Air cushion type headbox air flow control system adopting high-pressure fan to blow air

Abstract

The invention relates to an air cushion type headbox air flow control system with a high-pressure fan for blowing air. The air cushion type headbox air flow control system solves the problems that in the prior art, a Roots blower is large in noise and maintenance amount, engine oil needs to be replaced and cleaned regularly, and environmental pollution is caused. The system comprises a control cabinet, a display, operation and control all-in-one machine is installed on a cabinet door of the control cabinet, a PLC is installed in the control cabinet, the display, operation and control all-in-one machine is connected with the PLC through an Ethernet port, a first liquid level pressure sensor and a second liquid level pressure sensor on a headbox are connected with the PLC, a high-pressure fan is connected with the PLC, and the high-pressure fan is connected with the PLC. A variable-frequency governor of the high-pressure fan is arranged in the control cabinet, the high-pressure fan is connected with the headbox, and the sizing pump motor and the frequency converter are connected with the PLC.

Description

Technical field: [0001] The invention belongs to the technical field of papermaking headbox control, and relates to an air-cushion type headbox air flow control system for blowing by a high-pressure fan. Background technique: [0002] The traditional headbox air cushion pressure control equipment structure has two forms: one is the Roots blower as the air cushion pressure control device, and the other is to use the compressed air and the air flow control method of the air storage tank to realize the air cushion pressure control. The latter is only suitable for occasions with a stable compressed air source due to its high requirements on the stability of compressed air, while the former is the main equipment configuration and system structure at present, and has been used for decades. However, the Roots blower is noisy and requires a lot of maintenance, which requires regular oil changes and cleaning and other operations that pollute the environment. With the advancement of ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an air cushion type headbox air flow control system with high-pressure blower blowing, which overcomes the problems of the Roots blower in the prior art, such as high noise, large maintenance, and the need for regular oil replacement and cleaning. pollution problem

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