JPH11120847A - Device for eliminating moisture in surface of wire rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for eliminating moisture in a surface of a wire rod, which can efficiently suck the moisture adhered to the surface of the wire rod for elimination with a constant vacuum pressure at the time of passing the wire rod, to which the moisture is adhered, through inside of an air caliper. SOLUTION: A pressure converter 1 for detecting the vacuum pressure inside of pipeline and for converting the vacuum pressure to the vacuum pressure analog signal 7 for transmission is provided in a pipeline 6 at an intermediate position thereof, and a comparator 3 for receiving the vacuum pressure analog signal 7 transmitted from the pressure converter 1, so as to compare it with the target vacuum pressure analog signal 2 and for transmitting a differential analog signal 7' is connected to the pressure converter 1, and a computing unit 4 for receiving the differential analog signal 7' transmitted from the comparator 3 so as to transmit the inverter output command signal in response to size of the differential analog signal is connected to the comparator 3, and an inverter 5 for transmitting the inverter output on the basis of the inverter output command signal transmitted from the computing unit 4 is connected to the computing unit 4, and the inverter 5 is provided with a transmitting circuit for transmitting the inverter output of the inverter 5 to a driving motor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing water from the surface of a wire. More specifically, the present invention relates to an apparatus for removing water from the surface of a wire, which can effectively remove moisture adhering to the surface of the wire.

[0002]

2. Description of the Related Art In the wire industry, it is often practiced to continuously feed a long wire and continuously wash or cool its surface with water. Naturally, moisture adheres to the surface of the wire immediately after washing or cooling.

[0003] A wire rod having moisture attached to its surface has a discoloration property,
There is a disadvantage that corrosivity is great. In addition, a wire having moisture adhered to its surface has a problem in that the paintability of the paint, the adhesiveness with an adhesive, and the like are deteriorated.

[0004] For this reason, it is necessary to quickly and effectively remove water adhering to the surface of a wire that has been washed or cooled with water.

As a conventional method for removing water from the surface of a wire, the following method is used.

(1) Natural Drying Method This method is a method in which a wire rod with moisture adhering to the surface is left in a factory or the like at room temperature, and the moisture adhering to the surface is naturally dried.

However, this method has a disadvantage that the drying speed of water is extremely slow.

(2) Heat-drying method This method is a method in which a wire having moisture adhering to the surface is placed in a high-temperature drying furnace, and the moisture adhering to the surface is dried at high temperature.

[0009] However, this method has an advantage that the drying speed of moisture is high, but it requires a large drying furnace in which a long wire can be inserted, and furthermore, when the drying temperature is increased, the wire is oxidized and discolored. is there.

(3) Wiping method This method is a method of wiping a wire having moisture adhering to its surface by passing it through a wiping device, for example, a felt wiping device.

However, in this method, moisture is accumulated in the wiping device, and it is impossible to wipe a long wire.

(4) Method of spraying high-pressure gas In this method, a high-pressure gas, for example, high-pressure air is sprayed on a portion through which a wire having moisture adhering to the surface passes, and the moisture adhering to the surface is volatilized in the air. It is.

However, this method can volatilize water quickly, but there is a problem in that volatilization of water becomes incomplete when the feeding speed of the wire is increased.

[0014] Here, when the temperature of the high-pressure gas to be sprayed is increased, the vaporization rate of water can be increased, but in that case, there is a disadvantage that heating energy is required.

(5) Vacuum suction method This method is a method in which a wire having moisture adhering to the surface is passed through a vacuum suction device, and the moisture adhering to the surface is removed by vacuum suction.

This vacuum suction method has the advantage that the moisture of the wire can be removed at a low temperature without any fear of causing oxidative discoloration of the wire.

However, the conventional device for removing water from the surface of a wire is constituted by a vacuum suction blower, an air caliper, a gas / liquid separator, and the like. There was a difficulty with large variations.

That is, in the conventional apparatus for removing water from the surface of a wire, when the water accumulated in the gas-liquid separator is discharged to the outside or the like, the air flows into the air caliper and the vacuum pressure is reduced. There is no function that can quickly return to the original high vacuum pressure when the vacuum pressure drops. For this reason, there has been a problem that the efficiency of removing water from the surface of the wire passing through the air caliper part is significantly reduced.

[0019]

SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and an object of the present invention is to solve the above-mentioned disadvantages of the prior art and to provide a wire rod in which moisture adheres in the air caliper portion. It is an object of the present invention to provide a device for removing moisture from the surface of a wire, which can always efficiently suction and remove moisture adhering to the surface of the wire when a constant pressure is applied to the wire.

[0020]

SUMMARY OF THE INVENTION The gist of the present invention is to detect a vacuum pressure in a pipe at an intermediate position of the pipe, convert the vacuum pressure into a vacuum pressure analog signal, and furthermore, the vacuum pressure analog signal. A pressure transducer capable of transmitting a pressure analog signal, the pressure transducer receiving the vacuum pressure analog signal transmitted by the pressure transducer, and comparing with a target vacuum pressure analog signal to transmit a difference analog signal. And an arithmetic unit capable of receiving the difference analog signal transmitted by the comparator and transmitting an inverter output command signal according to the magnitude of the difference analog signal, and further connecting the arithmetic unit to the comparator. Is connected to an inverter capable of transmitting an inverter output according to the inverter output command signal transmitted by the arithmetic unit, and the inverter is connected to the inverter of the inverter. It is a force to water removal apparatus of the wire surface, characterized by comprising providing a transmitter circuit capable of transmitting to the drive motor.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the apparatus for removing water from the surface of a wire according to the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the apparatus for removing water from the surface of a wire according to the present invention.

In FIG. 1, 1 is a pressure converter, 2 is a target vacuum pressure analog signal, 3 is a comparator, 4 is a calculator, 5 is an inverter, 6 is a pipe, 7 is a vacuum pressure analog signal, and 7 'is a differential analog. Signal, 8 is a blower, 9 is a command signal, 9 'is an inverter output, 10 is a gas / liquid separator, 11 is a water drop inside, 12 is a high pressure air discharge pipe, 13 is a water discharge pipe, 1
4 is a wire and 15 is an air caliper part.

That is, in one embodiment of the apparatus for removing moisture from the surface of a wire according to the present invention, an air caliper section 15 capable of suctioning and removing moisture from the surface of the wire 14 by passing the wire 14, and an air caliper section thereof 15, a blower 8 connected to the pipe 6 and capable of evacuating the inside of the pipe 6 and the air caliper section 15 to a vacuum, and a gas / liquid separator 1 connected to the blower 8.
0, high pressure air discharge pipe 1 connected to the gas / liquid separator 10
2, a separated water discharge pipe 13, a pressure transducer 1 connected to an intermediate position of the pipe 6, a comparator 3 for detecting the pressure of the pressure transducer 1, a computing element 4 for calculating the pressure of the pressure transducer 1,
The operation unit 4 comprises an inverter 5 receiving a command calculated.

Next, these configurations will be further described.

First, the inside of the pipe 6 is evacuated by the blower 8 to be in a vacuum.

The pressure transducer 1 is connected to an intermediate position of the pipe 6.

The pressure converter 1 constantly converts the vacuum pressure in the pipe 6 into a vacuum analog signal 7 and sends the vacuum analog signal 7 to the comparator 3.

The comparator 3 compares the vacuum pressure analog signal 7 received from the pressure transducer 1 with the target vacuum pressure analog signal 2,
The vacuum pressure analog signal 7 and the target vacuum pressure analog signal 2
Is sent to the arithmetic unit 4 as a difference analog signal 7 '.

When the arithmetic unit 4 receives the difference analog signal 7 ', it converts it into a command signal 9, and converts the command signal 9 into an inverter 5
To be sent to

The inverter 5 receives the command signal 9 and converts it into an inverter output 9 '.
To the blower 8.

The blower 8 receives the inverter output 9 'and increases or decreases the rotation speed of the drive motor of the blower 8.

When the analog signal 7 is lower than the target vacuum pressure analog signal 2, the rotation speed of the drive motor of the blower 8 is increased. The rotation speed is equal to the difference between the target vacuum pressure analog signal 2 and the analog signal 7, that is, the difference. The larger the analog signal 7 ', the larger it is.

In the present invention, the switching between the drainage operation and the vacuum suction operation of the gas / liquid separator 10 needs to be performed with good timing so as not to mix with the outside atmospheric pressure. Therefore, in the present invention, when water is stored in the gas / liquid separator 10, a valve (not shown) provided on the water discharge pipe 13 side is shut off, and conversely, water is discharged from the water discharge pipe 13 side of the gas / liquid separator 10. At times, the suction path of the blower 8 is shut off, and these operations are performed alternately and automatically.
By doing so, in one embodiment of the apparatus for removing water from the surface of a wire according to the present invention, the atmospheric pressure and the vacuum pressure in the pipe 6 and the air caliper section 15 can be effectively cut off, and thereby the pipe 6 and the The vacuum pressure in the air caliper section 15 can be kept constant.

When switching from the operation of discharging water from the water discharge pipe 13 side of the gas / liquid separator 10 to the suction operation of the blower 8, the inside of the pipe 6 and the air caliper 1
Although the vacuum pressure in the tube 5 instantaneously drops and approaches the atmospheric pressure, the vacuum pressure in the pipe 6 and the air caliper 15 can always be kept constant as described above. In the embodiment of the apparatus for removing moisture from the surface of a wire rod according to the present invention, the vacuum pressure in the pipe 6 and the air caliper section 15 greatly fluctuates due to the switching operation between the drainage operation and the vacuum suction operation and other disturbances. Even if this is done, the feedback pressure is rapidly controlled, so that the vacuum pressure in the pipe 6 and the air caliper section 15 can always be kept constant.

[0036]

According to the apparatus for removing water from the surface of a wire rod according to the present invention, the vacuum pressure in the pipe and the air caliper part is rapidly reduced due to switching between the drainage operation and the vacuum suction operation of the gas / liquid separator and other disturbances. Even if it does, the number of revolutions of the blower drive motor can be quickly increased according to the degree of vacuum pressure drop, thereby instantaneously returning the vacuum pressure in the piping and air caliper to the original high vacuum pressure And is industrially useful.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a device for removing water from a wire rod surface according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pressure converter 2 Target vacuum pressure analog signal 3 Comparator 4 Computing unit 5 Inverter 6 Piping 7 Vacuum pressure analog signal 7 'Difference analog signal 8 Blower 9 Command signal 9' Inverter output 10 Gas / liquid separator 11 Internal pool water drop 12 High pressure air discharge pipe 13 Water discharge pipe 14 Wire rod 15 Air caliper section

Claims (1)

[Claims] 1. An air caliper section capable of evacuating the inside and allowing a wire to pass through the inside, a pipe connected to the air caliper section, and a drive motor connected to the pipe and In the apparatus for removing moisture on the surface of a wire rod comprising a vacuum suction blower driven by a vacuum suction and a gas-liquid separator connected to the vacuum suction blower, a vacuum pressure in the pipe is detected at an intermediate position of the pipe. A pressure transducer capable of converting the vacuum pressure into a vacuum pressure analog signal and transmitting the vacuum pressure analog signal, the pressure transducer receiving the vacuum pressure analog signal transmitted by the pressure transducer; A comparator capable of transmitting the difference analog signal in comparison with the target vacuum pressure analog signal is connected, and the comparator receives the difference analog signal transmitted by the comparator and determines whether the difference analog signal is larger or smaller. Connected to a computing unit capable of transmitting the same inverter output command signal, connected to the computing unit is connected an inverter capable of transmitting an inverter output according to the inverter output command signal transmitted by the computing unit, and the inverter is connected to an inverter output of the inverter. And a transmission circuit capable of transmitting the water to the drive motor.