Underwater pelleting device of machine unit for compounding, squeezing and prilling

Abstract

The invention relates to a mixing extrusion pelleting machine set. An underwater pelleting device of the mixing extrusion pelleting machine set is provided with a machine head template and a pelleting cutter head, wherein the machine head template is arranged on the wall surface of a hot water chamber and sealed, the cutter head is arranged in the hot water chamber through the end of a cutter shaft, a driving motor is in driving connection with the cutter shaft through a coupling, the cutter shaft is arranged in a bearing box and driven by a piston rod of a cylinder, the bearing box is arranged on a trolley bracket, trolley wheels are placed on a guide rail, and the cylinder drives a trolley to move along the guide rail so as to combine and separate the pelleting cutter head and the temperate. The mixing extrusion pelleting machine set rotates at high speed close to a discharge template in the water chamber filled with deionized water during operation, so as to finish pelleting. Cut particles are conveyed to a downstream device along with cooling water. The machine set is safe, is favorable for prolonging service life of the template and a pelleting cutter, and controls a system with simple and easy operation.

Description

1. Technical field [0001] The invention relates to a mixing extrusion granulation unit, especially a granulation device thereof. 2. Background technology [0002] The mixing extrusion granulation unit is one of the most important equipment for ethylene engineering in the petrochemical industry. The pelletizing device is the key component of the whole unit. The pelletizing methods usually include eccentric hot pelletizing (that is, the discharge port of the machine head is in direct contact with the blade, but there is no cooling medium, and the knife axis deviates from the center line of the die head), cold-stretched pelletizing (the discharge of the machine head is strip-shaped, directly Enter the cooling water tank to cool, and then enter the pelletizing device for pelletizing), water ring pelletizing (the outlet of the die plate directly contacts the blade, and is thrown into the water ring belt by centrifugal force, and then the particles are taken away by circulating w...

AI Technical Summary

Problems solved by technology

The particles cut out by these methods are short cylindrical, which can only achieve granulation with a small output. When the output exceeds 1000kg / h, it will not meet the requirements.

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