JPH08336836A - Apparatus for processing waste plastic material - Google Patents

Abstract

PURPOSE: To provide an apparatus for processing waste plastic materials which can decrease the vol. of the waste plastic materials being largely generated from ordinary homes and businesses and is safe and easily handled. CONSTITUTION: A processing cylinder 6 for storing waste plastic materials on a bottom plate, an air bag type actuator 11 provided below the bottom plate and compressing the waste plastic materials by moving up and down the bottom plate 14, an air pump 10 for feeding compressed air into the air bag type actuator 11, a circulation device 5 for feeding and circulating hot air into the processing cylinder 6 and a heating means for heating air are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste plastic material treating apparatus which can reduce the volume of waste plastic material discharged from a large amount of households or businesses and is easy to handle.

[0002]

2. Description of the Related Art When packaging foods, precision machines, etc., plastic containers and packaging materials are often used. The plastic containers and packaging materials are turned into garbage immediately after being used. And nowadays, it is said that a large part of the garbage generated by ordinary households is this waste plastic material. The waste plastic material that has been turned into dust is originally a large amount and is very bulky in volume. This waste plastic material is often collected in a garbage truck and then disposed of in an incineration site or landfill site. In general households, waste plastic remains bulky until waste is collected. You must keep the material. Keeping bulky waste plastic material in a small home is a considerable burden. Moreover, it was necessary to transport it to the collection site before the collection.

This situation is exactly the same for waste plastic materials that are generated in business such as fast food restaurants, restaurants and supermarkets.

At present, several treatment techniques have been proposed for treating waste plastic materials. One is a heating incinerator or a heating / melting device that incinerates or melts the input waste plastic material using a heater or hot air gas.
The second is a frictional heat melting device that melts using frictional heat. All of these are large-scale facilities for processing waste plastic materials, and it is practically difficult to use them in small households because they require a small-scale processing. At present, these are industrial processes that generate large amounts of waste plastic materials. Is used in.

The waste plastic material discharged from ordinary households has a constraint that the discharge amount is small as compared with the waste plastic material discharged in business, and there is a constraint that it should not be installed in an unnecessary place. , Development is not progressing. However, in such a situation, as a waste plastic material treating apparatus which can be used in general households, a system of heating and compressing the waste plastic material with hot air or reduced pressure air has been proposed. That is, this is to put the waste plastic material into the garbage storage chamber, send hot air to circulate in the device, depressurize the air in the garbage storage chamber and compress it at atmospheric pressure, soften and reduce the volume of the waste plastic material. It is made into blocks.

[0006]

However, this waste plastic material treating apparatus for general households is installed in the household to enable the treatment of waste plastic material, but it has the following problems. there were. That is, there is a possibility that animals and children may get inside the waste plastic material processing device when the waste plastic material processing device is not used. At this time, it is extremely dangerous if the waste plastic material processing apparatus is accidentally activated. This is also the case with a waste plastic material processing apparatus for business purposes, but the possibility is low because animals and children are less likely to approach it for business reasons. However, even in this case, there are essentially the same problems.

[0007] Also, if someone opens the lid of the processing device while the waste plastic material processing device is in operation, there is a risk that hot air circulating in the processing device will flow out and a person on the side will be burned. Furthermore, when heavy objects are detected during operation, it is desirable to stop the waste plastic material processing device for safety. And checking and driving these series of dangers is quite troublesome.

Therefore, in order to solve such a conventional problem, the present invention can reduce the volume of waste plastic material generated in large quantities in general households and businesses, and is safe and easy to handle. An object is to provide a material processing device.

[0009]

In order to solve the above-mentioned problems, a waste plastic material processing apparatus of the present invention comprises a processing cylinder for accommodating waste plastic material on a bottom plate and a bottom plate provided below the bottom plate to move the bottom plate up and down. An air bag type actuator for compressing waste plastic material, an air pump for sending compressed gas to the air bag type actuator, a circulation device for sending hot air into the processing cylinder for circulation, and a heating means for heating the air. Characterize.

It is suitable to provide a pressure sensor for detecting the pressure of the compressed gas sent to the air bag type actuator and detect that a heavy object is contained in the processing cylinder.

It is desirable to provide a temperature sensor for detecting the temperature inside the processing cylinder, and to close the lid for covering the processing cylinder when the temperature sensor reaches a predetermined temperature or higher.

It is suitable to provide a control means for releasing the closing of the lid by the detection signal from the pressure sensor.

[0013]

According to the present invention, since the air bag type actuator is provided below the bottom plate to move the bottom plate up and down to compress the waste plastic material, and the air pump for sending the compressed gas to the air bag type actuator, the air bag type actuator is provided. The bottom plate can be lifted with to compress the waste plastic material.

Since a pressure sensor for detecting the pressure of the compressed gas sent to the air bag type actuator is provided,
It is possible to detect that a heavy object is stored in the processing cylinder.

A temperature sensor for detecting the temperature inside the processing cylinder is provided, and when the temperature sensor reaches a predetermined temperature or higher, the lid covering the processing cylinder is closed. Therefore, the lid is locked during heating.

Since the control means for releasing the closing of the lid by the detection signal from the pressure sensor is provided, the lid is unlocked for safety.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waste plastic material processing apparatus according to an embodiment of the present invention will be described below. FIG. 1 is a longitudinal sectional view of a main portion of a waste plastic material processing apparatus according to an embodiment of the present invention, and FIG. 2 is a pressure change diagram when a heavy object enters the waste plastic material processing apparatus according to an embodiment of the present invention. is there.

In FIGS. 1 and 2, 1 is a lid, and 2 is an electromagnetic solenoid for locking the lid 1, which is provided on the lid 1. Reference numeral 3 denotes a thermistor for detecting the temperature of the hot air when the air is heated by the heating means 4 by the circulation device 5 composed of an axial fan and sent to the processing cylinder 6. The heating means 4 is an electric heater or the like. The heating means 4 and the thermistor 3 are provided inside the processing cylinder 6 and the circulation device 5.
It is provided in the heating chamber communicating with the discharge port of. The processing cylinder 6 is one in which the lid 1 is opened and a waste plastic material is put therein, and a bottom plate 14 to be described later is provided on the cylinder bottom. An electromagnetic solenoid 2 is arranged on the upper surface of the processing cylinder 6, and when a current is applied to close the lid 1, the electromagnetic solenoid 2 is attracted to the upper surface of the processing cylinder 6 and the lid 1 and the processing cylinder 6 are attached. To lock. Reference numeral 7 denotes a large number of circulation holes provided in the processing cylinder 6. The hot air heated in the heating chamber is introduced into the processing cylinder 6 through the circulation holes 7 on the upper side, and at the lower side of the processing cylinder 6. It is discharged from the circulation hole 7. The hot air introduced into the processing cylinder 6 melts the waste plastic material in the processing cylinder 6, then is discharged from the lower circulation hole 7, and is discharged into the inner container 8 housing the processing cylinder 6. The hot air discharged then flows between the inner container 8 and the processing cylinder 6,
It returns to the suction port of the circulation device 5 provided in the inner container 8.
Then, it is again discharged into the heating chamber by the circulation device 5.
Reference numeral 9 is a deodorizing device for deodorizing the gas generated during the volume reduction process of the waste plastic material. In addition to accommodating activated carbon or the like for deodorization, a catalyst or the like may be used. Reference numeral 10 is an air pump for inflating the air bag-like bag of the air bag type actuator 11, and 12 is a relay portion for sending the compressed gas from the air pump 10 to the air bag-like bag. The airbag-type actuator 11 is capable of adjusting the height of the airbag-like bag by expanding or contracting the airbag-like bag. The relay unit 12 has a pressure sensor 13 for detecting the weight of the waste plastic material inside the processing cylinder 6.
Is provided. Reference numeral 14 denotes a bottom plate that pushes up and compresses the waste plastic material by receiving the force when the airbag-like bag is inflated. Reference numeral 15 is a control box in which a microcomputer and the like are housed, and 16 is a main body exterior container, which is provided with an operation panel on the surface of which switches and the like are arranged. Reference numeral 17 is an air bleeding solenoid valve for bleeding compressed gas from the airbag bag.

Next, the operation of the waste plastic material processing apparatus of this embodiment will be described in detail. As shown in FIG. 2, when the lid 1 is opened from the stationary state represented by the period T ₁ , the waste plastic material is put in, the lid 1 is closed again, and the start switch provided in the control box 15 is pressed, When the heavy object is not accommodated, the heating means 4, the circulation device 5, and the deodorizing device 9 are started to be driven by the control means including the microcomputer in the control box 15 and the period T
A state in the _second operation. A curve a shown in FIG. 2 shows a pressure change from a stationary state to an operating state when a heavy object is not stored.

However, if a heavy load is accommodated in the processing cylinder at this time, two loads are applied to the air bag type actuator 11 such as the bottom plate and the heavy load, and the load from the inside of the air bag-like bag to the air pump 10 is increased. The pressure of the compressed gas shows a high pressure value in the B region as shown by the curve b, and the pressure sensor 13 detects this value. Therefore, even if the start switch is pressed, the control means has the heating means 4, the circulation device 5, and the deodorizing device. Do not activate 9. Then, when this heavy object is removed, the pressure drops to a predetermined pressure value.

When no heavy object is detected, the start is normal, so the air in the heating chamber heated by the heating means 4 is sent as hot air into the processing cylinder 6 by the circulation device 5. The hot air that has entered the processing cylinder 6 heats the waste plastic material. Heated waste plastic is bottom plate 1
Melt on 4. Then, the hot air is discharged from the circulation hole 7 in the lower part of the processing cylinder and discharged between the processing cylinder 6 and the inner container 8. Furthermore, the hot air rises between the inner container 8 and the processing cylinder 6,
It returns to the suction port of the circulation device 5 provided in the inner container 8 again. The temperature control of how to heat the inside of the processing cylinder 6 is
This is performed by ON-OFF controlling the heating means 4 according to the hot air temperature detected by the thermistor 3.

If the temperature detected by the thermistor 3 is high, 60
When the temperature exceeds ° C, this detection signal is sent to the control means, and the control means receiving this signal starts energizing the electromagnetic solenoid 2. The electromagnetic solenoid 2 closes and locks the lid 1 by this energization. Therefore, the lid 1 cannot be opened / closed when the inside of the processing cylinder 6 has a high temperature of 60 ° C. or higher. However, if the pressure sensor 13 suddenly detects a heavy object even during heating as shown by the curve c in FIG. 2, it is possible that a child, an animal, or the like has entered, so it is dangerous to keep it locked. is there. Therefore, the temperature detected by the thermistor 3 is 60 ° C.
Even if the above is the case, when the pressure sensor 13 detects a pressure equal to or higher than the lower limit pressure in the region B of FIG. 2, the control means immediately cuts off the energization of the electromagnetic solenoid 2 and releases the closure of the lid 1.

When the waste plastic material in the processing cylinder 6 is melted and the volume is reduced to some extent by the circulation of hot air, the control means sends the heating means 4 to the heating means 4 by pressing the heating stop switch on the operation panel on the main body exterior container 16. Stop energizing. At the same time, the driving of the circulation device 5 and the deodorizing device 9 is stopped. However, instead of pressing the heating stop switch, a timer may be provided in the control means, and the control means may automatically stop the energization of the heating means 4 when a predetermined time has elapsed after pressing the start switch. In this way, the heating and circulating treatment of the waste plastic material is completed.

When this heating circulation process is completed, the air pump 10 is subsequently driven. The air pump 10 has a period T ₁
Although it is in a deadline state during the stationary state, when receiving a drive command from the control means, the compressed gas is pressure-fed to the airbag type actuator 11 via the relay section 12. When gas is sent into the airbag-like bag of the airbag-type actuator 11, the airbag-like bag begins to expand and the bottom plate 14 of the processing cylinder 6 is started.
Push up. By the way, the relay unit 12 has a pressure sensor 13
Is provided, the detection signal detected by the pressure sensor is sent to the control means when the pressure inside the air bag type actuator 11 increases due to the pressurization of the air pump 10. The control means controls the pushing-up pressure of the airbag-type actuator 11 based on this detection signal. The pressurizing process by the air bag type actuator 11 is finished when the volume-reduced waste plastic material is solidified, and the air pump 10 is stopped. At the same time, the air bleeding solenoid valve 17 is turned on to bleed the compressed gas in the air bag-shaped bag. When the gas in the air bag is removed and the temperature detected by the thermistor 3 becomes 60 ° C. or less, the air release solenoid valve 17 is turned on and closed, and the air pump 10 is driven again to release the compressed gas into the air bag. Send in. This raises the bottom plate 14. When the bottom plate 14 rises to the lower portion of the lid body 1, the air pump 10 is stopped again and the blocked waste plastic material is taken out to complete all the processes.

As described above, according to the present embodiment, the volume of the waste plastic material can be safely and hygienically reduced by the simple structure and the simple operation at the place where the waste plastic material is generated. Moreover, it is extremely easy to handle the waste plastic material after it is made into a block-shaped lump.

[0026]

As can be seen from the above description, the waste plastic material treating apparatus of the present invention includes an air bag type actuator which is provided in the lower portion of the bottom plate and moves the bottom plate up and down to compress the waste plastic material. Since the air pump for sending the compressed gas is provided, the bottom plate can be lifted by the air bag type actuator to compress the waste plastic material, and the volume of the waste plastic material can be reduced.

Since the pressure sensor for detecting the pressure of the compressed gas sent to the air bag type actuator is provided,
It is possible to detect that a heavy object such as a child or an animal is accommodated in the processing cylinder and perform processing.

Since a temperature sensor for detecting the temperature inside the processing cylinder is provided and the lid covering the processing cylinder is closed when the temperature sensor reaches a predetermined temperature or higher, the lid is locked during heating.
There is no risk of human being burned when operating the waste plastic material processing device, because someone does not open the cover of the processing device and hot air circulating in the processing device flows out.

Further, since the control means for releasing the closing of the lid body by the detection signal from the pressure sensor is provided, the lid body is unlocked for safety.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of a waste plastic material processing apparatus according to an embodiment of the present invention.

FIG. 2 is a pressure change diagram when a heavy object enters the waste plastic material processing apparatus in one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lid 2 Electromagnetic solenoid 3 Thermistor 4 Heating means 5 Circulating device 6 Processing cylinder 7 Circulation hole 8 Inner container 9 Deodorizing device 10 Air pump 11 Air bag type actuator 12 Relay section 13 Pressure sensor 14 Bottom plate 15 Control box 16 Main body exterior container 17 Air Solenoid valve for extraction

Claims (4)

[Claims] 1. A processing cylinder for accommodating a waste plastic material on a bottom plate, an air bag type actuator provided under the bottom plate for vertically moving the bottom plate to compress the waste plastic material, and a compression for the air bag type actuator. A waste plastic material processing apparatus comprising: an air pump for sending gas; a circulation device for sending hot air into the processing cylinder for circulation; and a heating means for heating air. 2. A pressure sensor for detecting the pressure of the compressed gas sent to the air bag type actuator is provided to detect that a heavy object is stored in the processing cylinder. Waste plastic material processing equipment. 3. A temperature sensor for detecting the temperature inside the processing cylinder is provided, and when the temperature sensor reaches a predetermined temperature or higher, a lid for covering the processing cylinder is closed. Waste plastic processing equipment as described. 4. The waste plastic material processing apparatus according to claim 3, further comprising control means for releasing the closure of the lid body in response to a detection signal from the pressure sensor.