Polyester pulp mixing system

Abstract

The utility model discloses a polyester pulp mixing system. Comprising a main control circuit, a recycling and collecting container, a first filter pipe network, a second filter pipe network, a bypass pipeline, an output pipeline, a first basket filter, a second basket filter, a first feeding pump, a second feeding pump, a first valve, a second valve, a bypass valve, a first precision filter, a second precision filter, a third valve and a fourth valve, and a first flow sensor and a slurry preparation container. The polyester slurry preparation system provided by the utility model can reduce deposition of impurities and particulate matters, and can reduce blockage and abrasion of internal pipelines of equipment, so that the service life of the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyester production technical field relates to a slurry preparation system especially relates to a polyester slurry preparation system. BACKGROUND

[0002] The existing polyester slurry preparation system reuses ethylene glycol from each system of the device circulating replacement, and the ethylene glycol has three parts, the first part is from the esterification process column online recovery treatment ethylene glycol, the second part is from the polycondensation section generation and spray system replacement ethylene glycol, and the third part is from the vacuum injection system.The ethylene glycol from the three parts is uniformly collected in the slurry preparation system ethylene glycol collecting tank, and the impurities contained in the ethylene glycol of each system are different, and the purity of the ethylene glycol is different.The ethylene glycol is mixed together in the reuse ethylene glycol collecting tank, and then is transported to the slurry preparation tank by the feed pump for slurry preparation operation, and the existing mode cannot effectively filter various impurities in the reused ethylene glycol.

[0003] The slurry preparation system ethylene glycol originally designed feed mode unifies all the ethylene glycol of each system to the slurry preparation reused ethylene glycol collecting tank, and the outlet of the reused ethylene glycol collecting tank has a group of basket filters, and then is transported to the slurry preparation tank by the feed pump for slurry preparation.

[0004] Therefore, there is an urgent need to design a new slurry preparation system to overcome at least some of the above-mentioned defects of the existing slurry preparation system. INVENTION CONTENTS

[0005] The utility model provides a kind of polyester slurry preparation system, can reduce the deposition of impurities and particulate matter, can reduce the blockage and wear of equipment internal pipeline, thereby prolong the service life of equipment.

[0006] To solve the above technical problems, according to one aspect of the utility model, the following technical scheme is adopted:

[0007] A polyester slurry preparation system, the polyester slurry preparation system includes: a main control circuit, a reuse collection container, a first filter pipe network, a second filter pipe network, a bypass pipeline, an output pipeline, a first basket filter, a second basket filter, a first feed pump, a second feed pump, a first valve, a second valve, a bypass valve, a first precision filter, a second precision filter, a third valve, a fourth valve, a first flow sensor and a slurry preparation container;

[0008] The first end of the first filter pipe network is connected to the reuse collection container, and the second end of the first filter pipe network is connected to the first end of the second filter pipe network and the first end of the bypass pipeline;The second end of the second filter pipe network and the second end of the bypass pipeline are respectively connected to the first end of the output pipeline, and the second end of the output pipeline is connected to the slurry preparation container;

[0009] The bypass pipeline is provided with the bypass valve; the output pipeline or / and the first filtering pipeline or / and the second filtering pipeline or / and the bypass pipeline is provided with the first flow sensor;

[0010] The first filtering pipeline comprises a first pipeline and a second pipeline; the first pipeline is provided with the first basket filter, the first feed pump and the first valve; the second pipeline is provided with the second basket filter, the second feed pump and the second valve;

[0011] The second filtering pipeline comprises a third pipeline and a fourth pipeline; the third pipeline is provided with the first precision filter and the third valve; the fourth pipeline is provided with the second precision filter and the fourth valve;

[0012] The main control circuit is connected with the first feed pump, the second feed pump, the first valve, the second valve, the bypass valve, the third valve, the fourth valve and the first flow sensor respectively.

[0013] As an embodiment of the utility model, the polyester slurry preparation system further comprises a second flow sensor, a third flow sensor, a fourth flow sensor and a fifth flow sensor;

[0014] The first flow sensor, the second flow sensor, the third flow sensor, the fourth flow sensor and the fifth flow sensor are arranged on the first pipeline, the second pipeline, the third pipeline, the fourth pipeline and the output pipeline respectively;

[0015] The output end of the first flow sensor, the second flow sensor, the third flow sensor, the fourth flow sensor and the fifth flow sensor is connected with the input end of the main control circuit respectively.

[0016] As an embodiment of the utility model, the reuse collection container is a container for recycling ethylene glycol EG, and the polyester slurry preparation system further comprises a PTA conveying mechanism;

[0017] The PTA conveying mechanism is provided with a material storage container, a second control circuit, a vibration motor, a weight sensor and an electric valve;

[0018] The material storage container is used for storing PTA materials, and the bottom of the material storage container is provided with a material dropping port; the material dropping port can be arranged above the slurry preparation container;

[0019] The material storage container is connected with the vibration motor, and the vibration motor can vibrate the material storage container; the material dropping port is provided with an electric valve, and in the opened state of the electric valve, the PTA materials in the material dropping area can drop into the slurry preparation container through the material dropping port;

[0020] The weight sensor is used to sense the weight of the material storage container, and an output end of the weight sensor is connected to an input end of the second control circuit, so that the obtained weight data can be sent to the second control circuit.

[0021] An output end of the second control circuit is connected to an input end of the vibration motor, so that a control signal can be sent to the vibration motor.

[0022] As an embodiment of the utility model, the main control circuit is connected to the second control circuit, and can send and receive information to each other.

[0023] As an embodiment of the utility model, the blanking port is provided with a filter screen.

[0024] As an embodiment of the utility model, the third pipeline is further provided with a fifth valve, and the third valve and the fifth valve are arranged on the two sides of the first precision filter; wherein the third valve is arranged close to the first end of the second filter pipe network, and the fifth valve is arranged close to the second end of the second filter pipe network.

[0025] The second filter pipe network further comprises a fifth pipeline provided with a sixth valve; the first end of the fifth pipeline is arranged between the first precision filter and the fifth valve, and the second end of the fifth pipeline is connected to the fourth pipeline, so that the third pipeline and the fourth pipeline are connected in parallel in the state that the sixth valve is closed and the fifth valve is opened, and the third pipeline and the fourth pipeline are connected in series in the state that the sixth valve is opened and the fifth valve is closed.

[0026] As an embodiment of the utility model, the fifth valve and the sixth valve are solenoid valves or electric valves.

[0027] As an embodiment of the utility model, the first pipeline is provided with a first pressure sensor, the second pipeline is provided with a second pressure sensor, the third pipeline is provided with a third pressure sensor, and the fourth pipeline is provided with a fourth pressure sensor.

[0028] The first pressure sensor is used to sense the feeding pressure data formed by the movement of the first feeding pump, the second pressure sensor is used to sense the feeding pressure data formed by the movement of the second feeding pump, the third pressure sensor is used to sense the conveying pressure data formed after being filtered by the first precision filter, and the fourth pressure sensor is used to sense the conveying pressure data formed after being filtered by the second precision filter.

[0029] The first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are connected to the main control circuit, so that the sensed pressure data can be sent to the main control circuit.

[0030] As an embodiment of the utility model, the polyester slurry preparation system further comprises a display module, the output end of the main control circuit is connected to the input end of the display module, and the display module can be sent control signals.

[0031] As an embodiment of the utility model, the first valve, the second valve, the bypass valve, the third valve and the fourth valve are solenoid valves or electric valves.

[0032] As an embodiment of the utility model, the output pipeline is provided with a control valve.

[0033] The slurry preparation system reuses ethylene glycol to increase the precision filtering device, the filtering effect of the precision filter can be observed through the flow display value of the slurry preparation system reused ethylene glycol and the valve position display value of the flow control valve; a pressure gauge is arranged at the outlet of the reused ethylene glycol feed pump, and a pressure gauge is arranged at the outlet of the precision filtering device, the operation condition of the precision filtering device is determined by the pressure difference change of the two pressure gauges to determine whether the precision filtering device needs to be disassembled and washed, and the time reference for formulating regular maintenance is provided.

[0034] A set of precision filtering devices are arranged at the outlet of the reused ethylene glycol feed pump, two filter cartridges are arranged, one set of inlet and outlet valves is arranged on one filter cartridge, the precision filtering devices are used in parallel or in series according to the impurities filtered by the reused ethylene glycol, a bypass valve is arranged between the precision filtering device and the reused ethylene glycol feed pump, when the precision filtering devices are used in parallel, the filter cartridge needs to be disassembled and washed, the bypass valve can be opened, and the inlet and outlet valves of the precision filtering device are closed to disassemble and wash the precision filtering device, and the amount of slurry ethylene glycol is not affected.

[0035] The polyester slurry preparation system provided by the utility model can reduce the deposition of impurities and particulate matters, reduce the blockage and wear of the internal pipeline of the equipment, and prolong the service life of the equipment.

[0036] The slurry preparation system reuses ethylene glycol to purify and improve the purity, reduce the content of impurities, oligomers and the like in the reused ethylene glycol, improve the purity of the ethylene glycol of the slurry preparation system, and finally improve the product quality; due to the original design of the ethylene glycol feeding mode of the slurry preparation system, the ethylene glycol is collected from the outlet of the ethylene glycol collecting tank, passes through a first basket filter, is then transported to the slurry preparation system by the slurry ethylene glycol feeding pump, and is used for slurry preparation; since the reused ethylene glycol contains oligomers, unreacted PTA particulate matters and scale paste, the original design only arranges a set of basket filters before the slurry feeding pump, and the filter screen of the filter is 40 meshes, the filter screen aperture is large, the filtering effect is poor, most of the impurities enter the slurry preparation system to prepare slurry for polymerization reaction, the reused slurry ethylene glycol is repeatedly used, the content of each impurity gradually increases, and finally the product color value and downstream spinning are affected.

[0037] In the slurry preparation system, a set of precision filter devices are additionally arranged in the outlet pipeline of the recycled ethylene glycol supply pump after the first basket filter at the outlet of the ethylene glycol collecting tank, compared with the original design, the precision filter devices can filter various impurities in the recycled ethylene glycol, improve the purity of the recycled ethylene glycol, and effectively remove small particles, impurities and pollutants in the recycled ethylene glycol, so that the stability and efficiency of the slurry preparation system are significantly improved. By reducing the entry of impurities and pollutants, the precision filter devices can ensure the cleanliness and purity of the slurry preparation system, avoid blockage and failure, and further improve the product quality and yield.

[0038] In one use scenario of the utility model, a set of precision filters are installed at the outlet of the recycled ethylene glycol supply pump, two filter coppers are installed, one set of inlet and outlet valves is installed on one filter copper, whether the precision filters are used in parallel or in series can be determined according to the filtered impurities of the recycled ethylene glycol, and a bypass valve is arranged between the precision filter and the recycled ethylene glycol supply pump; when the precision filters are used in parallel, the filter core is dirty and needs to be disassembled and washed, the bypass valve can be opened, the inlet and outlet valves of the precision filter are closed, and the recycled ethylene glycol is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a structural schematic view of the polyester slurry preparation system in one embodiment of the utility model.

[0040] Figure 2 It is a structural schematic view of the polyester slurry preparation system in one embodiment of the utility model.

[0041] Figure 3 It is a structural schematic view of the polyester slurry preparation system in one embodiment of the utility model.

[0042] Figure 4 It is a structural schematic view of the polyester slurry preparation system in one embodiment of the utility model. DETAILED DESCRIPTION

[0043] The preferred embodiments of the utility model are described in detail below with reference to the drawings.

[0044] In order to further understand the utility model, the preferred embodiments of the utility model are described below in combination with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, and are not limitations on the claims of the utility model.

[0045] The description of this part is only for several typical embodiments, and the utility model is not limited to the range described in the embodiments. The same or similar prior art means and some technical features in the embodiments are replaced with each other, which is also within the description and protection range of the utility model.

[0046] The term "connected" in the specification includes both direct and indirect connections.

[0047] The utility model discloses a kind of polyester slurry preparation systems, Figure 1 It is the structural schematic diagram of polyester slurry preparation system in one embodiment of the utility model, Figure 2 It is the component schematic diagram of polyester slurry preparation system control part in one embodiment of the utility model;Please refer to Figure 1 、 Figure 2 The polyester slurry preparation system includes: main control circuit 19, reuse collection container 1, first filter pipe network 2, second filter pipe network 3, bypass pipeline 4, output pipeline 5, first basket filter 6, second basket filter 7, first feed pump 8, second feed pump 9, first valve 10, second valve 11, bypass valve 12, first precision filter 13, second precision filter 14, third valve 15, fourth valve 16, first flow sensor 17 and slurry preparation container 18.

[0048] The first end of the first filter pipe network 2 is connected to the reuse collection container 1, and the second end of the first filter pipe network 2 is connected to the first end of the second filter pipe network 3 and the first end of the bypass pipeline 4; the second end of the second filter pipe network 3 and the second end of the bypass pipeline 4 are respectively connected to the first end of the output pipeline 5, and the second end of the output pipeline 5 is connected to the slurry preparation container 18; the output pipeline 5 can be provided with a control valve 35 (which can be a manual valve, or a solenoid valve, an electric valve). The bypass pipeline 4 is provided with the bypass valve 12; the output pipeline 5 or / and the first filter pipe network 2 or / and the second filter pipe network 3 or / and the bypass pipeline 4 is provided with the first flow sensor 17.

[0049] The first filter pipe network 2 includes a first pipeline 201 and a second pipeline 202; the first pipeline 201 is provided with the first basket filter 6, the first feed pump 8 and the first valve 10; the second pipeline 202 is provided with the second basket filter 7, the second feed pump 9 and the second valve 11. The second filter pipe network 3 includes a third pipeline 301 and a fourth pipeline 302; the third pipeline 301 is arranged at the first precision filter 13 and the third valve 15, and the fourth pipeline 302 is arranged at the second precision filter 14 and the fourth valve 16. The first basket filter 6 and the second basket filter 7 can be used simultaneously or one can be used as a backup; the first precision filter 13 and the second precision filter 14 can be used simultaneously or one can be used as a backup.

[0050] The main control circuit 19 is connected to the first feed pump 8, the second feed pump 9, the first valve 10, the second valve 11, the bypass valve 12, the third valve 13, the fourth valve 14 and the first flow sensor 17 respectively.

[0051] In an embodiment of the utility model, the polyester slurry preparation system further comprises a second flow sensor 20, a third flow sensor 21, a fourth flow sensor 22 and a fifth flow sensor 23. The first flow sensor 17, the second flow sensor 20, the third flow sensor 21, the fourth flow sensor 22 and the fifth flow sensor 23 are respectively arranged on the output pipeline 5, the first pipeline 201, the second pipeline 202, the third pipeline 301 and the fourth pipeline 302. The output ends of the first flow sensor 17, the second flow sensor 20, the third flow sensor 21, the fourth flow sensor 22 and the fifth flow sensor 23 are respectively connected to the input end of the main control circuit 19. The arrangement of the flow sensor can facilitate the acquisition of the filtering effect and the understanding of whether there is a blocked area.

[0052] The third pipeline 301 is further provided with a fifth valve 24, and the third valve 15 and the fifth valve 24 are respectively arranged on the two sides of the first precision filter 13. The third valve 15 is arranged close to the first end of the second filter pipe network 3, and the fifth valve 24 is arranged close to the second end of the second filter pipe network 3.

[0053] The fourth pipeline 302 can be provided with a seventh valve 32, and the fourth valve 16 and the seventh valve 32 are respectively arranged on the two sides of the second precision filter 14. The fourth valve 16 is arranged close to the first end of the second filter pipe network 3, and the seventh valve 32 is arranged close to the second end of the second filter pipe network 3.

[0054] Figure 3 It is a structural schematic diagram of the polyester slurry preparation system in an embodiment of the utility model. Please refer to Figure 3 In an embodiment of the utility model, the second filter pipe network 3 further comprises a fifth pipeline 303, and the fifth pipeline 303 is provided with a sixth valve 25. The first end of the fifth pipeline 303 is arranged between the first precision filter 13 and the fifth valve 24, and the second end of the fifth pipeline 303 is connected to the fourth pipeline 302, so that the third pipeline 301 and the fourth pipeline 302 are connected in parallel in the state that the sixth valve 25 is closed and the fifth valve 24 is opened, and the third pipeline 301 and the fourth pipeline 302 are connected in series in the state that the sixth valve 25 is opened and the fifth valve 24 is closed. Through the above mode, the precision filtering part can be selected in parallel or in series according to the requirement, and the working efficiency or the filtering precision can be improved.

[0055] The first pipeline 201 can be provided with an eighth valve 33, and the second pipeline 202 can be provided with a ninth valve 34. The first valve 10, the second valve 11, the bypass valve 12, the third valve 13, the fourth valve 14, the fifth valve 24, the sixth valve 25, the seventh valve 32, the eighth valve 33 and the ninth valve 34 can be solenoid valves or electric valves.

[0056] In addition, the first pipeline 201 can be provided with a first pressure sensor 26, the second pipeline 202 can be provided with a second pressure sensor 27, the third pipeline 301 can be provided with a third pressure sensor 28, and the fourth pipeline 302 can be provided with a fourth pressure sensor 29; the first pressure sensor 26 is used to sense the feed pressure data formed by the movement of the first feed pump, the second pressure sensor 27 is used to sense the feed pressure data formed by the movement of the second feed pump, the third pressure sensor 28 is used to sense the conveying pressure data formed after being filtered through the first precision filter, and the fourth pressure sensor 29 is used to sense the conveying pressure data formed after being filtered through the second precision filter. The first pressure sensor 26, the second pressure sensor 27, the third pressure sensor 28 and the fourth pressure sensor 29 are connected to the main control circuit, and can send the sensed pressure data to the main control circuit 19. The pressure sensor can be used to obtain the change of the feed pressure and the pressure after filtering, so as to facilitate understanding of the system operation, and to judge whether the filtering device needs to be disassembled and washed. In an embodiment, a pressure gauge is arranged at the outlet of the recycled ethylene glycol feed pump, and a pressure gauge is arranged at the outlet of the precision filtering device. Whether the precision filtering device needs to be disassembled and washed is determined by the pressure difference change of the two pressure gauges, and a time reference is provided for formulating regular maintenance.

[0057] Figure 4 It is an embodiment of the polyester slurry preparation system. Figure 4 In an embodiment of the utility model, the recycled collection container 1 is a container for recycling ethylene glycol EG, and the polyester slurry preparation system further comprises a PTA conveying mechanism 30.

[0058] The material storage container 3001 is used to store PTA materials, and the bottom of the material storage container 3001 is provided with a material falling port 3006; the material falling port 3006 can be arranged above the slurry preparation container 18. The material storage container 3001 is connected to the vibration motor 3003, and the vibration motor 3003 can bring the material storage container 3001 to vibrate; the material falling port 3006 is provided with an electric valve 3005, and under the opened state of the electric valve 3005, the PTA materials in the material falling area can fall into the slurry preparation container 18 through the material falling port 3006; the material falling port 3006 can be provided with a filter screen.

[0059] The weight sensor 3004 is used to sense the weight of the material storage container 3001, the output end of the weight sensor 3004 is connected to the input end of the second control circuit 3002, and the obtained weight data can be sent to the second control circuit 3002. The output end of the second control circuit 3002 is connected to the input end of the vibration motor 3003, and the control signal can be sent to the vibration motor 3003. The master control circuit 19 is connected to the second control circuit 3002, and can send and receive information with each other.

[0060] The polyester batching system further comprises a display module 31, and the output end of the master control circuit 19 is connected to the input end of the display module 31, and the display module 31 can be sent to the control signal to realize the setting content.

[0061] In one of the use scenarios of the utility model, Figure 1 As shown in the figure, the recycled ethylene glycol collecting tank is filtered through the basket filter and then transported to the batching tank by the batching feed pump to mix ethylene glycol and PTA in a certain proportion. The recycled ethylene glycol in this system contains a large amount of impurities and fine particle-shaped oligomers. These impurities cannot be effectively filtered out, and the system is repeatedly used during batching, which has a great influence on the quality of industrial yarn grade products.

[0062] After being filtered by the basket filter, the recycled ethylene glycol collecting tank is transported by the feed pump and then filtered by the precision filtering device. The impurities and fine particle-shaped oligomers in the recycled ethylene glycol are filtered, and then sent to the batching tank for mixing EG and PTA in a certain proportion. This method effectively filters the impurities in the recycled ethylene glycol after adding the precision filtering device, which is beneficial to the stable quality of industrial yarn grade products.

[0063] The polyester device batching system uses ethylene glycol entirely as recycled ethylene glycol, which comes from three parts of ethylene glycol circulating displacement from each system on the device; the first part is from the esterification process column online recovery treatment ethylene glycol, the second part is from the oligomerization section generation and spray system displacement ethylene glycol, and the third part is from the vacuum injection system. The ethylene glycol from the three parts is uniformly collected in the batching system ethylene glycol collecting tank. The impurities contained in the ethylene glycol of each system are different, and the purity of the ethylene glycol is not the same. The recycled ethylene glycol is mixed together in the recycled ethylene glycol collecting tank, and then transported to the batching tank by the feed pump for batching operation. It cannot effectively filter various impurities in the recycled ethylene glycol.

[0064] The glycol of the slurry preparation system is originally designed to be supplied in a mode of unifying all the glycols of each system to a glycol collection tank for slurry preparation, the glycol collection tank is provided with a group of basket filters at the outlet, and then is conveyed to a slurry preparation tank through a feeding pump for slurry preparation; since the original design is provided with a group of ordinary basket filters at the outlet of the glycol collection tank for slurry preparation, the filtering area is small, and is installed at the inlet of the feeding pump, so that the filter screen is only suitable for using a 40-60 mesh filter screen, the filter screen is too dense to be easily blocked, causing insufficient flow at the inlet of the feeding pump and pump cavitation, resulting in the flow fluctuation of the glycol for slurry preparation, and affecting the molar ratio of slurry preparation; the original design method has poor filtering effect on the impurities and small oligomers in the glycol for slurry preparation, and has great influence on the quality of the industrial filament grade chip product.

[0065] A group of precision filtering devices are added to the outlet pipeline of the glycol feeding pump for slurry preparation, the two filtering coppers of the group of precision filtering devices are used alternately, the filter core aperture of the filtering device is 100 mesh, and the filter core is a corrosion core type; a pressure gauge is installed at the outlet of the precision filtering device, which can be used to refer to the operation condition of the precision filter; the glycol feeding pump for slurry preparation is provided with a group of precision filtering devices, two filtering coppers, a set of inlet and outlet valves are installed on one filtering copper, the precision filtering devices are used in parallel or in series according to the filtering impurities of the glycol for slurry preparation, and a bypass valve is added between the precision filtering device and the glycol feeding pump for slurry preparation; when the filter core is dirty and needs to be disassembled and washed, the bypass valve is opened, the inlet and outlet valves of the precision filtering device are closed, and the disassembly and washing are carried out, so that the glycol consumption for slurry preparation is not affected.

[0066] In summary, the polyester slurry preparation system can reduce the deposition of impurities and particulate matter, reduce the blockage and wear of the internal pipeline of the equipment, and prolong the service life of the equipment.

[0067] In one use scenario of the utility model, after the tracking comparison, the average particle size of the suspended particles in the glycol for slurry preparation is reduced from 230 to 160 um after the precision filtering device is added, the effect of the precision filter is obvious, and various oligomers, pollutants, impurities and the like can also be filtered clean.

[0068] The utility model can improve product quality: by removing impurities in the glycol, the precision filtering device can significantly reduce the impurity content in the product, thereby improving the product quality, which is beneficial to improving the spinning stability of the downstream customer industrial filament, and also helps to meet the demand of the industry for high-purity products and improve the market competitiveness of the product.

[0069] The utility model can reduce production fluctuation: the precision filtering device can effectively capture small particles and pollutants, and ensure the stable operation of the slurry preparation system. This can reduce fluctuations and abnormal conditions in the production process, improve production efficiency, and reduce production cost.

[0070] The utility model can prolong the service life of equipment: through reducing the deposition of impurities and particulate matters, the precise filtering device can reduce the blockage and abrasion of the internal pipeline of equipment, thereby prolonging the service life of equipment, and prolonging the operation cycle of the device, which not only reduces the maintenance and replacement cost of equipment, but also reduces the operation cost of enterprises.

[0071] The utility model has the environmental protection benefit: through recycling and reusing ethylene glycol, the precise filtering device can also reduce the emission of waste water and waste gas, and realize the environmental protection production.

[0072] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0073] The description and application of the utility model are illustrative, and the scope of the utility model is not limited in the above-described embodiments. The effects or advantages involved in the embodiments can be interfered by various factors, and can not be embodied in the embodiments. The description of the effects or advantages is not used to limit the embodiments. The variations and changes of the disclosed embodiments are possible, and the alternatives and equivalent components of the embodiments are known to those skilled in the art. It should be clear to those skilled in the art that the utility model can be realized in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential characteristics of the utility model. Other variations and changes of the disclosed embodiments can be made without departing from the scope and spirit of the utility model.

Claims

1. A polyester compounding system characterized by, The polyester batching system comprises a master control circuit, a reuse collection container, a first filter pipe network, a second filter pipe network, a bypass pipe, an output pipe, a first basket filter, a second basket filter, a first feed pump, a second feed pump, a first valve, a second valve, a bypass valve, a first precision filter, a second precision filter, a third valve, a fourth valve, a first flow sensor, and a batching container. A first end of the first filter pipe network is connected to the reuse collection container, and a second end of the first filter pipe network is connected to a first end of the second filter pipe network and a first end of the bypass pipe; a second end of the second filter pipe network and a second end of the bypass pipe are respectively connected to a first end of the output pipe, and a second end of the output pipe is connected to the batching container. The bypass pipe is provided with the bypass valve; the output pipe or / and the first filter pipe network or / and the second filter pipe network or / and the bypass pipe is provided with the first flow sensor. The first filter pipe network comprises a first pipe and a second pipe; the first pipe is provided with the first basket filter, the first feed pump, and the first valve; the second pipe is provided with the second basket filter, the second feed pump, and the second valve. The second filter pipe network comprises a third pipe and a fourth pipe; the third pipe is provided with the first precision filter and the third valve, and the fourth pipe is provided with the second precision filter and the fourth valve. The master control circuit is respectively connected to the first feed pump, the second feed pump, the first valve, the second valve, the bypass valve, the third valve, the fourth valve, and the first flow sensor.

2. The polyester batching system according to claim 1, wherein: The polyester batching system further comprises a second flow sensor, a third flow sensor, a fourth flow sensor, and a fifth flow sensor; The first flow sensor, the second flow sensor, the third flow sensor, the fourth flow sensor, and the fifth flow sensor are respectively arranged in the first pipe, the second pipe, the third pipe, the fourth pipe, and the output pipe; Output ends of the first flow sensor, the second flow sensor, the third flow sensor, the fourth flow sensor, and the fifth flow sensor are respectively connected to input ends of the master control circuit.

3. The polyester batching system according to claim 1, wherein: The reuse collection container is a container for recycling ethylene glycol (EG), and the polyester batching system further comprises a PTA conveying mechanism; The PTA conveying mechanism is provided with a material storage container, a second control circuit, a vibration motor, a weight sensor, and an electric valve; The material storage container is used for storing PTA material, and a bottom of the material storage container is provided with a material dropping port; the material dropping port can be arranged above the batching container; The material storage container is connected to the vibration motor, and the vibration motor can bring the material storage container to vibrate; the material dropping port is provided with the electric valve, and in an open state of the electric valve, PTA material in a material dropping area can drop into the batching container through the material dropping port. The weight sensor is used to sense the weight of the material storage container, and the output end of the weight sensor is connected to the input end of the second control circuit, and can send the acquired weight data to the second control circuit; The output end of the second control circuit is connected to the input end of the vibration motor and can send a control signal to the vibration motor.

4. The polyester slurry preparation system according to claim 3, characterized in that: The main control circuit is connected to the second control circuit and can send and receive information to and from the second control circuit.

5. The polyester slurry preparation system according to claim 3, characterized in that: The drop port is provided with a filter screen.

6. The polyester slurry preparation system according to claim 1, characterized in that: The third pipeline is further provided with a fifth valve, and the third valve and the fifth valve are respectively provided on both sides of the first precision filter; wherein the third valve is provided near the first end of the second filter pipe network, and the fifth valve is provided near the second end of the second filter pipe network; The second filter pipe network further includes a fifth pipeline, which is provided with a sixth valve; the first end of the fifth pipeline is arranged between the first precision filter and the fifth valve, and the second end of the fifth pipeline is connected to the fourth pipeline, so that when the sixth valve is closed and the fifth valve is opened, the third pipeline and the fourth pipeline are connected in parallel, and when the sixth valve is opened and the fifth valve is closed, the third pipeline and the fourth pipeline are connected in series.

7. The polyester slurry preparation system according to claim 6, characterized in that: The first valve, the second valve, the bypass valve, the third valve, the fourth valve, the fifth valve and the sixth valve are solenoid valves or electric valves.

8. The polyester slurry preparation system according to claim 1, characterized in that: The first pipeline is provided with a first pressure sensor, the second pipeline is provided with a second pressure sensor, the third pipeline is provided with a third pressure sensor, and the fourth pipeline is provided with a fourth pressure sensor; The first pressure sensor is used to sense the feed pressure data formed by the movement of the first feed pump, the second pressure sensor is used to sense the feed pressure data formed by the movement of the second feed pump, the third pressure sensor is used to sense the delivery pressure data formed after filtering through the first precision filter, and the fourth pressure sensor is used to sense the delivery pressure data formed after filtering through the second precision filter; The first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are connected to the main control circuit and can send the sensed pressure data to the main control circuit.

9. The polyester slurry preparation system according to claim 8, characterized in that: The polyester slurry dispensing system further includes a display module. The output end of the main control circuit is connected to the input end of the display module and can send a control signal to the display module.

10. The polyester slurry preparation system according to claim 1, characterized in that: The output pipeline is provided with a control valve.

Images