Compression pelletizer for waste solid fuel

Abstract

To provide a compression pelletizer for a waste solid fuel, capable of adjusting a flow rate, frictional force, or mixing condition of a waste in a flow path.SOLUTION: A compression pelletizer for a waste solid fuel according to the present invention includes a raw material tube 1 and a screw shaft 2. An interior of the raw material tube 1, which includes a front large-diameter part 11 and a rear small-diameter part 12, is provided with a flow path formed by the front large-diameter part 11 and the rear small-diameter part 12. The screw shaft 2 includes a shaft body having a front large-blade part 21 and a rear small-blade part 22. The front large-diameter part 11 of the raw material tube 1 is formed by fixedly connecting at least one pipe part, and the rear small-diameter part 12 thereof is formed by fixedly connecting at least one pipe part, whereby the front large-diameter part 11 and the rear small-diameter part 12 are connected to constitute the raw material tube 1. The screw shaft 2 is inserted into a flow path inside the raw material tube 1. The pipe part forming the front large-diameter part 11 of the raw material tube 1 includes a tapered flow path segment 111. A rear part of the front large-blade part of the screw shaft 2 is a tapered section 211 formed in a tapered shape.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a waste solid fuel compression granulation device, and particularly to a waste solid fuel compression granulation device that adjusts the flow rate, frictional force, or mixing degree of waste in a flow path.

Background Art

[0002] Refuse Derived Fuel (RDF) refers to solid fuel produced through processes such as crushing, sorting, drying, additive mixing, and forming of biomass, waste, etc. Its main characteristics are that the dimensions and calorific value are uniform (about 2 / 3 of coal), it is easy to transport and store, does not rot even when stored at normal temperature for 6 to 12 months, is easy to use, can be directly applied to mechanical floor furnaces, etc., and used as the main fuel or mixed with coal for incineration. Therefore, it has become one of the main development trends of the world's biofuel technology. Compared with a system that directly incinerates waste, a combustion system using waste solid fuel has a preferable energy system recovery effect, can replace a part of fossil fuel consumption, is also excellent in reducing carbon dioxide emissions (the emissions are about 25 - 50% of the incineration treatment), can mitigate global warming, reduce the emissions of secondary pollution, reduce the emissions of dioxins, and can also reduce the investment in pollution prevention facilities.

[0003] For example, Patent Document 1 is used in a device for producing waste solid fuel. A screw is inserted into the flow path of the raw material transport pipe, the raw material is input and conveyed forward through the blade part of the screw, while being deposited, pressed, dehydrated, and then formed.

[0004] As can be understood from actual use, the waste materials that are input and compression-molded include household waste that is difficult to compress, such as foamed materials. As a result, the flow rate in the flow path may not be smooth, and it may become clogged and stagnant. However, in the conventional waste solid fuel compression granulation device, the flow path and the screw have the same diameter and have a fixed structure that cannot be adjusted, so the flow rate cannot be adjusted according to the actual situation. Therefore, it was necessary to remove and replace the appropriate blade sleeve or screw to change the flow rate, which was troublesome and time-consuming, and had an adverse effect on work efficiency.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In view of such a situation, as a result of intensive research by the present inventor, the problems of the prior art have been improved and the present invention has been completed. The object of the present invention is to prevent clogging by preventing the flow rate from being adjusted according to the actual situation because the flow path and the screw of the conventional waste solid fuel compression granulation device have the same diameter and have a fixed structure that cannot be adjusted, and to provide a waste solid fuel compression granulation device.

Means for Solving the Problems

[0007] In order to solve the above problems, according to an embodiment of the present invention, A waste solid fuel compression granulation device including a raw material pipe (1) and a screw rod (2), Inside the raw material pipe including a front large-diameter section (11) and a rear small-diameter section (12), a flow path formed by the front large-diameter section and the rear small-diameter section is provided, The rod body of the screw rod has a front large blade section and a rear small blade section, At least one pipe section is connected and fixed to the large-diameter front section of the raw material pipe, and at least one pipe section is connected and fixed to the small-diameter rear section. The large-diameter front section and the small-diameter rear section are connected to form the raw material pipe. There is provided a waste solid fuel compression granulation device, wherein the screw rod is inserted into the flow path of the raw material pipe.

[0008] The pipe section constituting the large-diameter front section of the raw material pipe includes a pipe section (111) having a tapered flow path. When the side of the screw rod closer to the small-diameter rear section is defined as the rear, the rear section of the large-blade front section of the screw rod is a tapered section (211) formed in a tapered shape. The screw rod is inserted into the flow path of the raw material pipe. The tapered section preferably has a shape along the inside of the large-diameter front section of the raw material pipe and has a pipe section having the tapered flow path.

[0009] The small-blade rear section of the screw rod is preferably configured such that the rod body is fitted into at least one detachable blade part (221) or a single-blade part sleeve (222).

[0010] At least one first cut-off friction material cut-off ring (3) is sandwiched and joined at the connection location of the pipe sections of the large-diameter front section and the small-diameter rear section of the raw material pipe. Preferably, the inner diameter of the first cut-off friction material cut-off ring is smaller than the inner diameter of the large-diameter front section.

[0011] Preferably, at least one second cut-off friction material cut-off (4) is sandwiched and joined at the connection location between the large-blade front section and the small-blade rear section of the screw rod.

Advantages of the Invention

[0012] The waste solid fuel compression granulation device of the present invention improves the problem that the flow path and screw of the conventional waste solid fuel compression granulation device have the same diameter and are of a fixed structure that cannot be adjusted, and can also prevent clogging by adjusting the flow rate according to the actual situation.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0014] Referring to FIGS. 1 to 3. As shown in FIGS. 1 to 3, a waste solid fuel compression granulation device according to an embodiment of the present invention is composed of at least a raw material pipe 1 and a screw rod 2.

[0015] Inside the raw material pipe 1, a flow path including a front large-diameter section 11 and a rear small-diameter section 12 is provided. The rod body of the screw rod 2 has a front large blade section 21 and a rear small blade section 22. The above-mentioned front large-diameter section 11 of the raw material pipe 1 is connected and fixed via at least one pipe section, and the rear small-diameter section 12 is connected and fixed via at least one pipe section, and the pipe sections of the two parts are connected to form the raw material pipe 1.

[0016] The pipe section constituting the front large-diameter section 11 includes a pipe section 111 having a tapered flow path. The rear section of the above-mentioned front large blade section 21 of the screw rod 2 is formed into a tapered section 211. The above-described screw rod 2 is inserted into the flow path of the above-described raw material pipe 1, and its tapered section 211 corresponds to the pipe section 111 of the tapered flow path of the front large-diameter section 11 of the raw material pipe 1.

[0017] At least one first cut-off friction material cut-off ring 3 is sandwiched and joined at the connection location of the pipe sections of the front large-diameter section 11 and the rear small-diameter section 12 of the raw material pipe 1, and its inner diameter is smaller than that of the above-described front large-diameter section 11.

[0018] The rear small blade section 22 of the above-described screw rod 2 is configured by fitting the rod body to at least one detachable blade section 221 or a single-blade section sleeve 222. At least one second cut-off friction material cut-off ring 4 is sandwiched and joined at the connection location between the front large blade section 21 and the rear small blade section 22 of the screw rod 2.

[0019] In this embodiment, within the flow path of the above-described raw material pipe 1, when converting from the front large-diameter section 11 to the rear small-diameter section 12, if the input waste fuel is not easily compressed, due to the relatively large flow space of the front large-diameter section 11 and the front large blade section 21 of the screw rod 2 therein, the waste can be smoothly flowed, crushed, and dehydrated, and then enter the rear small-diameter section 12 to adjust the flow rate.

[0020] In particular, the tapered section 211 of the screw rod 2 corresponds to the above-described raw material pipe 1. The pipe section 111 of the tapered flow path of its front large-diameter section 11 is designed in a "conical" shape, and its flow path gradually shrinks from a large diameter to a small diameter, enhancing the pressing effect on the waste and enabling adjustment of the flow rate.

[0021] When entering the rear small-diameter section 12, depending on the situation, a detachable blade section 221 or a single-blade section sleeve 222 can be fitted to or removed from the rod body of the screw rod 2 to control and adjust its flow rate or flow velocity.

[0022] At the connection point of the pipe sections of the front large-diameter section 11 and the rear small-diameter section 12 of the above-mentioned raw material pipe 1, in order to be able to adjust the degree of mixing of waste and the magnitude of frictional force in the flow path, by sandwiching at least one first cut-off friction material cut-off ring 3 with an inner diameter smaller than that of the above-mentioned front large-diameter section 11 and joining them, the flow resistance generated in the waste passing through the space can be reduced, and the magnitude of the frictional force in the flow path and the degree of mixing of the waste can be adjusted.

[0023] At the connection point between the front large blade section 21 and the rear small blade section 22 of the above-mentioned screw rod 2, at least one second cut-off friction material cut-off ring 4 is sandwiched and joined, and the protruding ring body generates flow resistance against the passing waste, so that the magnitude of the frictional force in the flow path or the degree of mixing of the waste can be adjusted.

[0024] As can be seen from the above, the waste solid fuel compression granulation device of this embodiment can adjust the flow rate, adjust the frictional force, and improve the drawbacks of the prior art.

Explanation of symbols

[0025] 1 Raw material pipe 2 Screw rod 3 First cut-off friction material cut-off ring 4 Second cut-off friction material cut-off ring 11 Front large-diameter section 12 Rear small-diameter section 21 Front large blade section 22 Rear small blade section 111 Pipe section with tapered flow path 211 Tapered section 221 Detachable blade part 222 Single blade part sleeve

Claims

1. A waste solid fuel compression granulation device comprising a raw material pipe (1) and a screw rod (2), Inside the raw material pipe including a front large-diameter section (11) and a rear small-diameter section (12), a flow path formed by the front large-diameter section and the rear small-diameter section is provided, The rod body of the screw rod has a front large vane section (21) and a rear small vane section (22), The front large-diameter section of the raw material pipe has at least one pipe section connected and fixed, the rear small-diameter section has at least one pipe section connected and fixed, and the front large-diameter section and the rear small-diameter section are connected to form the raw material pipe, The screw rod is inserted into the flow path of the raw material pipe, and the waste solid fuel compression granulation device is characterized by this.

2. The pipe section constituting the front large-diameter section of the raw material pipe includes a pipe section (111) having a tapered flow path, When the side of the screw rod closer to the rear small-diameter section is defined as more rearward, the rear stage of the front large vane section of the screw rod is a tapered section (211) formed in a tapered shape, The screw rod is inserted into the flow path of the raw material pipe, the tapered section has a shape along the inside of the front large-diameter section of the raw material pipe, and the waste solid fuel compression granulation device according to claim 1 is characterized by having a pipe section having the tapered flow path.

3. The waste solid fuel compression granulation device according to claim 1, wherein the rear small vane section of the screw rod is configured such that the rod body is fitted into at least one detachable vane section (221) or a single vane section sleeve (222).

4. At least one first cut-off friction material cut-off ring (3) is sandwiched and joined at the connection location of the pipe sections of the front large-diameter section and the rear small-diameter section of the raw material pipe, and the waste solid fuel compression granulation device according to claim 1 is characterized in that the inner diameter of the first cut-off friction material cut-off ring is smaller than the inner diameter of the front large-diameter section.

5. The waste solid fuel compression granulation device according to claim 1, wherein at least one second cut-off friction material cut-off ring (4) is sandwiched and joined at the connection location between the front large vane section and the rear small vane section of the screw rod.

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