摘要:
A method for producing a thermoplastic elastomer composition comprising using a twin screw kneader to melt-knead a thermoplastic resin and an elastomer; the twin screw kneader having at least two raw material inlets including a first raw material inlet and a second raw material inlet provided at a position separated by 15D to 38D on a downstream side from the first raw material inlet, where D is a cylinder inside diameter of the twin screw kneader; the elastomer being fed in a divided manner from the first and second raw material inlets; a proportion of the elastomer fed from the second raw material inlet being from 10 to 60 vol% of a total amount of the elastomer; and the elastomer being melt-kneaded in a kneading zone having a length of from 0.5D to 20D in a cylinder axis direction of the twin screw kneader, at least one kneading zone being respectively provided between the first and second raw material inlets and on a downstream side from the second raw material inlet.
摘要:
A tank apparatus and a system for dispersing by circulating a mixture that prevents powdery additives from adhering to an inner face of a tank from scattering in the tank, from drifting on the surface of a liquid, and from agglutinating, are presented. The tank apparatus that stores a raw material that is slurry or liquid and supplies powdery additives to the raw material to mix them with the raw material comprises a tank for storing the raw material and a screw-type device for supplying powdery additives that is integral with the tank and supplies the powdery additives to the raw material in the tank, wherein a tip of a part for supplying powdery additives of the screw-type device for supplying powdery additives is inserted into the mixture in the tank.
摘要:
A method of reclamation of the used foundry sand, especially with an inorganic geopolymer binder system, wherein the reclamation occurs in batches so that friction elements located on two shafts rotate inside each dose of the used sand, wherein the reclamation is done by rotation of the impact bars (3) in the used sand moving in the fluidized bed, where the volume ratio of impact bars (3) to the volume of the batch of the used sand is in the range from 0.03 to 0.10, wherein the air passes through the layer of the sand with the velocity which ranges from 1,5 to 4 times the threshold velocity of fluidization, wherein for quartz sands the fluidization threshold speed is equal to 0,17 m/s. An equipment for performing the method of reclamation of the used foundry sand according to the claims 1 to 3, comprising a container casing (1), in which shafts (2) provided with impact bars (3) are arranged in a certain distance between them, wherein the container casing (1) has in its ground plan section shape of an oval, wherein spaced from its bottom there is a permeable bottom (6) of the fluidized bed attached on a carrier (5), and further, the container casing (1) is in its upper part provided with a dosing opening (8), wherein in its lower part has the container casing (1) the unloading opening (9) and the inside of the container casing (1) is provided with a wear-resistant lining (11), furthermore, in the container casing (1) there is arranged a pair of vertically oriented shafts (2) on which cylindrical impact bars (3) are attached.
摘要:
A kneading device uniformly kneads materials to be kneaded while efficiently and quickly kneading the materials to be kneaded. A kneading device includes a kneading chamber accommodating materials to be kneaded and a pair of rotors (10) . The pair of rotors (10) is rotated in the kneading chamber and kneads the materials to be kneaded by a plurality of kneading blades (20). The plurality of kneading blades (20) in each rotor (10) is composed only of inclined blades inclined to the same direction in a rotational direction (R) of the rotor (10) with respect to an axial direction (X) of the rotor (10) when the rotor (10) is developed into a planar state. The rotor (10) has bent blades (30, 40) which are bent at bent portions (31, 41) to change tilt angles (E, F) with respect to the axial direction (X) of the rotor (10) in the plurality of kneading blades (20).
摘要:
Die Erfindung betrifft eine zweispindelige Schraubenspindelpumpe (10) in einflutiger Bauweise mit einem Pumpengehäuse (11), das einen Pumpenabschnitt (12), einen Lagerabschnitt (16) und einen Getriebeabschnitt (17) mit einem Getrieberaum (32) aufweist, wobei der Lagerabschnitt (16) und der Pumpenabschnitt (12) getrennt voneinander ausgeführt sind, mit einem Fördergehäuseteil (13) als Bestandteil des Pumpenabschnitts (12), in dem zwei auf Wellen (22, 23) angeordnete Förderschrauben (24, 25) mit Flanken (42, 43) vorgesehen sind, wobei die Wellen (22, 23) im Lagerabschnitt (26) gelagert sind (Außenlagerung) und sich in den Getriebeabschnitt (17) erstrecken. Aufgabe der Erfindung ist es, die vorgenannte Pumpe dahingehend zu verbessern, dass hochviskose, nicht fließende Medien gefördert werden können. Gelöst wird die Aufgabe dadurch, dass das Pumpengehäuse (11) einen Extruderabschnitt (14) aufweist, der mit dem Pumpenabschnitt (12) verbunden ist, dass ein Extrudergehäuseteil (15) vorgesehen ist, durch den sich die Wellen (22, 23) erstrecken, und dass auf den Wellen (22, 23) Extruderschrauben (27, 28) mit Flanken (50, 51) vorgesehen sind.
摘要:
Provided is a method of manufacturing a resin kneaded product in which an extrusion amount of a material can be increased and by which vent-up at an opening can be suppressed while spouting out of an unmelted material at the opening can be suppressed. A method of manufacturing a resin kneaded product includes kneading a material containing an additive (a) and a thermoplastic resin (b) using a twin screw extruder, in which the twin screw extruder is equipped with a supply port, a discharge port, an opening present between the supply port and the discharge port, a kneading section A present between the supply port and the opening, and a kneading section B present between the opening and the discharge port, a ratio L1 (La/D) of a length La of the kneading section A to a screw diameter D satisfies L1 ≥ 3, and the material is kneaded in the kneading section A without being completely filled and the material is also kneaded in the kneading section B.
摘要:
Ein Verfahren zur Behandlung von Ballastwasser mit wässriger Acroleinlösung unter Verwendung von Acroleinacetal (AC) und Katalysatorsäure (HX) die in einem Reaktionsgefäß gemischt und zur Reaktion gebracht werden ist dadurch gekennzeichnet, dass das Acroleinacetal (AC), die Katalysatorsäure (HX) mit Hydrolysewasser (W) über separate außen an dem Reaktorgefäß angebrachte Zulauföffnungen in das Reaktorgefäß zur Erzeugung einer wässrigen Acroleinlösung zugegeben und durch ein Intensivrührwerk verrührt werden, dass das Ballastwasser mittels einer Druckerhöhungspumpe (VP) durch eine Wasserstrahlpumpe (Z) gepumpt wird, und dass die wässrige Acroleinlösung von dem Reaktorgefäß über eine Verbindungsleitung zwischen dem Reaktionsgefäß und der Unterdruckzone der Wasserstrahlpumpe in die Unterdruckzone der Wasserstrahlpumpe hydraulisch über ein Stellventil (SV) eingeleitet wird.