A system and method for detecting impurity content on the surface of PE film

Abstract

The present invention provides a system and method for detecting the impurity content on the surface of a PE film, comprising an immersion device, which is arranged on a side plate and is used to clamp the PE film and immerse it in an acid solution to remove impurities on the surface of the PE film; a cleaning device, which is arranged on one side of the side plate and is used to clean the residual impurities of the PE film after immersion in the acid solution; a temperature control device, which is arranged on one side of the cleaning device and is used to heat the acid solution to a suitable temperature; and a volume setting device, which is arranged on a base and is used to set the volume of the acid solution after immersion of the PE film to a specified range. By utilizing the immersion device and the temperature control device to accelerate the dissolution of impurities on the surface of the PE film in the acid solution, the clamping mechanism rotates the PE film to ensure comprehensive mixing, thereby improving the impurity dissolution efficiency and detection accuracy, the cleaning device removes residual impurities and inner wall acid solution, and the water spray is combined with the cleaning brush to thoroughly clean, ensuring that the detection data is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of impurity detection, and in particular to a system and method for detecting the impurity content on the surface of a PE film. Background Art

[0002] PE film, the full name of which is Polyethylene film, is a film made of polyethylene material. As an important component of modern packaging and protective materials, it is widely used in food packaging, agricultural covering, industrial protection and other fields due to its excellent flexibility, chemical resistance and good barrier properties. During the production, transportation and use of PE film, various impurities such as dust, particles, oil stains, etc. are easily attached to its surface. These impurities not only affect the appearance quality of the product, but may also have an adverse effect on the performance of the product. Traditional methods for detecting impurities on the surface of PE film mostly rely on manual experimental detection, which is not only inefficient but also easily affected by subjective factors, making it difficult to ensure the accuracy and consistency of the test results.

[0003] Chinese patent CN113916778A discloses a PVB film surface impurity detection device based on a CCD unit, including a detection box, a conveying unit and a marking unit; the conveying unit is installed inside the detection box; the marking unit includes a fixed bar, a slider, a motor support, a motor 1, a gear, a slip ring, a movable shaft and a moving assembly, two fixed bars are longitudinally arranged at the upper end of the detection box, and slide grooves are provided at the opposite ends of the fixed bar, and the slide grooves are slidably connected to the slide bars at both ends of the slider, a motor support is provided on one side of the upper end of the slider, the motor support is connected to one end of the motor 1, the output shaft of the motor 1 is connected to the gear, a vertical through hole is provided on the right side of the upper end of the slider, a slip ring is provided at the upper end of the through hole, and the slip ring is vertically slidably connected to the movable shaft, and its structural design has protective measures, will not cause damage to the PVB film during the detection process, improves the quality of the finished product, and the automatic marking method reduces labor costs and improves labor efficiency.

[0004] However, during the actual testing process, the applicant found that the balance would be unstable when the solution was weighed manually, and the environmental requirements were high. It was also necessary to weigh the standard solution for sampling and preparation when preparing the standard solution. Since the impurity content of the PE film is low and the concentration of the prepared standard solution is low, the manual operation is difficult and there are large errors in the entire process of preparing, pipetting and weighing the solution. Summary of the invention

[0005] The purpose of the present invention is to address the shortcomings of the prior art and provide a system for detecting the impurity content on the surface of a PE film. The system uses an immersion device in conjunction with a cleaning device to fully dissolve the impurities on the surface of the PE film into a solution, thereby solving the problems of difficult operation and large detection errors during the detection process.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A system for detecting impurity content on the surface of a PE film, comprising:

[0008] An immersion device, which is arranged on the side plate and is used to hold the PE film and immerse it in an acid solution to remove impurities on the surface of the PE film;

[0009] A cleaning device, which is disposed on one side of the side plate and is used to clean the residual impurities of the PE film after being soaked in acid solution;

[0010] A temperature control device, which is disposed on one side of the cleaning device and is used to heat the acid solution to a suitable temperature;

[0011] A volume setting device, which is disposed on the base and is used to set the volume of the acid solution after the PE film is soaked to a specified range;

[0012] During the testing process, the immersion device immerses the clamped PE film in the acid solution, and the impurities on the surface of the PE film will dissolve into the acid solution. The temperature control device heats the acid solution to a specified range, which can promote the reaction and reduce the immersion time. After immersion, the cleaning device is used to clean some impurities remaining on the surface of the PE film after immersion in the acid solution. The cleaned solution and the acid solution flow into the constant volume device together, and then the mixed solution is constant to the specified range by adding a little pure water.

[0013] Preferably, the immersion device comprises:

[0014] A lifting mechanism, the lifting mechanism being arranged on the top of the side plate;

[0015] The clamping mechanism is arranged on one side of the lifting mechanism.

[0016] Preferably, the lifting mechanism comprises:

[0017] A sliding rod, the sliding rod being arranged on the top of the side plate;

[0018] A top plate, on which the top end of the sliding rod is disposed;

[0019] A stepper motor, the stepper motor is installed on the top of the top plate;

[0020] A screw rod, one end of which is drivingly connected to the output end of the stepping motor;

[0021] A sliding plate, the sliding plate is slidably connected to the sliding rod and is provided with a threaded hole that cooperates with the screw rod;

[0022] A connecting plate is arranged on one side of the sliding plate and connected to the clamping mechanism.

[0023] Preferably, the clamping mechanism comprises:

[0024] A cover plate, the cover plate being arranged on one side of the connecting plate;

[0025] A rotating motor, the rotating motor is installed on the top of the cover plate;

[0026] A main gear, the main gear being mounted on an output shaft of the rotating motor;

[0027] A slave gear, the slave gear meshing with the master gear;

[0028] A first rotating rod, the first rotating rod is inserted into the interior of the cover plate, and the top end of the first rotating rod is connected to the slave gear;

[0029] A first clamping block, wherein the first clamping block is disposed at the bottom end of the first rotating rod;

[0030] a first gear, the first gear being disposed on the first rotating rod; a second gear, the second gear being meshed with the first gear;

[0031] a second rotating rod, the second rotating rod being inserted into the interior of the cover plate and having a top end connected to the second gear;

[0032] A second clamping block, the second clamping block is arranged at the bottom end of the second rotating rod;

[0033] A fixing box, the fixing box is arranged on the top of the cover plate, and a slide groove is opened inside the fixing box, and a through groove is opened on the bottom of the fixing box and the cover plate;

[0034] A slider, wherein the slider is arranged in a slide groove inside the fixing box, and the second rotating rod is inserted into the slider;

[0035] A spring, wherein the spring is arranged at one side inside the fixing box;

[0036] A sealing sheet is arranged on the second rotating rod and is tightly attached to the bottom of the cover plate.

[0037] Preferably, the cleaning device comprises:

[0038] A placement plate, the placement plate is arranged on one side of the side plate;

[0039] A driving motor, wherein the driving motor is installed at the bottom of the placement plate;

[0040] A liquid guiding tube, one end of which is drivingly connected to the output end of the driving motor, and a water hole is provided on the liquid guiding tube;

[0041] A liquid guiding cavity, the liquid guiding cavity is arranged at the top of the liquid guiding tube and communicates with the top of the liquid guiding tube;

[0042] A gasket ring, the gasket ring is arranged on the liquid guiding cavity;

[0043] A cleaning brush, the cleaning brush is disposed at the bottom of the liquid guiding cavity and is in communication with the liquid guiding cavity;

[0044] A strip-shaped nozzle, the strip-shaped nozzle is arranged on the cleaning brush;

[0045] A liquid supply mechanism is arranged on the top of the placement plate.

[0046] Preferably, the liquid supply mechanism comprises:

[0047] A water pump, the water pump being installed on the top of the placement plate;

[0048] A liquid supply bottle, the liquid supply bottle is arranged on the top of the placement plate, and the water outlet of the liquid supply bottle is connected with the water inlet of the water pump;

[0049] A sealed connecting pipe is sleeved on the outside of the liquid guiding pipe, and the inside of the sealed connecting pipe is communicated with the water outlet of the water pump.

[0050] Preferably, the temperature control device comprises:

[0051] A support plate, the support plate is arranged on one side of the placement plate;

[0052] A support column, the support column is arranged on the top of the support plate;

[0053] A ring plate, the ring plate is arranged on the top end of the support column;

[0054] A heating pipe, wherein the heating pipe is arranged on the top of the ring plate and is arranged in a uniform ring shape;

[0055] A temperature sensor is arranged on the annular immersion bottle.

[0056] Preferably, the volume setting device comprises:

[0057] A fixing frame, the fixing frame is arranged on one side of the side plate;

[0058] A drainage rod, the drainage rod is inserted into the interior of the fixing frame;

[0059] A measuring cylinder is arranged on the base.

[0060] Preferably, the annular immersion bottle is connected to one side of the side plate via a fixing plate, a water outlet pipe is provided at the bottom of the annular immersion bottle, and a valve is provided on the water outlet pipe.

[0061] The present invention also discloses a detection method for detecting the impurity content on the surface of a PE film, which is compatible with a system for detecting the impurity content on the surface of a PE film, and comprises:

[0062] Step 1, clamping the PE film: pulling open the second clamping block, clamping the PE film between the first clamping blocks and the second clamping blocks;

[0063] Step 2: Soaking in acid solution: The PE film moves downward on the lifting mechanism, and the PE film is immersed in the acid solution in the annular immersion bottle;

[0064] Step 3: Pour out the acid solution: After the soaking is completed, open the valve, and the acid solution in the annular immersion bottle flows out into the measuring cylinder along the drainage rod;

[0065] Step 4: Cleaning the residue: After the acid solution flows out, the cleaning device sprays water to clean the residual impurities on the surface of the PE film and the inner wall of the annular immersion bottle;

[0066] Step 5. Make up the solution: The acid solution and the water used for cleaning are poured into the measuring cylinder, and then a small amount of pure water is added to make up the liquid in the measuring cylinder to the specified range.

[0067] The beneficial effects of the present invention are:

[0068] (1) The present invention immerses the PE film in an acid solution through an immersion device, cooperates with a temperature control device to accelerate the dissolution of impurities on the surface of the PE film, and the clamping mechanism can also drive the PE film to move by rotating the first clamping block and the second clamping block while clamping the PE film, so that the PE film and the acid solution are fully mixed, and the impurities on the surface of the PE film are accelerated to dissolve into the acid solution. Finally, while the PE film moves, the contact position of the PE film with the first clamping block and the second clamping block changes, so that the PE film that was originally blocked can also react with the acid solution, and the detected impurity content data is more accurate.

[0069] (2) The present invention uses a cleaning device to clean the impurities remaining on the surface of the PE film after being soaked in the acid solution, so that the detection of impurity content is more accurate. It can also clean the acid solution remaining on the inner wall of the annular immersion bottle, further increasing the accuracy of detection. Finally, while spraying water for cleaning, the cleaning brush can scrape out the liquid remaining on the inner wall of the annular immersion bottle.

[0070] In summary, the present invention has the advantages of sufficient reaction and high precision in detecting impurity content. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0072] Figure 2This is a schematic diagram of the fully closed structure of the cover plate and the annular immersion bottle of the present invention;

[0073] Figure 3 This is a schematic diagram of the structure of the cover plate and the sealing sheet of the present invention;

[0074] Figure 4 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0075] Figure 5 This is a schematic diagram of the structure of the first clamping block and the second clamping block of the present invention;

[0076] Figure 6 It is a schematic cross-sectional structure diagram of a fixing box of the present invention;

[0077] Figure 7 This is a schematic diagram of the internal structure of the annular immersion bottle of the present invention;

[0078] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0079] Fig. 9 It is a schematic diagram of the structure of the cleaning device of the present invention;

[0080] Fig.10 It is a schematic diagram of the structure of the temperature control device of the present invention;

[0081] Fig.11 This is a schematic diagram of the structure of the cleaning brush of the present invention;

[0082] Fig.12 This is a schematic diagram of the cleaning brush and strip nozzle structure of the present invention;

[0083] Fig.13 This is a schematic cross-sectional view of the structure of the annular immersion bottle of the present invention;

[0084] Fig.14 It is a schematic diagram of the structure of the liquid supply mechanism of the present invention;

[0085] Fig.15 For the present invention Fig.14 The enlarged structural diagram at B in the middle;

[0086] Fig.16 It is a process flow chart of the present invention.

[0087] In the figure:

[0088] 1. Immersion device; 11. Lifting mechanism; 111. Sliding rod; 112. Top plate; 113. Stepping motor; 114. Screw rod; 115. Sliding plate; 116. Connecting plate; 12. Clamping mechanism; 121. Cover plate; 122. Rotating motor; 123. Main gear; 124. Slave gear; 125. First rotating rod; 126. First clamping block; 127. First gear; 128. Second gear; 129. Second rotating rod; 1210. Second clamping block; 1211. Fixed box; 1212. Sliding block; 1213. Spring; 1214. Sealing sheet; 1215. PE film;

[0089] 2. Cleaning device; 21. Placement plate; 22. Drive motor; 23. Liquid guide tube; 24. Liquid guide cavity; 25. Gasket; 26. Cleaning brush; 27. Strip nozzle; 28. Liquid supply mechanism; 281. Water pump; 282. Liquid supply bottle; 283. Sealing connecting pipe;

[0090] 3. Temperature control device; 31. Support plate; 32. Support column; 33. Ring plate; 34. Heating tube; 35. Temperature sensor;

[0091] 4. Volume-fixing device; 41. Fixed frame; 42. Drainage rod; 43. Measuring cylinder;

[0092] 5. Base; 6. Side panel; 7. Fixed plate; 8. Ring-shaped immersion bottle; 81. Water outlet pipe; 82. Valve. DETAILED DESCRIPTION

[0093] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0094] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0095] Embodiment 1

[0096] like Figures 1 to 3 As shown, this embodiment provides a system for detecting the impurity content on the surface of a PE film, comprising:

[0097] An immersion device 1 is provided on the side plate 6 and is used to hold the PE film and immerse it in an acid solution to remove impurities on the surface of the PE film;

[0098] A cleaning device 2, which is disposed on one side of the side plate 6 and is used to clean the residual impurities of the PE film after being soaked in acid solution;

[0099] A temperature control device 3, which is disposed on one side of the cleaning device 2 and is used to heat the acid solution to a suitable temperature;

[0100] A volume setting device 4, which is disposed on the base 5 and is used to set the volume of the acid solution after the PE film is soaked to a specified range;

[0101] During the detection process, the immersion device 1 immerses the clamped PE film in the acid solution, and the impurities on the surface of the PE film will dissolve into the acid solution. The temperature control device 3 heats the acid solution to a specified range, which can promote the reaction and reduce the immersion time. After immersion, the cleaning device 2 is used to clean some impurities remaining on the surface of the PE film after immersion in the acid solution. The cleaned solution and the acid solution flow into the constant volume device 4 together, and then the mixed solution is constant to the specified range by adding a small amount of pure water.

[0102] It should be noted that: the number of clamped PE films is 6 pieces, the PE films are soaked in the acid solution for about an hour, the temperature control device 3 heats the acid solution to between 60 and 70 degrees, the acid solution added to the annular immersion bottle 8 is approximately between 10ml and 20ml, and the cleaning water used to clean the residual impurities on the surface of the PE film after soaking in the acid solution is approximately between 10ml and 15ml. When the volume is constant, the mixed solution of the acid solution and the cleaning water will be constant to the range of 25ml to 35ml. The impurity content detection formula is, impurity content (ug) = equipment detection value (ug / ml) * constant volume value (ml).

[0103] like Figures 1 to 6 As shown, the immersion device 1 comprises:

[0104] A lifting mechanism 11, wherein the lifting mechanism 11 is disposed on the top of the side plate 6;

[0105] The clamping mechanism 12 is arranged at one side of the lifting mechanism 11 .

[0106] Wherein, the lifting mechanism 11 comprises:

[0107] A sliding rod 111, wherein the sliding rod 111 is disposed on the top of the side plate 6;

[0108] A top plate 112, where the top plate 112 is provided with the top end of the sliding rod 111;

[0109] A stepper motor 113, wherein the stepper motor 113 is installed on the top of the top plate 112;

[0110] A screw rod 114, one end of which is drivingly connected to the output end of the stepping motor 113;

[0111] A sliding plate 115, wherein the sliding plate 115 is slidably connected to the sliding rod 111 and has a threaded hole that cooperates with the screw rod 114;

[0112] The connecting plate 116 is disposed on one side of the sliding plate 115 and connected to the clamping mechanism 12 .

[0113] Wherein, the clamping mechanism 12 comprises:

[0114] A cover plate 121, wherein the cover plate 121 is disposed on one side of the connecting plate 116;

[0115] A rotating motor 122, wherein the rotating motor 122 is installed on the top of the cover plate 121;

[0116] A main gear 123, wherein the main gear 123 is mounted on the output shaft of the rotating motor 122;

[0117] A slave gear 124, the slave gear 124 is gear-engaged with the master gear 123;

[0118] A first rotating rod 125, wherein the first rotating rod 125 is inserted into the interior of the cover plate 121 and a top end of the first rotating rod 125 is connected to the slave gear 124;

[0119] A first clamping block 126, wherein the first clamping block 126 is disposed at the bottom end of the first rotating rod 125;

[0120] A first gear 127, wherein the first gear 127 is disposed on the first rotating rod 125; a second gear 128, wherein the second gear 128 is gear-engaged with the first gear 127;

[0121] a second rotating rod 129, wherein the second rotating rod 129 is inserted into the interior of the cover plate 121, and a top end of the second rotating rod 129 is connected to the second gear 128;

[0122] A second clamping block 1210, wherein the second clamping block 1210 is disposed at the bottom end of the second rotating rod 129;

[0123] A fixing box 1211, which is disposed on the top of the cover plate 121 and has a slide groove therein, and a through groove is formed on the bottom of the fixing box 1211 and the cover plate 121;

[0124] A slider 1212, wherein the slider 1212 is disposed in a slide groove inside the fixing box 1211, and the second rotating rod 129 is inserted into the slider 1212;

[0125] A spring 1213, wherein the spring 1213 is disposed at one side of the fixing box 1211;

[0126] The sealing sheet 1214 is disposed on the second rotating rod 129 and is tightly attached to the bottom of the cover plate 121 .

[0127] It should be noted that: the height of the side plate 6 is slightly lower than the height of the annular immersion bottle 8, the protrusion at the bottom of the cover plate 121 is just in close contact with the top of the annular immersion bottle 8, ensuring that the acid solution will not evaporate, the first gear 127 and the second gear 128 are gears with the same module and number of teeth, thereby ensuring that the first clamping block 126 and the second clamping block 1210 drive the PE film 1215 to move at the same speed, and the sealing sheet 1214 is in close contact with the bottom of the cover plate 121 to prevent the water vapor volatilized by the acid solution from escaping from the cover plate 121. The second clamping block 1210 passes through the through groove between the fixing box 1211, and the slider 1212 set in the internal slide groove of the fixing box 1211 allows the second clamping block 1210 to be separated from the first clamping block 126 so as to clamp the PE film 1215, and then the slider 1212 is squeezed by the spring 1213, so that the first clamping block 126 and the second clamping block 1210 can tightly clamp the PE film 1215, and the top and bottom of the first clamping block 126 and the second clamping block 1210 are both arc-shaped to facilitate the flow of the adhering acid solution.

[0128] In detail: the lifting mechanism 11 drives the screw rod 114 to rotate through the stepping motor 113, driving the clamping mechanism 12 connected to the sliding plate 115 to move up and down. The main functions of the lifting mechanism 11 are, first, to drive the clamping mechanism 12 to move downward so that the PE film 1215 can be immersed in the acid solution; second, after the immersion is completed, cooperate with the cleaning device 2 to continuously clean the impurities remaining on the surface of the PE film 1215 during the process of the PE film 1215 moving upward.

[0129] The clamping mechanism 12 is powered by a rotating motor 122 to drive the main gear 123 to rotate, thereby driving the plurality of slave gears 124 to rotate in the same direction. The second clamping block 1210 is driven by the first gear 127 and the second gear 128. The second clamping block 1210 rotates in the opposite direction to the first clamping block 126 to ensure that the PE film 1215 can move between the first clamping block 126 and the second clamping block 1210. The slider 1212 drives the second rotating rod 12 9 Slide in the slide groove inside the fixed box 1211, so that the second clamping block 1210 can be pulled open, and the PE film 1215 can be easily clamped between the first clamping block 126 and the second clamping block 1210. Secondly, the spring 1213 inside the fixed box 1211 squeezes the slider 1212 to one end, and pressure is generated between the first clamping block 126 and the second clamping block 1210 to ensure that the PE film 1215 is stably clamped between the first clamping block 126 and the second clamping block 1210. The clamping mechanism 12 has the following main functions: first, the PE film 1215 is stably clamped between the first clamping block 126 and the second clamping block 1210; second, the simultaneous rotation of the first clamping block 126 and the second clamping block 1210 will drive the PE film 1215 to move in the acid solution, so that the PE film 1215 and the acid solution are fully mixed, thereby accelerating the dissolution rate of impurities; third, as the PE film 1215 moves, the contact position between the PE film 1215 and the first clamping block 126 and the second clamping block 1210 changes, and impurities at the contact position before the movement can also be dissolved in the acid solution, thereby improving the accuracy of detection.

[0130] like Figure 7 and Fig.10 As shown, the temperature control device 3 includes:

[0131] A support plate 31, wherein the support plate 31 is disposed on one side of the placement plate 21;

[0132] A support column 32, wherein the support column 32 is disposed on the top of the support plate 31;

[0133] A ring plate 33, wherein the ring plate 33 is disposed at the top of the support column 32;

[0134] The heating tubes 34 are arranged on the top of the ring plate 33 and are arranged in a uniform ring shape;

[0135] The temperature sensor 35 is arranged on the annular immersion bottle 8 .

[0136] It should be noted that: by arranging the heating tubes 34 in a ring shape, the temperature distribution of the acid solution is made more uniform, and the temperature sensor 35 is used to control the stability of the acid solution within a specified range, thereby increasing the reaction rate and reducing the immersion time of the PE film.

[0137] like Figures 7 and 8 As shown, the constant volume device 4 includes:

[0138] A fixing frame 41, wherein the fixing frame 41 is disposed on one side of the side plate 6;

[0139] A drainage rod 42, wherein the drainage rod 42 is inserted into the interior of the fixing frame 41;

[0140] The measuring cylinder 43 is disposed on the base 5 .

[0141] In detail, the acid solution after soaking the PE film and the cleaning water for cleaning the residual impurities of the PE film are drained into the measuring cylinder 43 through the drainage rod 42, and then an appropriate amount of pure water is added to the measuring cylinder 43 to adjust the volume of the liquid in the measuring cylinder 43 to a specified range, so as to subsequently detect the impurity content of the liquid in the measuring cylinder 43.

[0142] like Figure 1 and Figures 7 and 8 As shown, the annular immersion bottle 8 is connected to one side of the side plate 6 through a fixing plate 7 , a water outlet pipe 81 is provided at the bottom of the annular immersion bottle 8 , and a valve 82 is provided on the water outlet pipe 81 .

[0143] It should be noted that the annular immersion bottle 8 is designed to be annular, and is wide at the top and narrow at the bottom, firstly to fully immerse the PE film in the acid solution, and secondly to cooperate with the clamping mechanism 12 to drive the PE film 1215 to move, cooperate with the temperature control device 3 to clean the PE film 1215 and scrape off the residual liquid on the inner wall of the annular immersion bottle 8. The top of the inner ring of the annular immersion bottle 8 is lower than the top of the outer ring, so as to place the gasket 25 to ensure the sealing of the annular immersion bottle 8. By opening the valve 82, the acid solution and the cleaning water flow into the measuring cylinder 43 along the drainage rod 42 for constant volume.

[0144] Embodiment 2

[0145] like Figures 9 to 15 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0146] The cleaning device 2 comprises:

[0147] A placement plate 21, wherein the placement plate 21 is disposed on one side of the side plate 6;

[0148] A driving motor 22, wherein the driving motor 22 is installed at the bottom of the placement plate 21;

[0149] A liquid guide tube 23, one end of which is drivingly connected to the output end of the drive motor 22, and a water hole is provided on the liquid guide tube 23;

[0150] A liquid guiding cavity 24, wherein the liquid guiding cavity 24 is disposed at the top of the liquid guiding tube 23 and communicates with the top of the liquid guiding tube 23;

[0151] A gasket 25, wherein the gasket 25 is disposed on the liquid guiding cavity 24;

[0152] a cleaning brush 26, the cleaning brush 26 being disposed at the bottom of the liquid guiding cavity 24 and being in communication with the liquid guiding cavity 24;

[0153] A strip-shaped nozzle 27, wherein the strip-shaped nozzle 27 is disposed on the cleaning brush 26;

[0154] The liquid supply mechanism 28 is disposed on the top of the placement plate 21 .

[0155] Wherein, the liquid supply mechanism 28 comprises:

[0156] A water pump 281, wherein the water pump 281 is installed on the top of the placement plate 21;

[0157] A liquid supply bottle 282, wherein the liquid supply bottle 282 is disposed on the top of the placement plate 21, and a water outlet of the liquid supply bottle 282 is connected to a water inlet of the water pump 281;

[0158] The sealed connecting pipe 283 is sleeved on the outer side of the liquid guiding pipe 23 , and the interior of the sealed connecting pipe 283 is communicated with the water outlet of the water pump 281 .

[0159] It should be noted that the gasket 25 is used to ensure the sealing of the annular immersion bottle 8 while the cleaning brush 26 can rotate. Rubber sealing rings are provided on the top and bottom of the sealing connecting tube 283 to ensure the sealing of the liquid guide tube 23 during rotation. A plurality of strip nozzles 27 are provided on the cleaning brush 26, which are respectively provided on the inner sides of the two symmetrical ends of the cleaning brush 26 to clean the PE film. In addition, a plurality of strip nozzles 27 are provided on one side where the surface normal is along the tangent direction of the inner wall of the annular immersion bottle 8 to clean the acid remaining on the inner wall surface of the annular immersion bottle 8.

[0160] In detail: the water pump 281 draws cleaning water from the liquid supply bottle 282 and transports it to the sealed connecting pipe 283. The cleaning water enters the liquid guide tube 23 through the through hole inside the liquid guide tube 23, and then enters the internal cavity of the cleaning brush 26 through the liquid guide cavity 24. Finally, the cleaning water is sprayed out through the strip nozzle 27 on the cleaning brush 26 to clean the impurities remaining on the surface of the PE film 1215 and the acid remaining on the inner wall of the annular immersion bottle 8. The driving motor 22 drives the liquid guide tube 23 to rotate, thereby driving the cleaning brush 26 to rotate inside the annular immersion bottle 8 to complete the cleaning work. The main functions of the temperature control device 3 are as follows: first, it is used to clean the impurities remaining on the surface of the PE film after being soaked in the acid solution, so that the impurities are dissolved in the cleaning water and then flow out to the measuring cylinder 43 to mix with the acid solution; second, when the cleaning brush 26 rotates, the residual acid on the inner wall of the annular immersion bottle 8 is cleaned to mix the acid with the cleaning water; third, the residual liquid on the inner wall of the annular immersion bottle 8 can be scraped out by the rotating cleaning brush 26 to ensure that there is no liquid residue, thereby improving the accuracy of the detection.

[0161] Embodiment 3

[0162] like Fig.16 As shown, this embodiment provides a detection method for detecting the impurity content on the surface of a PE film, comprising the following steps:

[0163] Step 1, clamping the PE film: pull open the second clamping block 1210, and clamp the PE film between the plurality of first clamping blocks 126 and the second clamping blocks 1210;

[0164] Step 2: Soaking in acid solution: The PE film moves downward on the lifting mechanism 11, and the PE film is immersed in the acid solution in the annular immersion bottle 8;

[0165] Step 3, pour out the acid solution: After the soaking is completed, open the valve 82, and the acid solution in the annular immersion bottle 8 flows out along the drainage rod 42 into the measuring cylinder 43;

[0166] Step 4: cleaning residues: After the acid solution flows out, the cleaning device 2 sprays water to clean the residual impurities on the surface of the PE film and the inner wall of the annular immersion bottle 8;

[0167] Step 5: Fixing the volume of the solution: The acid solution and the water used for cleaning flow into the measuring cylinder 43, and then a small amount of pure water is added to fix the volume of the liquid in the measuring cylinder 43 to a specified range.

[0168] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for detecting the impurity content on the surface of a PE film, characterized in that: include: An immersion device, which is arranged on the side plate and is used to hold the PE film and immerse it in an acid solution to remove impurities on the surface of the PE film; A cleaning device, which is disposed on one side of the side plate and is used to clean the residual impurities of the PE film after being soaked in acid solution; A temperature control device, which is disposed on one side of the cleaning device and is used to heat the acid solution to a suitable temperature; A volume setting device, which is disposed on the base and is used to set the volume of the acid solution after the PE film is soaked to a specified range; During the testing process, the immersion device immerses the clamped PE film in the acid solution, and the impurities on the surface of the PE film will dissolve into the acid solution. The temperature control device heats the acid solution to a specified range, which can promote the reaction and reduce the immersion time. After immersion, the cleaning device is used to clean some impurities remaining on the surface of the PE film after immersion in the acid solution. The cleaned solution and the acid solution flow together into the constant volume device, and then a small amount of pure water is added to constant the volume of the mixed solution to a specified range. The immersion device comprises: A lifting mechanism, the lifting mechanism being arranged on the top of the side plate; A clamping mechanism, wherein the clamping mechanism is arranged on one side of the lifting mechanism; The lifting mechanism comprises: A sliding rod, the sliding rod being arranged on the top of the side plate; A top plate, on which the top end of the sliding rod is disposed; A stepper motor, the stepper motor is installed on the top of the top plate; A screw rod, one end of which is drivingly connected to the output end of the stepping motor; A sliding plate, the sliding plate is slidably connected to the sliding rod and is provided with a threaded hole that cooperates with the screw rod; A connecting plate, the connecting plate is arranged on one side of the sliding plate and connected to the clamping mechanism; The clamping mechanism comprises: A cover plate, the cover plate being arranged on one side of the connecting plate; A rotating motor, the rotating motor is installed on the top of the cover plate; A main gear, the main gear being mounted on an output shaft of the rotating motor; A slave gear, the slave gear meshing with the master gear; A first rotating rod, the first rotating rod is inserted into the interior of the cover plate, and the top end of the first rotating rod is connected to the slave gear; A first clamping block, wherein the first clamping block is disposed at the bottom end of the first rotating rod; a first gear, the first gear being disposed on the first rotating rod; a second gear, the second gear being meshed with the first gear; a second rotating rod, the second rotating rod being inserted into the interior of the cover plate and having a top end connected to the second gear; A second clamping block, the second clamping block is arranged at the bottom end of the second rotating rod; A fixing box, the fixing box is arranged on the top of the cover plate, and a slide groove is opened inside the fixing box, and a through groove is opened on the bottom of the fixing box and the cover plate; A slider, wherein the slider is arranged in a slide groove inside the fixing box, and the second rotating rod is inserted into the slider; A spring, wherein the spring is arranged at one side inside the fixing box; A sealing sheet, which is disposed on the second rotating rod and is closely attached to the bottom of the cover plate; The cleaning device comprises: A placement plate, the placement plate is arranged on one side of the side plate; A driving motor, wherein the driving motor is installed at the bottom of the placement plate; A liquid guiding tube, one end of which is drivingly connected to the output end of the driving motor, and a water hole is provided on the liquid guiding tube; A liquid guiding cavity, the liquid guiding cavity is arranged at the top of the liquid guiding tube and communicates with the top of the liquid guiding tube; A gasket ring, the gasket ring is arranged on the liquid guiding cavity; A cleaning brush, the cleaning brush is disposed at the bottom of the liquid guiding cavity and is in communication with the liquid guiding cavity; A strip-shaped nozzle, the strip-shaped nozzle is arranged on the cleaning brush; A liquid supply mechanism, the liquid supply mechanism is arranged on the top of the placement plate; The liquid supply mechanism comprises: A water pump, the water pump being installed on the top of the placement plate; A liquid supply bottle, the liquid supply bottle is arranged on the top of the placement plate, and the water outlet of the liquid supply bottle is connected with the water inlet of the water pump; A sealed connecting pipe, wherein the sealed connecting pipe is sleeved on the outside of the liquid guiding pipe, and the inside of the sealed connecting pipe is in conduction with the water outlet of the water pump; The temperature control device comprises: A support plate, the support plate is arranged on one side of the placement plate; A support column, the support column is arranged on the top of the support plate; A ring plate, the ring plate is arranged on the top end of the support column; A heating pipe, wherein the heating pipe is arranged on the top of the ring plate and is arranged in a uniform ring shape; A temperature sensor, wherein the temperature sensor is arranged on the annular immersion bottle; The annular immersion bottle is connected to one side of the side plate through a fixing plate, a water outlet pipe is arranged at the bottom of the annular immersion bottle, a valve is arranged on the water outlet pipe, and the annular immersion bottle is used to contain the acid solution and to soak the PE film.

2. A system for detecting impurity content on the surface of a PE film according to claim 1, characterized in that: The constant volume device comprises: A fixing frame, the fixing frame is arranged on one side of the side plate; A drainage rod, the drainage rod is inserted into the interior of the fixing frame; A measuring cylinder is arranged on the base.

3. The detection method of a system for detecting the impurity content on the surface of a PE film according to claim 2, characterized in that: The following steps are involved: Step 1, clamping the PE film: pulling open the second clamping block, clamping the PE film between the first clamping blocks and the second clamping blocks; Step 2: Soaking in acid solution: The PE film moves downward on the lifting mechanism, and the PE film is immersed in the acid solution in the annular immersion bottle; Step 3: Pour out the acid solution: After the soaking is completed, open the valve, and the acid solution in the annular immersion bottle flows out into the measuring cylinder along the drainage rod; Step 4: Cleaning the residue: After the acid solution flows out, the cleaning device sprays water to clean the residual impurities on the surface of the PE film and the inner wall of the annular immersion bottle; Step 5. Make up the solution: The acid solution and the water used for cleaning are poured into the measuring cylinder, and then a small amount of pure water is added to make up the liquid in the measuring cylinder to the specified range.

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