JPH02247486A - Moisture conditioning device in high pressure hot air drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a humidity control device in a high-pressure hot air dryer for cheese and other textile products.

Conventional Technology Traditionally, when cheese, tops, and other textile products are dried using a batch-type high-pressure hot air dryer, hot air heated by a heater is circulated through the circulation system to prevent any undried parts from remaining. Make sure to dry evenly all the way to the edges.

Problems to be Solved by the Invention However, when the object to be processed is dried to the edges so that no undried parts remain as described above, the natural drying of cheese or other objects to be processed before dyeing or other processing is difficult. More moisture has been removed than in the original state, and the yarn weight is 5 to 1% lower than the original weight.
It is in a state where it has decreased by 0% (overdrying). If this over-dried state is used for weaving, knitting, etc., there are problems such as thread breakage due to the generation of static electricity, weaving and knitting problems such as fuzz room, etc. To avoid this, the Measures such as placing the product in a humidity-controlled room for days to absorb moisture before shipping were used.

The purpose of the present invention is to solve the above-mentioned problems, and to make it possible to obtain a drying product that does not cause loss of yarn weight and that can be used for weaving or knitting immediately after drying without causing any trouble. The present invention aims to provide a humidity control device for a high-pressure hot air dryer.

Means for Solving the Problems In order to achieve the above object, the present invention provides a high-pressure hot air dryer in which a blower, a heater, a drying pot, a cooler, a mist separator, and a blower are connected in series in this order. A bypass path connected to the front and rear system lines is provided, and a humidifier that sprays and injects water or steam is installed in the front position of the cooler, and after the drying process is completed, the circulation system path is switched and the humidity of the material to be dried is adjusted. To provide a humidity control device for a high-pressure hot air dryer in which air is circulated to contain moisture at an official moisture content.

Function The circulation system path in the present invention includes a gate valve attached to the inlet side of the heater and a bypass valve provided in the bypass path.
Since they open and close simultaneously according to control instructions, the circulation path can be switched instantly. Therefore, air that is not affected by the heat of the heater can be sent to the drying oven. In addition, since a humidifier for spraying water or steam is provided at the front of the cooler, the humidity of the circulating air can be adjusted to adjust the moisture content of the dried material to the official moisture content.

Example The embodiments shown in the drawings will be described below.

1 is a blower, 2 is a heater, and 3 is a drying pot, in which cheese and other materials to be dried are loaded. A gate valve 4 is provided on the yarn path on the inlet side of the heater 2, a bypass pipe 5 that does not pass through the heater 3 is provided, and a bypass valve 6 is provided. 7 is a humidifier,
8 is a humidifying valve, and 9 is a pump. 10 is a cooler, 11 is a mist separator, and a humidifier 7 is provided in front of the cooler IO. 12 indicates the material to be dried.

During the drying process, the blower is driven with the gate valve 4 open, the bypass valve 6 closed, and the humidification valve 8 closed.

The air coming out of the blower 1 is heated by the heater 2 and sent to the drying pot 3.
The material to be dried is dried. The air coming out of the drying pot 3 is cooled by a cooler lO, and further passed through a mist separator 1.
1, the drain is discharged outside the system, and the air returns to the blower 1. Drying is performed by such air circulation.

In the present invention, in order to prevent overdrying during drying, after the drying process is completed, the gate valve 4 is closed, the bypass valve 6 is opened, the humidifying valve 8 is opened, and the blower l is driven, so that the overdrying state is maintained. It is characterized by circulating conditioned air by supplying moisture or steam from the humidifying device 7 to the object 12 to be dried, which has become dry, to absorb moisture up to the official moisture content without being affected by the heat of the heater. It is something.

The official moisture content is typically as follows for wool, cotton, polyester, etc., and in the present invention, the amount of spray M in the humidifying device 7 can be adjusted so as to reach this value.

Effects of the Invention Since the present invention has the above-described configuration, after the completion of the drying process, the air whose humidity has been adjusted by switching the circulation path is forcedly circulated without being affected by the heat of the heater, so that the drying process can be completed in an extremely short period of time. It is now possible to adjust the drying material to the official moisture content within a short period of time.

Therefore, the material to be dried prepared by the device of the present invention does not lose its yarn weight at the end of the drying process, and even if it is immediately used for weaving or knitting, there are no problems such as yarn breakage or fluffing due to static electricity generation. . Therefore, there is no need to store it in a controlled room for several days after drying as in the conventional case, and the next process can be carried out immediately.
Its practical effects are significant, such as improved quality and increased production efficiency.

[Brief explanation of drawings]

The drawings are cross-sectional views showing embodiments of the present invention. 1-... Air blower 2... Heater 3... Drying pot 4... Gate valve 5... Bypass pipe 6... Bypass valve 7... Humidifier 8... Humidifying valve lO...
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Claims (1)

[Claims] (1) In the circulation system of a high-pressure hot air dryer in which a blower, a heater, a drying pot, a cooler, a mist, a separator, and a blower are connected in series in this order, a bypass path connected to the front and rear systems of the heater is provided, A humidifier that sprays and injects water or steam is installed in front of the cooler, and after the drying process is completed, the circulation system path is switched and the conditioned air is circulated to the material to be dried so that it contains moisture at the official moisture content. A humidity control device for a high-pressure hot air dryer, which is characterized by: