Drawing heat box device

A hot box and drafting technology, applied in the direction of stretch spinning, etc., can solve problems such as the influence of the heater radiated hot air temperature, and achieve the effect of improving the accuracy of air temperature control, fiber quality and air speed.

Inactive Publication Date: 2005-03-09
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

It can be seen that the existing drawing hot box device uses a centrifugal fan to heat the hot air to the tow in a circular manner, which can not only reduce the waste of heat energy but also make the air temperature relatively stable. The quality of the drawing hot box depends on The wind speed and wind temperature of the hot air circulation, and the control of the wind temperature is another technical problem. The existing drafting hot box has only one air inlet 10 and one air outlet 11, and the air inlet 10 is far away from the air outlet 11 (if When the length of the drafting hot box is 4 meters), the temperature difference will be generated due to the relatively long distance between the air inlet 10 and the air outlet 11, which is generally ±3°C-±5°C. The technical requirements for high-quality fibers, and because the hot air heating method of the drafting hot box is mostly electric heating, the heater is generally placed below the tunnel, because the heater can generate a high temperature above 300 ° C during heating, so the heater’s Radiant heat also affects the air temperature. In order to solve the problem of air temperature control accuracy in the drafting hot box, the device has been improved

Method used

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. This embodiment is only used to explain the present invention, but the protection scope of the claims of the invention is not limited by this embodiment.

[0032] Fig. 1 shows an embodiment of the drafting hot box device of the present invention, the drafting hot box device in the present embodiment comprises tunnel 1, the tow entrance 21 and the tow outlet 22 that are positioned at the two ends of the tunnel, and are respectively located at the tunnel Two air inlets 31, 32 at one end and the middle position, the wind speed regulating baffle 311 at the two air inlets, the air duct 4 located below the tunnel, the centrifugal fan 5 located at one end of the air duct, the electric heater 6 located in the air duct, and The static pressure box 7 etc. that is positioned at the air duct is composed. In this embodiment, there are two air inlets of the drafting ...

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Abstract

A heating case system for drafting tow is composed of a channel with a tow inlet, at least two air inlets, a tow outlet and an air outlet, and an air channel in which there are a centrifugal fan, an electric heater far from said channel and a static pressure box. It has high precision of air speed and air temp.

Description

technical field [0001] The invention relates to a drawing hot box device, especially a drawing hot box device used in spinning, which is an improvement to the existing drawing hot box device. Background technique [0002] The drawing hot box is a device often used in spinning. It is a device that heats the tow and then draws it. Existing drawing hot box device as shown in Figure 2, comprises: one end has tow inlet 12 and air inlet 10 and the other end has the tunnel 14 of tow outlet 13 and air outlet 11, also has an end to be provided with air outlet and The other end is provided with the air duct 15 of air inlet, and the air inlet of air duct and the air outlet are connected with the air outlet 11 of tunnel and air inlet 10 respectively; heater. It can be seen that the existing drawing hot box device uses a centrifugal fan to heat the hot air to the tow in a circular manner, which can not only reduce the waste of heat energy but also make the air temperature relatively st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/12
Inventor 王颢林相来金小芳张琦张彩霞李启明毕英华马彦孙玉山林华体
Owner CHINA PETROLEUM & CHEM CORP
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