A fully automatic titration detection device for detecting multiple elements in a laboratory

Abstract

A laboratory device for detecting multiple elements to achieve full-automatic titration detection includes a liquid storage mechanism, a liquid pipe transverse movement mechanism, a waste liquid recovery mechanism, a titration station, a liquid pipe, and a liquid delivery mechanism. The liquid delivery mechanism includes a steel pipe plate, a downward-probing cylinder, and a stainless steel pipe. A plurality of stainless steel pipes are arranged transversely and embedded in the steel pipe plate. The stainless steel pipe can move up and down along the steel pipe plate. The liquid pipe is inserted into the stainless steel pipe and can move up and down with the stainless steel pipe. The liquid pipe is connected to the liquid storage mechanism, and the downward-probing cylinder drives the stainless steel pipe to move up and down. The stainless steel pipe is adsorbed and positioned with the steel pipe plate by magnetic attraction, and the steel pipe plate is installed on the liquid pipe transverse movement mechanism. The automatic titration device of the present invention is used in a fully automatic chemical titration detection instrument for multiple elements, and realizes fully automatic selection of a reagent, automatic liquid collection, and automatic titration of multiple storage liquids, replacing manual operation, and realizing one-machine multi-element fully automatic titration detection.

Description

Technical Field

[0001] The invention relates to the technical field of chemical concentration detection in industry, and in particular to a fully automatic titration detection device for detecting multiple elements in a laboratory. Background Art

[0002] At present, chemical titration analyzers for detecting chemical titration of multiple elements require manual operation. Most of the more advanced titration devices are simple racks, which are single devices for detecting one element and require partial manual operation. They cannot realize multi-element detection in one machine, that is, automatically selecting a reagent from a variety of storage liquids, automatically taking liquids, and automatically titrating to realize fully automatic detection of multiple elements. Summary of the invention

[0003] The purpose of the present invention is to provide a fully automatic titration detection device for detecting multiple elements in a laboratory. The automatic titration device of the present invention is used in a fully automatic chemical titration detection instrument for multiple elements, and realizes fully automatic selection of a certain reagent, automatic liquid extraction, and automatic titration of multiple storage liquids, replacing manual operation, and realizing one-machine multi-element fully automatic titration detection.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A fully automatic titration detection device for detecting multiple elements in a laboratory comprises a liquid storage mechanism, a liquid pipe transverse movement mechanism, a waste liquid recovery mechanism, a titration weighing stirrer, a liquid pipe, and a liquid delivery mechanism. The liquid delivery mechanism comprises a steel pipe plate, a downward-probing cylinder, and a stainless steel pipe. A plurality of the stainless steel pipes are longitudinally arranged and transversely arranged and embedded in the steel pipe plate. The stainless steel pipes can move up and down along the steel pipe plate. The liquid pipe is inserted into the stainless steel pipe and can move up and down with the stainless steel pipe. The liquid pipe is connected to the liquid storage mechanism. The downward-probing cylinder drives the stainless steel pipe to move up and down. The stainless steel pipe is positioned by adsorption with the steel pipe plate by magnetic attraction. The steel pipe plate is installed on the liquid pipe transverse movement mechanism.

[0006] The steel pipe plate includes a steel pipe plate A and a steel pipe plate B. The steel pipe plate A and the steel pipe plate B are fixedly connected front and back. The steel pipe plate A has a plurality of steel pipe insertion holes, and the steel pipe plate B has a plurality of longitudinal slides. Each steel pipe insertion hole corresponds to a longitudinal slide, and the steel pipe plate B is interconnected. A magnetic adsorption plate is fixed to the upper side of the steel pipe plate B.

[0007] A magnetic block is fixed on the stainless steel pipe. The stainless steel pipe is in the steel pipe insertion hole of the steel pipe plate A, and the magnetic block is in the longitudinal slideway of the steel pipe plate B.

[0008] Slide sleeves A are fixed on the stainless steel pipe, above and below the magnetic block, and slide sleeves B are fixed on the magnetic block. The outer dimensions of the slide sleeve A match the steel pipe jack, and the outer dimensions of the slide sleeve B match the longitudinal slideway. The material of the slide sleeves A and B is steel plate.

[0009] A downward probing vertical plate and an upward lifting horizontal plate are provided at the lower end of the downward probing cylinder. The downward probing vertical plate is above the magnetic suction block on the stainless steel pipe, and the upward lifting horizontal plate is below the magnetic suction block on the stainless steel pipe.

[0010] The outlet end of the liquid pipe is exposed on the stainless steel pipe, and the outlet end of the liquid pipe is fixedly connected to the stainless steel pipe in a tight fit manner through a pipe clamp.

[0011] It also includes a liquid pipe guide plate, on which a plurality of liquid pipe guide grooves are provided. The liquid pipe guide plate is fixed to the rear side of the steel pipe row plate, and the liquid pipes pass through the liquid pipe guide grooves to connect to the liquid storage mechanism.

[0012] The liquid storage mechanism comprises a liquid storage bottle, a peristaltic pump, a sleeve, and a sleeve clamp. The sleeve is fixedly connected to the steel pipe plate through the sleeve clamp. The liquid pipe passes through the sleeve and is connected to the peristaltic pump, and the peristaltic pump is connected to the liquid storage bottle.

[0013] The beaker is placed on the titration weighing stirrer through a beaker tray, which includes an upper chassis, a lower chassis, and a grabbing column. The upper chassis and the lower chassis are respectively fixed at both ends of the grabbing column. The surface of the upper chassis has multiple circular concave shapes that adapt to different beaker models, and the lower chassis is hollowed out.

[0014] A method for using a fully automatic titration detection device for detecting multiple elements in a laboratory, the method comprising:

[0015] 1) The manipulator grabs the beaker tray with the beaker and places it on the titration weighing stirrer. The liquid pipe transverse movement mechanism drives the steel pipe plate to move. The moving distance is determined by the stainless steel pipe selected for titration. The outlet end of the infusion pipe at the lower end of the stainless steel pipe is moved to the middle of the beaker mouth and then stops;

[0016] 2) At this time, the downward probe plate on the downward probe cylinder is aligned with the magnetic block on the selected stainless steel tube, the downward probe cylinder extends downward, the downward probe plate presses down against the magnetic block, and extends downward together, the stainless steel tube with the outlet end of the liquid tube extends into the test beaker bottle, the peristaltic pump starts, and the liquid in the liquid storage bottle is pumped out and drips into the beaker;

[0017] 3) The lower cylinder returns to reset. At this time, the upper lifting plate of the lower cylinder hooks the magnetic block to lift and reset. The magnetic block is adsorbed and positioned by the magnetic adsorption plate. After adsorption, there is a distance of 2-3mm between the magnetic block and the upper lifting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention is used in chemical analysis in laboratories to complete the titration work of detecting multiple elements, and can replace manual chemical titration operations or semi-automatic titration equipment. It is the main component of a fully automatic titrator. It has the functions of automatically selecting a reagent from multiple liquid storage bottles, automatically taking liquid, and automatically titrating, thereby achieving the purpose of fully automatic detection of multiple elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The invention relates to a fully automatic titration detection device for detecting multiple elements in a laboratory.

[0021] Figure 2 yes Figure 1 A partial enlarged view of middle A.

[0022] Figure 3 yes Figure 2 Enlarged view of the stainless steel liquid pipe.

[0023] Figure 4 It is a longitudinal cross-sectional view of the stainless steel liquid pipe.

[0024] Figure 5 It is a top view of the stainless steel liquid pipe.

[0025] Figure 6 yes Figure 1 A partial enlarged view of B (axonometric view of the beaker tray).

[0026] Figure 7 This is the front view of the beaker tray.

[0027] Figure 8 It is a connection diagram of liquid pipe, stainless steel pipe and pipe clamp.

[0028] Fig. 9 It is a schematic diagram of the pipe clamp structure.

[0029] Fig.10 It is a structural diagram of the beaker placement station.

[0030] In the figure: 1. Beaker tray, 2. Titration stand, 3. Stirrer, 4. Electronic scale, 5. Frame, 6. Horizontal camera, 7. Light source, 8. Horizontal camera bracket, 9. Beam I, 10. Beaker, 11. Funnel cylinder, 12. Waste liquid recovery funnel, 13. Beam II, 14. Slide, 15. Liquid storage bottle, 16. Peristaltic pump, 17. Liquid pipe, 18. Casing, 19. Steel pipe plate base, 20. Slide block, 21. Vertical camera, 22. Downward probe cylinder, 23. Longitudinal beam, 24. Beam III, 25. Downward probe cylinder seat, 26. Liquid pipe guide plate, 27. Vertical camera bracket, 28. Magnetic adsorption plate, 29. Downward probe vertical plate, 30. Lifting horizontal plate, 31. Slide rail motor, 32. Casing clamp, 33. Steel pipe plate A, 34. Steel pipe plate B, 35. Liquid pipe outlet, 36. Sleeve A, 37. Magnetic block, 38. Sleeve B, 39. Beaker tray, 40. Stainless steel pipe, 41. Pipe clamp, 42. Steel pipe jack, 43. Longitudinal slide, 44. Upper chassis, 45. Lower chassis, 46 Grabbing column, 47 Beaker rack. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0032] See Figure 1-Figure 8 A fully automatic titration detection device for detecting multiple elements in a laboratory includes a liquid storage mechanism, a liquid pipe transverse movement mechanism, a waste liquid recovery mechanism, a titration weighing stirrer, a liquid pipe 17, and a liquid delivery mechanism. The liquid delivery mechanism includes a steel pipe plate, a downward probe cylinder 22, and a stainless steel pipe 40. A plurality of the stainless steel pipes 40 are longitudinally arranged and transversely arranged and embedded in the steel pipe plate. The stainless steel pipe 40 can move up and down along the steel pipe plate. The liquid pipe is inserted into the stainless steel pipe 40 and can move up and down with the stainless steel pipe 40. The liquid pipe is connected to the liquid storage mechanism. The downward probe cylinder 22 drives the stainless steel pipe 40 to move up and down. The stainless steel pipe 40 is adsorbed and positioned with the steel pipe plate by magnetic attraction. The steel pipe plate is installed on the liquid pipe transverse movement mechanism.

[0033] The steel pipe plate includes a steel pipe plate A33 and a steel pipe plate B34. The steel pipe plate A33 and the steel pipe plate B34 are fixedly connected front and back. The steel pipe plate A33 has a plurality of steel pipe insertion holes, and the steel pipe plate B34 has a plurality of longitudinal slides. Each steel pipe insertion hole corresponds to a longitudinal slide, and the steel pipe plate B34 is interconnected. A magnetic adsorption plate 28 is fixed to the upper side of the steel pipe plate B34.

[0034] A magnetic block 37 is fixed on the stainless steel pipe 40. The stainless steel pipe 40 is in the steel pipe insertion hole of the steel pipe plate A33, and the magnetic block 37 is in the longitudinal slideway of the steel pipe plate B34.

[0035] Slide sleeves A36 are fixed on the stainless steel pipe 40, above and below the magnetic block 37, and slide sleeves B38 are fixed on the magnetic block 37. The external dimensions of the slide sleeve A36 match the steel pipe jack, and the external dimensions of the slide sleeve B38 match the longitudinal slideway. The material of the slide sleeves A36 and B38 is steel plate.

[0036] The lower end of the downward exploration cylinder 22 is provided with a downward exploration vertical plate 39 and an upward lifting horizontal plate 30 . The downward exploration vertical plate 39 is above the magnetic attraction block 37 on the stainless steel tube 40 , and the upward lifting horizontal plate 30 is below the magnetic attraction block 37 on the stainless steel tube 40 .

[0037] The liquid pipe outlet end 35 is exposed on the stainless steel pipe 40 , and the liquid pipe outlet end 35 and the stainless steel pipe 40 are fixedly connected in a tight fit manner through a pipe clamp 41 .

[0038] It also includes a liquid pipe guide plate 26, on which a plurality of liquid pipe guide grooves are provided. The liquid pipe guide plate 26 is fixed to the rear side of the steel pipe row plate, and the liquid pipe passes through the liquid pipe guide grooves to connect to the liquid storage mechanism.

[0039] The liquid tube is flexible, but when it is extended into the beaker bottle, it must be straight to enter the inside of the beaker. However, if only the liquid tube is used, the liquid tube will bend and deform at a certain length, affecting the titration into the liquid. It is easy to drip the liquid onto the wall of the beaker, affecting its chemical reaction value. The present invention adopts the method of inserting the liquid tube into the stainless steel tube 40, and fixing the liquid tube and the stainless steel tube 40 together with a tube clamp 41, which can solve the problem of bending and deformation of the liquid tube and prevent the liquid tube from moving when the steel tube is lowered.

[0040] The magnetic adsorption plate 28 is installed on the upper side of the steel pipe row plate B34. A magnetic block 37 is installed on the upper part of each stainless steel pipe 40 in a row of stainless steel pipes 40. The magnetic block 37 is made of metal iron. After the lower probe cylinder 22 is reset, the magnetic block 37 is about 2-3 mm away from the upper end of the steel pipe row plate. At this time, due to the magnetic effect, the magnetic block 37 is adsorbed onto the magnetic adsorption plate 28, thereby separating from the upper lifting horizontal plate 30. When the lower probe cylinder 22 is reset, the magnetic block 37 will be completely adsorbed and positioned by the magnetic adsorption plate 28. When the steel pipe row plate moves left and right, it will not scratch the lower probe vertical plate 29 and the upper lifting horizontal plate 30.

[0041] The back of the steel pipe row plate A33 is fixed with a steel pipe row device base 19, which is mounted on a slide block 20 that moves left and right. The slide block 20 moves left and right to stop any liquid pipe at the upper part of the middle of the designated beaker mouth. The slide 14 and the slide block 20 are driven by a guide rail motor 31.

[0042] In order to enable the stainless steel pipe 40 to move freely up and down in the steel pipe plate when it is probed and reset, a square frame of lubricating material, namely a sliding sleeve B38, is sleeved on the magnetic block 37 on the upper part of the stainless steel pipe 40. The sliding sleeve B38 moves up and down in the longitudinal slideway 43 of the steel pipe plate B.

[0043] Between the head of the stainless steel tube 40 and the sleeve clamp 32, there is a surplus of tube length when probing downward, because the stainless steel tube 40 needs a corresponding length of the liquid tube when probing downward, and the titration liquid tubes are arranged together, and the portion left when probing downward or returning is easy to be entangled with the adjacent liquid tube that has not been probing downward. The present invention designs a liquid tube guide plate 26, and each liquid tube moves up and down in its respective liquid tube guide groove when extending and returning, limiting its left and right movement. This design not only solves the entanglement problem, but also makes the arrangement of the liquid tubes very regular, thereby preventing the stainless steel tube 40 from being entangled when probing downward.

[0044] The extension and return of the lower probe cylinder 22 controls the selected stainless steel pipe 40 (i.e., the selected magnetic block 37) to move up and down. The lower probe cylinder 22 is installed on the lower probe cylinder seat 25, and the lower probe cylinder seat 25 is fixed on the crossbeam III 24. The lower probe cylinder 22 cannot move left and right, and the lower probe vertical plate 29 and the upper lifting horizontal plate 30 can move up and down with the extension and return of the lower probe cylinder 22.

[0045] When the liquid pipe is lowered, it is actually the lowering cylinder 22 that controls the stainless steel pipe 40 to move up and down. However, if the liquid pipe cannot be fixed to the stainless steel pipe 40, and the stainless steel pipe 40 is only lowered or reset, the liquid pipe will move. In order to fix the stainless steel pipe 40 and the liquid pipe as one, the present invention uses a pipe clamp 41 to tightly clamp the head below the stainless steel pipe 40 and the extended liquid pipe together, so that the liquid pipe and the stainless steel pipe 40 do not move at all. The pipe clamp 41 is a U-shaped groove structure, the upper half can be clamped into the stainless steel pipe and fit tightly with the stainless steel pipe, and the lower half clamps the liquid pipe of the leaked part of the stainless steel pipe and fits tightly with the liquid pipe. The pipe clamp 41 has a simple structure and is easy to install, and fixes the stainless steel pipe and the liquid pipe in a relatively simple structural form.

[0046] The liquid storage mechanism includes a liquid storage bottle 15, a peristaltic pump 16, a sleeve 18, and a sleeve clamp 32. The sleeve is fixedly connected to the steel pipe plate through the sleeve clamp. The liquid pipe passes through the sleeve to connect to the peristaltic pump, and the peristaltic pump is connected to the liquid storage bottle.

[0047] From the liquid storage bottle in the liquid storage tank to the steel pipe arrangement plate of the titration rack, the liquid pipe line is tortuous, and all the liquid pipes are mixed together, which will take time and effort to replace the liquid pipe. The present invention takes a short distance (no more than 8 cm) from the outlet of the peristaltic pump as the starting point, and the 20-30 cm before entering the stainless steel pipe 40 as the end point, and designs a liquid pipe outer sleeve 18, and the sleeve 18 is fixedly connected with the sleeve clamp 32, and then the sleeve clamp 32 is fixedly connected with the steel pipe arrangement plate, and the liquid pipes arranged on the steel pipe arrangement plate pass through the sleeve 18. The liquid pipe moves freely in the sleeve 18, so it becomes very easy to replace the liquid pipe.

[0048] The beaker is placed on the titration weighing stirrer through the beaker tray 1. The beaker tray 1 includes an upper chassis 44, a lower chassis 45, and a grabbing column 46. The upper chassis 44 and the lower chassis 45 are respectively fixed at both ends of the grabbing column 46. The surface of the upper chassis 44 has multiple circular concave shapes that adapt to different beaker models, and the lower chassis 45 is hollowed out.

[0049] The infusion tube needs to be emptied before titration, and the liquid tube needs to be cleaned when the titration solution is replaced. The waste liquid recovery funnel 12 is installed on the funnel cylinder 11 and is arranged at the rear lower part of the steel pipe plate. When the liquid tube needs to be emptied and cleaned, the waste liquid recovery funnel 12 is extended and retracted when entering the titration working state.

[0050] A color recognition camera is installed above the beaker 10 to determine the color endpoint of the titration experiment.

[0051] The gripping column 46 of the beaker tray 1 is gripped by a manipulator, and the manipulator program only needs to design a set of gripping actions. Otherwise, different gripping action programs need to be designed for different beaker diameters (conical bottles, straight-mouth bottles) and heights, which brings a lot of work to the debugging of the manipulator and occupies a lot of control system resources. In addition, the lower chassis is designed to be hollowed out, the purpose of which is to reduce the weight of the beaker tray 10, reduce the range of the electronic scale 4, and reduce the range accuracy requirements of the electronic scale to reduce costs.

[0052] The titration weighing agitator includes an electronic scale 4 and an agitator 3, and the specific scheme adopts the technical content disclosed in the patent document CN201921832607.0.

[0053] The multi-element detection fully automatic chemical titration device of the present invention is supported by two vertical frames 5, and three crossbeams (crossbeam I9, crossbeam II13, crossbeam III24) and two longitudinal beams 23 to form a titration support. The crossbeam I9 is ​​equipped with a funnel cylinder 11, and the cylinder is equipped with a waste liquid recovery funnel 12; the crossbeam II13 is vertically equipped with a slide table 14 controlled by a stepping motor, the steel pipe arrangement device base 19 is installed on the slide block 20, and the steel pipe arrangement plate is installed on the steel pipe arrangement device base 19, and the stainless steel pipe 40 is embedded in the steel pipe arrangement plate, and the front end of the liquid pipe outlet end 35 is exposed 1 cm outside the liquid pipe, and the pipe clamp 41 fixes the lower end of the stainless steel pipe 40 and the liquid pipe outlet end 35 in a tight fit. A liquid pipe guide plate 26 is installed above the rear side of the steel pipe arrangement plate A33. The liquid pipe passes through the liquid pipe guide groove and moves up and down when the liquid pipe is lowered. The sleeve clamp 32 is vertically connected to the steel pipe arrangement device base 19 and the liquid pipe guide plate 26. The crossbeam III 24 is installed on two longitudinal beams 23 perpendicular to the frame 5. A vertical camera 21 and a downward-probing cylinder base 25 are installed on the crossbeam III 24. A downward-probing cylinder 22 is installed on the downward-probing cylinder base 25. A downward-probing vertical plate 29 and an upward-lifting horizontal plate 30 are installed on the piston rod of the downward-probing cylinder 22. A magnetic block 37 is fixedly connected to the upper part of the stainless steel pipe 40. The magnetic block 37 is made of iron metal. A non-metallic sliding sleeve B38 is sleeved at the root of the magnetic block 37. The sliding sleeve B38 is installed in the longitudinal slideway of the steel pipe plate B and slides up and down. A magnetic adsorption plate 28 is installed on the upper side of the steel pipe plate B. When not working, all the magnetic blocks 37 are adsorbed by the magnetic adsorption plate 28. A plurality of liquid storage bottles 15 and a plurality of peristaltic pumps 16 are stored in the liquid storage box. The inlet end of the liquid tube 17 of the peristaltic pump 16 is inserted into the liquid storage bottle 15 , and the output end of the peristaltic pump 16 passes through the sleeve 18 and then passes through the liquid tube guide plate 26 and then out of the stainless steel tube 40 .

[0054] A method for using a fully automatic titration detection device for detecting multiple elements in a laboratory, the method comprising:

[0055] 1) The robot is placed on the beaker stand 47 (see Fig. 9 ) clamps the beaker tray 1 carrying the beaker 10 and places it on the agitator 3 of the titration weighing agitator, then the PLC controls the slide rail motor 31 of the liquid pipe transverse movement mechanism to rotate, the slide block 20 of the slide table moves, and drives the steel pipe arrangement device base 19 of the steel pipe arrangement plate to move accordingly, and the moving distance is determined by the stainless steel pipe 40 selected to be titrated, that is, the infusion pipe outlet end 35 is selected, and the infusion pipe outlet end 35 at the lower end of the stainless steel pipe 40 is moved to the middle of the beaker 10 mouth and then stopped;

[0056] 2) At this time, the downward probe plate 29 on the downward probe cylinder 22 is aligned with the magnetic block 37 on the selected stainless steel tube 40, the downward probe cylinder 22 extends downward, the downward probe plate 29 presses downward against the magnetic block 37, and they extend downward together, the stainless steel tube 40 with the liquid tube outlet end 35 extends into the test beaker bottle, the peristaltic pump 16 starts, and the liquid in the liquid storage bottle is pumped out and drips into the beaker.

[0057] 3) While titrating, the experimental conditions are judged according to the color until the titration is completed (the color remains unchanged). The titrated liquid volume data is fed back by the electronic balance of the titration weighing stirrer. After the titration is completed, the lower probe cylinder 22 returns to reset. At this time, the upper lifting horizontal plate 30 of the lower probe cylinder hooks the magnetic suction block 37 to lift and reset. The magnetic suction block 37 is adsorbed and positioned by the magnetic adsorption plate 28, and the liquid pipe outlet end 35 returns to restore to a horizontal plane with the other liquid pipe outlet ends;

[0058] When the steel pipe plate moves left and right, all the components installed on it move with it. The lowering cylinder 22 is fixed on the crossbeam III 24. The magnetic block 37 on the stainless steel pipe 40 passes left and right between the lowering vertical plate 29 and the upper horizontal plate 30 as the steel pipe plate moves. When a liquid pipe is selected, the magnetic block 37 on the stainless steel pipe 40 of the liquid pipe jacket stops exactly between the lowering vertical plate 29 and the upper horizontal plate 30. The lowering cylinder 22 moves up and down, which can drive the stainless steel pipe 40 and the liquid pipe to move up and down.

[0059] 4) Cleaning of the liquid pipe: replace the liquid in the liquid storage bottle 15 used for the liquid pipe to be cleaned with distilled water, start the funnel cylinder 11 in the waste liquid recovery mechanism to push out the waste liquid recovery funnel 12, and control the movement of the slide block 20 on the liquid pipe transverse mechanism by PLC to drive the steel pipe plate to move left and right, so that the outlet end 35 of the liquid pipe to be cleaned is just above the waste liquid recovery funnel 12, and start the peristaltic pump 16 to pump liquid for cleaning.

Claims

1. A fully automatic titration detection device for detecting multiple elements in a laboratory, comprising a liquid storage mechanism, a liquid tube lateral movement mechanism, a waste liquid recovery mechanism, a titration weighing stirrer, and a liquid tube, characterized in that: It also includes a liquid delivery mechanism, which includes a steel pipe row plate, a downward-probing cylinder, and a stainless steel pipe. A plurality of the stainless steel pipes are longitudinally arranged and transversely arranged and embedded in the steel pipe row plate. The stainless steel pipes can move up and down along the steel pipe row plate. The liquid pipes are inserted into the stainless steel pipes and can move up and down with the stainless steel pipes. The liquid pipes are connected to the liquid storage mechanism. The downward-probing cylinder drives the stainless steel pipes to move up and down. The stainless steel pipes are adsorbed and positioned with the steel pipe row plate by magnetic attraction. The steel pipe row plate is installed on the liquid pipe transverse movement mechanism. The steel pipe plate comprises a steel pipe plate A and a steel pipe plate B. The steel pipe plate A and the steel pipe plate B are fixedly connected front and back. The steel pipe plate A has a plurality of steel pipe insertion holes. The steel pipe plate B has a plurality of longitudinal slideways. Each steel pipe insertion hole corresponds to a longitudinal slideway and is interconnected. A magnetic adsorption plate is fixed to the upper side of the steel pipe plate B. A magnetic block is fixed on the stainless steel pipe, the stainless steel pipe is in the steel pipe insertion hole of the steel pipe plate A, and the magnetic block is in the longitudinal slideway of the steel pipe plate B; A sliding sleeve A is fixed on the stainless steel pipe, above and below the magnetic block, and a sliding sleeve B is fixed on the magnetic block. The outer dimension of the sliding sleeve A matches the steel pipe jack, and the outer dimension of the sliding sleeve B matches the longitudinal slideway. The material of the sliding sleeve A and the sliding sleeve B is a steel plate. The lower end of the downward-exploring cylinder is provided with a downward-exploring vertical plate and an upward-lifting horizontal plate, wherein the downward-exploring vertical plate is above the magnetic suction block on the stainless steel tube, and the upward-lifting horizontal plate is below the magnetic suction block on the stainless steel tube; The outlet end of the liquid pipe is exposed on the stainless steel pipe, and the outlet end of the liquid pipe is fixedly connected to the stainless steel pipe in a tight fit manner through a pipe clamp; It also includes a liquid pipe guide plate, on which a plurality of liquid pipe guide grooves are provided. The liquid pipe guide plate is fixed to the rear side of the steel pipe row plate, and the liquid pipes pass through the liquid pipe guide grooves to connect to the liquid storage mechanism.

2. A fully automatic titration detection device for detecting multiple elements in a laboratory according to claim 1, characterized in that: The liquid storage mechanism comprises a liquid storage bottle, a peristaltic pump, a sleeve, and a sleeve clamp. The sleeve is fixedly connected to the steel pipe plate through the sleeve clamp. The liquid pipe passes through the sleeve and is connected to the peristaltic pump, and the peristaltic pump is connected to the liquid storage bottle.

3. A fully automatic titration detection device for detecting multiple elements in a laboratory according to claim 1, characterized in that: The beaker is placed on the titration weighing stirrer through a beaker tray, which includes an upper chassis, a lower chassis, and a grabbing column. The upper chassis and the lower chassis are respectively fixed at both ends of the grabbing column. The surface of the upper chassis has multiple circular concave shapes that adapt to different beaker models, and the lower chassis is hollowed out.

4. A method for using the laboratory device for detecting multiple elements to realize full-automatic titration detection as claimed in any one of claims 1 to 3, characterized in that the method include: 1) The manipulator grabs the beaker tray with the beaker and places it on the titration weighing stirrer. The liquid pipe lateral movement mechanism drives the steel pipe plate to move. The moving distance is determined by the stainless steel pipe selected for titration. The outlet of the infusion pipe at the lower end of the stainless steel pipe is moved to the middle of the beaker mouth and then stops. 2) At this time, the downward probe plate on the downward probe cylinder is aligned with the magnetic block on the selected stainless steel tube, the downward probe cylinder extends downward, the downward probe plate presses down against the magnetic block, and extends downward together, the stainless steel tube with the outlet end of the liquid tube extends into the test beaker bottle, the peristaltic pump starts, and the liquid in the liquid storage bottle is pumped out and drips into the beaker; 3) After the titration is completed, the lower probe cylinder returns to reset. At this time, the upper lifting plate of the lower probe cylinder hooks the magnetic block to lift and reset. The magnetic block is adsorbed and positioned by the magnetic adsorption plate. After adsorption, there is a distance of 2-3mm between the magnetic block and the upper lifting plate.

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