JPS58109666A - Apparatus for opening and supplying inorganic fiber trash - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention involves defibrating the waste of mats or sheets made of inorganic fibers such as glass fibers, rock wool, asbestos fibers, etc., and preventing the waste from being mixed in when producing the mat or sheet. , relates to a defibration supply device for reuse, and its purpose is to defibrate the aforementioned waste and to be able to continuously supply it in approximately constant amounts.

When manufacturing mats or sheet-like textiles made of inorganic fibers as described above, scraps that are regularly generated such as ears are crushed by a crusher, and continuously supplied to the new fiber collection part by a blower. Waste that is reused but irregularly generated, such as defective products caused by problems during the manufacturing process, is continuously supplied to the mat or sheet manufacturing process that requires uniform quality. Since it was not possible to do so, they were either disposed of or redirected to a completely different purpose.

By using a defibration supply device having the configuration described in the claims, the present invention can also eliminate waste materials such as inorganic fiber mats that are irregularly generated, such as defective products caused by troubles during the manufacturing process. By continuously supplying a roughly constant amount of new fibers to the collecting section, waste fibers can be reused and mats or sheets made of inorganic fibers of uniform quality can be manufactured at all times. It is something.

The configuration of the illustrated example will be described below.

In the figure, a hot spring 1 for receiving inorganic fiber waste has a lower hot spring 3 whose cross-sectional area decreases as it goes downwards, which is integrally connected to the lower part of a rectangular parallelepiped-shaped upper hopper 2. It is permanently installed.

A waste intake port 5 is provided on the side of the upper hopper 2 to receive waste of inorganic fiber products that have been previously ground into small pieces by a crusher (not shown) together with a pressurized air flow. A discharge lower for pressurized air is opened in the upper part of the hot spring 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 illustrated beater 8 has two shafts 11 that are rotated in the direction of the arrow by a motor 9 via a chino 10.
Although the structure is such that the blades 12 are fixed, the structure is not limited to this.

Further, a screw feeder 14 having a feeding function in the direction of the arrow (b) is horizontally arranged in the lower bottom part 13 of the lower impeller 3, and receives driving force from a drive source (not shown) to a reducer 15. Axis 16° Wheel 17.1B, Belt 1
9, and is configured to be rotated at a predetermined number of rotations.

At a horizontal position of the hopper 1, there is a circulation chamber 2 for a group of defibrated inorganic fibers that are defibrated by the beater 8 and continuously fed out in approximately constant amounts by the screw feeder 14.
0 are placed adjacent to each other.

This circulation chamber 20 has a rectangular parallelepiped-shaped upper chamber 2.
1, and a lower chamber 22 whose cross-sectional area is gradually reduced in the shape of an inverted cone, and a portion 23 of the screw on the feeding side of the screw feeder 14 is extended at the bottom of the lower chamber 22. , is located. This screw portion 23 connects the hopper +-1 and the circulation chamber 20.
It extends from the lower hopper 3 to the lower chamber 22 through the fenestration 25 of the partition wall 24, and a substantially constant amount of the defibrated inorganic fibers always flows from the hopper 1 side to the circulation chamber 20. It is configured to be pushed into the side.

A lower circulation duct 26 is connected and opened below the position of the screw portion 23 of the screw feeder 14 in the lower chamber 22, extending orthogonally to the lateral direction.

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

In addition, the portion of the lower circulation duct 26 facing the aforementioned screw portion 23 is a sloped portion 31 that slopes downward toward the circulation fan 2γ 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 duct 3
The other end of the fan 2 is connected to an exhaust port 33 of the circulation fan 27 .

Further, a defibrated fiber discharge port 35 is opened above the inclined side wall 34 of the lower chamber 22 of the circulation chamber 20.

The above-mentioned circulation fan 2γ is powered by a motor 36. Boo! J-37
, the group of defibrated inorganic fibers rotated in the direction of arrow (C) via the belt 38 and fed into the lower chamber 22 of the circulation chamber 20 by the screw portion 23 of the screw feeder 14 into the lower circulation duct. 26 and the upper circulation duct 32 in the direction of the arrow), it can be carried along with the air flow.

The upper chamber 21 of the circulation chamber 20 described above has both a cross-sectional area and a longitudinal cross-sectional area that are significantly wider than the opening area of the portion where the upper circulation duct 32 is connected to the upper chamber 21 and opened. . For this reason, circulation fan 2
1, the inorganic fibers sent into the upper chamber 21 via 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 toward the lower chamber 22, 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 mats or sheets are crushed into pieces by a crusher (not shown) and are discharged from the exhaust port 1, and the scraps fall into the lower hopper 3. , beaten with a beater 8 and defibrated.

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, pass through the fenestrations 25 of the partition wall 24, and are transported in approximately constant amounts to the circulation chamber 20. It is fed into the lower part of the lower chamber 22, falls on the slope part 31 of the lower circulation duct 26, is sucked together with the airflow by the action of the circulation fan 270, and is also subjected to the defibration action by the blades of the fan 27. Thereafter, riding on the air flow, it rises inside the upper circulation duct 32 as shown by the arrow) and is discharged into the upper chamber 21 of the circulation chamber 20.

The amount of air sucked by the circulation fan 2γ is the sum of the air circulating inside the circulation chicken bar 20, the upper circulation duct 32, and the lower circulation duct 26, and the air sucked from the outside air intake port 30. The amount of air taken in from the outside air intake port 30 is adjusted by the opening degree of the opening/closing damper 29.

The defibrated inorganic fibers released into the upper chamber 21 are further defibrated by air diffusion, and are then released into the upper chamber 2.
The airflow blown into the interior of the air conditioner 1 through the upper circulation duct 32 is carried along with the airflow blown out from the discharge port 35 and discharged.

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

In the above-mentioned embodiment, the fine pieces pre-pulverized by a crusher (not shown) are supplied to the right side of the hopper 1 from the waste intake port 5 by a pressurized air flow. The scraps may be directly thrown into the upper hopper.

In addition, if the hopper 1 is set to have a large capacity, even if a large amount of defective molded products occur irregularly, it can be accommodated and fed 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, and shows the melting furnace 100. The glass filaments 101 spun from the glass fibers are introduced into a high-temperature, high-velocity hot air flow 103 ejected from a combustion furnace 102 and are made into fine fibers. Then, the binder is sprayed and supplied from the sprayer 104, and the fine fibers supplied with the binder are passed through the vacuum suction port 10.
The defibrated inorganic fibers are collected by the collecting nets 107, 108 which are subjected to the suction action of 5, 106 and are circulated endlessly, and are discharged from the discharge port 35 of the device of the present invention into a predetermined mat or sheet. The new inorganic fibers are mixed with the defibrated inorganic fibers, and are fed into the flow of fine glass fibers that are guided by the supply cylinder 110 and carried by the hot air flow, and the new inorganic fibers and the defibrated inorganic fibers are mixed and collected in the collection net 108. It is collected by. The mixing rate of the defibrated inorganic fibers into the new inorganic fibers is said to be limited to about 15% of the desired amount of fibers.

The defibration supply device according to the present invention has the above-described configuration 2, and is capable of handling not only waste that is constantly generated during the production of inorganic fiber mats and sheet-like products, but also waste during the production process. Even waste material that is irregularly generated, such as defective products caused by problems, can be defibrated and continuously supplied in roughly constant amounts to the collection section of the new m-fiber, making it possible to reuse it and maintain uniform quality. It has the effect of producing a mat or sheet-like product.

In addition, in the apparatus of the present invention, the beater, screw feeder, and circulation fan all contribute to defibration, and the defibration effect can be further improved. The lumps can be defibrated by repeatedly circulating in the circulation chamber, and the inorganic fibers released from the upper circulation duct into the upper part of the circulation chamber can be defibrated into finer particles by air diffusion. It also has a soaking effect.

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 defibrated inorganic fibers that are discharged and supplied are It also has the effect of keeping the amount of fiber always approximately constant.

[Brief explanation of drawings]

FIG. 1 is a front view of one example of implementation of the device according to the present invention, FIG.
The figure is a side view, Figure 3 is a sectional view taken along the line ■-1I in Figure 1, and Figure 4 is a sectional view taken along line ■-1I in Figure 1.
The figure is a schematic side view showing a partial cross-section of a glass fiber mat manufacturing apparatus showing a mode of reusing defibrated fibers. 01: Hopper, 8: Beater, 13: Lower bottom, 1
4 Niscrew feeder, 20: Circulation chamber, 2
3 Part of Niscrew, 26: Lower circulation duct, 2T: Circulation fan, 2B: Inlet, 29: Opening/closing damper, 30:
Outside air intake, 32: Upper circulation duct, 33: Exhaust port, 3
4: side wall, 35: outlet. Patent applicant Paramount Glass Industries Co., Ltd. Attorney: Osamu Kawa, Yoshito, Tatsuya Fuji

Claims (2)

[Claims] (1) Next to the hopper for receiving inorganic fiber waste,
A circulation chamber for the defibrated inorganic fibers is arranged adjacent to it, a beater is arranged approximately in the middle of the hopper, a screw feeder is arranged at the bottom of the hopper, and a part of the screw on the delivery side of the screw feeder is arranged. , is arranged at the bottom of the circulation chamber, and below the screw feeder installation position of the circulation chamber, a lower circulation duct that communicates with the intake port of the circulation fan is connected and opened, and a lower circulation duct is connected and opened at the top of the circulation chamber. The upper circulation duct is connected to the exhaust port of the circulation fan, and a defibrated fiber discharge port is opened in the side wall of the circulation chamber, and the lower circulation duct has an outside air intake port with an opening/closing damper. What is claimed is: 1. A defibration supply device for inorganic fiber waste, characterized in that: (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 an approximately inverted cone shape. An apparatus for defibrating and supplying inorganic fiber waste according to claim 1.