Device for continuously washing and recycling foundry waste sand

Abstract

The invention relates to a device for continuously washing and recycling foundry waste sand and belongs to the technical field of recycling, regenerating and reusing the foundry waste sand. The device for continuously washing and recycling the foundry waste sand comprises a soaking hopper, a sand water measuring device, a continuous type high-speed washing device, a centrifugal type dewaterer, an evaporator, a flotation machine, a continuous mud discharging machine and a bracket platform, wherein the continuous type high-speed washing device and the flotation machine are fixed at the upper part of the bracket platform; the continuous type high-speed washing device and the flotation machine are connected with each other through a water outlet pipe; the soaking hopper is connected to the upper end of the continuous type high-speed washing device; the sand water measuring device is arranged in a junction between the continuous type high-speed washing device and the soaking hopper; the centrifugal type dewaterer is arranged under a sand outlet of the continuous type high-speed washing device; the evaporator is arranged under the sand outlet of the centrifugal type dewaterer. The device for continuously washing and recycling foundry waste sand is convenient to use, reliable to operate and low in cost; the water for washing the waste sand can be recycled, and thus the resource is saved; the sand processed by the continuous type high-speed washing device is high in quality and high in regenerating and reusing rate.

Description

technical field [0001] The invention relates to a continuous water washing and reuse device for casting waste sand, which involves propulsion of the old sand of water glass, alkali phenolic and clay sand through spiral stirring to push the water elution membrane, and then through dehydration machine and evaporator to obtain regenerated sand. The utility model relates to a set of casting sand continuous washing and recycling equipment for turning sewage into recyclable reclaimed water by a flotation method sewage treatment system, which belongs to the technical field of resource recycling and utilization of old foundry sand. Background technique [0002] Sand casting is the basic process in foundry production. About 90% of the castings in the foundry industry are produced by sand casting. To manufacture one ton of qualified castings, about one ton of sand mold is needed. The basic raw materials for making sand molds are foundry sand and sand binder, and the most commonly use...

AI Technical Summary

Problems solved by technology

At present, a kind of wet stripping and regeneration of waste casting sand adopts the pit-type soaking tank structure, which has the disadvantages of large area, low productivity, and large investment in civil construction structures; another vertical mixing drum structure has equipment Occupies a lot of space, consumes a lot of kinetic energy, etc.

Traditional thermal regeneration and mechanical regeneration have certain limitations to some extent, and cannot meet the technological requirements of the foundry process for recycled sand

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