JP2006008376A - Constant quantity feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a constant quantity feeder capable of preventing a carried article from being caught into a fitting portion between a sprocket and a chain scraper, and further stably and efficiently feeding constant quantity of the carried articles without generating a bridge phenomenon, in the constant quantity feeder equipped with the chain scraper structured by coupling endless chains provided on both side portions in a reservoir tank with bar-like rigid members at intervals. <P>SOLUTION: In the constant quantity feeder comprising the reservoir tank, the chain scraper provided in the reservoir tank, and a discharging portion provided under an end portion of the chain scraper, the chain scraper is structured by coupling the endless chains provided on both side portions of the reservoir tank with the bar-like rigid members at intervals. The chain scraper is supported at three points by both end portions under the reservoir tank and a sprocket provided above the reservoir tank. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for quantitatively supplying crushed waste, powder and the like. The quantitative supply device of the present invention can be suitably used as a quantitative supply device in a device that crushes waste such as paper, wood, plastic and the like into a solid fuel.

  Conventionally, waste such as paper, wood, and plastic is crushed by a crusher, stored in a raw material hopper (storage tank), and crushed waste is quantitatively supplied by a screw conveyor or belt conveyor, and then kneaded and compressed by a molding machine. Thereafter, a method of extruding to form a solid fuel is known. However, when the crushed waste is quantitatively supplied from the storage tank to the molding machine by the screw conveyor, the bridge (shelf hanging) phenomenon occurs because the specific gravity of the raw material waste is relatively small, and the waste is stored in the storage tank. In other words, the screw conveyor does not fall and the screw conveyor is idle, and the raw material waste is not supplied to the molding machine in a fixed amount. In addition, when the crushed waste is directly supplied from the crusher to the molding machine by a belt conveyor or the like, the supply amount of raw material waste becomes unstable and the target solid fuel cannot be produced efficiently. was there.

  In order to solve these problems, the present inventors, as seen in FIG. 5, use a rod-like rigid member as an endless chain provided on both sides as a conveyor disposed in a storage tank of a waste quantitative supply device. And a chain scraper 103 connected with a gap between them, and a constant quantity supply device provided with a flow dividing plate 110 inside the chain scraper. (See Patent Document 1)

JP 2002-136861 A

  The quantitative supply device of Patent Document 1 prevents the bridging phenomenon in the conventional quantitative supply device described above, and enables stable and efficient quantitative supply of crushed waste. However, in the fixed quantity supply device 101, the chain scraper 103 is fitted to the sprockets 107 and 107 provided at both lower ends of the storage tank 102 and supported horizontally (see FIG. 5). The waste that has been crushed at the fitting portion with the chain scraper 103 is bitten, an excessive load is applied to the chain scraper, and the quantitative supply may become unstable.

  Accordingly, the present invention provides a metering supply device comprising a chain scraper configured by connecting endless chains provided on both sides in a storage tank with a rod-like rigid member at an interval, and the sprocket and the chain scraper are fitted together. It is an object of the present invention to provide a quantitative supply device that prevents the transported object from being caught in the section and can stably and efficiently supply the transported object without causing a bridging phenomenon.

  As a result of intensive studies, the present inventors have provided a sprocket that supports a chain scraper above the storage tank, and the chain scraper is supported at three points by the sprocket and the sprockets provided at both ends of the storage tank. The present invention has been completed by finding out that the problem is solved.

That is, this invention takes the structure of the following 1-5.
1. In a quantitative supply device having a storage tank, a chain scraper provided inside the storage tank, and a discharge part provided below the end of the chain scraper, an endless chain provided with chain scrapers on both sides of the storage tank has a rod-like rigidity. A quantitative supply device comprising: a chain scraper supported at three points by sprockets provided at both ends below the storage tank and above the storage tank, while being configured by connecting the members at intervals.
2. 2. The quantitative supply device according to 1, wherein a sprocket provided above the storage tank is arranged in the storage tank at a position closer to the rear in the transport direction of the object to be transported.
3. 3. The quantitative supply device according to 1 or 2, wherein a sprocket provided above the storage tank is arranged so that it can be selected at a plurality of positions.
4). The angle θ between the chain erected on the sprockets arranged at both ends below the storage tank, the sprocket laid on the lower part near the rear in the transport direction of the object to be transported, and the chain erected on the sprocket provided above the storage tank is 45 4. The quantitative supply device according to any one of 1 to 3, wherein ° ≦ θ ≦ 85 °.
5. 1 to 4 characterized in that an opening is provided below the central portion of the discharge portion, and a screw shaft having rotating blades opposite from both ends over the entire width in the width direction of the discharging portion and having no rotating blade in the central portion is arranged. The fixed-quantity supply apparatus in any one of.

  In the quantitative supply device having the chain scraper of the present invention, the object to be transported is prevented from being caught in the sprocket and chain scraper fitting portion, and the material to be transported is more stably and efficiently supplied without causing a bridge phenomenon. can do.

Next, the quantitative supply device of the present invention will be described with reference to the drawings, but the following specific examples do not limit the present invention.
1 and FIG. 2 are diagrams showing an example in which the present invention is applied to a waste quantitative supply device, FIG. 1 is a schematic sectional view of the device, and FIG. 2 is a schematic sectional view taken along line XX in FIG. .

  The fixed amount supply device 1 includes a crushed waste inlet 2, a storage tank 3, a chain scraper 4 supported by the sprockets 5, 6 and 7 in the storage tank 3, and a lower end of one end of the chain scraper 4. It has the discharge part 8 provided in.

  The chain scraper 4 is configured by connecting endless chains 11 and 11 provided on both sides with a rod-like rigid member 12 with an interval (see FIG. 2). And it fits into the sprockets 5 and 6 provided at both ends below the storage tank 3 and the sprocket 7 provided above the storage tank 3 and is supported at three points. (See Figure 1)

  The sprockets 6 and 6 on the discharge unit 8 side are connected to a motor 15 by a rotary shaft 13, and the sprockets 5 and 5 on the opposite side to the discharge unit 8 are connected and pivotally supported by a rotary shaft 14 (see FIG. 2). . A pair of sprockets 7 and 7 provided above the storage tank 3 are also connected and pivotally supported by a rotating shaft (not shown).

  An opening 16 serving as a discharge port is provided below the central portion of the discharge portion 8, and rotating blades 17, 17 that are opposite to each other from both ends toward the central portion over the entire length in the width direction of the discharge portion 8, A screw shaft 18 having no rotating blade is disposed at the center, and this screw shaft 18 is connected to a motor 19. The opening 16 can be connected to a molding device that compresses the crushed waste, solidifies the volume and solidifies it into a solid fuel.

  In this quantitative supply device 1, the chain scraper 4 rotates in the direction of the arrow in FIG. 1 as the motor 15 rotates, and the crushed waste that is the transported object connects the lower chain scraper. 12 to the discharge unit 8. Part of the crushed waste is returned in the opposite direction by the rigid member 12 connecting the upper chain scraper.

  The crushed waste sent to the discharge unit 8 is transferred to the central portion of the discharge unit 8 by a screw shaft 18 that is rotated by a motor 19 and has rotating blades 17 and 17 opposite to each other at both ends. The fixed amount is supplied.

  In this apparatus 1, the third sprocket 7 is provided above the storage tank 3, and the chain scraper 4 is supported at three points by the sprockets 5, 6 and 7, thereby providing a quantitative supply for supporting the chain scraper of Patent Document 1 in the horizontal direction. Prevents biting of waste (conveyed material) crushed at the sprocket and chain scraper fitting generated by the equipment, and provides a more stable and quantitative supply of the conveyed material without causing a bridging phenomenon Is possible.

  As seen in FIG. 1, the sprocket 7 provided above the storage tank 3 is preferably arranged in the storage tank 3 at the rear side in the transport direction of the object to be transported. Further, the sprocket 7 is preferably arranged to be selectable at a plurality of positions, for example, 7 and 7 ′ in FIG. 3. At that time, a rotating shaft that connects the sprockets 7 and 7 may be fitted in the sliding groove, and may be fixed by sliding in the horizontal direction or the vertical direction.

  By making the position of the sprocket 7 selectable, the chain scraper 4 can be maintained in the most appropriate state according to the type, size, property, etc. of the object to be transported. Also, the speed of the chain scraper 4 can be changed as appropriate. For example, when the object to be transported is a relatively light object, it can be supplied little by little by increasing the speed.

  The angle θ (see FIG. 1) between the horizontal chain of the chain scraper 4 installed on the sprockets 5 and 6 and the chain installed on the sprockets 5 and 7 (see FIG. 1) is about 45 ° ≦ θ ≦ 85 °, particularly 60 ° ≦ It is preferable that θ ≦ 80 °.

The size and shape of the quantitative supply device of the present invention can be arbitrarily selected according to the size of the site where the device is installed, the processing amount, and the like. When used as a standard waste quantitative supply device, for example, the storage tank 3 can have a rectangular shape with a width of 150 to 300 cm, a length of 300 to 500 cm, and a height of about 150 to 300 cm. . The chain scraper 4 provided in the storage tank 3 has a width of 60 to 150 cm, a diameter of the sprockets 5, 6 and 7 engaging the chain of 30 to 60 cm, and an interval between the rigid members 12 connecting the chains on both sides is 10. It can be set to about ~ 80 cm. As the rigid member 12, it is preferable to use a round bar having a diameter of about 2 to 3 cm.
As a material constituting these members, ordinary materials such as iron and stainless steel are used.

The quantitative supply device of the present invention is suitably used for an apparatus (plant) for crushing waste such as paper, wood, plastic, etc., and producing solid fuel. FIG. 4 is a schematic diagram showing an example of a production process in such a solid fuel production apparatus.
Wastes such as paper, wood, and plastics are crushed to a size of about 10 to 50 mm by a crushing apparatus after sorting out substances that may generate harmful substances such as chlorine-containing plastics if necessary. The crushed waste is sent to the fixed amount supply device of the present invention, and a fixed amount is stably supplied from the fixed amount supply device to the molding device, and after being kneaded and compressed by the molding device, the solid fuel is obtained by extrusion molding. It becomes.

As the molding device, a known device such as a twin-screw type volume reduction molding machine equipped with a heating means can be used, but by using the above-described quantitative supply device, the molding device has a certain amount. Waste is supplied stably. Therefore, it becomes very easy to control the operating conditions in the molding apparatus, and solid fuel can be produced at a lower temperature (heater temperature 120 to 150 ° C.) than the conventional molding temperature (heater temperature 180 to 200 ° C.). It is possible to significantly reduce power and reduce costs.
Further, by molding at a low temperature, it is possible to prevent melting or gasification of plastics or the like and obtain a solid fuel having stable properties.

In the above example, the example in which the present invention is applied to the waste quantitative supply apparatus has been described. However, the present invention is not limited to the waste quantitative supply apparatus, and other powders, granules, and the like are quantitatively determined. It goes without saying that it can be used as a feeding device.
Of course, the design of the motor 15 for driving the chain scraper 4 can be changed as appropriate, for example, by attaching the motor 15 to the rotating shaft 14 that connects the sprockets 5 and 5 arranged near the rear in the carrying direction of the object to be carried.

It is a cross-sectional schematic diagram which shows one example which applied this invention to the fixed quantity supply apparatus of the waste. It is a cross-sectional schematic diagram in the XX line of FIG. It is a cross-sectional schematic diagram which shows the other example which applied this invention to the quantitative supply apparatus of the waste. It is a schematic diagram which shows the process which manufactures solid fuel from a waste material using the fixed supply apparatus of this invention. It is a cross-sectional schematic diagram which shows the conventional quantitative supply apparatus of the waste.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 Fixed_quantity | feed_rate supply apparatus 2 Input port 3,102 Storage tank 4,103 Chain scraper 5,6,7,107 Sprocket 8 Discharge part 11 Chain 12 Rigid member 13,14 Rotary shaft 15,19 Motor 16 Opening 17 Rotary blade 18 Screw shaft 110 Shunt plate

Claims (5)

  In a quantitative supply device having a storage tank, a chain scraper provided inside the storage tank, and a discharge part provided below the end of the chain scraper, an endless chain provided with chain scrapers on both sides of the storage tank has a rod-like rigidity. A quantitative supply device comprising: a chain scraper supported at three points by sprockets provided at both ends below the storage tank and above the storage tank, while being configured by connecting the members at intervals.   2. The quantitative supply device according to claim 1, wherein a sprocket provided above the storage tank is disposed in the storage tank at a position closer to the rear in the transport direction of the object to be transported.   3. The quantitative supply device according to claim 1, wherein the sprocket provided above the storage tank is arranged so that it can be selected at a plurality of positions.   The angle θ between the chain erected on the sprockets arranged at both ends below the storage tank, the sprocket laid on the lower part near the rear in the conveying direction of the object to be transported, and the chain erected on the sprocket provided above the storage tank is 45 The quantitative supply device according to claim 1, wherein ° ≦ θ ≦ 85 °. 2. An opening is provided below the central portion of the discharge portion, and a screw shaft having a rotary blade that is opposite from both ends over the entire length in the width direction of the discharge portion and having no rotary blade is disposed in the central portion. The fixed-quantity supply apparatus in any one of -4.