JPH11138541A - Pet bottle compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the amount of PET bottles, which can be scrapped in the same space, by a method wherein the PET bottle having all sizes and shapes are compressed by sucking the air within each PET bottle. SOLUTION: An axially slidable piston 3 is fittingly inserted in a cylinder 1. In some part of the cylinder 1 or of the piston 3, a first unidirectional valve 2, which blows the air within the cylinder outside and prevents the air outside the cylinder from flowing inside the cylinder at the reciprocating motion of the piston 3. At some part of the cylinder 1, an opening 11 for making the interior of the cylinder communicate with its exterior and a connector, to which a PET bottle is fitted and, in addition, a second unidirectional valve 13, which flows air within the cylinder and prevents the air within the cylinder from flowing back in the PET bottle at the reciprocating motions, is provided at the opening. The PET bottle 14 is mounted the cylinder so as to suck out the air in the PET bottle 14 through the reciprocating motion of the piston 3 in order to reduce the volume of the PET bottle 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for compressing an unnecessary PET bottle to save space at the time of disposal.
Used as a compressor.

[0002]

2. Description of the Related Art Conventionally, as a PET bottle compressor,
It consists of a saucer that receives the bottom of the PET bottle and a push plate with a hole at the center that presses the top of the PET bottle.A compressor that crushes the PET bottle by putting the PET bottle between the saucer and the push plate and pressing the push plate there were.
Other types of PET bottle compressors include a PET bottle placed on a saucer, and while the saucer is heated and the upper part of the PET bottle is pressed, the PET bottle is melted and contracted by heat.

[0003]

In the conventional compressor using the pressing plate, the compression cannot be performed well unless the shapes of the tray and the pressing plate match the shape of the plastic bottle to some extent.
The size and shape of the PET bottle that can be compressed by one compressor were limited. In addition, in the case of a compressor using heat, it is necessary to press down from above while applying heat each time using a gas stand or the like, so that the operability is poor and the use of fire is dangerous.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an inexpensive compressor that can compress plastic bottles of various sizes and shapes by sucking air inside the plastic bottle and has excellent operability. The purpose is to do.

[0005]

According to the present invention, a cylinder and a piston slidable in the axial direction are inserted into the cylinder, and the shaft of the piston in the cylinder is inserted into the cylinder or a part of the piston. When reciprocating in the direction, the air inside the cylinder flows out and the first one-way valve that prevents the air outside the cylinder from flowing into the inside is provided, and a part of the cylinder communicates from inside the cylinder to outside. A coupling is provided at the end of the opening so that the mouth of the plastic bottle is in close contact with the opening, and when the piston reciprocates in the axial direction, the inside of the plastic bottle that is in close contact with the opening is provided. A second one-way valve is provided to prevent the air inside the cylinder from flowing back into the PET bottle, and to reciprocate the piston in the axial direction to suck the air inside the PET bottle. , Characterized in that the external atmospheric pressure reduces the volume of the PET bottle.

[0006]

In the plastic bottle compressor according to the present invention, the cap of the plastic bottle that has become unnecessary is removed, and the mouth of the plastic bottle is attached to the opening of the cylinder with the coupler of the compressor so as to be in close contact with the opening. By moving the piston back and forth in the axial direction, the air in the cylinder flows out to the outside, and the inflow of air from the outside into the cylinder is prevented by the first one-way valve. And the pressure in the plastic bottle communicating with the inside of the cylinder also decreases, and the PET bottle having a lower strength than the cylinder is compressed by the external pressure. By repeating the reciprocating movement of the piston in the axial direction, the second one-way valve provided at the opening of the cylinder prevents backflow of air from inside the cylinder into the plastic bottle, and air sucked from inside the plastic bottle. Is discharged to the outside through the cylinder, the PET bottle is efficiently compressed, and the initial volume can be greatly reduced.

[0007]

FIG. 1 is a side sectional view of a first embodiment of a compressor according to the present invention. Inside a cylinder 1 is an annular first cylinder slidably fitted on the inner surface of the cylinder 1. A piston 3 consisting of a directional valve 2 is inserted. The outer peripheral portion of the first one-way valve 2 is inclined toward the right chamber 4 of the cylinder 1 so that it can flow out of the left chamber 5 to the right chamber 4 of the cylinder 1 and prevent flow from the right chamber 4 to the left chamber 5. Have the function to be.

A piston rod 6 is connected to the piston 3. The piston rod 6 extends outside a bearing lid 7 attached to one end of the cylinder cylinder 1, and an operation handle 8 is provided at the end. I have. A through hole 9 is provided in the center of the bearing lid 7, and the piston rod 6 is inserted through the through hole 9.
Can reciprocate in the axial direction. Further, a slight gap H is provided between the through hole 9 of the bearing lid 7 and the piston rod 6.
When the piston 3 is moved in the axial direction, air flows between the right chamber 4 of the cylinder cylinder 1 and the outside.

[0009] Springs 10a and 10b are disposed on the outer periphery of the piston rod 6 with a bearing lid 7 interposed between the outside and the inside of the cylinder cylinder 1, so that the piston rod 6 can reciprocate in the axial direction. When the stroke end is reached, it serves to interfere with the impact.

At the other end of the cylindrical cylinder 1, a cylinder cylinder 1
1 having an opening 11 communicating from the left chamber 5 to the outside
The opening 11 is provided with a second one-way valve 13 that can flow into the left chamber 5 from the outside of the cylinder cylinder 1 and is prevented from flowing out of the left chamber 5 to the outside. A clip-type coupler 16 for gripping the mouth 15 of the plastic bottle 14 is provided outside the lid 12. The connecting tool 16 is formed in a fork shape with two tips, hooks the enlarged diameter portion 17 at the base of the mouth of the plastic bottle 14, is urged by a spring 18 about the fulcrum S, and Is brought into close contact with the opening 11 of the lid 12.
A sealing member 19 is provided on the lid 12 to increase airtightness and prevent air from flowing out.

When the PET bottle 14 is compressed,
As shown in FIG. 2, the connecting tool 16 is pushed about the fulcrum S as shown by a two-dot chain line P, the enlarged diameter portion 17 at the base of the mouth of the plastic bottle 14 is hooked, and the mouth portion 15 is attached to the lid 12 in close contact. . Then, when the piston rod 6 is pulled by the operating handle 8, the piston 3 moves from the left chamber 5 side to the right chamber 4 side, and the volume of the left chamber 5 of the cylinder 1 expands. 2
Since the inflow of air from the right chamber 4 of the cylinder 1 is prevented by the pressure, the pressure of the left chamber 5 of the cylinder 1 is reduced, and the air inside the plastic bottle 14 communicated by the opening 11 is indicated by an arrow. Suction as shown in A
The lower strength PET bottle 14 is compressed by the external pressure. At this time, the air in the right chamber 4 of the cylinder cylinder 1 is discharged to the outside through the gap H between the through hole 9 of the bearing lid 7 and the piston rod 6 as shown by the arrow B.

Next, when the piston rod 6 is pushed by the operating handle 8 as shown in FIG. 3, the piston 3 moves from the right chamber 4 side to the left chamber 5 side, and the air in the left chamber 5 of the cylinder cylinder 1 is released. Is
The backflow to the plastic bottle 14 is prevented by the second one-way valve 13 provided in the opening 11 of the lid 12, and the first one-way valve 2 provided in the piston 3 allows the cylinder to move as shown by arrow C. It flows out of the left chamber 5 of the cylinder 1 to the right chamber 4. At this time, the PET bottle 14 in which the backflow of the air is prevented by the second one-way valve 13 maintains the compressed shape.

[0013] Again, using the operating handle 8, the piston rod 6
Is pulled, the PET bottle 14 is further compressed by the same action as described above, and by repeating this operation, the PET bottle 14 is compressed until the air in the PET bottle 14 is exhausted. Since the compressed PET bottle 14 exceeds the elastic deformation limit of the material, the compressed shape can be maintained even if the mouth portion 15 of the PET bottle 14 is removed from the connecting member 16, and the initial volume can be greatly reduced. .

FIG. 4 shows a second embodiment in which the function of the first one-way valve 2 provided on the piston 3 of the first embodiment is provided in a part of the lid 12, and is a cylinder cylinder. A piston 3 having an annular seal 20 slidably fitted on the inner surface of the cylinder tube 1 is inserted into the inside of the cylinder seal 1.
Is in close contact with the inner surface of the cylinder tube 1 and always shuts off the left chamber 5 and the right chamber 4 of the cylinder tube 1. The lid 12 fitted to the other end of the cylinder cylinder 1 is provided with a second opening 21 communicating with the outside from the left chamber 5 of the cylinder cylinder 1 separately from the opening 11. A first one-way valve 22 is provided which can flow out of the left chamber 5 of the cylinder cylinder 1 to the outside and is prevented from flowing into the left chamber 5 from the outside.

The other structure is the same as that of the first embodiment. When the same operation as that of the first embodiment is performed, in the first embodiment, the air in the left chamber 5 of the cylinder 1 is supplied to the piston 3. After flowing out to the right chamber 4 by the first one-way valve 2 provided,
In the second embodiment, a first one-way valve 22 provided in a second opening 21 of the lid 12 causes the left chamber 5 of the cylinder cylinder 1 to flow out through the clearance H of the bearing lid 7. Air flows directly to the outside.

Although the plastic bottle 14 can be compressed by the same function and the same operation in both the first and second embodiments, the annular seal 20 of the piston 3 and the second opening 21 of the lid 12 are used in the case of the second embodiment. Although the first one-way valve 22 is required, in the first embodiment only the first one-way valve 2 of the piston 3 is required, so that the structure can be simplified.

FIG. 5 shows a third embodiment in which the outer peripheral portion of the first one-way valve 2 provided on the piston 3 of the first embodiment is inclined toward the left chamber 5 of the cylinder cylinder 1. The first one-way valve 2 has a function of being able to flow out of the right chamber 4 of the cylinder cylinder 1 to the left chamber 5 and of preventing the inflow from the left chamber 5 to the right chamber 4. A piston rod 6 is connected to the piston 3. The piston rod 6 extends outside a bearing lid 7 attached to one end of the cylinder cylinder 1, and an operation handle 8 is provided at the end. A through-hole 9 is provided in the center of the bearing lid 7, and the piston rod 6 can reciprocate in the axial direction through the through-hole 9. An annular seal 23 is provided between them,
The right chamber 4 of the cylinder tube 1 is always shut off from the outside.

An opening 11 communicating with the right chamber 4 of the cylinder cylinder 1 to the outside is provided in a part of the bearing lid 7.
1 is provided with a second one-way valve 13 which can flow out of the right chamber 4 of the cylinder tube 1 to the outside and is prevented from flowing into the right chamber 4 from the outside. A connector 16 similar to that of the first embodiment is provided outside the opening 11. The other end of the cylinder 1 has an opening 2 communicating with the outside from the left chamber 5 of the cylinder 1.
4 is fitted.

When the PET bottle 14 is compressed,
After attaching the plastic bottle 14, the piston rod 6 is pushed by the operating handle 8. The piston 3 moves from the right chamber 4 side to the left chamber 5
Side, and the volume of the right chamber 5 of the cylinder cylinder 1 expands, but since the first one-way valve 2 blocks air from flowing from the left chamber 5 of the cylinder cylinder 1, the cylinder cylinder 1
The pressure in the right chamber 4 decreases, the air inside the plastic bottle 14 communicating with the opening 11 is sucked, and the plastic bottle 14 is compressed by the outside air pressure. At this time, the air in the left chamber 5 of the cylinder 1 is discharged outside through the opening 24 of the lid 25 fitted to the other end of the cylinder 1.

Next, the operating rod 8 is used to move the piston rod 6
, The piston 3 moves from the left chamber 5 to the right chamber 4, and the air in the right chamber 4 of the cylinder cylinder 1 is directed to the PET bottle 14 by the second one-way valve 13 provided in the opening 11. Is flowed out from the right chamber 4 of the cylinder cylinder 1 to the left chamber 5 by the first one-way valve 2 provided on the piston 3. At this time, the PET bottle 14 in which the backflow of the air is prevented by the second one-way valve 13 maintains the compressed shape. When the piston rod 6 is pulled again by the operation handle 8, the plastic bottle 13 is further compressed by the same operation as described above, and by repeating this operation, the plastic bottle 13 is compressed until the air in the plastic bottle 14 is exhausted.

In the first and second embodiments, the plastic bottle 14 is compressed when the piston 3 is pulled. In the third embodiment, the plastic bottle 14 is compressed when the piston 3 is pressed. It becomes a structure to be done. The first,
Although there is a difference in the operability between the second embodiment and the third embodiment, the basic principle and structure using the suction action of the two one-way valves and the pistons are the same, and both of them are plastic bottles 14.
Can be easily compressed.

Further, in the structure of the third embodiment, the function of the first one-way valve 2 provided on the piston 3 is changed similarly to the difference between the first embodiment and the second embodiment. Even in the case where the plastic bottle 14 is partially provided, the plastic bottle 14 can be compressed by the same function and the same operation as those of the third embodiment.

In the above-described embodiment, the connecting member 16 for gripping the mouth portion 15 of the plastic bottle 14 is of a clip type having a fork shape having two tips. Any structure may be used as long as it can be held in close contact. Further, since a male screw 26 is formed in the mouth portion 15 of the PET bottle 14 as shown in FIG. 6, the connecting portion is formed with a female screw 27 that fits into the male screw 26, and is integrated with the lid 12. It is also possible to make it into a coupling tool.

The structure of the first and second one-way valves 2, 13, and 22 is not limited to the lip shape, but can be made to flow only in one direction, such as a method using a ball or a spring, and flow in the opposite direction. Any method can be used as long as it can be prevented. Also,
The piston 3 of the above embodiment is designed to operate the operation handle 8 by hand. However, the basic structure of the piston 3 is the same as that of FIG. May be held by a holding table 28, and a pedal 29 for moving the piston rod 6 starting from one end of the holding table 28 may be provided at an end of the piston rod 6 to perform a stepping method.

[0025]

According to the plastic bottle compressor of the present invention, even if the size and shape of the plastic bottle are different, the shape of the mouth of the plastic bottle is standardized and the same shape. PET bottles of size and shape,
Attached to the compressor of the present invention to ensure compression

Further, in the present invention, since the air inside the plastic bottle can be compressed until it is completely sucked, the volume equivalent to the internal space of the plastic bottle is compressed, and the plastic bottle can be discarded in the same space. Can be greatly increased.

Further, in the present invention, a method of sucking the internal air is not a method of deforming and compressing the plastic bottle material by applying an external force, but a method of sucking the internal air. Since the force for operating the piston is small, women and children can easily suck and compress.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional side view showing a use state of the first embodiment of the present invention.

FIG. 3 is a sectional side view showing a use state of the first embodiment of the present invention.

FIG. 4 is a side sectional view of a second embodiment of the present invention.

FIG. 5 is a side sectional view of a third embodiment of the present invention.

FIG. 6 is a cross-sectional view of a case where the attachment of the present invention is of a spiral type.

FIG. 7 is a view when the operating handle of the present invention is used as a pedal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder cylinder 2 1st one-way valve part 3 Piston 6 Piston rod 7 Bearing lid 8 Operating handle 11 Opening 12 Lid 13 2nd one-way valve 14 PET bottle 16 Connector 21 Second opening 22 First Directional valve 25 Lid

Claims (1)

[Claims] 1. A cylinder and a piston slidable in the axial direction are fitted into the cylinder, and the piston is inserted into the cylinder or a part of the piston when the piston reciprocates in the cylinder in the axial direction. A first one-way valve is provided for discharging air inside the cylinder to the outside and preventing air outside the cylinder from flowing into the inside; a part of the cylinder has an opening communicating from the inside of the cylinder to the outside; At the end of the part is provided a connector for bringing the mouth of the PET bottle into close contact, and when the piston reciprocates in the axial direction at the opening, the air in the PET bottle closely contacted with the opening flows into the cylinder. ,
A second one-way valve that prevents air inside the cylinder from flowing back into the PET bottle is provided, and the piston reciprocates in the axial direction to suck the air inside the PET bottle and reduce the volume of the PET bottle due to the external pressure. Let the PET bottle compressor.