JP4501139B2 - Workpiece cooling device - Google Patents

Description

  The present invention relates to an apparatus for cooling an object to be used, for example, when conveying an object to be processed which is reduced in volume by using an extrusion molding machine, such as so-called RPF (Refuse Paper & Plastic Fuel).

Conventionally, as this type of extrusion molding machine, for example, a casing in which a waste material containing waste plastics crushed on one side is provided and a discharge part is provided on the other side, and a blade portion in the casing are provided. Are provided in a pair of screw shafts arranged in a freely rotatable manner in a state where they overlap each other, a drive mechanism for rotating the pair of screw shafts in an occlusal direction, and a discharge part of the casing, and compressed by occlusal rotation of the pair of screw shafts 2. Description of the Related Art A structure having a die plate having a plurality of discharge ports for discharging an object to be processed which has been reduced and transferred is known.
JP 2005-199522 A

  However, in the case of these conventional structures, the object to be processed discharged from the discharge port of the die plate of the extrusion molding machine self-heats due to compression volume reduction molding, and a fire occurs when the object to be processed is transported to a storage facility or the like. Therefore, there is a disadvantage that it is necessary to cool to a temperature that does not greatly exceed the outside air temperature so as not to occur.

The present invention aims to solve these disadvantages. Among the present inventions, the invention according to claim 1 is an extrusion molding machine for volume-reducing waste containing crushed waste plastics , A conveyor that conveys the object to be processed discharged from the extrusion molding machine, the conveyor is formed by a pipe conveyor , and the pipe conveyor has a conveying pipe through which the object to be processed can pass and transfer, It consists of a transfer chain that can be pulled and moved in the transport pipe, and has blades attached at intervals. The pipe conveyor is formed in a shape that extends from one vertical transport section to the other vertical transport section. And forming a water storage part capable of storing cooling water for cooling the object to be processed in the horizontal conveying part of the conveying path of the pipe conveyor, and providing a replenishing part for supplying the cooling water to the water storing part. Object to be processed to detect the water state characterized by comprising providing a supply control unit for performing supply control of the cooling water by detecting the liquid level sensor to the upper and lower liquid level of the cooling water in the water storage portion with In the cooling system.

As described above, according to the present invention, the waste containing waste plastics crushed by the extrusion molding machine is reduced in volume, and the object to be processed discharged from the extrusion molding machine is conveyed. It is transported to the discharge position by the conveyor. At this time, the transport conveyor is formed by the pipe conveyor, and the water storage that can store the cooling water for cooling the workpiece in the middle of the transport path in the pipe conveyor. Therefore, the workpiece discharged from the extrusion molding machine is cooled by the cooling water in the water storage section while being conveyed along the conveyance path in the pipe conveyor. The discharged object to be processed can be cooled while being conveyed continuously, preventing the occurrence of fire due to self-heating of the object to be processed, They can be reduced work cost, and transfer the pipe conveyor above the article to be treated can pass through the transfer conveyance pipe, which is pulled movably furnished to the conveying pipe, fitted with a blade at a distance The pipe conveyor is formed into a shape that extends from one vertical conveyance section to the other vertical conveyance section, and cools the workpiece in the horizontal conveyance section of the conveyance path of the pipe conveyor. Since the cooling water is formed in the water storage section that can store water, the structure can be further simplified, the flexibility of the transport path can be increased, and a replenishment section for replenishing the cooling water is provided in the water storage section. In addition, a replenishment control unit is provided to detect the water storage state by detecting the upper and lower levels of the cooling water level in the water storage unit with a liquid level sensor, and to control the cooling water supply. Can be done, it is possible to maintain the cooling effect, Ru can be prevented satisfactorily occurrence of a fire due to self-heating of the workpiece.

1 to 6 show an embodiment of the present invention. Reference numeral 1 denotes an extrusion molding machine. In this case, the extrusion molding machine 1 includes a waste input unit containing waste plastics crushed on one side. And a pair of screw shafts 1c and 1c which are rotatably arranged in parallel with the blades overlapping each other in the casing 1b, and a pair of screws. A drive mechanism that rotates the shafts 1c and 1c in the occlusal direction, and a plurality of workpieces W that are provided in the discharge portion 1a of the casing 1b and that are compressed and transferred by the occlusal rotation of the pair of screw shafts 1c and 1c are discharged. It is comprised by the die plate 1e which has the cylindrical discharge port part 1d ....

Then, waste containing crushed waste plastics is put into the input section, and the waste is compressed and reduced and transferred by rotation of the pair of screw shafts 1c and 1c in the casing 1b. 1d... Is configured to discharge and drop a substantially cylindrical solid workpiece W.

2 is a conveyor, and in this case, a pipe conveyor 3 is used, and this pipe conveyor 3 is provided with a conveying pipe 3a through which the workpiece W can be passed and transported, and is movably installed in the conveying pipe 3a. And a transfer chain 3c to which a disk-shaped blade 3b is attached, and a receiving port 3d for receiving the workpiece W discharged from the discharge port 1d... The transfer chain 3c is circulated and transferred by a pulling mechanism (not shown), and the workpiece W dropped and discharged from the extrusion molding machine 1 is conveyed to a discharge unit (not shown) provided in the pipe conveyor 3. It is configured.

4 is a reservoir, in this case, with the pipe conveyor 3 from one vertical transfer portion R _V via the horizontal conveying unit R _H is formed in a shape extending in the other vertical transfer portion R _V, the pipe conveyor 3 The cooling water M for cooling the workpiece W is formed in the water storage section 4 capable of storing the inside of the horizontal transport section _RH facing the receiving section 3d of the transport path R, and the water storage section 4 has the above-mentioned The water supply port of the replenishing unit 5 for replenishing the cooling water M is provided, and the water level is detected by detecting the upper and lower surfaces of the cooling water M in the water storage unit 4 with the liquid level sensor 6a, thereby controlling the replenishment of the cooling water. The replenishment control part 6 to perform is provided and comprised.

In this case, to connect a pair of upper and lower liquid level sensor 6a · 6a for detecting the liquid level M ₁ of the cooling water M in the reservoir 4 to the receiving opening section 3d, the solenoid valve (not shown) to the liquid level sensor 6a · 6a the electrically connected, connects the supply section 5 and the water supply source to the solenoid valve, reservoir 4 from the water source by detecting a drop in liquid level M ₁ due to evaporation phenomena like of cooling water by the lower limit of the liquid level sensor 6a The cooling water M is replenished inside, and the water supply is stopped by the upper limit liquid level sensor 6a, and the replenishment control of the cooling water M is performed.

  Further, in this case, a dropping mechanism 7 is provided to face the plurality of discharge port portions 1d of the extrusion molding machine 1 and to drop the workpiece W discharged from the discharge port portion 1d. A plurality of drop blades 7c are attached to the tip of the rotating shaft 7b driven by the motor 7a, and the workpiece W wiped off by the drop blades 7c is received in the receiving part 3d. A cover member 7d capable of guiding the drop is provided.

Since this embodiment is configured as described above, the waste containing waste plastics crushed by the extrusion molding machine 1 is reduced in volume, and the workpiece W discharged from the extrusion molding machine 1 is transferred by the conveyor 2. At this time, the conveyor 2 is formed by the pipe conveyor 2, and the cooling water M for cooling the workpiece W is cooled along the conveying path R in the pipe conveyor 3. Since the water storage section 4 capable of storing water is provided, the workpiece W discharged from the extrusion molding machine 1 is cooled by the cooling water M in the water storage section 4 while being transported along the transport path R in the pipe conveyor 1. For this reason, the workpiece W discharged from the extrusion molding machine 1 can be cooled while being continuously conveyed in the middle of conveyance, and a fire due to self-heating of the workpiece W can be prevented. Can Come, it is possible to reduce the simplification and manufacturing cost of the conveyance equipment.

In this case, the pipe conveyor is composed of a transfer pipe 3a through which the object to be processed can pass and transferred, and a transfer chain 3c which is mounted in the transfer pipe 3a so as to be traction-movable, and is attached with blades 3b at intervals. Ri, a pipe conveyor 3 from one vertical transfer portion R _V through the horizontal conveying section R _H is formed in a shape extending in the other vertical transfer portion R _V, a pipe conveyor 3 of the conveying path horizontal conveying section R _H of R Since the cooling water M for cooling the workpiece W is formed in the water storage section 4 capable of storing water , the structure can be further simplified and the flexibility of the transport path can be improved. In this case, the water storage unit 4 is provided with a replenishing unit 5 for replenishing the cooling water M, and the water level of the cooling water M in the water storage unit 4 is detected by the liquid level sensor 6a to store the cooling water M. Is detected to compensate for cooling water M Because comprising a supply control unit 6 for controlling is provided, the supply of the cooling water M can be easily performed, it is possible to maintain a cooling effect.

  In addition, this invention is not restricted to the said embodiment, The structure and form of the extrusion molding machine 1, the pipe conveyor 3, the water storage part 4, a position to arrange | position, etc. are designed and changed suitably.

  As described above, the intended purpose can be sufficiently achieved.

It is a sectional side view of the example of an embodiment of the invention. It is a plane sectional view of an example of an embodiment of the invention. It is a sectional side view of the example of an embodiment of the invention. It is a partial expanded side sectional view of an example of an embodiment of the invention. It is a partial expanded side sectional view of an example of an embodiment of the invention. It is a partial expanded cross-sectional view of the embodiment of the present invention.

W Processed object R Transport route
R _H horizontal transport unit
R _V Vertical conveying section M Cooling water 1 Extruder 2 Conveyor 3 Pipe conveyor
3a transport pipe
3b blade
3c transfer chain 4 water storage part 5 replenishment part 6 replenishment control part
6a liquid level sensor

Claims (1)

It comprises an extrusion molding machine that reduces the volume of waste containing crushed waste plastics, and a conveyor that conveys the material to be processed discharged from the extrusion molding machine. The conveyor is formed by a pipe conveyor. The pipe conveyor is composed of a transfer pipe through which the object to be processed can be transferred and a transfer chain which is movably mounted in the transfer pipe and is attached with blades at intervals. A water storage unit that is formed in a shape that extends from a vertical transfer unit to a horizontal transfer unit and reaches the other vertical transfer unit, and can store cooling water for cooling the workpiece in the horizontal transfer unit of the transfer path of the pipe conveyor. The water storage portion is provided with a replenishing portion for replenishing the cooling water, and the water level is detected by detecting the upper and lower levels of the cooling water level in the water storage portion with a liquid level sensor. Treatment object cooling apparatus characterized by comprising providing a supply control unit for performing supply control of water.

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