JPH1137519A - Moisture supply control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a moisture supply control device which can supply the object with moisture evenly without fluctuations in the amount of the supplied moisture. SOLUTION: An air heat exchanging member 1 is connected with a mixing member 2, with which a supplying member 3 is connected. Air is heat exchanged to a predetermined temperature by the air heat exchanging member 1. This air is mixed with vapor by the mixing member 2 to generate mixed fluid in a predetermined humidity condition. This mixed fluid is injected to the upward film 4 evenly from the moisture supply hole 29 of the supplying member 3 so as to impart a predetermined moisture to the film 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply control device for supplying a desired amount of water to a material to be treated in various processes such as fiber, paper, chemical, food, electric / electronic, pharmaceutical, and forestry.

For example, to-be-processed materials such as a film in a film manufacturing process and leaf tobacco in a drying process of tobacco are required to maintain a predetermined quality and improve productivity.
It is controlled so that the water supplied to the object is within a predetermined range. Also, in the production process of foods and the like, control of supplied water is performed in order to treat the food without losing the flavor. The control of the feed water has been strictly controlled for its quality in order to further improve the quality of the product and further improve the productivity.

[0003]

2. Description of the Related Art As a conventional water supply control device, for example, in a laminating film joining or laminating process, steam is injected into a film as a supply material to which water is supplied through a valve whose opening is adjusted. A predetermined amount of water has been supplied to the film by passing the film through steam or vaporized from a hot water tank.

[0004]

However, in the above-mentioned conventional apparatus, there is a problem that the supply of water to the material to be supplied cannot be controlled accurately. In other words, in the case of injecting steam through a valve with a predetermined opening degree, if a small amount of water is to be supplied,
The amount of supplied steam, i.e., the amount of supplied water, fluctuates due to fluctuations in the steam pressure or the like. In addition, water cannot be supplied uniformly over the entire surface of a wide and long film using a device that passes through steam on a hot water tank. It is.

[0005] For example, in the laminating film bonding step, if the amount of supplied water fluctuates or becomes non-uniform, the bonding of the film becomes incomplete and peels off.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to control the supply of moisture uniformly and accurately over the entirety of the supplied material without fluctuation in the supply of moisture to the supplied material.

[0007]

Means taken to solve the above-mentioned problem is to supply steam to a material to be supplied with moisture to impart desired moisture to the material to be supplied, and to supply air with a predetermined amount. An air heat exchange member that exchanges heat to a temperature, a mixing member that mixes air and steam heat exchanged by the air heat exchange member, and a water-supplied mixture of air and steam mixed by the mixing member. And a supply member for supplying the supply member.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION By mixing a heat-exchanged air and steam by a mixing member and supplying the mixture from a supply member, even a very small amount of moisture can be supplied with high accuracy, and the steam is used as a mixed fluid with air. In order to supply water, water can be supplied over a wide range and uniformly over the whole of the material to be supplied.

[0009]

EXAMPLE In this example, an example in which a predetermined amount of water is supplied and controlled to the film surface in order to bond and bond a plurality of films will be described. In FIG. 1, an air heat exchange member 1 for heating and cooling air in advance, a mixing member 2 for mixing heat exchanged air and steam, and a mixed fluid are supplied to a film 4 as a water supply target. The water supply control device is constituted by the supply member 3 to be used.

A steam supply pipe 7 provided with a valve 5 and a pressure regulating valve 6 is connected to the air heat exchange member 1. The steam supply pipe 7 is connected to a high-pressure steam source such as a boiler (not shown). A compressed air supply pipe 8 is connected to the air heat exchange member 1. A valve 9 for opening and closing and a valve 1 for adjusting the opening degree are provided in the compressed air supply pipe 8.
0 and the air flow meter 11 are attached. A predetermined flow rate of air supplied from the compressed air supply pipe 8 to the air heat exchange member 1 is heat-exchanged with high-temperature steam from the steam supply pipe 7 inside the heat exchange member 1 to become high-temperature air of a predetermined temperature.

The steam condensed by heating the compressed air in the air heat exchanging member 1 becomes drain and is discharged out of the system from the lower steam trap 12 or the valve 13.

A high-temperature air supply pipe 14 for supplying high-temperature air having a predetermined temperature state to the air heat exchange member 1 to the mixing member 2.
Connect. The high-temperature air supply pipe 14 is provided with a temperature sensor 15 for detecting the air temperature inside the pipe. The temperature sensor 15 is connected to an actuator 16 of the upper valve 5 via a controller (not shown). Temperature sensor 15
The amount of steam supplied to the air heat exchanging member 1 can be adjusted by controlling the opening of the valve 5 based on the detection value from.

The mixing member 2 is a closed container having two upper and lower chambers 17 and 18, and the upper and lower chambers 17 and 18 are connected by an orifice 19 having a small diameter hole. A high-temperature air supply pipe 14 is connected to the upper chamber 17, and a steam pipe 20 branched from the steam supply pipe 7 is connected to the lower chamber 18. A pressure control valve 21 for adjusting the steam pressure and a pressure sensor 22 for detecting the steam pressure are attached to the steam pipe 20. The opening and closing of the valve opening of the pressure control valve 21 is controlled by a detection value from the pressure sensor 22.

In the mixing member 2, a predetermined amount of steam in the lower chamber 18 is supplied to the high-temperature air in the upper chamber 17 from the orifice 19, and the high-temperature air and the steam are mixed to generate humid air having a predetermined humidity. In this case, by adjusting the steam pressure in the lower chamber 18 by the pressure control valve 21, the amount of steam supplied from the orifice 19 to the high-temperature air in the upper chamber 17 can be controlled, and the humidity of the high-temperature air can be appropriately adjusted. can do.

The upper chamber 17 of the mixing member 2 communicates with the supply member 3 through a communication pipe 23. The high-temperature air having a predetermined humidity in the upper chamber 17 is supplied from the communication pipe 23 to the supply member 3. In the present embodiment, the temperature of the air supplied from the high-temperature air supply pipe 14 to the upper chamber 17 can be adjusted in a range of about 40 ° C. to 100 ° C., and the humidity of the air supplied from the communication pipe 23 is set to 0.03 ° C. It can be adjusted in the range of about 0.1 to 0.1 kilograms per kilogram.

A pipe 24 is connected to the lower chamber 18 of the mixing member 2 and a valve 25 for adjusting the opening and a valve 26 for opening and closing are mounted. The opening degree of the opening adjustment valve 25 is finely adjusted to maintain the steam pressure in the lower chamber 18 with high accuracy. In this embodiment, it is desirable to maintain the steam pressure in the lower chamber 18 at about 0.3 kg.

The supply member 3 includes a straight pipe portion 27 connected to the communication pipe 23 and a space 2 serving as an air chamber disposed above the straight pipe portion 27.
8 and a supply port member 30 provided with a plurality of water supply ports 29 above the space 28.

Between the straight pipe part 27 and the space part 28 and the space part 2
8 and the supply port member 30 are communicated with each other through punching metals 31 and 32 provided with a large number of small-diameter through holes. The mixed fluid of air and steam supplied from the communication pipe 23 reaches the supply port member 30 via the straight pipe part 27 and the space part 28. The water supply port 29 has an elongated shape, and a mixed fluid of air and steam having a predetermined humidity is blown upward from the supply port 29, and the surface of the film 4 serving as a water supply target that passes and moves from right to left. It supplies necessary moisture.

An opening / closing valve 3 is provided at the outlet side of the straight pipe portion 27.
3, a mixed fluid discharge pipe 36 is connected via an opening adjustment valve 34 and a flow meter 35. By adjusting the opening degree of the opening adjustment valve 34 to adjust the amount of the mixed fluid discharged to the outside, the straight pipe portion 27, the space portion 28, and the supply port member 3 are adjusted.
By maintaining the mixed fluid pressure within 0 within a predetermined range, the amount of the mixed fluid blown out from the moisture supply port 29 can be maintained within a certain range.

The straight pipe section 27 is provided with a thermo-hygrometer 41 for detecting the temperature and humidity of the internal mixed fluid and a pressure gauge 42 for detecting the pressure. Supply member 3 with thermo-hygrometer 41
The temperature and the humidity of the mixed fluid of the air and the steam inside are detected, and the temperature and the humidity of the mixed fluid are controlled via a controller (not shown). The temperature and humidity of the mixed fluid can be appropriately adjusted by controlling the temperature, flow rate, and steam pressure of the high-temperature air supplied to the mixing member 2.

A pipe 37 is connected to the lower part of the straight pipe section 27, and a pipe 38 is connected to the upper chamber 17 of the mixing member 3, and a steam trap 39 and a valve 40 are attached. In the steam trap 39, the drain as condensed water of the steam generated in the straight pipe portion 27 and the drain generated in the upper chamber 17 of the mixing member 3 are formed.
Each is excluded to the outside.

A predetermined amount of a mixed fluid of air and steam maintained at a predetermined temperature and humidity is sprayed from a plurality of water supply ports 29 of the supply member 3 onto the film 4 which moves and passes thereover, and a desired amount of the fluid is applied to the film 4. Water can be supplied.

In this embodiment, the water supply port 29 has an elongated shape. However, the length and shape of the water supply port 29 can be appropriately changed according to the shape of the material to be supplied with water. Although an example of laminating a film has been described, the present invention can be applied to various other water supply devices.

[0024]

According to the present invention, it is possible to supply a mixed fluid having a predetermined humidity state by mixing air and steam which have been heat-exchanged to a predetermined temperature to a material to be supplied, and the required amount of water is very small. Even if the supply amount is large or the area of the supply target is large, the supply water amount can be supplied uniformly and accurately with no variation.

[Brief description of the drawings]

FIG. 1 is a partial sectional configuration diagram showing an embodiment of a water supply control device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air heat exchange member 2 Mixing member 3 Supply member 4 Film 7 Steam supply pipe 8 Compressed air supply pipe 14 Hot air supply pipe 19 Orifice 21 Pressure control valve 23 Communication pipe 27 Straight pipe section 28 Space section 29 Water supply port

Claims (1)

[Claims] 1. An air heat exchanging member for supplying steam to an object to be supplied with moisture and imparting a desired moisture to the object to be supplied. A mixing member for mixing the heat-exchanged air and steam,
A moisture supply control device, comprising: a supply member that supplies a mixed fluid of air and steam mixed by the mixing member to a moisture supply target.