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Automatic steam control system of defibrator

A technology of automatic control system and thermal mill, which is applied in the pipeline system, mechanical equipment, gas/liquid distribution and storage, etc., and can solve the problem that the temperature and pressure of saturated steam are relatively strict, manual control valves cannot meet production needs, and steam volume Oversize and other problems, to achieve reasonable steam supply, reduce energy consumption, and improve production efficiency

Inactive Publication Date: 2007-06-06
SHANGHAI WOOD-BASED PANEL MASCH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Most small mills use manual control of the opening of the steam valve. As for the steam intake, it depends on the experience and estimation of the operator. Often, the steam volume is too large.
However, large mills over 42 inches have strict requirements on the temperature and pressure of saturated steam, and manual control valves can no longer meet production needs.

Method used

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  • Automatic steam control system of defibrator

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing 1,2,3 and embodiment, the present invention will be further described:

[0021] One embodiment of the present invention is the steam automatic control system of a heat refiner as shown in Figure 2 . The diameter of the grinding disc of the thermal grinding host 106 of this thermal grinding machine is 44 inches (diameter 1118 mm), the grinding disc rotating speed is 1490 rpm, and the power of the main motor is 2000 kilowatts.

[0022] This embodiment is composed of many pneumatic components shown in Figure 2, including steam pipes, pneumatic regulating valves, pneumatic ball valves, pressure transmitters, platinum thermal resistors, safety valves, stop valves and steam traps. The installation and connection steps of the system are as follows:

[0023] Saturated steam enters the pipeline system from the steam main pipe 301 and is divided into pipelines 302 and 303 through the tee pipe. The pipeline 302 mainly enters the pre...

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PUM

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Abstract

The present invention is automatic steam control system of large defibrator. The technological scheme of the present invention is that the automatic steam control system consists of pipeline, pneumatic regulating valve, pneumatic ball valve, platinum resistor, pressure transmitter, safety valve, cut-off valve, draining valve, etc. It used in controlling the steam replenishment, monitoring and maintaining during the defibrator operation. The present invention has the advantages of simple operation, reasonable and reliable steam supply, automatic balancing, capacity of reducing power consumption of the defibrator and raising production efficiency, etc.

Description

technical field [0001] The invention relates to a medium-density fiber-based panel production line equipment, in particular to an automatic steam control technology for a heat refiner in a fiber preparation section of the production line equipment. technical background [0002] In the past medium density fiberboard production line, the heat refiner system used in the annual output of 50,000 to 80,000 cubic meters of medium density fiberboard production line often needs to be imported. Preheating and cooking are important processes that affect fiber quality and yield. Appropriate cooking conditions can improve the quality of separated fibers and reduce the power consumption of the heat refiner. However, excessive cooking will damage the fiber itself, reduce the mechanical strength, often increase the moisture content of wood chips, and increase the energy consumption of the drying system, so the preheating and cooking steam must be controlled. The pressure of wood chips in ...

Claims

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Application Information

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IPC IPC(8): D21B1/14F17D1/06
Inventor 杨胜强
Owner SHANGHAI WOOD-BASED PANEL MASCH CO LTD
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