A cooling and conveying device for plastic bottle preform production
By using an atomizing nozzle and a fan-guided airflow structure in the plastic preform production device, the problem of uneven cooling in high temperature and high humidity environments of existing cooling devices has been solved, achieving efficient and uniform cooling and improving the cooling quality of plastic preforms.
Patent Information
- Application Number
- CN202522039554.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-23
AI Technical Summary
Existing plastic preform cooling devices are ineffective in high-temperature and high-humidity environments. Air cooling is inefficient, water cooling is prone to moisture residue and consumes a lot of resources, and the spray system is uneven with chaotic airflow, which affects the uniformity of cooling.
Cooling is achieved by combining atomizing nozzles and fans. A submersible pump sprays water from the tank onto the surface of the preform, and a fan guides the airflow to concentrate on the outside of the preform to accelerate water mist evaporation. Combined with a guide frame and a conical shroud, the airflow is accelerated to improve cooling efficiency.
It achieves uniform and efficient cooling, improves the cooling efficiency and quality of plastic preforms, and avoids moisture residue and resource waste.
Smart Images

Figure CN224675330U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cooling conveying devices, specifically a cooling conveying device for the production of plastic preforms. Background Technology
[0002] In the production of plastic preforms, the preforms after injection molding are usually at a high temperature and need to be cooled and solidified in a timely and uniform manner before entering subsequent processes (such as blow molding) to ensure the dimensional stability and mechanical properties of the product. Existing technologies include devices that use conveyor belts combined with cooling tunnels for continuous cooling. For example, some equipment uses forced air cooling by installing fans inside the tunnel, but simple air cooling has limited heat exchange efficiency, especially in high-temperature and high-humidity environments. Other designs use spray water cooling, but direct water cooling may leave residual moisture on the preform surface, requiring additional drying treatment and consuming a significant amount of water.
[0003] Furthermore, common spray systems suffer from uneven water flow distribution and difficulty in precisely controlling water volume, easily leading to localized overcooling or insufficient cooling. Conversely, poorly designed ventilation structures can cause chaotic airflow, low cold energy utilization, and even significant temperature gradients within the tunnel, affecting the uniformity of preform cooling. Therefore, improvements to existing technologies are necessary. Utility Model Content
[0004] The purpose of this invention is to provide a cooling and conveying device for the production of plastic preforms, which solves the problem of poor cooling effect on plastic bottles.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a cooling and conveying device for producing plastic preforms, comprising a transport seat, a tunnel cover fixedly connected to the upper end of the transport seat, a water tank fixedly connected to the upper right side of the tunnel cover, a sealing mechanism provided inside the water tank, a diversion pipe fixedly connected to the right end of the water tank, an atomizing nozzle fixedly connected to the lower end of the diversion pipe, a submersible pump fixedly installed inside the water tank, a fan fixedly installed at the upper end of the tunnel cover, two symmetrically distributed guide frames fixedly connected inside the tunnel cover, multiple evenly distributed conical covers fixedly connected to the outer side of the tunnel cover, a bent pipe fixedly connected to the outer side of the conical covers, multiple evenly distributed support rollers mounted inside the transport seat via bearings, a conveyor belt sleeved on the outer side of the support rollers, an installation strip fixedly connected to the left end of the tunnel cover, and a baffle fixedly connected to the lower end of the installation strip.
[0006] Preferably, the output end of the submersible pump is fixedly connected to the diverter pipe, and there are multiple atomizing nozzles. The multiple atomizing nozzles are evenly distributed at the lower end of the diverter pipe, and the multiple atomizing nozzles spray water mist, which can improve the spraying quality while reducing the water volume.
[0007] Preferably, a support frame is fixedly connected to the outside of the tunnel cover, and the support frame is fixedly connected to the diversion pipe, so that the support frame can support the diversion pipe.
[0008] Preferably, the bent pipe is fixedly connected to the tunnel cover, and the opening of the bent pipe faces the center of the conveyor belt, so that the bent pipe can concentrate the airflow on the outside of the bottle.
[0009] Preferably, a motor is fixedly installed on the outer side of the transport seat, and the output shaft of the motor is fixedly connected to the support roller, so that the motor can drive the support roller to rotate.
[0010] Preferably, the sealing mechanism includes a horizontal bar, which is fixedly connected to the upper end of the water tank. A connecting pin is slidably connected to the inside of the horizontal bar. A baffle is fixedly connected to the lower end of the connecting pin. A sealing disc is fixedly connected to the upper end of the baffle. A spring is provided on the outside of the connecting pin. The sealing disc is slidably connected to the water tank. The baffle contacts the water tank. The sealing disc seals the opening of the water tank.
[0011] Preferably, one end of the spring is fixedly connected to the crossbar, the other end of the spring is fixedly connected to the connecting pin, the connecting pin is fixedly connected to the sealing disc, and the spring can support the connecting pin through its elastic force.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model, by adding atomizing nozzles, a water tank, and a sealing mechanism to the tunnel cover, allows the water inside the water tank to be atomized and evenly sprayed onto the surface of the plastic bottles when they are transported by conveyor belt. The water is then evaporated by airflow, thereby effectively improving the cooling efficiency of the plastic bottles.
[0014] 2. This utility model adds a flow guide frame, a conical cover, and a curved pipe to the tunnel cover. After the airflow is guided by the fan, the airflow can be sprayed onto the outside of the plastic bottle after being guided and accelerated by the conical pipe and the curved pipe. This concentrates the airflow to blow onto the outside of the plastic bottle, which can further improve the quality of the plastic bottle. Attached Figure Description
[0015] Figure 1 The overall structure of this utility model is three-dimensional. Figure 1 ;
[0016] Figure 2 The overall structure of this utility model is three-dimensional. Figure 2 ;
[0017] Figure 3 For the present utility model Figure 1 Enlarged front sectional view of the water tank;
[0018] Figure 4 For the present utility model Figure 2 A three-dimensional magnified view of the conical tube;
[0019] Figure 5 For the present utility model Figure 3 Enlarged view of the structure of part A.
[0020] In the diagram: 1. Transport seat; 2. Tunnel cover; 3. Water tank; 4. Sealing mechanism; 5. Diverter pipe; 6. Atomizing nozzle; 7. Submersible pump; 8. Support frame; 9. Fan; 10. Flow guide frame; 11. Conical cover; 12. Bend; 13. Support roller; 14. Conveyor belt; 15. Motor; 16. Mounting strip; 17. Curtain; 41. Crossbar; 42. Connecting pin; 43. Baffle; 44. Sealing disc; 45. Spring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-5 A cooling and conveying device for producing plastic preforms includes a transport seat 1, a tunnel cover 2 fixedly connected to the upper end of the transport seat 1, a water tank 3 fixedly connected to the upper right side of the tunnel cover 2, a sealing mechanism 4 inside the water tank 3, a diversion pipe 5 fixedly connected to the right end of the water tank 3, an atomizing nozzle 6 fixedly connected to the lower end of the diversion pipe 5, a submersible pump 7 fixedly installed inside the water tank 3, a fan 9 fixedly installed at the upper end of the tunnel cover 2, two symmetrically distributed guide frames 10 fixedly connected inside the tunnel cover 2, multiple evenly distributed conical covers 11 fixedly connected to the outer side of the tunnel cover 2, a bent pipe 12 fixedly connected to the outer side of the conical covers 11, multiple evenly distributed support rollers 13 installed inside the transport seat 1 via bearings, a conveyor belt 14 sleeved on the outer side of the support rollers 13, an installation strip 16 fixedly connected to the left end of the tunnel cover 2, and a baffle curtain 17 fixedly connected to the lower end of the installation strip 16.
[0023] Please see Figure 1-5The output end of the submersible pump 7 is fixedly connected to the diversion pipe 5. There are multiple atomizing nozzles 6, which are evenly distributed at the lower end of the diversion pipe 5. The multiple atomizing nozzles 6 spray water mist, which can improve the spraying quality while reducing the water volume. A support frame 8 is fixedly connected to the outside of the tunnel cover 2. The support frame 8 is fixedly connected to the diversion pipe 5 and can support the diversion pipe 5. The bent pipe 12 is fixedly connected to the tunnel cover 2. The opening of the bent pipe 12 faces the center of the conveyor belt 14. The bent pipe 12 can concentrate the airflow on the outside of the bottle. A motor 15 is fixedly installed on the outside of the transport seat 1. The output shaft of the motor 15 is fixedly connected to the support roller 13. The motor 15 can drive the support roller 13 to rotate.
[0024] Please see Figure 1-5 The sealing mechanism 4 includes a horizontal bar 41. The horizontal bar 41 is fixedly connected to the upper end of the water tank 3. A connecting pin 42 is slidably connected to the inside of the horizontal bar 41. A baffle 43 is fixedly connected to the lower end of the connecting pin 42. A sealing plate 44 is fixedly connected to the upper end of the baffle 43. A spring 45 is provided on the outside of the connecting pin 42. The sealing plate 44 is slidably connected to the water tank 3. The baffle 43 is in contact with the water tank 3. The sealing plate 44 seals the opening of the water tank 3. One end of the spring 45 is fixedly connected to the horizontal bar 41. The other end of the spring 45 is fixedly connected to the connecting pin 42. The connecting pin 42 is fixedly connected to the sealing plate 44. The spring 45 can support the connecting pin 42 with its elastic force.
[0025] The specific implementation process of this utility model is as follows: In use, the plastic bottle is placed above the conveyor belt 14, and then the motor 15 is started. The motor 15 drives the support roller 13 to rotate, and the support roller 13 can drive the conveyor belt 14 to rotate. During the rotation of the conveyor belt 14, the plastic bottle can be transported. During the transportation process, the submersible pump 7 inputs water into the inside of the diversion pipe 5 and then sprays water mist onto the outside of the plastic bottle through the atomizing nozzle 6. At the same time, the water mist can absorb heat. Meanwhile, the plastic bottle enters the inside of the tunnel cover 2 after being guided by the guide frame 10. At the same time, the fan 9 is started, and the fan 9 sucks out the airflow inside the tunnel cover 2. After the suction force is generated inside the tunnel cover 2, the airflow enters the inside of the curved pipe 12 after being accelerated by the conical cover 11. Under the guidance of the curved pipe 12, it is accurately sprayed onto the outside of the plastic bottle to accelerate the evaporation of water mist. Thus, the plastic bottle can be cooled by the evaporation of water mist.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cooling and conveying device for producing plastic preforms, comprising a transport seat (1), characterized in that: A tunnel cover (2) is fixedly connected to the upper end of the transport seat (1). A water tank (3) is fixedly connected to the upper right side of the tunnel cover (2). A sealing mechanism (4) is provided inside the water tank (3). A diversion pipe (5) is fixedly connected to the right end of the water tank (3). An atomizing nozzle (6) is fixedly connected to the lower end of the diversion pipe (5). A submersible pump (7) is fixedly installed inside the water tank (3). A fan (9) is fixedly installed at the upper end of the tunnel cover (2). A... Two symmetrically distributed guide frames (10) are provided. Multiple uniformly distributed conical covers (11) are fixedly connected to the outside of the tunnel cover (2). A bent pipe (12) is fixedly connected to the outside of the conical cover (11). Multiple uniformly distributed support rollers (13) are installed inside the transport seat (1) through bearings. A conveyor belt (14) is sleeved on the outside of the support rollers (13). An installation strip (16) is fixedly connected to the left end of the tunnel cover (2). A curtain (17) is fixedly connected to the lower end of the installation strip (16).
2. The cooling and conveying device for producing plastic preforms according to claim 1, characterized in that: The output end of the submersible pump (7) is fixedly connected to the diversion pipe (5), and there are multiple atomizing nozzles (6), which are evenly distributed at the lower end of the diversion pipe (5).
3. The cooling and conveying device for producing plastic preforms according to claim 1, characterized in that: A support frame (8) is fixedly connected to the outside of the tunnel cover (2), and the support frame (8) is fixedly connected to the diversion pipe (5).
4. The cooling and conveying device for producing plastic preforms according to claim 1, characterized in that: The bend (12) is fixedly connected to the tunnel cover (2), and the opening of the bend (12) faces the center of the conveyor belt (14).
5. A cooling and conveying device for producing plastic preforms according to claim 1, characterized in that: A motor (15) is fixedly installed on the outside of the transport seat (1), and the output shaft of the motor (15) is fixedly connected to the support roller (13).
6. A cooling and conveying device for producing plastic preforms according to claim 1, characterized in that: The sealing mechanism (4) includes a horizontal bar (41). The upper end of the water tank (3) is fixedly connected to the horizontal bar (41). The horizontal bar (41) is slidably connected to the inside of the horizontal bar (41). The lower end of the connecting pin (42) is fixedly connected to a baffle (43). The upper end of the baffle (43) is fixedly connected to a sealing plate (44). A spring (45) is provided on the outside of the connecting pin (42). The sealing plate (44) is slidably connected to the water tank (3). The baffle (43) is in contact with the water tank (3).
7. A cooling and conveying device for producing plastic preforms according to claim 6, characterized in that: One end of the spring (45) is fixedly connected to the crossbar (41), and the other end of the spring (45) is fixedly connected to the connecting pin (42). The connecting pin (42) is fixedly connected to the sealing disc (44).