TH97577A - Mixers and kneaders for continuous compound formation and continuous compound formation methods by means of mixers and kneaders. - Google Patents

Abstract

The DC60 mixer and kneader (1) for continuous compounding consists of a helical shaft (3) rotating in a housing (2) and simultaneously rotating transversely in the axial direction. To optimize the machine in terms of material output per unit time, the helical shaft is designed to have the following geometric ratios: - Da/Di = 1.5 to 2.0, i.e., the ratio of the outer diameter of the helical shaft Da to the inner diameter of the helical shaft Di is 1.5 to 2.0; - Da/H = 4 to 6, i.e., the ratio of the outer diameter of the helical shaft Da to the stroke H is between 4 and 6; - T/H = 1.3 to 2.5, i.e., the ratio of the pitch T to the stroke H is between 1.3 and 2.5. A mixer and kneader (1) using such a helical shaft (3) in good condition will operate at speeds exceeding 500 rpm, or more specifically, exceeding 800 rpm. Figure 2. Mixer and kneader (1) for continuous compounding. It consists of a helical shaft (3) rotating in a housing (2) and simultaneously rotating transversely in the axial direction. To optimize the machine's efficiency in terms of material output per unit time, the helical shaft is designed to have the following geometric ratios: - Da/Di = 1.5 to 2.0, i.e., the ratio of the outer diameter of the helical shaft Da to the inner diameter of the helical shaft Di is 1.5 to 2.0 - Da/H = 4 to 6, i.e., the ratio of the outer diameter of the helical shaft Da to the stroke H is between 4 and 6 - T/H = 1.3 to 2.5, i.e., the ratio of the pitch T to the stroke H is between 1.3 and 2.5. A mixer and kneader (1) using such a helical shaft (3) in good form will operate at speeds exceeding 500 rpm, or more specifically, exceeding 800 rpm. Figure 2

Claims (11)

1. A mixer and kneader (1) for continuous compounding, which consists of a helical shaft (3) rotating in a housing (2) and simultaneously moving in a transverse axial direction, which is characterized by the ratio Da/Di of the outer diameter of the helical shaft to the inner diameter of the helical shaft being between 1.5 and 2.0, and the ratio Da/H of the outer diameter of the helical shaft Da to the stroke H being between 4 and 6, and the ratio T/H of the helix length T to the stroke H being between 1.3 and 2.5. 2. Mixer and kneader (1) as specified in claim 1, which is characterized by the helical shaft (3) operating at speeds exceeding 500 rpm, in particular exceeding 800 rpm. 3. Mixer and kneader (1) as specified in Claim 1, which is characterized by the Mixer and kneader (1) being composed of a number of interconnected areas that together form the production channel (6) in the direction of the output. 4. Mixer and kneader (1) as specified in claim 1, which is characterized that the production channel (6) shall consist of at least one inlet area (8), melting area (9), mixing/dispersing area (10) and discharge area (1). 5. The mixing and conveying machine (1) as specified in claims 3 or 4, which is characterized in such that the speed of the screw shaft (3) is adjusted along the length of the production channel (6) in such such that the time in the process in the machine is between 1 and 20 seconds. 6. Mixer and kneader (1) as specified in claim 3 or 4, which is characterized in such that the screw pitch of the screw paddle (4) is adjusted to the length of the production channel (6) in such such that the time in the process in the machine at the speed of the screw shaft (3) exceeds 500 rpm shall be 20 seconds at most. 7. Mixer and kneader (1) as specified in one of the preceding claims, which is characterized that the mixer and kneader (1) shall have a kneading shaft (5) attached to the frame (2) which shall extend into the production channel (6) in such a way that the main face of the spiral paddle (4) and/or the kneading shaft (5) shall have at least some of its shapes as freeform faces. 8. The mixer and kneader (1), as specified in claim 7, is characterized by the three-dimensional geometric shape of the main face of the spiral paddle (4) and/or of the kneader (5) having at least some of its shapes such that there is no natural starting point of any kind. 9. Method of continuous compound formation by means of a mixer and kneader (1) of the form specified in claim 1, which is characterized by the screw shaft operating at speeds exceeding 500 rpm, in particular exceeding 800 rpm. 10. The method described in claim 9 is characterized by the rotational speed of the screw shaft being adjusted in such a way that the average time in the machining process of the product in the machine (1) is between 1 and 20 seconds. 11. A method as specified in Claim 9 or 10, which is characterized by the ability to prepare plastic and/or puffed and flowing starch masses.