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In-line measuring-controlling device for water content in mixing moulding sand and its operating method

A measurement and control device, moisture technology, applied in the field of casting sand

Inactive Publication Date: 2003-01-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned shortcomings of existing molding sand moisture measuring devices, and provide an online moisture measurement and control device for molding sand mixing process and its use method. range; at the same time, the test speed is required to be fast, which can meet the requirements of online moisture measurement and control in the molding sand mixing process

Method used

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  • In-line measuring-controlling device for water content in mixing moulding sand and its operating method
  • In-line measuring-controlling device for water content in mixing moulding sand and its operating method
  • In-line measuring-controlling device for water content in mixing moulding sand and its operating method

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Embodiment Construction

[0019] see figure 1 , figure 1 It is a structural block diagram of Embodiment 1 of the moisture on-line measurement and control device for the molding sand mixing process of the present invention. With a special structure, an external bracket can be used to fix the moisture sensor 3 in the sand mixer 1. After the sand mixer 1 is running, a relative movement is formed between the moisture sensor 3 and the chassis of the sand mixer, and the lead wire of the moisture sensor 3 There will be no problem of entanglement. Depend on figure 1 Visible, the present invention has the simplest structure, is made of electromagnetic valve 6 and water flowmeter 8, computer 5 installed on the pipeline 9 of moisture sensor 3, water source 7 in sand mixer 1, and said computer 5 also can be used single-chip microcomputer to replace.

[0020] figure 2 It is a structural block diagram of Embodiment 2 of the present invention, which is designed to solve the problem that the installation of the ...

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Abstract

An equipment for on line measuring and controlling the water content of moulding sand in its mixing procedure is composed of a water sensor inserted in the sand being mixed, an electromagnetic valve and a water flowmeter, which are installed to water tube, and a computer. Its method includes such steps as detecting the water content information by sensor, receiving it by computer, comparing it with the predefined water content to determine the needed water, and controlling electromagnetic valve and flowmeter to adding it to sand.

Description

Technical field: [0001] The invention relates to molding sand for casting, in particular to an on-line moisture measurement and control device for the molding sand mixing process and a method for using the same. Background technique: [0002] Clay sand green casting is the most commonly used casting method at home and abroad. In green casting, the performance of molding sand has a significant impact on casting quality, and molding sand moisture is one of the most important and sensitive parameters affecting casting process performance. Accurate and rapid measurement and control of molding sand moisture is the key to improving casting quality and reducing An important means of casting rejection rate. Existing representative devices for measuring the moisture content of molding sand use capacitive or resistive type sand moisture sensors to control the moisture content of the molding sand by measuring the moisture content of the old sand in the quantitative sand bucket. This d...

Claims

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Application Information

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IPC IPC(8): G01N27/04G01N27/22
Inventor 朱世根胡菊芳陈少梅傅增明
Owner DONGHUA UNIV
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