A flow-through device for pH detection

Abstract

The present application relates to a pH value automatic detection process technology, in particular to a flow transfer device for pH value detection, which comprises a flask transfer device, a beaker transfer device and a liquid taking device, the flask transfer device comprises a flask circulating conveying device, a reciprocating moving assembly, a flask plug transfer assembly and a flask cleaning device, the flask circulating conveying device is a conveying chain, a conveying belt, a conveying chain plate or a turntable, the reciprocating moving assembly comprises a reciprocating moving part, a reciprocating driving part and a reciprocating guiding part, the flask is fixed on the reciprocating moving part of the reciprocating moving assembly, the flask plug transfer assembly comprises a flask plug taking device, a flask plug conveying device and a flask plug placing device, the beaker transfer device comprises a beaker circulating conveying device and a beaker cleaning device, and the liquid taking device takes out the extraction liquid in the flask on the flask transfer device and injects it into the beaker on the beaker transfer device, and the flow transfer device for pH value detection is convenient for realizing the automation of the pH value detection process.

Description

Technical Field

[0001] This invention relates to an automated pH detection process technology, specifically a flow device for pH detection, comprising a flask turnover device, a beaker turnover device, and a liquid extraction device. The flask turnover device includes a flask circulation conveyor, a reciprocating moving component, a flask stopper turnover component, and a flask cleaning device. The flask circulation conveyor is a conveyor chain, conveyor belt, conveyor chain plate, or turntable. The reciprocating moving component includes a reciprocating moving part, a reciprocating driving part, and a reciprocating guiding part. The flask is fixed on the reciprocating moving part of the reciprocating moving component. The flask stopper turnover component includes a stopper removal device, a stopper conveying device, and a stopper placement device. The beaker turnover device includes a beaker circulation conveying device and a beaker cleaning device. The liquid extraction device extracts the extract from the flask on the flask on the flask turnover device and injects it into the beaker on the beaker turnover device. Using this flow device for pH detection facilitates the automation of the pH detection process. Background Technology

[0002] The determination of pH value of water extracts from textiles is a mandatory test item. The number of samples tested is huge, and the test process is long. It requires cutting textiles into 5mm side pieces to prepare three 2g parallel samples. The parallel samples are placed in a stoppered flask, 100mL of water or potassium chloride solution is added, the stopper is tightened, and the sample is shaken thoroughly to ensure complete immersion. The flask is then placed on a mechanical shaker and shaken for 2 hours. The extract is then removed and placed in a beaker to test the pH value. After the test, the flask and beaker need to be cleaned, dried, and reused. This test involves the use, transfer, and cleaning of materials such as beakers, flasks, and extracts. The process is complicated and takes up a lot of space in actual work, which not only makes the work inconvenient but also hinders the full automation of pH value testing.

[0003] In view of the above problems, the present invention discloses a transfer device for pH value detection. The transfer device for pH value detection of the present invention installs beakers and flasks onto a circulating conveying device for recycling, cleaning and drying, and realizes mechanical vibration of the sample in the flask during the process. The technical solution of the present invention not only helps to shorten the material transfer process during pH value detection, reduce the material transfer links, improve the material transfer efficiency, and reduce the floor space, but also helps to realize the full automation of pH value detection. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical problem this invention aims to solve is to provide a flow device for pH value detection. The solution is: a flow device for pH value detection, characterized in that it comprises a flask turnover device, a beaker turnover device, and a liquid collection device.

[0005] The flask turnover device includes a flask circulation conveying device, a reciprocating moving component, a flask stopper turnover component, and a flask cleaning device;

[0006] The flask circulation conveying device includes flask conveying components that move in a circular motion. The flask circulation conveying device is preferably a conveyor chain, conveyor belt, conveyor chain plate, or turntable.

[0007] The reciprocating moving assembly includes a reciprocating moving component, a reciprocating driving component, and a reciprocating guiding component. The reciprocating moving component is directly or indirectly mounted on the flask conveying component of the flask circulation conveying device through the reciprocating guiding component. The flask is mounted on the reciprocating moving component of the reciprocating moving assembly.

[0008] A reciprocating drive component (motor plus cam or linkage mechanism) mounted on the frame of the flask circulation conveyor drives the reciprocating moving component to move back and forth in a direction perpendicular to the conveying direction of the flask circulation conveyor. A reciprocating guide device mounted on the frame of the flask circulation conveyor guides the reciprocating motion of the reciprocating drive component.

[0009] The flask stopper turnover assembly includes a flask stopper picking device, a flask stopper conveying device, and a flask stopper placing device. The flask stopper turnover assembly is installed on the frame of the flask circulation conveying device. The flask stopper picking device is located at the end of the conveying direction of the flask circulation conveying device. After removing the flask stopper from the flask mouth, it is placed on the flask stopper conveying device. The conveying direction of the flask stopper conveying device is opposite to that of the flask circulation conveying device, and the conveying length of the flask stopper conveying device is shorter than that of the flask circulation conveying device. The flask stopper placing device, located near the beginning of the conveying direction of the flask circulation conveying device, places the flask stopper on the flask stopper conveying device into the flask mouth.

[0010] For the section of the flask conveying device where the flask mouth is plumb and pointing upwards, the conveying direction from the beginning to the end passes sequentially the following positions: adding textile fragments to the flask, adding liquid to the flask, capping the flask, multiple reciprocating oscillation positions, opening the flask cap, and taking liquid from the flask.

[0011] The flask cleaning device includes a flask rinsing nozzle and a flask rinsing nozzle lifting device for driving the flask rinsing nozzle to rise and fall. After the flask rinsing nozzle rises, it enters the flask and after it falls, it exits the flask without obstructing the movement of the flask.

[0012] The flask turnover device includes a flask drying device located below the flask circulation conveyor and a flask watering tank for holding liquids and textile fragments poured out of the flasks. The flask drying device uses hot air nozzles inserted into the flasks for drying or a drying chamber with inlets and outlets surrounding the flasks for drying. The flask drying device using hot air nozzles includes hot air nozzles and a hot air nozzle drive component that drives the hot air nozzles to move up and down. The hot air nozzles are mounted on the frame of the flask circulation conveyor via the hot air nozzle drive component. The hot air nozzle drive component drives the hot air nozzles to insert into the flasks and blow hot air to dry the flasks. The hot air nozzles do not obstruct the movement of the flasks after they descend. The drying chamber with inlets and outlets is a drying chamber-like structure located below the flask circulation conveyor along the length of the flask circulation conveyor, which surrounds the flasks and has openings at both ends or movable openings at both ends.

[0013] The beaker turnover device includes a beaker circulation conveying device and a beaker cleaning device.

[0014] The beaker circulation conveying device includes a circulating beaker conveying component. The beaker circulation conveying device is preferably a conveyor chain, conveyor belt, or conveyor chain plate. The beaker is mounted on the moving conveying component (preferably a conveyor chain, conveyor belt, or conveyor chain plate) of the beaker circulation conveying device.

[0015] The beaker cleaning device is installed on the frame of the beaker circulation conveying device. The beaker cleaning device includes a beaker rinsing nozzle and a beaker rinsing nozzle lifting device for driving the beaker rinsing nozzle to rise and fall. After the beaker rinsing nozzle rises, it enters the beaker. After the beaker rinsing nozzle falls, it exits the beaker without hindering the movement of the beaker.

[0016] The beaker turnover device includes a beaker drying device located below the beaker circulation conveying device and a beaker water spray tank for holding the liquid poured out of the beaker. Similar to the flask drying turnover, the beaker drying device uses hot air nozzles inserted into the beaker to blow air for drying or a drying room with an inlet and outlet that surrounds the beaker for drying.

[0017] The beaker turnover device includes a sample retention device, which is a component with a container for holding the extract located above the beaker conveying device. The sample retention device is preferably located above the beaker conveying device to reduce the floor space occupied, but it is not excluded that the sample retention device can be placed in other locations, such as next to the beaker circulation conveying device.

[0018] The liquid taking device is installed on the frame of the flask circulation conveying device or the beaker circulation conveying device. The liquid taking device includes a liquid taking component for transferring liquid in the flask and a liquid taking drive guide component. The liquid taking component is installed on the frame of the flask circulation conveying device or the beaker circulation conveying device through the liquid taking drive guide component. The liquid taking device uses the liquid taking component to take the extract from the flask on the flask turnover device and then injects it into the beaker on the beaker turnover device. The liquid taking device takes liquid from the flask with the plumb bob facing upward at the end of the stroke in the conveying direction of the flask circulation conveying device, and injects the extract taken from the flask into the beaker at the beginning of the stroke in the conveying direction of the beaker circulation conveying device.

[0019] When using the aforementioned flow device for pH detection, multiple sets of flasks are placed on the flask circulation conveyor. Given a fixed shaking time, the more flask sets, the faster the flask circulation conveyor can transport the flasks. The flask circulation conveyor moves one flask position at a time. At the starting point of the conveying direction, the flask mouth is rotated to the position where the plumb bob is pointing upwards. Textile scraps are then placed into the flask. The test solution (water or potassium chloride solution) is added to the flask. The flask stopper delivery device places the stopper from the flask into the mouth of the flask after the solution has been added. The position where the test solution is added to the flask is called the solution addition position. The position at the mouth of the flask is called the capping position. The capping position and the liquid filling position can be the same position, or the capping position can be at least one position behind the liquid filling position in the conveying direction. The flask conveying device moves the flask with liquid added and the flask stopper capped to the end of the conveying direction. The liquid taking device removes the flask stopper at the end of the conveying direction of the flask circulation conveying device, at the position where the flask mouth is plumb and pointing upwards, and places it on the flask stopper conveying device to be conveyed to the starting conveying position of the flask circulation conveying device. The flask stopper can be reused. After the extract in the flask is extracted, it is injected into the beaker at the starting end of the conveying direction of the beaker rotation device, which rotates to the position where the plumb is pointing upwards.

[0020] Adding textile fragments and solution to a flask can be done on a flask circulation conveyor. Alternatively, the textile fragments can be placed inside the flask at this position, the liquid can be added, and the flask can be shaken thoroughly before being placed on the flask circulation conveyor. In this case, the flask is fixed to the reciprocating moving part of the reciprocating moving component by elastic clips, making it easy for a robot or a person to remove and install the flask.

[0021] The reciprocating drive component of the reciprocating moving assembly drives the reciprocating moving component of the flask between the capping position and the liquid dispensing position to reciprocate. The vibration frequency and amplitude of the reciprocating moving component driving the reciprocating moving component to drive the beaker to reciprocate are determined according to the testing standards. Generally, the reciprocating vibration frequency is not less than 60 times / minute and the vibration amplitude is not less than 20mm.

[0022] Before the liquid taking device takes liquid, the flask stopper taking device removes the flask stopper from the flask mouth at the liquid taking position or the working position before the liquid taking position and places it on the flask stopper conveying device. The flask stopper conveying device conveys the flask stopper to the capping position. After the liquid is added, the flask stopper placing device places the flask stopper on the flask stopper conveying device into the flask mouth of the flask at the capping position.

[0023] The flask rinsing nozzles below the flask turnover device spray water upwards to rinse the inside of the flasks. After rinsing, the flasks continue to move to the next workstation. The hot air nozzles of the flask drying device below the flask circulation conveyor blow hot air into the flasks, or the area through which the washed flasks pass can be enclosed into an oven structure with inlets and outlets to dry the flasks. The flask water trough below the flask turnover device is used to collect liquids poured out of the flasks and textile debris. The flask water trough is equipped with a filter screen to filter textile debris and fibers.

[0024] The beaker circulation conveyor transports the beaker containing the extract to be tested to the testing position for pH value detection. The preferred testing position is the second station after the beaker opening turns upward at the beginning of the conveying stroke on the beaker circulation conveyor. The first station is used to put the extract into the beaker, and the second station is used to detect the pH value. If the pH value is abnormal, the extract of the abnormal group can be extracted into the sample retention container above the beaker circulation conveyor for manual re-inspection. After the beaker moves to the end of the beaker circulation conveyor, it is flipped downward, with the beaker opening downward at the bottom of the beaker circulation conveyor. The beaker rinsing nozzle of the beaker cleaning device cleans the beaker, and the beaker drying device below the beaker circulation conveyor dries the beaker. The beaker passes through the beaker cleaning device and then the beaker drying device below the beaker circulation conveyor. The beaker water tank below the beaker circulation conveyor collects the liquid poured out of the beaker.

[0025] Both beaker and flask cleaning devices are equipped with at least one set of rinsing nozzles. Each set of rinsing nozzles uses both tap water and distilled water for rinsing at different times. Alternatively, multiple rinsing nozzle stations can be configured, each used for rinsing with tap water and distilled water respectively. These stations can also have stations for rinsing the exterior and interior. For example, the first rinsing station can be for rinsing the exterior with tap water, the second station for rinsing the interior with tap water, the third station for rinsing the exterior with distilled water, and the fourth station for rinsing the interior with distilled water. Or, the first station can be for rinsing both the exterior and interior with tap water, and the second station can be for rinsing both the interior and exterior with distilled water. In short, the beaker and flask cleaning devices should clean the flasks or flasks according to the installation specifications.

[0026] The aforementioned transfer device for pH testing concentrates all materials required for pH testing, such as flasks, beakers, flask stoppers, and extraction solutions, on the flask and beaker transfer devices. This facilitates material management during the testing process, makes full use of space, and greatly reduces the area occupied. For samples with abnormal pH values, a sample retention device for the sample extraction solution is provided, which facilitates manual handling of samples with abnormal pH values ​​without affecting the normal flow of other flasks, beakers, and extraction solutions. This facilitates the automation of the pH testing process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the structural principle of a flow device for pH value detection according to the present invention.

[0028] Figure 2 This is a schematic diagram of the structural principle of a flask turnover device for pH value detection according to the present invention.

[0029] Figure 3 This is a schematic diagram illustrating the structural principle of a beaker turnover device for pH value detection according to the present invention.

[0030] Figure 4 This is a schematic diagram of the reciprocating vibration section of the reciprocating moving component in the flask turnover device of Embodiment 1 of the pH detection flow device of the present invention.

[0031] Figure 5 for Figure 4 A schematic diagram of the AA-direction cross-section.

[0032] Figure 6 This is a schematic diagram illustrating the working principle of the capping suction cup and the liquid addition tube in Embodiment 1 of the flow device for pH detection according to the present invention.

[0033] Figure 7 This is a schematic diagram of the reciprocating moving component in the flask turnover device of Embodiment 2 of the pH detection device of the present invention.

[0034] Figure 8 This is a schematic diagram of the bell-shaped inlet structure of the reciprocating drive groove in the reciprocating moving assembly of a flow device for pH detection according to Embodiment 2 of the present invention.

[0035] Figure 9 This is a schematic diagram illustrating the working principle of the suction cup and suction tube in Embodiment 3 of the flow device for pH value detection according to the present invention.

[0036] In the diagram: 1. Flask circulation conveyor frame; 2. Reciprocating load-bearing wheel; 3. Reciprocating limit wheel; 4. Reciprocating drive cam; 5. Reciprocating drive rod; 6. Reciprocating push wheel; 7. Reciprocating guide rail; 8. Reciprocating guide rail seat; 9. Reciprocating tension spring; 90. Flask conveyor chain plate; 91. Reciprocating drive motor; 92. Reciprocating crank wheel; 93. Reciprocating rocker arm; 94. Rocker arm guide rail seat; 95. Rocker arm guide rail; 96. Reciprocating drive groove; 10. Flask; 11. 111. Reciprocating moving assembly; 112. Reciprocating assembly mounting plate; 113. Reciprocating plate; 114. Reciprocating plate push-pull wheel; 115. Reciprocating plate guide shaft seat; 116. Reciprocating plate compression spring; 117. Reciprocating plate guide shaft; 12. Flask pressure plate bolt; 13. Flask conveyor drive wheel; 148. Flask rinsing nozzle; 149. Flask hot air main pipe; 140. Flask hot air branch pipe; 20. Flask water tank; 21. Beaker. 22. Beaker conveyor chain plate; 23. Beaker conveyor drive wheel; 240. Beaker rinsing water nozzle; 241. Beaker hot air main pipe; 25. Beaker hot air branch pipe; 30. Beaker water trough; 31. Flask stopper conveyor belt; 32. Flask stopper; 40. Flask stopper conveyor drive wheel; 41. Sample plate; 50. Sample beaker; 51. Suction plumb bob guide rail; 52. Suction plumb bob slider; 53. Suction horizontal guide rail mounting plate; 54. Suction water... 55. Smooth block; 56. Suction nozzle mounting plate; 57. Suction cup; 58. Suction tube; 59. Cylinder; 60. Cylinder mounting plate; 61. Cylinder rod fixing plate; 62. Suction nozzle limiting rod; 63. Filling plumb bob guide rail; 64. Filling plumb bob slider; 65. Filling horizontal guide rail mounting plate; 66. Filling horizontal guide rail; 67. Filling horizontal slider; 68. Suction cup with cap; 68. Suction cup with cap; 69. Suction tube. Detailed Implementation

[0037] The following examples, in conjunction with the accompanying drawings, provide several specific embodiments of a flow device for pH detection according to the present invention. These embodiments are merely illustrative examples of the present invention and do not constitute a limitation on the claims of the present invention. Any aspects not covered in the present invention are applicable to the prior art.

[0038] Embodiment 1 of a flow device for pH detection according to the present invention (e.g.) Figure 1-6 As shown):

[0039] A transfer device for pH value detection includes a flask transfer device, a beaker transfer device, and a liquid dispensing device.

[0040] The flask turnover device includes a flask circulation conveying device, a reciprocating moving assembly 11, a flask stopper turnover assembly, and a flask cleaning device.

[0041] The flask circulation conveying device is a circulation conveyor chain plate, with the circulating chain plate serving as the flask conveying component. However, it is not excluded that other devices suitable for circulation conveying, such as conveyor belts, conveyor chains, or even horizontally rotating circular turntables, can be used instead of the conveyor chain plate as the flask circulation conveying device.

[0042] The reciprocating moving assembly 11 includes a reciprocating plate 112 as a reciprocating moving component (it is not excluded that the reciprocating moving component adopts a frame-shaped or other shaped structure), a reciprocating drive motor 91, a reciprocating drive cam 4, a reciprocating drive rod 5 and a reciprocating push wheel 6 as reciprocating drive components, and a reciprocating guide rail 7 and a reciprocating guide rail seat 8 as reciprocating guide components.

[0043] A reciprocating assembly mounting plate 111 is fixed on the flask conveyor chain plate 90. The reciprocating plate guide shaft 115 is mounted on the fixed reciprocating assembly mounting plate 111 through the reciprocating plate guide shaft seat 113. The elongated hole on the reciprocating plate 112 passes through the reciprocating plate guide shaft 115 and is movably assembled on the reciprocating plate guide shaft 115. The flask 10 is fixedly mounted on the reciprocating plate 112 through the flask pressure plate 116 and the flask pressure plate bolt 117. Multiple flasks can be mounted on each reciprocating plate 112. The number of flasks mounted on each reciprocating plate 112 is 6 (preferably a multiple of 3), but other numbers are not excluded.

[0044] A reciprocating drive motor 91 is mounted on the frame 1 of the flask circulation conveyor. A reciprocating drive cam 4 is mounted on the shaft of the reciprocating drive motor 91. A reciprocating guide rail 7 is mounted on the frame of the flask circulation conveyor via a reciprocating guide rail seat 8. Multiple rods with reciprocating push rollers 6 mounted at their ends extend from the reciprocating drive rod 5. The reciprocating push rollers 6 are in contact with one end of the reciprocating plate 112. A reciprocating plate compression spring 114 is fitted on the reciprocating plate guide shaft 115 between the other end of the reciprocating plate 112 and the reciprocating plate guide shaft seat 113.

[0045] The reciprocating drive motor 91 pushes the reciprocating drive rod 5 via the reciprocating drive cam 4, causing the reciprocating pusher 6 to move away from the drive motor 91. The reciprocating drive rod 5 moves closer to the reciprocating drive cam 4 by the reciprocating tension spring 9 connecting the reciprocating drive rod 5 to the flask circulation conveyor frame 1. The reciprocating pusher 6 contacts the reciprocating plate 112, pushing the reciprocating plate 112 away from the reciprocating drive motor 91. The movement of the reciprocating plate 112 towards the reciprocating motor 91 is caused by the force applied by the reciprocating plate compression spring 114.

[0046] When the reciprocating plate 112 moves towards the reciprocating drive motor 91, the reciprocating limit wheel 3 mounted on the flask circulation conveyor frame 1 blocks the movement of the reciprocating plate 112 under the elastic force of the reciprocating plate compression spring 114, so that the position where the reciprocating plate 112 is closest to the reciprocating drive motor 91 is the position where the reciprocating plate 112 contacts the reciprocating limit wheel 3. The stroke of the reciprocating plate 112 depends on the parameters of the reciprocating drive cam 4. When the reciprocating pusher 6 pushes the reciprocating plate 112 away from the reciprocating drive motor 91, the reciprocating bearing wheel 2 mounted on the flask circulation conveyor frame 1 contacts the reciprocating component mounting plate 111 to bear the thrust acting on the reciprocating component mounting plate 111, preventing the reciprocating component mounting plate 111 from driving the flask conveyor chain plate 90 away from the reciprocating drive motor 91, thereby improving the service life of the flask circulation conveyor.

[0047] The flask stopper turnover assembly includes a flask stopper conveying device, a flask stopper picking device, and a flask stopper placing device.

[0048] The flask stopper conveying device is a flask stopper conveyor belt 30, which is driven by a flask stopper conveying drive wheel 32. Of course, it is not excluded to use a conveyor belt, conveyor chain plate, circular turntable or other circulating conveying device as the flask stopper conveying device, or even to use a horizontally reciprocating component as the flask stopper conveying device, as long as it can move the flask stopper from the flask stopper picking position to the flask stopper placing position.

[0049] like Figure 1As shown, the flask stopper removal device includes a stopper suction cup 56 and a stopper suction cup drive and guide assembly. The flask stopper 31 is made of polytetrafluoroethylene. The stopper suction cup 56 uses a vacuum suction cup to pick up the top surface of the flask stopper. The stopper suction cup drive and guide assembly includes a guide rail, a slider, etc. The stopper suction cup 56 is mounted on a suction nozzle mounting plate 55, which is mounted on a suction horizontal slider 54. The suction horizontal slider 54 is movably mounted on a suction horizontal guide rail 53 whose length direction is perpendicular to the flask conveying direction. The suction horizontal guide rail 53 is mounted on a suction plumb slider 51 via a suction horizontal guide rail mounting plate 52. The suction plumb slider 51 is slidably mounted on the suction... The liquid-lifting plumb bob guide 50 is mounted on a guide slider that moves along the flask conveying direction and is mounted on the frame of the flask circulation conveying device. The suction nozzle mounting plate 55 has three orthogonal degrees of freedom relative to the flask circulation conveying device. Relying on the motion degrees of freedom of these components, the stopper chuck 56 can remove the flask stopper from the flask mouth and then place the flask stopper on the flask stopper conveyor belt 30, which serves as the flask stopper conveying device. One stopper chuck 56 can pick up all the flask stoppers on a row of flasks on the flask circulation conveying device and place them onto the flask stopper conveyor belt 30 in sequence. Of course, multiple stopper chucks 56 can also be used to pick up multiple flask stoppers at once. The flask stopper can also be made of materials such as metal, glass, or polypropylene. If the flask stopper has a magnetic metal component, an electromagnet can be used instead of a vacuum chuck to pick it up. It is also possible that the flask is a conical flask with a stopper screw, in which case the stopper screw is removed and placed on the flask stopper conveyor belt 30. Alternatively, a pneumatic or electric gripper or clamp can be used to hold the flask stopper instead of a vacuum chuck. The stopper removal device is located at the end of the conveying direction of the flask circulation conveyor. After removing the stopper from the flask mouth, it is placed on the stopper conveyor, whose conveying direction is opposite to that of the flask circulation conveyor. Other forms of multi-axis drive and guide structures are also possible for the stopper opening suction cup drive and guide assembly. Figure 1 The flask stoppers 31 on the flask stopper conveyor belt 30 are in multiple rows. In this way, the flask stopper conveyor belt 30 moves intermittently, rotating only one station at a time. Alternatively, after each flask stopper is placed on the flask stopper conveyor belt at the right end, the flask stopper conveyor belt 30 can directly move the right-side flask stopper to the left side of the flask stopper conveyor belt 30 in one continuous motion.

[0050] The stopper-removing and stopper-dispensing devices for flasks have the same structure and working principle, such as... Figure 1 , 6As shown, the flask stopper placement device, located near the starting end of the conveying direction of the flask circulation conveyor, places the flask stopper 31 from the flask stopper conveyor 30 into the flask mouth. The flask stopper placement device includes a stopper suction cup 66 and a stopper suction cup drive and guide assembly. The stopper suction cup 66 uses a vacuum suction cup to pick up the top surface of the flask stopper (other methods similar to the stopper removal method can also be used). The stopper suction cup drive and guide assembly includes a guide rail, a slider, etc. The stopper suction cup 66 is mounted on the filling nozzle mounting plate 65, which is mounted on the filling horizontal slider 64. The filling horizontal slider 64 is movably mounted on the filling horizontal guide rail 63, whose length direction is perpendicular to the flask conveying direction. The filling horizontal guide rail 63 is connected to the filling horizontal guide rail 63 via the filling horizontal guide rail. The guide rail mounting plate 62 is mounted on the liquid-adding plumb bob slider 61, which is slidably mounted on the liquid-adding plumb bob guide rail 60. The liquid-adding plumb bob guide rail 60 is mounted on the guide rail slider, which moves along the flask conveying direction and is mounted on the frame of the flask circulation conveying device. The liquid-adding nozzle mounting plate 65 has three orthogonal degrees of freedom relative to the flask circulation conveying device. Relying on the motion degrees of freedom of these components, the capping suction cup 66 can move the flask stopper 31 from the flask stopper conveyor belt 30 to the flask mouth on the flask circulation conveying chain plate. One capping suction cup 66 can pick up all the flask stoppers on the flask stopper conveyor belt 30 and put them into the flask mouth in turn. Of course, multiple capping suction cups 66 can also be used to transfer multiple flask stoppers at one time. The addition tube 67, which is installed on the addition nozzle mounting plate 65 at the same time as the capping suction cup 66, is used to add the extract to the flask. In order to simplify the mechanism, the addition tube 67 and the capping suction cup 66 use the same set of drive and guide mechanisms. After the capping suction cup 66 contacts the flask stopper 31 downwards, the capping suction cup spring 661 is compressed so that it can be better attached and at the same time facilitates the height position control of the capping suction cup 66.

[0051] The flask cleaning device includes a flask rinsing nozzle 13. The flask rinsing nozzle 13 is positioned with its opening facing upwards, aligned with the downward-facing flask mouth below the flask circulation conveyor. The flask cleaning device is located at the end of the conveying direction on the flask circulation conveyor, where the flask 10 is flipped to the position where the opening is downwards. The flask cleaning device includes at least one flask rinsing nozzle 13. The interior of the flask is rinsed with distilled water. To save distilled water, two flask rinsing nozzle working positions can be set up, one for rinsing with tap water and the other for rinsing with distilled water. Alternatively, multiple rinsing nozzle working positions can be set up. For example, the first working position uses a tap water nozzle to clean the exterior of the flask, the second working position uses a tap water nozzle to clean the interior of the flask, the third working position uses a distilled water nozzle to clean the exterior of the flask, and the fourth working position uses a distilled water nozzle to clean the interior of the flask. To improve the cleaning effect, the flask rinsing nozzle can be a nozzle with a scattering jet function. The flask rinsing nozzle 13 can be installed on a moving part driven by a cylinder or other drive component and move up and down in the direction of a plumb bob, so that the flask rinsing nozzle 13 can extend upward into the flask for rinsing. After rinsing, it can be withdrawn from the flask to prevent obstruction of the flask's movement.

[0052] To ensure the flasks dry quickly after cleaning, the flask handling device includes a flask drying device located below the flask circulation conveyor. The flask drying uses a hot air pipe that can blow hot air. The main hot air pipe 140 has multiple hot air branch pipes 141. Each hot air branch pipe 141 has an upward-facing opening that blows hot air into the downward-facing flask 10. To improve the drying effect, the main hot air pipe 140 can be mounted on a driving component that moves in the vertical direction, such as a cylinder. When the driving component drives the hot air branch pipes 141 into the flask, it blows hot air to dry the flask. When the hot air branch pipes 141 descend below the flask, they do not obstruct the movement of the flask. It is not ruled out that a drying chamber with an inlet and outlet may be set up at the drying section below the flask circulation conveyor. The drying chamber with an inlet and outlet is a drying chamber-like structure that surrounds the flask along the length of the flask circulation conveyor below the flask circulation conveyor, with openings at both ends or movable openings at both ends. The drying chamber-like structure can adopt the usual circulating drying chamber structure and heating method.

[0053] The flask circulation conveyor operates intermittently. Before the flasks begin to move, the reciprocating plate 112 moves towards the reciprocating drive motor 91 to its limit position and then stops to prevent interference between the reciprocating plate 112 and the reciprocating push wheel 6. The flask circulation conveyor moves the reciprocating plate 112 one station, and then the reciprocating drive motor 91 starts rotating again to drive the reciprocating plate 112 to reciprocate. For the section of the flask conveyor where the flask neck is facing upwards, the conveying distance is from the beginning to the end along the conveying direction (…). Figure 1 , 2 From left to right, the flask passes through the following locations in sequence: adding textile fragments, adding liquid, capping, multiple reciprocating oscillations, opening the cap, and removing liquid from the flask. The flask continues to be conveyed and rotated until it is below the flask circulation conveyor, with the plumb bob at the flask opening pointing downwards. Figure 1 , 2 (Middle right end) is the position of the flask cleaning device. After the flask with the opening facing down is cleaned, it continues to move past the position of the flask drying device.

[0054] During the process of the flask being tilted under the flask circulation conveyor, the liquid and textiles in the flask will be poured out, including during flask cleaning, the liquid will also flow downwards, and a flask water tank 15 is provided under the flask circulation conveyor.

[0055] like Figure 1 , 3As shown, the beaker turnover device includes a beaker circulation conveying device and a beaker cleaning device. The beaker circulation conveying device is a beaker conveying chain plate 21. The circulating beaker conveying chain plate 21 serves as a beaker conveying component. It is possible to use a conveyor belt, conveyor chain, or even a circular turntable as a circulation conveying device. Beakers 20 are mounted on the beaker conveying chain plate 21. The section of the beaker 20 with its opening facing upwards is used to hold the extraction liquid. When the beaker 20 rotates to its opening facing downwards, the beaker cleaning device cleans the beaker. The beaker cleaning device is mounted on the frame of the beaker circulation conveying device and includes a beaker flushing device. The beaker cleaning device also includes a cylinder (not shown in the figure) mounted on the frame of the beaker circulation conveyor for driving the beaker rinsing nozzle 23 to rise and fall. The beaker rinsing nozzle 23 is a lifting device for the rinsing nozzle, but other lifting devices may be used. After the beaker rinsing nozzle 23 rises, it enters the interior of the beaker. After the beaker rinsing nozzle 23 falls, it exits the beaker without hindering the movement of the beaker. The beaker rinsing nozzle 23 is the same as the flask rinsing nozzle. It requires at least one distilled water rinsing station, and multiple rinsing stations can also be set, including external cleaning, internal tap water cleaning, external distilled water cleaning, and internal distilled water cleaning stations.

[0056] To improve the drying speed of the flask, a beaker drying device is installed below the beaker circulation conveyor after the beaker cleaning position, where the beaker continues to move. The beaker drying device is the same as the flask drying device. The beaker hot air main pipe 240 and beaker hot air branch pipe 241 can be used to replace the flask hot air main pipe 140 and flask hot air branch pipe 141 to dry the cleaned beaker, or a drying room structure can be used for drying.

[0057] Below the beaker circulating conveyor chain plate is a beaker water tank 25, which is used to hold the liquid poured out of the beaker and the water used to clean the beaker.

[0058] The liquid extraction device is installed on the frame of the flask circulation conveying device or the beaker circulation conveying device. The device includes a suction tube 57 for transferring liquid from the flask and a liquid extraction drive guide component. The suction tube 57 serves as the liquid extraction component. This component can be a piston-type device such as a syringe, or another type of pump. The pump inlet is connected to the flask via a pipe. The liquid extraction device extracts the extract from the flask 10 on the flask circulation device and injects it into the beaker 20 on the beaker circulation device. The liquid extraction device travels to the end of the conveying direction of the flask circulation conveying device. Figure 1 , 2 Liquid is drawn from the flask with the plumb bob facing upwards at the right end of the beaker circulation conveyor, and the flow direction is adjusted from the starting end of the flow path. Figure 1 , 2The extract taken from the flask (at the right end) is injected into the beaker 20. The suction tube 57 installed on the suction nozzle mounting plate 55 is used to draw the extract from the flask 10 and put the drawn extract into the beaker. To simplify the mechanism, the suction tube 57 shares a drive guide device with the stopper suction cup 56 to transfer the extract.

[0059] A sample retention plate 40, which serves as a sample retention device, is installed above the beaker turnover device. The sample retention plate is a plate-shaped component installed on the frame of the beaker circulation conveyor chain plate. The sample retention plate 40 is located above the beaker conveyor chain plate, and a sample retention beaker 41 containing the extract is placed on the sample retention plate 40 as a sample retention container. Of course, it is not excluded that a conveyor belt, turntable or other conveying device can be used as a sample retention device. When the pH value of the extract in the beaker 20 on the beaker conveyor chain plate 21 is detected to be abnormal, the suction tube 57 takes the abnormal extract into the sample retention beaker 41 for preservation and manual re-inspection.

[0060] When using the aforementioned transfer device for pH detection, multiple sets of reciprocating moving components 11, each equipped with a flask, are placed on the flask circulation conveyor chain. The flask circulation conveyor chain moves one flask position at a time, at the starting end of the conveying direction of the flask circulation conveyor chain ( Figure 1 , 2 (Rotate the left side of the flask mouth to the position where the plumb bob is facing upwards) Place the textile fragment into flask 10, and add the test solution (water or potassium chloride solution) into the flask. After adding the solution, the capping suction cup 66 of the flask capping device places the flask cap 31 on the flask capping conveyor belt 30 into the flask mouth. The position where the test solution is added into the flask is called the liquid addition position, and the position where the flask cap is placed into the flask mouth is called the capping position. The capping position and the liquid addition position can be the same position, or the capping position can be delayed in the conveying direction. Figure 1 , 2 At least one position in the liquid addition location (from center to right), the flask circulation conveyor transports the flask that has been filled with liquid and has its stopper closed towards the end of the conveying direction (from center to right). Figure 1 , 2 The middle phase moves to the right, and the liquid taking device is at the end of the conveying direction of the flask circulation conveyor, at the position where the plumb bob at the flask mouth is pointing upwards. Figure 2 (At the flask position with the opening facing upwards on the lower right side of the flask stopper conveyor belt 30) Remove the flask stopper 31 and place it on the flask stopper conveyor belt 30 to be conveyed to the starting conveying position on the left side of the flask circulation conveyor chain plate. The flask stopper 31 can be reused. After the extract in the flask 10 is extracted, it is injected into the starting end of the conveying direction of the beaker circulation conveyor device. Figure 1 , 3 The beaker mouth of the beaker 20 is rotated to the position where the plumb bob is facing upwards. (Right end of the beaker conveying device)

[0061] The reciprocating drive motor 91 drives the reciprocating plate 112 of the reciprocating moving part 11 located between the flask capping position and the liquid dispensing position on the flask circulating conveyor chain to reciprocate. When the flask conveyor chain starts to move the flask 10, the reciprocating drive motor 91 stops moving. After the flask 10 is moved to one station, the reciprocating drive motor 91 drives the reciprocating plate 112 to drive the beaker 10 to reciprocate. The reciprocating vibration frequency and amplitude are determined according to the testing standards. Generally, the reciprocating vibration frequency is not less than 60 times / minute and the vibration amplitude is not less than 20mm.

[0062] Before the liquid taking device takes liquid, the flask stopper taking device removes the flask stopper 31 from the flask mouth at the liquid taking position or at the position one workstation before the liquid taking position and places it on the flask stopper conveyor belt 30. The flask stopper conveyor belt 30 transports the flask stopper 31 to the capping position. After the liquid is added, the flask stopper placing device places the flask stopper 31 on the flask stopper conveyor belt 30 into the flask mouth of the flask at the capping position.

[0063] The flask rinsing nozzle 13 below the flask circulation conveyor chain sprays water upwards to rinse the inside of the flask 10. After rinsing, the flask continues to move to the next stage. Figure 2 In the station (from left to right), the hot air branch pipe 141 below the flask circulation conveyor chain plate acts as a hot air nozzle to blow hot air into the flask. The flask water trough 15 below the flask circulation chain plate is used to collect liquids poured out of the flask and textile fragments. Water flowing from the flask rinsing nozzle 13 also falls into the flask water trough 15. The flask water trough 15 is equipped with a filter screen to filter textile fragments and fibers.

[0064] The beaker circulation conveyor transports the beaker 20 containing the extract to be tested to the detection position for pH value detection. The detection position is preferably at the beginning of the conveying stroke on the beaker circulation conveyor. Figure 3 (Right side) The beaker mouth is rotated to the second station after the plumb bob is facing upwards. The first station is used to put the extract into the beaker, and the second station is used to detect the pH value. When the pH value is abnormal, the extract of the abnormal group can be drawn into the sample beaker 41 above the beaker circulation conveyor device for manual re-inspection. Beaker 20 is moved to the end of the beaker circulation conveyor device. Figure 3 (Left side) After flipping downwards, the beaker opening is plumb downwards under the beaker circulation conveyor. The rinsing nozzle of the beaker cleaning device rinses the beaker clean. The beaker drying device below the beaker circulation conveyor dries the beaker. The beaker passes through the beaker cleaning device first and then the beaker drying device below the beaker circulation conveyor. The beaker water tank below the beaker circulation conveyor holds the liquid poured out of the beaker and the liquid used to clean the beaker.

[0065] In this embodiment, the conveying directions of the flask conveying device and the beaker conveying device are parallel and opposite, but parallel and unidirectional or perpendicular arrangement is not excluded.

[0066] Embodiment 2 of the present invention: a flow device for pH detection (e.g.) Figure 7 , 8 As shown):

[0067] The difference between this embodiment and Embodiment 1 is that:

[0068] A reciprocating plate guide shaft 115 is mounted on the flask conveyor chain plate 90 via a reciprocating plate guide shaft seat 113. A reciprocating plate 112 is slidably mounted on the reciprocating plate guide shaft 115 through a hole on the reciprocating plate 112. A reciprocating plate push-pull wheel 1121 extends downward in the direction of a plumb bob from the bottom of the reciprocating plate 112. The reciprocating plate push-pull wheel 1121 passes through a long slot on the flask conveyor chain plate 90 and the frame 1 of the flask circulation conveying device. A reciprocating crank wheel 92 mounted on the shaft of a reciprocating drive motor 91 mounted on the frame 1 of the flask circulation conveying device drives a reciprocating drive groove 96 to reciprocate in a direction perpendicular to the flask conveying direction via a reciprocating rocker arm 93. The reciprocating drive groove 96 is slidably mounted on a rocker arm guide rail 95 through a hole on the rocker arm guide rail 95. The rocker arm guide rail 95 is mounted on the bottom surface of the frame 1 of the flask circulation conveying device via a rocker arm guide rail seat 94. The reciprocating drive motor 91 drives the reciprocating drive groove 96 through a crank-slider mechanism. 6. Reciprocating Motion: When the flask circulation conveyor moves the flask, the reciprocating plate push-pull wheel 1121 under the reciprocating plate 112 enters the groove range of the reciprocating drive groove 96 and is pushed and pulled back and forth by the reciprocating drive groove 96. To facilitate the entry of the reciprocating plate push-pull wheel 1121 into the reciprocating drive groove 96, the end of the reciprocating plate push-pull wheel 1121 entering the reciprocating drive groove 96 is flared. In this embodiment, the reciprocating moving component scheme allows the reciprocating drive motor 91 to move without stopping when the flask conveyor starts to move. Since the inlet end of the reciprocating drive groove 96 is flared, as long as the movement limit position of the reciprocating plate 112 does not exceed the flared range of the reciprocating drive groove 96, regardless of the position of the reciprocating plate 112, when the reciprocating plate moves along the conveying direction of the flask conveyor, the reciprocating plate push-pull wheel 1121 below it will enter the flared range of the reciprocating drive groove 96. In addition to the reciprocating moving component scheme in this embodiment, any scheme that can drive a reciprocating moving component is acceptable. The flask circulation conveyor and beaker circulation conveyor can even convey continuously, as long as the liquid taking, flask stopper taking, and flask stopper placing devices can follow the movement of the flask and beaker.

[0069] Although all embodiments use a reciprocating drive motor 91, it is possible that a vibration motor is used at each oscillation position.

[0070] Other methods can be used to fix the flask to the reciprocating plate, such as using rigid clamps, elastic clamps, or adhesive bonding.

[0071] Embodiment 3 of the present invention: a flow device for pH detection (e.g.) Figure 9As shown):

[0072] The difference between this embodiment and Embodiment 1 is that:

[0073] like Figure 9 As shown, the liquid-taking device in this embodiment employs six sets of stopper-opening suction cups 56 and suction tubes 57 working simultaneously, capable of processing six flask stoppers and drawing liquid from six flasks at once. Because the flask spacing on the flask turnover device differs from the beaker spacing on the beaker turnover device (the beaker spacing is smaller than the flask spacing), ... Figure 9 As shown, six suction nozzle mounting plates 55 are installed on the horizontal suction guide rail 53. Six sets of open-stop suction cups 56 and suction tubes 57 are installed on the six suction nozzle mounting plates 55. When the six suction nozzle mounting plates 55 are close together, the distance between two adjacent open-stop suction cups 56 or suction tubes 57 is exactly the same as the beaker spacing on the beaker turnover device. One end of the cylinder 58 is installed on the suction nozzle mounting plate 55 at one end through the cylinder mounting plate 581, and the cylinder rod of the cylinder 58 is installed on the suction nozzle mounting plate 55 at the other end through the cylinder rod fixing plate 582. A suction nozzle limiting rod 59 is installed between two adjacent suction nozzle mounting plates 55. One end is hinged to a suction nozzle mounting plate 55, and the other end has a long hole fitted onto a pin on an adjacent suction nozzle mounting plate 55. When the cylinder rod extends, the six suction nozzle mounting plates 55 are pulled apart. Due to the restriction of the long hole on the suction nozzle limiting rod 59, the six suction nozzle mounting plates 55 are pulled apart by the same distance, which is equal to the spacing between the flasks on the flask turnover device. At this time, when the liquid taking device is in the position of the flask turnover device, the six suction tubes 57 are just aligned with the six flasks. When it is necessary to inject the liquid in the suction tube into the beaker in the beaker turnover device, the cylinder rod of the cylinder 58 retracts, and the six suction tubes 57 can be aligned with the beaker on the beaker turnover device at the same time.

[0074] The driving devices in all embodiments can be replaced by common components and mechanisms with the same function, such as cylinders, linear motors, rotary motors with lead screws, linkage mechanisms, motors with cam push rods, electromagnets, etc., all of which can achieve motion drive. Guiding can be achieved using optical axes, sliders, or linear guides, etc., all of which are common knowledge in the art and will not be elaborated further. This invention is not limited to the embodiments discussed above. Those skilled in the art can deduce other variations based on this invention, and these variations also fall within the scope of this invention.

Claims

1. A flow device for pH value detection, characterized in that... It includes a flask handling device, a beaker handling device, and a liquid dispensing device. The flask turnover device includes a flask circulation conveying device, a reciprocating moving assembly, a flask stopper turnover assembly, and a flask cleaning device. The flask circulation conveying device includes a circulating flask conveying component. The reciprocating moving assembly includes a reciprocating moving component, a reciprocating driving component, and a reciprocating guiding component. The reciprocating moving component is directly or indirectly mounted on the flask conveying component via the reciprocating guiding component. The flasks are mounted on the reciprocating moving component. The flask stopper turnover assembly includes a stopper-retrieving device, a stopper-conveying device, and a stopper-releasing device. The flask cleaning device includes a flask rinsing nozzle. The beaker turnover device includes a beaker circulation conveying device and a beaker cleaning device. The beaker circulation conveying device includes a circulating beaker conveying component. Beakers are mounted on the beaker conveying component. The beaker circulation conveying device transports the beaker containing the extract to be tested to the testing position. The testing position is the second station after the beaker opening rotates to the upward position at the beginning of the conveying stroke on the beaker circulation conveying device. The first station is used to put the extract into the beaker, and the second station is used to test the pH value. The beaker cleaning device includes a beaker rinsing nozzle. The liquid extraction device includes a liquid extraction component and a liquid extraction drive guide component. The liquid extraction component is mounted on the frame of the flask circulation conveying device or the beaker circulation conveying device via the liquid extraction drive guide component. The liquid extraction device extracts liquid from the flask with the opening plumb bob facing upward at the end of the travel direction of the flask circulation conveying device, and injects the extract taken from the flask into the beaker at the beginning of the travel direction of the beaker circulation conveying device.

2. The flow device for pH detection according to claim 1, characterized in that... The reciprocating drive component is mounted on the frame of the flask circulation conveying device, and the reciprocating drive component drives the reciprocating moving component to reciprocate in a direction perpendicular to the conveying direction of the flask circulation conveying device.

3. The flow device for pH value detection according to claim 1, characterized in that... The conveying direction of the flask stopper conveying device is opposite to that of the flask circulation conveying device, and the conveying length of the flask stopper conveying device is shorter than that of the flask circulation conveying device.

4. The flow device for pH value detection according to claim 1, characterized in that... The flask circulation conveying device and the flask circulation conveying device are conveyor chains, conveyor belts, conveyor chain plates or turntables.

5. The flow device for pH value detection according to claim 1, characterized in that... The flask cleaning device also includes a flask rinsing nozzle lifting device, which raises the flask rinsing nozzle to enter the flask and lowers it to exit the flask. The beaker cleaning device also includes a beaker rinsing nozzle lifting device, which raises the beaker rinsing nozzle to enter the beaker and lowers it to exit the beaker.

6. The flow device for pH detection according to claim 1, characterized in that... The flask turnover device includes a flask drying device and a flask water spray tank located below the flask circulation conveyor. The flask drying device uses hot air nozzles inserted into the flasks for drying or a drying room with an inlet and outlet that surrounds the flasks for drying.

7. The flow device for pH detection according to claim 6, characterized in that... The flask drying device using the hot air nozzle includes a hot air nozzle and a hot air nozzle drive component that drives the hot air nozzle to move up and down. The hot air nozzle is mounted on the frame of the flask circulation conveyor via the hot air nozzle drive component. The hot air nozzle drive component drives the hot air nozzle to insert into the flask and blow out hot air to dry the flask. The hot air nozzle does not obstruct the movement of the flask after it descends.

8. The flow device for pH detection according to claim 1, characterized in that... The beaker turnover device includes a beaker drying device and a beaker water spray tank located below the beaker circulation conveying device. The beaker drying device uses hot air nozzles inserted into the beaker to blow air for drying or uses a drying room with air outlet and inlet / outlet for drying.

9. The flow device for pH detection according to claim 1, characterized in that... The beaker turnover device includes a sample retention device, which is a component with a container for holding the extract.

10. The flow device for pH detection according to claim 1, characterized in that... When using the aforementioned transfer device for pH detection, at the starting end of the conveying direction of the flask circulation conveyor, the flask mouth is rotated to the position where the plumb bob is facing upwards. Textile fragments and solutions are then added to the flask installed on the flask circulation conveyor. Alternatively, the flask can be removed from the flask circulation conveyor, textile fragments and solutions can be added, and then the flask can be reinstalled on the flask circulation conveyor. After the liquid addition is completed, the flask stopper placement device places the flask stopper from the flask stopper conveyor into the mouth of the flask after liquid addition. The position where the flask stopper is placed in the mouth of the flask is called the capping position. The flask stopper removal device removes the flask stopper at the end of the conveying direction of the flask circulation conveyor, where the plumb bob is facing upwards, and places it on the flask stopper conveyor to be conveyed to the starting conveying position of the flask circulation conveyor. The reciprocating drive component of the reciprocating moving component drives the reciprocating moving component of the flask between the capping position and the liquid removal position to reciprocate.

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