JPH0635708B2 - Heat treatment equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a heat treatment apparatus for applying heat air to a belt-like material such as cloth to perform heat treatment and drying.

[Prior Art] Conventionally, as a heat treatment apparatus having the above-mentioned configuration, a belt-like material such as a cloth to be treated is run in a certain direction inside a casing which is a heat-treating chamber, and heat treatment is performed by applying hot air to the belt-like material. It is drying.

As such a heat treatment apparatus 210, there is first one having the following structure as shown in FIG.

A plurality of nozzle boxes 224 are arranged on the upper surface and the lower surface of the running belt F in the longitudinal direction of the belt F, and a fan, which is a blower, is installed on the ceiling surface and the bottom surface of the casing 212.
20 is provided, and the pair of fans 220 and the plurality of nozzle boxes 224 are connected by the ducts 234 provided on both sides of the casing 212. In addition, in order to heat the air from the fan 220, a heat exchanger
There were four 36s. Furthermore, with this heat exchanger 236,
There was also a filter 238 to purify the air.

In the operating state of the heat treatment apparatus 210, the wind sent from the fan 220 flows toward both sides of the casing 212 in the duct 234, passes through the heat exchanger 236, respectively, and passes through the nozzle box.
Enter the inside of the nozzle box 224 from both left and right sides of 224,
The hot air was blown onto the strip F from the outlet 230 by merging inside the nozzle box 224.

As the second heat treatment apparatus 310, there is one as shown in FIG.

That is, one fan 320 is provided on the left side of the casing 312, and air is sent from this fan 320 to the nozzle boxes 324 in a plurality of rows provided on the upper and lower surfaces of the strip F through ducts 334.

[Problems to be Solved by the Present Invention] In the first heat treatment apparatus 210, the hot air blown onto the strip F is repelled by the strip F, passes through the side of the nozzle box 224, and passes through the casing 212. It flows to the center and returns to fan 220. Therefore, neither side of the strip F is overdried, nor is hot air blown out from the inlet / outlet of the strip F provided in the casing 212.
However, in this heat treatment apparatus 210, it is necessary to provide two fans 220 on the ceiling surface and the bottom surface of the casing 212, and at the same time, the heat exchanger 236 and the filter 238.
It is necessary to provide four units each. Therefore, there is a problem in that the structure becomes complicated and costly. Further, since the heat exchangers 236 are built in on both sides, the width of the casing 212 becomes large.

The second heat treatment apparatus 310 has the following problems.

When the air returning from the strip F to the fan 320 (hereinafter referred to as return air) is returned from one side of the casing 312, a large amount of hot air passes through only one side of the strip F, which causes overdrying and the strip F is on one side. There is a problem that it is pulled.

Further, when the return air is returned from the central portion of the casing 312 to the fan 320 on one side, there are the following problems.

Covers are required to prevent hot air from escaping to both sides of the strip F.

A passage for return air must be secured in the center of casing 312.

When the return air returns to the fan 320 on one side through the return air passage in the central part of the casing 312, it is often blown out from the inlet / outlet of the strip F. Further, when both sides of the strip F are covered with a cover, the air pressure in the space covered with the cover becomes higher than the atmospheric pressure, and the possibility that return air is blown out from the inlet / outlet increases further. There is a point. In particular, this problem can be said to be the biggest problem of the second heat treatment apparatus 310.

Further, in this second heat treatment apparatus 310, since the fan 320 is attached to one side of the casing 312, the inside of the casing 312 cannot be seen from both sides, and the nozzle box 324 is pulled out and the inside of the casing 312 is cleaned. ,
There is a problem in that maintenance and the like are troublesome.

[Object of the Invention] In view of the above problems, the present invention provides a heat treatment apparatus which simplifies the internal structure of a casing and prevents problems such as overdrying with respect to strips.

[Means for Solving the Problems] A heat treatment apparatus according to claim 1 of the present invention is an air intake, an exhaust port, and an air blower provided in a casing that is a heat treatment chamber, and heating for heating air from the blower. The device, a plurality of nozzle boxes extending in the width direction with respect to a strip-shaped article such as a cloth running in the front-rear direction of the casing and having an outlet on the surface facing the strip-shaped article, and hot air from the heating device A heat treatment device comprising a duct for feeding a plurality of nozzle boxes, wherein the air blower is disposed at least above or below the center in the width direction of the strip, and the plurality of nozzle boxes are arranged in the longitudinal direction of the strip. The nozzles are arranged at a predetermined interval, and a connection port with a duct is provided in the widthwise central portion of the surface of each nozzle box that faces the outlets, and the duct is provided narrower than the width direction of the nozzle box. In addition, it is connected to the connection ports of a plurality of nozzle boxes.

In the heat treatment apparatus according to claim 2 of the present invention, a surface of the duct facing the strip is opened, and a plurality of nozzle boxes are arranged in the opening at predetermined intervals in the longitudinal direction of the strip. The opening of the duct between the adjacent nozzle boxes is closed by a closing plate.

[Operation] In the heat treatment apparatus of claim 1, the air blown by the blower becomes hot air of a predetermined temperature by passing through the heating device, and is sent to the plurality of nozzle boxes through the duct. Since the nozzle boxes are arranged at a predetermined interval in the longitudinal direction of the belt-like material, hot air is evenly applied to the traveling belt-like material. The hot air that hits the strip, that is, the return air, passes between the adjacent nozzle boxes, passes through the side of the duct, and returns to the blower. In this case, since the width of the duct is smaller than the width of the nozzle box, there is no obstacle when the return air returns to the blower.

Next, according to the heat treatment apparatus of claim 2, the nozzle box is attached to an arbitrary portion of the opening of the duct. When a plurality of nozzle boxes are attached to the opening of the duct, the opening is formed on the surface of the duct facing the strip. Therefore, a closing plate is attached to this opening to close the opening.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

Reference numeral 10 is a heat treatment apparatus of the present embodiment, which applies hot air to the cloth of a belt-like material to dry it.

Reference numeral 12 is a casing which is a heat-drying chamber, the front surface of which is provided with an insertion opening 14 for the cloth F, and the rear surface thereof is provided with an outlet 16 for the cloth F 1. Further, windows 18 are provided on both side walls of the casing 12 so as to observe the inside of the casing 12.

Reference numeral 20 is a fan provided on the ceiling surface of the casing 12, and reference numeral 22 is a fan provided near the bottom surface of the casing 12. These fans 20 and 22 exhaust air from the exhaust port 28a on the front of the casing 12 and
Intake air from 28b.

Reference numeral 24 is a nozzle box arranged on the upper surface of the moving fabric F 1, and is arranged in a plurality of rows at predetermined intervals in the longitudinal direction of the fabric F 1. The width of the nozzle box 24 is slightly wider than the width of the cloth F, and hot air outlets 30 are provided in the width direction on the surface facing the cloth F. Further, a connection port 32, which is a blowing port for hot air, is opened on the surface facing the blowout port 30, that is, on the upper surface of the nozzle box 24.

The fans 20 and 22 are arranged above and below the center of the moving cloth F in the width direction.

This prevents the fabric F from being drawn in one direction.

Reference numeral 34 is a duct for sending air from the fan 20 to the nozzle box 24. This duct 34 is divided into an upper duct 34a and a lower duct 34b.
The a extends from the air outlet of the fan 20 provided in the substantially central portion of the ceiling surface of the casing toward the front surface of the casing 22. Inside the duct 34a, the primary filter
A heat exchanger 38, a heat exchanger 36, and a secondary filter 40 are provided. The heat exchanger 36 has a pipe in which steam or high-temperature oil circulates, and heats the air sent from the fan 20 to a constant temperature. Further, the primary filter 38 and the secondary filter 40 are for removing dust and the like inside the air that is sent. In particular, the two filters 38 and 40 are provided in order to further remove dust in the air and prevent dust and the like from adhering to the cloth F.

One end of the lower duct 34b is connected to the upper duct 34a, and the other end of the lower duct 34b extends rearward from the front portion of the casing 12 along the longitudinal direction of the fabric F 1. The bottom of this duct 34b,
That is, all the surfaces facing the fabric F are open. Further, the height of the duct 34b decreases toward the rear, and the ceiling surface portion is inclined. By inclining the ceiling surface part in this way, hot air is blown into the casing.
In the front-back direction of 12, evenly hit the fabric F. The width of the duct 34b is smaller than the width of the nozzle box 24. Due to the above, this duct 34
Blows the air sent from the fan 20 through the primary filter 38, the heat exchanger 36, and the secondary filter 40 into the front surface of the casing 12, and further from this front surface toward the rear surface of the casing 12. Is to be sent.

Reference numeral 42 is a groove provided at both end portions of the lower portion of the duct 34b, and this groove engages with the suspending portion 44 protruding from both end portions of the connecting port 32 of the nozzle box 24. That is, by engaging the groove 42 and the hanging portion 44 of the nozzle box 24, the nozzle box is provided below the duct 34b.
24 can be installed.

Reference numeral 46 is a slide-type closing plate slidably provided on the lower surface of the duct 34b, and two closing plates 46b and 46a are provided so as to be vertically overlapped. Then, one end of the closing plate 46a is bent downward so as to contact the rear surface of the noise box 29 without a gap, and one end of the closing plate 46b is also adjacent to the nozzle box 24.
It is bent downward so that it is attached to the front of b without any gap.
As a result, the space between the nozzle boxes 24 and 24 is reduced by the groove 42.
The slide type closing plate 46 completely closes the space between them.

As described above, the lower surface of the duct 34b is completely closed by the plurality of nozzle boxes 34 and the closing plate 46b, and functions as a duct.

A plurality of nozzle boxes 26 arranged on the lower surface of the cloth F are also connected to the fan 22 by a duct 48. This duct
The fan 48 is also divided into an upper duct 48b and a lower duct 48b, and the lower duct 48a has a primary filter 50, a heat exchanger 52, and a secondary filter 54 built therein, and a fan provided almost at the center of the bottom surface of the casing 12. It extends from 22 to the rear surface of the casing 12. One end of the upper duct 48b is the lower duct.
It is connected to 48a and extends from there towards the front of the casing 12. The upper duct 48b is inclined so that its height decreases toward the front. The front surface of the upper duct 48b also has an open upper surface, the nozzle duct 26 and the closing plate 56 are provided in the same manner as the duct 34, and the opening is closed. In addition, this upper duct
The width of 48b is also smaller than the width of the nozzle box 26. Further, the nozzle box 24 and the nozzle box 26 are arranged so that their outlets are staggered.

The upper duct 48b and the lower duct 48a are bellows-shaped ducts 48.
connected by c. Also, the upper duct 48b has 4
It is supported by a jack 49 driven by a book motor 51. Accordingly, the upper duct 48b can be moved up and down while being connected to the lower duct 48a, which is convenient for maintenance.

The operating state of the heat treatment apparatus 10 having the above structure will be described below.

The fabric F is run from the front surface of the casing 12 to the rear surface side in a floating state at a constant speed. Next, the wind is generated by the fan 20, and then the duct 34 is provided with the primary falter 38 and the heat exchanger.
36, send it to the lower duct 34b through the secondary filter 40.
The wind turned into hot air by the heat exchanger 36 is blown from the outlets 30 of the plurality of nozzle boxes 24 onto the upper surface of the cloth F running. The wind after being blown on the fabric F, that is, the return air, passes between the adjacent nozzle boxes 24, 24, goes upward, and passes through both sides of the lower duct 34b, and is provided on the ceiling of the casing 12. Return to the fan position. In this case, since the width of the lower duct 34b is formed smaller than the width of the nozzle box 24, when the return air goes upward, the lower duct 34b does not become an obstacle and reaches the fan 22 smoothly. .

Further, the wind generated by the fan 22 also passes through the duct 48, passes through the primary filter 50, the heat exchanger 52, and the secondary filter 54 and reaches the upper duct 48b. The wind heated by the heat exchanger 52 passes through the upper duct 48b and is blown from the plurality of nozzle boxes 26 onto the lower surface of the fabric F 1. This return air is then fed to the adjacent nozzle boxes 26,2.
6 through the side of the upper duct 48b and back to the fan 22. In this case as well, since the width of the upper duct 48b is formed smaller than the width of the nozzle box 26 in the same manner as described above, it does not hinder the flow of the return air,
Return to fan 22 smoothly.

Furthermore, in the heat treatment apparatus 10 of the present embodiment, it is possible to freely change the interval between the nozzle boxes 24, 24,
The space formed between them is the sliding type closing plates 46a and 46a.
It can be closed freely by b. Therefore, the distance between the nozzle boxes can be changed depending on the type of the cloth F. Further, in the heat treatment apparatus 10, the fans 20 and 22 are provided on the ceiling portion and the bottom portion of the casing, and the duct 34 and the duct 48 are provided on the central portion of the casing 12, so that they are provided on both side surfaces of the casing 12. It is possible to observe the inside through the window 18 except for the above.

Further, in the heat treatment apparatus of the present embodiment, as shown in FIG. 2, the pair of fans and ducts are installed at vertically symmetrical positions in the casing 12, so that the air flow is smooth.

9 to 11 show the structure of the duct 134 of the heat treatment apparatus 110 according to the second embodiment of the present invention.

In the first embodiment, the closing plates 46a and 46b are slidably provided, but in this embodiment, the closing plate 146 is detachably attached to the lower surface of the lower duct 134. Therefore, after freely setting the interval between the nozzle boxes 124, 124, it is possible to close the opening of the lower duct 34 by attaching the closing plate 146 according to this interval. Further, if the nozzle box 124 is detachably attached to the lower duct 134, the type of the nozzle box 124 can be freely changed according to the cloth F to be processed.

[Advantages of the Invention] The heat treatment apparatus according to claim 1 of the present invention has the following advantages.

One air blower and one heater for one duct
Therefore, the structure is simple.

Since the width of the duct is smaller than the width of the nozzle box, return air easily returns to the blower, and the hot air hits the strip evenly,
The return air also does not pull the strip.

According to the heat treatment apparatus of the second aspect, since the interval between the nozzle boxes can be set freely, the interval can be changed according to the band to be processed.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of a heat treatment apparatus showing an embodiment of the present invention is omitted, FIG. 2 is a vertical cross-sectional view of the heat treatment apparatus, and FIG. 3 is the same heat treatment apparatus. 4 is a partial cutaway perspective view of the duct, FIG. 5 is a partial cutaway front view of the duct, and FIG. 6 is a cutaway side view of the duct. FIG. 7 is a bottom view of the duct, FIG. 8 is a perspective view of the duct, FIG. 9 is a side view of the duct of the second embodiment, and FIG. Similarly, it is a transverse cross-sectional view of the duct, FIG. 11 is a perspective view of the closing plate, FIG. 12 is a first embodiment of a conventional heat treatment apparatus, and FIG. 13 is a conventional heat treatment apparatus. It is a cross-sectional view of a second embodiment. [Explanation of symbols] 10 ... Heat treatment apparatus 12 ... Casing 14 ... Insertion port 16 ... Outlet port 18 ... Viewing window 20 ... Fan 22 ... Fan 24 ... Nozzle box 26 ... Nozzle box 28 ... Conveyor 30 ...... Blowout port 32 ...... Connection port 34 ...... Duct 36 ...... Heat exchanger 42 ...... Groove 44 ...... Suspension part 46a ...... Closing plate 46b ...... Closing plate 48 ...... Duct 58 ...... Closing plate

Claims (2)

[Claims] 1. A blower device provided in a casing which is a heat treatment chamber for circulating air, an exhaust port, and air, a heating device for heating the wind from the blower device, and running in the front-back direction of the casing. A plurality of nozzle boxes that extend in the width direction with respect to the belt-like material such as cloth and have an outlet on the surface facing the belt-like material, and a duct that sends hot air from the heating device to the plurality of nozzle boxes. In the heat treatment apparatus, the air blower is arranged at least one of above and below in the widthwise center of the strip, and a plurality of nozzle boxes are arranged at predetermined intervals in the longitudinal direction of the strip. A nozzle connecting port is provided in the widthwise center of the surface of the nozzle box that faces the outlet, and the duct is narrower than the nozzle box widthwise. A heat treatment device that is connected to the connection port of the box. 2. A surface of the duct facing the strip is opened, and a plurality of nozzle boxes are arranged in the opening at predetermined intervals in the longitudinal direction of the strip.
The heat treatment apparatus according to claim 1, wherein an opening of the duct between the adjacent nozzle boxes is closed by a closing plate.