Automatic packing device for chromatographic column support

Abstract

The present application relates to a kind of automatic filling device of chromatographic column carrier, the device contains closed cabinet and control circuit, the bottom of cabinet is suspended arrangement, guide rail and rack are horizontally fixed in cabinet and mutually parallel, moving frame is hoisted on guide rail, stepper motor is installed in the lower part of moving frame, gear is installed on the rotating shaft of stepper motor, gear and rack are mutually engaged;Carrier storage bin is installed on the upper part of moving frame, the discharge port of carrier storage bin bottom, nozzle respectively with the first, two ends of three-way joint communication, the compressed gas of external input passes through electromagnetic valve and enters the third end of three-way joint;Servo steering wheel is installed in the lower part of moving frame, weighing sensor is installed on the mechanical arm of servo steering wheel, the bottom of carrier transfer dish is connected with the weighing surface of weighing sensor, N photoelectric switches are evenly installed above guide rail, N funnels are evenly installed below carrier transfer dish;The present application improves the working efficiency of filling, also can avoid the influence of carrier on the health of staff.

Description

(I) Technical Field

[0001] This invention relates to a column support packing device, and more particularly to an automatic column support packing device. (II) Background Technology

[0002] Column support, also known as a chromatographic support, is a chemically inert, porous solid particle that provides a large inert surface area, allowing the stationary phase to be uniformly distributed on its surface in a liquid film state. The chromatographic column is the core component of a chromatograph, and the demand for columns is significant when performing oil chromatography. Therefore, the packing of column supports is an important task for production personnel.

[0003] Currently, the packing of chromatographic column supports is generally carried out in an open environment by first manually weighing the support and then manually packing it into the column, which is inefficient. Moreover, the support particles packed into the column are small, which can easily cause the support to float in the air, polluting the environment, harming the respiratory system of operators, and wasting the support. (III) Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic column support packing device, which has a high degree of automation, improves the efficiency of column packing, and avoids the impact of the support on the health of the staff.

[0005] The technical solution of the present invention:

[0006] An automatic column support loading device includes a sealed chassis and control circuitry. The chassis contains guide rails, N photoelectric switches, a moving frame, a stepper motor, gears, a rack, a support storage bin, a T-connector, nozzles, a scoop-shaped support transfer dish, a weighing sensor, a servo motor, and N funnels. The bottom of the chassis is suspended by a chassis support frame, which is fixed to both sides of the chassis bottom. The guide rails and rack are horizontally fixed inside the chassis and are parallel to each other. The two ends of the guide rails and rack face left and right respectively, with the rack located below the guide rails. The moving frame is located between the guide rails and rack and is suspended on the guide rails via a connecting slider. The upper part of the moving frame is fixedly connected to the lower part of the connecting slider. The upper part of the connecting slider is slidably connected to the lower part of the guide rail; the stepper motor is installed at the lower part of the moving frame, and the gear is installed on the rotating shaft of the stepper motor. The gear and rack are positioned correspondingly and mesh with each other. When the stepper motor drives the gear to rotate, the gear will move along the rack, and at the same time drive the moving frame to move along the guide rail; the carrying body storage bin is installed at the upper part of the moving frame. The bottom of the carrying body storage bin has a downward discharge port, which is connected to the first end of the three-way connector. The inlet of the nozzle is connected to the second end of the three-way connector, and the outlet of the nozzle faces downward. Externally input compressed air enters the third end of the three-way connector through a solenoid valve. The compressed air is provided by a gas cylinder or a small air compressor; the servo motor is installed on the moving frame. At the bottom, a servo motor houses a tilting robotic arm. A load cell is mounted on the robotic arm, and the bottom of the transfer vessel is connected to the weighing surface of the load cell. When the robotic arm rotates to its upper limit position, the transfer vessel is placed horizontally, with its bottom directly below the nozzle outlet. When the robotic arm rotates to its lower limit position, the opening side of the transfer vessel tilts downwards. N photoelectric switches are mounted above the guide rail, arranged evenly in a row parallel to the guide rail. A blocking strip extends from the moving frame; as the moving frame moves along the guide rail, the end of the blocking strip passes sequentially between the transmitting and receiving tubes of the N photoelectric switches. N funnels are mounted below the transfer vessel. N funnels are evenly arranged in a row parallel to the guide rail, with the outlets at the bottom of each funnel extending out of the chassis from the bottom. The vertical projection of the transfer vessel falls precisely on the line of the N funnels. As the moving frame moves along the guide rail, the opening of the transfer vessel passes directly above each of the N funnels. The N funnels correspond to the positions of N photoelectric switches. When the end of the shielding strip is between the transmitting and receiving tubes of a photoelectric switch, the opening of the transfer vessel is directly above the funnel corresponding to that photoelectric switch. The control circuit controls the operation of the solenoid valve, the N photoelectric switches, the stepper motor, the weighing sensor, and the servo motor. N is a natural number greater than or equal to 1.

[0007] The automatic column support packing device also includes a support transfer dish vibration motor, a funnel vibration motor, and a spring; the support transfer dish vibration motor is installed on the outer bottom surface of the support transfer dish; the funnel is placed on a funnel support, which is connected to the bottom of the machine box by a spring, and the funnel vibration motor is installed on the funnel support; the control circuit controls the operation of the support transfer dish vibration motor and the funnel vibration motor; N is a natural number greater than or equal to 2.

[0008] Both the carrier transfer dish vibration motor and the funnel vibration motor are miniature vibration motors.

[0009] The funnel support is a horizontally arranged flat plate with N through holes on its upper surface. N funnels are placed in the N through holes respectively. One side of the plate is folded vertically downward to form a folded edge, and the funnel vibration motor is installed on this folded edge. The lower surface of the plate is connected to the boss at the bottom of the chassis through springs. The outlet at the bottom of the funnel passes through the boss and the bottom of the chassis and reaches the outside of the chassis. Springs are provided around each through hole.

[0010] The support storage silo contains two silos, each with a downward-facing discharge port at the bottom. The two discharge ports are connected to the first end of two T-joints, and the inlets of two nozzles are connected to the second end of two T-joints. Externally input compressed air enters the third end of two T-joints through two solenoid valves. The outlets of both nozzles face downwards, and the bottom of the support transfer dish is located directly below the outlets of the two nozzles.

[0011] The two compartments each contain two types of load cells, and different types of load cells and their weights can be selected as needed.

[0012] The mobile frame is an open-front box, with its upper outer surface fixedly connected to the lower surface of the connecting slider. A stepper motor is mounted on the lower inner surface of the box, with its shaft pointing vertically downwards and extending from the bottom of the box. A gear is mounted on the shaft outside the box, positioned in front of the rack, meshing with the front surface of the rack. A storage bin is mounted on the upper outer front side of the box, and a servo motor is mounted on the lower outer front side of the box. A vertical rod extends upwards from the outer rear surface of the box, with its upper part extending beyond the top surface of the box. A shielding strip is mounted on the upper part of the vertical rod. Two solenoid valves are mounted on the outer rear surface of the box. Externally input compressed air enters the inlet of the two solenoid valves through conduits, and the outlets of the two solenoid valves are connected to the third end of two three-way connectors through conduits.

[0013] The connection lines between the control circuit and the two solenoid valves, stepper motor, load cell, servo motor and vibrating motor of the transfer vessel are all placed in a cable chain to facilitate the movement of the enclosure.

[0014] The chassis is equipped with a dust collector, which is installed on the top surface of the chassis. The dust collector can effectively absorb the load material scattered during the transfer process. The top surface of the chassis has a feeding port, which is covered with a cover. When the moving frame moves along the guide rail, the load material storage bin also moves with it. The feeding port is above the movement path of the load material storage bin, and the vertical projection of the feeding port falls exactly on the movement path of the load material storage bin. The upper part of the load material storage bin is open. The front side of the chassis has a transparent sliding door, which allows for real-time observation of the load material during transfer and facilitates equipment maintenance and repair, ensuring the normal operation of the equipment.

[0015] The guide rail and rack are fixed inside the chassis via the upper and lower crossbeams, respectively. Both the upper and lower crossbeams are horizontally arranged and parallel to the guide rail. The upper crossbeam is located above the guide rail, and its left and right ends are fixed to the left and right inner walls of the chassis, respectively. The upper surface of the guide rail is fixedly connected to the lower surface of the upper crossbeam. N photoelectric switches are evenly installed on the rear surface of the upper crossbeam via N fixing seats. The lower crossbeam is located below the rack, and its left and right ends are fixed to the left and right inner walls of the chassis, respectively. The lower surface of the rack is fixedly connected to the upper surface of the lower crossbeam.

[0016] A horizontal support plate is provided between the rear surface of the lower crossbeam and the inner rear wall of the chassis. The vertical lower folded edge on the front side of the support plate is fixedly connected to the rear surface of the lower crossbeam, and the vertical upper folded edge on the rear side of the support plate is fixedly connected to the inner rear wall of the chassis.

[0017] The automatic column support packing device also includes a negative pressure vacuum pump. The outlet at the bottom of the funnel is connected to the inlet of the column, and the end of the column is connected to the suction port of the negative pressure vacuum pump. The negative pressure vacuum pump is installed outside the chassis, which is fixed to a base by a chassis bracket, and the negative pressure vacuum pump is also fixed to the base. The control circuit controls the operation of the negative pressure vacuum pump.

[0018] The chassis bracket consists of two vertical plates on the left and right sides of the bottom of the chassis, which are integrated with the two side plates on the left and right sides of the chassis.

[0019] The weighing sensor is an Ouluda AT85 single-point weighing sensor; the carrier transfer dish is made of polytetrafluoroethylene (PTFE), which reduces the adsorption of the carrier and ensures that the weight of the carrier does not change significantly during transfer. At the same time, the carrier transfer dish is integrally molded with multiple smooth arc transitions inside, reducing the transfer resistance of the carrier and minimizing material loss during the transfer process. The carrier transfer dish vibration motor on the bottom surface of the carrier transfer dish vibrates fully during the transfer of the carrier, which can greatly reduce the adsorption of the carrier to the carrier transfer dish.

[0020] When the automatic column support loading device is in operation, the support must first be loaded into the support storage bin through the feed port. At this point, the support in the storage bin will enter the three-way connector under gravity. The control circuit controls the solenoid valve to open, and compressed air enters the three-way connector. The airflow pushes the support out of the nozzle and into the support transfer dish. The weighing sensor under the support transfer dish collects the signal and determines whether the support weight meets the requirements, controlling the support feed weight. When the support feed weight meets the requirements, the control circuit controls the servo motor's robotic arm to tilt downwards to the lower limit position, and the support in the support transfer dish flows into the funnel. The control circuit then controls the funnel vibration motor to oscillate and activates the negative pressure vacuum pump, collecting the support in the funnel at the outlet at the bottom of the funnel before it is all drawn into the column. A filter device is installed at the end of the column. This filter device allows airflow but prevents the support from passing through, effectively reducing support loss and waste.

[0021] The beneficial effects of this invention are:

[0022] 1. This invention uses compressed air to transfer the support in the support storage bin to the support transfer dish, then uses a weighing sensor to weigh the support. Once the weight meets the requirements, a servo motor transfers the support to N funnels. Finally, the oscillation of the funnel vibration motor and the suction of the negative pressure vacuum pump fill the N chromatographic columns with the support. This invention also uses the cooperation of gears and racks, as well as the precise positioning of N photoelectric switches to achieve one-time automatic filling of N chromatographic columns. Therefore, this invention has a high degree of automation and improves the efficiency of chromatographic column filling.

[0023] 2. The filling process of this invention is carried out in a sealed enclosure without manual operation. This not only effectively reduces the impact of the external environment on the filling process, but also avoids the impact of the carrier on the health of the workers. (iv) Description of the attached drawings

[0024] Figure 1 This is a schematic diagram of an automated column support packing device (without the sliding door installed).

[0025] Figure 2 for Figure 1 A top-view structural diagram;

[0026] Figure 3 for Figure 1 A schematic diagram of the AA cross-sectional structure in the diagram;

[0027] Figure 4 This is a three-dimensional structural diagram of an automated column support packing device. (V) Specific Implementation Examples

[0028] See Figures 1-4In the figure, the automatic column support loading device includes a sealed chassis 1 and a control circuit. The chassis 1 contains guide rails 3, six photoelectric switches 4, a moving frame 29, a stepper motor 5, a gear 6, a rack 7, a support storage bin 8, a three-way connector 9, a nozzle 10, a scoop-shaped support transfer dish 11, a weighing sensor 12, a servo motor 13, and six funnels 14. The bottom of the chassis 1 is suspended by a chassis support 36, which is fixed to both sides of the bottom of the chassis 1. The guide rails 3 and rack 7 are horizontally fixed inside the chassis 1 and are parallel to each other. The two ends of the guide rails 3 and rack 7 face left and right respectively, with the rack 7 located below the guide rails 3. The moving frame 29 is located between the guide rails 3 and rack 7. Between the bars 7, the movable frame 29 is suspended on the guide rail 3 via the connecting slider 23. The upper part of the movable frame 29 is fixedly connected to the lower part of the connecting slider 23, and the upper part of the connecting slider 23 is slidably connected to the lower part of the guide rail 3. The stepper motor 5 is installed on the lower part of the movable frame 29, and the gear 6 is installed on the rotating shaft of the stepper motor 5. The gear 6 and the rack 7 are positioned correspondingly and mesh with each other. When the stepper motor 5 drives the gear 6 to rotate, the gear 6 will move along the rack 7, and at the same time drive the movable frame 29 to move along the guide rail 3. The support storage bin 8 is installed on the upper part of the movable frame 29. The bottom of the support storage bin 8 is provided with a downward discharge port, which is connected to the first end of the three-way connector 9. The nozzle 10 The inlet is connected to the second end of the three-way connector 9, the outlet of the nozzle 10 faces downwards, and the externally input compressed air enters the third end of the three-way connector 9 through the solenoid valve 20. The compressed air is supplied by a gas cylinder. The servo motor 13 is installed on the lower part of the moving frame 29. The servo motor 13 is equipped with a mechanical arm that can rotate up and down. The load cell 12 is installed on the mechanical arm, and the bottom of the load transfer dish 11 is connected to the weighing surface of the load cell 12. When the mechanical arm rotates to the upper limit position, the load transfer dish 11 is placed horizontally, and the bottom of the load transfer dish 11 is directly below the outlet of the nozzle 10. When the mechanical arm rotates to the lower limit position, the opening side of the load transfer dish 11 tilts downwards. Six photoelectric switches 4 are installed above the guide rail 3, and Six photoelectric switches 4 are evenly arranged in a row parallel to the guide rail 3. A shielding strip 21 extends from the moving frame 29. When the moving frame 29 moves along the guide rail 3, the end of the shielding strip 21 passes between the transmitting tube and receiving tube of the six photoelectric switches 4 in sequence. Six funnels 14 are installed below the carrier transfer dish 11, and the six funnels 14 are evenly arranged in a row parallel to the guide rail 3. The outlets at the bottom of the six funnels 14 all pass through the bottom of the chassis 1 to the outside of the chassis 1. The vertical projection of the carrier transfer dish 11 falls exactly on the arrangement line of the six funnels 14. When the moving frame 29 moves along the guide rail 3, the opening side of the carrier transfer dish 11 passes directly above the six funnels 14 in sequence.The six funnels 14 correspond to the positions of the six photoelectric switches 4. When the end of the shielding strip 21 is located between the transmitting and receiving tubes of a photoelectric switch 4, the opening side of the transfer vessel 11 is directly above the funnel 14 corresponding to that photoelectric switch 4. The control circuit controls the operation of the solenoid valve 20, the six photoelectric switches 4, the stepper motor 5, the weighing sensor 12, and the servo motor 13.

[0029] The automatic column support packing device also includes a support transfer dish vibration motor 15, a funnel vibration motor 16, and a spring 18; the support transfer dish vibration motor 15 is installed on the outer bottom surface of the support transfer dish 11; the funnel 14 is placed on the funnel support 17, the funnel support 17 is connected to the bottom of the housing 1 by the spring 18, and the funnel vibration motor 16 is installed on the funnel support 17; the control circuit controls the operation of the support transfer dish vibration motor 15 and the funnel vibration motor 16.

[0030] Both the carrier transfer dish vibration motor 15 and the funnel vibration motor 16 are miniature vibration motors.

[0031] The funnel support 17 is a horizontally arranged flat plate with 6 through holes on its upper surface. The 6 funnels 14 are placed in the 6 through holes respectively. One side of the flat plate is folded vertically downward to form a folded edge, and the funnel vibration motor 16 is installed on the folded edge. The lower surface of the flat plate is connected to the boss 19 at the bottom of the housing 1 by springs 18. The outlet at the bottom of the funnel 14 passes through the boss 19 and the bottom of the housing 1 and reaches the outside of the housing 1. Springs 18 are provided around each through hole.

[0032] The support storage bin 8 contains two bins, each with a downward-facing discharge port at the bottom. The two discharge ports are connected to the first end of two three-way connectors 9, and the inlets of two nozzles 10 are connected to the second end of two three-way connectors 9. Externally input compressed air enters the third end of two three-way connectors 9 through two solenoid valves 20. The outlets of the two nozzles 10 are both downward-facing, and the bottom of the support transfer dish 11 is located directly below the outlets of the two nozzles 10.

[0033] The two compartments each contain two types of load cells, and different types of load cells and their weights can be selected as needed.

[0034] The movable frame 29 is a box with an open front. The upper outer surface of the box is fixedly connected to the lower surface of the connecting slider 23. The stepper motor 5 is installed on the lower inner surface of the box. The shaft of the stepper motor 5 is vertically downward and passes through the bottom of the box. The gear 6 is installed on the shaft outside the box. The gear 6 is located in front of the rack 7 and meshes with the front surface of the rack 7. The carrying storage bin 8 is installed on the upper outer front side of the box. The servo motor 13 is installed on the lower outer front side of the box. A vertical rod 22 extends upward from the outer rear surface of the box. The upper part of the vertical rod 22 extends out of the top surface of the box. A shielding strip 21 is installed on the upper part of the vertical rod 22. Two solenoid valves 20 are installed on the outer rear surface of the box. Externally input compressed air enters the air inlet of the two solenoid valves 20 through a conduit. The air outlet of the two solenoid valves 20 is connected to the third end of the two three-way connectors 9 through a conduit 28.

[0035] The connection lines between the control circuit and the two solenoid valves 20, the stepper motor 5, the load cell 12, the servo motor 13 and the vibration motor 15 of the carrier transfer dish are all placed in a cable drag chain to facilitate the movement of the box.

[0036] The chassis 1 is equipped with a dust collector 30, which is installed on the top surface of the chassis 1. The dust collector 30 can effectively absorb the load material scattered during the transfer of the load material. The top surface of the chassis 1 has a feeding port, which is covered with a cover 31. When the moving frame 29 moves along the guide rail 3, the load material storage bin 8 also moves. The feeding port is above the moving path of the load material storage bin 8, and the vertical projection of the feeding port falls exactly on the moving path of the load material storage bin 8. The upper part of the load material storage bin 8 is open. The front side of the chassis 1 is equipped with a transparent sliding door 32, which allows for real-time observation of the load material during the transfer of the load material and facilitates the maintenance and repair of the equipment, ensuring the normal operation of the equipment.

[0037] The guide rail 3 and the rack 7 are fixed inside the chassis 1 by the upper crossbeam 25 and the lower crossbeam 26, respectively. The upper crossbeam 25 and the lower crossbeam 26 are both horizontally arranged and parallel to the guide rail 3. The upper crossbeam 25 is located above the guide rail 3. The left and right ends of the upper crossbeam 25 are fixed to the left and right inner walls of the chassis 1, respectively. The upper surface of the guide rail 3 is fixedly connected to the lower surface of the upper crossbeam 25. Six photoelectric switches 4 are evenly installed on the rear surface of the upper crossbeam 25 by six fixing seats 24. The lower crossbeam 26 is located below the rack 7. The left and right ends of the lower crossbeam 26 are fixed to the left and right inner walls of the chassis 1, respectively. The lower surface of the rack 7 is fixedly connected to the upper surface of the lower crossbeam 26.

[0038] A horizontal support plate 27 is provided between the rear surface of the lower crossbeam 26 and the inner rear wall of the chassis 1. The vertical lower folded edge on the front side of the support plate 27 is fixedly connected to the rear surface of the lower crossbeam 26, and the vertical upper folded edge on the rear side of the support plate 27 is fixedly connected to the inner rear wall of the chassis 1.

[0039] The automatic column support packing device also includes a negative pressure vacuum pump 2. The outlet at the bottom of the funnel 14 is connected to the inlet of the chromatographic column, and the end of the chromatographic column is connected to the suction port 34 of the negative pressure vacuum pump 2. The negative pressure vacuum pump 2 is installed outside the chassis 1. The chassis 1 is fixed on a base 35 by a chassis bracket 36, and the negative pressure vacuum pump 2 is also fixed on the base 35. The control circuit controls the operation of the negative pressure vacuum pump 2.

[0040] The chassis bracket 36 consists of two vertical plates on the left and right sides of the bottom of the chassis 1. The two vertical plates are integrated with the two side plates on the left and right sides of the chassis 1.

[0041] The weighing sensor 12 is an Euda AT85 single-point weighing sensor; the carrier transfer dish 11 is made of polytetrafluoroethylene (PTFE). PTFE can reduce the adsorption of the carrier, ensuring that the weight of the carrier does not change significantly during transfer. At the same time, the carrier transfer dish 11 is integrally formed with multiple smooth arc transitions inside, reducing the transfer resistance of the carrier and minimizing material loss during the transfer process. The carrier transfer dish vibration motor 15 on the outer bottom surface of the carrier transfer dish 11 vibrates fully during carrier transfer, which can greatly reduce the adsorption of the carrier on the carrier transfer dish 11.

[0042] When the automatic column support loading device is in operation, the support must first be loaded into the support storage bin 8 through the feed port. At this time, the support in the support storage bin 8 will enter the three-way connector 9 by gravity. The control circuit controls the solenoid valve 20 to open, and compressed air enters the three-way connector 9. The airflow pushes the support out of the nozzle 10 and into the support transfer dish 11. The weighing sensor 12 under the support transfer dish 11 collects the signal and judges whether the weight of the support meets the requirements, and controls the weight of the support feed. When the weight of the support feed meets the requirements, the control circuit controls the mechanical arm of the servo motor 13 to rotate downward to the lower limit position, and the support in the support transfer dish 11 flows into the funnel 14. The control circuit then controls the funnel vibration motor 16 to oscillate and the negative pressure vacuum pump 2 to work, so that the support in the funnel 14 is collected in the outlet at the bottom of the funnel 14 and then completely sucked into the chromatographic column. The end of the chromatographic column is equipped with a filter device, which allows the airflow to pass through but not the support, which can effectively reduce the loss and waste of the support.

Claims

1. An automatic column support packing device, characterized in that: It contains a sealed chassis and control circuit. Inside the chassis are guide rails, N photoelectric switches, a moving frame, a stepper motor, gears, racks, a support storage bin, a three-way connector, nozzles, a scoop-shaped support transfer dish, a weighing sensor, a servo motor, and N funnels. The bottom of the chassis is suspended by a chassis bracket, which is fixed to both sides of the chassis bottom. The guide rail and rack are both horizontally fixed inside the chassis and are parallel to each other. The two ends of the guide rail and rack face to the left and right respectively. The rack is located below the guide rail. The moving frame is located between the guide rail and the rack. The moving frame is suspended on the guide rail by a connecting slider. The upper part of the moving frame is fixedly connected to the lower part of the connecting slider, and the upper part of the connecting slider is slidably connected to the lower part of the guide rail. The stepper motor is installed at the lower part of the moving frame, and the gear is installed on the shaft of the stepper motor. The gear and rack are positioned correspondingly and mesh with each other. The support storage bin is installed on the upper part of the mobile frame and contains two bins. The bottom of each bin has two downward discharge ports. The two discharge ports are connected to the first end of two three-way connectors. The inlets of the two nozzles are connected to the second end of the two three-way connectors. Externally input compressed air enters the third end of the two three-way connectors through two solenoid valves. The outlets of the two nozzles are both downward. The bottom of the support transfer dish is located directly below the outlets of the two nozzles. A servo motor is installed at the bottom of the moving frame. The servo motor has a mechanical arm that can rotate up and down. A load cell is installed on the mechanical arm. The bottom of the transfer vessel is connected to the weighing surface of the load cell. The transfer vessel is made of polytetrafluoroethylene. When the mechanical arm rotates to the upper limit position, the transfer vessel is placed horizontally, and the bottom of the transfer vessel is directly below the nozzle outlet. When the mechanical arm rotates to the lower limit position, the opening side of the transfer vessel tilts downward. N photoelectric switches are installed above the guide rail, and the N photoelectric switches are evenly arranged in a row in a direction parallel to the guide rail. A blocking strip extends from the moving frame. When the moving frame moves along the guide rail, the end of the blocking strip passes through the transmitting tube and receiving tube of the N photoelectric switches in sequence. N funnels are installed below the carrier transfer dish, and the N funnels are evenly arranged in a row in a direction parallel to the guide rail. The outlets of the N funnels at the bottom of the machine extend out of the machine from the bottom of the machine. The vertical projection of the carrier transfer dish falls exactly on the line of arrangement of the N funnels. When the moving frame moves along the guide rail, the opening side of the carrier transfer dish passes directly above the N funnels in sequence. The N funnels correspond to the positions of the N photoelectric switches respectively. When the end of the shielding strip is located between the transmitting tube and the receiving tube of a photoelectric switch, the opening side of the carrier transfer dish is exactly above the funnel corresponding to that photoelectric switch. The control circuit controls the operation of the solenoid valve, N photoelectric switches, stepper motor, weighing sensor and servo motor; N is a natural number greater than or equal to 1; When the above-mentioned automatic column support loading device is working, the support is first loaded into the support storage bin through the feed port. At this time, the support in the support storage bin will enter the three-way connector by gravity. The control circuit controls the solenoid valve to open, and compressed air enters the three-way connector. The airflow pushes the support out of the nozzle and flows into the support transfer dish. The weighing sensor under the support transfer dish collects the signal and judges whether the weight of the support meets the requirements, and controls the weight of the support feed. When the weight of the support feed meets the requirements, the control circuit controls the servo motor to rotate the robotic arm downward to the lower limit position, and the support in the support transfer dish flows into the funnel. The control circuit then controls the funnel vibration motor to oscillate and makes the negative pressure vacuum pump work, so that the support in the funnel is collected in the outlet at the bottom of the funnel and then completely sucked into the chromatographic column. The end of the chromatographic column is equipped with a filter device, which allows the airflow to pass through but prevents the support from passing through.

2. The automatic column support packing device according to claim 1, characterized in that: It also includes a carrier transfer dish vibration motor, a funnel vibration motor, and a spring; the carrier transfer dish vibration motor is installed on the outer bottom surface of the carrier transfer dish; the funnel is placed on a funnel support, the funnel support is connected to the bottom of the machine box by a spring, and the funnel vibration motor is installed on the funnel support; the control circuit controls the operation of the carrier transfer dish vibration motor and the funnel vibration motor; N is a natural number greater than or equal to 2.

3. The automatic column support packing device according to claim 2, characterized in that: The funnel support is a horizontally arranged flat plate with N through holes on its upper surface. N funnels are placed in the N through holes respectively. One side of the flat plate is folded vertically downward to form a folded edge, and the funnel vibration motor is installed on this folded edge. The lower surface of the flat plate is connected to the bottom of the machine box by springs, and springs are provided around each through hole.

4. The automatic column support packing device according to claim 1, characterized in that: The mobile frame is a box with an open front. The upper outer surface of the box is fixedly connected to the lower surface of the connecting slider. A stepper motor is installed on the lower inner surface of the box. The shaft of the stepper motor is vertically downward and extends from the bottom of the box. A gear is installed on the shaft outside the box. The gear is located in front of the rack and meshes with the front surface of the rack. A storage bin is installed on the upper outer front side of the box. A servo motor is installed on the lower outer front side of the box. A vertical rod extends upward from the outer rear surface of the box. The upper part of the vertical rod extends beyond the top surface of the box. A shielding strip is installed on the upper part of the vertical rod. Two solenoid valves are installed on the outer rear surface of the box. Externally input compressed air enters the air inlet of the two solenoid valves through a conduit. The air outlet of the two solenoid valves is connected to the third end of two three-way connectors through conduits.

5. The automatic column support packing device according to claim 1, characterized in that: The chassis is equipped with a dust collector; the top surface of the chassis has a feeding port covered with a cover. When the moving frame moves along the guide rail, the support storage bin also moves. The feeding port is above the moving path of the support storage bin, and the vertical projection of the feeding port falls exactly on the moving path of the support storage bin. The upper part of the support storage bin is open; a door is provided on the side of the chassis.

6. The automatic column support packing device according to claim 1, characterized in that: The guide rail and rack are fixed inside the chassis by the upper and lower crossbeams, respectively. Both the upper and lower crossbeams are horizontally arranged and parallel to the guide rail. The upper crossbeam is located above the guide rail, and its left and right ends are fixed to the left and right inner walls of the chassis, respectively. The upper surface of the guide rail is fixedly connected to the lower surface of the upper crossbeam. N photoelectric switches are evenly installed on the rear surface of the upper crossbeam. The lower crossbeam is located below the rack, and its left and right ends are fixed to the left and right inner walls of the chassis, respectively. The lower surface of the rack is fixedly connected to the upper surface of the lower crossbeam.

7. The automatic column support packing device according to claim 6, characterized in that: A horizontal support plate is provided between the rear surface of the lower crossbeam and the inner rear wall of the chassis. The vertical folded edge on the front side of the support plate is fixedly connected to the rear surface of the lower crossbeam, and the vertical folded edge on the rear side of the support plate is fixedly connected to the inner rear wall of the chassis.

8. The automatic column support packing device according to claim 1, characterized in that: It also contains a negative pressure vacuum pump. The outlet at the bottom of the funnel is connected to the inlet of the chromatographic column, and the end of the chromatographic column is connected to the suction port of the negative pressure vacuum pump. The negative pressure vacuum pump is installed outside the chassis, and the control circuit controls the operation of the negative pressure vacuum pump.

9. The automatic column support packing device according to claim 1, characterized in that: The weighing sensor is an Ordos AT85 single-point weighing sensor.

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