JPH11226953A - Waste plastic material reduction equipment - Google Patents

Abstract

(57) [Summary] [Problem] By providing a hot air generating section in the opening / closing lid, the heat circulation path can be eliminated, so that the overall configuration can be simplified and the cost of the entire product can be reduced, and a simple structure and low cost can be realized. The purpose of the present invention is to provide a waste plastic material volume reducing device. SOLUTION: A processing container 3 having an opening at an upper portion for storing the waste plastic material 2, an openable and closable cover 18 for covering the processing container 3 from above, and a hot air for softening the waste plastic material 2 are generated. A circulating hot air generator 14;
A pressurizing section 6 provided at the bottom of the processing container 3 for pressurizing the soft waste plastic material 2 to reduce the volume thereof; the hot air generating section 14 is provided on the opening / closing lid 18 to circulate hot air. Is unnecessary, and miniaturization can be achieved.

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 reducing apparatus for easily softening and reducing the volume of waste plastic material such as styrofoam generated in homes, offices, shops and the like. It is.

[0002]

2. Description of the Related Art Conventionally, this kind of waste plastic material volume reducing device is generally as shown in Japanese Patent Application Laid-Open No. 9-201824. The apparatus includes a processing container having an opening / closing lid and storing and softening waste plastic material, a pressurizing unit provided at a bottom side of the processing container to pressurize and soften the softened waste plastic material, An air pumping section for operating the pressure section, a pressure adjusting valve provided in the air exhaust section of the pressurizing section, a heat circulation path communicating with the processing vessel and circulating hot air, and a hot air flowing through the heat circulation path. A hot-air generator for generating and circulating is provided on the side of the processing container in the main body. Close the open / close lid, move the hot air from the hot air generating unit into the processing vessel through the heat circulation path by a signal from the control unit, circulate, and heat the waste plastic material.
Close the pressure control valve, operate the air pressure feeding section to send air to the pressurizing section, compress the waste plastic material with the pressurizing section and the opening and closing lid, open the pressure regulating valve after the volume reduction operation is completed, The air in the pressurizing section was exhausted from the exhaust section.

[0003]

However, the conventional waste plastic material volume reducing device has an increased number of components for forming a heat circulation path through which hot air circulates, and furthermore, a hot air for sending hot air into the processing vessel. There are problems such as an increase in processing cost of providing a communication hole with the circulation path in the processing container, which leads to an increase in cost of the entire product and a complicated overall configuration.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an apparatus for reducing the volume of waste plastic material with a simple structure and at low cost.

[0005]

In order to achieve the above object, the present invention provides a processing container having an opening at an upper portion for storing a waste plastic material, an openable and closable cover for covering the processing container from above, A hot-air generating unit that generates hot air for softening the waste plastic material, and a pressurizing unit that is provided at the bottom of the processing container and pressurizes and softens the softened waste plastic material, and includes the hot-air generating unit. It is provided on the opening / closing lid, and can eliminate the heat circulation path, thereby realizing simplification of the overall configuration and cost reduction of the entire product.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION
A processing container having an opening at the top and containing waste plastic material, an openable and closable lid that covers the processing container from above,
A hot air generating unit that generates hot air for softening the waste plastic material, and a pressurizing unit that is provided at the bottom of the processing container and pressurizes and reduces the volume of the softened waste plastic material,
By providing the hot-air generating section in the opening / closing lid, the heat circulation path can be eliminated, so that the overall configuration is simplified and the cost of the entire product is reduced.

The invention according to claim 2 of the present invention is characterized in that when a waste plastic material is pressurized and reduced in volume by covering the hot air generating portion with a cover provided with a plurality of ventilation holes for hot air circulation, the hot air is generated. This protects the part from waste plastic material and also serves as a pressing part at the time of pressurization, which simplifies the entire configuration and reduces the cost of the entire product.

According to a third aspect of the present invention, an exhaust portion communicating with the outside air and sealed when the opening / closing lid is closed is provided in the main body, and the exhaust portion and the pressurizing portion are communicated with each other to open the opening / closing lid. In some cases, the exhaust portion is opened, so that a pressure control valve is not used in the exhaust portion, and the functional components for exhaust can be eliminated, thereby realizing cost reduction.

According to a fourth aspect of the present invention, at least one of the bottom of the cover and the inner wall of the processing container is provided with a non-adhesive material, and the cover is formed by heating, softening and shrinking the waste plastic material. The purpose is to prevent sticking to the pressing portion and the inner wall surface of the processing container, and to facilitate opening and closing of the opening / closing lid after contraction of the waste plastic material, and to facilitate removal from the processing container.

According to a fifth aspect of the present invention, the cover is formed in a substantially mortar shape so that the outer diameter of the bottom is smaller than that of the upper portion, and a plurality of ventilation holes are formed in the side wall of the cover. By providing ventilation holes on the side, the ventilation holes are prevented from being blocked by the waste plastic material, and the inclined sides make it easier for hot air to hit the waste plastic material, shortening the heating time Is what you do.

According to a sixth aspect of the present invention, after the waste plastic material in the processing container is heated to a predetermined temperature for a predetermined time, the pressurizing section is operated, and the waste plastic material is heated to a predetermined temperature. By maintaining for a predetermined time, the waste plastic material can be heated and softened without being affected by initial temperature conditions, voltage fluctuations, and the like, and the volume of the waste plastic material can be sufficiently reduced.

According to a seventh aspect of the present invention, there is provided an air pumping section for operating a pressurizing section, and after operating the air pumping section continuously for a predetermined time, the air pumping section is operated at predetermined time intervals. By repeatedly operating and stopping, the pressure in the pressurizing section can be maintained at a predetermined value for approximately a predetermined time, and the volume of the waste plastic material can be sufficiently reduced.

In the invention according to claim 8 of the present invention, the pressurizing section is formed by an airtight bag provided at the bottom in the processing vessel and communicating with the air pressure feeding section, and a movable plate disposed above the airtight bag. A non-adhesive material is applied to the surface of the movable plate that comes into contact with the waste plastic material. The purpose is to prevent the waste plastic material after shrinkage from sticking to the movable plate by heating and softening, and to facilitate removal from the processing container. Things.

According to a ninth aspect of the present invention, the gap between the inner wall of the processing container and the outer peripheral portion of the movable plate is made smaller than the thickness of the material of the airtight bag, and the movable plate moves up and down in the processing container. This is to prevent the airtight bag from entering the gap between the movable plate and the processing container, or to prevent damage caused by the airtight bag.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a side sectional view of a waste plastic material volume reducing apparatus according to the present invention. FIG. 2 is an operation time chart showing the operation of the waste plastic material volume reducing device, and FIG.
FIG.

In FIG. 1, reference numeral 1 denotes a main body of the waste plastic material reducing device.
Processing container 3 in which waste plastic material 2 is stored
Is provided on the bottom side of the processing container 3, and a pressurizing unit 6 including an airtight bag 4 and a movable plate 5 is provided. Further, the airtight bag 4, the air pressure feeding section 7, and the main body 1 provided on the upper side of the main body 1 are provided.
And an exhaust portion 8 for exhausting the air in the airtight bag 4 to the outside.
They are connected by an air pipe 9 to form a pressure path 10. On the upper side of the main body 1, an opening / closing lid 18 for opening and closing the upper part of the processing container 3 is provided, and the opening / closing lid 18 has a heater.
A hot air generator 14 including a fan 11 and a blower 12, a temperature detector 13 for detecting the temperature of the hot air in the hot air generator 14, a hot blast generator 14 that covers the hot air generator 14 in a substantially mortar shape, and has a plurality of hot air circulation A cover 17 having pores 15 and being provided with a non-adhesive material such as a fluorine treatment is provided on a pressing portion 16 which is a compression surface of the waste plastic material 2 on the outer surface. 19 is a control unit for operation control.

The operation and operation of the above configuration are as follows. The open / close lid 18 is opened, and the waste plastic material 2 is put into the processing container 3. Next, the opening / closing lid 18 is closed, and the control unit 1 is closed.
Under the control of 9, the heater 11 and the blower 12 are energized to start operation. Since the blower 12 is a centrifugal blower, the vent hole 15 of the cover 17 is communicated with the central suction portion of the fan of the blower 12 and the blowout portion on the outside of the fan as shown in FIG. Is heated and circulated through the cover 17 as shown by the arrow a in FIG.

As shown in the time chart of FIG. 2, the hot air temperature is detected by a temperature detector 13 for detecting the hot air temperature.
The control unit 19 controls so that 0 ° C. (= Tc) is maintained for 15 minutes (= T1). This is to maintain the surface temperature of the waste plastic material 2 at about 130 ° C. for a certain period of time. This control allows the waste plastic material 2 to be sufficiently heated and softened without being affected by initial conditions and voltage fluctuations. Can be. Further, as shown in FIG. 3, the cover 17 is formed in a mortar shape with a side surface inclination angle of about 15 ° and a plurality of ventilation holes 15 for circulating hot air are provided on the side surface. The hot air can easily hit the waste plastic material 2 and the heating time T1 can be shortened.

The temperature detector 13 detects 130 ° C. (= Tc) as 1
After maintaining for 5 minutes (= T1), the energization of the heater 11 is stopped by the signal from the control unit 19, and the operation of the air pressure feeding unit 7 is started. At this time, since the exhaust portion 8 in the pressurizing path 10 is provided at the main body 1 side joint portion when the opening / closing lid 18 is closed, when the opening / closing lid 18 is closed, the exhaust section 8 is closed and the pressurizing path 10 is closed. The inside is in a closed state. Therefore, the pressure in the pressurizing path 10 increases due to the operation of the air pumping section 7. Then, the movable plate 5 is raised by expanding the airtight bag 4 in the pressurizing section 6. The movable plate 5 rises in the processing container 3 and compresses the waste plastic material 2 with the pressing portion 16 in the cover 17 to reduce the volume.

As shown in the time chart of FIG. 2, the operation mode of the pneumatic feeding section 7 is to operate the pneumatic feeding section 7 continuously for a predetermined time T2 by a signal from the control section 19, and further thereafter,
The pneumatic feeding section 7 repeatedly stops and operates at predetermined time intervals T3 and T4. This is because, in order to sufficiently reduce the volume of the waste plastic material 2, it is necessary to maintain the pressure in the pressurizing unit 6 at a predetermined value for a predetermined time or more. This is an operation for preventing the pressure in the passage 10 from falling below the required minimum pressure value and maintaining the pressure above the required minimum pressure value for a predetermined time. It is for reducing the volume.

After the waste plastic material 2 is cooled by the blower 12, the open / close lid 18 is opened and the waste plastic material 2 is taken out of the processing container 3. By applying a non-adhesive material such as a fluorine treatment to the waste plastic pressing portion 16 of the cover 17, the inner wall surface of the processing container 3, and the contact surface of the movable plate 5 with the waste plastic material 2, the material is heated and softened to shrink. Of the waste plastic material 2, the cover pressing portion 16 and the inner wall surface of the processing container 3,
Sticking to the movable plate 5 can be prevented, and after the waste plastic material 2 shrinks, the opening / closing lid 18 can be easily opened and taken out of the processing container. At the moment when the opening / closing lid 18 is opened, the exhaust unit 8 is opened, and the air in the pressurizing path 10 is exhausted by the exhaust unit 8.
The pressure is more reliably released, the pressure in the pressure path 10 is instantaneously reduced, and the movable plate 5 is lowered in the processing container 3. By making the radial gap between the processing container 3 and the movable plate 5 smaller than the thickness of the material of the airtight bag 4, when the movable plate 5 moves up and down in the processing container 3, the gap between the movable plate 5 and the processing container 3 is reduced. Airtight bag 4 in the gap
Can be prevented from entering or causing damage.

[0023]

According to the first aspect of the present invention,
The provision of the hot air generating section on the opening / closing lid can eliminate the heat circulation path, and has the effect of simplifying the overall configuration and reducing the cost of the entire product.

According to the second aspect of the present invention, when the waste plastic material is pressurized and reduced in volume by covering the hot air generating portion with a cover provided with a plurality of ventilation holes for hot air circulation. The hot air generating section is protected from the waste plastic material and forms a pressing section at the time of pressurization. This has the effect of simplifying the overall configuration and reducing the cost of the entire product.

According to the third aspect of the present invention, an exhaust portion which communicates with the outside air and is closed when the opening / closing lid is closed is provided in the main body, and the exhaust portion and the pressurizing portion are communicated with each other. By opening the exhaust portion when the valve is opened, it is possible to abolish the functional component for exhaust and to achieve an effect of reducing costs.

According to the fourth aspect of the present invention, the non-adhesive material is applied to at least one of the bottom of the cover and the inner wall of the processing container, so that the cover pressing portion of the contracted waste plastic material is provided. And the inner wall of the processing container can be prevented from sticking to the inner wall of the processing container.

According to the fifth aspect of the present invention, the cover is formed in a substantially mortar shape so that the outer diameter of the bottom portion is smaller than that of the upper portion, and a plurality of ventilation holes are formed in the cover. The provision on the side walls prevents the ventilation holes from being blocked by the waste plastic material, and also has the effect of making it easier for hot air to hit the waste plastic material and shortening the heating time.

According to the sixth aspect of the present invention, after the waste plastic material is heated at a predetermined temperature for a predetermined time, the pressurizing unit is operated to be affected by initial temperature conditions, voltage fluctuations, and the like. And has the effect of reducing the volume of waste plastic material.

According to a seventh aspect of the present invention, the pressure in the pressurizing section is increased by operating the air pumping section continuously for a predetermined time and then repeatedly activating and stopping the air pumping section at predetermined time intervals. Can be maintained at a predetermined value for approximately a predetermined time, which has the effect of sufficiently reducing the volume of waste plastic material.

According to the invention of claim 8 of the present invention, the movable plate is provided with a non-adhesive material on the surface in contact with the softened waste plastic material. The purpose is to prevent sticking to the plate and has the effect of making it easier to remove from the processing container.

According to the ninth aspect of the present invention, the radial gap between the processing container and the movable plate is made smaller than the thickness of the material of the airtight bag. This has the effect of preventing the airtight bag from entering the gap between the movable plate and the processing vessel and preventing damage caused thereby.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a waste plastic material volume reducing device showing an embodiment of the present invention.

FIG. 2 is an operation time chart of the waste plastic material volume reducing device.

FIG. 3 is an external perspective view of the cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Waste plastic material 3 Processing container 5 Movable plate 6 Pressurizing part 7 Air pressure sending part 8 Exhaust part 10 Pressurizing path 14 Hot air generating part 15 Vent hole 16 Pressing part 17 Cover 18 Opening / closing lid 19 Control part

 ──────────────────────────────────────────────────の Continuing on the front page (72) Osamu Tanaka, Inventor Osamu Kadoma, Kadoma, Osaka 1006 Matsushita Electric Industrial Co., Ltd. In company

Claims (9)

[Claims] 1. A processing container having an opening at an upper portion for storing a waste plastic material, an openable and closable cover for covering the processing container from above, and a hot air generating unit for generating hot air for softening the waste plastic material. And a pressurizing unit provided at the bottom of the processing container to pressurize the softened waste plastic material to reduce its volume, and wherein the hot air generation unit is provided on the opening / closing lid. 2. The waste plastic material reducing device according to claim 1, wherein the hot air generating portion is covered with a cover having a plurality of ventilation holes for hot air circulation. 3. An exhaust unit communicating with the outside air and hermetically closed when the open / close lid is closed is provided in the main body, and the exhaust unit and the pressurizing unit are communicated with each other so that the exhaust unit is opened when the open / close lid is opened. The waste plastic material volume reducing device according to claim 1 or 2. 4. The waste plastic material reducing device according to claim 1, wherein a non-adhesive material is applied to at least one of a bottom portion of the cover and an inner wall of the processing container. 5. The cover according to claim 2, wherein the cover has a substantially mortar shape such that the outer diameter of the bottom portion is smaller than that of the upper portion, and a plurality of ventilation holes are provided in a side wall of the cover. The waste plastic material volume reducing device according to claim 1. 6. The waste plastic material reducing apparatus according to claim 1, wherein the pressurizing section is operated after heating the waste plastic material in the processing container to a predetermined temperature for a predetermined time. 7. An air pressure feeding unit for operating a pressurizing unit is provided,
The waste plastic material reduction according to any one of claims 1 to 6, wherein after continuously operating the air pumping unit for a predetermined time, the air pumping unit is repeatedly operated and stopped at predetermined time intervals. Storage device. 8. The pressurizing section is formed by an airtight bag provided at the bottom of the processing container and communicating with the air pressure feeding section, and a movable plate disposed above the airtight bag. The waste plastic material reduction device according to any one of claims 1 to 7, wherein a non-adhesive material is applied to a surface in contact with the waste plastic material. 9. The airtight bag according to claim 1, wherein a gap between an inner wall of the processing container and an outer peripheral portion of the movable plate in the pressurizing section is smaller than a thickness of the material of the airtight bag. Waste plastic material volume reduction equipment.