can realize what approximate horizontal was moved, have many rollers to the guider of guide rail, so that from shell, shift out grating unit or fragmentation cell, a part that makes this fragmentation cell or grind the unit with a kind of device drops to such degree, promptly be positioned at and shift out the direction back vertically by the armature spindle sectional plane, the part that projects upwards in the grating unit of rotor minimum point or grind the unit breaks away from rotor when shifting out, this part that projects upwards in the grating unit of rotor lowermost portion when shifting out or grind the unit makes and can overturn downwards by means of the articulated elements that is fixed on this unit, it is characterized in that, each grating unit or grind unit (13,16/17,18/19,20) downward flip portion (23) has at least one and makes curved flange (24,25), move into the grating unit or grinding unit (13,16/17,18/19,20) withstand bearing (30) with this flange the time, turnover part just can upwards be pressed into the operating position continuously.
2. by the hammer mill or the disintegrating machine of claim 1, it is characterized in that, realize the guiding of shaped form flange (24,25) by the roller on the bearing (30) (31,32).
3. by the hammer mill or the disintegrating machine of claim 1, it is characterized in that in dual-rotor structure, grating unit or the flip portion (23) that grinds unit (13,16/17,18/19,20) make on the operating position and supporting mutually.