Preparation method of regenerated bottle-grade polyester chip

Abstract

The invention is applicable to the technical field of regenerated bottle-grade polyester chip preparation, and particularly relates to a regenerated bottle-grade polyester chip preparation method which comprises the following steps: in response to a first instruction, starting a regenerated bottle-grade polyester chip preparation task; the method comprises the following steps: acquiring heating preparation information at each time in the preparation process of regenerated bottle-grade polyester chips; acquiring the number of heating sources in the regenerated bottle-grade polyester chip preparation device under the condition that the acquired heating preparation information of two adjacent time is different; and adjusting a heating control strategy based on the obtained number of the heating sources in the regenerated bottle-grade polyester chip preparation device. According to the preparation method of the regenerated bottle-grade polyester chip, the problems that in the traditional preparation process of the regenerated bottle-grade polyester chip, manual monitoring and adjustment are often needed, the influence of human factors is easily caused, optimization cannot be carried out according to actual needs, and the preparation efficiency is low can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of preparation of recycled bottle-grade polyester chips, and in particular to a method for preparing recycled bottle-grade polyester chips. Background Art

[0002] Recycled bottle-grade polyester chips are a high-performance material made by recycling and reprocessing discarded polyester (e.g., polyethylene terephthalate) bottles and are widely used in food and beverage packaging, textiles and other fields.

[0003] The traditional preparation process of recycled bottle-grade polyester chips often requires manual monitoring and adjustment, which is easily affected by human factors and cannot be optimized according to actual needs, resulting in low preparation efficiency. Summary of the invention

[0004] The embodiment of the present application provides a method for preparing recycled bottle-grade polyester chips, which can solve the problem that the traditional preparation process of recycled bottle-grade polyester chips often requires manual monitoring and adjustment, is easily affected by human factors, and cannot be optimized according to actual needs, resulting in low preparation efficiency.

[0005] In a first aspect, an embodiment of the present application provides a method for preparing recycled bottle-grade polyester chips, which is applied to a device for preparing recycled bottle-grade polyester chips, comprising:

[0006] In response to the first instruction, the task of preparing recycled bottle-grade polyester chips is started; wherein the first instruction carries the preparation process of recycled bottle-grade polyester chips;

[0007] In the process of preparing recycled bottle-grade polyester chips, heating preparation information at each time is obtained; wherein the heating preparation information is used to reflect whether a heating action is currently being performed;

[0008] When the heating preparation information obtained at two adjacent times is different, the number of heating sources in the recycled bottle-grade polyester chip preparation device is obtained;

[0009] Based on the number of heating sources in the recycled bottle-grade polyester chip preparation device, the heating control strategy is adjusted; wherein the heating control strategy is used to reflect the control ratio of the heating control channel.

[0010] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0011] The method for preparing recycled bottle-grade polyester chips provided by the present application can reduce the complexity of manual operation, reduce the risk of human error, and help improve the overall preparation efficiency by starting the preparation task of recycled bottle-grade polyester chips in response to the first instruction. Secondly, in the preparation process of recycled bottle-grade polyester chips, the heating preparation information at each time is obtained, the state of the heating process can be monitored in real time, any abnormality in the heating link can be discovered in time, and invalid waiting or waste in the heating process can be avoided, thereby improving the preparation efficiency. Secondly, when the heating preparation information at two adjacent times is different, the number of heating sources in the preparation device of recycled bottle-grade polyester chips is obtained, which can provide data support for the subsequent adjustment of the heating strategy, so that the preparation device of recycled bottle-grade polyester chips can automatically adjust the heating process based on the actual situation of the heating source, thereby helping to improve the preparation efficiency. Then, based on the number of heating sources in the preparation device of recycled bottle-grade polyester chips obtained, the heating control strategy is adjusted, which can reduce energy waste and reduce energy consumption in the production process by making the most effective use of the heating source, which helps to improve the overall preparation efficiency.

[0012] In a possible implementation of the first aspect, the recycled bottle-grade polyester chip preparation equipment includes a recycled bottle-grade polyester chip preparation device, and a control device electrically connected to the recycled bottle-grade polyester chip preparation device, which adjusts a heating control strategy based on the number of heating sources in the recycled bottle-grade polyester chip preparation device obtained, including:

[0013] The heating preparation information of the recycled bottle-grade polyester chip preparation device obtained at the first time is preset information; wherein the control device controls the recycled bottle-grade polyester chip preparation device to heat through the heating control channel; the heating control channel corresponding to the control device is set to the first information, and the first information is used to indicate the control ratio of the heating control channel corresponding to the control device at the current time; the control ratio set by the first information at the first time is associated with the preset information;

[0014] When the heating preparation information of the recycled bottle-grade polyester chip preparation device is obtained as target information at the second time, it is determined that the heating control channel corresponding to the control device is set to the second information; wherein the second information is used to indicate the target control ratio of the heating control channel corresponding to the control device; the control ratio set by the second information at the second time is associated with the preset information; the first time is earlier than the second time;

[0015] If the control ratio set for the first information at the first time does not match the control ratio set for the second information at the second time, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is greater than or equal to a preset number, the control ratio of the first information is changed to the control ratio set for the second information at the second time.

[0016] In a possible implementation manner of the first aspect, the method further includes:

[0017] When the preset information is non-heating information, the control ratio of the first information at the first time is a first ratio;

[0018] When the target information is heating information, the control ratio of the second information at the second time is a second ratio; wherein the second ratio is greater than the first ratio.

[0019] In a possible implementation manner of the first aspect, the method further includes:

[0020] When the preset information is heating information, the control ratio of the first information at the first time is a second ratio;

[0021] When the target information is non-heating information, the control ratio of the second information at the second time is the first ratio.

[0022] In a possible implementation manner of the first aspect, when the heating preparation information of the recycled bottle-grade polyester chip preparation device is obtained as target information at the second time, after determining that the heating control channel corresponding to the control device is set to the second information, the method further includes:

[0023] If the control ratio set by the first information at the first time matches the control ratio set by the second information at the second time, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is less than a preset number, the control ratio of the first information will not be changed.

[0024] In a possible implementation manner of the first aspect, the method further includes:

[0025] Determine the quality status of raw materials by real-time monitoring of process parameters during production;

[0026] When the quality status is the first status, the current production process is terminated and a reprocessing activity is initiated; wherein the first status is a status in which the equipment operates normally but the product does not meet the standards;

[0027] When the current production process is terminated, if a modifier addition instruction is detected, the modifier addition instruction is stored; when the quality state is the first state, if the modifier addition instruction is obtained, the additive injection operation is performed; wherein, the initiation of the reprocessing activity includes performing a product reprocessing activity when the upper limit of the reprocessing times is not reached and the process adjustment conditions are met.

[0028] In a possible implementation manner of the first aspect, the process parameter characterizes an intrinsic viscosity value of the polyester.

[0029] In a possible implementation manner of the first aspect, the method further includes:

[0030] When the process parameter is the intrinsic viscosity value of the polyester, and the intrinsic viscosity value of the polyester exceeds a preset threshold, the quality state is the first state.

[0031] In a possible implementation manner of the first aspect, after the quality status is the first status, the current production process is terminated, and the reprocessing activity is started, the method further includes:

[0032] The production line status flag is determined as a lock value; wherein, the lock value indicates that the current stage is in process abnormality repair stage, and new batches of raw materials are prohibited from being added.

[0033] In a second aspect, an embodiment of the present application provides a system for preparing recycled bottle-grade polyester chips, which is used to implement the method for preparing recycled bottle-grade polyester chips described in any one of the first aspects above, and is applied to a device for preparing recycled bottle-grade polyester chips, the system comprising:

[0034] A response unit, configured to start a task of preparing recycled bottle-grade polyester chips in response to a first instruction; wherein the first instruction carries a preparation process of recycled bottle-grade polyester chips;

[0035] An acquisition unit is used to acquire heating preparation information at each time during the preparation process of recycled bottle-grade polyester chips; wherein the heating preparation information is used to reflect whether a heating action is currently being performed;

[0036] A detection unit, used for obtaining the number of heating sources in the recycled bottle-grade polyester chip preparation device when the heating preparation information obtained at two adjacent times is different;

[0037] An adjustment unit is used to adjust a heating control strategy based on the acquired number of heating sources in the recycled bottle-grade polyester chip preparation device; wherein the heating control strategy is used to reflect the control ratio of the heating control channel.

[0038] In a third aspect, an embodiment of the present application provides a device for preparing recycled bottle-grade polyester chips, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for preparing recycled bottle-grade polyester chips described in any one of the first aspects above when executing the computer program.

[0039] It can be understood that the beneficial effects of the second to third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 It is a schematic diagram of a process for preparing recycled bottle-grade polyester chips provided in one embodiment of the present application;

[0042] Figure 2 It is a schematic diagram of a process for implementing the adjustment of the control ratio of the heating control channel in the method for preparing recycled bottle-grade polyester chips provided in one embodiment of the present application;

[0043] Figure 3 It is a schematic diagram of the implementation process of product reprocessing activities in the method for preparing recycled bottle-grade polyester chips provided in one embodiment of the present application;

[0044] Figure 4 It is a structural schematic diagram of a system for preparing recycled bottle-grade polyester chips provided in an embodiment of the present application;

[0045] Figure 5 It is a schematic diagram of the structure of the equipment for preparing recycled bottle-grade polyester chips provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0047] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0048] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0049] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting" depending on the context. Similarly, the phrase "if it is determined" or "if the described condition or event is detected" can be interpreted as meaning "uponce determined" or "in response to determining" or "uponce the described condition or event is detected" or "in response to detecting the described condition or event" depending on the context.

[0050] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0051] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0052] In the related art, recycled bottle-grade polyester chips are a high-performance material made by recycling and reprocessing discarded polyester (e.g., polyethylene terephthalate) bottles, and are widely used in food and beverage packaging, textiles and other fields.

[0053] The traditional preparation process of recycled bottle-grade polyester chips often requires manual monitoring and adjustment, which is easily affected by human factors and cannot be optimized according to actual needs, resulting in low preparation efficiency.

[0054] In order to solve the above problems, the embodiment of the present application provides a method for preparing recycled bottle-grade polyester chips.

[0055] In this method, by responding to the first instruction and starting the recycled bottle-grade polyester chip preparation task, the complexity of manual operation can be reduced, the risk of human error can be reduced, and the overall preparation efficiency can be improved. Secondly, in the process of preparing recycled bottle-grade polyester chips, the heating preparation information at each time is obtained, the state of the heating process can be monitored in real time, any abnormality in the heating link can be discovered in time, and ineffective waiting or waste in the heating process can be avoided, thereby improving the preparation efficiency. Thirdly, when the heating preparation information at two adjacent times is different, the number of heating sources in the recycled bottle-grade polyester chip preparation device is obtained, which can provide data support for the subsequent adjustment of the heating strategy, so that the recycled bottle-grade polyester chip preparation device can automatically adjust the heating process based on the actual situation of the heating source, thereby helping to improve the preparation efficiency. Then, based on the number of heating sources in the recycled bottle-grade polyester chip preparation device obtained, the heating control strategy is adjusted, which can reduce energy waste and reduce energy consumption in the production process by making the most effective use of the heating source, thereby helping to improve the overall preparation efficiency.

[0056] The method for preparing recycled bottle-grade polyester chips provided in the embodiment of the present application can be applied to recycled bottle-grade polyester chips preparation equipment. In this case, the recycled bottle-grade polyester chips preparation equipment is the executor of the method for preparing recycled bottle-grade polyester chips provided in the embodiment of the present application. The embodiment of the present application does not impose any restrictions on the specific type of recycled bottle-grade polyester chips preparation equipment.

[0057] For example, the equipment for preparing recycled bottle-grade polyester chips may include a recycled bottle-grade polyester chip preparation device and a control device electrically connected to the recycled bottle-grade polyester chip preparation device. The recycled bottle-grade polyester chip preparation device may include a cleaning device (e.g., a water washer), a heating device (e.g., an electric heater), a cooling device (e.g., an air cooler), and a slicing device (e.g., a slicer). The control device may control the cleaning device to clean pollutants and impurities on the surface of the recycled bottle. The control device may control the heating device to melt the cleaned recycled bottle into a polymer melt. The control device may control the cooling device to cool the polymer melt to obtain a solid polyester material. The control device may control the slicing device to cut the cooled solid polyester material into small slices.

[0058] For example, the control device can be a single chip microcomputer, a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a desktop computer, a computing device or a computer connected to a wireless modem, a laptop computer, a handheld communication device, a handheld computing device, etc.

[0059] In order to better understand the method for preparing recycled bottle-grade polyester chips provided in the embodiment of the present application, the specific implementation process of the method for preparing recycled bottle-grade polyester chips provided in the embodiment of the present application is exemplarily introduced below.

[0060] Figure 1 A schematic flow chart of a method for preparing recycled bottle-grade polyester chips provided in an embodiment of the present application is shown. The method for preparing recycled bottle-grade polyester chips comprises:

[0061] S100, in response to a first instruction, starting a task of preparing recycled bottle-grade polyester chips, wherein the first instruction carries a preparation process of recycled bottle-grade polyester chips.

[0062] It can be understood that the first instruction includes data such as raw material type, temperature, pressure, time, additives, etc.

[0063] For example, a first instruction is received, and the content of the first instruction is parsed to extract preparation process parameters, such as raw material type, temperature, pressure, time, additives, etc. The preparation system is configured according to the content of the first instruction to set the preparation process. According to the process requirements, the system automatically starts the cleaning device, heating device, cooling device and slicing device, etc. to run the recycled bottle-grade polyester chip preparation task.

[0064] By setting up in this way, by responding to the first instruction and starting the recycled bottle-grade polyester chip preparation task, the complexity of manual operation can be reduced, the risk of human error can be reduced, and the overall preparation efficiency can be improved.

[0065] S200, in the process of preparing recycled bottle-grade polyester chips, obtaining heating preparation information at each time, wherein the heating preparation information is used to reflect whether a heating action is currently being performed.

[0066] It can be understood that the heating preparation information can be temperature information. A threshold is set, and when the temperature is higher than a certain value, the system will record it as "heating", that is, the heating action is currently being performed; when the temperature is lower than the value, it will be recorded as "not heating", that is, the heating action is not currently being performed.

[0067] For example, a timer is set in the control program to record the temperature data of the heating at a fixed time interval (such as every second or every minute). The heating preparation information can be obtained through the installed temperature sensor.

[0068] With such an arrangement, during the preparation process of recycled bottle-grade polyester chips, the heating preparation information at each time can be obtained, the status of the heating process can be monitored in real time, any abnormality in the heating link can be discovered in time, and ineffective waiting or waste in the heating process can be avoided, thereby improving the preparation efficiency.

[0069] S300, when different heating preparation information is obtained at two adjacent times, the number of heating sources in the recycled bottle-grade polyester chip preparation device is obtained.

[0070] It is understood that the heating source can be an infrared heater, an electric heater, etc.

[0071] For example, each heating preparation information (such as "on", "off", temperature value, etc.) at each time point can be obtained in the system log. If the heating preparation information at adjacent moments (for example, T1 and T2) is different (such as the temperature changes), the number of current heating sources can be obtained through the device configuration file in the control system.

[0072] With such a setting, when different heating preparation information is obtained at two adjacent times, the number of heating sources in the recycled bottle-grade polyester chip preparation device is obtained, which can provide data support for the subsequent adjustment of the heating strategy, so that the recycled bottle-grade polyester chip preparation equipment can automatically adjust the heating process based on the actual situation of the heating source, thereby helping to improve the preparation efficiency.

[0073] S400, adjusting the heating control strategy based on the acquired number of heating sources in the recycled bottle-grade polyester chip preparation device, wherein the heating control strategy is used to reflect the control ratio of the heating control channel.

[0074] It can be understood that the heating control channel can be a channel that uses a PID control algorithm (e.g., proportional, integral, and differential) to adjust the heating process. The control device can control the heating process of the recycled bottle-grade polyester chips through the heating control channel. The larger the control ratio of the heating control channel, the more focused the control device is on controlling the heating process of the recycled bottle-grade polyester chips; conversely, the less focused the control device is on controlling the heating process of the recycled bottle-grade polyester chips.

[0075] For example, according to the number of acquired heating sources, the control device dynamically adjusts the control power output ratio of each heating source using the heating control channel.

[0076] With such a setting, the heating control strategy is adjusted based on the number of heating sources in the recycled bottle-grade polyester chip preparation device. This can reduce energy waste and energy consumption in the production process by making the most effective use of the heating sources, thereby helping to improve the overall preparation efficiency.

[0077] In one possible implementation, see Figure 2 The recycled bottle-grade polyester chip preparation device includes a recycled bottle-grade polyester chip preparation device and a control device electrically connected to the recycled bottle-grade polyester chip preparation device. S400, based on the number of heating sources in the recycled bottle-grade polyester chip preparation device, adjust the heating control strategy, including:

[0078] S410, obtaining the heating preparation information of the recycled bottle-grade polyester chip preparation device as preset information at the first time. The control device controls the recycled bottle-grade polyester chip preparation device to heat through the heating control channel. The heating control channel corresponding to the control device is set to the first information, and the first information is used to indicate the control ratio of the heating control channel corresponding to the control device at the current time. The control ratio set by the first information at the first time is associated with the preset information.

[0079] It can be understood that the recycled bottle-grade polyester chip preparation equipment can have the capabilities of cleaning, heating, cooling and slicing. When the recycled bottle-grade polyester chip preparation equipment heats the raw material, the control ratio of the heating control channel can be increased, so that the control ratio of the heating control channel is greater than the control ratio of the cleaning control channel. The preset information can be information reflecting whether heating is currently in progress.

[0080] Among them, in the process of heating the raw materials by the recycled bottle-grade polyester chip preparation equipment, the control ratio of the heating control channel is greater than the control ratio of the cleaning control channel. In the process of heating the raw materials, the control ratio of the heating control channel will not be changed, so that the preparation control capability (for example, electricity, algorithm) can be given to the heating process to meet the demand of real-time adjustment of the power output of each heating source during the heating process.

[0081] However, in the process of heating the raw materials, the control ratio of the heating control channel is kept greater than the control ratio of the cleaning control channel. Therefore, when the recycled bottle-grade polyester chip preparation equipment needs to control the cleaning device through the cleaning control channel to process a large amount of raw materials, the cleaning capacity is affected due to the small control ratio of the cleaning control channel. In addition, when the cleaning device controls a large amount of raw materials through the cleaning control channel, it will also compete for the preparation control capacity of the heating control channel, thereby affecting the heating capacity, for example, it is impossible to adjust the power output of each heating source in real time.

[0082] Furthermore, when the control device controls multiple heating sources in the recycled bottle-grade polyester chip preparation device through the heating control channel, the control ratio of the heating control channel is adjusted to be greater than the control ratio of the cleaning control channel. Then, when one heating source is controlled through the heating control channel, at this time, the control ratio of the heating control channel is still greater than the control ratio of the cleaning control channel. Therefore, when the recycled bottle-grade polyester chip preparation device needs to control the cleaning device through the cleaning control channel to process a large amount of raw materials, the preparation control capacity of the heating control channel will be competed, thereby affecting the heating capacity, for example, the power output of each heating source cannot be adjusted in real time.

[0083] For example, the first information is set for the heating control channel. The first information is used to indicate the control ratio of the heating control channel corresponding to the control device at the current time. Since the heating preparation information of the recycled bottle-grade polyester chip preparation device obtained at the first time is preset information, the control ratio of the first information at the first time is associated with the preset information. When it is determined that the heating preparation information of the recycled bottle-grade polyester chip preparation device obtained at the first time is preset information, a ratio is set.

[0084] Such a setting, by associating the control ratio of the first information with the preset information, ensures that at different time points, the control ratio can be dynamically adjusted according to actual needs, thereby improving the flexibility and adaptability of the preparation.

[0085] S420, when the heating preparation information of the recycled bottle-grade polyester chip preparation device is obtained as the target information at the second time, determine that the heating control channel corresponding to the control device is set to the second information. The second information is used to indicate the target control ratio of the heating control channel corresponding to the control device. The control ratio set by the second information at the second time is associated with the preset information. The first time is earlier than the second time.

[0086] It can be understood that the first information is not heated or temporarily not heated, and the control ratio of the first information at the first time is the first ratio. The second information is heating, and the control ratio of the second information at the second time is the second ratio. Among them, the control ratio of the second ratio at the second time is greater than the control ratio of the first ratio at the first time.

[0087] Optionally, the first information is heating, and the control ratio of the first information at the first time is the second ratio. The second information is not heated or temporarily not heated, and the control ratio of the second information at the second time is the first ratio. The control ratio of the first ratio at the second time is less than the control ratio of the second ratio at the first time.

[0088] For example, at a second time greater than the first time, the heating state of the recycled bottle-grade polyester chip preparation device changes, that is, changes from the above-mentioned first information to the second information. Since a second information is set for the heating control channel, the second information indicates the target control ratio of the heating control channel corresponding to the control device. When it is determined that the first information has changed to the second information, the target control ratio of the second information can be determined.

[0089] Among them, from the change of the above-mentioned first information into the second information, it can be known that the control ratio of the heating control channel corresponding to the control device needs to be reduced. However, in the present application, the control ratio of the heating control channel corresponding to the control device will not be adjusted immediately in step S420, but steps S430 and S440 are used to determine whether to change the control ratio of the heating control channel corresponding to the control device.

[0090] Such a setting, by associating the control ratio of the second information with the target information, ensures that at different time points, the control ratio can be dynamically adjusted according to actual needs, thereby improving the flexibility and adaptability of the preparation.

[0091] S430, if the control ratio set by the first information at the first time does not match the control ratio set by the second information at the second time, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is greater than or equal to a preset number, the control ratio of the first information is changed to the control ratio set by the second information at the second time.

[0092] It can be understood that if the control ratio set by the first information at the first time does not match the control ratio set by the second information at the second time, it means that the current real-time control ratio of the heating control channel corresponding to the control device does not match the target control ratio of the heating control channel corresponding to the control device, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is greater than or equal to the preset number. The control ratio of the first information can be changed to the control ratio set by the second information at the second time, thereby increasing the control ratio of the heating control channel corresponding to the control device, so that the control ratio of the heating control channel is adjusted to be greater than the control ratio of the cleaning control channel.

[0093] For example, if the heating state is not heated or temporarily not heated at the first time, the control ratio of the first information at the first time is 20%. Then, if the heating state is heated at the first time, the control ratio of the second information at the second time is 50%. It can be determined that the control ratio set by the first information at the first time does not match the control ratio set by the second information at the second time, and the control device controls the number of heating sources in the recycled bottle-grade polyester chip preparation device through the heating control channel to be greater than or equal to the preset number. Therefore, it is determined that the control ratio of the first information is changed to the control ratio set by the second information at the second time, that is, from 20% to 50%.

[0094] Alternatively, if the control ratio set by the first information at the first time does not match the control ratio set by the second information at the second time, but the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is less than the preset number, then it is determined that the current real-time control ratio of the heating control channel corresponding to the control device is still 20% of the control ratio of the first information at the first time. In this way, even when the recycled bottle-grade polyester chip preparation equipment needs to control the cleaning device through the cleaning control channel to process a large amount of raw materials, there is sufficient control and preparation capacity to give the cleaning control channel, which can meet the cleaning capacity on the one hand. On the other hand, it can avoid competing for the preparation control capacity of the heating control channel, thereby avoiding affecting the heating capacity.

[0095] Such a setting can automatically adjust the control ratio according to different scenarios (such as changes in the number of heating sources), enhance the adaptability and flexibility of the system, and thus avoid competing with the capacity of the heating control channel.

[0096] In a possible implementation, the method for preparing recycled bottle-grade polyester chips further includes:

[0097] S401, when the preset information is non-heating information, the control ratio of the first information at the first time is the first ratio.

[0098] It can be understood that when the preset information is non-heating information, the system will reduce the control ratio of the heating control channel and set it to the first ratio, thereby allocating more preparation control capabilities (such as power, algorithms) to other processes (such as cleaning).

[0099] S402, when the target information is heating information, the control ratio of the second information at the second time is a second ratio, wherein the second ratio is greater than the first ratio.

[0100] It can be understood that when the target information is heating information, the system will increase the control ratio of the heating control channel and set it to the second ratio, thereby allocating more preparation control capabilities (such as power, algorithms) to the heating process.

[0101] In a possible implementation, the method for preparing recycled bottle-grade polyester chips further includes:

[0102] S403, when the preset information is heating information, the control ratio of the first information at the first time is the second ratio.

[0103] It can be understood that when the preset information is heating information, the system will increase the control ratio of the heating control channel and set it to the second ratio, thereby allocating more preparation control capabilities (such as electricity, algorithms) to the heating process.

[0104] S404, when the target information is non-heating information, the control ratio of the second information at the second time is the first ratio.

[0105] It can be understood that when the target information is unheated information, the system will reduce the control ratio of the heating control channel and set it to the first ratio, thereby allocating more preparation control capabilities (such as electricity, algorithms) to other processes (such as cleaning).

[0106] In a possible implementation, in step S420, when the heating preparation information of the recycled bottle-grade polyester chip preparation device is obtained as the target information at the second time, after determining that the heating control channel corresponding to the control device is set to the second information, the recycled bottle-grade polyester chip preparation method further includes:

[0107] S440, if the control ratio set by the first information at the first time matches the control ratio set by the second information at the second time, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is less than the preset number, the control ratio of the first information will not be changed.

[0108] It can be understood that if the control ratio set by the first information at the first time matches the control ratio set by the second information at the second time, it means that the current real-time control ratio of the heating control channel corresponding to the control device matches the target control ratio of the heating control channel corresponding to the control device, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is less than the preset number, then the current real-time control ratio of the heating control channel corresponding to the control device is determined to be still the control ratio of the first information, that is, the control ratio of the heating control channel will not be controlled to be greater than the control ratios of other control channels (for example, the cleaning control channel).

[0109] Such a setting can automatically adjust the control ratio according to different scenarios (such as changes in the number of heating sources), enhance the adaptability and flexibility of the system, and thus avoid competing with the capacity of the heating control channel.

[0110] In one possible implementation, see Figure 3 The method for preparing recycled bottle-grade polyester chips also includes:

[0111] S500 determines the quality status of raw materials by real-time monitoring of process parameters during the production process.

[0112] It is understood that the process parameters may be temperature, pressure, flow rate, viscosity, reaction time, etc.

[0113] For example, sensors and monitoring equipment can be used to collect process parameters in the preparation process in real time. For each process parameter, a normal range and a warning value are set. The warning value can be determined by historical data analysis and laboratory test results. The real-time monitored data is compared with the set threshold. If certain parameters exceed the preset normal range, it may indicate that there is a problem with the quality of the raw materials. For example, if a key indicator of a process parameter (such as viscosity) exceeds a preset threshold, the quality status can be marked as "abnormal" or "first state".

[0114] With this setup, real-time monitoring can promptly detect abnormal changes in process parameters, so that corrective measures can be taken quickly to ensure that the final product meets quality standards, help reduce waste due to unqualified raw materials, reduce production losses, and improve resource utilization.

[0115] S600, when the quality status is the first status, the current production process is terminated and the reprocessing activity is started. The first status is a status where the equipment operates normally but the product does not meet the standards.

[0116] It is understood that if it is detected that certain process parameters exceed the set normal range or reach the warning value, this indicates that there is a problem with the quality of the product. At this time, it can be determined that the system has entered the first state (the equipment is operating normally but the product is unqualified). When the quality state is monitored to be the first state, the production control system can automatically terminate the current production process. For example, it can be controlled by an automated control system such as a PLC (programmable logic controller) or a DCS (distributed control system), execute a production line shutdown command, and immediately stop the continued processing of the raw materials.

[0117] With this setup, real-time monitoring and triggered automatic shutdowns can react as soon as problems begin to appear, preventing the mass production of defective products, thereby reducing material waste and production losses.

[0118] S700, when the current production process is terminated, if a modifier addition instruction is detected, the modifier addition instruction is stored. When the quality state is the first state, if a modifier addition instruction is obtained, the additive injection operation is performed. Initiating the reprocessing activity includes performing the product reprocessing activity when the upper limit of the reprocessing times is not reached and the process adjustment conditions are met.

[0119] It can be understood that when the quality status is the first state, the system needs to check whether a modifier addition instruction is received. These instructions can be generated by production personnel or automation systems. If a modifier addition instruction is detected, the system will temporarily store the instruction instead of executing it immediately. The storage process can be to write the modifier addition instruction into a database or buffer, waiting for the triggering of subsequent operations. When storing instructions, it is necessary to determine whether subsequent conditions (such as the upper limit of reprocessing times and process adjustment conditions) are met. In the first state, the system will check whether the conditions for starting the reprocessing activity are met, for example, if the upper limit of the reprocessing number is not reached: track the number of reprocessings that have been performed, and determine whether new reprocessing can be performed based on the set upper limit. If the upper limit is reached, the activity will no longer be executed. Process adjustment conditions are met: according to the preset process adjustment rules (such as whether the temperature, pressure, viscosity, flow rate, etc. meet the allowable adjustment range), determine whether the process adjustment requirements are met. If both conditions are met, the system is ready to start the reprocessing activity. When the conditions are met (the upper limit of the reprocessing number is not reached, and the process conditions are suitable), the system will perform operations according to the previously stored modifier addition instruction. During the preparation process, the injection operation of the modifier is automatically controlled according to the stored instructions. For example, the type, quantity and injection method of the modifier can be set according to the preparation process and product requirements.

[0120] This setting, by storing the modifier addition instructions and executing them when the conditions are met, avoids the waste of resources or mismatch of process parameters caused by premature execution. The system can make flexible adjustments based on real-time working conditions and process conditions to ensure the maximum effect of each modifier addition and avoid executing operations at inappropriate times, thereby adjusting the process more effectively and reducing unnecessary additive consumption and production costs.

[0121] In one possible implementation, the process parameter characterizes the intrinsic viscosity value of the polyester.

[0122] It is understood that the intrinsic viscosity of polyester can be used to characterize the effect of the molecular chain length and molecular structure of polyester on fluidity, and can be measured by using a rotational viscometer or a capillary viscometer.

[0123] In a possible implementation, the method for preparing recycled bottle-grade polyester chips further includes:

[0124] When the process parameter is the intrinsic viscosity value of the polyester, and the intrinsic viscosity value of the polyester exceeds a preset threshold, the quality state is the first state.

[0125] It can be understood that the intrinsic viscosity of polyester can refer to the ratio of the viscosity of the polymer solution to the concentration under specific temperature conditions, which is used to evaluate the molecular weight of the polyester and its flow properties during processing. A specific viscosity value threshold is set as a standard for determining the quality status. For example, the intrinsic viscosity value exceeds a certain value (such as 0.8dL / g). Online viscosity measuring instruments (such as capillary viscometers, rotational viscometers, etc.) can be used to monitor the intrinsic viscosity value of polyester in the polyester production process in real time. If the intrinsic viscosity value of the polyester exceeds the preset threshold, the quality status is the first state. Otherwise, it means that the equipment is operating normally and the product meets the standards.

[0126] With this setting, by real-time monitoring of the intrinsic viscosity value of polyester, deviations can be discovered in time to ensure that the product is within the preset quality range.

[0127] In a possible implementation, in step S600, after the quality state is the first state, the current production process is terminated, and the reprocessing activity is started, the method for preparing recycled bottle-grade polyester chips further includes:

[0128] The production line status flag is determined as a lock value, wherein the lock value indicates that the process is currently in the process of repairing abnormalities, and new batches of raw materials are prohibited from being added.

[0129] It can be understood that a status flag can be created, and enumerations or constants can be used to represent different states, such as NORMAL (normal operation), LOCKED (locked state, process abnormality repair stage), MAINTENANCE (maintenance state), etc.

[0130] For example, after starting the reprocessing activity, set the production line status flag and the number of starts. The number of starts is used to indicate whether the reprocessing activity is being started. If the reprocessing activity is being started, the production line status flag is determined to be a locked value. In the locked state, the system disables the feeding operation of a new batch of raw materials. For example, buttons, sensors or control modules related to the feeding system are disabled to prevent feeding operations. Set a feeding ban: Through logical control, if the status flag is a "locked value", further feeding of raw materials to the production line is prohibited. Once the process abnormality is repaired and it is confirmed that the production process has returned to normal, the system needs to update the status flag and switch from the "locked value" back to the normal production state.

[0131] Such a setting can effectively avoid more serious accidents or product quality problems caused by improper raw material feeding and ensure the safety of production operations.

[0132] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0133] Corresponding to the method for preparing recycled bottle-grade polyester chips described in the above embodiment, the embodiment of the present application also provides a system for preparing recycled bottle-grade polyester chips, and each unit of the system can implement each step of the method for preparing recycled bottle-grade polyester chips. Figure 4 A structural block diagram of a system for preparing recycled bottle-grade polyester chips provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0134] Reference Figure 4 , the recycled bottle-grade polyester chip preparation system includes:

[0135] The response unit is used to start the task of preparing recycled bottle-grade polyester chips in response to the first instruction, wherein the first instruction carries the preparation process of recycled bottle-grade polyester chips.

[0136] The acquisition unit is used to acquire the heating preparation information at each time during the preparation process of the recycled bottle-grade polyester chips, wherein the heating preparation information is used to reflect whether the heating action is currently being performed.

[0137] The detection unit is used to obtain the number of heating sources in the recycled bottle-grade polyester chip preparation device when different heating preparation information is obtained at two adjacent times.

[0138] The adjustment unit is used to adjust the heating control strategy based on the number of heating sources in the recycled bottle-grade polyester chip preparation device obtained, wherein the heating control strategy is used to reflect the control ratio of the heating control channel.

[0139] It should be noted that the information interaction, execution process, etc. between the above-mentioned systems / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0140] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units is used as an example for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units as needed, that is, the internal structure of the system can be divided into different functional units to complete all or part of the functions described above. The functional units in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0141] The present application also provides a device for preparing recycled bottle-grade polyester chips. Figure 5 This is a schematic diagram of the structure of a recycled bottle-grade polyester chip preparation device provided in one embodiment of the present application. Figure 5 As shown, the recycled bottle-grade polyester chip preparation device 6 of this embodiment includes: at least one processor 60 ( Figure 5 Only one is shown), at least one memory 61 ( Figure 5 Only one is shown in the figure) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, the recycled bottle-grade polyester chip preparation equipment 6 implements the steps in any of the above-mentioned recycled bottle-grade polyester chip preparation method embodiments, or the recycled bottle-grade polyester chip preparation equipment 6 implements the functions of each unit in the above-mentioned system embodiments.

[0142] Exemplarily, the computer program 62 may be divided into one or more units, which are stored in the memory 61 and executed by the processor 60 to complete the present application. The one or more units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 62 in the recycled bottle-grade polyester chip preparation device 6.

[0143] The equipment for preparing recycled bottle-grade polyester chips may include a device for preparing recycled bottle-grade polyester chips and a control device electrically connected to the device for preparing recycled bottle-grade polyester chips. The device for preparing recycled bottle-grade polyester chips may include a cleaning device (e.g., a water washer), a heating device (e.g., an electric heater), a cooling device (e.g., an air cooler), and a slicing device (e.g., a slicer), etc. The control device may control the cleaning device to clean the pollutants and impurities on the surface of the recycled bottle. The control device may control the heating device to melt the cleaned recycled bottle into a polymer melt. The control device may control the cooling device to cool the polymer melt to obtain a solid polyester material. The control device may control the slicing device to cut the cooled solid polyester material into small slices. The equipment for preparing recycled bottle-grade polyester chips 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art may understand that Figure 5 It is only an example of the recycled bottle-grade polyester chip preparation equipment 6 and does not constitute a limitation on the recycled bottle-grade polyester chip preparation equipment 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, for example, it may also include input and output devices, network access devices, buses, etc.

[0144] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0145] In some embodiments, the memory 61 may be an internal storage unit of the recycled bottle-grade polyester chip production device 6, such as a hard disk or memory of the recycled bottle-grade polyester chip production device 6. In other embodiments, the memory 61 may also be an external storage device of the recycled bottle-grade polyester chip production device 6, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the recycled bottle-grade polyester chip production device 6. Further, the memory 61 may also include both the internal storage unit of the recycled bottle-grade polyester chip production device 6 and an external storage device. The memory 61 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0146] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0147] An embodiment of the present application provides a computer program product. When the computer program product is run on a recycled bottle-grade polyester chip production device, the recycled bottle-grade polyester chip production device implements the steps in any of the above-mentioned method embodiments.

[0148] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the recycled bottle-grade polyester chip preparation equipment, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0149] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0150] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0151] In the embodiments provided in the present application, it should be understood that the disclosed recycled bottle-grade polyester chip preparation equipment, recycled bottle-grade polyester chip preparation system and recycled bottle-grade polyester chip preparation method can be implemented in other ways. For example, the above-described recycled bottle-grade polyester chip preparation equipment and recycled bottle-grade polyester chip preparation system embodiments are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0152] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0153] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for preparing recycled bottle-grade polyester chips, characterized in that: Applied to a device for preparing recycled bottle-grade polyester chips, the method comprises: In response to the first instruction, the task of preparing recycled bottle-grade polyester chips is started; wherein the first instruction carries the preparation process of recycled bottle-grade polyester chips; In the process of preparing recycled bottle-grade polyester chips, heating preparation information at each time is obtained; wherein the heating preparation information is used to reflect whether a heating action is currently being performed; When the heating preparation information obtained at two adjacent times is different, the number of heating sources in the recycled bottle-grade polyester chip preparation device is obtained; Based on the obtained number of heating sources in the recycled bottle-grade polyester chip preparation device, the heating control strategy is adjusted; wherein the heating control strategy is used to reflect the control ratio of the heating control channel.

2. The method for preparing recycled bottle-grade polyester chips according to claim 1, characterized in that: The recycled bottle-grade polyester chip preparation equipment includes a recycled bottle-grade polyester chip preparation device, and a control device electrically connected to the recycled bottle-grade polyester chip preparation device. Based on the number of heating sources in the recycled bottle-grade polyester chip preparation device, a heating control strategy is adjusted, including: The heating preparation information of the recycled bottle-grade polyester chip preparation device obtained at the first time is preset information; wherein the control device controls the recycled bottle-grade polyester chip preparation device to heat through the heating control channel; the heating control channel corresponding to the control device is set to the first information, and the first information is used to indicate the control ratio of the heating control channel corresponding to the control device at the current time; the control ratio set by the first information at the first time is associated with the preset information; When the heating preparation information of the recycled bottle-grade polyester chip preparation device is obtained as target information at the second time, it is determined that the heating control channel corresponding to the control device is set to the second information; wherein the second information is used to indicate the target control ratio of the heating control channel corresponding to the control device; the control ratio set by the second information at the second time is associated with the preset information; the first time is earlier than the second time; If the control ratio set for the first information at the first time does not match the control ratio set for the second information at the second time, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is greater than or equal to a preset number, the control ratio of the first information is changed to the control ratio set for the second information at the second time.

3. The method for preparing recycled bottle-grade polyester chips according to claim 2, characterized in that: The method further comprises: When the preset information is non-heating information, the control ratio of the first information at the first time is a first ratio; When the target information is heating information, the control ratio of the second information at the second time is a second ratio; wherein the second ratio is greater than the first ratio.

4. The method for preparing recycled bottle-grade polyester chips according to claim 2, characterized in that: The method further comprises: When the preset information is heating information, the control ratio of the first information at the first time is a second ratio; When the target information is non-heating information, the control ratio of the second information at the second time is the first ratio.

5. The method for preparing recycled bottle-grade polyester chips according to claim 2, characterized in that: When the heating preparation information of the recycled bottle-grade polyester chip preparation device is obtained as the target information at the second time, after determining that the heating control channel corresponding to the control device is set to the second information, the method further includes: If the control ratio set by the first information at the first time matches the control ratio set by the second information at the second time, and the number of heating sources in the recycled bottle-grade polyester chip preparation device controlled by the control device through the heating control channel is less than a preset number, the control ratio of the first information will not be changed.

6. The method for preparing recycled bottle-grade polyester chips according to claim 2, characterized in that: The method further comprises: Determine the quality status of raw materials by real-time monitoring of process parameters during production; When the quality status is the first status, the current production process is terminated and a reprocessing activity is initiated; wherein the first status is a status in which the equipment operates normally but the product does not meet the standards; When the current production process is terminated, if a modifier addition instruction is detected, the modifier addition instruction is stored; when the quality state is the first state, if the modifier addition instruction is obtained, the additive injection operation is performed; wherein, the initiation of the reprocessing activity includes performing a product reprocessing activity when the upper limit of the reprocessing times is not reached and the process adjustment conditions are met.

7. The method for preparing recycled bottle-grade polyester chips according to claim 6, characterized in that: The process parameters characterize the intrinsic viscosity value of the polyester.

8. The method for preparing recycled bottle-grade polyester chips according to claim 7, characterized in that: The method further comprises: When the process parameter is the intrinsic viscosity value of the polyester, and the intrinsic viscosity value of the polyester exceeds a preset threshold, the quality state is the first state.

9. The method for preparing recycled bottle-grade polyester chips according to claim 6, characterized in that: After the quality status is the first status, the current production process is terminated, and the reprocessing activity is started, the method further includes: The production line status flag is determined as a lock value; wherein, the lock value indicates that the current stage is in process abnormality repair stage, and new batches of raw materials are prohibited from being added.

10. A device for preparing recycled bottle-grade polyester chips, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 9 when executing the computer program.

Images