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Differential-pressure air conditioning device of pipeline pneumatic conveying system and control method thereof

A pneumatic conveying system and air flow adjustment technology, which are applied to the control of the above-mentioned devices and the field of differential pressure air flow adjustment devices, can solve the problems of ineffectiveness and inability to adjust the gas flow control, and achieve the effect of convenient use and accurate control.

Inactive Publication Date: 2010-10-06
杭州震乾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, a single-stage pressure mechanical regulating valve is used, and its disadvantages are: it cannot be adjusted in time according to the downstream pressure change, and it has no effect on gas flow control.

Method used

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  • Differential-pressure air conditioning device of pipeline pneumatic conveying system and control method thereof
  • Differential-pressure air conditioning device of pipeline pneumatic conveying system and control method thereof
  • Differential-pressure air conditioning device of pipeline pneumatic conveying system and control method thereof

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Embodiment 1

[0024] As attached to the manual figure 1 , 2 As shown, a differential pressure airflow adjustment device of a pipeline pneumatic conveying system includes a pressure sensor 1 for measuring the pressure downstream of the pipeline, a pressure adjustment assembly 2 arranged upstream of the pipeline, and controls the air flow according to the measured value of the pressure sensor. Central control unit 3 of the pressure regulation assembly. The pressure regulating assembly 2 includes a Laval injector 21 arranged upstream of the pipeline and a regulating valve 22 for adjusting the throat cross-sectional area of ​​the Laval injector 21 . The regulating valve 22 includes an inlet chamber 23 which is airtightly connected with the side end where the throat of the Laval injector 21 is located and is used for passing compressed air into the Laval injector, and a needle tip part which can move into the An adjustment needle 24 for the throat of the Laval injector 21 and a push assembly f...

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Abstract

The invention relates to a pipeline pneumatic conveying device, in particular to a differential-pressure air conditioning device of a pipeline pneumatic conveying system and a control method thereof. The differential-pressure air conditioning device of the pipeline pneumatic conveying system is characterized by comprising a pressure sensor for measuring the downstream pressure of a pipeline, a pressure regulation assembly arranged at the upstream of the pipeline and a central control unit for controlling the pressure regulation assembly according to a measurement value of the pressure sensor. The invention has the characteristics of conditioning air current in time according to the downstream pressure change of the conveying pipeline and effectively implementing automatic air current control, convenient use, precise control, and the like to pipeline pneumatic conveying.

Description

technical field [0001] The invention relates to a pipeline pneumatic conveying device, in particular to a differential pressure airflow regulating device of a pipeline pneumatic conveying system, and also relates to a control method of the above-mentioned device. Background technique [0002] As we all know, pipeline pneumatic conveying technology has developed rapidly in recent years, and this low-energy, low-pollution conveying method has been widely used in chemical, chemical fiber, food, pharmaceutical and other industries. In the pipeline pneumatic conveying system, in order to achieve the unity of stable conveying work and low energy consumption, airflow control is necessary. Especially after pneumatic conveying expands to large-capacity, medium- and long-distance conveying fields, the importance of airflow control becomes more obvious. [0003] For granular materials, when transporting medium and long distances, the materials are constantly impacted and rubbed in the...

Claims

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Application Information

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IPC IPC(8): G05D16/20
Inventor 言侃黄韬
Owner 杭州震乾科技有限公司
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