CN216182660U - Roller constant temperature device of plastic plate extruder - Google Patents
Roller constant temperature device of plastic plate extruder Download PDFInfo
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- CN216182660U CN216182660U CN202122671139.7U CN202122671139U CN216182660U CN 216182660 U CN216182660 U CN 216182660U CN 202122671139 U CN202122671139 U CN 202122671139U CN 216182660 U CN216182660 U CN 216182660U
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Abstract
The utility model relates to the field of plastic plate extrusion equipment, and discloses a roller constant temperature device of a plastic plate extruder, which comprises a constant temperature device, wherein the constant temperature device comprises a plurality of heating pipes, each heating pipe is provided with a heating element and a temperature sensor, a constant temperature cavity is arranged in a roller, the temperature of fluid in the constant temperature cavity can control the surface temperature of the roller, and the fluid in the heating pipes is respectively connected with the constant temperature cavity in the roller through pipelines; the heating element and the temperature sensor are connected with the control device, the heating tube comprises an oil heating tube and a water heating tube, the water heating tube can output water or water vapor to the constant-temperature containing cavity, the oil heating tube can output liquid oil to the constant-temperature containing cavity, and the corresponding heating tube is controlled to be communicated with the constant-temperature containing cavity according to the required temperature; the utility model selects different media to control the temperature at different temperatures, and has the function of discharging the moisture in the oil, so that the temperature and the pressure in the whole constant temperature system are kept at stable values, and the final forming effect is better.
Description
Technical Field
The utility model relates to the field of plastic plate extrusion equipment, in particular to a roller constant temperature device of a plastic plate extruder.
Background
The plastic sheet extruder is a main device for processing and forming materials, the extruder generally comprises an extrusion head for conveying liquid materials and a roller for extruding and forming the materials, the extrusion head loads the materials and conveys the materials to the position right above a roller wheel of a roller wheel assembly, the extrusion head outputs the materials to the position between the rollers, the rollers extrude the materials into films and convey the films to a die for extruding molten plastics, three rollers are required to be shaped, calendered and cooled, and the cooling temperatures required by the three rollers are different; in addition, in the prior art, the oil tank can contain partial steam, the oil is difficult to press into the required roller due to the existence of the steam, so that drainage work is often performed, the oil is required to be heated in drainage, the slow drainage of the steam takes several hours and is time-consuming, and therefore a constant temperature system with good temperature control effect, safety, stability and easiness in drainage is required to ensure the temperature of the roller.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a roller constant temperature device of a plastic plate extruder.
In order to solve the technical problem, the utility model is solved by the following technical scheme:
the roller constant temperature device of the plastic plate extruder comprises a constant temperature device, wherein the constant temperature device comprises a plurality of heating pipes, the heating pipes are provided with heating elements and temperature sensors, a constant temperature cavity is arranged in the roller, the temperature of fluid in the constant temperature cavity can control the surface temperature of the roller, and the fluid in the heating pipes is respectively connected with the constant temperature cavity in the roller through pipelines;
the heating device comprises a heating element and a temperature sensor, the heating element and the temperature sensor are connected with the control device, the heating tube comprises an oil heating tube and a water heating tube, the water heating tube can output water or water vapor to the constant-temperature containing cavity, the oil heating tube can output liquid oil to the constant-temperature containing cavity, and the corresponding heating tube is controlled to be communicated with the constant-temperature containing cavity according to the required temperature.
Preferably, at least two oil heating pipes are connected in series and then are communicated with the constant-temperature cavity in the roller through a pipeline. The oil circulation system adopts 2 or more than 2 groups of low-power heating pipes to replace 1 group of high-power heating pipes, the heating curve is more uniform, and high-pressure and low-pressure detection, oil shortage alarm and heating pipe protection functions are simultaneously arranged.
Preferably, the presence of water in the oil will cause the oil to lose pressure, the pressure at normal circulation, and the pressure of the water vapour, being greater than the oil pressure, will squeeze the heat transfer oil back to oil pressure,
preferably, a pressure sensor and a water level sensor are arranged in the heating pipe, and the pressure sensor and the water level sensor are both connected with the control device.
Preferably, the oil heating pipe is connected with an exhaust passage, the exhaust passage is provided with an exhaust port, and the oil heating pipe is connected with an oil tank.
Preferably, the oil heating pipe is further provided with a booster pump for pressurizing oil in the oil heating pipe. If contain moisture in the conduction oil, then after reaching the uniform temperature, moisture in the conduction oil can become vapor and increase system internal pressure and extrude the oil tank with the conduction oil in the system in, lead to the system to go into oil can not supply by oneself, the inside unable pressurize of lack of oil again of system leads to the temperature and the pressure instability in the oil heating pipe, consequently through having set up at the oil inlet and having inhaled two kinds of modes of formula and pressurization formula, consequently set up into oily pressurization system, force to release expansion pipe department with vapor and discharge.
Preferably, the oil tank is used for storing oil, and the oil in the oil tank is connected with the oil heating pipe through a pipeline.
Due to the adoption of the technical scheme, the utility model has the remarkable technical effects that:
according to the utility model, through the arrangement of the temperature sensor, the controller, the pump, the pipeline and the heating pipe, the roller of the extruder can be in a constant temperature state, the phenomenon that the temperature of the roller is continuously raised along with the temperature of the material to cause instability of products during production is avoided, normal processing is not influenced in the cooling process, the use effect is good, and the temperature condition of the roller can be constantly monitored, so that the effect of the extruded plastic plate is better; different media are selected at different temperatures to control the temperature, and the oil-water separator has the function of discharging water in oil, so that the temperature and the pressure in the whole constant temperature system are kept at stable values, and the final forming effect is better.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of another aspect of the present invention
The names of the parts indicated by the numerical references in the above figures are as follows: wherein, 11-oil heating pipe, 12-water heating pipe, 13-oil tank, 14-booster pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
A roller constant temperature device of a plastic plate extruder is shown in figures 1-2 and comprises a constant temperature device, wherein the constant temperature device comprises a plurality of heating pipes, each heating pipe is provided with a heating element and a temperature sensor, a constant temperature cavity is arranged in a roller, the temperature of fluid in the constant temperature cavity can control the surface temperature of the roller, and the fluid in the heating pipes is respectively connected with the constant temperature cavity in the roller through pipelines;
the heating device comprises a heating element and a temperature sensor, the heating element and the temperature sensor are connected with the control device, the heating tube comprises an oil heating tube 11 and a water heating tube 12, the water heating tube 12 can output water or water vapor to a constant temperature containing cavity, the oil heating tube 11 can output liquid oil to the constant temperature containing cavity, and the corresponding heating tube is controlled to be communicated with the constant temperature containing cavity according to the required temperature. When the plastic plate extruder extrudes molten plastic through a die, the molten plastic needs to be shaped, calendered and cooled by three rollers, each roller of the three rollers is hollow and provided with a jacket, an external thermostat is needed for heating and cooling so as to achieve the purpose of constant temperature, and the thermostat is provided with three modes of water, steam and oil for controlling the temperature according to the requirements of different plates. For low temperature control below 100 deg., the water temperature system is optimal and the heat exchange is fastest. The temperature of 100-150 degrees can be controlled by steam or oil, the temperature control of the steam is cleaner than that of the oil, no pollution is caused, but the pressure of a steam system is high, and the potential safety hazard is large in case of leakage. The temperature control is carried out by selecting heat conducting oil above 150 degrees, and the temperature control is stable.
The oil heating device is characterized by further comprising an oil tank 13 for storing oil, the oil in the oil tank 13 is connected with the oil heating pipes 11 through pipelines, at least two oil heating pipes 11 are connected in series and are communicated with a constant-temperature cavity in the roller through pipelines, the oil temperature is higher than the water temperature and is difficult to reach the required temperature, the heating temperature can be increased in a stepped mode through a multi-time heating mode, the temperature rising time is prolonged, and the required temperature is reached more easily.
A pressure sensor and a water level sensor are arranged in the heating pipe, and the pressure sensor and the water level sensor are connected with a control device. Meanwhile, high-pressure and low-pressure detection, water shortage alarm and heating pipe protection functions are arranged, so that the constant temperature system is safer and more reliable.
The oil heating pipe 11 is further provided with a booster pump 14, and the booster pump 14 is used for pressurizing oil in the oil heating pipe 11. The oil heating pipe 11 is connected with an exhaust passage, the exhaust passage is provided with an exhaust port, and the oil heating pipe 11 is connected with an oil tank. If moisture exists in the heat conduction oil, the moisture is gasified when the heat conduction oil is heated, so that the pressure and the temperature of the system are unstable, the temperature control effect is influenced, meanwhile, the heat conduction oil can form oil residue precipitation pipelines to cause blockage, the moisture in the oil heating pipe 11 can be converted into steam after the temperature is raised, and the steam can be smoothly discharged from the exhaust port by the booster pump.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (6)
1. The roller constant temperature device of the plastic plate extruder comprises a constant temperature device, wherein the constant temperature device comprises a plurality of heating pipes, the heating pipes are provided with heating elements and temperature sensors, a constant temperature cavity is arranged in the roller, the temperature of fluid in the constant temperature cavity can control the surface temperature of the roller, and the fluid in the heating pipes is respectively connected with the constant temperature cavity in the roller through pipelines; the method is characterized in that: the heating device comprises a heating element and a temperature sensor, the heating element and the temperature sensor are connected with the control device, the heating tube comprises an oil heating tube and a water heating tube, the water heating tube can output water or water vapor to the constant-temperature containing cavity, the oil heating tube can output liquid oil to the constant-temperature containing cavity, and the corresponding heating tube is controlled to be communicated with the constant-temperature containing cavity according to the required temperature.
2. The roller thermostat device of a plastic sheet extruder according to claim 1, characterized in that: at least two oil heating pipes are connected in series and then are communicated with the constant temperature cavity in the roller through a pipeline.
3. The roller thermostat device of a plastic sheet extruder according to claim 1, characterized in that: the heating pipe is provided with a pressure sensor and a water level sensor, and the pressure sensor and the water level sensor are both connected with the control device.
4. The roller thermostat device of a plastic sheet extruder according to claim 1, characterized in that: the oil heating pipe is connected with the exhaust passage, the exhaust passage is provided with an exhaust port, and the oil heating pipe is connected with the oil tank.
5. The roller thermostat device of a plastic sheet extruder according to claim 1, characterized in that: the oil heating pipe is also provided with a booster pump, and the booster pump is used for pressurizing oil in the oil heating pipe.
6. The roller thermostat device of a plastic sheet extruder according to claim 1, characterized in that: the oil tank is used for storing oil, and the oil in the oil tank is connected with the oil heating pipe through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122671139.7U CN216182660U (en) | 2021-11-03 | 2021-11-03 | Roller constant temperature device of plastic plate extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122671139.7U CN216182660U (en) | 2021-11-03 | 2021-11-03 | Roller constant temperature device of plastic plate extruder |
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| Publication Number | Publication Date |
|---|---|
| CN216182660U true CN216182660U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122671139.7U Active CN216182660U (en) | 2021-11-03 | 2021-11-03 | Roller constant temperature device of plastic plate extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216182660U (en) |
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2021
- 2021-11-03 CN CN202122671139.7U patent/CN216182660U/en active Active
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