Automatic control method and automatic control device of water valve of surface treatment rinsing bath

An automatic control device and surface treatment technology, applied in the direction of non-electric variable control, multi-fluid ratio control, ratio control, etc., can solve problems such as unsatisfactory water-saving effects, and achieve significant water-saving and environmental protection significance and social benefits. The effect of the economic effect

Inactive Publication Date: 2011-07-27
ZTE CORP SHENZHEN CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to reduce waste, some enterprises have also adopted the method of linking the closing and opening of the water valve with the p

Method used

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  • Automatic control method and automatic control device of water valve of surface treatment rinsing bath
  • Automatic control method and automatic control device of water valve of surface treatment rinsing bath
  • Automatic control method and automatic control device of water valve of surface treatment rinsing bath

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Example Embodiment

[0016] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0017] Such as figure 1 As shown, the automatic control device for the water valve of the surface treatment washing tank in the first embodiment adopts a dual-probe PH controller of model OPM223. The two probes are respectively placed in the appropriate positions in the washing tank after degreasing and the washing tank after phosphating. Connecting with the PH controller will detect the PH value of the washing tank. The PH controller will be connected with the electronically controlled water valve switch to output a control signal to control the water valve switch when the measured PH value reaches the set value.

[0018] The electronically controlled water valve switch includes intermediate relays KA1 and KA2 and water valves YV1 and YV2 with a 24V DC voltage. The 220V AC external to the water valve is rectified to 24V DC to ensure that the lines from...

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PUM

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Abstract

The invention discloses an automatic control method and an automatic control device of a water valve of a surface treatment rinsing bath. The method comprises the following steps: a pH detecting probe is arranged in the rinsing bath and transmits detected pH value signal data in a rinsing bath back to a pH controller; the pH controller compares the detected pH value signal data in the rinsing bath with a determined value, and when the detected pH value signal data in the rinsing bath reaches the determined value, the pH controller outputs a control signal to an electric control water valve switch connected with the pH controller so as to control the opening and the closing of the water valve. The automatic control device comprises the pH detecting probe, the pH controller and the electriccontrol water valve switch, wherein the pH detecting probe is arranged in the rinsing bath and connected with the pH controller to detect the pH value in the rinsing bath; the pH controller is connected with the electric control water valve switch so as to output the control signal to control the opening and the closing of the water valve when the detected pH value reaches the determined value.

Description

technical field [0001] The invention relates to an environment-friendly and water-saving method and device, in particular to an automatic control method and device for a water valve applied to a surface treatment washing tank. Background technique [0002] At present, in all kinds of surface treatment processes for metal materials and other workpieces, water washing after degreasing (oil) and water washing after phosphating (water washing includes water rinsing or spraying) are involved. Basically, the water valve is in a normally open state. . Although generally in production control, there is a control requirement for the water valve, but because there is no specific quantification or data control, in order to ensure that the workpiece is cleaned by the operator, the water valve is always open, the water consumption is very large, and the waste is particularly serious. Increased production costs, while facing the increasingly depleted water resources, it is very important...

Claims

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Application Information

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IPC IPC(8): G05D21/02
Inventor 刘行全向云龙黎世军
Owner ZTE CORP SHENZHEN CITY
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