Automatic cleaning and filling instrument for reaction tube of elemental analyzer

Abstract

The invention discloses an element analyzer reaction tube automatic cleaning and filling instrument, and particularly relates to the technical field of reaction tube automatic cleaning and filling, the element analyzer reaction tube automatic cleaning and filling instrument comprises an operation table, a reaction tube cleaning station and a reaction tube filling station which are arranged above the operation table, and a waste bin arranged below an operation table frame, the weighing sensor is arranged in the reaction tube cleaning station, the pressure sensor is arranged in the reaction tube filling station, and the vacuum pump is arranged in the waste bin; the weighing sensor and the pressure sensor are connected with a control module through signals, and the control module controls the power load rate of the vacuum pump according to the residue weight, detected by the weighing sensor, of the inner wall of the reaction tube and whether the pressure sensor detects the bottom surface pressure increase of the vibration table or not. Cleanness control over the reaction tube cleaning and filling process is achieved, and therefore the reaction tube cleaning effect and the reaction tube filling precision are ensured.

Description

Technical Field

[0001] This invention relates to the field of automatic cleaning and filling technology for reaction tubes, and more specifically, to an automatic cleaning and filling instrument for reaction tubes of elemental analyzers. Background Technology

[0002] Elemental analyzers are the core equipment for analyzing the isotopic composition of carbon, hydrogen, nitrogen, oxygen, etc. in substances. Their analytical accuracy and reliability directly depend on the conversion efficiency of the sample in the reaction tube, which is the core consumable component of the elemental analyzer.

[0003] As the reaction tube is analyzed, residue will form on the inner wall of the tube. The inner wall of the reaction tube needs to be cleaned before filling. Currently, both cleaning and filling of the reaction tube are done manually, which results in low efficiency, difficulty in ensuring the cleaning effect, and difficulty in controlling the filling accuracy.

[0004] To address the above problems, this invention proposes a solution. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide an automatic cleaning and filling instrument for the reaction tubes of an elemental analyzer, which solves the problems mentioned in the background art by adding pressure sensors and weighing sensors to automatically adjust the power of the vacuum pump.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic cleaning and filling device for reaction tubes of an elemental analyzer includes an operating table with an operating table frame below it. The device includes a reaction tube cleaning station and a reaction tube filling station located above the operating table, a waste bin located below the operating table frame, a weighing device and cleaning clamp located in the reaction tube cleaning station, a weighing sensor located in the weighing device, a vibration table located in the reaction tube filling station, a pressure sensor located on the bottom surface of the vibration table, and a vacuum pump located in the waste bin. The weighing sensor and pressure sensor are connected to a control module via signals. The control module controls the power load rate of the vacuum pump based on the weight of the residue on the inner wall of the reaction tube detected by the weighing sensor and whether the pressure sensor detects an increase in pressure on the bottom surface of the vibration table.

[0007] In a preferred embodiment, the reaction tube cleaning station is further provided with a reaction tube cleaning chamber frame, a cleaning robotic arm, a cleaning head support, a cleaning drill bit, and a vacuum suction pipe interface. The cleaning head support is located on the inner left side of the reaction tube cleaning chamber frame, and the cleaning robotic arm is located on the inner right side of the reaction tube cleaning chamber frame. The cleaning head support is equipped with cleaning heads of various specifications and models inside.

[0008] In a preferred embodiment, the reaction tube filling station is further provided with a reaction tube filling chamber frame, a reaction tube fixing bracket, a laser rangefinder, and two interfaces for a vacuum suction pipe. The reaction tube fixing bracket is fixed inside the vibration table, the two interfaces for the vacuum suction pipe are located at the four corners of the bottom of the vibration table, and the laser rangefinder is installed on the inner surface of the reaction tube filling chamber frame directly above the vibration table.

[0009] In a preferred embodiment, the operating table is further equipped with a reaction tube identification station, a reaction tube storage room, a drug storage room, a reaction tube temporary storage room, and a central robotic arm.

[0010] In a preferred embodiment, the reaction tube storage room is equipped with a reaction tube storage rack, the drug storage room is equipped with a drug cabinet and a filling head support, the filling head support contains various types of filling heads required for filling drugs, and the reaction tube temporary storage room is equipped with a reaction tube temporary storage rack. After the reaction tubes are cleaned and filled, the central robotic arm moves the reaction tubes to the reaction tube temporary storage room for storage.

[0011] In a preferred embodiment, the waste bin is further equipped with a three-way valve, a waste collection box, and a vacuum suction main pipe. The inlet end of the three-way valve is divided into an inlet connector one and an inlet connector two. The vacuum pump is installed on the upper surface of the waste collection box. One end of the vacuum suction main pipe is connected to the vacuum pump, and the other end is connected to the three-way valve. When the weighing sensor detects an increase in the weight of the cleaning clamp, inlet connector one is opened. When the pressure sensor detects that the pressure on the bottom surface of the vibration table is greater than zero, inlet connector two is opened.

[0012] In a preferred embodiment, the inlet connector one and inlet connector two of the three-way valve are respectively connected to the interface of vacuum suction pipe one below the reaction tube cleaning station and the interface of vacuum suction pipe two below the reaction tube filling station via vacuum suction pipe one and vacuum suction pipe two, respectively.

[0013] In a preferred embodiment, the control module includes: a weight detection unit for collecting the weight of the cleaning chuck detected by a weighing sensor; a pressure detection unit for collecting the pressure on the bottom surface of the vibration table detected by a pressure sensor; a data processing unit, wherein the weight detection unit transmits the weight of the cleaning chuck detected by the weighing sensor to the data processing unit, and the pressure detection unit transmits the pressure on the bottom surface of the vibration table detected by the pressure sensor to the data processing unit; the data processing unit comprehensively calculates the power load rate of the vacuum pump based on the increase in the weight of the cleaning chuck and whether the pressure on the bottom surface of the vibration table increases, thereby comprehensively calculating the power of the vacuum pump and determining when to open the inlet connector one and inlet connector two of the three-way valve, to ensure that the residue in the reaction tube during the cleaning process and the chemicals spilled during the filling process are cleaned and collected in a timely manner, ensuring that the cleaning effect of the reaction tube meets the requirements, and ensuring the cleanliness of the reaction tube during the cleaning process; and a control unit, wherein the control unit controls the power of the vacuum pump and the opening and closing of the inlet connector one and inlet connector two of the three-way valve based on the analysis results of the data processing unit.

[0014] In a preferred embodiment, the pressure sensor can be installed at any position on the bottom surface of the vibration table. The number of pressure sensors can be increased according to the size of the vibration table. When any pressure sensor detects an increase in pressure, it indicates that medicine has spilled inside the vibration table.

[0015] In a preferred embodiment, the load cell is mounted on the surface of the weighing device, and the cleaning clamp is hinged to the surface of the weighing device.

[0016] This invention enables simultaneous vacuum cleaning of the reaction tube cleaning station and the reaction tube filling station by setting up a vacuum pump and a three-way valve. By setting up weighing and pressure sensors, the power load rate of the vacuum pump can be automatically adjusted according to the weight of the residue on the inner wall of the reaction tube and whether the medicine is spilled during the reaction tube filling process. This ensures that the residue and spilled medicine generated during the reaction tube cleaning and filling process are cleaned up in a timely manner, avoiding any impact on the reaction tube cleaning and filling process, and increasing the service life of the vacuum pump while meeting the vacuum cleaning requirements.

[0017] This invention uses a control module to determine when to adjust the power load rate of the vacuum pump to meet the cleanliness requirements during the cleaning and filling process of the reaction tube. This ensures that the cleanliness of the inner wall of the reaction tube meets the requirements, avoids the impact of spilled reagents during the filling process, thereby improving the filling accuracy of the reaction tube, improving the accuracy of elemental analysis results, and reducing the risk of elemental analyzer malfunction. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings; Figure 1 This invention provides an automatic cleaning and filling device for reaction tubes of elemental analyzers. Figure 2 This is a structural diagram of the operating table frame of the present invention; Figure 3 This is a schematic diagram of the reaction tube identification station structure of the present invention; Figure 4 This is a schematic diagram of the reaction tubing structure of the present invention; Figure 5 This is a schematic diagram of the reaction tube cleaning station mechanism of the present invention; Figure 6 This is a schematic diagram of the reaction tube filling station structure of the present invention; Figure 7 This is a schematic diagram of the vibration table mechanism of the present invention; Figure 8 This is a schematic diagram of the drug storage structure of the present invention; Figure 9 This is a schematic diagram of the reaction tube temporary storage structure of the present invention; Figure 10 This is a schematic diagram of the waste bin and pipeline structure of the present invention; Figure 11 This is a flowchart of the automatic cleaning and filling device for the reaction tube of the elemental analyzer of the present invention.

[0019] In the diagram: 100, Operating platform; 101, Operating platform frame; 200, Reaction tube identification station; 201, Reaction tube identification chamber frame; 202, Reaction tube support; 203, Reaction tube identification chamber door; 204, Reduction tube placement area; 205, Combustion tube placement area; 206, Pyrolysis tube placement area; 300, Reaction tube storage area; 301, Reaction tube storage frame; 302, Reaction tube storage rack; 303, Reaction tube storage door; 304, Reduction tube storage area; 305, Combustion tube storage area; 306, Pyrolysis tube storage area; 400, Reaction tube cleaning station; 401, Reaction tube cleaning chamber frame; 402, Cleaning robotic arm; 403, Cleaning chuck; 404, Cleaning head support; 405, Weighing device; 406, Weighing sensor; 407, Vacuum suction pipe interface; 408, Cleaning drill bit; 500, Reaction tube loading. Workstations; 501. Reaction tube filling bin frame; 502. Vibration table; 503. Reaction tube fixing bracket; 504. Vacuum dust collection pipe interface 2; 505. Pressure sensor; 506. Laser rangefinder; 600. Medicine storage; 601. Medicine storage frame; 602. Medicine cabinet; 603. Filling head bracket; 604. Filling head; 700. Reaction tube temporary storage bin; 701. Reaction tube temporary storage bin frame; 702. Reaction tube temporary storage rack; 703. Reduction tube temporary storage area; 704. Combustion tube temporary storage area; 705. Pyrolysis tube temporary storage area; 800. Waste bin; 801. Vacuum pump; 802. Waste collection box; 803. Vacuum dust collection main pipe; 804. Three-way valve; 805. Inlet connector 1; 806. Inlet connector 2; 807. Vacuum dust collection pipe 1; 808. Vacuum dust collection pipe 2; 900. Central robotic arm. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, referring to Figures 1 to 10As shown, the elemental analyzer reaction tube automatic cleaning and filling instrument includes an operating table (100). The operating table (100) is arranged in a counter-clockwise direction with a reaction tube identification station (200), a reaction tube storage unit (300), a reaction tube cleaning station (400), a reaction tube filling station (500), a reagent storage unit (600), and a reaction tube temporary storage unit (700). The central robotic arm (900) is located at the center of the operating table (100). The operating table (100) is fixed to the upper surface of the operating table frame (101). The waste bin (800) is located below the reaction tube cleaning station (400), and the top of the waste bin (800) is fixed to the bottom surface of the operating table frame (101). The reaction tube identification station (200) is located at the center of the operating table (100). The front of the workbench (100) is convenient for users to place reaction tubes to be cleaned and filled. The reaction tube identification station (200) is equipped with a reaction tube holder (202) suitable for various specifications and types of reaction tubes. Before use, users need to enter the specifications, diameter, weight, etc. of the various specifications of reaction tubes to be used into the control system in advance. When using, the reaction tubes need to be accurately placed into the reaction tube holder (202) that is compatible with the reaction tubes. Then, the corresponding specification and model of reaction tube cleaning and filling program is selected on the control screen. The central robotic arm (900) will move the gripper of the reaction tube to the reaction tube cleaning station (400). The reaction tube cleaning station (400) is equipped with a cleaning chuck (403), a cleaning robotic arm (402), and a cleaning head bracket (403). 404) and various specifications of high-strength drill bits and flexible brush heads. The cleaning chuck (403) is installed on the weighing device (405). When the central robotic arm (900) moves the reaction tube to the reaction tube cleaning station (400), the cleaning chuck (403) clamps the reaction tube. The cleaning chuck (403) is installed on the weighing device (405). The weighing device (405) is equipped with a weighing sensor (406). When the weighing sensor (406) detects an increase in the weight of the cleaning chuck (403), it indicates that the reaction tube cleaning station (400) will perform reaction tube cleaning operations. The control system will start the vacuum pump (801) to the power load rate corresponding to the fouling rate of the reaction tube to collect the residue to the waste. Waste is collected and processed in the waste collection box (802) in the silo (800), and the inlet connector (805) of the three-way valve (804) is activated simultaneously. The cleaning robot arm (402) changes to different cleaning drill bits (408) according to the reaction tube specifications selected by the user to perform reaction tube cleaning. When the weighing sensor (406) detects that the weight of the cleaning chuck (403) has decreased to the sum of the initial weight and the weight of the reaction tube, it indicates that the reaction tube cleaning is complete. The central robot arm (900) moves the reaction tube to the reaction tube loading station (500), and then the central robot arm (900) transfers the next reaction tube to be cleaned to the reaction tube cleaning station (400) for cleaning. After the cleaning chuck (403) clamps the reaction tube,The central robotic arm (900) moves to the drug storage (600), replaces the corresponding loading head (604), and sequentially retrieves the drugs and moves them to the reaction tube loading station (500) for loading. Each layer of the reaction tube must be compacted during loading. The next layer of drugs can only be loaded after the laser rangefinder (506) detects that the loading height meets the preset height. If the pressure sensor (505) on the bottom of the vibration table (502) detects a pressure greater than zero during loading, it indicates that drugs have spilled during the reaction tube loading process. The control system controls the vacuum pump (801) to adjust the power load rate and open the inlet connector two (806) of the three-way valve (804) to clean up the spilled drugs. The reaction tubes are collected and centrally processed in the waste bin (800). After the reaction tubes are filled in layers and the laser rangefinder (506) detects that the height of each layer is qualified, the central robotic arm (900) moves the filled reaction tubes to the reaction tube storage rack (702) in the reaction tube storage warehouse (700) for storage. The central robotic arm (900) can then transfer the next reaction tube to the reaction tube filling station (500) and return to the reaction tube identification station (200) to move the next reaction tube to the reaction tube cleaning station (400) for cleaning. After the cleaning chuck (403) clamps the reaction tube, the central robotic arm (900) can perform the reaction tube filling operation. This cycle continues until all the reaction tubes placed by the user for cleaning and filling have been cleaned and filled.

[0022] When the reaction tube cleaning and filling operations of the elemental analyzer reaction tube automatic cleaning and filling instrument are performed simultaneously, when the weighing sensor (406) detects an increase in the weight of the cleaning chuck (403), the data processing unit will calculate the fouling rate of the reaction tube; the pressure sensor (505) detects whether there is an increase in pressure in the vibration table (502), and comprehensively controls the power load rate of the vacuum pump (801) and the opening and closing of the inlet connector one (805) and inlet connector two (806) of the three-way valve (804).

[0023] Furthermore, if the user pre-places various specifications and models of reaction tubes in the reaction tube storage (300), and the user needs to directly fill the reaction tubes without cleaning them, the user needs to select the type and specification of the reaction tubes to be filled on the control panel. The central robotic arm (900) will directly take out the corresponding specifications and models of reaction tubes from the reaction tube storage (300) for filling. If the pressure sensor (505) detects a pressure greater than zero during the filling process, it indicates that the drug has spilled during the filling process. The control system will then control the vacuum pump (801). Adjusting the power load rate to open the inlet connector 2 (806) of the three-way valve (804) to clean up the spilled medicine. The spilled medicine is collected in the waste bin (800) for centralized treatment. After the reaction tube is filled in layers and the laser rangefinder (506) detects that the height of each layer is qualified, the central robotic arm (900) moves the filled reaction tube to the reaction tube storage rack (702) in the reaction tube storage warehouse (700) for storage. Then, the reaction tube in the reaction tube warehouse (300) can be moved to the reaction tube filling station (500) to continue the filling operation.

[0024] like Figures 1 to 3 As shown, the reaction tube identification station (200) is set on the front of the workbench and consists of an external reaction tube identification chamber frame (201) and an internal reaction tube support (202). The front of the reaction tube identification chamber frame (201) is equipped with a manually opened reaction tube identification chamber door (203). The reaction tube support (202) is divided into three layers, each layer with built-in vertical reserved holes suitable for various types and specifications of reaction tubes. From the inside to the outside, they are the reduction tube placement area (204), the combustion tube placement area (205), and the pyrolysis tube placement area (206). Before use, the user needs to input the specifications, models, and standard weights of the various reaction tubes to be cleaned and filled into the system. When using, the reaction tubes to be cleaned and filled are placed into the reaction tube support (202), and the corresponding specification and model of the reaction tubes are selected for cleaning and filling.

[0025] like Figures 1 to 4 As shown, the reaction tube storage (300) is located to the right of the reaction tube identification station (200). It consists of an external reaction tube storage frame (301), a reaction tube storage door (303), and an internal reaction tube storage rack (302). From the inside out, the storage areas are: reduction tube storage area (304), combustion tube storage area (305), and pyrolysis tube storage area (306). The reaction tube storage rack (302) has reserved holes for various specifications and models of reaction tubes. The user should place sufficient reaction tubes of various specifications and models in the reaction tube storage rack (302) in advance. When the user does not need to clean the reaction tubes and directly selects the reaction tube filling program, the central robotic arm (900) will take out the reaction tube type selected by the user from the reaction tube storage (300) and directly run it to the reaction tube filling station (500).

[0026] like Figures 1 to 5 As shown, the reaction tube cleaning station (400) is located on the right side of the reaction tube storage (300). It consists of an external reaction tube cleaning chamber frame (401) and an internal cleaning robotic arm (402), cleaning chuck (403), cleaning head support (404), and various specifications of high-strength drill bits and flexible brush heads placed in the cleaning head support (404). The bottom surface is provided with a vacuum suction pipe interface (407), which can transport the powdery residue cleaned from the reaction tube to the waste bin (800). A weighing device (405) is provided on the side. The weighing device (405) contains... A weighing sensor (406) is installed, and the bottom end of the cleaning chuck (403) is hinged to the surface of the weighing device (405). When the central robotic arm (900) transfers the reaction tube to the cleaning chuck (403) and clamps it, the weighing device (405) measures the increase in the neutral position of the cleaning chuck (403), which is the weight of the reaction tube and the impurities on the inner wall of the reaction tube. The weight of the impurities on the inner wall of the reaction tube can be calculated based on the standard weight of the reaction tube of this specification input by the user. After the cleaning robotic arm (402) replaces the cleaning drill bit (408) with the one that is compatible with the specifications and model of the reaction tube, the cleaning operation can be carried out.

[0027] like Figures 1 to 7 As shown, the reaction tube filling station (500) is located to the right of the reaction tube cleaning station (400), and consists of an external reaction tube filling chamber frame (501) and a vibration table (502). The vibration table (502) is located at the bottom of the reaction tube filling chamber. The vibration table (502) is equipped with a reaction tube fixing bracket (503) that can accommodate various specifications and types of reaction tubes. A pressure sensor (505) is installed at the bottom of the vibration table (502). When filling material falls, the pressure sensor (505) detects an increase in pressure, which indicates that... During the filling and vibration of the reaction tube, some filling material is spilled. The bottom corner of the vibration table (502) is equipped with four vacuum suction pipe interfaces (504), which are connected to vacuum suction pipes (808) to clean up the filling material spilled during the filling and vibration of the reaction tube. A laser rangefinder (506) is installed inside the reaction tube filling chamber frame (501) above the vibration table (502) to detect whether the filling height of each layer of the reaction tube has reached the program setting value. If the preset value is met, the next layer of medicine can be filled.

[0028] like Figures 1 to 8As shown, the drug storage (600) is located to the right of the reaction tube filling station (500), and consists of an external drug storage frame (601), an internal drug cabinet (602), and a filling head support (603). The drug cabinet (602) is located at the bottom of the drug storage frame (601). The drug cabinet (602) is divided into several individual squares for storing various filling materials. The filling head support (603) is equipped with a filling head (604) for loading and unloading various filling materials. The filling head (604) has a tail end for the central robotic arm (900) to grab.

[0029] like Figures 1 to 9 As shown, the reaction tube storage unit (700) is located to the right of the drug storage unit (600). It consists of an external reaction tube storage unit frame (701) and an internal reaction tube storage rack (702). The reaction tube storage rack (702) has reserved holes for reaction tubes of various specifications and models. From the inside out, the storage areas are: reduction tube storage area (703), combustion tube storage area (704), and pyrolysis tube storage area (705). After the reaction tubes are cleaned and filled, the central robotic arm (900) transfers the reaction tubes to the reaction tube storage rack (702) for storage. The user can then take out the reaction tubes and install them into the elemental analyzer for experiments.

[0030] like Figures 1 to 10 As shown, the waste bin (800) is located on the bottom surface of the operating table (100) and below the reaction tube cleaning station (400). Inside, there is a vacuum pump (801), a waste collection box (802), and a vacuum dust collection main pipe (803). The vacuum dust collection main pipe (803) enters the waste bin (800) from above. A three-way valve (804) is provided at the entrance to the waste bin (800). The inlet connector one (805) of the three-way valve (804) is connected to the first vacuum dust collection pipe (807), and the inlet connector two (806) is connected to the second vacuum dust collection pipe (808). The outlet connector is connected to the vacuum dust collection main pipe. Pipeline (803) is connected to vacuum pump (801). Vacuum suction pipe one (807) is connected to vacuum suction pipe one interface (407) below reaction tube cleaning station (400). Vacuum suction pipe two (808) is connected to four vacuum suction pipe two interfaces (504) below reaction tube filling station (500). Vacuum pump (801) is set on the upper surface of waste collection box (802). Residue and spilled medicine enter the vacuum suction main pipe (803) through vacuum suction pipe one (807) and vacuum suction pipe two (808) respectively, and finally enter the waste collection box (802) for unified treatment.

[0031] Example 2, as Figures 1 to 11 As shown, please refer to the following carefully. Figure 11As shown, the control module includes: a weight detection unit, which collects the weight m of the cleaning chuck (403) detected by the weighing sensor (406); a pressure detection unit, which collects the pressure P of the bottom surface of the vibration table (502) detected by the pressure sensor (505); and a data processing unit, in which the weight detection unit transmits the weight m of the cleaning chuck (403) detected by the weighing sensor (406) to the data processing unit, and the pressure detection unit transmits the pressure P of the bottom surface of the vibration table (502) detected by the pressure sensor (505) to the data processing unit. The control system comprehensively determines the power load rate of the vacuum pump (801) and the opening and closing of the inlet connector one (805) and the inlet connector two (806) of the three-way valve (804) based on the weight m of the cleaning chuck (403) and the pressure P of the bottom surface of the vibration table (502). This ensures that the residue and scattered chemicals generated during the cleaning and filling of the reaction tube are cleaned up in time, avoiding any impact on the cleaning and filling of the reaction tube.

[0032] When the elemental analyzer reaction tube automatic cleaning and filling device needs to be started for reaction tube cleaning and filling, the reaction tube is first placed in the corresponding reaction tube placement position. The corresponding specification and model of the reaction tube in the system is selected. After the reaction tube identification compartment door (203) is closed, the central robotic arm (900) starts to work. The central robotic arm (900) grabs the reaction tube according to the reaction tube type selected by the user and puts it into the cleaning chuck (403) in the reaction tube cleaning station (400). After the cleaning chuck (403) is clamped, the weighing device (405) detects the increase in weight of the cleaning chuck (403), which is the weight of the reaction tube and the residue. After subtracting the self-weight of the reaction tube that has been pre-input into the system, the weight of the residue can be calculated. By calculating the ratio of the weight of the residue to the weight of the reaction tube, the switch and power of the vacuum pump (801) and the switch of the inlet connector (805) of the three-way valve (804) are controlled to realize the treatment of different types of dirt. Effective collection of residues removed during the cleaning process of the reaction tube: After the vacuum pump (801) is turned on, the cleaning robot arm (402) selects a high-strength drill bit or flexible brush head of the corresponding specification on the cleaning head bracket (404) to carry out cleaning operations. When the weighing device (405) detects that the weight of the cleaning chuck (403) has decreased to the sum of the weight of the cleaning chuck (403) and the weight of the reaction tube, it indicates that the cleaning of the reaction tube is completed. The central robot arm (900) can transfer the reaction tube to the reaction tube filling station (500). After the central robot arm (900) transfers the reaction tube to the reaction tube filling station (500), it can continue to transfer the next reaction tube from the reaction tube temporary storage area to the reaction tube cleaning station (400) for cleaning operations. The central robot arm (900) continues to transfer to the drug warehouse (600) to take out the drugs according to the filling procedure of different specifications and models of reaction tubes and transfer them to the filling station for the reaction tube filling process.

[0033] Furthermore, when filling the reaction tube at the reaction tube filling station (500), the filling table vibrates to compact the medicine after each layer of medicine is filled. The laser rangefinder (506) above the vibration table (502) detects whether each layer of medicine is filled to the preset height. If the preset height requirement is met, the next layer of medicine can be filled. If the pressure sensor (505) detects an increase in pressure during the filling process, it indicates that filling material has spilled. The vacuum pump (801) needs to be turned on or the power of the vacuum pump (801) needs to be increased, and the inlet connector two (806) of the three-way valve (804) needs to be switched on to clean up the spilled medicine at the reaction tube filling station (500).

[0034] Furthermore, the start-up or shutdown of the vacuum pump (801) and its power, as well as the opening and closing of the inlet connector one (805) and inlet connector two (806) of the three-way valve (804), are determined by two factors. When the user selects the reaction tube cleaning and filling program, when the electromagnetic force balance weighing sensor (406) detects an increase in the weight of the cleaning clamp (403), it indicates that the reaction tube will undergo a cleaning process. The control system controls the vacuum pump (801) to start and the inlet connector one (805) of the three-way valve (804) to open, and to carry out the residue collection operation at the reaction tube cleaning station (400). The ratio of the residue weight to the weight of the reaction tube is set as the scale accumulation rate S, and the scale accumulation rate S is calculated according to the formula: ; S represents the scale buildup rate; m represents the total weight of the reaction tube after the cleaning clamp (403) is clamped; Indicates the weight of the cleaning chuck (403); This indicates the weight of the reaction tube.

[0035] The output power W of vacuum pump (801) and the rated power of vacuum pump (801) ratio The power load factor is calculated using the formula: The calculation shows that the power load rate of the vacuum pump (801) is adjusted according to the different fouling rates, thereby increasing the service life of the vacuum pump (801) while saving energy.

[0036] Furthermore, after the reaction tube cleaning is completed, the central robotic arm (900) moves the reaction tube to the reaction tube loading station (500). The central robotic arm (900) then clamps the next reaction tube to be cleaned to the reaction tube cleaning station (400). After the reaction tube to be cleaned is clamped, the central robotic arm (900) moves to the drug storage (600) to retrieve the drug and load it to the reaction tube loading station (500) for reaction tube loading. At this time, the reaction tube cleaning station (400) and the reaction tube loading station (500) are operating simultaneously. If the vibration table (5) inside the reaction tube loading station (500) is activated at this time... 02) When the bottom pressure sensor (505) detects pressure P > 0, it indicates that the drug has spilled during the filling process of the reaction tube. It is necessary to open the inlet connector 2 (806) of the three-way valve (804) and adjust the power of the vacuum pump (801) so that it can clean the reaction tube filling station (500) and the reaction tube cleaning station (400) at the same time. When the pressure sensor (505) detects that the pressure increases, the control system controls the power load rate of the vacuum pump (801) to 100%. The relationship between the power load rate of the vacuum pump (801), the scale rate and the pressure is determined according to Table 1. Table 1. Correspondence between fouling rate, pressure and power load rate of vacuum pump (801)

[0037] Furthermore, in specific use of the present invention, assuming the vacuum pump (801) has a power of 1kW, the cleaning chuck (403) weighs 1500g, the reaction tube type is a CN mode reduction tube with an outer diameter of 25mm, a wall thickness of 3mm, a length of 600mm, and a weight of 500g, the user places 5 reaction tubes into the reduction tube placement area (204) on the reaction tube support (202) in the reaction tube identification station (200), and selects the corresponding number, specifications, and type of reaction tubes on the control screen. The central robotic arm (900) will move the first reaction tube to the reaction tube cleaning station (400) and clamp it with the cleaning chuck (403). When the cleaning chuck (403) is clamped, the weighing sensor (406) detects an increase in the weight of the cleaning chuck (403). At this time, the weighing sensor (406) detects that the weight of the cleaning chuck (403) is 2085. The data processing unit calculates the scale accumulation rate of the first reaction tube. =4.25%, the control system controls the vacuum pump (801) to start and adjusts the power load rate to 30%, that is, the power of the vacuum pump (801) is 0.3kW, and opens the inlet connector (805) of the three-way valve (804). At this time, the residue cleaned from the reaction tube can be effectively collected. Then the cleaning robot arm (402) replaces the 19mm diameter high-strength drill bit to clean the first reaction tube. When the weighing sensor (406) detects that the weight of the cleaning chuck (403) is equal to 2000g, it indicates that the cleaning of the first reaction tube is completed.

[0038] Furthermore, after the first reaction tube is cleaned, the central robotic arm (900) moves the first reaction tube to the reaction tube filling station (500), and then moves the second reaction tube to the reaction tube cleaning station (400) for cleaning. Subsequently, the central robotic arm (900) transfers to the chemical storage (600) and sequentially takes out the chemical to be filled in the reduction tube and fills it in the reaction tube filling station (500). If the data processing unit calculates the fouling rate of the second reaction tube at this time... =3.0%, if the pressure sensor (505) at the bottom of the vibration table (502) in the reaction tube filling station (500) does not detect an increase in pressure, the power load rate of the vacuum pump (801) is 20%, that is, the power is 0.2kW; if the pressure sensor (505) at the bottom of the vibration table (502) in the reaction tube filling station (500) detects an increase in pressure, the power load rate of the vacuum pump (801) is adjusted to 100%, that is, the power is 1kW.

[0039] Once all five reaction tubes have been cleaned and filled, the central robotic arm (900) moves all the reaction tubes to the reaction tube storage area, where the user can retrieve them and install them into the elemental analyzer for experimentation.

[0040] It should be noted that, for the sake of brevity, the foregoing method embodiments are described as a series of actions, but this does not mean that the application limits the order of the steps. Based on the ideas of this application, some steps can be executed in different orders or in parallel without affecting the functional implementation. Secondly, those skilled in the art should also understand that the specific embodiments described in the specification are preferred embodiments of the technical solutions of this application, and not limitations on the scope of protection of this application. All equivalent improvements or substitutions made within the spirit and principles of this application should be covered within the scope of protection of this application.

[0041] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic cleaning and filling device for reaction tubes of an elemental analyzer, comprising an operating table, wherein an operating table frame is provided below the operating table, characterized in that: This includes a reaction tube cleaning station and a reaction tube filling station located above the operating platform, a waste bin located below the operating platform frame, a weighing device and cleaning clamp located in the reaction tube cleaning station, a weighing sensor located in the weighing device, a vibration table located in the reaction tube filling station, a pressure sensor located on the bottom surface of the vibration table, and a vacuum pump located in the waste bin. The weighing sensor and pressure sensor are connected to a control module via signals. The control module controls the power load rate of the vacuum pump based on the weight of the residue on the inner wall of the reaction tube detected by the weighing sensor and whether the pressure sensor detects an increase in pressure on the bottom surface of the vibration table.

2. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 1, characterized in that: The reaction tube cleaning station is also equipped with a reaction tube cleaning chamber frame, a cleaning robotic arm, a cleaning head support, a cleaning drill bit, and a vacuum suction pipe interface. The cleaning head support is located on the inner left side of the reaction tube cleaning chamber frame, and the cleaning robotic arm is located on the inner right side of the reaction tube cleaning chamber frame. Various specifications and models of cleaning heads are installed inside the cleaning head support.

3. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 1, characterized in that: The reaction tube filling station is also equipped with a reaction tube filling chamber frame, a reaction tube fixing bracket, a laser rangefinder, and two interfaces for a vacuum suction pipe. The reaction tube fixing bracket is fixed inside the vibration table, the two interfaces for the vacuum suction pipe are located at the four corners of the bottom of the vibration table, and the laser rangefinder is installed on the inner surface of the reaction tube filling chamber frame directly above the vibration table.

4. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 1, characterized in that: Above the operating table are also a reaction tube identification station, a reaction tube library, a drug library, a reaction tube temporary storage library, and a central robotic arm.

5. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 4, characterized in that: The reaction tube storage room is equipped with a reaction tube storage rack, the drug storage room is equipped with a drug cabinet and a filling head support, the filling head support contains various types of filling heads required for filling drugs, and the reaction tube temporary storage room is equipped with a reaction tube temporary storage rack. After the reaction tubes are cleaned and filled, the central robotic arm will move the reaction tubes to the reaction tube temporary storage room for storage.

6. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 1, characterized in that: The waste bin is also equipped with a three-way valve, a waste collection box, and a vacuum suction main pipe. The inlet end of the three-way valve is divided into inlet connector one and inlet connector two. The vacuum pump is installed on the upper surface of the waste collection box. One end of the vacuum suction main pipe is connected to the vacuum pump, and the other end is connected to the three-way valve. When the weighing sensor detects an increase in the weight of the cleaning clamp, inlet connector one is opened. When the pressure sensor detects that the pressure on the bottom surface of the vibration table is greater than zero, inlet connector two is opened.

7. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 6, characterized in that: The inlet connector one and inlet connector two of the three-way valve are respectively connected to the interface of vacuum suction pipe one below the reaction tube cleaning station and the interface of vacuum suction pipe two below the reaction tube filling station through vacuum suction pipe one and vacuum suction pipe two, respectively.

8. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 7, characterized in that: The control module includes: A weight detection unit, which is used to collect the weight of the cleaning chuck detected by the weighing sensor; A pressure detection unit is used to collect the pressure on the bottom surface of the vibration table detected by a pressure sensor. The data processing unit includes a weight detection unit that collects and transmits the weight of the cleaning chuck detected by the weighing sensor, and a pressure detection unit that transmits the pressure of the bottom surface of the vibration table detected by the pressure sensor. The data processing unit calculates the power load rate of the vacuum pump based on the increase in the weight of the cleaning chuck and whether the pressure on the bottom surface of the vibration table increases. This calculation determines the power of the vacuum pump and when to open the inlet connectors 1 and 2 of the three-way valve. This ensures that the residue in the reaction tube during the cleaning process and the chemicals spilled during the filling process are cleaned and collected in a timely manner, ensuring that the cleaning effect of the reaction tube meets the requirements and guaranteeing the cleanliness of the reaction tube during the cleaning process. The control unit controls the power of the vacuum pump and the switching of the inlet connector one and inlet connector two of the three-way valve based on the analysis results of the data processing unit.

9. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 8, characterized in that: The pressure sensor can be installed at any position on the bottom surface of the vibration table. The number of pressure sensors can be increased according to the size of the vibration table. When any pressure sensor detects an increase in pressure, it indicates that medicine has spilled inside the vibration table.

10. The automatic cleaning and filling instrument for elemental analyzer reaction tubes according to claim 8, characterized in that: The weighing sensor is mounted on the surface of the weighing device, and the cleaning clamp is hinged to the surface of the weighing device.

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