Cleaning device for polyurethane processing vessel and optimized cleaning method thereof

Abstract

The invention discloses a cleaning device of a polyurethane processing vessel and an optimized cleaning method of the polyurethane processing vessel. The method comprises the steps that multi-view-angle images are collected and processed, and the residual quantity is calculated based on the Guluggin theorem; cleaning for multiple times and shooting an intermediate / second image; the residual quantity difference value is analyzed, a cleaning curve is drawn, the optimal duration and control parameters are determined, and follow-up cleaning is guided. The device comprises a cleaning shell, a control shell, a heating chamber, an ultrasonic transducer and a temperature control system. Through residual quantity detection and dynamic parameter optimization, precise cleaning is achieved, efficiency is improved, energy consumption is reduced, and the method is suitable for the polyurethane processing industry.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyurethane high polymer material cleaning, in particular to a polyurethane processing container cleaning device and an optimized cleaning method thereof. BACKGROUND

[0002] Polyurethane (PU), full name polyurethane, is a high polymer compound. It was invented by Otto Bayer in 1937. Polyurethane has two major categories: polyester and polyether. They can be made into polyurethane plastics (mainly foam plastics), polyurethane fibers (known as spandex in China), polyurethane rubber and elastomers. Soft polyurethane is mainly a linear structure with thermoplasticity, which has better stability, chemical resistance, resilience and mechanical properties than PVC foam materials, and has smaller compression deformation. It has good performance in heat insulation, sound insulation, shock resistance and anti-toxicity. Therefore, it is used as packaging, sound insulation and filtering materials. Hard polyurethane plastic is light in weight, has superior sound insulation and heat insulation performance, is resistant to chemicals, has good electrical properties, is easy to process, and has low water absorption. It is mainly used in construction, automotive, aerospace industries, and structural materials for thermal insulation. Polyurethane elastomer has properties between plastic and rubber, is resistant to oil, wear, low temperature, aging, and has high hardness and elasticity. It is mainly used in the shoe industry and medical industry. Polyurethane can also be used to make adhesives, coatings, synthetic leather, etc.

[0003] Whether in the preparation of the original solution or in the production of polyurethane products, the use of containers containing the original solution will involve the problem of residual original solution, which needs to be cleaned.

[0004] The existing cleaning of polyurethane original solution residues, (1) mostly through the way of chemical original solution dichloromethane and trichloromethane washing; (2) for the cleaning of the stirring head in the polyurethane mixing device, first needs to use dichloromethane for long time soaking, and after soaking is completed, still needs to use fire roasting method for cleaning. There are problems of original solution treatment after washing, and incomplete cleaning, and air pollution in the process of fire roasting, which is not conducive to environmental protection. Secondly, in the process of polyurethane processing, if the polyurethane remaining on the surface of the container is not completely cleaned, it will affect the quality of the subsequent products and shorten the service life of the container. The traditional cleaning method relies on fixed parameters (such as time and temperature), which cannot adapt to the difference in residual amount, resulting in incomplete cleaning or waste of resources. The existing image analysis technology is mostly based on two-dimensional plane, which is difficult to accurately calculate the residual volume; and lacks a dynamic optimization mechanism in the cleaning process, which cannot adjust the parameters in real time to improve the efficiency. Therefore, there is an urgent need for a cleaning system combining three-dimensional residual amount detection and intelligent parameter optimization.

[0005] In order to solve the problems in the prior art, the present application provides a polyurethane high polymer composite cleaning device and an optimized cleaning method to optimize the cleaning efficiency. SUMMARY

[0006] The polyurethane processing utensil cleaning device can effectively clean and remove the deposition of the original liquid on the surface of the object, can clean every gap without disassembling the object, saves time and does not cause any damage.

[0007] To achieve the above object, the present application provides the following technical scheme: An optimized cleaning method of a polyurethane processing utensil cleaning device, comprising the following steps: A database is constructed for storing various data in the cleaning process, including the image of the utensil to be cleaned, the calculated residual amount, the intermediate image and the second image of each cleaning, the residual amount mass difference between adjacent cleaning times, the cleaning time, and the control parameters of the cleaning device. S100, obtaining the first image of the utensil to be cleaned at different shooting angles, and processing the first image to obtain the area where polyurethane exists, calculating the volume content of polyurethane on the utensil to be cleaned according to the Goulujin calculation after calculating the area, and calculating the mass of polyurethane according to the volume content; S200, then placing the utensil to be cleaned into the cleaning device for cleaning, and cleaning the utensil multiple times at a preset time, and taking an intermediate image and a second image after cleaning; S300, processing the intermediate image and the second image in the same way as the processing of the first image, and calculating the residual amount mass difference between adjacent cleaning times, arranging the residual amount mass difference according to the cleaning time, drawing a cleaning curve, judging the best cleaning time according to the cleaning curve, and obtaining the control parameters of the cleaning device in the best cleaning time process, and guiding the cleaning device parameters in the subsequent cleaning process according to the control parameters.

[0008] The present application further provides that the shooting angles include front view, rear view, left view, right view, top view and overhead view angles of the utensil.

[0009] The present application further provides that the first image, the intermediate image and the second image are pre-processed, and the pre-processing includes image filtering and image segmentation.

[0010] The present application further provides that in the step S300 of drawing the cleaning curve, the cleaning time is taken as the horizontal coordinate and the residual amount mass difference is taken as the vertical coordinate.

[0011] In the above scheme, the residual amount is accurately calculated: through multi-view image acquisition and advanced image processing technology, the residual amount of polyurethane is accurately calculated according to Gou's theorem, which provides accurate basis for subsequent cleaning and avoids errors of traditional methods. The optimal cleaning parameters are determined: by drawing a cleaning curve and analyzing the residual amount quality difference between adjacent cleaning times, the optimal cleaning time and corresponding control parameters are determined to realize efficient and accurate cleaning and avoid incomplete cleaning or over-cleaning. Data-driven continuous optimization: a database is established to store various data during the cleaning process, and through analysis and learning of a large amount of data, the cleaning curve and cleaning parameters are continuously optimized to improve the intelligent level of the cleaning device and the cleaning efficiency. Reduce costs: avoid waste of water resources, energy and cleaning agents caused by over-cleaning, reduce production costs, and at the same time improve the service life of the utensils.

[0012] Another aspect of the present application provides a polyurethane processing utensil cleaning device for realizing the above-mentioned optimized cleaning method, which comprises a cleaning shell and a control shell, a cleaning chamber is formed in the cleaning shell, a placing basket for placing the objects to be cleaned is arranged in the cleaning chamber, a heating chamber is arranged between the control shell and the cleaning chamber, a heating pipe and an ultrasonic transducer are arranged in the heating chamber, a control generator is arranged in the control shell to control the temperature of the heating pipe and the frequency of the ultrasonic transducer, cleaning liquid is injected into the cleaning chamber, and the heating pipe is used to heat the cleaning liquid.

[0013] The present application further provides that a heat preservation layer is arranged between the heating chamber and the control shell, a heating pipe mounting hole is arranged on the heat preservation layer, ultrasonic transducers are arranged on both sides of the heating pipe mounting hole, a button switch and a temperature controller are arranged on the outer surface of the control shell, and a temperature sensor is arranged in the control shell to monitor the temperature of the cleaning liquid.

[0014] The present application further provides that a liquid discharge port is arranged on the side surface of the cleaning shell, the liquid discharge port communicates with the cleaning chamber, and the cleaned cleaning liquid is discharged through the liquid discharge port.

[0015] The present application further provides that an opening cover is arranged on the top of the cleaning shell.

[0016] The present application further provides that side heat preservation layers are arranged on both sides of the cleaning chamber, and the side heat preservation layers are connected with the heat preservation layer.

[0017] The present application further provides that a heating pipe protection plate is arranged between the cleaning chamber and the heating pipe, both ends of the heating pipe protection plate are fixed on a support plate, and the support plate is arranged on the side surface of the heating chamber.

[0018] The present application has at least one of the following beneficial effects: 1. Strong adaptability: the polyurethane processing utensil cleaning device can place different sizes of objects to be cleaned in the cleaning chamber according to needs, whether small or large utensils, can effectively clean, and expand the application range of the cleaning device.

[0019] 2. Non-destructive cleaning: the cleaning device adopts an ultrasonic transducer and a heating pipe, which can effectively remove dirt and pollutants on the surface of the object to be cleaned through the dual action of ultrasonic vibration and heating, and will not cause any damage to the surface of the object, protecting the original structure and performance of the object.

[0020] 3. Easy to operate: the control generator in the control housing of the cleaning device can accurately control the temperature of the heating pipe and the frequency of the ultrasonic transducer, which is easy to operate and improves the cleaning efficiency.

[0021] 4. Time saving: the cleaning device adopts ultrasonic and heating combination, which has fast cleaning speed and high efficiency, and greatly saves cleaning time compared with existing cleaning devices. In general, the polyurethane processing utensil cleaning device has obvious advantages in cleaning effect, adaptability, environmental protection, operation convenience and time efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings: Figure 1 is a sectional view of embodiment 1 of the present application Figure 2 is a structural schematic view of embodiment 1 of the present application.

[0023] Figure 3 is a flowchart of constructing a database according to embodiment 2 of the present application.

[0024] Reference signs: 1. push button switch; 2. temperature controller; 3. temperature sensor; 4. temperature sensor mounting port; 5. liquid discharge port; 6. cleaning chamber; 7. opening cover; 8. object basket; 9. heating pipe; 10. ultrasonic transducer; 11. heating pipe protection plate; 12. heat preservation layer; 13. heating pipe mounting hole; 14. control generator; 15. cleaning shell; 16. control housing; 17. heating chamber; 18. side heat preservation layer; 23. support plate; DETAILED DESCRIPTION

[0025] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0026] Example 1

[0027] like Figures 1-2 As shown, the present invention is a polyurethane processing vessel cleaning device for cleaning containers containing polyurethane. The cleaning device includes a cleaning housing 15 and a control housing 16, and the top of the cleaning housing 15 is provided with an opening cover 7.

[0028] A cleaning chamber 6 is formed inside the cleaning housing 15. A storage basket 8 for placing items to be cleaned is provided inside the cleaning chamber 6. A heating chamber 17 is provided between the control housing 16 and the cleaning chamber 6. A heating tube 9 and an ultrasonic transducer 10 are provided inside the heating chamber 17. A control generator 14 is provided inside the control housing 16 to control the temperature of the heating tube 9 and the frequency of the ultrasonic transducer 10. Cleaning fluid is injected into the cleaning chamber 6, and the heating tube 9 is used to heat the cleaning fluid.

[0029] Heating element 9 is model YXQ-50, with a power of 5kW and a frequency of 20kHz. Control generator 14 is model TF-2000, with a maximum output power of 2000W and a frequency range of 10kHz-50kHz.

[0030] A heat insulation layer 12 is provided between the heating chamber 17 and the control housing 16, and side heat insulation layers 18 are provided on both sides of the cleaning chamber, with the side heat insulation layers 18 connected to the heat insulation layer 12.

[0031] The insulation layer 12 is provided with heating tube mounting holes 13, and ultrasonic transducers 10 are provided on both sides of the heating tube mounting holes 13. The insulation layer 12 and the side insulation layer 18 are used to maintain the temperature of the cleaning fluid during the cleaning process. In order to further ensure the temperature of the cleaning fluid, a push-button switch 1 and a temperature controller 2 are provided on the outer surface of the control housing 16. A temperature sensor 3 is provided inside the control housing 16 to monitor the temperature of the cleaning fluid, and the temperature controller 2 is used to control the temperature of the cleaning fluid so that the cleaning fluid is always kept at the optimal cleaning temperature, which needs to be maintained at 90-100℃. The temperature sensor 3 is set in the temperature sensor mounting port 4 formed inside the control housing 16.

[0032] The cleaning housing 15 has a drain port 5 on its side, which is connected to the cleaning chamber 6 to discharge the cleaning liquid after cleaning.

[0033] A heating tube protection plate 11 is arranged between the cleaning chamber and the heating tube 9, both ends of the heating tube protection plate 11 are fixed on a support plate 23, the support plate 23 is located on the side of the heating chamber 17, and the heating tube 9 is protected by the heating tube protection plate 11.

[0034] The polyurethane processing utensil cleaning device of the present application can place different sizes of objects to be cleaned in the cleaning basket in the cleaning chamber as needed, effectively clean small utensils or large utensils, and expand the application range of the cleaning device. Non-destructive cleaning: the cleaning device of the present application uses an ultrasonic transducer and a heating tube, which can effectively remove dirt and pollutants on the surface of the object to be cleaned through the dual action of ultrasonic vibration and heating, and will not cause any damage to the surface of the object, protecting the original structure and performance of the object. The control generator is arranged in the control housing of the cleaning device, which can accurately control the temperature of the heating tube and the frequency of the ultrasonic transducer, and is easy to operate, improving the cleaning efficiency. Since the cleaning device of the present application uses a combination of ultrasonic waves and heating, the cleaning speed is fast and the efficiency is high, which greatly saves the cleaning time compared with existing cleaning devices. In general, the polyurethane processing utensil cleaning device of the present application has significant advantages in cleaning effect, adaptability, environmental protection, operation convenience and time efficiency.

[0035] Example 2

[0036] As Figure 3 shown, the present embodiment provides an optimized cleaning method for a polyurethane processing utensil cleaning device, comprising the following steps: A database is constructed for storing various data in the cleaning process, including images of utensils to be cleaned, calculated residual amount, intermediate images and second images of each cleaning, residual amount mass difference between adjacent cleaning times, cleaning time, and control parameters of the cleaning device. The process of constructing the database is as follows: S100, obtaining a first image of the utensil to be cleaned at different shooting angles, and processing the first image to obtain a region containing polyurethane, calculating the area of the region, and calculating the volume content of polyurethane on the utensil to be cleaned according to the Goulujin, and calculating the mass of polyurethane according to the volume content; S200, then placing the utensil to be cleaned into the cleaning device for cleaning, and cleaning the utensil multiple times at a preset time, and taking an intermediate image and a second image after each cleaning; S300, processing the intermediate image and the second image in the same way as the first image, and calculating the residual mass difference between adjacent cleaning times, arranging the residual mass difference according to the cleaning time, drawing a cleaning curve, judging the best cleaning time according to the cleaning curve, and obtaining the control parameters of the cleaning device in the best cleaning time, and guiding the cleaning device parameters in the subsequent cleaning process according to the control parameters. In the step S300, the cleaning curve is drawn, and the cleaning time is taken as the horizontal coordinate, and the residual mass difference is taken as the vertical coordinate.

[0037] The shooting angles include the front view, rear view, left view, right view, top view and overhead view of the utensil, that is, six images are shot under the above six viewing angles, the corresponding polyurethane area is found on the six images, the edge features of the area are extracted to calculate the area of the area, then the volume is calculated by combining the Gurley method through the area, and the mass is obtained according to the formula density multiplied by volume. The mass of each area is added to obtain the polyurethane residual mass under the first image, the intermediate image and the second image.

[0038] The first image, the intermediate image and the second image are preprocessed, and the preprocessing includes image filtering and image segmentation. Image filtering and image segmentation can adopt the means in the prior art, and the embodiment adopts the following scheme for specific polyurethane area: First, the image is filtered, and the image here includes the first image, the intermediate image and the second image, and the expression of image is used in the subsequent description: When filtering, the ideal low-pass filtering technology is used for filtering processing of the image, and the noise of the image is filtered out. A circular region is divided with the image spectrum center point as the center, and the r of the circular region is (fc´image size) / (2´fm), fc is the cutoff frequency, and fm is the maximum frequency; the original image passes in the circular region, and in the passing process, all frequencies in the circular region are not attenuated, and the image frequencies outside the circular region are filtered out. The passing function is expressed by the formula: ; Wherein, H represents the passing function of the ideal low-pass filter, also known as the transfer function, and the transfer result is divided into "1" and "0", "1" represents passing, S u, v fc represents the cutoff frequency of the ideal low-pass filter; W D represents the distance from the image spectrum center point to the image center point, if the cutoff frequency of the ideal low-pass filter is less than the distance from the image spectrum center point to the image center point, the image frequency is reserved, otherwise it is blocked. Assuming that the energy of each point of the image is not lost in the transmission process, the total energy is: ; ​Wherein, F indicates the energy sum of each point of the transmission process image; f(x, y) indicates the image pixel; x, y respectively indicate the horizontal coordinate and vertical coordinate of the image pixel point in the pixel coordinate system. A circular area with the image frequency as the center radius is covered on the image, and the image is subjected to low-pass ideal filtering, and the filtered image is: ; Wherein, B indicates the industrial part image subjected to low-pass ideal filtering processing. Considering the influence of the light change of the image acquisition environment, the brightness of the photographed image is uneven, and therefore the image is subjected to enhancement processing on the basis of the filtering processing. This time, the image is subjected to enhancement by using a Gaussian scale operator, and the formula is: ; Wherein, wherein, B*(x, y) indicates the image pixel subjected to enhancement processing; γ indicates a parameter matrix; c indicates a Gaussian scale, and the values of γ and c are selected according to the specific situation.

[0039] After the image is subjected to filtering and enhancement according to the above method, the polyurethane area is extracted by using an image segmentation method. The image segmentation method adopts a threshold segmentation method, and the specific process is as follows: Since the image is a color image, the image is subjected to graying before segmentation, and the threshold value is determined. The threshold value is calculated according to the standard deviation and the mean value of the adjacent pixel interval set of the pixel point of the gray image: The calculation formula is as follows: ; In the above formula, wherein, m indicates the standard deviation of the adjacent pixel interval set of any one pixel point on the gray image; i indicates the number of pixel points in the adjacent pixel interval set; e i indicates a discrete random variable on the gray image; k B*(x, y) indicates the gray distribution probability function of the gray image; h indicates the mean value of the adjacent pixel interval set of any one pixel point on the gray image. The adaptive threshold value is calculated according to the standard deviation and the mean value of the non-negative transformation, and the formula is: ; wherein, indicates the adaptive threshold value of the image segmentation; a 、 b respectively indicate two threshold parameters. The gray value of the pixel point in the gray image is compared with the threshold value, and the segmented image is: ; Wherein, g ( x, y ) indicates the segmented foreground image, that is, the image with the polyurethane area.

[0040] The residual amount can be accurately calculated in this embodiment: through multi-view image acquisition and advanced image processing technology, combined with Gouguin theorem to accurately calculate the residual amount of polyurethane, to provide accurate basis for subsequent cleaning, and avoid the errors of traditional methods. Determine the best cleaning parameters: by drawing the cleaning curve, analyzing the residual amount quality difference between adjacent cleaning times, determining the best cleaning time and corresponding control parameters, realizing efficient and accurate cleaning, and avoiding incomplete cleaning or over-cleaning. Data-driven continuous optimization: establish a database to store various data during the cleaning process, through analysis and learning of a large amount of data, continuously optimize the cleaning curve and cleaning parameters, improve the intelligent level of the cleaning device and the cleaning efficiency. Reduce costs: avoid waste of water resources, energy and cleaning agents caused by over-cleaning, reduce production costs, and at the same time improve the service life of the utensils.

[0041] As used in the specification and claims, certain terminology is used to refer to certain components. One of skill in the art will understand that hardware manufacturers can refer to the same component using different names. The specification and claims do not distinguish components based on differences in name, but rather based on differences in function. As used throughout the specification and claims, "comprising" is an open term, and thus should be interpreted to cover "comprising but not limited to." "Approximately" means within an acceptable error range for the corresponding function, which those of skill in the art will understand to be within a range of values that one of ordinary skill in the art would consider acceptable under the circumstances.

[0042] The foregoing description illustrates and describes several preferred embodiments of the present application. However, it is to be understood that the application is not limited to the above-described embodiments, and that various changes and modifications can be suggested to one skilled in the art. It is the intention that the application be limited only by the scope of the appended claims, including the full scope of equivalents thereof.

Claims

1. An optimized cleaning method for a polyurethane processing vessel cleaning device, characterized in that, Includes the following steps: A database is constructed to store various data during the cleaning process, including images of the vessels to be cleaned, calculated residual amounts, intermediate and second images from each cleaning cycle, the difference in residual amount between adjacent cleaning cycles, cleaning duration, and control parameters of the cleaning device. The process of constructing the database is as follows: S100: Acquire first images of the vessel to be cleaned from different shooting angles, process the first images to obtain the area where polyurethane exists, calculate the area of ​​the area, calculate the volume content of polyurethane on the vessel to be cleaned according to the gurukin, and calculate the mass of polyurethane according to the volume content. S200: Then the vessel to be cleaned is placed in the cleaning device for cleaning, and the vessel is cleaned multiple times at a preset time. After each cleaning, an intermediate image and a second image of the cleaning completed are taken. S300: Process the intermediate image and the second image in the same way as the first image, calculate the residual mass difference between adjacent cleaning cycles, arrange the residual mass difference according to the cleaning time, draw a cleaning curve, determine the optimal cleaning time according to the cleaning curve, and obtain the control parameters of the cleaning device during the optimal cleaning time. Use the control parameters to guide the cleaning device parameters in the subsequent cleaning process.

2. The optimized cleaning method of the polyurethane processing vessel cleaning device according to claim 1, characterized in that, Shooting angles include frontal view, rear view, left view, right view, top view, and bottom view of the vessel.

3. The optimized cleaning method of the polyurethane processing vessel cleaning device according to claim 1, characterized in that, Image preprocessing is performed on the first image, the intermediate image, and the second image. The preprocessing includes image filtering and image segmentation.

4. An optimized cleaning method for a polyurethane processing vessel cleaning device according to claim 1, characterized in that, In step S300, when plotting the cleaning curve, the cleaning time is used as the horizontal axis and the difference in residual mass is used as the vertical axis.

5. A polyurethane processing vessel cleaning apparatus, used to implement the optimized cleaning method according to any one of claims 1-4, characterized in that, The cleaning device includes a cleaning housing and a control housing. A cleaning chamber is formed inside the cleaning housing, and a storage basket for placing objects to be cleaned is provided inside the cleaning chamber. A heating chamber is provided between the control housing and the cleaning chamber. A heating tube and an ultrasonic transducer are provided inside the heating chamber. A control generator is provided inside the control housing to control the temperature of the heating tube and the frequency of the ultrasonic transducer. Cleaning fluid is injected into the cleaning chamber, and the heating tube is used to heat the cleaning fluid.

6. A polyurethane processing vessel cleaning device according to claim 5, characterized in that, The present invention further includes an insulation layer between the heating chamber and the control housing, a heating tube mounting hole on the insulation layer, ultrasonic transducers on both sides of the heating tube mounting hole, a push-button switch and a temperature controller on the outer surface of the control housing, and a temperature sensor inside the control housing for monitoring the temperature of the cleaning fluid.

7. A polyurethane processing vessel cleaning device according to claim 6, characterized in that, The cleaning housing has a drain port on its side, which is connected to the cleaning chamber to discharge the cleaning fluid after cleaning.

8. A polyurethane processing vessel cleaning device according to claim 1, characterized in that, The top of the cleaning housing is provided with an opening cover.

9. A polyurethane processing vessel cleaning device according to claim 1, characterized in that, The cleaning chamber is provided with side insulation layers on both sides, and the side insulation layers are connected to the insulation layer.

10. A polyurethane processing vessel cleaning device according to claim 1, characterized in that, A heating tube protection plate is provided between the cleaning chamber and the heating tube. The two ends of the heating tube protection plate are fixed to a support plate, and the support plate is located on the side of the heating chamber.

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