JPS6240995Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a waste tire chip feeding device.

Currently, waste tires are cut into chips by a crusher, stored in a storage tank, and sent from the storage tank to an incinerator in fixed quantities via a waste tire chip supply device (hereinafter simply referred to as the supply device).
There, the waste is incinerated and heat is recovered. By the way, as shown in FIG. 1, the supply device 1 that supplies the waste tire chips (hereinafter simply referred to as chips) to the incinerator includes a ribbon-shaped screw blade 2 and a rotation drive that rotates the ribbon-shaped screw blade 2. When inside the storage tank 4, the ribbon-shaped screw blade 2 is disposed in a U-shaped groove 5 formed approximately in the center of the bottom wall of the storage tank 4, and Between the front wall 4a of 4 and the inlet of the incinerator (not shown), the front wall 4
It is disposed within a discharge tube 6 provided to protrude outward from a. By the way, according to the above structure, in the vicinity of the entrance of the discharge tube 6, the chips that are taken into the ribbon-shaped screw blades 2 and are transported from the rear to the front are mixed with the chips that are descending along the front wall 4a. The two join together and enter the discharge tube 6 while pushing each other. In this way, when the chips enter the ejection tube 6 while being pushed together, the chips are pressed against the inner peripheral surface of the ejection tube 6, creating a frictional force, and the chips are smoothly scraped up by the ribbon-shaped screw blades 2. As a result, the chips become stuck between the outer peripheral surface of the ribbon-shaped screw blade 2 and the inner peripheral surface of the discharge tube 6, making it impossible to continuously eject chips. It had the disadvantage of being overloaded.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a waste tire chip supply device that can eliminate the above-mentioned drawbacks.

That is, the present invention provides a ribbon-shaped waste tire chip disposed in a U-shaped groove formed on the bottom wall of a storage tank for waste tire chips, and in a discharge tube that is connected to and protrudes from the U-shaped groove to the outside of the storage tank. In a waste tire chip supply device comprising a screw blade and a rotational drive device for rotating the ribbon-shaped screw blade, first protrusions are provided at predetermined intervals on the outer periphery of the ribbon-shaped screw blade in the discharge tube, and A waste tire chip supply device is characterized in that second protrusions are provided at predetermined intervals on the front surface near the outer periphery of the blade over the entire length. According to this configuration, the waste tire chips transferred into the discharge tube are transferred to the ribbon-shaped screw blade. Even if the chips try to get caught between the outer circumferential surface and the inner circumferential surface of the ejection tube, they are scraped up by the first protrusion, and therefore, the biting of the waste tire chips does not grow as in the conventional case, so the waste tire chips can be smoothly removed. It is continuously discharged toward the incinerator side, and the rotational drive device of the ribbon-shaped screw blades is not overloaded. Further, since the first protrusion is provided only in the ejection tube portion, that is, it is not provided in the storage portion, the chips are not forcibly taken into the U-shaped groove. Furthermore, since the second protrusion is provided over the entire length of the ribbon-shaped screw blade, the chips staying within the diameter of the ribbon-shaped screw blade can be scraped out without being compressed too much.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 5. Reference numeral 11 denotes an incinerator for incinerating waste tire chips (hereinafter simply referred to as chips) 12 that have been cut into chips by a crusher, and an incinerator 11 has an input port 1 for inserting the chips 12 in the middle of a side wall 11a thereof.
3 is formed to protrude, and a heat transfer tube 14 for heat recovery is disposed within the incinerator 11. 15 is a measuring device placed on the upper surface of the input port 13. 1
Reference numeral 6 denotes a storage tank for storing the chips 12. An opening 17 is formed in the upper part of the rear wall 16a, and a conveyor 18 for feeding the chips 12 is disposed in the opening 17, and the storage tank 16 is placed in the lower part of the opening 17. A waste tire chip supply device (hereinafter simply referred to as a supply device) 19 is provided for supplying the chips 12 inside to the incinerator 11 in fixed quantities. That is, the supply device 19 extends into a U-shaped groove 20 formed at the center of the bottom wall 16b of the storage tank 16 and from this U-shaped groove 20 to the outside of the storage tank 16 and above the input port 13 of the incinerator 11. Ribbon-shaped screw blades 22 arranged in a discharge tube 21 arranged in a row, and a storage tank 1
6, and a rotation drive device 23 for rotating the ribbon-shaped screw blades 22 disposed on the outside. In addition, the above-mentioned ribbon-shaped screw blade 2
2 is supported and rotationally driven via a shaft body 24 connected to one end thereof. That is, shaft body 2
Reference numeral 4 denotes a rear wall 16a of the storage tank 16 and a support bracket 25 provided at a location slightly away from the rear wall 16a.
are supported via bearings 26, and a sprocket 27 is attached to the free end thereof, and the sprocket 27 and the rotational drive device 23 are connected to each other.
A chain 29 is wound around the side sprocket 28. Further, a plurality of first protrusions 30 are provided on the outer periphery of the ribbon-shaped screw blade 22 in the discharge tube 21 at predetermined intervals, and a plurality of first protrusions 30 are provided at predetermined intervals on the front surface near the outer periphery of the blade over the entire length of the ribbon-shaped screw blade 22. A plurality of second protrusions 33 are provided. Note that the distance between the outer circumferential surface of the first protrusion 30 and the inner circumferential surface of the discharge tube 21 is the same as that of the chip 12.
It is designed to hold 2 pieces. In addition, the discharge pipe 2
In order to prevent a bridging phenomenon of the chip 12 near the inlet of the discharge tube 21, the upper half 21a of the discharge tube 21 is provided so as to be inclined outward. In addition,
Of course, a discharge port 31 is formed at the tip of the discharge tube 21 and opens at a position above the measuring instrument 15.

Therefore, in the above configuration, the chips 12 carried by the truck 32 are transferred to the input conveyor 1.
8 into the storage tank 16 and stored therein. The stored chips 12 are conveyed through the U-shaped groove 20 and the discharge tube 21 by the rotating ribbon-shaped screw blade 22, and are incinerated through the discharge port 31 at the tip of the discharge tube 21 via the measuring device 15 and the input port 13. It is supplied into the furnace 11 and incinerated, and the heat is recovered by the heat transfer tube 14. by the way,
In the discharge tube 21, even if the chip 12 tries to slip between the outer circumferential surface of the ribbon-shaped screw blade 22 and the inner circumferential lower surface of the discharge tube 21, the first protrusion 3
Since the chips 12 are raked upward by the screws 0 and the chips 12 do not grow as in the conventional case, the chips 12 are smoothly and continuously conveyed to the discharge port 31. Furthermore, since the first protrusion 30 is provided only in the ejection tube 21 and not in the storage portion, the chips are forced into the U-shaped groove.
Do not include within 0. Further, since the second protrusion 33 is provided over the entire length of the ribbon-shaped screw blade 22, the chips staying within the diameter of the ribbon-shaped screw blade 22 can be scraped out without being compressed too much.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of a conventional example. Figure 2~
Fig. 5 shows an embodiment of the present invention, Fig. 2 is an overall sectional view, Fig. 3 is an enlarged sectional view of the main part, Fig. 4 is a partially cutaway view of Fig. 3, and Fig. Figure 5 is the second
It is a - arrow direction view of a figure. 11...Incinerator, 12...Waste tire chips, 1
6...Storage tank, 16b...Bottom wall, 19...Waste tire chip supply device, 20...U-shaped groove, 21...
Discharge pipe, 22... Ribbon-shaped screw blade, 23
...Rotary drive device, 30, 33...Protrusion.

Claims (1)

[Scope of utility model registration request] U formed on the bottom wall of the waste tire chip storage tank
Consisting of a ribbon-shaped screw blade disposed in a discharge tube that is connected to the inside of the U-shaped groove and protrudes outward from the U-shaped groove to the outside of the storage tank, and a rotation drive device that rotates the ribbon-shaped screw blade. In the waste tire chip supply device, first protrusions are provided at predetermined intervals on the outer periphery of the ribbon-shaped screw blade in the discharge tube, and second protrusions are provided at predetermined intervals on the front surface near the outer periphery of the blade over the entire length of the ribbon-shaped screw blade. A waste tire chip feeding device characterized by: