Tube-type heat exchange fast dewatering equipment for precision casting modeling wax

Abstract

The invention belongs to the field of precision casting and discloses tube-type heat exchange fast dewatering equipment for precision casting modeling wax. The equipment comprises a wax storage box, an equipment support, a heat exchanger and a liquid wax distribution structure, the heat exchanger is of a steam heat exchange structure composed of a plurality of vertical heat exchange tubes, a steam inlet manifold and a steam exhaust manifold, the cone-tube-shaped liquid wax distribution structure is sleeved at the upper ends of the heat exchange tubes, a plurality of holes which are used for sleeving the heat exchange tubes and in clearance fit with the same are arranged on the conical surface of a cone tube, and a radial clearance adjusting structure is arranged between each heat exchange tube and a bottom plate hole of a liquid wax storage box and used for adjusting clearances, passing by liquid wax, on the outer wall of each heat exchange tube. When the equipment is used, water-containing modeling liquid wax flows down along the outer walls of the heat exchange tubes via a distributer, heat exchange can be sufficient as the heat exchange tubes are long, water in the liquid wax is vaporized and evaporated fast, and accordingly dewatering speed and dewatering efficiency are high; and steam temperature is controlled to be 110 DEG C-130 DEG C during dewatering, modeling wax quality is guaranteed, and production safety is also guaranteed.

Description

technical field [0001] The invention relates to a paraffin wax dehydration equipment, in particular to a precision casting model wax dehydration equipment. Background technique [0002] When the model wax of precision casting is recycled, water removal treatment is required. At present, the model wax water removal equipment in the prior art is basically a stirring water removal bucket. Heat the heat conduction oil to a temperature above the boiling point of water, and the wax liquid in the barrel contacts with the interlayer to exchange heat, so that the water in the wax liquid vaporizes and evaporates. During this process, the agitator stirs the wax liquid in the barrel to make the wax liquid and the interlayer fully Contact to increase the heat transfer effect. This water removal equipment can remove the water in the model wax, but there are disadvantages in water removal with this equipment: the water removal treatment time is long and the efficiency is low; due to the l...

AI Technical Summary

Problems solved by technology

This water removal equipment can remove the water in the model wax, but there are disadvantages in water removal with this equipment: the water removal treatment time is long and the efficiency is low; due to the long water removal treatment time, the electric heater needs to be frequently shut down during the treatment process Electricity and start-up consume a lot of electricity and consume a lot of energy; generally, the oil temperature of the heat transfer oil is controlled between 130°C and 150°C. After a long time of water removal treatment, the model wax is easy to carbonize and deteriorate; if the oil temperature of the heat transfer oil is 150°C Above, it may cause the model wax to burn, resulting in safety accidents

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