Spade heat-treatment medium recovering device and method for recovering medium using the device

Abstract

The invention relates to a spade heat-treatment medium recovery device. The device comprises a conveying chain, a sprinkler device, a salt bath groove, a bleaching chamber, an immersing and diluting tank, a fresh water spray chamber and a three-level cooling pool. The salt bath groove is a heat-treatment iso-quenching bath provided with nitrate; the bleaching chamber for washing and diluting work pieces, the immersing and diluting tank and the fresh water spray chamber are arranged in a triangular shape, wherein the bottom of the bleaching chamber and the upper part of the immersing and diluting tank are provided with osculums of tail water in turn, and a washing recovery pipeline is communicated with an one-level recovering pool; three recovery pools constitute the three-level cooling pool which is arranged under the ground. The recovery steps are as follows: hoisting the work pieces on the conveying chain and entering the work pieces to the salt bath groove provided with the nitrate to carry out heat-treatment iso-quenching; then carrying out three-level washing and leading the fresh water tail water to enter the one-level recovery pool to be naturally cooled; and at last, recovering the medium in the three-level recovery pool. The device can use the residual heat of a heating furnace, and has the advantages of convenient operation, saved energy, simple recovery process, closed circulated process and no pollution.

Description

technical field [0001] The invention relates to a device for cleaning and recovering heat treatment medium and a method for cleaning and recovering heat treatment medium using the device, in particular to a device for recovering shovel heat treatment medium and a method for recovering medium with the device. Background technique [0002] The media usually used for heat treatment include water, oil, salt, etc. When the surface of the workpiece to be treated needs to be coated with paint, plastic powder, etc., it is necessary to clean the residual heat treatment medium on the surface of the workpiece. Among them, most of the heat treatment wastewater containing salt medium contains nitrite, and direct discharge will cause serious pollution to the environment. Therefore, when cleaning the salt medium, in order to ensure the quality of the workpiece surface, the flowing water spraying process is often used. During the washing process, a large amount of water resources need to be...

AI Technical Summary

Problems solved by technology

The disadvantages of this recycling method are:

[0003] ① Pollution caused by spillage of washing tail water during transportation;

[0004] ②The drying process is limited by natural conditions, and it cannot be dried normally in rainy or snowy days, especially when heavy rain occurs, it is easy to cause the drying pool to overflow and cause the second environmental pollution;

[0005] ③ Special personnel are required to be responsible for transportation, drying, concentration measurement, etc., and the recycling cost is relatively high

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