Extruder with cooling device
By installing a liquid-gas mixing joint inside the extruder barrel connecting flange, the problem of barrel deformation is solved by using the liquid-gas mixed flow for cooling, thus achieving equipment stability and cost savings.
Patent Information
- Application Number
- CN202422619606.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-29
AI Technical Summary
In the prior art, the extruder barrel undergoes localized deformation due to large temperature differences during water cooling, which affects the stability of the equipment.
A liquid-gas mixing joint is used to atomize the cooling medium into droplets and form a mixed flow with pressurized gas. Cooling is achieved through heat transfer enhancement effect and phase change heat transfer effect. The inlet and outlet of the cooling medium are set in the cylinder connecting flange, and the existing structure is used for cooling.
It effectively reduces the chance of cylinder deformation, saves costs, and improves equipment stability.
Smart Images
Figure CN223545876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of extruder cooling devices, and in particular to an extruder with a cooling device. Background Technology
[0002] During high-temperature extrusion, the extruder barrel temperature needs to be kept high, and a cooling device is required to prevent the barrel from overheating. Cooling devices generally use water cooling or air cooling. In water cooling, cooling water is circulated to cool the barrel and balance the temperature. However, due to the large temperature difference between the cooling water and the barrel, local deformation of the barrel can easily occur, affecting the stability of the equipment. Utility Model Content
[0003] To address the problem of barrel deformation caused by large temperature differences when using water cooling to cool the extruder barrel in existing technical solutions, this utility model provides an extruder with a cooling device.
[0004] This utility model provides the following technical solution: an extruder with a cooling device, comprising a barrel, the barrel having an inner cavity and a cooling medium flow channel surrounding the inner cavity, the cooling medium flow channel having a cooling medium inlet and a cooling medium outlet, connecting flanges at both ends of the barrel, the cooling medium inlet and the cooling medium outlet respectively disposed within the two connecting flanges, the cooling medium inlet having a liquid-gas mixing connector, the liquid-gas mixing connector having an air inlet chamber, and a liquid inlet pipe disposed in the center of the air inlet chamber; a nozzle being disposed at one end of the air inlet chamber facing the cooling medium flow channel, and an air inlet being disposed at the other end of the air inlet chamber, the air inlet being connected to an air supply device; one end of the liquid inlet pipe extending toward the nozzle and having a gap between it and the nozzle, and the other end of the liquid inlet pipe being connected to a liquid supply device.
[0005] Preferably, the end of the air intake chamber facing the cooling medium flow channel is a conical structure, and the nozzle is located at the end with the smaller area of the two bottom surfaces of the conical structure.
[0006] Preferably, the liquid-gas mixing joint is threadedly connected to the cooling medium inlet.
[0007] Preferably, the liquid-gas mixing joint is further provided with a limiting plate.
[0008] Preferably, the cooling medium outlet is provided with a discharge pipe.
[0009] The beneficial effects of this utility model are: by using a liquid-gas mixing joint to atomize the cooling medium into droplets and form a mixed flow with pressurized gas to complete heat exchange, the probability of cylinder deformation can be effectively reduced compared with the prior art; the cooling medium inlet and outlet are respectively set in the two connecting flanges of the cylinder, making full use of the existing structure and saving costs. Attached Figure Description
[0010] Figure 1 This is a cross-sectional view of one embodiment of the cylindrical body.
[0011] Figure 2 This is a cross-sectional view of one embodiment of a liquid-gas mixing connector.
[0012] Reference numerals: 10, cylinder; 11, inner cavity; 12, cooling medium flow channel; 121, cooling medium inlet; 122, cooling medium outlet; 13, connecting flange; 20, liquid-gas mixing joint; 21, air inlet chamber; 211, nozzle; 212, air inlet; 22, liquid inlet pipe; 23, limiting plate. Detailed Implementation
[0013] The embodiments of this utility model will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement them after reading this specification. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.
[0014] This utility model provides, for example Figure 1-2 An extruder with a cooling device is shown, comprising a barrel 10 with an inner cavity 11. A screw is rotatably mounted within the inner cavity 11 to extrude material. A cooling medium channel 12 surrounds the inner cavity 11 and has a cooling medium inlet 121 and a cooling medium outlet 122. The cooling medium flows within the cooling medium channel 12, carrying away some of the heat from the barrel 10. Specifically, both ends of the barrel 10 are provided with connecting flanges 13. Multiple barrels are interconnected via these flanges. The cooling medium inlet 121 and cooling medium outlet 122 are respectively located within the two connecting flanges 13 of the barrel 10. The two connecting flanges 13 protrude from the outer surface of the barrel 10 and have sufficient thickness and width to accommodate the cooling medium inlet 121 or cooling medium outlet 122, eliminating the need for additional piping connections and saving costs. The specific arrangement of the cooling medium channel 12 can be referenced in related technologies, generally in a spiral or S-shape surrounding the inner cavity 11. The cooling medium is typically pure water or softened water.
[0015] The cooling medium inlet 121 is also provided with a liquid-gas mixing connector 20. Please refer to... Figure 2The liquid-gas mixing joint 20 is provided with an air inlet chamber 21. One end of the air inlet chamber 21 facing the cooling medium flow channel 12 has a nozzle 211, and the other end has an air inlet 212. The air inlet 212 is connected to an air supply device, which can be an air compressor or a booster pump. A liquid inlet pipe 22 is also provided in the center of the air inlet chamber 21. One end of the liquid inlet pipe 22 extends towards the nozzle 211 and has a gap with it. The other end of the liquid inlet pipe 22 is connected to a liquid supply device, which can be a booster pump. The cooling medium is ejected from the end of the liquid inlet pipe 22 and initially mixed with the pressurized gas in the gap between the end of the liquid inlet pipe 22 and the nozzle 211 before being ejected from the nozzle 211, forming a mixed flow of atomized droplets and pressurized gas. Heat exchange is achieved through mechanisms such as enhanced heat transfer effect and phase change heat transfer effect, which can effectively reduce the probability of cylinder deformation compared with existing technologies.
[0016] Preferably, the end of the air intake chamber 21 facing the cooling medium flow channel 12 is a conical structure, and the nozzle 211 is located at the end with the smaller area of the two bottom surfaces of the conical structure to enhance the mixing effect.
[0017] Preferably, the liquid-gas mixing connector 20 is threadedly connected to the cooling medium inlet 121, which is easy to install and disassemble; the liquid-gas mixing connector 20 is also provided with a limiting plate 23. After the liquid-gas mixing connector 20 is tightened to the cooling medium inlet 121, the limiting plate 23 is tightly attached to the surface of the connecting flange 13, which plays a limiting role.
[0018] Preferably, the cooling medium outlet 122 is provided with a discharge pipe to recover the cooling medium.
[0019] The above describes one or more embodiments of this utility model in a relatively specific and detailed manner, but it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An extruder with a cooling device, comprising a barrel, the barrel having an inner cavity and a cooling medium flow channel surrounding the inner cavity, the cooling medium flow channel having a cooling medium inlet and a cooling medium outlet, characterized in that, Both ends of the cylinder are provided with connecting flanges. The cooling medium inlet and cooling medium outlet are respectively located in the two connecting flanges. The cooling medium inlet is provided with a liquid-gas mixing joint. The liquid-gas mixing joint is provided with an air inlet chamber. A liquid inlet pipe is provided in the center of the air inlet chamber. A nozzle is provided at one end of the air inlet chamber facing the cooling medium flow channel. An air inlet is also provided at the other end of the air inlet chamber. The air inlet is connected to an air supply device. One end of the liquid inlet pipe extends towards the nozzle and a gap is provided between the liquid inlet pipe and the nozzle. The other end of the liquid inlet pipe is connected to a liquid supply device.
2. An extruder with a cooling device according to claim 1, characterized in that, The air intake chamber has a conical structure at the end facing the cooling medium flow channel, and the nozzle is located at the end with the smaller area of the two bottom surfaces of the conical structure.
3. An extruder with a cooling device according to claim 1, characterized in that, The liquid-gas mixing joint is threadedly connected to the cooling medium inlet.
4. An extruder with a cooling device according to claim 1, characterized in that, The liquid-gas mixing joint is also equipped with a limit plate.
5. An extruder with a cooling device according to claim 1, characterized in that, The cooling medium outlet is equipped with a discharge pipe.