Abstract: The invention relates to an arrangement in a mechanical shaft seal. The arrangement comprises at least one sealing part rotating with a shaft in relation to a frame of the device and at least one sealing part fastened to the frame and/or to a separate frame part that is non-rotatable in relation thereto. The arrangement also comprises at least one additional part arranged to connect the frame and the sealing part that is non-rotatable in relation thereto and to prevent the rotation of the sealing part in relation to the frame. At least one set of the additional parts is memory metal elements.

Abstract: An arrangement in connection with a mechanical seal includes at least two sliding surfaces pressing against each other, which are arranged to seal a gap between a rotating and a non-rotating machining part, and mechanism for providing a sealing fluid flow cooling the sliding surfaces. To provide an optimal consumption of sealing fluid, a valve mechanism is arranged to the mechanism for providing the cooling sealing fluid flow, the valve mechanism being arranged to react to the temperature of the seal and to open and close the flow of sealing fluid according to the cooling need.

Abstract: The invention relates to a flowmeter for regulating and monitoring the flow of sealing fluid to be conducted to a seal of a rotating shaft, the meter including a sealing fluid metering channel, a sealing fluid inlet, and a connection towards the seal for regulating the flow of sealing fluid, a non-return valve for preventing the sealing fluid from flowing back to the flowmeter, a regulating and monitoring mechanism, whereby the sealing fluid flows through the opening, and a cleaning mechanism, which is movable by an actuator. The non-return valve is arranged as an extension of the metering channel at the meter outlet side end, coaxially with the metering channel, whereby the metering cone is in mechanical contact with the non-return valve, and thus it is also possible to clean the non-return valve with the cleaning mechanism.

Abstract: The invention relates to an arrangement in a mechanical shaft seal. The arrangement comprises at least one sealing part rotating with a shaft in relation to a frame of the device and at least one sealing part fastened to the frame and/or to a separate frame part that is non-rotatable in relation thereto. The arrangement also comprises at least one additional part arranged to connect the frame and the sealing part that is non-rotatable in relation thereto and to prevent the rotation of the sealing part in relation to the frame. At least one set of the additional parts is memory metal elements.

Abstract: The invention relates to an arrangement in connection with a central lubrication system. The arrangement includes a lubricant vessel, a pump unit, a control unit, pipe systems, a pressure monitor unit, at least one lubricant feeder provided with at least one piston which moves due to the influence of the pressure of a lubricant present in the pipe system/object to be lubricated, and a movement monitor unit to monitor the operation of the feeder. The movement monitor unit includes a sensor part mounted to a nipple manufactured from a weakly magnetable material. The nipple includes a permanent magnet to generate a magnetic field, and a sensor for detecting movement of the piston, and an electronics part which processes a signal received from the sensor and forwards this processed signal to the control unit.

Abstract: The invention relates to a flowmeter for regulating and monitoring the flow of sealing fluid to be conducted to a seal of a rotating shaft, the meter comprising a sealing fluid metering channel, a sealing fluid inlet, and a connection towards the seal for regulating the flow of sealing fluid, a non-return valve for preventing the sealing fluid from flowing back to the flowmeter, a regulating and monitoring mechanism), whereby the sealing fluid flows through the opening, and a cleaning means which is movable by means of actuating means. The non-return valve is arranged as an extension of the metering channel at the meter outlet side end, coaxially with the metering channel, whereby the metering cone is in mechanical contact with the non-return valve, and thus it is also possible to clean the non-return valve with the cleaning means).

Abstract: An arrangement in connection with a circulation lubrication system, comprising an intermediate tank, inlet channel means for feeding a lubricant into the intermediate tank, and outlet channel means for removing the lubricant, discharge means for emptying the intermediate tank, and measuring means arranged to start the discharge means when the level of the lubricant rises to an upper limit and to stop the discharge means when the level of the lubricant falls to a lower limit. The discharge means comprise a pneumatic valve, which is opened, when the level of the lubricant is at the upper limit, and to let pressurized air flow into the intermediate tank, whereby the pressurized air pushes the lubricant out of the intermediate tank through the outlet channel means, and prevents the flow of pressurized air into the intermediate tank when the level of the lubricant falls to the lower limit. A counter valve is arranged to prevent the flow of the lubricant out of the intermediate tank into the inlet channel means.

Abstract: An arrangement in a circulation lubrication system include a lubricating oil tank, pressure pipe lines for supplying oil to parts to be lubricated, return pipe lines for returning the oil from the parts to be lubricated to the oil tank, and a mechanism configured to pump oil into the pressure pipe lines and maintaining a desired state of lubrication. The mechanism configured to pump the oil into the pressure pipe lines may include a circulation lubrication pump and a suction duct through which the lubricating oil flows out of a lubricating oil tank, an underpressure tank coupled to the suction duct leading off from the lubricating oil tank, to the suction side of the circulation lubrication pump. The underpressure tank is a tank which allows the water contained in the oil to evaporate. To prevent cavitation of the circulation lubrication pump, the underpressure tank is placed substantially higher than the lubricating oil tank.

Abstract: An arrangement in a circulation lubrication system includes a lubricating oil tank, pressure pipe lines for supplying oil to parts that are to be lubricated, return pipe lines for returning the oil from the parts that are to be lubricated to the oil tank, and a mechanism for pumping oil into the pressure pipe lines and maintaining a desired state of lubrication. The lubricating oil tank has a rotationally symmetric structure; and a return duct, positioned at the center axis of the rotationally symmetric structure, is configured to extend below the surface of the oil in the lubricating oil tank. A return flow through the return duct passes through a dividing element to a mechanism configured to separate impurities from the oil.

Abstract: An arrangement in a circulation lubrication system, the arrangement including a control mechanism for controlling the flow of lubricating oil supplied to a part to be lubricated. The control mechanism includes two interfitting tubes with apertures in walls of both of the tubes. The apertures are arranged to provide a flow orifice for the lubricating oil, and the tubes are arranged to be rotatable around their common symmetry axis to the effect that an angular position of the tubes in relation to one another changes and the apertures in the tube walls shift in a circumferential direction of the tubes by their relation to one another, thereby a change in a size of the flow orifice is provided by the apertures. The rotating movements of the tubes are produced by different transmissions.

Abstract: A control apparatus for a liquid medium including a body portion provided with flow channels. The body portion includes an inlet for the medium, an outlet for the medium to an apparatus that the medium is conducted to, a return point for the medium returning from the apparatus, and a discharge point through which the medium is discharged from the control apparatus. A flow control valve and flow and pressure measuring devices are arranged after the medium inlet in the flow channels of the body portion. A pressure control valve for controlling the pressure in the flow channels between the flow control valve and the pressure control valve is arranged after the return point. For safety reasons, a pressure relief valve is arranged in the channel system of the body portion provided by the flow channels between the flow control valve and the pressure control valve, the relief valve being arranged to open as the pressure exceeds a certain allowed value.

Abstract: An arrangement in connection with a lubricant dispenser including a frame, which frame contains a metering cylinder and a metering piston moving therein as well as structure for conducting lubricant alternately to each side of the metering piston. The structure for conducting lubricant includes a spindle positioned in the cylinder and provided with passages remaining open during pressurization, the spindle being arranged to move in the cylinder so as to permit flow of lubricant in consequence of a movement of the spindle alternately either via a control valve to one side or the other of the metering piston or directly to one side or the other of the metering piston, depending on dispenser. To improve selection of material, the spindle is arranged to move only by rotating around its longitudinal symmetry axis. The rotary movement of the spindle is arranged to be provided by a separate turning part moving back and forth and rotating influenced by lubricant pressure and spring force.

Abstract: A method and an arrangement in a circulation lubrication including a lubricating oil tank, pressure pipe lines for supplying oil to parts to be lubricated, and return pipe lines for returning the oil from the parts to be lubricated to the oil tank. To remove air and dirt from the oil, the flow returning from the parts to be lubricated to the lubricant tank is divided into at least two superimposed flow portions, using a plate member, so that the oil flow portion containing air bubbles forms the upper flow portion and the flow portion containing water and heavy particles forms the lower flow portion.

Abstract: A method and an arrangement in a circulation lubrication system including a lubricating oil tank; pressure pipe lines for supplying oil to parts to be lubricated; return pipe lines for returning the oil from the parts to be lubricated to the oil tank. To eliminate problems caused by moisture, a blower is arranged to blow air into the oil tank, and at least one valve is positioned in the oil return pipe lines, the valve being arranged to allow the discharge of the air blown into the oil tank and the air with moisture and dirt flowing in the return pipe lines from the oil return pipe lines.

Abstract: A method for controlling a sweeper lubrication system which includes a lubricant container, a pump, and sootblower specific lubricator connected to a sootblower by pipelines for passing lubricant to each sootblower. For reliability, the operation of the pump is controlled by a timer and the sootblower specific lubricator of each sootblower is controlled on the basis of the operation or movement of the respective sootblower.

Abstract: A lubricant doser, assembly in which each doser includes a dosing cylinder and a dosing piston moving therein as well as conduits and other structure for leading lubricant alternately to both sides of the piston, including a stem in the cylinder, the stem both moving back and forth in the axial direction and turning about the longitudinal axis of symmetry thereof. The stem is provided with channels so that, by the movement of the stem the lubricant is allowed to flow to one side of either the control valve or the dosing piston depending on the doser, and accordingly by each next movement of the stem following a backward motion, to the other side of either the control valve or the dosing piston.