NL1037132C2 - BREAKER MACHINE APPLIED TO THE DRIVE LINE OF A VERTICAL CUTTING AND MIXING DEVICE. - Google Patents

Description

Shear pin machine applied to the drive line of a vertical cutting and mixing device

The present invention relates to a shear pin machine applied to the drive line of a vertical cutting and mixing device, in particular for stationary biogas plants. The drive line of a stationary biogas installation consists of an electric motor with a reduction gearbox, a right-angle gearbox with a cutting and mixing auger above it. The shear pin machine applied to the drive line of a stationary biogas installation serves to protect the drive line and the cutting and mixing auger. A biogas process must be continuous and trouble-free because the installation must be continuously supplemented with product during a process, so once started up it must be prevented that the process is interrupted for a longer period of time.

If the installation is overloaded or freezes, the break pin breaker interrupts the drive to protect the components in the drive line. The interruption 20 in the drive is noticed by sensors connected to the control of the electric motor, this control causes the motor to stop so that the break pin machine can repack. The motor rotates the auger back as far as necessary to release the cutting and mixing auger, then the motor starts again and the shear pin machine also comes back into operation. In this way the shear pin machine restores the protection itself.

Various types of shear bolt protection methods are known, but with known shear pin automatics, in the case of problems such as, for example, overload, the drive line 30 is interrupted and cannot repair itself. To remedy the interruption, a technician must restore the protection in the drive train.

1037132 i 2

The invention will now be explained with reference to the accompanying drawings.

FIG. 1 shows an isometric view: of the vertical cutting and mixing device of the stationary biogas plant. FIG. 2 shows a side view of the drive line of the biogas plant

The model shown in Fig. 1 shows an isometric view of the vertical cutting and mixing device of the stationary biogas installation with one or more cutting and mixing jacks (2) driven by an electric drive (3) in the mixing tank (1) .

The model shown in Fig. 2 shows a side view of the drive line of the biogas installation. The electric motor (1) serves as a power source in the drive line, the high speed of the electric motor (1) is reduced in the reduction box (2). The PTO shaft (3) connects the electric motor (1) with reduction gearbox (2) to the right-angle gearbox (5) between which the break pin automaton (4) is mounted. This shear pin machine (4) protects the right-angle gearbox (5) on which the cutting and mixing screw (6) is mounted. If the cutting and mixing auger (6) gets too much material to process, the right-angle reduction gearbox (5) is heavily loaded. In order not to cause any damage to the right-angle reduction gearbox (5) in the event of extreme loads, the break pin machine (4) interrupts the drive line. Sensor 1 (7) and sensor 2 (8) detect the interruption. When the cutting and mixing auger (6) no longer rotates, sensor 2 (8) no longer transmits a signal to the control (9). The control 30 (9) stops the electric motor (1), at the same time sensor 2 (8) detects when the break pin machine (4) repackages. The control (9) allows the electric motor (1) to turn back the cutting and mixing auger (6) as far as necessary to release the auger (6). The control (9) restarts the electric motor (1) and 3 restores the break pin automaton (4) to the safety device and returns to operation.

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Claims (2)

1. Shear pin machine applied to the drive line of a vertical cutting and mixing device of a biogas plant 5 to protect the drive line and the cutting and mixing auger. 2. Break pin machine according to claim 1, characterized in that, in combination with the control, it can pick up itself and restore the protection during a failure in the mixing process without the intervention of a fitter. 15 20 25 30 1 0 3 7 1 3 2;