Chemical analysis device capable of automatically adding liquid

Abstract

The invention relates to the technical field of chemical analysis, and discloses an automatic liquid adding chemical analysis device which comprises a box body, a case, a cleaning liquid barrel, a waste water barrel and an information acquisition system, the box body is fixed to the upper end of the case, an opening is formed in the upper end of the box body, a cover plate is fixedly connected to the opening, and a plurality of partition plates are fixedly connected into the box body; the interior of the box body is sequentially divided into an assembly chamber, a reagent chamber, a sample chamber, a mounting chamber and a reaction chamber from left to right by the partition plates, two groups of test tube racks are mounted in each of the reagent chamber, the sample chamber and the reaction chamber, test tubes are mounted on the test tube racks, a plurality of through holes matched with the test tubes are formed in the upper end of the cover plate, and a rectangular opening is formed in the upper end of the cover plate. And a rack is arranged in the rectangular opening. According to the chemical analysis device capable of automatically adding the liquid, the inside and the outside of the liquid taking equipment can be thoroughly cleaned, and the situation that the content value of a to-be-detected component in a sample has a large error due to the fact that different samples and chemical reagents are crossed in the subsequent liquid adding process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of chemical analysis, in particular to an automatic liquid-adding chemical analysis device. Background Art

[0002] In recent years, with the rapid development of urbanization and industrialization, the water environment has continued to deteriorate, urban rivers have become black and smelly, and lakes and reservoirs have frequent algal blooms. Relevant units attach great importance to water environment protection and the restoration of polluted water bodies. Water quality monitoring is the top priority of water environment protection work. Without an effective water quality monitoring method, it is impossible to timely and accurately identify the current status, causes, and development trends of water environment pollution, and water environment protection work will not be carried out in a targeted manner. In recent years, automatic water quality monitoring technology has developed rapidly. Online analyzers and automatic monitoring systems based on chemical methods have been widely used in water pollution emission monitoring and river, lake and reservoir water quality monitoring. In addition, a large number of water samples This method still needs to be measured by a chemical analyzer after sampling. Different chemical reagents are added to the collected water samples to generate a color reaction of colored compounds. The content of the component to be measured is determined by comparing or measuring the color depth of the colored substance solution. During colorimetry, images of the color depth of the colored substance solution are batch collected through an information acquisition system, and the content of the component to be measured is determined by visually observing the color depth of the colored substance solution. Secondly, the absorbance of a series of standard solutions can be measured on a photoelectric colorimeter, and the absorbance is plotted against the concentration to draw a working curve. Then, the concentration or content of the component to be measured can be found on the working curve based on the absorbance of the solution of the component to be measured.

[0003] At present, when conducting batch chemical analysis, the work of taking liquid, adding liquid, mixing and waiting for color development reaction is particularly time-consuming. In addition, during the process of taking liquid and adding liquid, a certain amount of residue will remain on the liquid absorbing equipment, which is inconvenient to clean. If the cleaning is not thorough, the liquids will cross-affect the color of the mixed liquid and affect the results of the determination of the content of the component to be tested in the sample. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a chemical analysis device with automatic liquid addition, which solves the problem that a certain amount of residue will exist on the current liquid-absorbing equipment, making it inconvenient to clean. If the cleaning is not thorough, the liquids will cross-affect the color of the mixed liquid and affect the result of determining the content of the component to be tested in the sample.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chemical analysis device with automatic liquid addition, comprising a box body, a chassis, a cleaning liquid barrel, a waste water barrel and an information collection system, wherein the box body is fixed to the upper end of the chassis, an opening is provided at the upper end of the box body, a cover plate is fixedly connected to the opening, a plurality of partitions are fixedly connected to the box body, and the plurality of partitions divide the interior of the box body into an assembly chamber, a reagent chamber, a sample chamber, an installation chamber and a reaction chamber from left to right in sequence, two groups of test tube racks are installed in the reagent chamber, the sample chamber and the reaction chamber, and test tubes are installed on the test tube racks, and a plurality of through holes matching the test tubes are provided at the upper end of the cover plate;

[0008] A rectangular opening is provided at the upper end of the cover plate, a frame is provided in the rectangular opening, a running mechanism is installed on the frame, a liquid collecting head is installed on the running mechanism, a liquid collecting mechanism is provided in the liquid collecting head, and the running mechanism adjusts the liquid collecting mechanism to move in the rectangular opening in the horizontal and vertical directions, so that the liquid collecting mechanism extracts reagents at different positions in the reagent chamber and the sample chamber and adds the sample to the test tube in the reaction chamber for chemical reaction;

[0009] The liquid extraction mechanism extracts and discharges reagents and samples through positive and negative air pressure, and can achieve self-cleaning through the gas and the cleaning agent in the cleaning liquid barrel, and can also homogenize the mixed liquid of the reagent and the sample;

[0010] The upper end of the chassis is provided with a cleaning bucket which moves synchronously with the walking mechanism, and the cleaning bucket is used to clean the liquid taking mechanism and the test tube. The upper end of the cover plate is provided with an end cover for blocking the through hole, and the side wall of the end cover is provided with a channel which matches the through hole.

[0011] Preferably, the walking mechanism comprises a vertical outer tube, the side wall of the frame is fixed on the tube wall of the vertical outer tube, two guide tubes are fixedly connected to the opposite sides of the frame, guide rails are sleeved in the two guide tubes, the guide rails are fixed to one side of the partition, a first motor is fixedly connected to one side of the frame, a first gear is fixedly connected to the output end of the first motor, a first rack is meshed on one side of the first gear, the first rack is fixed to one side of the partition, a vertical inner tube is sleeved in the vertical outer tube, an electric push rod is fixedly connected in the vertical inner tube, a connecting plate is fixedly connected to the output end of the electric push rod, and the connecting plate is fixed to the lower end opening of the vertical outer tube;

[0012] A rotating assembly is installed at the upper end of the vertical inner tube, and a transverse outer tube is installed on the rotating assembly. A transverse inner tube is sleeved in the transverse outer tube, and one end of the transverse inner tube is fixedly connected to the liquid collection head. A second motor is fixedly connected to the tube wall of the transverse outer tube, and the output end of the second motor extends into the transverse inner tube and is fixedly connected to a second gear. A second rack is meshed on one side of the second gear, and the second rack is fixed in the transverse inner tube. A notch is opened on the tube wall at the lower end of the transverse inner tube.

[0013] Preferably, the rotating assembly includes a main shaft, a rectangular plate is fixedly connected to the lower end of the main shaft, the rectangular plate is fixed at the upper end of the vertical inner tube, the transverse outer tube is rotatably connected to the shaft wall of the main shaft through a ball bearing and a bearing seat, the upper end of the rectangular plate is fixedly connected to an outer gear ring, one side of the outer gear ring is meshed with a driving gear, a third motor is fixedly connected to the transverse inner tube, the output end of the third motor is coaxially fixedly connected to the upper end of the driving gear, the notch matches the outer shell width of the second motor, and a notch matching the liquid collection head is opened at one end of the transverse outer tube.

[0014] Preferably, the liquid taking mechanism comprises a main pipe, the lower end of the main pipe is fixedly connected with a hollow sphere, the lower end of the hollow sphere is fixedly connected with two liquid taking pipes, the liquid taking head is a hollow structure and is rotatably connected to the pipe wall of the main pipe through a plurality of sealing bearings, the plurality of sealing bearings divide the interior of the liquid taking head into a positive pressure chamber, a liquid chamber and a negative pressure chamber from top to bottom, and flow holes are provided in the liquid chamber and the negative pressure chamber on the pipe wall of the main pipe, a negative pressure pipe and a liquid supply pipe communicating with the negative pressure chamber and the liquid chamber are fixedly connected on the left side of the liquid taking head, a positive pressure pipe communicating with the positive pressure chamber is fixedly connected on the upper end of the liquid taking head, a first solenoid valve is installed on the pipe walls of the positive pressure pipe, the negative pressure pipe and the liquid supply pipe, two retaining rings are fixedly connected in the main pipe, the lower ends of the two retaining rings are fixed with elastic sheets by double-point riveting, and the flow hole located at the top is arranged between the two retaining rings;

[0015] The upper end of the liquid collection head is fixedly connected to a spindle motor, and the output shaft of the spindle motor is rotatably connected to the upper end of the liquid collection head through a sealed bearing. A gear ring is fixedly connected to the pipe wall of the main pipe, and a driving gear is meshed on one side of the gear ring. The driving gear is coaxially fixedly connected to the end of the output shaft of the spindle motor.

[0016] Preferably, a plurality of connecting blocks are fixedly connected between the two liquid collection tubes, arc-shaped protrusions are provided on opposite sides of the connecting blocks, a guide surface is provided on one side of the arc-shaped protrusion, a plurality of flow measuring holes inclined toward the guide surface are opened on the tube wall of the liquid collection tube, and a constriction portion is provided at the lower end of the liquid collection tube.

[0017] Preferably, the upper end of the chassis is provided with two first strip through holes, and a U-shaped frame is slidably connected in the two first strip holes, one end of the U-shaped frame is fixed to the lower end of the cleaning bucket, and the lower end of the box body is provided with a second strip hole, and the other end of the U-shaped frame passes through the second strip hole and is fixed to the lower end of the frame, a standpipe is fixedly connected in the cleaning bucket, a jet nozzle is fixedly connected to the upper end of the standpipe, a water inlet pipe is fixedly connected to the pipe wall of the standpipe, one end of the water inlet pipe passes through the cleaning bucket and is fixedly connected to a second solenoid valve, a cleaning component of a cleaning liquid taking mechanism is fixedly connected in the cleaning bucket, and an annular rubber block is fixedly connected in the cleaning bucket, an annular groove is provided in the inner ring of the annular rubber block, and the annular groove matches with the pipe mouth of the test tube.

[0018] Preferably, the cleaning assembly comprises an inner cylinder and an outer cylinder, the upper and lower ends of the outer cylinder are fixedly connected to the side wall of the inner cylinder through a necking portion, a sealing ring is fixedly connected in the interlayer between the inner cylinder and the outer cylinder, a plurality of injection holes are obliquely opened on the side wall of the inner cylinder, a liquid inlet pipe is fixedly connected to the side wall of the outer cylinder, a third solenoid valve is fixedly connected to the wall of the liquid inlet pipe, a plurality of brush plates are fixedly connected in the inner cylinder, a plurality of drain pipes are fixedly connected to the side wall of the inner cylinder, the plurality of drain pipes are fixedly connected to the side wall of the outer cylinder, and a sewage pipe is fixedly connected to the side wall of the cleaning bucket.

[0019] Preferably, the upper end of the end cover is slidably connected to a pressure frame, the pressure frame is fixed to the upper end of the cover plate, one side of the pressure frame is slidably connected to two pull rods through two slide grooves, one end of the two pull rods is commonly fixedly connected to a rectangular frame, a servo is fixedly connected in the assembly chamber, the output end of the servo is fixedly connected to a swing arm, one end of the swing arm is fixedly connected to a pin shaft, the pin shaft extends into the rectangular frame, and a rectangular opening is provided on the side wall of the end cover.

[0020] Preferably, an inner recess is provided at one end of the box body, a plurality of windows are formed in the inner recess, the test tube rack is inserted into the window, a crossbeam is provided in the test tube rack, a circular opening matching with the outer wall of the test tube is formed together with the upper ends of the crossbeam and the test tube rack, a silicone strip is fixedly connected in the test tube rack, a plurality of grooves matching with the lower end of the test tube is formed at the upper end of the silicone strip, a handle is provided at one end of the test tube rack, a first magnetic block is fixedly connected to the other end of the test tube rack, a second magnetic block matching with the position of the first magnetic block is fixedly connected to one side of the box body, and the first magnetic block is attracted to the second magnetic block.

[0021] Preferably, the cleaning liquid barrel and the waste water barrel are both fixed in the chassis, a plunger water pump is fixedly connected to the cleaning liquid barrel, the water inlet end of the plunger water pump is connected to the cleaning liquid barrel through a pipe, the water outlet end of the plunger water pump is fixedly connected to a water pipe joint, and a box door is installed at one end of the chassis through a hinge.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a chemical analysis device with automatic liquid addition, which has the following beneficial effects:

[0024] 1. When the present invention is in use, the walking mechanism and the liquid taking mechanism extract reagents from different positions in the reagent chamber and the sample chamber according to the set program and add the sample to the test tube in the reaction chamber for chemical reaction. First, the liquid taking mechanism sucks the sample, transfers the sample and then extracts the corresponding chemical reagent. When the chemical reagent is added, the liquid taking mechanism can homogenously mix the mixed liquid of the reagent and the sample. After completion, the liquid taking mechanism is directly moved to the cleaning barrel for cleaning, and the inside and outside can be thoroughly cleaned during cleaning, so as to avoid the crossover of different samples and chemical reagents during subsequent liquid addition, which affects the result of the reaction between the sample and the chemical reagent.

[0025] 2. The present invention is provided with a walking mechanism. When in use, the connecting plate is pushed by starting the electric push rod. At this time, the vertical inner tube is lifted by the reverse force of the electric push rod, thereby pushing the horizontal inner tube and the horizontal outer tube to be displaced in the vertical direction. The second gear is driven to rotate by starting the second motor. When the second gear rotates, it can drive the second rack to move the horizontal inner tube. When the horizontal inner tube moves, it drives the liquid taking head to be displaced in the horizontal direction. At the same time, the first gear is driven to roll on the first rack by starting the first motor. At this time, the first motor and the first gear drive the frame to be displaced through the guide rail, so that the liquid taking mechanism can move to different positions to take out chemical reagents and samples in the test tube. When taking out samples or chemical reagents, the third motor drives the driving gear to rotate, and the driving gear rotates and rolls on the outer gear ring, thereby enabling the horizontal inner tube and the horizontal outer tube to make a circular motion around the main axis, so that the liquid taken by the liquid taking mechanism can be sent to the test tube in the reaction chamber for mixing.

[0026] 3. When the two liquid taking tubes provided in the present invention rotate at the same time, the connecting block can be used to stir the mixed liquid in the test tube. At the same time, when the liquid taking tube is discharging liquid, the oblique flow measuring hole can discharge an oblique jet toward the flow guide surface, and the bundle mouth at the lower end of the liquid taking tube can discharge a downward straight jet, so that a certain kinetic energy can be applied to the liquid during the liquid discharging process to make it flow in the test tube. At the same time, after the liquid is emptied, the gas in the pipeline will be partially discharged into the mixed liquid to form small bubbles. When the bubbles explode in the liquid, the chemical agent can be quickly dissolved in the sample again. When the liquid taking mechanism needs to be cleaned, the liquid taking tube is moved to the cleaning bucket, and the first solenoid valve on the liquid supply tube and the positive pressure tube is opened at the same time, so that the cleaning agent and the airflow can be used to clean the hollow sphere and the residue inside the liquid taking tube.

[0027] 4. The cleaning barrel provided in the present invention, when in use, the liquid taking tube moves to the inner cylinder in the cleaning barrel, at this time, the spindle motor is started to drive the liquid taking mechanism to rotate the liquid taking tube, and the liquid taking tube rotates and rubs against the brush plate. At this time, the third solenoid valve can be opened to allow the cleaning liquid to enter the interlayer from the liquid inlet tube, and the cleaning agent is sprayed into the inner cylinder from the injection hole. At this time, the cleaning agent flows down along the liquid taking tube, so that the surface of the liquid taking tube can be cleaned in cooperation with the brush plate, and the first solenoid valve on the liquid supply tube and the positive pressure tube is opened at the same time, and the hollow sphere and the residue inside the liquid taking tube are cleaned together with the cleaning agent and the air flow, so that the liquid taking tube can be thoroughly cleaned. After the cleaning is completed, when it is necessary to clean the test tube, the test tube is put on the standpipe, and the second solenoid valve is opened to allow the cleaning agent to enter the standpipe and be sprayed from the jet head. The sprayed cleaning agent directly washes the residue in the test tube, and the waste water after cleaning is collected at the bottom of the inner cylinder and flows into the cleaning barrel from the drain pipe, and finally discharged through the sewage pipe. The sewage pipe is connected to the waste water bucket with a hose, so that the waste water can be centrally processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of an automatic liquid-adding chemical analysis device proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of a chassis in an automatic liquid-adding chemical analysis device proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a partition, a walking mechanism, a liquid taking mechanism and a cleaning bucket in an automatic liquid adding chemical analysis device proposed by the present invention;

[0031] Figure 4 A schematic diagram of the structure of the walking mechanism in the automatic liquid-adding chemical analysis device proposed by the present invention Figure 1 ;

[0032] Figure 5 A schematic diagram of the structure of the walking mechanism in the automatic liquid-adding chemical analysis device proposed by the present invention Figure 2 ;

[0033] Figure 6 A schematic diagram of the structure of the walking mechanism in the automatic liquid-adding chemical analysis device proposed by the present invention Figure 3 ;

[0034] Figure 7 This is a schematic diagram of the structure of a liquid taking mechanism in a chemical analysis device with automatic liquid addition proposed by the present invention;

[0035] Figure 8 This is a structural schematic diagram of a main pipe, a hollow sphere, a liquid collection pipe and a connecting block in an automatic liquid-adding chemical analysis device proposed by the present invention;

[0036] Fig. 9 This is a schematic diagram of the structure of a liquid taking tube and a connecting block in an automatic liquid adding chemical analysis device proposed by the present invention;

[0037] Fig.10 This is a schematic diagram of the internal structure of a cleaning barrel in an automatic liquid-adding chemical analysis device proposed by the present invention;

[0038] Fig.11 This is a schematic diagram of the structure of the inner cylinder and the outer cylinder in an automatic liquid-adding chemical analysis device proposed by the present invention;

[0039] Fig.12 This is a schematic diagram of the structure of a test tube rack and test tubes in an automatic liquid-adding chemical analysis device proposed by the present invention;

[0040] Fig.13 This is a schematic structural diagram of a pressure frame, an end cover, a cover plate and a box body in an automatic liquid-adding chemical analysis device proposed by the present invention;

[0041] Fig.14 This is a schematic diagram of the structure of a partition plate, a box body and a cover plate in an automatic liquid-adding chemical analysis device proposed by the present invention;

[0042] Fig.15 The effect of the automatic liquid-adding chemical analysis device proposed by the present invention when it is working Figure 1 ;

[0043] Fig.16 The effect of the automatic liquid-adding chemical analysis device proposed by the present invention when it is working Figure 2 .

[0044] In the figure: 1, box body; 2, chassis; 3, cleaning barrel; 4, press frame; 5, horizontal inner tube; 6, horizontal outer tube; 7, vertical outer tube; 8, main tube; 9, end cover; 10, test tube rack; 11, cover plate; 12, plunger water pump; 13, partition; 14, guide rail; 15, liquid extraction tube; 16, hollow sphere; 17, spindle motor; 18, outer tube; 19, U-shaped frame; 20, first rack; 21, guide tube; 22, second rack; 23, third motor; 24, spindle; 25, outer gear ring; 26, electric push rod; 27, vertical inner tube ; 28. First gear; 29. ​​First motor; 30. Second motor; 31. Second gear; 32. Driving gear; 33. Liquid taking head; 34. Flow hole; 35. Gear ring; 36. Driving gear; 37. Retaining ring; 38. Elastic sheet; 39. Connecting block; 40. Guide surface; 41. Test tube; 42. Annular rubber block; 43. Vertical pipe; 44. Inner tube; 45. Brush plate; 46. Sealing ring; 47. Silicone strip; 48. First magnetic block; 49. Servo; 50. Rectangular frame; 51. Second magnetic block; 52. Information acquisition system. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment 1:

[0047] See attached Figures 1 to 16 ,A chemical analysis device with automatic liquid addition includes a box body 1, a chassis 2, a cleaning liquid barrel, a waste water barrel and an information acquisition system 52. The image acquisition system 52 is equipped with a high-definition camera and a fill light unit. After the reaction is completed, the test tube rack 10 can be taken out and the multiple test tubes 42 carried by it can be sent to the image acquisition system 52. During the uniform movement of the test tube rack 10, the information on the surface of the test tube can be collected by the high-definition camera, and the color of the mixed liquid after the chemical reaction in the test tube can be photographed. The photo information and the information on the surface of the test tube can be synchronously transmitted to the user's PC end for easy viewing by technicians. This technology has been widely used and will not be described in detail here. The cleaning liquid barrel and the waste water barrel are both fixed in the chassis 2. A plunger water pump 12 is fixedly connected to the cleaning liquid barrel. The water inlet end of the plunger water pump 12 is connected to the cleaning liquid barrel through a pipeline, and the water outlet end of the plunger water pump 12 is fixedly connected to a water pipe joint. A box door is installed at one end of the chassis 2 through a hinge. The box body 1 is fixed at the upper end of the chassis 2, and an opening is opened at the upper end of the box body 1. A cover plate 11 is fixedly connected to the opening, and a plurality of partitions 13 are fixedly connected inside the box body 1. The plurality of partitions 13 divide the inside of the box body 1 into an assembly chamber, a reagent chamber, a sample chamber, an installation chamber and a reaction chamber from left to right. Two groups of test tube racks 10 are installed in the reagent chamber, the sample chamber and the reaction chamber, and test tubes 41 are installed on the test tube racks 10. A plurality of through holes matching the test tubes 41 are opened at the upper end of the cover plate 11. An inner concave portion is provided at one end of the box body 1, and a plurality of windows are opened in the inner concave portion. The test tube racks 10 are inserted into the windows. A crossbeam is provided in the test tube rack 10, and a circular opening matching the outer wall of the test tube 41 is formed on the crossbeam and the upper end of the test tube rack 10. A silicone strip 47 is fixedly connected in the test tube rack 10, and a plurality of grooves matching the lower end of the test tube 41 are formed on the upper end of the silicone strip 47. A handle is provided at one end of the test tube rack 10, and a first magnetic block 48 is fixedly connected to the other end of the test tube rack 10. A second magnetic block 51 matching the position of the first magnetic block 48 is fixedly connected to one side of the box body 1, and the first magnetic block 48 and the second magnetic block 51 are attracted to each other.

[0048] A rectangular opening is provided at the upper end of the cover plate 11, and a frame is provided in the rectangular opening. A walking mechanism is installed on the frame, and a liquid collecting head 33 is installed on the walking mechanism. A liquid collecting mechanism is provided in the liquid collecting head 33. A cleaning bucket 3 which moves synchronously with the walking mechanism is provided at the upper end of the chassis 2. The cleaning bucket 3 is used to clean the liquid collecting mechanism and the test tube 41. An end cover 9 for blocking the through hole is installed at the upper end of the cover plate 11. A channel matching the through hole is provided on the side wall of the end cover 9. A pressure frame 4 is slidably connected to the upper end of the end cover 9. The pressure frame 4 is fixed to the upper end of the cover plate 11. Two pull rods are slidably connected to one side of the pressure frame 4 through two slide grooves. One end of the two pull rods are fixedly connected to a rectangular frame 50. A steering gear 49 is fixedly connected in the assembly chamber. A swing arm is fixedly connected to the output end of the steering gear 49. A pin is fixedly connected to one end of the swing arm. The pin extends into the rectangular frame 50. A rectangular opening is provided on the side wall of the end cover 9.

[0049] When the present invention is in use, the test tube rack 10 is used to load the test tube 41 containing chemical reagents into the reagent chamber, the test tube rack 10 is used to load the test tube 41 containing liquid samples into the sample chamber, and the test tube rack 10 is used to load the clean empty test tube 41 into the reaction chamber. When the test tube rack 10 enters different spaces, the test tube rack 10 can be limited by the attraction of the first magnetic block 48 and the second magnetic block 51. At the same time, when the test tube 41 is inserted into the test tube rack 10, the silicone strip 47 can be used to effectively protect the test tube 41. At the same time, the groove on the silicone strip 47 can generate negative pressure adsorption on the bottom of the test tube 41, so that the test tube 41 is not easy to slip without external force. When working, the walking mechanism and the liquid taking mechanism are configured with a power supply and a control host according to the set program and the needs of the prior art. The PLC controller configured in the control host can automatically set the program control device in the program control device. Multiple execution motors and execution components work together to enable the liquid taking mechanism to extract various reagents and samples from the test tubes 41 distributed in a matrix, and also to place the test tubes 41 at different matrix positions for chemical reactions. This technology has been widely used in life and is already known to those skilled in the art, so it will not be described in detail. Reagents from different positions in the reagent chamber and the sample chamber are extracted and added to the test tubes 41 in the reaction chamber for chemical reactions. First, the liquid taking mechanism absorbs the sample, transfers the sample, and then extracts the corresponding chemical reagent. When the chemical reagent is added, the liquid taking mechanism can homogenously mix the mixed liquid of the reagent and the sample. After completion, the liquid taking mechanism is directly moved to the cleaning barrel 3 for cleaning, and the inside and outside can be thoroughly cleaned during cleaning to avoid the crossover of different samples and chemical reagents during subsequent liquid addition, which affects the results of the reaction between the sample and the chemical reagent.

[0050] When the addition of chemical reagents is stopped, the servo 49 is started to drive the swing arm to swing the axle pin, and the swing of the axle pin drives the rectangular frame 50 to make the pull rod pull the end cover 9 to move. After the end cover 9 moves, the channel and the through hole are gradually staggered until the solid part of the end cover 9 blocks the through hole. It is beneficial to equip the reagent room, sample room and reaction room with temperature control equipment (not shown in the figure) so that the chemical reagents, samples and mixed solutions can all be in a suitable range, which is beneficial to increase the speed of the chemical reaction.

[0051] Embodiment 2: Based on embodiment 1, the difference is that;

[0052] See attached Figures 3 to 6 The walking mechanism includes a vertical outer tube 7, the side wall of the frame is fixed on the tube wall of the vertical outer tube 7, two guide tubes 21 are fixedly connected to the opposite sides of the frame, the two guide tubes 21 are sleeved with guide rails 14, the guide rails 14 are fixed to one side of the partition 13, a first motor 29 is fixedly connected to one side of the frame, the output end of the first motor 29 is fixedly connected to the first gear 28, one side of the first gear 28 is meshed with a first rack 20, the first rack 20 is fixed to one side of the partition 13, a vertical inner tube 27 is sleeved in the vertical outer tube 7, an electric push rod 26 is fixedly connected in the vertical inner tube 27, the output end of the electric push rod 26 is fixedly connected to a connecting plate, and the connecting plate is fixed to the lower end opening of the vertical outer tube 7;

[0053] A rotating assembly is installed at the upper end of the vertical inner tube 27, and a transverse outer tube 6 is installed on the rotating assembly. The transverse inner tube 5 is sleeved in the transverse outer tube 6, and one end of the transverse inner tube 5 is fixedly connected to the liquid collection head 33. A second motor 30 is fixedly connected to the tube wall of the transverse outer tube 6. The output end of the second motor 30 extends into the transverse inner tube 5 and is fixedly connected to the second gear 31. A second rack 22 is meshed on one side of the second gear 31. The second rack 22 is fixed in the transverse inner tube 5, and a notch is opened on the tube wall at the lower end of the transverse inner tube 5.

[0054] The rotating assembly includes a main shaft 24, a rectangular plate is fixedly connected to the lower end of the main shaft 24, and the rectangular plate is fixed to the upper end of the vertical inner tube 27. The transverse outer tube 6 is rotatably connected to the shaft wall of the main shaft 24 through a ball bearing and a bearing seat. The upper end of the rectangular plate is fixedly connected to an outer gear ring 25, and a driving gear 32 is meshed on one side of the outer gear ring 25. A third motor 23 is fixedly connected to the transverse inner tube 5, and the output end of the third motor 23 is coaxially fixedly connected to the upper end of the driving gear 32. The notch matches the outer shell width of the second motor 30. A notch matching the liquid collection head 33 is opened at one end of the transverse outer tube 6. The walking mechanism adjusts the liquid collection mechanism to move in the rectangular opening in the horizontal and vertical directions, so that the liquid collection mechanism extracts reagents from different positions in the reagent chamber and the sample chamber and adds the sample to the test tube 41 in the reaction chamber for chemical reaction.

[0055] The present invention is provided with a walking mechanism. When in use, the connecting plate is pushed by starting the electric push rod 26. At this time, the vertical inner tube 27 is lifted by the reverse force of the electric push rod 26, so that the transverse inner tube 5 and the transverse outer tube 6 can be pushed to move in the vertical direction. The second gear 31 is driven to rotate by starting the second motor 30. When the second gear 31 rotates, it can drive the second rack 22 to move the transverse inner tube 5. When the transverse inner tube 5 moves, it drives the liquid taking head 33 to move in the transverse direction. At the same time, the first motor 29 is started to drive the first gear 28 in the first gear 29. The first motor 29 and the first gear 28 drive the frame to move through the guide rail 14, so that the liquid taking mechanism can move to different positions to take out the chemical reagents and samples in the test tube 41. When taking out the sample or chemical reagent, the third motor 23 drives the driving gear 32 to rotate, and the driving gear 32 rotates and rolls on the outer gear ring 25, so that the transverse inner tube 5 and the transverse outer tube 6 can make a circular motion around the main shaft 24, so that the liquid taken by the liquid taking mechanism can be sent to the test tube 41 in the reaction chamber for mixing.

[0056] Embodiment 3: Based on embodiment 1, the difference is that;

[0057] See attached Figures 7 to 9 The liquid taking mechanism includes a main pipe 8, a hollow sphere 16 is fixedly connected to the lower end of the main pipe 8, two liquid taking pipes 15 are fixedly connected to the lower end of the hollow sphere 16, a liquid taking head 33 is a hollow structure and is rotatably connected to the pipe wall of the main pipe 8 through a plurality of sealing bearings, and the plurality of sealing bearings divide the inside of the liquid taking head 33 into a positive pressure chamber, a liquid chamber and a negative pressure chamber from top to bottom, and a flow hole 34 is provided in the liquid chamber and the negative pressure chamber on the pipe wall of the main pipe 8, a negative pressure pipe and a liquid supply pipe communicating with the negative pressure chamber and the liquid chamber are fixedly connected to the left side of the liquid taking head 33, a positive pressure pipe communicating with the positive pressure chamber is fixedly connected to the upper end of the liquid taking head 33, and a first solenoid valve is installed on the pipe wall of the positive pressure pipe, the negative pressure pipe and the liquid supply pipe, and two retaining rings 37 are fixedly connected inside the main pipe 8, and the lower ends of the two retaining rings 37 are fixed with elastic sheets 38 by double-point riveting, and a flow hole 34 located above is arranged between the two retaining rings 37;

[0058] The upper end of the liquid taking head 33 is fixedly connected to the spindle motor 17, and the output shaft of the spindle motor 17 is rotatably connected to the upper end of the liquid taking head 33 through a sealed bearing. A gear ring 35 is fixedly connected to the tube wall of the main tube 8, and a driving gear 36 is meshed on one side of the gear ring 35. The driving gear 36 is coaxially fixedly connected to the end of the output shaft of the spindle motor 17. A plurality of connecting blocks 39 are commonly fixedly connected between the two liquid taking tubes 15. Arc-shaped protrusions are provided on the opposite sides of the connecting blocks 39, and a guide surface 40 is provided on one side of the arc-shaped protrusion. A plurality of flow measuring holes inclined toward the guide surface 40 are provided on the tube wall of the liquid taking tube 15, and a constriction portion is provided at the lower end of the liquid taking tube 15. The liquid taking mechanism extracts and discharges reagents and samples through positive and negative air pressure, and can achieve self-cleaning through the gas and the cleaning agent in the cleaning liquid barrel, and can also homogenize the mixed liquid of the reagents and samples.

[0059] The present invention is provided with a liquid taking mechanism, and a water diverter valve (not shown in the figure) is arranged at the water outlet end of the plunger water pump 12, and the liquid supply pipe is connected to the water outlet of the water diverter valve through a hose, and the negative pressure pipe and the positive pressure pipe are respectively connected to the interface of the positive and negative pressure equipment (not shown in the figure, the existing piston type air pumping equipment and air pumping equipment are used) through high-pressure pipes. When the negative pressure pipe is working, the corresponding first solenoid valve is opened, and the first solenoid valve is a normally closed solenoid valve. The first solenoid valves on the other pipes are all closed. At this time, under the action of negative pressure, the liquid in the test tube 41 passes through the flow measuring hole and the bundle mouth at the lower end of the liquid taking pipe 15 and enters the hollow sphere 16 for storage. The volume of the hollow sphere 16 is the maximum single liquid taking amount. A liquid level sensor can be set at the connection between the lower end of the main pipe 8 and the hollow sphere 16 to monitor the liquid level height and control the single extraction amount. When discharging, the first solenoid valve on the negative pressure pipe is closed, and the first solenoid valve on the positive pressure pipe is opened to send in positive pressure gas. At this time, the air pressure can be used to squeeze out the liquid in the hollow sphere 16.

[0060] After the addition is completed, the motor 17 of the main shaft 24 is started to drive the driving gear 36 to rotate the gear ring 35. The rotation of the gear ring 35 drives the main pipe 8, the hollow sphere 16 and the two liquid collection tubes 15 to rotate simultaneously. When the two liquid collection tubes 15 rotate simultaneously, the connecting block 39 can be used to stir the mixed liquid in the test tube 41. At the same time, when the liquid collection tube 15 is discharging liquid, the oblique flow measuring hole can discharge an oblique jet toward the guide surface 40, and the bundle mouth at the lower end of the liquid collection tube 15 can discharge a downward straight jet, so that a certain kinetic energy can be applied to the liquid during the discharge process to make it flow in the test tube 41. At the same time, after the liquid is emptied, the gas in the pipeline will be partially discharged into the mixed liquid to form small bubbles. When the bubbles burst in the liquid, the chemical agent can be quickly dissolved in the sample again.

[0061] When the liquid collection mechanism needs to be cleaned, the liquid collection tube 15 is moved into the cleaning barrel 3, and the first solenoid valve on the liquid supply tube and the positive pressure tube is opened at the same time, and the cleaning agent and airflow are used to clean the hollow sphere 16 and the residue inside the liquid collection tube 15. At the same time, the cleaning component in the cleaning barrel 3 is used to clean the outside of the liquid collection tube 15.

[0062] Embodiment 4: Based on embodiment 1, the difference is that;

[0063] See attached Fig.10 and Fig.11 Two first strip through holes are provided at the upper end of the chassis 2, and a U-shaped frame 19 is slidably connected in the two first strip holes. One end of the U-shaped frame 19 is fixed to the lower end of the cleaning bucket 3. A second strip hole is provided at the lower end of the box body 1, and the other end of the U-shaped frame 19 passes through the second strip hole and is fixed to the lower end of the frame. A vertical pipe 43 is fixedly connected in the cleaning bucket 3, and a jet nozzle is fixedly connected to the upper end of the vertical pipe 43. A water inlet pipe is fixedly connected to the pipe wall of the vertical pipe 43, and one end of the water inlet pipe passes through the cleaning bucket 3 and is fixedly connected to the second solenoid valve. A cleaning component of the cleaning liquid taking mechanism is fixedly connected in the cleaning bucket 3, and the cleaning component includes an inner cylinder 44 and an outer cylinder 18, and the upper and lower ends of the outer cylinder 18 are The inner cylinder 44 is fixedly connected to the side wall of the inner cylinder 44 through the necking portion, a sealing ring 46 is fixedly connected in the interlayer between the inner cylinder 44 and the outer cylinder 18, a plurality of injection holes are obliquely provided on the side wall of the inner cylinder 44, a liquid inlet pipe is fixedly connected to the side wall of the outer cylinder 18, a third solenoid valve is fixedly connected to the wall of the liquid inlet pipe, a plurality of brush plates 45 are fixedly connected in the inner cylinder 44, a plurality of drain pipes are fixedly connected to the side wall of the inner cylinder 44, and the plurality of drain pipes are fixedly connected to the side wall of the outer cylinder 18, a sewage pipe is fixedly connected to the side wall of the cleaning barrel 3, an annular rubber block 42 is fixedly connected in the cleaning barrel 3, an annular groove is provided in the inner ring of the annular rubber block 42, and the annular groove matches the pipe mouth of the test tube 41.

[0064] The cleaning barrel 3 provided in the present invention is used. When the liquid taking tube 15 is moved to the inner cylinder 44 in the cleaning barrel 3, the main shaft 24 motor 17 is started to drive the liquid taking mechanism to rotate the liquid taking tube 15. The liquid taking tube 15 rotates and rubs against the brush plate 45. At this time, the third solenoid valve can be opened to allow the cleaning liquid to enter the interlayer from the liquid inlet pipe, and the cleaning agent is sprayed into the inner cylinder 44 from the injection hole. At this time, the cleaning agent flows down along the liquid taking tube 15, so that the brush plate 45 can be used to clean the surface of the liquid taking tube 15. At the same time, the first solenoid valve on the liquid supply pipe and the positive pressure pipe is opened to The cleaning agent and the airflow jointly clean the residue inside the hollow sphere 16 and the liquid collection tube 15, so that the liquid collection tube 15 can be thoroughly cleaned. After the cleaning is completed, when the test tube 41 needs to be cleaned, the test tube 41 is put on the standpipe 43, and the second solenoid valve is opened to allow the cleaning agent to enter the standpipe 43 and be sprayed out from the jet head. The sprayed cleaning agent directly rinses the residue in the test tube 41, and the waste water after cleaning is collected at the bottom of the inner tube 44 and flows into the cleaning bucket 3 from the drain pipe, and finally discharged through the sewage pipe. The sewage pipe is connected to the waste water bucket with a hose so that the waste water can be centrally treated.

[0065] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical analysis device with automatic liquid addition, comprising a box (1), a chassis (2), a cleaning liquid bucket, a waste water bucket and an information collection system (52), wherein the box (1) is fixed to the upper end of the chassis (2), an opening is formed at the upper end of the box (1), and a cover plate (11) is fixedly connected to the opening, characterized in that: A plurality of partitions (13) are fixedly connected inside the box (1), and the plurality of partitions (13) divide the inside of the box (1) into an assembly chamber, a reagent chamber, a sample chamber, an installation chamber and a reaction chamber from left to right in sequence. Two groups of test tube racks (10) are installed in each of the reagent chamber, the sample chamber and the reaction chamber, and test tubes (41) are installed on the test tube racks (10). A plurality of through holes matching the test tubes (41) are opened at the upper end of the cover plate (11); A rectangular opening is provided at the upper end of the cover plate (11), a frame is provided in the rectangular opening, a running mechanism is installed on the frame, a liquid collecting head (33) is installed on the running mechanism, a liquid collecting mechanism is provided in the liquid collecting head (33), and the running mechanism adjusts the liquid collecting mechanism to move in the rectangular opening in the horizontal and vertical directions, so that the liquid collecting mechanism extracts reagents from different positions in the reagent chamber and the sample chamber and adds the sample to the test tube (41) in the reaction chamber for chemical reaction; The liquid extraction mechanism extracts and discharges reagents and samples through positive and negative air pressure, and can achieve self-cleaning through the gas and the cleaning agent in the cleaning liquid barrel, and can also homogenize the mixed liquid of the reagent and the sample; The upper end of the chassis (2) is provided with a cleaning bucket (3) which moves synchronously with the walking mechanism, and the cleaning bucket (3) is used to clean the liquid taking mechanism and the test tube (41). The upper end of the cover plate (11) is provided with an end cover (9) for blocking the through hole, and the side wall of the end cover (9) is provided with a channel which matches the through hole.

2. The chemical analysis device with automatic liquid addition according to claim 1, characterized in that: The walking mechanism comprises a vertical outer tube (7), the side wall of the frame is fixed on the tube wall of the vertical outer tube (7), two guide tubes (21) are fixedly connected to opposite sides of the frame, guide rails (14) are sleeved in the two guide tubes (21), the guide rails (14) are fixed to one side of the partition (13), a first motor (29) is fixedly connected to one side of the frame, the output end of the first motor (29) is fixedly connected to a first gear (28), one side of the first gear (28) is meshed with a first rack (20), the first rack (20) is fixed to one side of the partition (13), a vertical inner tube (27) is sleeved in the vertical outer tube (7), an electric push rod (26) is fixedly connected in the vertical inner tube (27), the output end of the electric push rod (26) is fixedly connected to a connecting plate, and the connecting plate is fixed to the lower end opening of the vertical outer tube (7); A rotating assembly is installed at the upper end of the vertical inner tube (27), and a transverse outer tube (6) is installed on the rotating assembly. A transverse inner tube (5) is sleeved in the transverse outer tube (6), and one end of the transverse inner tube (5) is fixedly connected to a liquid taking head (33). A second motor (30) is fixedly connected to the tube wall of the transverse outer tube (6), and the output end of the second motor (30) extends into the transverse inner tube (5) and is fixedly connected to a second gear (31). A second rack (22) is meshed on one side of the second gear (31), and the second rack (22) is fixed in the transverse inner tube (5). A notch is opened on the tube wall at the lower end of the transverse inner tube (5).

3. The automatic liquid-adding chemical analysis device according to claim 2, characterized in that: The rotating assembly comprises a main shaft (24), the lower end of the main shaft (24) is fixedly connected to a rectangular plate, the rectangular plate is fixed to the upper end of the vertical inner tube (27), the transverse outer tube (6) is rotatably connected to the shaft wall of the main shaft (24) through a ball bearing and a bearing seat, the upper end of the rectangular plate is fixedly connected to an outer gear ring (25), one side of the outer gear ring (25) is meshed with a driving gear (32), a third motor (23) is fixedly connected to the transverse inner tube (5), the output end of the third motor (23) is coaxially fixedly connected to the upper end of the driving gear (32), the notch matches the outer shell width of the second motor (30), and one end of the transverse outer tube (6) is provided with a notch matching the liquid collection head (33).

4. The automatic liquid-adding chemical analysis device according to claim 1, characterized in that: The liquid collection mechanism comprises a main pipe (8), the lower end of which is fixedly connected to a hollow sphere (16), the lower end of which is fixedly connected to two liquid collection pipes (15), the liquid collection head (33) is a hollow structure and is rotatably connected to the wall of the main pipe (8) via a plurality of sealing bearings, the plurality of sealing bearings divide the interior of the liquid collection head (33) into a positive pressure chamber, a liquid chamber and a negative pressure chamber from top to bottom, and the wall of the main pipe (8) is provided with flow holes (34) in the liquid chamber and the negative pressure chamber. ), the left side of the liquid taking head (33) is fixedly connected with a negative pressure pipe and a liquid supply pipe communicating with the negative pressure chamber and the liquid chamber, the upper end of the liquid taking head (33) is fixedly connected with a positive pressure pipe communicating with the positive pressure chamber, the walls of the positive pressure pipe, the negative pressure pipe and the liquid supply pipe are all equipped with a first solenoid valve, the main pipe (8) is fixedly connected with two retaining rings (37), the lower ends of the two retaining rings (37) are both riveted with elastic sheets (38) at two points, and the flow hole (34) located at the top is arranged between the two retaining rings (37); The upper end of the liquid taking head (33) is fixedly connected to a spindle motor (17), and the output shaft of the spindle motor (17) is rotatably connected to the upper end of the liquid taking head (33) via a sealed bearing. A toothed ring (35) is fixedly connected to the wall of the main pipe (8), and a driving gear (36) is meshed on one side of the toothed ring (35). The driving gear (36) is coaxially fixedly connected to the end of the output shaft of the spindle motor (17).

5. The automatic liquid-adding chemical analysis device according to claim 4, characterized in that: A plurality of connection blocks (39) are fixedly connected between the two liquid collection tubes (15), arc-shaped protrusions are arranged on opposite sides of the connection blocks (39), a flow guide surface (40) is arranged on one side of the arc-shaped protrusion, a plurality of flow measuring holes inclined toward the flow guide surface (40) are opened on the tube wall of the liquid collection tube (15), and a constriction portion is arranged at the lower end of the liquid collection tube (15).

6. The automatic liquid-adding chemical analysis device according to claim 1, characterized in that: The upper end of the chassis (2) is provided with two first strip-shaped through holes, and a U-shaped frame (19) is slidably connected in the two first strip-shaped holes. One end of the U-shaped frame (19) is fixed to the lower end of the cleaning bucket (3). The lower end of the box body (1) is provided with a second strip-shaped hole, and the other end of the U-shaped frame (19) passes through the second strip-shaped hole and is fixed to the lower end of the frame. A vertical pipe (43) is fixedly connected in the cleaning bucket (3), and a jet nozzle is fixedly connected to the upper end of the vertical pipe (43). A water inlet pipe is fixedly connected to the pipe wall of the vertical pipe (43), and one end of the water inlet pipe passes through the cleaning bucket (3) and is fixedly connected to a second solenoid valve. A cleaning component of a cleaning liquid taking mechanism is fixedly connected in the cleaning bucket (3). An annular rubber block (42) is fixedly connected in the cleaning bucket (3), and an annular groove is provided in the inner ring of the annular rubber block (42), and the annular groove matches the pipe mouth of the test tube (41).

7. The automatic liquid-adding chemical analysis device according to claim 6, characterized in that: The cleaning assembly comprises an inner cylinder (44) and an outer cylinder (18); the upper and lower ends of the outer cylinder (18) are fixedly connected to the side wall of the inner cylinder (44) through a constricted portion; a sealing ring (46) is fixedly connected in the interlayer between the inner cylinder (44) and the outer cylinder (18); a plurality of spray holes are obliquely opened on the side wall of the inner cylinder (44); a liquid inlet pipe is fixedly connected to the side wall of the outer cylinder (18); a third solenoid valve is fixedly connected to the wall of the liquid inlet pipe; a plurality of brush plates (45) are fixedly connected in the inner cylinder (44); a plurality of drain pipes are fixedly connected to the side wall of the inner cylinder (44); the plurality of drain pipes are fixedly connected to the side wall of the outer cylinder (18); and a sewage discharge pipe is fixedly connected to the side wall of the cleaning bucket (3).

8. The automatic liquid-adding chemical analysis device according to claim 1, characterized in that: The upper end of the end cover (9) is slidably connected to a pressure frame (4), and the pressure frame (4) is fixed to the upper end of the cover plate (11). One side of the pressure frame (4) is slidably connected to two pull rods through two sliding grooves, and one end of the two pull rods is commonly fixedly connected to a rectangular frame (50). A steering gear (49) is fixedly connected in the assembly chamber, and the output end of the steering gear (49) is fixedly connected to a swing arm, and one end of the swing arm is fixedly connected to a pin shaft, and the pin shaft extends into the rectangular frame (50). The side wall of the end cover (9) is provided with a rectangular opening.

9. The automatic liquid-adding chemical analysis device according to claim 1, characterized in that: One end of the box (1) is provided with an inner concave portion, the inner concave portion is provided with a plurality of windows, the test tube rack (10) is inserted into the window, a crossbeam is provided in the test tube rack (10), the upper ends of the crossbeam and the test tube rack (10) are provided with a circular opening that matches the outer wall of the test tube (41), a silicone strip (47) is fixedly connected in the test tube rack (10), the upper end of the silicone strip (47) is provided with a plurality of grooves that match the lower end of the test tube (41), a handle is provided at one end of the test tube rack (10), and a first magnetic block (48) is fixedly connected to the other end of the test tube rack (10), and a second magnetic block (51) that matches the position of the first magnetic block (48) is fixedly connected to one side of the box (1), and the first magnetic block (48) and the second magnetic block (51) are attracted to each other.

10. The automatic liquid-adding chemical analysis device according to claim 1, characterized in that: The cleaning liquid barrel and the waste water barrel are both fixed in the chassis (2); a plunger water pump (12) is fixedly connected in the cleaning liquid barrel; a water inlet end of the plunger water pump (12) is connected to the cleaning liquid barrel via a pipeline; a water outlet end of the plunger water pump (12) is fixedly connected to a water pipe joint; and a box door is installed at one end of the chassis (2) via a hinge.

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