Water sample bag opening and closing device

Abstract

This utility model relates to the field of laboratory automation technology and discloses a water sample bag opening and closing device. The water sample bag includes a bag body and a bag mouth, with a flange at the lower end of the bag mouth. A flat, rigid shoulder is located between the bag mouth and the bag body, with pointed ends on both sides. A cap is screwed onto the bag mouth. The opening and closing device includes a ring-shaped bag frame with an array of bag clamping parts on its circumference. Each bag clamping part includes cap holders on both sides of the opening and a narrow slit inside the opening. The cap holders support the flange at the lower end of the bag mouth, and the narrow slit secures the bag body below the shoulder. The bag frame is mounted on a workbench via a turntable, and a capping mechanism is located on the workbench beside the bag frame. Based on the characteristics of water sample bags, this utility model achieves rapid opening and closing of array-type water sample bags by rotating the bag frame and raising / lowering the rotating clamp.

Description

Technical Field

[0001] This utility model relates to the field of laboratory automation technology, and in particular to a device for opening and closing the cap of a water sample bag. Background Technology

[0002] In water quality testing experiments, water samples are collected from the environment and sent back to the laboratory for testing of various parameters. The water sample bags are soft containers, and in some laboratories, they can only be opened manually. After opening, the sample is drawn out and sent to subsequent stages such as separation, dilution, and incubation to determine the types and quantities of microorganisms in the sample water. The cap is then screwed back on after the liquid is taken out.

[0003] With the increasing prevalence of automated laboratories, there are now automated processing solutions available for liquid handling and microbial culture processes.

[0004] The water sample bag has a special structure. If it is to be opened and aspirated by automated equipment, the sample bag must be fixed in place before it can be opened automatically. However, the soft nature of the water sample bag makes it impossible to fix it effectively. Even if it is fixed, the bag will twist and become impossible to open by rotating the cap. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems and provide a water sample bag opening and closing device. Based on the characteristics of the water sample bag, the device achieves rapid opening and closing of the array-type water sample bag by rotating the bag frame and raising and lowering the rotating clamp.

[0006] The technical solution adopted by this utility model is:

[0007] A water sample bag opening and closing device is characterized in that the water sample bag includes a bag body and a bag mouth, a flange is provided at the lower end of the bag mouth, a flat bag shoulder is formed between the bag mouth and the bag body, the two sides of the bag shoulder are pointed, a cap is screwed onto the bag mouth, the opening and closing device includes an annular bag frame, an array of bag clamping parts are provided on the circumference of the bag frame, the bag clamping parts include cap holders on both sides of the opening and a narrow slit on the inner side of the opening, the cap holders are used to support the flange at the lower end of the bag mouth, the narrow slit is used to clamp the bag body below the bag shoulder, the bag frame is mounted on a worktable via a turntable, a capping mechanism is provided on the worktable on the side of the bag frame, the capping mechanism includes a support column on the worktable, a lifting and rotating chuck is provided on the support column, the turntable controls the rotation of the bag frame, and the lifting and rotating chuck opens and closes the water sample bag at the corresponding position of the bag clamping part.

[0008] Furthermore, the bag clamping parts are densely distributed around the periphery of the bag frame, the radius of the bag frame is larger than the width of the water sample bag, and the number of bag clamping parts is greater than 10.

[0009] Furthermore, the turntable includes a support frame, on which a turntable is mounted, and the bag holder is mounted on the turntable. A servo motor is mounted on the support frame, and the servo motor drives the turntable to rotate, thereby causing the bag holder to rotate.

[0010] Furthermore, the lifting and rotating chuck includes a lifting unit and a rotating unit. The lifting unit is mounted on a support column, and the rotating unit is mounted on the lifting unit. The rotating unit is equipped with grippers for gripping the cap of the water sample bag.

[0011] Furthermore, the rotating unit is connected to the lifting unit via a buffer seat.

[0012] Furthermore, a barcode scanner is provided on the side of the rotating unit, with the scanner's identification head facing downwards.

[0013] Furthermore, a photoelectric contact piece is provided on the turntable, and a photoelectric sensor is provided on the support frame. The photoelectric contact piece and the photoelectric sensor cooperate to determine the rotation angle position of the bag frame.

[0014] The beneficial effects of this utility model are:

[0015] (1) Based on the characteristics of the shoulder and mouth of the water sample bag, a bag clamping part is designed so that the water sample bag will not twist when the cap is opened and closed after it is fixed.

[0016] (2) The ring bag rack can hold more than 20 sample bags at a time, enabling the opening and closing mechanism to continuously open and close the cap, and working with the liquid dispensing device to achieve efficient operation;

[0017] (3) The buffer seat can counteract the vertical displacement that occurs when the lid is opened. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the structure of the water sample bag of this utility model;

[0019] Appendix Figure 2 This is a structural diagram of the bag rack;

[0020] Appendix Figure 3 This is a magnified view of a portion of the bag rack;

[0021] Appendix Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0022] Appendix Figure 5 This is a partial enlarged view of the bag holder position of this utility model;

[0023] Appendix Figure 6 This is a magnified view of a section of the lifting and rotating chuck.

[0024] The labels in the attached diagram are as follows:

[0025] 1. Water sample bag; 2. Bag body;

[0026] 3. Bag opening; 4. Flange;

[0027] 5. Shoulder of the bag; 6. Flap;

[0028] 7. Bag rack; 8. Bag card mounting section;

[0029] 9. Cover seat; 10. Narrow slit;

[0030] 11. Turntable; 12. Workbench;

[0031] 13. Capping mechanism; 14. Support frame;

[0032] 15. Turntable; 16. Servo motor;

[0033] 17. Support column; 18. Lifting and rotating chuck;

[0034] 19. Lifting unit; 20. Rotating unit;

[0035] 21. Buffer seat; 22. Gripper;

[0036] 23. Barcode scanner; 24. Photoelectric contact plate;

[0037] 25. Photoelectric sensor. Detailed Implementation

[0038] The specific implementation of the water sample bag opening and closing device of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] See appendix Figure 1 The structure of the water sample bag 1 to be processed in this patent is shown in the figure. The water sample bag 1 includes a bag body 2 and a bag opening 3. A flange 4 is provided at the lower end of the bag opening 3. There is a rigid and flat bag shoulder 5 between the bag opening 3 and the bag body 2. The two sides of the bag shoulder 5 are pointed. A cap 6 is screwed onto the bag opening 3. The capacity of the water sample bag 1 is approximately 250 ml.

[0040] See appendix Figure 2 , 3 The annular bag holder 7 is used to fix the water sample bag 1. An array of bag clamping parts 8 is provided on the circumference of the bag holder 7. The bag clamping parts 8 include cover holders 9 on both sides of the opening and a narrow slit 10 on the inner side of the opening. The cover holders 9 are used to support the flange 4 at the lower end of the bag opening 3, and the narrow slit 10 is used to clamp the bag body 2 below the bag shoulder 5. Since the bag shoulder 5 of the water sample bag 1 has a certain rigidity, when the flange 4 below the bag opening 3 is fixed by the cover holders 9, the bag body 2 is inserted into the narrow slit 10, which can restrict the rotation of the water sample bag 1. Due to the rigidity of the bag shoulder 5, when the bag body is subjected to torque during opening and closing, the bag shoulder 5 will not twist, ensuring the stability when opening and closing the cap.

[0041] The bag holders 8 are densely distributed around the periphery of the bag holder 7. The radius of the bag holder 7 is larger than the width of the water sample bag 1. The number of bag holders 8 is greater than 10. A maximum of 20 water sample bags 1 can be arranged in the figure.

[0042] See appendix Figure 4 The bag holder 7 is mounted on the workbench 12 via a turntable 11. A capping mechanism 13 is set on the workbench 12 on the side of the bag holder 7. The capping mechanism 13 is used to open and close the caps of the water sample bags 1 on the bag holder 7.

[0043] See appendix Figure 5 The turntable 11 includes a support frame 14, on which a turntable 15 is mounted. The bag holder 7 is mounted on the turntable 15. A servo motor 16 is mounted on the support frame 14, which drives the turntable 15 to rotate, thereby causing the bag holder 7 to rotate. A cylindrical outer shell is provided outside the support frame 14 to protect the internal equipment.

[0044] See appendix Figure 6 The capping mechanism 13 includes a support column 17 mounted on the workbench 12, and a lifting and rotating chuck 18 mounted on the support column 17. The turntable 11 controls the rotation of the bag holder 7, and the lifting and rotating chuck 18 opens and closes the caps of the water sample bags 1 of the bag clamping part 8 at the corresponding position.

[0045] The lifting and rotating chuck 18 includes a lifting unit 19 and a rotating unit 20. The lifting unit 19 is mounted on the support column 17, and the rotating unit 20 is connected to the lifting unit 19 via a buffer seat 21. The rotating unit 20 is equipped with grippers 22, which are electrically powered and used to hold the cap 6 of the water sample bag 1. When the cap is opened, vertical displacement occurs, which is absorbed by the buffer seat 21.

[0046] A barcode scanner 23 is installed on the side of the rotating unit 20, with the scanner head facing downwards. A barcode is typically marked on the lid 6. The barcode scanner 23 scans the barcode on the water sample bag 1 to be opened and uploads the label.

[0047] A photoelectric contact piece 24 is installed on the turntable 15, and a photoelectric sensor 25 is installed on the support frame 14. The photoelectric contact piece 24 and the photoelectric sensor 25 cooperate to determine the rotation angle position of the bag holder 7. The application of the photoelectric sensor 25 on the turntable 15 is a common application, and the position status of the turntable 15 is read and controlled by the control unit.

[0048] During operation, the water sample bag 1 containing the water sample is first secured to the bag holder 7. The turntable 11 is then activated, and the water sample bag 1, to be opened, is rotated to below the gripper 22. The lifting and rotating chuck 18 is then driven to open the gripper 22 and descend to the position of the cap 6 on the water sample bag 1. The gripper 22 clamps the cap 6, and by rotating the gripper 22, the water sample bag 1 is opened. After opening, the cap 6 is held in place, and the lifting and rotating chuck 18 rises. A quantitative sample is then removed from the water sample bag 1 using the liquid extraction device. After sample extraction, the lifting and rotating chuck 18 descends, and the gripper 22 rotates in the opposite direction to close the cap 6 on the water sample bag 1.

[0049] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A device for opening and closing a water sample bag cap, characterized in that: The water sample bag includes a bag body and a bag opening. A flange is provided at the lower end of the bag opening. A flat, rigid shoulder is located between the bag opening and the bag body. The two sides of the shoulder are pointed. A cap is screwed onto the bag opening. The cap opening and closing device includes a ring-shaped bag frame. An array of bag clamping parts is provided on the circumference of the bag frame. The bag clamping parts include cap holders on both sides of the opening and a narrow slit on the inner side of the opening. The cap holders are used to support the flange at the lower end of the bag opening. The narrow slit is used to clamp the bag body below the shoulder. The bag frame is mounted on a workbench via a turntable. A capping mechanism is provided on the workbench on the side of the bag frame. The capping mechanism includes a support column on the workbench. A lifting and rotating chuck is provided on the support column. The turntable controls the rotation of the bag frame. The lifting and rotating chuck opens and closes the water sample bags at the corresponding bag clamping parts.

2. The water sample bag opening and closing cover device according to claim 1, characterized in that: The bag clamping parts are densely distributed around the periphery of the bag frame, the radius of the bag frame is larger than the width of the water sample bag, and the number of bag clamping parts is greater than 10.

3. A water sample bag opening and closing cover device according to claim 1 or 2, characterized in that: The turntable includes a support frame, on which a turntable is mounted. The bag holder is mounted on the turntable, and a servo motor is mounted on the support frame. The servo motor drives the turntable to rotate, thereby causing the bag holder to rotate.

4. The water sample bag opening and closing cover device according to claim 1 or 2, characterized in that: The lifting and rotating chuck includes a lifting unit and a rotating unit. The lifting unit is mounted on a support column, and the rotating unit is mounted on the lifting unit. The rotating unit is equipped with grippers for gripping the cap of the water sample bag.

5. The water sample bag opening and closing cover device according to claim 4, characterized in that: The rotating unit is connected to the lifting unit via a buffer seat.

6. The water sample bag opening and closing cover device according to claim 4, characterized in that: A barcode scanner is provided on the side of the rotating unit, with the scanner's recognition head facing downwards.

7. The water sample bag opening and closing cover device according to claim 3, characterized in that: A photoelectric contact plate is installed on the turntable, and a photoelectric sensor is installed on the support frame. The photoelectric contact plate and the photoelectric sensor cooperate to determine the rotation angle position of the bag frame.

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