Device and method for cleaning polyethylene volumetric flask

Abstract

The invention relates to the field of polyethylene volumetric flask cleaning equipment, and discloses a polyethylene volumetric flask cleaning device which comprises a workbench, a sleeve is movably mounted in the middle of the top end of the workbench, a rotating rod is movably mounted in the sleeve, and four transverse frames are fixedly mounted at the top end of the rotating rod; the bottom of the tail end of the transverse frame is movably provided with a rotary drum, the interior of the rotary drum is movably provided with a magnetic lifting rod, the outer diameter of the lower side of the rotary drum is movably provided with three clamping arms, the tail end of each clamping arm is fixedly provided with a clamping block, and the front side of the top end of the workbench is fixedly provided with a first arc-shaped supporting plate. A water tank is fixedly installed in the middle of the inner side end of the first arc-shaped supporting plate, and a second arc-shaped supporting plate is fixedly installed on the rear side of the top end of the workbench. Feeding, cleaning, drying and discharging can be automatically completed, all-directional cleaning is achieved, clamping is reliable, drying is energy-saving, the working height can be adjusted, and high efficiency and practicability are achieved.

Description

Technical Field

[0001] The present invention relates to the field of cleaning equipment for polyethylene volumetric flasks, and specifically to a device and method for cleaning polyethylene volumetric flasks. Background Art

[0002] In the experimental and production processes of many industries such as scientific research, chemical engineering, pharmaceuticals, and food and beverage, polyethylene volumetric flasks, as a commonly used experimental instrument, are widely used for the preparation, storage, and transfer of solutions. Due to its material having stable chemical properties and being not easily reactive with most chemical substances, especially in the process of element determination, it avoids the interference of some metal ions that may be released or adsorbed by glass volumetric flasks to the target element, maintains the purity of the background, and has advantages such as good transparency, which can meet the requirements of experiments. However, precisely because of its frequent use in various experimental and production links, the work of cleaning polyethylene volumetric flasks has become an indispensable and extremely important daily task.

[0003] The traditional cleaning method for polyethylene volumetric flasks mainly relies on manual operation. Operators usually use a brush dipped in a cleaning agent to manually scrub the inner and outer walls of the volumetric flask, and then rinse it with a large amount of clean water. This cleaning method has many obvious defects. On the one hand, the manual cleaning efficiency is extremely low. The speed of manual scrubbing is limited. Especially when faced with a large number of volumetric flasks that need to be cleaned, operators need to spend a lot of time and energy, seriously affecting the work progress and being difficult to meet the requirements of high efficiency in modern scientific research and industrial production. On the other hand, the cleaning effect is difficult to guarantee. Due to the limitations of manual operation, it is difficult to ensure that every corner of the volumetric flask can be thoroughly cleaned during the scrubbing process, and it is easy to leave impurities, stains, or uncleaned reagents on the bottle wall, especially at the bottom and corners. These residual substances may interfere with subsequent experiments or production using the volumetric flask, affecting the accuracy of experimental data and the quality of products.

[0004] In order to improve the cleaning efficiency, some units have tried to use some simple mechanical auxiliary equipment, such as installing a stirring device in a water tank to drive the volumetric flask to rotate, and spraying water through a nozzle for cleaning at the same time. However, this method still has deficiencies. The stirring device cannot effectively clean the volumetric flask in all directions and at multiple angles, and some parts are still difficult to clean thoroughly. Moreover, such simple equipment cannot achieve an integrated process from cleaning to drying. The cleaned volumetric flask still needs to be manually processed for drying, which not only increases the operation steps but also easily causes secondary pollution during the transfer process. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a device and method for cleaning a polyethylene volumetric flask, which solves the problems of low cleaning efficiency and poor cleaning effect of traditional polyethylene volumetric flasks, realizes automatic cleaning and drying, can thoroughly clean the bottle body in all directions, is energy-saving and environment-friendly, and can also flexibly adjust the working height to improve the applicability of the device.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A device for cleaning a polyethylene volumetric flask, including a workbench, in the middle of the top end of the workbench, a sleeve is movably installed, inside the sleeve, a rotating rod is movably installed, at the top end of the rotating rod, four cross frames are fixedly installed, at the bottom ends of the ends of the cross frames, rotating cylinders are movably installed, inside the rotating cylinders, magnetic lifting rods are movably installed, on the outer diameters of the lower sides of the rotating cylinders, three clamping arms are movably installed, at the ends of the clamping arms, clamping blocks are fixedly installed, at the front side of the top end of the workbench, a first arc-shaped support plate is fixedly installed, in the middle of the inner side end of the first arc-shaped support plate, a water tank is fixedly installed, at the rear side of the top end of the workbench, a second arc-shaped support plate is fixedly installed, at the position between the first arc-shaped support plate and the second arc-shaped support plate on the top end of the workbench, a fixed cylinder is fixedly installed, at the top end of the fixed cylinder, a first cleaning groove is opened, inside the first cleaning groove, a first short shaft is movably installed, at the top end of the first short shaft, a first cross-shaped brush plate is fixedly installed, on the outer side wall of the fixed cylinder, several second cleaning grooves are opened, inside the second cleaning grooves, second short shafts are movably installed, at the outer ends of the second short shafts, second cross-shaped brush plates are fixedly installed, at the rear side of the upper surface of the workbench, an electric heating rod is fixedly installed.

[0007] Preferably, key grooves are opened on both sides of the inner wall of the sleeve, on both sides of the middle part of the rotating rod, splines are fixedly installed and the outer ends of the splines are movably arranged inside the corresponding side key grooves, at one side of the top end of the workbench, a first motor is fixedly installed, at the driving end of the first motor, a first driving bevel gear is fixedly installed, on the outer diameter of the sleeve, a first driven bevel gear is fixedly installed and the outer diameters of the first driven bevel gear and the first driving bevel gear are meshed and connected.

[0008] Preferably, electromagnetic rings are fixedly installed on the inner side walls of the rotating cylinders, at the bottom ends of the magnetic lifting rods, movable blocks are fixedly installed, on the outer walls of the movable blocks, three connecting rods are movably installed and the ends of the connecting rods are movably installed inside the corresponding side clamping arms.

[0009] Preferably, a first arc-shaped rack plate is fixedly installed on the upper side of the inner end of the first arc-shaped support plate. An opening is formed at the top of the water tank. A multi-pass pipe is fixedly installed on the outer side of the first arc-shaped support plate. A plurality of first branch pipes are fixedly installed inside the multi-pass pipe. The ends of the first branch pipes all extend into the interior of the water tank and are fixedly installed with high-pressure spray nozzles. A second arc-shaped rack plate is fixedly installed on the upper side of the inner end of the second arc-shaped support plate. An electric heating plate is fixedly installed in the middle of the inner end of the second arc-shaped support plate. Transmission gears are fixedly installed on the outer diameter of the upper side of the rotating cylinder.

[0010] Preferably, the bottom end of the first short shaft extends into the interior of the fixed cylinder and is fixedly installed with a second driving bevel gear. The inner ends of the second short shafts all extend into the interior of the fixed cylinder and are fixedly installed with second driven bevel gears. The inner ends of the second driven bevel gears are all meshed and connected to the outer side of the second driving bevel gear. A second motor is fixedly installed at the inner bottom of the fixed cylinder, and the driving end of the second motor is fixedly installed in the middle of the second driving bevel gear.

[0011] Preferably, an annular water pipe is also fixedly installed inside the fixed cylinder. The top end of the annular water pipe is fixedly provided with a plurality of second branch pipes, and the ends of the second branch pipes respectively extend into the interior of the first cleaning tank and all the second cleaning tanks. A water inlet pipe is fixedly installed on one side of the annular water pipe, and the end of the water inlet pipe extends to the outside of the fixed cylinder. An inlet pipe is fixedly installed on the outer side of the multi-pass pipe, and the end of the water inlet pipe extends into the interior of the inlet pipe.

[0012] Preferably, lifting cylinders are fixedly installed on both sides below the workbench. The driving ends of the lifting cylinders are respectively fixedly installed on both sides of the U-shaped frame. The bottom end of the rotating rod is movably installed in the middle of the U-shaped frame. A feeding conveyor belt is fixedly installed on the front side of the workbench. An output conveyor belt is fixedly installed on one side of the workbench. Support legs are fixedly installed at the four corners of the bottom end of the workbench.

[0013] A method for cleaning a polyethylene volumetric flask includes the following steps:

[0014] Step 1: Invert the polyethylene volumetric flasks to be cleaned one by one and place them on the feeding conveyor belt, and transport them to the end of the feeding conveyor belt by the feeding conveyor belt;

[0015] Step 2: Control the U-shaped frame, the rotating rod and the cross frame through the lifting cylinder, drive the rotating cylinder to descend, start the electromagnetic ring in the rotating cylinder, cooperate with the magnetic lifting rod and the movable block, drive the clamping arms and the clamping blocks to tighten inward, clamp the volumetric flask, and then the lifting cylinder controls the volumetric flask to rise and reset;

[0016] Step 3: Start the first motor. Cooperating with the first driving bevel gear, the first driven bevel gear and the sleeve, drive the rotating rod and all the cross frames to rotate, transport the volumetric flask to the inner side of the first arc-shaped support plate, drive the rotating cylinder and the volumetric flask to rotate by using the transmission gear and the first arc-shaped rack plate, introduce cleaning water through the water inlet pipe, and spray it out through the multi-way pipe, the first branch pipe and the high-pressure nozzle to clean the outer wall of the rotating volumetric flask;

[0017] Step 3: Continue to control the rotation of the rotating rod. When the volumetric flask moves above the fixed cylinder, the lifting cylinder controls it to descend, so that the fixed cylinder enters the volumetric flask. Start the second motor. Cooperating with the second driving bevel gear and the second driven bevel gear, drive the first short shaft and all the second short shafts to rotate, thereby driving the first cross-shaped brush plate and all the second cross-shaped brush plates to rotate at high speed. At the same time, the cleaning water of the water inlet pipe enters the first cleaning tank and the second cleaning tank through the water guiding pipe, the annular water pipe and the second branch pipe. Use the first cross-shaped brush plate and all the second cross-shaped brush plates rotating at high speed to disperse the cleaning water, and form a high-speed water vapor fluid after mixing with air to wash the inner wall of the volumetric flask. After completion, the volumetric flask rises and resets;

[0018] Step 4: Continue to control the rotation of the rotating rod to make it move to the inner side of the second arc-shaped support plate. Drive the rotating cylinder and the volumetric flask to rotate by using the transmission gear and the second arc-shaped rack plate, and turn on the electric heating plate to dry the outer wall of the volumetric flask;

[0019] Step 5: Continue to control the rotation of the rotating rod to make it move above the electric heating rod. The lifting cylinder controls it to descend, so that the electric heating rod enters the volumetric flask, and turn on the electric heating rod to dry the inside of the bottle. After completion, it rises and resets;

[0020] Step 6: Continue to control the rotation of the rotating rod to make it move above the discharge conveyor belt. The lifting cylinder controls it to descend. At the same time, the electromagnetic ring is powered off and the clamping arm is loosened, and the cleaned volumetric flask is placed on the surface of the discharge conveyor belt and transported out.

[0021] The present invention provides a device and method for cleaning a polyethylene volumetric flask. It has the following beneficial effects:

[0022] 1. Through the coordinated operation of the feeding conveyor belt, the lifting cylinder, the motor drive and a series of transmission structures, the present invention realizes the full-automatic process of the polyethylene volumetric flask from feeding, cleaning, drying to discharging. There is no need for frequent manual operation, which greatly improves the cleaning efficiency and can meet the needs of batch cleaning. It is especially suitable for places such as laboratories and factories that require a large number of volumetric flasks to be cleaned.

[0023] 2. During the cleaning process of the present invention, the volumetric flask not only rotates integrally with the rotating rod and the rotating cylinder, but also realizes its own additional rotation at specific positions through meshing with the arc-shaped rack plate. This compound rotation mode, combined with the water spraying and cleaning of the outer wall of the flask by the high-pressure nozzle, and the brushing of the bottom wall and the inner wall side of the flask by the first cross-brush plate and the second cross-brush plate inside to disperse the cleaning water into a high-speed water vapor fluid, can ensure that every part of the volumetric flask can be thoroughly and effectively cleaned, guaranteeing the comprehensiveness of the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the present invention;

[0025] Figure 2 is a side perspective view of the present invention;

[0026] Figure 3 is Figure 2 an enlarged view of part A in

[0027] Figure 4 is a schematic diagram of the internal structure of the rotating cylinder in the present invention;

[0028] Figure 5 is a schematic diagram of the structure of the fixed cylinder in the present invention;

[0029] Figure 6 is a schematic diagram of the internal structure of the fixed cylinder in the present invention;

[0030] Figure 7 is a bottom perspective view of the present invention.

[0031] Among them, 1. Workbench; 2. Sleeve; 3. Rotating rod; 4. Keyway; 5. Spline; 6. First motor; 7. First driving bevel gear; 8. First driven bevel gear; 9. Cross frame; 10. Rotating cylinder; 11. Magnetic lifting rod; 12. Electromagnetic ring; 13. Movable block; 14. Clamping arm; 15. Clamping block; 16. Connecting rod; 17. First arc-shaped support plate; 18. First arc-shaped rack plate; 19. Water tank; 20. Opening; 21. Multi-pass pipe; 22. First branch pipe; 23. High-pressure nozzle; 24. Second arc-shaped support plate; 25. Second arc-shaped rack plate; 26. Electric heating plate; 27. Fixed cylinder; 28. First cleaning tank; 29. First short shaft; 30. First cross-brush plate; 31. Second driving bevel gear; 32. Second cleaning tank; 33. Second short shaft; 34. Second cross-brush plate; 35. Second driven bevel gear; 36. Second motor; 37. Annular water pipe; 38. Second branch pipe; 39. Water inlet pipe; 40. Water inlet pipe; 41. Transmission gear; 42. Electric heating rod; 43. Lifting cylinder; 44. U-shaped frame; 45. Feeding conveyor belt; 46. Discharging conveyor belt; 47. Support leg. DETAILED DESCRIPTION OF THE INVENTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment:

[0034] Please refer to the attached Figure 1 - attached Figure 7 , the embodiment of the present invention provides a device for cleaning a polyethylene volumetric flask, such as Figure 1As shown in the figure, it includes a workbench 1. The workbench 1 serves as the basic support structure of the entire device, providing a platform for the installation and operation of other components. In the middle of its top, a sleeve 2 is movably installed. The sleeve 2 can rotate flexibly around its own axis, providing support for the installation and rotation of the rotating rod 3. Inside the sleeve 2, a rotating rod 3 is movably installed. The rotating rod 3 can rotate stably inside the sleeve 2 by means of the key grooves 4 opened on both sides of the inner wall of the sleeve 2 and the splines 5 fixedly installed on both sides of its middle part. The outer ends of the splines 5 are movably arranged inside the corresponding key grooves 4 on both sides, ensuring the stability and accuracy of the rotation of the rotating rod 3. At the top of the rotating rod 3, four cross frames 9 are fixedly installed. The cross frames 9 are radially distributed and are used to carry the rotating cylinder 10, so that the rotating cylinder 10 can be movably installed at the bottom of its end. At the bottom of the ends of the cross frames 9, rotating cylinders 10 are movably installed. The rotating cylinder 10 can not only rotate itself, but also a magnetic lifting rod 11 is installed inside it, providing a power source for the clamping mechanism of the volumetric flask. Inside the rotating cylinders 10, magnetic lifting rods 11 are movably installed. The magnetic lifting rods 11 can move up and down inside the rotating cylinders 10 due to the magnetic force generated by the electromagnetic rings 12. At the bottom end of the magnetic lifting rods 11, movable blocks 13 are fixedly installed. The movable blocks 13 are used to connect the connecting rods 16, and then control the opening and closing of the clamping arms 14. On the outer diameter of the lower side of the rotating cylinders 10, three clamping arms 14 are movably installed. The clamping arms 14 are circumferentially distributed with the rotating cylinder 10 as the center. When the movable block 13 moves driven by the magnetic lifting rod 11, the clamping arms 14 can change the opening and closing state under the action of the connecting rod 16. At the ends of the clamping arms 14, clamping blocks 15 are fixedly installed. The clamping blocks 15 are used to directly clamp the polyethylene volumetric flask, ensuring that the volumetric flask is stable and does not fall off during the cleaning process. At the front side of the top of the workbench 1, a first arc-shaped support plate 17 is fixedly installed. The first arc-shaped support plate 17 provides installation support for the subsequent cleaning structure. In the middle of its inner end, a water tank 19 is fixedly installed. The water tank 19 is used to store cleaning water and provide a water source for the high-pressure spray head 23. At the rear side of the top of the workbench 1, a second arc-shaped support plate 24 is fixedly installed. The second arc-shaped support plate 24 is mainly used to cooperate with the drying structure and provide an installation position for the electric heating plate 26, etc. At the position between the first arc-shaped support plate 17 and the second arc-shaped support plate 24 on the top of the workbench 1, a fixed cylinder 27 is fixedly installed. The fixed cylinder 27 is the core carrier of the internal cleaning structure. At its top, a first cleaning groove 28 is opened. The first cleaning groove 28 is used to accommodate the first short shaft 29, so that the first short shaft 29 can rotate flexibly therein. Inside the first cleaning groove 28, the first short shaft 29 is movably installed. The first short shaft 29 rotates driven by the second driving bevel gear 31, and then drives the first cross brush plate 30 fixedly installed at the top to rotate, realizing the brushing of the inner bottom surface of the volumetric flask. At the top of the first short shaft 29, a first cross brush plate 30 is fixedly installed. When the first cross brush plate 30 rotates, it can disperse the cleaning water entering the first cleaning groove 28 and efficiently clean the bottom wall of the volumetric flask. On the outer side wall of the fixed cylinder 27, a number of second cleaning grooves 32 are opened. The second cleaning grooves 32 are used to install the second short shafts 33, and the second short shafts 33 can rotate therein.To drive the second cross-brush plate 34 to brush the inner side wall of the volumetric flask, a second short shaft 33 is movably installed inside the second cleaning tank 32. Driven by the second driven bevel gear 35, the second short shaft 33 drives the second cross-brush plate 34 fixedly installed at the outer end to rotate at high speed, achieving effective cleaning of the inner side of the volumetric flask. Second cross-brush plates 34 are fixedly installed at the outer ends of the second short shaft 33. The second cross-brush plates 34 work together with the first cross-brush plate 30 to clean the inside of the volumetric flask in all directions. An electric heating rod 42 is fixedly installed at the rear side of the upper surface of the workbench 1. The electric heating rod 42 is used to dry the inside of the volumetric flask entering above it at an appropriate working stage.

[0035] In this embodiment, key grooves 4 are provided on both sides of the inner wall of the sleeve 2. Splines 5 are fixedly installed on both sides of the middle of the rotating rod 3, and the outer ends of the splines 5 are movably arranged inside the corresponding key grooves 4 on each side. This mating structure of the spline and the key groove ensures that when the rotating rod 3 rotates in the sleeve 2, it can not only stably transmit torque but also ensure the accuracy of rotation. A first motor 6 is fixedly installed at one side of the top end of the workbench 1. The first motor 6 is one of the power sources for the rotating part of the entire device. A first driving bevel gear 7 is fixedly installed at its driving end. Driven by the first motor 6, the first driving bevel gear 7 rotates at high speed, and then drives the meshing first driven bevel gear 8 to rotate. The first driven bevel gear 8 is fixedly installed on the outer diameter of the sleeve 2, and the outer diameters of the first driven bevel gear 8 and the first driving bevel gear 7 are meshed and connected. Through this meshing transmission of the bevel gears, the power of the first motor 6 is transmitted to the sleeve 2, driving the sleeve 2 to rotate, and then driving the rotating rod 3 and all the components installed on the rotating rod 3 to rotate.

[0036] Furthermore, electromagnetic rings 12 are fixedly installed on the inner side walls of the rotating cylinder 10. After the electromagnetic rings 12 are energized, they will generate a strong magnetic field to attract the magnetic lifting rods 11 to move up and down. At the bottom ends of the magnetic lifting rods 11, movable blocks 13 are fixedly installed. Driven by the magnetic lifting rods 11, the movable blocks 13 can move up and down inside the rotating cylinder 10 to control the movement of the connecting rods 16 in this way. Three connecting rods 16 are movably installed on the outer walls of the movable blocks 13, and the ends of the connecting rods 16 are movably installed inside the inner sides of the corresponding clamping arms 14. When the movable blocks 13 move upward, the connecting rods 16 will pull the clamping arms 14 to tighten inward, thus clamping the volumetric flask; when the movable blocks 13 move downward, the clamping arms 14 will loosen the volumetric flask under their own gravity and the action of other structures, realizing flexible and reliable clamping control.

[0037] Further, a first arc-shaped rack plate 18 is fixedly installed on the upper side of the inner end of the first arc-shaped support plate 17. When the transmission gear 41 on the rotary drum 10 moves inside the first arc-shaped support plate 17, it will engage with the first arc-shaped rack plate 18 for meshing transmission, driving the rotary drum 10 and the volumetric flask clamped on the rotary drum 10 to perform additional self-rotation, enhancing the cleaning effect. An opening 20 is provided at the top of the water tank 19. The opening 20 is used to allow the cleaning water to enter the water tank 19 and also facilitates the high-pressure nozzle 23 to spray the water in the water tank 19. A multi-pass pipe 21 is fixedly installed on the outside of the first arc-shaped support plate 17. The multi-pass pipe 21 functions to split the cleaning water. A plurality of first branch pipes 22 are fixedly installed on its inner side. The first branch pipes 22 respectively introduce the cleaning water in the multi-pass pipe 21 into the inside of the water tank 19. The ends of the first branch pipes 22 all extend into the inside of the water tank 19 and are fixedly installed with high-pressure nozzles 23. The high-pressure nozzles 23 spray the cleaning water in the water tank 19 in the form of high-pressure jet onto the outer wall of the rotating volumetric flask, realizing the strong cleaning of the outer wall of the volumetric flask. A second arc-shaped rack plate 25 is fixedly installed on the upper side of the inner end of the second arc-shaped support plate 24. When the rotary drum 10 moves to the inside of the second arc-shaped support plate 24, the transmission gear 41 meshes with the second arc-shaped rack plate 25, driving the rotary drum 10 and the volumetric flask to rotate, cooperating with the electric heating plate 26 to dry the outer wall of the volumetric flask. An electric heating plate 26 is fixedly installed in the middle of the inner end of the second arc-shaped support plate 24. When the electric heating plate 26 is working, it dries the outer wall of the rotating volumetric flask, removing the residual moisture on the outer wall. Transmission gears 41 are fixedly installed on the outer diameters on the upper side of the rotary drum 10. During the operation of the entire device, the transmission gears 41 respectively mesh with the first arc-shaped rack plate 18 and the second arc-shaped rack plate 25, realizing the additional rotation of the rotary drum 10 and the volumetric flask at different positions, improving the cleaning and drying effects.

[0038] Further, the bottom end of the first short shaft 29 extends into the inside of the fixed cylinder 27 and is fixedly installed with a second driving bevel gear 31. The second driving bevel gear 31 rotates under the drive of the second motor 36, thereby driving the second driven bevel gear 35 meshing with it to rotate. The inner ends of the second short shafts 33 all extend into the inside of the fixed cylinder 27 and are fixedly installed with second driven bevel gears 35. The inner ends of the second driven bevel gears 35 are all meshed and connected with the outer side of the second driving bevel gear 31. Through this meshing transmission of bevel gears, the power of the second motor 36 is transmitted to the second short shafts 33, enabling the second short shafts 33 to drive the second cross-shaped brush plates 34 to rotate. A second motor 36 is fixedly installed at the inner bottom of the fixed cylinder 27 and the driving end of the second motor 36 is fixedly installed in the middle of the second driving bevel gear 31. The second motor 36 serves as the power source of the internal cleaning structure, providing stable power for the rotation of the first short shaft 29 and the second short shafts 33, ensuring that the first cross-shaped brush plate 30 and the second cross-shaped brush plates 34 can rotate at high speed and efficiently clean the inside of the volumetric flask.

[0039] Further, an annular water pipe 37 is fixedly installed inside the fixing cylinder 27. The annular water pipe 37 is used to store the cleaning water introduced from the water inlet pipe 40 and conveyed through the water guiding pipe 39, providing water sources for the first cleaning tank 28 and the second cleaning tanks 32. A number of second branch pipes 38 are fixedly arranged at the top end of the annular water pipe 37, and the ends of the second branch pipes 38 respectively extend into the first cleaning tank 28 and the interiors of all the second cleaning tanks 32. The second branch pipes 38 introduce the cleaning water in the annular water pipe 37 into the first cleaning tank 28 and the second cleaning tanks 32 respectively, enabling the cleaning water to form a high-speed water-vapor fluid inside the volumetric flask under the action of the first cross-brush plate 30 and the second cross-brush plate 34. A water guiding pipe 39 is fixedly installed on one side of the annular water pipe 37, and the end of the water guiding pipe 39 extends to the outside of the fixing cylinder 27. The water guiding pipe 39 introduces a part of the cleaning water in the water inlet pipe 40 into the annular water pipe 37, realizing the reasonable distribution of the cleaning water. A water inlet pipe 40 is fixedly installed on the outer side of the multi-way pipe 21. The water inlet pipe 40 provides the cleaning water source for the entire cleaning device. The cleaning water enters the multi-way pipe 21 and the annular water pipe 37 through the water inlet pipe 40, ensuring the continuous progress of the cleaning work. The end of the water guiding pipe 39 extends into the interior of the water inlet pipe 40, realizing the conveying connection of the cleaning water from the water inlet pipe 40 to the annular water pipe 37.

[0040] Further, lifting cylinders 43 are fixedly installed on both sides under the workbench 1. The lifting cylinders 43 are key components for adjusting the height of the device and can flexibly control the height of the rotating rod 3 and the volumetric flask clamped thereon according to actual needs. The driving ends of the lifting cylinders 43 are respectively fixedly installed on both sides of the U-shaped frame 44. The U-shaped frame 44 is used to carry the rotating rod 3. When the lifting cylinders 43 work, by driving the U-shaped frame 44 to move up and down, the rotating rod 3 and related components are driven to lift and lower. The bottom end of the rotating rod 3 is movably installed in the middle of the U-shaped frame 44, ensuring that the rotating rod 3 can stably lift and lower under the drive of the U-shaped frame 44 while not hindering its own rotation. A feeding conveyor belt 45 is fixedly installed on the front side of the workbench 1. The feeding conveyor belt 45 is used to transport the polyethylene volumetric flasks to be cleaned one by one to the working area of the device, realizing automatic feeding. An output conveyor belt 46 is fixedly installed on one side of the workbench 1. The output conveyor belt 46 is used to receive the cleaned and dried volumetric flasks and transport them out of the device, completing the discharging work of the entire cleaning process. Support legs 47 are fixedly installed at the four corners of the bottom end of the workbench 1. The support legs 47 are used to stably support the workbench 1, ensuring the stability of the entire device during operation.

[0041] A method for cleaning a polyethylene volumetric flask, characterized by comprising the following steps:

[0042] Step 1: Invert and place the polyethylene volumetric flasks to be cleaned one by one on the feeding conveyor belt 45, and transport them to the end of the feeding conveyor belt 45 by the feeding conveyor belt 45;

[0043] Step 2: Control the U-shaped frame 44, the rotating rod 3 and the cross frame 9 through the lifting cylinder 43 to drive the rotating cylinder 10 to descend. Start the electromagnetic ring 12 in the rotating cylinder 10, cooperate with the magnetic lifting rod 11 and the movable block 13 to drive the clamping arms 14 and the clamping blocks 15 to tighten inward, clamp the volumetric flask, and then the lifting cylinder 43 controls the volumetric flask to rise and reset;

[0044] Step 3: Start the first motor 6, cooperate with the first driving bevel gear 7, the first driven bevel gear 8 and the sleeve 2 to drive the rotating rod 3 and all the cross frames 9 to rotate, transport the volumetric flask to the inner side of the first arc-shaped support plate 17, and drive the rotating cylinder 10 and the volumetric flask to rotate by using the transmission gear 41 and the first arc-shaped rack plate 18. Introduce cleaning water through the water inlet pipe 40, and spray it through the multi-way pipe 21, the first branch pipe 22 and the high-pressure nozzle 23 to clean the outer wall of the rotating volumetric flask;

[0045] Step 3: Continue to control the rotation of the rotating rod 3. When the volumetric flask moves above the fixed cylinder 27, the lifting cylinder 43 controls it to descend, so that the fixed cylinder 27 enters the inside of the volumetric flask. Start the second motor 36, cooperate with the second driving bevel gear 31 and the second driven bevel gear 35 to drive the first short shaft 29 and all the second short shafts 33 to rotate, thereby driving the first cross brush plate 30 and all the second cross brush plates 34 to rotate at high speed. At the same time, the cleaning water of the water inlet pipe 40 enters the first cleaning tank 28 and the second cleaning tank 32 through the water guiding pipe 39, the annular water pipe 37 and the second branch pipe 38. Use the first cross brush plate 30 and all the second cross brush plates 34 rotating at high speed to disperse the cleaning water, and form a high-speed water-vapor fluid after mixing with air to wash the inner wall of the volumetric flask. After completion, the volumetric flask rises and resets;

[0046] Step 4: Continue to control the rotation of the rotating rod 3 to make it move to the inner side of the second arc-shaped support plate 24, drive the rotating cylinder 10 and the volumetric flask to rotate by using the transmission gear 41 and the second arc-shaped rack plate 25, and turn on the electric heating plate 26 to dry the outer wall of the volumetric flask;

[0047] Step 5: Continue to control the rotation of the rotating rod 3 to make it move above the electric heating rod 42. The lifting cylinder 43 controls it to descend, so that the electric heating rod 42 enters the inside of the volumetric flask, turn on the electric heating rod 42 to dry the inside of the bottle body, and then rise and reset after completion;

[0048] Step 6: Continue to control the rotation of the rotating rod 3 to make it move above the discharge conveyor belt 46. The lifting cylinder 43 controls it to descend. At the same time, the electromagnetic ring 12 is powered off, and the clamping arms 14 are loosened, and the cleaned volumetric flask is placed on the surface of the discharge conveyor belt 46 and transported out.

[0049] Working principle: The polyethylene volumetric flasks to be cleaned are placed upside down one by one on the feeding conveyor belt 45. Start the feeding conveyor belt 45, and the feeding conveyor belt 45 runs at a stable speed to transport the volumetric flasks to the end. After reaching the end, start the lifting cylinder 43. The lifting cylinder 43 controls the U-shaped frame 44 to descend. The descent of the U-shaped frame 44 drives the rotating rod 3 and the cross frame 9 to descend, thereby driving all the rotating cylinders 10 to descend. Subsequently, start the electromagnetic ring 12. After the electromagnetic ring 12 is powered on, it generates a strong magnetic field to attract the magnetic lifting rod 11 to move upward. The magnetic lifting drives the movable block 13 to move upward, and then drives one end of all the connecting rods 16 to rise. The other end of the connecting rod 16 will pull the clamping arm 14 inward, thereby driving all the clamping arms 14 and the clamping blocks 15 to tighten inward to clamp the volumetric flask. Subsequently, the lifting cylinder 43 controls the volumetric flask to rise and reset. After completion, start the first motor 6. The first motor 6 drives the first driving bevel gear 7 to rotate. The first driving bevel gear 7 drives the first driven bevel gear 8 and the sleeve 2 to rotate. The rotating sleeve 2 uses the cooperation of the spline 5 and the keyway 4 to drive the rotating rod 3 and all the cross frames 9 to rotate, thereby driving the clamped volumetric flask to rotate to the inside of the first arc-shaped support plate 17. When the volumetric flask moves inside the first arc-shaped support plate 17, the transmission gear 41 will engage with the first arc-shaped rack plate 18 for transmission, driving the rotating cylinder 10 to rotate, thereby driving the volumetric flask to rotate itself. At this time, cleaning water is introduced through the water inlet pipe 40. The cleaning water is sprayed out by the high-pressure nozzles 23 through the multi-way pipe 21 and the first branch pipe 22. The high-pressure nozzles 23 spray the cleaning water in the form of high-pressure jets to strongly clean the outer wall of the rotating volumetric flask. Subsequently, continue to control the rotating rod 3 to rotate. When the volumetric flask moves above the fixed cylinder 27, the lifting cylinder 43 controls it to descend so that the fixed cylinder 27 enters the inside of the volumetric flask. Start the second motor 36. The second motor 36 drives the second driving bevel gear 31 to rotate. The second driving bevel gear 31 drives all the second driven bevel gears 35 to rotate, thereby driving the first short shaft 29 and all the second short shafts 33 to rotate, and then driving the first cross brush plate 30 and all the second cross brush plates 34 to rotate at high speed. At the same time, a part of the clean water introduced through the water inlet pipe 40 will enter the annular water pipe 37 through the water diversion pipe 39, and then enter the first cleaning tank 28 and the second cleaning tank 32 through the second branch pipe 38. The high-speed rotating first cross brush plate 30 and all the second cross brush plates 34 patter the cleaning water into fine water droplets and mix with air to form a high-speed water vapor fluid to efficiently brush the bottom wall and the inner wall side of the volumetric flask. After the cleaning is completed, the lifting cylinder 43 controls the volumetric flask to rise and reset again. After completion, continue to control the rotating rod 3 to rotate so that it moves to the inside of the second arc-shaped support plate 24. The transmission gear 41 and the second arc-shaped rack plate 25 are used to drive the rotating cylinder 10 and the volumetric flask to rotate. Turn on the electric heating plate 26. The electric heating plate 26 works to generate heat to dry the outer wall of the volumetric flask. Subsequently, continue to control the rotating rod 3 to rotate so that the volumetric flask moves above the electric heating rod 42. The lifting cylinder 43 controls it to descend so that the electric heating rod 42 enters the inside of the volumetric flask. Turn on the electric heating rod 42,The electric heating rod 42 operates to dry the inside of the bottle body. After completion, it rises and resets. Finally, the rotation of the rotating rod 3 is continuously controlled to move it above the discharge conveyor belt 46. The lifting cylinder 43 controls it to descend. At the same time, the electromagnetic ring 12 is powered off, and the clamping arm 14 is released under its own gravity and the action of related structures. The washed volumetric flask is placed on the surface of the discharge conveyor belt 46 and transported out.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for cleaning a polyethylene volumetric flask, comprising a workbench (1), characterized in that, A sleeve (2) is movably installed in the middle of the top end of the workbench (1). A rotating rod (3) is movably installed inside the sleeve (2). Four cross frames (9) are fixedly installed at the top end of the rotating rod (3). Rotating cylinders (10) are movably installed at the bottom ends of the cross frames (9). Magnetic lifting rods (11) are movably installed inside the rotating cylinders (10). Three clamping arms (14) are movably installed on the outer diameters of the lower sides of the rotating cylinders (10). Clamping blocks (15) are fixedly installed at the ends of the clamping arms (14). A first arc-shaped support plate (17) is fixedly installed on the front side of the top end of the workbench (1). A water tank (19) is fixedly installed in the middle of the inner side end of the first arc-shaped support plate (17). A second arc-shaped support plate (24) is fixedly installed on the rear side of the top end of the workbench (1). A fixed cylinder (27) is fixedly installed at the position between the first arc-shaped support plate (17) and the second arc-shaped support plate (24) on the top end of the workbench (1). A first cleaning groove (28) is opened at the top end of the fixed cylinder (27). A first short shaft (29) is movably installed inside the first cleaning groove (28). A first cross brush plate (30) is fixedly installed at the top end of the first short shaft (29). A plurality of second cleaning grooves (32) are opened on the outer side wall of the fixed cylinder (27). Second short shafts (33) are movably installed inside the second cleaning grooves (32). Second cross brush plates (34) are fixedly installed at the outer ends of the second short shafts (33). An electric heating rod (42) is fixedly installed on the rear side of the upper surface of the workbench (1).

2. The device for cleaning a polyethylene volumetric flask according to claim 1, characterized in that, Key grooves (4) are opened on both sides of the inner wall of the sleeve (2). Splines (5) are fixedly installed on both sides of the middle of the rotating rod (3), and the outer ends of the splines (5) are movably arranged inside the corresponding key grooves (4). A first motor (6) is fixedly installed on one side of the top end of the workbench (1). A first driving bevel gear (7) is fixedly installed at the driving end of the first motor (6). A first driven bevel gear (8) is fixedly installed on the outer diameter of the sleeve (2), and the outer diameters of the first driven bevel gear (8) and the first driving bevel gear (7) are meshed and connected to each other.

3. The device for cleaning a polyethylene volumetric flask according to claim 1, characterized in that, Electromagnetic rings (12) are fixedly installed on the inner side walls of the rotating cylinders (10). Movable blocks (13) are fixedly installed at the bottom ends of the magnetic lifting rods (11). Three connecting rods (16) are movably installed on the outer walls of the movable blocks (13), and the ends of the connecting rods (16) are movably installed inside the inner sides of the corresponding clamping arms (14).

4. The device for cleaning a polyethylene volumetric flask according to claim 1, characterized in that, On the upper side of the inner end of the first arc-shaped support plate (17), a first arc-shaped rack plate (18) is fixedly installed. An opening (20) is formed at the top of the water tank (19). On the outside of the first arc-shaped support plate (17), a multi-pass pipe (21) is fixedly installed. Inside the multi-pass pipe (21), a number of first branch pipes (22) are fixedly installed. The ends of the first branch pipes (22) all extend into the interior of the water tank (19) and high-pressure spray nozzles (23) are fixedly installed at the ends. On the upper side of the inner end of the second arc-shaped support plate (24), a second arc-shaped rack plate (25) is fixedly installed. In the middle of the inner end of the second arc-shaped support plate (24), an electric heating plate (26) is fixedly installed. On the outer diameter of the upper side of the rotating cylinder (10), transmission gears (41) are fixedly installed.

5. The device for cleaning a polyethylene volumetric flask according to claim 4, characterized in that, The bottom end of the first short shaft (29) extends into the interior of the fixed cylinder (27) and a second driving bevel gear (31) is fixedly installed. The inner ends of the second short shafts (33) all extend into the interior of the fixed cylinder (27) and second driven bevel gears (35) are fixedly installed. The inner ends of the second driven bevel gears (35) are all meshed with the outer side of the second driving bevel gear (31). On the inner bottom of the fixed cylinder (27), a second motor (36) is fixedly installed and the driving end of the second motor (36) is fixedly installed in the middle of the second driving bevel gear (31).

6. The device for cleaning a polyethylene volumetric flask according to claim 5, characterized in that, An annular water pipe (37) is also fixedly installed inside the fixed cylinder (27). At the top end of the annular water pipe (37), a number of second branch pipes (38) are fixedly arranged and the ends of the second branch pipes (38) respectively extend into the interior of the first cleaning tank (28) and all the second cleaning tanks (32). On one side of the annular water pipe (37), a water inlet pipe (39) is fixedly installed and the end of the water inlet pipe (39) extends to the outside of the fixed cylinder (27). On the outside of the multi-pass pipe (21), a water inlet pipe (40) is fixedly installed. The end of the water inlet pipe (39) extends into the interior of the water inlet pipe (40).

7. The device for cleaning a polyethylene volumetric flask according to claim 1, characterized in that, On both sides below the workbench (1), lifting cylinders (43) are fixedly installed. The driving ends of the lifting cylinders (43) are respectively fixedly installed on both sides of the U-shaped frame (44). The bottom end of the rotating rod (3) is movably installed in the middle of the U-shaped frame (44). On the front side of the workbench (1), a feeding conveyor belt (45) is fixedly installed. On one side of the workbench (1), a discharging conveyor belt (46) is fixedly installed. At the four corners of the bottom end of the workbench (1), support legs (47) are fixedly installed.

8. A method for cleaning a polyethylene volumetric flask according to any one of claims 1-7, characterized in that, It includes the following steps: Step 1: Invert and place the polyethylene volumetric flasks to be cleaned one by one on the feeding conveyor belt (45), and transport them to the end by the feeding conveyor belt (45). Step 2: Control the U-shaped frame (44), the rotating rod (3) and the cross frame (9) through the lifting cylinder (43), drive the rotating cylinder (10) to descend, start the electromagnetic ring (12) inside the rotating cylinder (10), cooperate with the magnetic lifting rod (11) and the movable block (13), drive the clamping arms (14) and the clamping blocks (15) to tighten inward, clamp the volumetric flask, and then the lifting cylinder (43) controls the volumetric flask to rise and reset. Step 3: Start the first motor (6). Cooperating with the first driving bevel gear (7), the first driven bevel gear (8) and the sleeve (2), drive the rotating rod (3) and all the cross frames (9) to rotate, transport the volumetric flask to the inside of the first arc-shaped support plate (17), drive the rotating cylinder (10) and the volumetric flask to rotate by using the transmission gear (41) and the first arc-shaped rack plate (18), introduce cleaning water through the water inlet pipe (40), and spray it out through the multi-way pipe (21), the first branch pipe (22) and the high-pressure nozzle (23) to clean the outer wall of the rotating volumetric flask; Step 3: Continue to control the rotation of the rotating rod (3). When the volumetric flask moves above the fixed cylinder (27), the lifting cylinder (43) controls it to descend, so that the fixed cylinder (27) enters the inside of the volumetric flask. Start the second motor (36). Cooperating with the second driving bevel gear (31) and the second driven bevel gear (35), drive the first short shaft (29) and all the second short shafts (33) to rotate, thereby driving the first cross brush plate (30) and all the second cross brush plates (34) to rotate at high speed. At the same time, the cleaning water in the water inlet pipe (40) enters the first cleaning tank (28) and the second cleaning tank (32) through the water guiding pipe (39), the annular water pipe (37) and the second branch pipe (38). Use the first cross brush plate (30) and all the second cross brush plates (34) rotating at high speed to disperse the cleaning water, and form a high-speed water-vapor fluid after mixing with air to rinse the inner wall of the volumetric flask. After completion, the volumetric flask rises and resets; Step 4: Continue to control the rotation of the rotating rod (3) to make it move to the inside of the second arc-shaped support plate (24). Drive the rotating cylinder (10) and the volumetric flask to rotate by using the transmission gear (41) and the second arc-shaped rack plate (25), and turn on the electric heating plate (26) to dry the outer wall of the volumetric flask; Step 5: Continue to control the rotation of the rotating rod (3) to make it move above the electric heating rod (42). The lifting cylinder (43) controls it to descend, so that the electric heating rod (42) enters the inside of the volumetric flask, and turn on the electric heating rod (42) to dry the inside of the bottle body. After completion, it rises and resets; Step 6: Continue to control the rotation of the rotating rod (3) to make it move above the discharge conveyor belt (46). The lifting cylinder (43) controls it to descend. At the same time, the electromagnetic ring (12) is powered off and the clamping arm (14) is loosened, and the cleaned volumetric flask is placed on the surface of the discharge conveyor belt (46) and transported out.

Images