Abstract: The invention shows and describes a vibration mill for at least two grinding beakers performing vibrations in the horizontal position, with at least one multi-part pendulum drive, wherein the pendulum drive has at least one eccentric shaft mounted to rotate about a vertical eccentric axis, and at least two rockers each mounted so as to be capable of vibrating about a vertical vibration axis and connected by means of couplers to the eccentric shaft, said rockers holding the grinding beakers. The pendulum drive further has a motor unit coupled to the eccentric shaft as a drive for the eccentric shaft and optionally further components, wherein a rotary movement of the eccentric shaft via the couplers can be converted into a vibrating movement of the rockers. According to the invention, the centre of gravity of the pendulum drive in a horizontal centre of gravity plane is substantially equidistant from both vibration axes.

Abstract: A comminution device for laboratory operation is described. More specifically, a laboratory mill, particularly a centrifugal mill, is provided that includes a milling tool arranged in a milling chamber, a housing assembly, and a milling material channel running through the housing assembly. The milling material channel opens into the milling chamber and is configured to supply, for supplying milling material to the milling chamber or to discharge milled material from the milling chamber. The milling material channel may be open to the environment and/or can be opened for successively supplying milling material to the milling chamber during the milling operation. At least one system for passively reducing noise emissions is provided and situated in the region of the milling material channel.

Abstract: The invention shows and describes a vibration mill for at least two grinding beakers performing vibrations in the horizontal position, with at least one multi-part pendulum drive, wherein the pendulum drive has at least one eccentric shaft mounted to rotate about a vertical eccentric axis, and at least two rockers each mounted so as to be capable of vibrating about a vertical vibration axis and connected by means of couplers to the eccentric shaft, said rockers holding the grinding beakers. The pendulum drive further has a motor unit coupled to the eccentric shaft as a drive for the eccentric shaft and optionally further components, wherein a rotary movement of the eccentric shaft via the couplers can be converted into a vibrating movement of the rockers. According to the invention, the centre of gravity of the pendulum drive in a horizontal centre of gravity plane is substantially equidistant from both vibration axes.

Abstract: The invention relates to a laboratory mill comprising at least one counter-vibration device (27) which has at least one control unit (29a) for providing a counter-vibration signal (29b) and at least one controllable vibration generation unit (29) for converting the counter-vibration signal (29b) into counter-vibrations (30), wherein the vibration-generation unit (29) counteracts a device- and/or housing part (31) of the laboratory mill (1) and the counter-vibrations (30) lead to an active reduction in the vibrations of the device- and/or housing part (31) and/or an at least partial suppression of noise-inducing vibrations of the device- and/or housing part (31), by means of destructive interference.

Abstract: A comminution device (2) for laboratory operation is presented and described, particularly a laboratory mill, especially particularly a centrifugal mill, comprising a milling tool arranged in a milling chamber (3), a housing assembly and a milling material channel (12) running through the housing assembly and opening into the milling chamber (3), for supplying milling material to the milling chamber (3) and/or for discharging milled material from the milling chamber (3), particularly wherein the milling material channel (12) is open to the environment and/or can be opened, especially particularly for successively supplying a milling material to the milling chamber (3) during the milling operation. According to the invention, at least one system for passively reducing noise emissions is situated in the region of the milling material channel (12).

Abstract: The invention relates to a laboratory mill comprising at least one counter-vibration device (27) which has at least one control unit (29a) for providing a counter-vibration signal (29b) and at least one controllable vibration generation unit (29) for converting the counter-vibration signal (29b) into counter-vibrations (30), wherein the vibration-generation unit (29) counteracts a device- and/or housing part (31) of the laboratory mill (1) and the counter-vibrations (30) lead to an active reduction in the vibrations of the device- and/or housing part (31) and/or an at least partial suppression of noise-inducing vibrations of the device- and/or housing part (31), by means of destructive interference.

Abstract: A ball mill is provided comprising at least two milling cup retainers arranged on a machine base plate, each milling cup retainer being designed for a milling cup clamped in the milling cup retainer in a lying position, each milling cup having end-face milling cup ends and a filling of balls as milling bodies and comprising a drive that causes an out-of-phase rotational motion between the milling cup retainers.

Abstract: Rotor mill for laboratory operation, comprising a rotor coupled to a drive motor as a milling tool, a ring sieve (28) surrounding the milling chamber (25) of the rotor mill (18) and an annular connecting container (26) for the ground milling material, which collecting container is arranged on the outer circumference of the ring sieve (28) and can be inserted into the housing of the rotor mill and is provided with a cover (29), the milling unit comprising the rotor (18), the ring sieve (28) and the collecting container (26) being closable by a housing cover (15) having a milling material inlet opening (17), is characterized in that at least one component of the milling unit and/or of the rotor mill that directly or indirectly surrounds the milling chamber (25) of the rotor (18) is designed for conducting and/or accommodating a cooling medium and/or for cooling by means of a gaseous cooling fluid flowing around on the outside, said gaseous cooling fluid having been introduced into the housing.

Abstract: Ball mill (10) comprising at least two milling cup retainers (13) arranged on a machine base plate (12), each milling cup retainer being designed for a milling cup (23) clamped in the milling cup retainer in a lying position, each milling cup having end-face milling cup ends and a filling of balls as milling bodies and comprising a drive that causes a rotational motion of the milling cup retainers (13) characterized in that each of the milling cup retainers (13) arranged in pairs is put in restraint-guided circular motion, oriented parallel to the plane of the machine base plate (12) by means of the drive via two eccentric shafts (25) connected to the milling cup retainers (13) on faces opposite to each other in relation to an axis of symmetry of the milling cup (23), a counterweight (28) being arranged on each of the two eccentric shafts (25) associated with a respective milling cup retainer (13) and passing through the machine base plate (12), below the machine base plate, and on the face of the eccentric s

Abstract: The invention relates to a fiber-optic temperature sensor which is provided with a preferably spherical microparticle with a diameter in the range of from 5 to 100 micrometers as the optical resonator. Said microparticle is linked with optical waveguides for coupling light in or out. A laser diode (1) incites optical resonances in the microparticle, the wavelengths of these resonances depending on the diameter of the microparticle. Due to the thermal expansion of the microparticle, said diameter in turn depends on the temperature. The temperature sensor is calibrated so that the resonance wavelengths can be correlated with corresponding temperature values.