WO2010115484A1

WO2010115484A1 - Grinder, particularly coarse material grinder

Info

Publication number: WO2010115484A1
Application number: PCT/EP2010/000535
Authority: WO
Inventors: Michael Böhlefeld; Udo Becker
Original assignee: Amni Maschinenbau Gmbh
Priority date: 2009-04-07
Filing date: 2010-01-29
Publication date: 2010-10-14
Also published as: RU2011140139A; DE202009005340U1

Abstract

The invention relates to a grinder, particularly a coarse material grinder, comprising a rotor (2) populated with blades (4) and a stator (5) having a blade (5) that can be adjusted by translation by means of an adjusting device (20), wherein the blade (5) can be adjusted by means of the adjusting device (20) in the direction toward the rotor (2) and in the direction away from the rotor (2). In order to improve the grinder such that the stator blade can be adjusted more simply, the invention proposes that the actuator (20) comprises a hydraulic or pneumatic adjusting cylinder (8).

Description

Crushers, in particular coarse shredders

The invention relates to a shredder, in particular a Grobstoffzerkleinerer, comprising a fitted with knives rotor and a stator with a translationally adjustable by means of the adjusting device knife, the knife is adjustable by means of the adjusting device in the direction of the rotor and in the direction away from the rotor.

A crusher of the aforementioned and generic type is known from DE 20 2007 011 572 U1.

In the crusher according to DE 20 2007 011 572 U1 an adjustment of the knife of the stator, that is the stator knife by means of a mechanically operating spindle. This is to be operated via an adjusting nut with an appropriate tool. In this case, an intended adjustment of the stator blade is possible only after prior release of the stator blade in its position-fixing jaw.

Although the previously known from DE 20 2007 011 572 U1 shredder has been proven in everyday practical use, there is room for improvement, especially with regard to a simplified adjustment with respect to the stator blade.

It is therefore the object of the invention to improve a crusher of the type known from DE 20 2007 011 572 U1 to the effect that an adjustment of the stator blade in a simplified manner is possible. To solve this problem is proposed with the invention that the adjusting device comprises a hydraulic or pneumatic actuating cylinder.

The shredder according to the invention differs from the shredder previously known from DE 20 2007 011 572 U1 by the adjusting device for the stator blade. The adjusting device according to the invention, unlike the previously known construction does not have a mechanically operating spindle but via a control cylinder, wherein a hydraulic actuator or a pneumatic actuator cylinder may be provided. A hydraulic actuator is, however, preferred.

The embodiment of the invention has over the prior art known construction the advantage that an adjustment of the stator blade is less expensive and especially in a shorter time, that is, can be done much faster. In particular, an automated operation is possible.

The actuating cylinder provided according to the invention is preferably remotely controllable by means of a control device. A machine intervention on site, as this is required in the prior art .vorbekannte structure with respect to the adjusting nut for the adjusting spindle is avoided. Incidentally, a plurality of Stellzylindem can be controlled simultaneously in a simple manner, that is, it can be simultaneously adjusted or readjusted a plurality of Statormessern. In the construction of the prior art, this is not possible, which is why the inventive design also proves to be much more comfortable in this respect.

The adjusting cylinder is preferably a double-acting cylinder. The use of a double-acting cylinder is therefore provided because it allows a very precise adjustment of the stator blade relative to the rotor in both directions of movement radially to the rotor, that is, on the rotor to or away from the rotor.

According to a further feature of the invention, it is provided that the stator blade is held between a blade bearing surface and a contact surface, the blade bearing surface and / or the contact surface being / is provided with a coating. As a coating, for example, a Teflon coating come into question. The particular advantage of a coating of knife support surface on the one hand and contact surface on the other hand is that the static friction in Verstellbewegungsrichtung the knife between blade support surface and knife on the one hand and contact surface and knife on the other hand is reduced, which allows a Messerverstellbewegung without prior release of the contact surface providing clamping jaw. In contrast to the prior art, therefore, a knife adjustment without prior release of the knife in its position fixing jaw is possible. This results in the further advantage that a knife adjustment during operation can be made. It is therefore not required in contrast to the prior art, to interrupt the current operation.

According to a further feature of the invention, it is provided that the adjusting device has a positioning slide, which is coupled in a force-transmitting manner on the one hand with the knife and on the other hand with the actuating cylinder. In this case, the actuating cylinder and the adjusting slide by means of a coupling rod and the adjusting slide and the knife by means of a coupling member are releasably connected together. With this construction, it is ensured in an advantageous manner that a simple replacement of the knife, for example, in case of repair and / or wear-related wear in a simple manner and quickly possible.

With the crusher according to the invention, the possibility is created for the first time to be able to accomplish the setting of individual stator knives from the further by pressing a button within a very short time. In this case, such a setting during operation is possible. Compared to the manual adjustment given by the previously known design only at standstill, a significant improvement in handling is thus achieved. In addition, the inventive design allows a much faster adjustment of the knife, not least because all the blades of the stator can be adjusted simultaneously.

As a feed element for the knife feed is preferably a short-stroke, double-acting hydraulic cylinder is used with a knife feed in steps of 1/10 mm is possible. This feed accuracy is achieved by a metering valve, which allows each feed cycle only the amount of hydraulic fluid required for this flow into the cylinder. Here are the feed forces generated by the actuating cylinder or restoring forces on the one hand and the surface textures of knife support surface and contact surface on the other hand coordinated so that an adjustment of the knife is possible without a previous release of the knife in its position-fixing jaw is necessary.

With the invention, a stator with the vorerläuterten, statorgemäßen features is also proposed.

Further features and advantages of the invention will become apparent from the following description with reference to FIGS. Showing:

Figure 1 is a schematic representation of a crusher according to the invention.

Fig. 2 in a partially sectioned perspective view schematically a stator according to the invention and

Fig. 3 shows the stator of Fig. 2 in a partially sectioned side view.

Fig. 1 shows a schematic representation of a crusher 1 according to the invention, which may also be referred to as a granulator. The crusher 1 is used, for example, for the comminution of heavy materials, such as tires, electronic waste and / or the like.

1, the crusher 1 has a rotor 2 and a stator 5. Instead of just one stator 5, two stators 5 can also be provided. The use of two stators 5 can bring about the advantage of a double cutting process compared to the use of only one stator 5, which produces a higher cutting performance.

The rotor 2 is equipped with a plurality of radially extending knives 4. The rotor 2 rotates in the operating direction in the direction of rotation 3, as a result of which the blades 4 of the rotor 2 are guided past the blades 6 of the stator 5.

Below the rotor 2, a perforated screen 7 is arranged, which serves to retain not yet sufficiently fine crushed material. The operation of the crusher 1 is the following: Incoming material to be shredded is detected by the rotor 2 and guided past the stator 5. Here takes place at the summarized to a Statormesserleiste knives 6 of the stator 5, a material crushing. The crushed material is continued in the direction of rotation 3 of the rotor 2 to the perforated screen 7. Material that has already been sufficiently crushed, the perforated sieve 7 can happen. Material, however, which is still too coarse for the Sieblochung is fed by the rotation of the rotor 2 a post-shredding by being picked up again and passed by the stator 5 again.

The blades 6 of the stator 5 are subject to wear-related wear even during normal operation. Due to this, the gap S between the blades 6 of the stator 5 on the one hand and the blades 4 of the rotor 2 on the other hand increases. In order to keep the gap S between the knives 4 and 6 as constant as possible to achieve a desired shredding, the stator 5 per stator knives 6 each equipped with an adjusting device 20, which allows each associated stator knives 6 in the radial direction of the rotor. 2 To move in a translatory manner, that is to say in the direction of the rotor 2 towards and away from the rotor 2.

This adjusting device 20 according to the invention has a setting cylinder 8, as can be seen in particular from FIGS. 2 and 3 results.

The example in FIGS. 2 and 3 shown stator 5 has a knife bridge with a total of three knives 6. Each of these knives 6 is adjustable via an associated adjusting device 20. The partially cut views according to FIGS. 2 and 3 show an example of a knife 6 designed in accordance with the invention adjusting device 20th

An adjusting device 20 has an actuating cylinder 8, which is preferably designed as a hydraulic cylinder. About a coupling rod 9 of the actuating cylinder 8 is releasably connected to a positioning slide 10. The adjusting slide 10 in turn is in force-transmitting connection with the knife 6, wherein for the purpose of transmitting a restoring force to the knife 6, a coupling member 17 is provided which connects the knife 6 with the adjusting slide 10. The knife 6 is, as can be seen in particular in the illustration of FIG. 3, on a wear protection bracket 14 which is fastened with a screw 15 on the base body 12 of the stator 5. This wear protection angle 14 provides a blade support surface 16 on which the blade 6 is supported on the base body side.

To fix the position of the knife 6 relative to the base body 12 is a clamping jaw 11. This is einendseitig mounted in a the carriage 10 in the height direction superior holding web 19 and fixed by a clamping screw 18.

The clamping jaw 11 provides a contact surface 13 on the blade side ready. In the intended use case, the knife 6, as can be seen in particular the illustration of FIG. 3, held securely between the contact surface 13 of the clamping jaw 11 and the blade support surface 16 of the wear protection angle 14. Both the blade support surface 16 and the contact surface 13 are provided with a friction-reducing coating, for example a Teflon coating.

The mode of operation of the adjusting device 20 designed according to the invention results as follows: For a knife feed, the actuating cylinder 8 is to be charged with hydraulic fluid. A metering valve is preferably provided, which allows only so much hydraulic fluid to flow into the actuating cylinder that a step-by-step advancing movement in 1/10 mm increments is possible. The adjusting cylinder 8 acts on the coupling rod 9, which in turn actuates the adjusting carriage 10. The force transmitted to the adjusting carriage 10 is transmitted via the contact surface between the adjusting slide 10 and the knife 6 to the knife 6, so that the knife 6 is moved in the direction in the direction of the rotor 2. A return movement is generated in the same way via a restoring force provided by the adjusting cylinder 8, in which case the power is transmitted between the knife 6 and the adjusting slide 10 via the coupling member 17.

The force which can be generated by the adjusting cylinder 8, that is to say both feed force and restoring force, are matched to the surface properties of contact surface 13 and blade support surface 16 such that an adjustment movement of the blade 6 is possible without prior release of the clamping jaw 11. The operation of the actuating cylinder 8 is preferably carried out remotely via a control device. Such in the Fign. control device not shown, for example, each control cylinder 8 have two control buttons, a control button for the feed and a control button for the return movement. By simply pressing a button as an adjustment of the blade 6 to achieve an optimized gap between the blades 4 of the rotor 5 on the one hand and the knives 6 of the stator 5 on the other hand can be achieved.

According to one embodiment of the invention detection means may be provided which detects the current gap width between the stator knives and the rotor knives. Depending on the detected detection values, a fully automatic readjustment of the stator knives 6 can take place.

LIST OF REFERENCE NUMBERS

1 crusher

2 rotor

3 direction of rotation

4 knives (rotor)

5 stator

6 knives (stator)

7 perforated screen

8 actuating cylinders

9 coupling rod

10 positioning slides

11 clamping jaw

12 basic body

13 contact surface

14 wear protection angle

15 screw

16 knife support surface

17 coupling member

18 clamping screw

19 landing stage

20 adjusting device

gap

Claims

claims

1. Crusher, in particular coarse shredder, comprising a rotor (2) equipped with knives (4) and a stator (5) with a knife (5) translationally adjustable by means of an adjusting device (20), wherein the knife (5) by means of the adjusting device (5) 20) in the direction of the rotor (2) towards and away from the rotor (2) is adjustable, characterized in that the adjusting device (20) is a hydraulic or pneumatic actuating cylinder

(8).

2. Crusher according to claim 1, characterized in that the actuating cylinder (8) is a double-acting cylinder.

3. Crusher according to claim 1 or 2, characterized in that the actuating cylinder (8) by means of a control device is remotely controllable.

4. Crusher according to one of the preceding claims, characterized in that the knife (6) of the stator (5) between a knife support surface (16) and a contact surface (13) is held, wherein the blade support surface (16) and / or the contact surface ( 13) are provided with a coating / is.

5. Crusher according to claim 4, characterized in that the coating is a Teflon coating.

6. Crusher according to one of the preceding claims, characterized in that the adjusting device (20) has a positioning slide (10), which is coupled on the one hand with the knife (6) and on the other hand with the actuating cylinder (8) force-transmitting.

7. Crusher according to one of the preceding claims, characterized in that the adjusting cylinder (8) and the adjusting slide (10) by means of a coupling rod (9) and the adjusting slide (10) and the knife (6) by means of a coupling member (17) releasably with each other are connected.

8. stator with the stator features according to one of the preceding claims.