JPS646301B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves defibrating waste of pine or sheet-like materials made of inorganic fibers such as glass fibers, rock wool, asbestos fibers, etc., and mixing the waste when producing pine or sheet-like materials. This relates to a defibration supply device for reuse, and its purpose is to defibrate the aforementioned waste and to enable it to continuously supply approximately a constant amount of the waste.

When manufacturing pine or sheet-like products made of inorganic fibers as described above, the scraps that are regularly generated, such as ears, are crushed with a crusher, and continuously supplied to the new fiber collection section with a blower. However, scraps that are irregularly generated, such as defective products caused by problems during the manufacturing process, are continuously recycled during the manufacturing process of mats or sheet products that require uniform quality. Since it cannot be supplied to other countries, it has to be disposed of or redirected to completely different uses.

The present invention provides a defibration supply device having the configuration described in the claims, which enables to remove waste such as inorganic fiber matte that is irregularly generated, such as defective products caused by troubles during the manufacturing process. By continuously supplying a roughly constant amount of inorganic fibers to the new fiber collecting section, waste fibers can be reused and mats or sheets made of inorganic fibers of uniform quality can be manufactured at all times. This is what I did.

The configuration of the illustrated example will be explained below.

In the figure, hopper 1 for receiving inorganic fiber waste
A lower hopper 3 whose cross-sectional area decreases as it goes downward is integrally connected to the lower part of an upper hopper 2 in the shape of a rectangular parallelepiped, and is fixed to a frame 4.

A waste intake port 5 is provided on the side of the upper hopper 2 to receive the waste of inorganic fiber products that have been previously crushed into small pieces by a crusher (not shown) together with the pressurized air flow. A discharge port 7 for pressurized air is opened in the upper part of the hopper 2 through a screen 6 stretched over the entire cross section.

Further, a beater 8 is disposed approximately in the center of the lower hopper 3 mentioned above. The beater 8 in the illustrated example is
Although the structure is such that two blades 12 are fixed to a shaft 11 that is rotated in the direction of arrow A by a motor 9 via a chain 10, the structure is not limited to this.

In addition, a screw feeder 14 having a feeding function in the direction of arrow B is horizontally arranged on the lower bottom part 13 of the lower hopper 3, and a drive force from a drive source (not shown) is transferred to a reducer 15 and a shaft 16. , wheels 17, 18, and belt 19, and is configured to be rotated at a predetermined number of rotations.

At a lateral position of the hopper 1, a circulation chamber 20 for a group of defibrated inorganic fibers that are defibrated by the aforementioned beater 8 and continuously fed out in approximately constant amounts by a screw feeder 14 is arranged adjacent to the chamber 20.

This circulation chamber 20 is composed of an upper chamber 21 in the shape of a rectangular parallelepiped, and a lower chamber 22 whose cross-sectional area is gradually reduced in the shape of an inverted pyramid. Screw part 2 on the feeding side of 14
3 has been extended and placed. This screw portion 23 extends from the lower hopper 3 to the lower chamber 22 through the aperture 25 of the partition wall 24 between the hopper 1 and the circulation chamber 20, and always has a substantially constant amount of defibrated inorganic fibers. The group is configured to be fed from the hopper 1 side to the circulation chamber 20 side.

Below the location of the screw part 23 of the screw feeder 14 in the lower chamber 22, there is a lower circulation duct 26 extending perpendicularly to the lateral direction.
are connected and opened.

One end of the lower circulation duct 26 is connected to an intake port 28 of a circulation fan 27, and the other end of the lower circulation duct 26 is an outside air intake port 30 having an opening/closing damper 29.

Further, a portion of the lower circulation duct 26 facing the above-mentioned screw portion 23 is a sloped portion 31 having a downward slope toward the circulation fan 27 side.

One end of an upper circulation duct 32 is connected and opened to the side of the upper chamber 21 of the circulation chamber 20 , and the other end of the duct 32 is communicated with an exhaust port 33 of the circulation fan 27 .

In addition, the lower chamber 22 of the circulation chamber 20
A discharge port 35 for defibrated fibers is opened above the inclined side wall 34 .

The above-mentioned circulation fan 27 is rotated in the direction of arrow C via a motor 36, a pulley 37, and a belt 38, and is rotated in the direction of arrow C through a motor 36, a pulley 37, and a belt 38.
The defibrated inorganic fibers sent into the duct can be conveyed in the direction of the arrow 2 through the lower circulation duct 26 and the upper circulation duct 32 on an air flow.

Upper chamber 21 of the above-mentioned circulation chamber 20
Both the cross-sectional area and the vertical cross-sectional area of the upper circulation duct 32 are significantly larger than the opening area of the portion where the upper circulation duct 32 is connected to the upper chamber 21 and opened. Therefore, due to the action of the circulation fan 27, the inorganic fibers sent into the upper chamber 21 through the upper circulation duct 32 are suddenly discharged into the wide upper chamber 21, and are scattered as the air diffuses. The fibers are defibrated, fall to the lower chamber 22 side, and are discharged along with the air flow blown out from the discharge port 35 on the side surface 34 thereof.

The operation of the defibration supply device for inorganic fiber waste having the above structure is as follows.

The scraps of inorganic fiber pine or sheet materials that have been crushed into pieces by a crusher (not shown) enter the upper hopper 2 from the vehicle intake port 5 together with the pressurized air, and the compressed air enters the upper hopper 2. The stream passes through the screen 6 and is discharged from the exhaust port 7, and the waste particles fall into the lower hopper 3 where they are beaten and defibrated by the beater 8.

The defibrated inorganic fibers accumulated at the bottom of the lower hopper 3 are also subjected to the defibrating action by the rotation of the screw feeder 14, and the inorganic fibers are exposed to the fenestration 2 of the partition wall 24.
5, and is fed into the lower part of the lower chamber 22 of the circulation chamber 20 in a generally constant amount, and falls onto the slope part 31 of the lower circulation duct 26, and is sucked together with the air flow by the action of the circulation fan 27. After being defibrated by the airfoils, the fibers ride on the airflow and rise in the upper circulation duct 32 as shown by arrow D, and are discharged into the upper chamber 21 of the circulation chamber 20.

The amount of air sucked by the circulation fan 27 is divided into the circulation chamber 20 and the upper circulation duct 32.
, the air circulating inside the lower circulation duct 26 , and the air sucked in from the outside air intake port 30 . It is adjusted accordingly.

The defibrated inorganic fibers released into the upper chamber 21 are further defibrated by air diffusion,
The airflow blown into the upper chamber 21 through the upper circulation duct 32 is discharged along with the airflow blown out from the discharge port 35.

The insufficiently defibrated fiber mass among the inorganic fibers discharged from the upper circulation duct 32 into the upper chamber 21 falls below the lower chamber 22 without riding on the airflow blown out from the discharge port 35, and is removed from the screw. While being subjected to the defibration action by the screw of the screw portion 23 of the feeder 14 and the blades of the circulation fan 27, the fibers are again raised inside the upper circulation duct 32 and the upper chamber 21 together with other defibrated inorganic fibers is It is something that is released inward.

In the above-mentioned embodiment, the fine pieces pre-pulverized by a crusher (not shown) are fed into the upper hopper 2 from the waste intake port 5 by a pressurized air flow, but the pieces are fed manually into the upper hopper 2. , inorganic fiber waste may be directly thrown into the upper hopper.

Also, if you set Hopper 1 to a large capacity,
Even if a large number of defective molded products occur irregularly, it is possible to store them and feed them out in fixed quantities by the action of the screw feeder 14.

FIG. 4 is a schematic side view showing a mode in which the defibrated inorganic fibers discharged from the discharge port 35 as described above are mixed into new fibers and reused. The glass primary filament 101 spun from the melting furnace 100 constituting the fine fiberization device is
High-temperature, high-speed hot air flow 1 ejected from the combustion furnace 102
A binder is sprayed and supplied from a spray 104 to the glass fine fibers introduced into the glass tube 103 and transported by the hot air flow, and the fine fibers to which the binder has been supplied are passed through an inorganic fiber collection device. It is collected by collection nets 107 and 108 which circulate endlessly while being subjected to the suction action of the vacuum suction ports 105 and 106, and is collected by a predetermined mat or sheet material 1.
It was collected as 09.

The defibrated inorganic fibers discharged from the discharge port 35 of the apparatus of the present invention are guided by the supply cylinder 110 and supplied into the flow of fine glass fibers that are carried by the hot air flow. Ru.

The opening 111 of the supply cylinder 110 is opened immediately after the spray 104 so that the binder efficiently adheres to the defibrated inorganic fiber group and is uniformly dispersed and bonded into the new inorganic fiber mat. It is preferable to open and install the net downward, and the new inorganic fibers and the defibrated inorganic fibers are mixed and collected by the collecting net 108. The mixing rate of the defibrated inorganic fibers into the new inorganic fibers is said to be limited to about 15% of the amount of new fibers.

The defibration supply device according to the present invention has the configuration and operation described above, and is capable of handling not only the constantly generated debris during the production of mats and sheet-like products made of inorganic fibers, but also the waste that is generated during the production process. We also handle scraps that occur irregularly, such as defective products caused by problems.
The fibers are defibrated and continuously supplied in approximately constant amounts to the new fiber collecting section, allowing for reuse and the production of mats or sheets of uniform quality.

In addition, in the device of the present invention, the beater, screw feeder, and circulation fan all contribute to defibration, which can further improve the defibration effect. The fiber mass can be defibrated by repeatedly circulating within the circulation chamber, and the inorganic fibers discharged from the upper circulation duct to the upper part of the circulation chamber can be defibrated into finer particles by air diffusion. It also has the effect of making it look like something.

In addition, the inorganic fibers in the hopper are fed into the circulation chamber in roughly constant amounts by the screw feeder, so even if a large amount of waste is input and stored in the hopper, the inorganic fibers are discharged and supplied into the circulation chamber. It also has the effect of keeping the amount of spun inorganic fibers substantially constant at all times.

[Brief explanation of drawings]

Fig. 1 is a front view of an example of implementation of the device according to the present invention, Fig. 2 is a side view, Fig. 3 is a cross-sectional view taken along the line - - in Fig. 1, and Fig. 4 is reuse of defibrated fibers. 1 is a schematic side view, partially in cross section, of an outline of a glass fiber mat manufacturing apparatus showing an embodiment. 1: Hopper, 8: Beater, 13: Lower bottom,
14: Screw feeder, 20: Circulation chamber, 23: Screw part, 26: Lower circulation duct, 27: Circulation fan, 28: Intake port, 29:
Opening/closing damper, 30: Outside air intake, 32: Upper circulation duct, 33: Exhaust port, 34: Side wall, 35: Discharge port, 100: Melting furnace of fiberizing device, 102:
Combustion furnace of fibrillation device, 105, 106: Vacuum suction port of inorganic fiber collection device, 107, 108: Collection net of inorganic fiber collection device, 110: Supply tube, 1
11: Opening.

Claims (1)

[Claims] 1. At a horizontal position of the hopper for receiving inorganic fiber waste,
A circulation chamber for a group of defibrated inorganic fibers is arranged adjacent to each other, and a beater is located approximately in the center of the hopper.
Further, a screw feeder is arranged at the bottom of the hopper, and the screw part on the sending side of the screw feeder is arranged at the lower part of the circulation chamber, and the screw feeder is arranged at the position of the circulation chamber. At the bottom, a lower circulation duct that communicates with the intake port of the circulation fan is connected and opened.
The upper circulation duct connected to and opened at the upper part of the circulation chamber is connected to the exhaust port of the circulation fan, and the side wall of the circulation chamber has an outlet for disintegrating fibers. An outside air intake port having an opening/closing damper is provided, and an opening of the supply cylinder communicating with the discharge port is opened between the inorganic fiber fibrillation device and the inorganic fiber collection device. Defibration supply device for inorganic fiber waste. 2. The circulation chamber is characterized in that its upper portion has a significantly wider cross-sectional area than the opening area of the upper circulation duct, and its cross-sectional area gradually decreases downward in a substantially inverted cone shape. An apparatus for defibrating and supplying inorganic fiber waste according to claim 1.