Mixed type foundry waste sand scrubbing and recovering equipment

Abstract

The invention discloses mixed type foundry waste and scrubbing and recovering equipment, which includes a sand-water separating unit, a centrifugal separator, a sand-water buffering and concentrating tank and a multi-cylinder combined scrubber, and is characterized in that multiple separators are arranged on the periphery of a cylinder body of the sand-water separating unit; the middle part of the cylinder body is divided by a partition board into two parts, namely a water outgoing tank and a water ingoing tank; two cones at different angles are arranged at the bottom of a tank body of the sand-water buffering and concentrating tank; a pressure reduction inverted cone is arranged between the two cones; a high pressure water pipe is arranged above the pressure reduction inverted cone; multiple scrubbing cylinders which are connected in series are arranged on the multi-cylinder combined scrubber; every 2 to 3 scrubbing cylinders share one motor; each scrubbing cylinder is composed of an inner cylinder and an outer cylinder. The combined foundry waste and scrubbing and recovering equipment occupies a small area, is compact in structure, has high waste sand recovery rate and waste sand regeneration performance, and is long in service life and simple and convenient to maintain.

Description

technical field [0001] The invention relates to a mixed-type foundry waste sand scrubbing recovery equipment, which is a kind of washing equipment used in the waste sand recovery process of the foundry industry. Background technique [0002] Since 2000, the average growth rate of my country's foundry industry has been above 10%, becoming the world's largest producer of castings. In 2011, my country's casting production has exceeded 40 million tons, ranking first in the world. 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 used foundry sand is siliceous sand. my country's foundry industry needs more than 40 million tons of siliceous sand every year. A large amount of siliceous sand comes from nature, ...

AI Technical Summary

Problems solved by technology

The current sand-water separators on the market have poor separation effect, and the equipment is prone to blockage and failure; the sedimentation and concentration equipment has a slow concentration of fine sand, and the effect is not good, and the flow rate of fine sand fluctuates greatly, which is easy to block and difficult to control reliably; The structure is a giant single-cylinder structure, and it is mostly used for dry friction. The equipment wears very seriously. The scrubbing process of waste sand produces a lot of dust, the yield of recycled products is low, the energy consumption is high, and the scrubbing effect is not good.

Due to the unsatisfactory performance of the three types of equipment used in the waste sand regeneration process, the waste sand regeneration process is carried out intermittently, and the waste sand regeneration output is small, which cannot meet the needs of foundry companies.

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