Device for emptying and volume reduction of pet plastic bottles
By designing a PET plastic bottle emptying and volume reduction device, which utilizes a hydraulic system and a dispersing device to work together, the problem of residual liquid in PET plastic bottles affecting their recycling value is solved. This achieves liquid emptying and bottle volume reduction, thereby improving recycling efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANGJIAGANG BEIER MACHINERY CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-16
AI Technical Summary
Residual liquid inside PET plastic bottles affects their recycling value and transportation, and is difficult to empty effectively, resulting in low efficiency of cleaning and recycling equipment.
A device for emptying and reducing the volume of PET plastic bottles was designed, which includes a hydraulic pusher, a dispersing device, a bottle breaking device, and a filter hole. The hydraulic system controls the coordinated operation of each component to achieve liquid extrusion and bottle volume reduction.
It effectively empties residual liquid from PET plastic bottles, reduces bottle volume, facilitates transportation and subsequent cleaning and recycling, and improves recycling efficiency.
Smart Images

Figure CN224360502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of PET plastic bottle recycling equipment, specifically to a PET plastic bottle emptying and volume reduction device. Background Technology
[0002] PET plastic bottles are a recyclable and environmentally friendly material. Through recycling, waste PET plastic bottles can be cleaned, dried, and granulated to obtain recycled PET material. This material can be reused to produce new PET plastic bottles or other products, reducing dependence on virgin resources and lowering environmental pollution. Secondly, economically, recycling waste PET plastic bottles reduces the demand for new raw materials, thereby lowering production costs. However, due to the wide variety of types of recycled PET plastic bottles and the presence of residual liquid inside, sometimes exceeding the weight of the bottle itself, this not only affects transportation but also significantly reduces the recycling value of such bottles and even impacts the use of subsequent cleaning and recycling equipment. Therefore, those skilled in the art have provided PET plastic bottle emptying and volume reduction devices to address the problems mentioned in the background section. Summary of the Invention
[0003] The purpose of this invention is to provide a device for emptying and reducing the volume of PET plastic bottles, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: It includes a base frame, a working chamber on the base frame, a feed hopper on the working chamber, a hydraulic pusher slidably connected to one end of the working chamber, a three-section pusher hydraulic cylinder drivingly connected to the hydraulic pusher, a discharge port on the other end of the working chamber, a dispersing device installed at the discharge port, the dispersing device including a dispersing shaft installed in the working chamber, a dispersing motor drivingly connected to the dispersing shaft, and dispersing blades evenly distributed on the dispersing shaft; a bottle breaking device is provided on one side of the feed hopper, the bottle breaking device including a bottle breaking frame, a perforated plate installed at the bottom of the bottle breaking frame, and perforated holes evenly distributed on the perforated plate. Guide sleeves are installed on both sides of the perforated plate, and guide rods are slidably inserted inside the guide sleeves. The upper end of the guide sleeve is fixed to the guide end plate, and a perforating hydraulic cylinder is hinged to the guide end plate. The perforating hydraulic cylinder is hinged to the bottle breaking frame. Several perforating needles that cooperate with the perforation holes are evenly fixed at the bottom of the guide end plate. Several filter holes are evenly arranged at the bottom of the working chamber, corresponding to the bottle breaking device. Two movable gates spanning the working chamber are set between the bottle breaking device and the dispersing device. The movable gates are respectively connected to the gate hydraulic cylinders on both sides of the working chamber. The three-section pusher hydraulic cylinder, gate hydraulic cylinder and perforating hydraulic cylinder are respectively connected to the hydraulic station pipeline.
[0005] Furthermore, a collection hopper is installed below the filtrate hole, and a drain outlet is provided at the bottom of the collection hopper.
[0006] The beneficial effects of this utility model after adopting the above structure are as follows: the PET plastic bottle emptying and volume reduction device of this utility model can empty the residual liquid in the PET plastic bottle and can compress and reduce the volume of the PET plastic bottle to a certain extent, which facilitates transportation and subsequent cleaning and recycling. Attached Figure Description
[0007] Figure 1 This is a structural diagram of the present invention;
[0008] Figure 2 yes Figure 1 Top view;
[0009] Figure 3 yes Figure 1 Enlarged view of part A in the image.
[0010] Explanation of reference numerals in the attached figures:
[0011] 1. Base frame; 2. Working chamber; 3. Hydraulic pusher; 4. Three-section pusher hydraulic cylinder; 5. Hydraulic station; 6. Feed hopper; 7. Bottle breaking device; 8. Filter hole; 9. Collection hopper; 10. Drain outlet; 11. Moving gate; 12. Gate hydraulic cylinder; 13. Dispersion device; 14. Discharge outlet; 15. Bottle breaking frame; 16. Through hole plate; 17. Through hole; 18. Guide slide sleeve; 19. Guide slide rod; 20. Guide end plate; 21. Through hole hydraulic cylinder; 22. Through needle; 23. Dispersion shaft; 24. Dispersion motor; 25. Dispersion blade. Detailed Implementation
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] See as Figure 1 —— Figure 3As shown, this specific embodiment adopts the following technical solution: It includes a base frame 1, a working chamber 2 is provided on the base frame 1, a feeding hopper 6 is provided on the working chamber 2, a hydraulic pusher 3 is slidably connected to one end of the working chamber 2, a three-section pusher hydraulic cylinder 4 is driven and connected to the hydraulic pusher 3, the three-section pusher hydraulic cylinder 4 can drive the hydraulic pusher 3 to extend three strokes of different lengths, a discharge port 14 is provided at the other end of the working chamber 2, a dispersing device 13 is installed at the discharge port 14, the dispersing device 13 includes a dispersing shaft 23, the dispersing shaft 23 is installed in the working chamber 2, a dispersing motor 24 is driven and connected to the dispersing shaft 23, dispersing blades 25 are evenly distributed on the dispersing shaft 23, the dispersing motor 24 drives the dispersing shaft 23 and the dispersing blades 25 to rotate, dispersing PET plastic bottles.
[0014] A bottle-breaking device 7 is provided on one side of the feed hopper 6. The bottle-breaking device 7 includes a bottle-breaking frame 15. A perforated plate 16 is installed at the bottom of the bottle-breaking frame 15. The perforated plate 16 is provided with evenly distributed perforated holes 17. Guide sleeves 18 are installed on both sides of the perforated plate 16. Guide slide rods 19 are slidably inserted in the guide sleeves 18. The upper end of the guide sleeves 18 is fixed on the guide end plate 20. A perforated hydraulic cylinder 21 is hinged on the guide end plate 20. The perforated hydraulic cylinder 21 is hinged on the bottle-breaking frame 15. Several perforated needles 22 that cooperate with the perforated holes 17 are evenly fixed at the bottom of the guide end plate 20. The perforated hydraulic cylinder 21 pushes the perforated needles 22 to move, so that the perforated needles 22 extend through the entire working cavity 2 or retract to the initial position.
[0015] At the bottom of the working chamber 2, a plurality of filter holes 8 are evenly arranged at the position corresponding to the bottle breaking device 7. A liquid collecting hopper 9 is installed below the filter holes 8, and a drain outlet 10 is provided at the bottom of the liquid collecting hopper 9 for discharging the residual liquid squeezed out of the PET plastic bottle.
[0016] Two movable gates 11 spanning the working chamber 2 are provided between the bottle breaking device 7 and the dispersing device 13. The movable gates 11 are respectively connected to the gate hydraulic cylinders 12 on both sides of the working chamber 2. The gate hydraulic cylinders 12 drive the movable gates 11 to close so as to break the bottle and squeeze out the liquid, or to open them to enter the dispersing process.
[0017] The three-section pusher hydraulic cylinder 4, gate hydraulic cylinder 12 and perforation hydraulic cylinder 21 are respectively connected to the hydraulic station 5 pipeline, and the hydraulic station 5 provides power to the three-section pusher hydraulic cylinder 4, gate hydraulic cylinder 12 and perforation hydraulic cylinder 21 respectively.
[0018] The working principle of this utility model is as follows: PET plastic recycling bottles containing residual liquid enter the working chamber 2 through the feed hopper 6. Driven by the hydraulic station 5, the perforating hydraulic cylinder 21 is in a retracted state, the moving gate 11 is closed, and the hydraulic pusher 3 moves to the right. Under the combined action of the moving gate 11 and the hydraulic pusher 3, the PET plastic bottles are gradually compressed and tightened, accumulating below the bottle breaking device 7. When the hydraulic pusher 3 moves to the set position, the three-stage pusher hydraulic cylinder 4 extends to the first stroke, and the perforating hydraulic cylinder 21 pushes the piercing needle 22 downward, allowing the piercing needle 22 to penetrate the entire working chamber 2. After the piercing needle 22 retracts to the initial position, the three-stage pusher hydraulic cylinder 4... Cylinder 4 extends to the second stroke and holds for a certain period of time to squeeze the residual liquid in the PET plastic bottle out of the bottle body. The squeezed residual liquid flows into the collection hopper 9 and is discharged from the equipment through the drain port 10. After the set time is reached, the moving gate 11 opens, the dispersing device 13 is started, and the three-stage pusher hydraulic cylinder 4 continues to extend to the right until it reaches the third stroke. During the extension of the three-stage pusher hydraulic cylinder 4, the emptied and reduced-volume PET plastic bottle also moves to the right. Under the rotation of the dispersing shaft 23 on the dispersing device 13, the dispersing blades 25 continuously knock on the PET plastic bottle to achieve the purpose of dispersing. The PET plastic bottle is finally discharged from the equipment through the discharge port 14.
[0019] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A PET plastic bottle emptying and volume reduction device, characterized in that: It includes a base frame, on which a working chamber is mounted, and a feed hopper is mounted on the working chamber. A hydraulic pusher is slidably connected to one end of the working chamber, and a three-section hydraulic cylinder is driven by the hydraulic pusher. A discharge port is located at the other end of the working chamber, and a dispersing device is installed at the discharge port. The dispersing device includes a dispersing shaft, which is installed in the working chamber. A dispersing motor is driven by the dispersing shaft, and dispersing blades are evenly distributed on the dispersing shaft. A bottle-breaking device is located on one side of the feed hopper, and the bottle-breaking device includes a bottle-breaking frame. A perforated plate is mounted at the bottom of the bottle-breaking frame, and the perforated plate has evenly distributed perforations. Perforations are mounted on both sides of the perforated plate. The device is equipped with a guide sleeve, in which a guide rod is slidably inserted. The upper end of the guide sleeve is fixed to a guide end plate, and a perforated hydraulic cylinder is hinged to the guide end plate. The perforated hydraulic cylinder is hinged to the bottle-breaking frame. Several perforating needles that mate with the perforating holes are evenly fixed at the bottom of the guide end plate. Several filter holes are evenly arranged at the bottom of the working chamber, corresponding to the bottle-breaking device. Two movable gates spanning the working chamber are provided between the bottle-breaking device and the dispersing device. The movable gates are respectively connected to the gate hydraulic cylinders on both sides of the working chamber. The three-section pusher hydraulic cylinder, gate hydraulic cylinder, and perforating hydraulic cylinder are respectively connected to the hydraulic station pipeline.
2. The PET plastic bottle emptying and volume reduction device according to claim 1, characterized in that: A collection hopper is installed below the filtrate hole, and a drain outlet is provided at the bottom of the collection hopper.