초록 ▼

A water flow guide stationarily mounted in the water box of an underwater pelletizer to selectively direct the pressurized water flowing through the water box in order to more efficiently cool and rigidify the extruded polymer strands and enable the rotary cutter blades to more effectively shear the

A water flow guide stationarily mounted in the water box of an underwater pelletizer to selectively direct the pressurized water flowing through the water box in order to more efficiently cool and rigidify the extruded polymer strands and enable the rotary cutter blades to more effectively shear the strands into pellets and to convey the sheared pellets away from the die face and rotary cutter blades of the pelletizer to the water box outlet. The water flow guide provides an accurately guided pressurized water flow which enables pelletization of polymers of various diameters and a wide range of specific gravity and rheological characteristics.

대표청구항 ▼

A water flow guide stationarily mounted in the water box of an underwater pelletizer to selectively direct the pressurized water flowing through the water box in order to more efficiently cool and rigidify the extruded polymer strands and enable the rotary cutter blades to more effectively shear the

A water flow guide stationarily mounted in the water box of an underwater pelletizer to selectively direct the pressurized water flowing through the water box in order to more efficiently cool and rigidify the extruded polymer strands and enable the rotary cutter blades to more effectively shear the strands into pellets and to convey the sheared pellets away from the die face and rotary cutter blades of the pelletizer to the water box outlet. The water flow guide provides an accurately guided pressurized water flow which enables pelletization of polymers of various diameters and a wide range of specific gravity and rheological characteristics. racterized in that the filter (1) has at least one cavity (2 and/or 3) which is designed for simultaneous filtering of radio signals of at least three different modes (A, B and C and/or D, E, and F) and the same frequency, and that the compensating means (13 and/or 16) is provided in said cavity (2 and/or 3) for compensating deviations in frequency by simultaneously affecting the radio signals of the at least three different modes (A, B and C and/or D, E, and F), and characterized in that the compensating means (13 and/or 16) comprises a member (18) which is movable in the cavity (2 and/or 3) depending on temperature changes in the filter (1) and which is provided to affect the radio signals of the three different modes (A, H and C and/or D, E and F), and characterized in that at least one temperature sensor (19) is provided to sense changes in temperature in the filter (1), and that at least one setting device (20) is provided to move said member (18) of the compensating means (13 and/or 16) in the cavity (2 and/or 3) depending on temperature changes in the filter (1) sensed by the temperature sensor (19). 17. Device according to claim 16, characterized in that the setting device (20) comprises a container (21) with a liquid (22) which is expanding or contracting depending on temperature changes in the filter (1) sensed by the temperature sensor (19), that a plunger (23) is provided for displacement in dependence of the expansion or contraction of the liquid (22), and that the plunger (23) cooperates with a rope (24) in order to displace, during its movement, said member (18) in the cavity (2 and/or 3) along a bracket (17) forming part of the compensating means (13 and/or 16). 18. Device at filters for filtering unwanted signals from radio transmitters and/or for use during combination of radio transmitters, wherein said filter (1) has at least one cavity (2 and/or 3) for filtering radio signals, and wherein at least one compensating means (13 and/or 16) is provided to compensate for deviatio