CN219232346U - Differential polyester production device - Google Patents
Differential polyester production device Download PDFInfo
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- CN219232346U CN219232346U CN202223202757.8U CN202223202757U CN219232346U CN 219232346 U CN219232346 U CN 219232346U CN 202223202757 U CN202223202757 U CN 202223202757U CN 219232346 U CN219232346 U CN 219232346U
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Abstract
The utility model belongs to the technical field of polyester production, and particularly relates to a differential polyester production device, which comprises a mixing weighing bin, wherein the mixing weighing bin is connected with a forced feeding screw device through a horizontal feeding screw device, the forced feeding screw device is connected with a reaction kettle through a double screw extruder, and the double screw extruder is also connected with a liquid raw material pipeline, wherein the mixing weighing bin is used for receiving various solid raw materials and conveying the solid raw materials to the horizontal feeding screw device, the horizontal feeding screw device is used for conveying the solid raw materials to the forced feeding screw device and controlling the conveying speed, the forced feeding screw device is used for extruding the solid raw materials into the double screw extruder, the liquid raw material pipeline is used for conveying the liquid raw materials, and the double screw extruder is used for mixing the solid raw materials with the liquid raw materials after shearing and melting.
Description
Technical Field
The utility model belongs to the technical field of polyester production, and particularly relates to a differential polyester production device.
Background
Differentiation is an important development of polyester production facilities in which solid raw materials and liquid raw materials are thoroughly mixed before entering a reactor for multi-step reaction.
However, most of the polyester differential production devices at present adopt complicated three steps of pulping, esterifying and polycondensing, so that problems can occur: the production energy consumption is high, the steps are tedious, the time consumption is long, and especially when stirring and melting reaction is carried out on some solid raw materials with large shapes, the process is complex, and the melting time consumption is very long.
Disclosure of Invention
The utility model aims to provide a differentiated polyester production device, so that the device is convenient and efficient in polyester production, low in energy consumption and easy to control in production process.
The utility model provides a differential polyester production device, includes the mixed feed bin that weighs, the mixed feed bin is connected with the compulsory feed screw device through horizontal feed screw device, the compulsory feed screw device is connected with reation kettle through the twin-screw extruder, the twin-screw extruder still is connected with liquid raw materials pipeline, wherein, the mixed feed bin that weighs is used for receiving multiple solid raw materials and carries solid raw materials to horizontal feed screw device, horizontal feed screw device is used for carrying solid raw materials to compulsory feed screw device and control conveying speed, compulsory feed screw device is used for extruding into the solid raw materials the twin-screw extruder, liquid raw materials pipeline is used for carrying liquid raw materials, the twin-screw extruder is used for carrying out shearing melting back with liquid raw materials with solid raw materials and mixes.
Preferably, a stirrer is arranged in the mixing weighing bin, and a weighing metering device is arranged on the mixing weighing bin.
By adopting the technical scheme, the mixing weighing bin can add various differential solid raw materials, the weighing metering device is accurate in metering, the mixing weighing bin is matched with the weighing metering device to accurately add various solid raw materials, and the mixing weighing bin is provided with the stirrer, so that the materials are more uniformly mixed, and are melted after more than four hours in a general conventional production process, and the mixing weighing bin can be shortened to within one hour and can be continuously produced; in addition, the method has the advantages of fewer equipment and fewer steps, so that equipment cost and processing cost are lower.
Preferably, the double-screw extruder is connected with a reaction kettle through a jacket conveying pipeline.
Preferably, the liquid raw material pipeline is provided with a flowmeter, and the flowmeter is connected with a liquid flow regulating valve.
Preferably, the twin-screw extruder is further connected with a vacuum filter through a vacuum pipe, the vacuum filter being used for filtering gas and solids extracted from the twin-screw extruder.
Preferably, a vacuum buffer tank is connected to the vacuum filter, and the vacuum buffer tank is used for buffering the solid which is not filtered by the precipitation vacuum filter.
Preferably, the vacuum buffer tank is connected with a vacuum pump for pumping out noncondensable gases and powering the pumping out of the twin screw extruder.
Preferably, a vacuum pressure gauge is installed between the vacuum buffer tank and the vacuum pump, and the vacuum pressure gauge is used for monitoring vacuum data.
By adopting the technical scheme, the vacuum pressure gauge is used for monitoring vacuum degree data, so that operators can be helped to judge the blockage condition of the vacuum pipeline and the influence degree of the vacuum degree on products.
Preferably, a filter screen is arranged in the vacuum filter, and the filter screen is used for blocking most particles.
By adopting the technical scheme, the vacuum filter is used for filtering and blocking the gas pumped out by the double-screw extruder, the filter screen is arranged inside, most of particles can be blocked, and tail gas continuously enters the vacuum buffer tank, so that the device is convenient and efficient, and meanwhile, the quality of produced products is high.
Preferably, the twin-screw extruder is provided with an injection port connected with the liquid raw material pipeline, and the injection port is used for injecting liquid raw materials.
The beneficial effects of the utility model are as follows:
firstly, the application includes mixing weighing bin and weighing metering device, and mixing weighing bin cooperates weighing metering device and can accurately add multiple solid raw materials, and mixing weighing bin is provided with the agitator, makes the material mix more even; the melting is carried out for more than four hours in the general conventional production process, and all equipment is matched so that the production process time can be shortened to within one hour, and continuous production can be realized; in addition, the equipment is fewer, the steps are fewer, and the equipment cost and the processing cost are lower;
secondly, the vacuum pipeline, the vacuum filter, the vacuum buffer tank, the vacuum pressure gauge and the vacuum pump are matched to pump out and filter air, water vapor, impurities and other light component materials in the double-screw extruder, the vacuum pressure gauge monitors vacuum data in real time, and an operator judges the influence degree of the blockage condition of the vacuum pipeline and the vacuum degree on a product through the vacuum data, so that the quality of the product is higher, and the process is easy to control;
thirdly, the device comprises a liquid flow regulating valve, a flowmeter and a liquid raw material pipeline, wherein the liquid raw material enters a double-screw extruder to react with the solid raw material through the cooperation of the devices, so that the device is high in reaction efficiency, convenient to produce and easy to control in process;
above-mentioned, the device of this application makes polyester production convenient and high-efficient, and the power consumption is low, and production process easily controls in addition.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present utility model;
marked in the figure as: 1. mixing and weighing the stock bin; 2. a horizontal feed screw device; 3. a forced feed screw device; 4. a twin screw extruder; 5. a jacketed transfer tube; 6. a reaction kettle; 7. a vacuum pipe; 8. a vacuum filter; 9. a vacuum buffer tank; 10. a vacuum pressure gauge; 11. a vacuum pump; 12. a liquid raw material pipeline; 13. a flow meter; 14. a liquid flow conduit.
Detailed Description
Example 1
As shown in fig. 1, a differentiated polyester production apparatus includes a mixing weigh bin 1.
There is the agitator in the mixed feed bin 1, has weighing metering device on the mixed feed bin 1, and wherein, mixed feed bin 1 is used for receiving multiple solid raw materials, and the agitator is used for evenly mixing solid raw materials, and weighing metering device is used for accurate measurement and the different solid raw materials of ratio.
The outlet at the bottom of the mixing and weighing bin 1 is connected with a horizontal feeding screw device 2 through a first pipeline, the horizontal feeding screw device 2 is a single-screw or double-screw feeding device controlled by variable frequency, the variable frequency can be more accurately and automatically controlled by variable frequency, the horizontal feeding screw device 2 is connected with a forced feeding screw device 3 through a second pipeline, and the horizontal feeding screw device 2 is used for conveying solid raw materials conveyed into the horizontal feeding screw device 2 from the mixing and weighing bin 1 to the forced feeding screw device 3.
The forced feeding screw device 3 is internally provided with a single screw and is connected with a double screw extruder 4 through a pipeline III, and the forced feeding screw device 3 is used for vertically and downwards conveying solid raw materials in the device to the double screw extruder 4.
There is the filling port on the twin-screw extruder 4, there is valve one on the filling port, preferably the filling port quantity is two and be nozzle type filling port, the nozzle is towards twin-screw extruder 4, the filling port is connected with liquid raw materials pipeline 12, there is flowmeter 13 on the liquid raw materials pipeline 12, flowmeter 13 is connected with liquid flow control valve 14, wherein, nozzle type filling port is used for spouting liquid raw materials to twin-screw extruder 4 in high speed, prevent liquid raw materials rapid cooling solidification simultaneously, liquid raw materials pipeline 12 is used for carrying liquid raw materials to twin-screw extruder 4, twin-screw extruder 4 is used for carrying out shearing melting with solid raw materials after mixing with liquid raw materials.
The double-screw extruder 4 is also provided with a vacuum extraction opening, the vacuum extraction opening is provided with a valve II, the vacuum extraction opening is connected with a vacuum filter 8 through a vacuum pipeline 7, a filter is arranged in the vacuum filter 8, the filter is preferably a basket type filter, a filter screen is arranged in the basket type filter, the filter screen is preferably a metal filter screen with 80 meshes, the vacuum filter 8 is connected with a vacuum buffer tank 9 through a pipeline IV, the vacuum buffer tank 9 is connected with a vacuum pump 11 through a pipeline V, and the top of the vacuum pump 11 is preferably provided with an exhaust pipe; the vacuum filter 8 is used for filtering gas and impurities pumped by the double-screw extruder 4, the filter screen is used for blocking most particles, the vacuum buffer tank 9 is used for buffering and precipitating solids pumped by the vacuum filter 8, meanwhile, the vacuum pump 11 is prevented from being excessively high in pumping speed, the unstable air flow causes impact and damage to the whole device, the vacuum pump 11 is used for pumping non-condensable gas and providing power for pumping the double-screw extruder 4, and the exhaust pipe is used for exhausting the non-condensable gas or exhausting the non-condensable gas to an external air storage tank.
The vacuum pressure gauge 10 is arranged on the pipeline five, the vacuum pressure gauge 10 is used for monitoring vacuum data, and an operator judges the blocking condition of the vacuum pipeline 7 and the influence degree of the vacuum degree on products through the vacuum data.
The discharge gate of twin-screw extruder 4 is connected with reation kettle 6 through pressing from both sides cover pipeline 5, and reation kettle 6 is polyester reation kettle, and reation kettle 6 is used for the reaction synthesis of raw materials, specifically does: the raw materials after the reaction in the double-screw extruder 4 are conveyed to a reaction kettle 6 through a jacket conveying pipeline 5, and the raw materials continue to perform polyester reaction in the reaction kettle 6.
In addition, valves capable of controlling the speed are arranged on the first pipeline, the second pipeline and the third pipeline.
The application provides a differential polyester apparatus for producing, the course of operation is as follows: the mixed weighing bin 1 and the weighing metering device are started by an external motor, various differential solid raw materials are sequentially put into the mixed weighing bin 1, the weighing metering device displays the put-in amount of the solid raw materials in real time, and an operator can adjust and ratio the put-in amount of the solid raw materials in real time according to the requirements; the stirrer in the mixing and weighing bin 1 uniformly mixes a plurality of different solids, the mixed solid raw materials enter the horizontal feeding screw device 2 through the first pipeline, the horizontal feeding screw device 2 accurately controls the speed of the solid raw materials entering the forced feeding screw device 3 from the second pipeline through frequency conversion, the forced feeding screw device 3 vertically conveys the entered solid raw materials downwards into the double screw extruder 4 through the third pipeline, the double screw extruder 4 shears and melts the solid raw materials, then the liquid flow regulating valve 14, the flowmeter 13 and the valve I of the injection port are opened, the liquid raw materials are conveyed from the liquid raw material pipe to the injection port according to the requirements, the liquid raw materials are sprayed into the double screw extruder 4 from the nozzle of the injection port at high speed, the liquid raw materials react with the sheared and melted solid raw materials, the valve II of the vacuum extraction port is opened according to the requirements, starting a vacuum pump 11 and a vacuum pressure gauge 10 on a pipeline five, sucking air, water vapor, impurities and other light component materials in the double-screw extruder 4 into a vacuum pipeline 7 by the vacuum pump 11, then entering a vacuum filter 8, filtering most particles and impurities by a filter and a filter screen in the vacuum filter 8, continuously sucking unfiltered solids and gases into a vacuum buffer tank 9 from the pipeline four by the vacuum pump 11, buffering and precipitating the solids by the vacuum buffer tank 9, sucking residual non-condensable gases into the vacuum pump 11 from the pipeline five by the vacuum pump 11, then discharging the residual non-condensable gases from an exhaust pipe at the top or discharging the residual non-condensable gases to an external air storage tank, and in addition, monitoring vacuum data in real time by the vacuum pressure gauge 10 when the vacuum pump 11 works, and judging the blocking condition of the vacuum pipeline 7 and the influence degree of vacuum degree on products by operators through the vacuum data;
after the air, water vapor, impurities and other light component materials in the double-screw extruder 4 are pumped out and filtered, the quality of the raw material reaction product in the double-screw extruder 4 is improved, and after the reaction is finished, the product in the double-screw extruder 4 is conveyed to the reaction kettle 6 from the jacket conveying pipeline 5, and the product continuously completes the polyester reaction in the reaction kettle 6.
The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a differentiation polyester production device, its characterized in that, including mixing weighing feed bin (1), mixing weighing feed bin (1) is connected with forced feed screw device (3) through horizontal feed screw device (2), forced feed screw device (3) are connected with reation kettle (6) through twin-screw extruder (4), twin-screw extruder (4) still are connected with liquid raw materials pipeline (12), wherein, mixing weighing feed bin (1) are used for receiving multiple solid raw materials and carry solid raw materials to horizontal feed screw device (2), horizontal feed screw device (2) are used for carrying solid raw materials to forced feed screw device (3) and control the conveying speed, forced feed screw device (3) are used for extruding solid raw materials into twin-screw extruder (4), liquid raw materials pipeline (12) are used for carrying liquid raw materials, twin-screw extruder (4) are used for carrying out shearing melting back with liquid raw materials.
2. The differentiated polyester production device according to claim 1, wherein a stirrer is arranged in the mixing and weighing bin (1), and a weighing and metering device is arranged on the mixing and weighing bin (1).
3. The differentiated polyester production device according to claim 1, wherein the twin-screw extruder (4) is connected to a reaction kettle (6) through a jacket conveying pipe (5).
4. The differentiated polyester production device according to claim 1, wherein the liquid raw material pipeline (12) is provided with a flow meter (13), and the flow meter (13) is connected with a liquid flow regulating valve (14).
5. The differentiated polyester production device according to claim 1, wherein the twin-screw extruder (4) is further connected with a vacuum filter (8) through a vacuum pipe (7), the vacuum filter (8) being used for filtering gases and solids withdrawn from the twin-screw extruder (4).
6. The differentiated polyester production plant according to claim 5, wherein the vacuum filter (8) is connected to a vacuum buffer tank (9), the vacuum buffer tank (9) being used for buffering the solids not filtered by the precipitated vacuum filter (8).
7. The differentiated polyester production device according to claim 6, wherein the vacuum buffer tank (9) is connected with a vacuum pump (11), the vacuum pump (11) being used for pumping out noncondensable gases and powering the pumping out of the twin-screw extruder (4).
8. The differentiated polyester production device according to claim 7, wherein a vacuum pressure gauge (10) is installed between the vacuum buffer tank (9) and the vacuum pump (11), the vacuum pressure gauge (10) being used for monitoring vacuum data.
9. The differentiated polyester production device according to claim 5, wherein the vacuum filter (8) has a screen inside for blocking most of the particles.
10. The differentiated polyester production device according to any one of claims 1 to 9, wherein the twin-screw extruder (4) is provided with an injection port connected to the liquid raw material pipe (12) for injection of liquid raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223202757.8U CN219232346U (en) | 2022-11-30 | 2022-11-30 | Differential polyester production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223202757.8U CN219232346U (en) | 2022-11-30 | 2022-11-30 | Differential polyester production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219232346U true CN219232346U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223202757.8U Active CN219232346U (en) | 2022-11-30 | 2022-11-30 | Differential polyester production device |
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| Country | Link |
|---|---|
| CN (1) | CN219232346U (en) |
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- 2022-11-30 CN CN202223202757.8U patent/CN219232346U/en active Active
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