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Automatic exhaust controller at feed port

A feeding port and controller technology, applied in the field of automatic control, can solve the problems of environmental pollution, dust, volatile organic compounds unorganized emission, and failure to open the exhaust fan according to the requirements of the operating procedures, so as to avoid omissions and reduce pollution.

Inactive Publication Date: 2013-11-20
WESTERNHOUSE AUTOMATION CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In production practice, due to trouble or other reasons, operators often fail to turn on the exhaust fan according to the operating procedures after each feed is completed, or even forget to close the feed port due to negligence, resulting in dust and volatile organic compounds. Organizational emissions, causing environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An automatic air exhaust controller for a feeding port includes a feeding detector and a control unit, and the feeding detector sends a detection signal to the control unit; when the control unit judges the feeding state according to the received detection signal, and controls the operation of the ventilation system according to the feeding state .

[0026] The feeding detector is a contact switch or an infrared switch sensor installed at the feeding port. When the cover plate of the feeding port is closed or opened, the contact switch or the infrared switch is in different states of off or on respectively, and sends The control unit outputs a detection signal.

[0027] The control unit judges the feeding state according to the detection signal of the feeding detector, including a combination of one or more of the following judgment rules:

[0028] 1) When the feeding port changes from the closed state to the open state and remains open for more than the set time T1, i...

Embodiment 2

[0039] An automatic air exhaust controller for a feeding port includes a feeding detector and a control unit, and the feeding detector sends a detection signal to the control unit; when the control unit judges the feeding state according to the received detection signal, and controls the operation of the ventilation system according to the feeding state .

[0040] The feeding detector is a travel switch installed at the feeding port. When the cover plate of the feeding port is closed or opened, the travel switch detects the switching action of the feeding port and outputs a detection signal to the control unit.

[0041] The control unit judges the feeding state according to the detection signal of the feeding detector, including a combination of one or more of the following judgment rules:

[0042] 1) When the feeding port changes from the closed state to the open state and remains open for more than the set time T1, it is judged that the feeding port is in the feeding state; ...

Embodiment 3

[0051] An automatic air exhaust controller for a feeding port includes a feeding detector and a control unit, and the feeding detector sends a detection signal to the control unit; when the control unit judges the feeding state according to the received detection signal, and controls the operation of the ventilation system according to the feeding state .

[0052] The feeding detector is an infrared sensor with human body induction or motion induction recognition function, which can identify the state change of the operator or material in front of the feeding port. When an operator or a material transport vehicle appears at the set position in front of the feeding port, the human body induction infrared sensor outputs a detection signal to the control unit; or, when the operator or the material transport vehicle at the set position in front of the feeding port moves, the motion sensing infrared sensor A detection signal is output to the control unit.

[0053] The control unit...

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PUM

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Abstract

The invention belongs to the field of automatic control, in particular to an automatic control technique applied to chemical process environment-friendly equipment, and aims at providing a method for automatically controlling the running of a gas accumulation and exhaust system at a feed port by automatically identifying the operation state of the feed port based on the operation characteristic analysis of the chemical production process. An automatic exhaust controller at the feed port provided by the invention comprises a feed detector and a control unit, and is characterized in that the feed detector sends a detection signal to the control unit, and the control unit judges the feed state according to the received detection signal and controls the running of an exhaust system according to the feed state. The automatic exhaust controller at the feed port has the effective effects that as the operation state of the feed port is automatically identified and the running of the gas accumulation and exhaust system at the feed port is automatically controlled, omissions caused by manual operation can be prevented and the pollution caused by the unorganized emission of waste gas is reduced.

Description

technical field [0001] The invention belongs to the field of automatic control, in particular to an automatic control technical method applied to chemical process environmental protection equipment. Background technique [0002] Reactors, agitators, pre-mixers and other equipment used in chemical, light industry and other industries usually transport the main gaseous and liquid materials through pipelines, and manually feed solid materials and small-package liquid materials from the feeding port. When feeding solid powder, a large amount of dust will be scattered; when feeding liquid, organic solvents will also volatilize. If the feeding port is not sealed, the solvent in the reactor will volatilize in large quantities during the reaction. Therefore, the feeding port is generally equipped with a cover plate, which is opened when feeding and closed when the feeding is finished. Furthermore, in order to avoid fugitive discharge of dust and solvents, a gas collecting hood is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
Inventor 张友能黄晓峰
Owner WESTERNHOUSE AUTOMATION CHANGZHOU