JPH0554033B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a dryer used for continuously conveying textile products, particularly for dry heat treatment of fabrics.

(Background of the Invention) Liquid-impregnated treatment is essential when industrially produced long fabrics are processed, such as pretreatment, dyeing, mercerization, and washing. A drying process is required to perform heat treatment such as drying. Therefore, in the past, as a means for continuously drying a long length of liquid-impregnated fabric, for example, a drying means using an electric heater has generally been adopted.
Since the drying heat energy provided by the electric heater described above is relatively weak, it is necessary to apply heat to the fabric for a long time, resulting in large-scale equipment. Furthermore, it takes a long time to complete drying, and the drying efficiency is low. A number of problems arose. Furthermore, due to the short lifespan of the heater, partial non-heat generation occurs due to disconnection of the heater, which causes uneven heat treatment (drying unevenness,
There were also problems such as uneven dyeing, etc., resulting in poor processing. Furthermore, in conventional dryers of this type, when the transfer of fabric is interrupted or stopped, the residual heat of the heater burns out the fabric part facing the heater. A mechanism was required to move the heater away from the fabric, which caused the problem of making the device larger and more complicated.

(Purpose of the Invention) Taking note of the fact that a catalytic combustion burner that uses combustion gas as a heating medium has recently been developed, the inventor of the present invention has developed a long fabric for transporting by applying this catalytic combustion burner that can produce high thermal energy. We have developed a dryer that can perform continuous heat treatment quickly and effectively, and can also directly cut off heat application to the fabric when the fabric is stopped, thereby preventing burnout of the fabric.

(Embodiments of the Invention) The present invention will be described in detail below based on embodiments shown in the drawings.

1 is a base frame; 2 is a large number of guide rolls rotatably supported by the base frame 1;
By this guide roll 2, the fabric 3 to be treated
It is designed to be transported in a meandering manner up and down. Note that this guide roll 2, especially the upper guide roll 2, is a water-cooled roll in order to prevent it from being abnormally heated by radiant heat from a burner, which will be described later. Numeral 4 is a gas burner installed in multiple stages (two stages in this example) above and below in order to impart thermal energy in the form of far infrared rays to the surface of the fabric 3 meandering in the vertical direction. A well-known catalytic combustion burner (hereinafter simply referred to as a burner) developed by Gas Engineering Co., Ltd. is applied. The burner 4 has a structure that irradiates far infrared rays only on one piece of the fabric 3, but the burner 4', which is located between the fabrics 3 on both sides, irradiates far infrared rays from both sides with two burners 4 placed back to back. It was configured so that it can be done. In addition, each burner 4,
A protective wire mesh 5 is provided at a distance from the far-infrared irradiation surface 4'. Reference numeral 6 indicates a gas supply port 6 for supplying combustion gas into the burners 4, 4'. Reference numeral 7 denotes an air supply duct disposed close to the lower part of each burner 4, 4', and an air supply duct 7 is provided between the far infrared ray irradiation surface of each burner and the wire mesh 5 on the upper surface of the air supply duct 7. An air injection nozzle 8 for feeding air is provided, and an air outlet 9 from which air is blown out toward the fabric 3 is provided at the lower corner of the air supply duct 7. Reference numeral 10 denotes an air supply port which is provided in the air supply duct 7 and communicates with an air supply source by a turbo blower with an inverter motor that can be switched between high and low rotations. Reference numeral 11 denotes an intake duct provided below each air supply duct 7, and intake ports 12 are provided on both sides of this intake duct 11. Reference numeral 13 denotes a vacuum opening leading to a vacuum mechanism (not shown).

The above is the configuration of this embodiment. Next, the operation will be described. The fabric 3 to be treated is transferred by the driving force of the guide roll 2, and at the same time, the burners 4 and 4' are burned. The fabric is heat-treated by irradiating it with far-infrared rays. At this time, a turbo blower (not shown) is rotated at a low speed to supply a small amount of air from the air injection nozzle 8 of each air supply duct 7 between the far-infrared irradiation surface of the burner and the wire mesh 5, so that the burner 4, ', incomplete combustion of gas can be prevented and effective combustion can be maintained. Also, by creating a negative pressure in the intake duct during this combustion operation, the humid air that was heated and vaporized by the lower burner is taken in through the intake port, so it rises and re-attaches to the fabric. It has the effect of enhancing the drying effect without causing any dryness.

Furthermore, at the same time, the rise of the vaporized humid air is blocked by the air blown out from the air outlet 9 of each air duct 7, and the humid air is transferred to the air inlet 12.
Since it is guided to the side, heat treatment such as drying can be performed efficiently.

When the transfer of the fabric 3 is interrupted, or when the heat treatment of the fabric 3 is completed and the running of the fabric 3 is stopped, the fabric 3 may be burned out due to the residual heat of the burners 4, 4' that are close to the fabric 3. There is a risk of
A sensor (not shown) automatically detects that the fabric has stopped running, and based on this detection output and a control configuration (not shown), the rotation of the turbo blower is switched to high speed, and powerful air is ejected from the air injection nozzle 8. By being injected, the residual heat of the burners 4, 4' is blown away, and the burners 4, 4' are cooled to eliminate the radiant heat to the fabric 3, so that the fabric whose running has been stopped can be prevented from being burnt out. . Therefore, in the past, a mechanism and space were required to move the burner away from the fabric at the same time as the fabric stopped in order to prevent burnout of the fabric whose running was stopped, but in this embodiment, there is no need to move the burner.
This has the effect of simplifying the configuration and making the device more compact.

(Summary of the Invention) As described above, the present invention provides a catalyst having a far-infrared irradiation surface located parallel to and close to both surfaces of a continuously running fabric, and a wire mesh spaced outside the irradiation surface. Combustion burners are provided in multiple stages up and down along the running direction of the fabric, and below each catalytic combustion burner there is an air injection nozzle that supplies air between the far-infrared irradiation surface and the wire mesh, and an air injection nozzle that supplies air between the far-infrared irradiation surface and the wire mesh, and an air injection nozzle that supplies air between the far-infrared irradiation surface and the wire mesh, and an air supply duct that has an air outlet that blows air towards the fabric; an air intake duct that is installed below the air supply duct to capture and suck the vaporization heat that is generated from the fabric and tries to rise; , a continuous dryer for fabrics, characterized in that it is equipped with a fan control mechanism that increases the air injection force from the air injection nozzle.

(Effects of the Invention) Therefore, according to the continuous dryer for fabrics of the present invention, by providing the air supply duct, incomplete combustion of the burner can be prevented, energy saving can be achieved, and the running of the fabric can be stopped. Sometimes, residual heat can be blown away to effectively prevent fabric burnout. Therefore, in the past, a mechanism and space were required to move the burner away from the fabric at the same time as the fabric stopped in order to prevent burnout of the fabric whose running was stopped, but in this embodiment, there is no need to move the burner, so the structure is improved. This has the effect of making it possible to simplify and make the device more compact. In addition, by providing an intake duct, the humid air that was heated and vaporized by the lower burner is taken in through the intake port, so it does not rise and re-adhere to the fabric, which improves the drying effect. It has an enhancing effect. Furthermore, at the same time, the rise of the vaporized humid air is blocked by the air blown out from the air outlet 9 of each air duct 7, and the humid air is transferred to the air inlet 1.
Since it is guided to the second side, heat treatment such as drying can be performed efficiently.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing how the dryer according to the present invention is used, FIG. 2 is an enlarged explanatory diagram of the main parts thereof,
FIG. 3 is an enlarged sectional view of the main part. 1... Base frame, 2... Guide roll, 3... Fabric, 4, 4'... Burner, 5... Wire mesh, 6... Gas supply port, 7... Air supply duct, 8... Air injection nozzle , 9...Air outlet, 10...Air supply port, 11...Intake duct, 12...Intake port, 1
3...Bakyumu mouth.

Claims (1)

[Claims] 1. A catalytic combustion burner having a far-infrared irradiation surface located parallel to and close to both sides of the continuously running fabric, and a wire mesh spaced apart from the irradiation surface, is placed along the running direction of the fabric. The catalytic combustion burner is provided in multiple stages, and is provided below each catalytic combustion burner with an air injection nozzle that supplies air between the far-infrared irradiation surface and the wire mesh, and an air outlet that blows air toward the diagonally lower fabric surface. an air supply duct; an intake duct provided below the air supply duct to capture and suck the vaporization heat generated from the fabric and rising; A continuous dryer for fabrics, characterized by being equipped with a fan control mechanism.