JPH0648764A - Method for controlling spray level of cotton collecting oil - Google Patents

Abstract

PURPOSE:To improve cotton collecting efficiency by controlling the spray level of a cotton collecting oil according to the electric current level in a wheel driving motor. CONSTITUTION:Blast furnace molten slag is regulated in its components through addition of a relevant material, and regulated in temperature. A drafts making feedstock thus prepared is dropped onto the No.1 wheel 5a of a spinner to alter the direction of the molten slag flow to transfer the slag onto the No.2 wheel 5b, and the slag is put to drafts making by revolving the wheel 5b and blown off by an air jet from a blower 7 around the wheel 5b and thus collected in a relevant chamber 2. The molten slag unconverted to cotton on the wheel 5b is put to drafts making by the No.3 and No.4 wheels 5c, 5d. In this case, the spray level of an cotton collecting oil blown from nozzles around the blower outlet 7 is controlled according to the electric current level in a driving motor for the respective wheels 5a to 5d of the spinner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the amount of sprayed cotton collecting oil, and more specifically, to a cotton collector used for producing inorganic short fibers by melt spinning a slag by a rotor system. A cotton-collecting oil that can improve the cotton-making efficiency by blowing the oil from the side of the blow-off duct to collect the cotton and controlling the spray amount of the cotton-collecting oil according to the current amount of the wheel drive motor. It relates to a method of controlling the amount of spray.

[0002]

2. Description of the Related Art Conventionally, as a method for producing inorganic short fibers such as rock wool and slag wool, a rotor method or a multi-rotor method using a plurality of rotors is known.

In these systems, the molten slag heated to about 1400 ° C. is dropped onto the rotating surface of a spinner wheel rotating at a high speed to collide with the molten slag, which is slightly behind the spinner wheel, and the rotating surface is continuous. Blower at a position where it flexes around
By providing a high speed air slit, that is, a high speed air flow blown from this slit toward the rotating surface of the spinner wheel, the air is blown forward by
For example, it forms a cotton-like inorganic short fiber of about 10 mm. The inorganic short fibers thus produced by cotton are used as raw materials for products such as boards and felts. In order to facilitate the production of these products and to impart desired characteristics to the quality of the products, processing liquids such as binders and surface treatment agents are applied.

The binder is for improving the mutual binding property of the inorganic short fibers, and the surface treating agent is for imparting water resistance by rendering the surface of the inorganic short fibers water-repellent.

In order to apply such a working fluid, an appropriate space is provided outside the suction port for high-speed air flow provided at a position slightly rearward of the spinner wheel and at a position where it continuously encircles the surface of rotation. A plurality of working fluid discharge nozzles are arranged, and a working fluid such as a binder and a surface treatment agent is sprayed from these discharge nozzles at a high pressure of ²⁰ to 30 kg / cm ² toward the inorganic short fibers in the melt spinning to form an inorganic material. The short fibers are sprayed from around them. However, such a coating method has a limit in the number of the working fluid discharge nozzles arranged outside the slits of the high-speed air flow, and it has been difficult to apply the working fluid to the inorganic short fibers without uneven adhesion.

Further, in Japanese Patent Laid-Open No. 59-102830, when the working liquid is applied to the inorganic short fibers in the melt spinning by the rotor system, the working liquid is guided to the center of the front surface of the spinner foil. There is a method in which this working liquid is radially sprayed by the centrifugal force generated by the rotation of a spinner foil and sprayed from the inside to the inorganic short fibers in the melt spinning.

[0007] This method is an excellent method in which an excessive amount of the working liquid is supplied to the discharge nozzle in order to prevent the product strength from being lowered, and the working liquid can be evenly applied to the inorganic short fibers. Since a large amount of working fluid is used, resources are wasted and it is uneconomical.

[0008]

SUMMARY OF THE INVENTION That is, the present invention aims to solve the above-mentioned problems. Specifically, the injection amount of the cotton collecting oil is set to the driving mode of each foil with respect to the produced inorganic short fibers.
It is an object of the present invention to provide a method for controlling the amount of cotton-collecting oil sprayed so that the amount of sprayed cotton oil is sprayed according to the amount of electric current.

[0009]

According to the present invention, when producing inorganic short fibers by a rotor system, the molten slag is dropped on each wheel of a spinner rotating at a high speed, and the centrifugal force of each wheel is applied. While producing cotton, blown off by the high-speed air flow blown from the periphery of the foil, spray cotton collecting oil from each nozzle installed at the position surrounding the outlet of the high-speed air flow, and spin this amount. It is characterized in that the control is performed according to the current amount of the negative drive motor.

The structure and the operation of the means of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an explanatory view showing an example of an apparatus used for carrying out the present invention, FIG. 2 is an explanatory view seen from the front side of the foil of FIG. 1, and FIG. 3 is NO of FIG. ． 2 is a graph showing the relationship between the motor current amount of two wheels and the amount of cotton making, and FIG. 3 is a graph showing the relationship between the amount of motor current and the amount of cotton making for 3 foils, and FIG. Four
It is a graph which shows the relationship between the motor current amount of a foil, and the amount of cotton making. In the figure, reference numeral 1 is a spinner, 2 is a cotton collecting chamber, 3 is a cotton collecting conveyor, 4 is cotton, 5a, 5b, 5c and 5d are wheels, 6 is a nozzle, and 7 is a blower outlet.

First, as shown in FIG. 1, the apparatus used in the present invention comprises a spinner-1 and a cotton collection chamber 2. The raw material for making cotton is obtained by adding a component adjusting material to a blast furnace slag, adjusting the components in a primary electric furnace, and then adjusting the temperature in a secondary electric furnace. These ingredients and the temperature-controlled raw material are dripped on each wheel of the spinner through a supply gutter (not shown), and are made into cotton by centrifugal force during rotation of each foil, and the cotton is blown to a negative pressure state. The cotton is collected and discharged on the cotton collecting conveyor in the cotton collecting chamber. More specifically, each wheel of the spinner is, for example, as shown in FIG. 1-NO. 4 foils 5a, 5
It consists of b, 5c and 5d, and the slag is first N
O. No. 1 foil 5a, the flow direction of the molten slag is changed thereby, and NO. The molten slag was transferred onto the 2 foil 5b, and the NO. The slag was cotton-made by the rotation of the 2 foil 5b, and the No. It is blown away by the high-speed airflow blown from the blower outlet 7 around the two wheels 5b,
As described above, the cotton collection room 2 is reached. At this time, if the cotton collecting oil is blown out from the nozzle around the blower outlet 7, the cotton collecting effect is further improved.

Incidentally, NO. 2 foil 5b and the unspun cotton slag is NO. 3 wheels 5c, and NO. 3 foil 5c and unspun cotton slag is NO. Moving to 4 foil 5d, these complete the cottonmaking of all the slag.

At this time, each foil 5b, 5c and 5d
In this case, when the amount of cotton adhering to the surrounding area increases, as shown in FIGS. 3, 4 and 5, each foil 5
The current amounts of the drive motors b, 5c and 5d are proportionally increased. Therefore, each current amount is NO. 2, NO. 3,
NO. Although it is adjusted so that cotton is completely finished in each of the foils 5b, 5c and 5d of No. 4, the current of each foil indicates a load, that is, the amount of cotton. Therefore, by controlling the spraying amount of the cottonmaking oil on each wheel according to the current amount of the drive motor of each wheel, the cottonmaking efficiency can be improved.

The cotton-collecting oil is preferably of the emulsion type, for example, trade name "Marlex (EJ75 / 148)" manufactured by Mobile Oil Co., Ltd.

Next, the characteristics of the EJ75 / 148 and the method of using the EJ75 / 148 will be described.

Characteristic 1) It can be easily emulsified. EJ75 / 148 can be easily emulsified by slowly adding it to water and stirring lightly. Further, since this product itself is a stock solution containing no water, the storage and handling of the product need not be as detailed as the emulsion type product. 2) Excellent emulsion stability. Since EJ75 / 148 has very good stability even after being emulsified, it can be evenly adhered to glass wool and rock wool. 3) It has good compatibility with the resin binder. Since the compatibility with the binder is good, it is possible to improve the dispersibility of the binder and contribute to uniform adhesion and stabilization. 4) The flash point is high and there is no risk of fire. The EJ75 / 148 product itself has a very high flash point of 280 ° C, so there is no risk of fire and it can be used safely. In addition, the nonflammability of the wool is not impaired. 5) Excellent dustproof effect. Since high viscosity oil is used as a raw material, it exhibits excellent dustproof effect due to its adhesiveness. As a result, the texture of the line is good and it has a soft texture.

Method of use: Pour water into the tank, gradually add EJ75 / 148, stir lightly to make a 1: 1 emulsion, and add this to the already prepared tank of resin binder solution while stirring. The mixed solution may be sprayed on cotton.

[0019]

EXAMPLE Cotton was made using the apparatus having four foils shown in FIGS. The rotation speed of each foil used during cottonmaking was 4000 to 6000 rpm / min, and the centrifugal force was used for cottonmaking. The blower beside the spinner foil was used.
Cotton was collected in the cotton collecting chamber by off-air. In this case, in order to collect the cotton, the spray amount of the cotton collecting oil is controlled from the side of the blow-off duct according to the current amount determined by A, B and C of each foil as shown in FIGS. 3, 4 and 5. Then the cotton production efficiency was improved. The cotton-collecting oil has a ratio of emulsion oil to water of 1 :.
No. 11, the cotton production rate was NO. 15% for 2 wheels, NO. 50% for 3 wheels, NO. 3 in 4 wheels
It was 5%.

[0020]

As described in detail above, the present invention is
When producing inorganic short fibers by the rotor system, the molten slag is dripped onto each foil of the spinner rotating at high speed, and the cotton is spun by the centrifugal force of each of these foils, while being blown out from the periphery of the foil. The air is blown off by the high-speed air stream, and the cotton-collecting oil is sprayed from each nozzle provided at the position surrounding the outlet of the high-speed air stream, and the spray amount is adjusted according to the current amount of the drive motor of the spinner. -It is characterized by

According to the present invention, the spraying amount of the cotton-collecting oil is changed according to the current amount of each foil, so that the cotton-making efficiency can be remarkably improved. Further, it is an economically superior method because the cotton-collecting oil can be used efficiently.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of an apparatus used for carrying out the present invention.

FIG. 2 is an explanatory view seen from the front side of the foil of FIG.

3 is a schematic diagram of NO. It is a graph which shows the relationship between the motor current amount of 2 foils, and the amount of cotton making.

4 is a schematic diagram of NO. It is a graph which shows the relationship between the motor current amount of 3 foils, and the amount of cotton making.

5 is a schematic diagram of NO. It is a graph which shows the relationship between the motor current amount of 4 foils, and the amount of cotton making.

[Explanation of symbols]

 1 Spinner 2 Cotton collection chamber 3 Cotton conveyor 4 Cotton 5a foil 5b foil 5c foil 5d foil 6 nozzle 7 blower outlet

Claims (1)

[Claims] 1. When producing inorganic short fibers by a rotor system, the molten slag is dropped on each foil of a spinner rotating at a high speed, and cotton is produced by centrifugal force of each of these foils. Along with being blown off by the high-speed air stream blown from the surroundings, the cotton collecting oil is sprayed from each nozzle provided at a position surrounding the outlet of the high-speed air stream, and the spray amount is adjusted by the drive motor of the spinner. Control of the amount of cotton oil sprayed, characterized in that it is controlled according to the current amount of
Le way.