CN113219186B - Full-automatic heavy metal analyzer - Google Patents

Abstract

The invention provides a full-automatic heavy metal analyzer, comprising: the device comprises a supporting table, a liquid-transferring and tube-transferring unit, a lofting and mixing unit, a test tube cleaning unit, a centrifugal mixing unit, a liquid supply unit and a sample detection unit, wherein the liquid-transferring and tube-transferring unit is arranged on the upper portion of the supporting table, the lofting and mixing unit, the test tube cleaning unit, the centrifugal mixing unit, the liquid supply unit and the sample detection unit are arranged on the lower portion of the supporting table, and the liquid-transferring and tube-transferring unit is used for moving a test tube in the lofting and mixing unit to the centrifugal mixing unit or the liquid supply unit or the product detection unit or carrying out centrifugal mixing on a reagent in a test tube or carrying out liquid preparation in the test tube or detecting or cleaning the reagent in the test tube after the test tube cleaning unit. The advantages are that: each unit structure with the design is integrated on the supporting bench to constitute one and follow lofting, join in marriage liquid, centrifugation, mixing in automatic heavy metal detection structure of an organic whole, realize heavy metal's automated inspection, need not personnel on duty, labour saving and time saving.

Description

Full-automatic heavy metal analyzer

Technical Field

The invention belongs to the technical field of heavy metal analyzers, and particularly relates to a full-automatic heavy metal analyzer.

Background

Under the trend of automation of instrument operation, the traditional sample pretreatment mode for manually and stepwise detecting is quite inconvenient, consumes a great amount of time and repeated operation, and simultaneously has the problem of poor operation consistency and influences the detection result.

Disclosure of Invention

The invention provides a full-automatic heavy metal analyzer, which aims to at least overcome the technical defects, realizes the automatic treatment from the whole process of lofting, liquid preparation, centrifugation and uniform mixing through a multifunctional integrated structure, and automatically performs relevant detection and then displays the detection result.

In order to achieve the above object, the present invention provides the following technical solutions:

a fully automatic heavy metal analyzer, comprising: the device comprises a supporting table, a liquid-transferring and tube-transferring unit, a lofting and mixing unit, a test tube cleaning unit, a centrifugal mixing unit, a liquid supply unit and a sample detection unit, wherein the liquid-transferring and tube-transferring unit is arranged on the upper portion of the supporting table, the lofting and mixing unit, the test tube cleaning unit, the centrifugal mixing unit, the liquid supply unit and the sample detection unit are arranged on the lower portion of the supporting table, and the liquid-transferring and tube-transferring unit is used for moving a test tube in the lofting and mixing unit to the centrifugal mixing unit or the liquid supply unit or the product detection unit or carrying out centrifugal mixing on a reagent in a test tube or carrying out liquid preparation in the test tube or detecting or cleaning the reagent in the test tube after the test tube cleaning unit.

Further, the supporting table comprises an operation table with an accommodating space, a left side plate, a right side plate, a rear side plate, an L-shaped upper cover plate, a display screen connected with a power supply, a transverse supporting plate and a sliding rail, wherein the accommodating space of the operation table is internally used for accommodating the lofting mixing unit, the test tube cleaning unit, the centrifugal mixing unit, the liquid supply unit and the sample detection unit, the lofting mixing unit, the test tube cleaning unit, the centrifugal mixing unit and the upper part of the sample detection unit extend out of the upper end face of the operation table, the liquid supply unit is positioned below the upper end face of the operation table, and a liquid taking port of the liquid supply unit corresponds to a round hole formed in the upper end face of the operation table and is used for taking a reagent into the liquid taking port through the round hole;

the left side plate, the right side plate and the rear side plate are respectively and vertically connected with the left side, the right side and the rear side of the upper end face of the operating platform, and the left side, the right side and the rear side of the L-shaped upper cover plate are respectively connected with the upper end faces of the left side plate, the right side plate and the rear side plate, so that the pipetting and pipetting unit, the lofting and mixing unit, the test tube cleaning unit, the centrifugal and mixing unit, the liquid supply unit and the sample detection unit are all positioned in a space formed by the operating platform, the left side plate, the right side plate and the rear side plate; the display screen is arranged on the short side of the L-shaped upper cover plate, and the short side of the L-shaped upper cover plate is parallel to the rear side plate;

The two ends of the transverse supporting plate and the two ends of the sliding rail are respectively and vertically connected with the left side plate and the right side plate, the transverse supporting plate is positioned on one side close to the rear side plate, the sliding rail is positioned on one side away from the rear side plate, and the transverse supporting plate is used for supporting a first linear motor in the X direction of the pipetting unit; and the second linear motor in the Y direction of the pipetting and pipette unit slides on the slide rail.

Further, the pipetting unit further comprises a Z-shaped connecting piece, a Z-direction connecting piece, a third linear motor arranged in the Z-axis direction, a transverse bearing plate, two plunger pumps, two L-shaped guide wheel frames, two Y-axis guide wheels, a sampling needle fixing plate, a first electric sliding table, an electric clamping jaw, a sampling needle fixing piece and two sampling needles, wherein one side of the two mutually parallel sides of the Z-shaped connecting piece is connected with a sliding block on the first linear motor, the other side of the Z-shaped connecting piece is connected with a base on the second linear motor, the upper part of the Z-direction connecting piece is connected with the sliding block of the second linear motor, the lower part of the Z-direction connecting piece is connected with a base of the third linear motor, and the second linear motor is positioned on one side, deviating from the third linear motor, of the Z-direction connecting piece; an L-shaped guide wheel frame is arranged at one end, far away from the first linear motor, of the third linear motor, the long side of the L-shaped guide wheel frame is fixed on a base of the third linear motor and is away from the Z-direction connecting piece, and the short side of the L-shaped guide wheel frame is fixed at the bottom of the third linear motor and is parallel to the first linear motor, so that two Y-axis guide wheels are respectively arranged on the short side of the L-shaped guide wheel frame and slide along the sliding rail;

A vertical connecting piece which is fixed on two pairs of vertical edges of the Z-direction connecting piece is symmetrically arranged on one side of the transverse bearing plate, the vertical connecting piece and the third linear motor are arranged in the same direction, and two plunger pumps are fixed on the upper part of the transverse bearing plate and are connected with the sampling needle through a hose;

the sampling needle fixing plate is characterized in that one face of the sampling needle fixing plate is fixed on the sliding block of the third-size linear motor, the other face of the sampling needle fixing plate is fixed with the first-size electric sliding table, the base of the first-size electric sliding table is fixed with the electric clamping jaw, and the two sampling needles are connected with the sliding block on the first-size electric sliding table through the sampling needle fixing piece, so that the first-size electric sliding table drives the sampling needles to move up and down.

Furthermore, the transverse bearing plate is also provided with an air pressure module, and two interfaces of the air pressure module are respectively connected with a suction port of a plunger pump through a T-shaped connector.

Further, the lofting mixing unit comprises an L-shaped rotary table fixing frame, a second electric sliding table, a test tube plug opening piece, a third electric sliding table, an electric rotary table, a test tube rotating frame, an L-shaped test tube clamping head adapter, a clamping jaw fixing piece and clamping jaws, wherein the second electric sliding table is connected with the vertical edge of the L-shaped rotary table fixing frame through an upper base of the second electric sliding table, and the test tube plug opening piece is connected with a sliding block of the second electric sliding table; the test tube stopper opening piece is positioned above the test tube rotating frame and used for opening a stopper of a test tube on the test tube rotating frame; the L-shaped test tube clamping head adapter is positioned below the second electric sliding table, one side of the L-shaped test tube clamping head adapter is vertically fixed on the vertical edge of the L-shaped rotary table fixing frame, the third electric sliding table is fixed on one side of the other side of the L-shaped rotary table fixing frame facing the test tube rotary frame through screws, one end of the clamping jaw fixing piece is connected with the sliding block of the third electric sliding table, the clamping jaw is fixed on the other end of the clamping jaw fixing piece, and the opening of the clamping jaw faces the test tube rotary frame; the L-shaped test tube clamping head adapter and the third electric sliding table are positioned on the upper part of the electric rotating table;

The test tube plug opening piece comprises a rotating motor, a T-shaped lifting frame, a rotating shaft, a connecting disc provided with a movable hole, a U-shaped alignment frame, two connecting columns and two plug opening blocks, wherein the rotating motor is fixed on the long side of the T-shaped lifting frame, an output shaft of the rotating motor is sleeved at the upper end of the rotating shaft and fixed through screws, the lower end of the rotating shaft is integrally formed with the upper end face of the connecting disc, and the short side of the T-shaped lifting frame is connected with a sliding block on the second electric sliding table;

the opening of the U-shaped alignment frame faces to the long side of the T-shaped lifting frame and is fixed with the long side of the T-shaped lifting frame, and the test tube perforation is formed on one side of the U-shaped alignment frame, which is away from the opening, so that the upper part of a test tube penetrates into the U-shaped alignment frame from the bottom of the test tube perforation; the rotating shaft, the connecting disc, the connecting columns and the opening blocks are all positioned in the opening grooves of the U-shaped alignment frame, the bottom of each connecting column is connected with one opening block, the upper end of each connecting column penetrates through the movable hole, and the opening blocks are movably connected to the edge of one side, away from the opening, of the U-shaped alignment frame;

the second electric sliding table in the lofting mixing unit, the part above the bottom of the U-shaped alignment frame and the upper part of the test tube are all located above the operating table surface.

Further, the cuvette washing unit comprises: the U-shaped cleaning tank comprises a U-shaped cleaning tank frame, a cleaning tank cover, at least two liquid exchange bottles, a washing tank, a water pump, a pump frame, an electromagnetic switch and a cleaning valve, wherein the opening direction of the U-shaped cleaning tank frame faces the left side plate, and the cleaning tank cover is hinged to the upper part of the U-shaped cleaning tank frame and is exposed above the upper end surface of the operating platform; the liquid exchange bottle is vertically arranged in an opening groove of the U-shaped cleaning tank frame, the washing groove, the water pump, the pump frame, the electromagnetic switch and the cleaning valve are both positioned on the back vertical face of the opening groove on the U-shaped cleaning tank frame, the washing groove, the pump frame and the U-shaped cleaning tank frame are fixedly fixed, the washing groove is positioned on the upper portion of the pump frame, and the water pump, the electromagnetic switch and the electromagnetic switch are connected with the cleaning valve and are all fixed on the pump frame.

Further, the centrifugal mixing unit includes: the device comprises a servo motor, a bearing frame, a mixing ball table, a photoelectric sensor, an eccentric mixing frame, a return retainer ring, a centrifugal fixing disc and a test tube clamp, wherein the servo motor is positioned in the bearing frame, an output shaft of the servo motor extends out of the top end surface of the bearing frame and into the mixing ball table, and the photoelectric sensor is positioned on the top end surface of the bearing frame; the eccentric mixing rack is sleeved on the mixing ball table and is eccentrically arranged with the mixing ball table, and a gap is reserved between the upper end surface of the mixing ball table and the upper part of the eccentric mixing rack; the return check ring and the centrifugal fixing disc are sequentially stacked on the eccentric mixing frame from bottom to top, the eccentric mixing frame is connected with the centrifugal fixing disc through screws, and the test tube clamp is connected with the fixing sheets arranged on the circumference of the centrifugal fixing disc through bolts;

Wherein, mixing ball table includes: the device comprises a hemispherical body, a lower bottom cover of a mixing ball table, a conversion pressing sheet and balls, wherein a through hole is formed in the hemispherical body along the axial direction of the hemispherical body, a key slot connected with a servo motor is formed in the through hole, the lower bottom cover of the mixing ball table is fixed on the bottom end surface of the hemispherical body, a fixing groove concentric with the hemispherical body is formed in the upper end surface of the hemispherical body, at least three grooves are uniformly distributed on the upper end surface of the hemispherical body along the circumferential direction at intervals, and the grooves are communicated with the fixing groove; at least three arc grooves are uniformly distributed on the circumferential surface of the hemispherical body at intervals, the upper ends of the arc grooves are communicated with the grooves, and the lower ends of the arc grooves are connected with the bottom end surface of the hemispherical body; the ball is positioned in the arc-shaped groove;

the conversion preforming is along its circumferencial direction interval equipartition have the circle type structure of at least three dog, make by the fixed slot the structure that the recess constitutes with conversion preforming adaptation, just the outward flange protrusion of dog the outward flange of recess makes the ball is located under the dog.

Further, the liquid supply unit includes: the reagent bottle rack is of a cuboid structure with an open top surface and a side surface, the top surface of the reagent bottle rack corresponds to the round hole, the liquid supply reagent bottle is arranged in the reagent bottle rack, the liquid supply cover push-pull rack is connected with one side of the side surface opening of the reagent bottle rack, and the short side of the L-shaped push-pull rod fixing plate is fixedly connected with the liquid supply cover push-pull rack and the long side of the L-shaped push-pull rod fixing plate is fixedly connected with the base of the fourth electric sliding table; the sliding block of the fourth electric sliding table is connected with a push-pull rod on the liquid supply cover push-pull frame through a liquid supply adapter, so that the push-pull rod drives a reagent bottle push-pull cover plate connected with the push-pull rod to open and close the liquid supply reagent bottle;

The liquid supply cover push-pull frame further comprises a liquid supply fixing plate, blocks used for bearing the push-pull rods and a movable cross rod used for connecting the reagent bottle push-pull cover plates, wherein the liquid supply fixing plate is connected with one side of the side opening of the reagent bottle placing frame and is perpendicular to the bottom end surface of the reagent parallel placing frame, each block is fixed on the top end surface of the liquid supply fixing plate and corresponds to one push-pull rod, one reagent bottle push-pull cover plate and one reagent bottle, after the push-pull rod penetrates through the block, one end of each push-pull rod is connected with the corresponding fourth electric sliding table in a sliding manner through the liquid supply adapter, and the other end of each push-pull rod is connected with the corresponding fourth electric sliding table through the movable cross rod, so that the fourth electric sliding table drives the push-pull rods, the movable cross rod and the reagent bottle push-pull cover plates to move to open and close the liquid supply reagent bottles in sequence;

the short side of the L-shaped push-pull rod fixing plate is fixedly connected with the liquid supply fixing plate.

Further, the sample detection unit is a detector for detecting the performance of the reagent.

The full-automatic heavy metal analyzer has the advantages that:

1. The instrument integrates each designed unit structure on the supporting table to form an automatic heavy metal detection structure integrating lofting, liquid preparation, centrifugation and uniform mixing, so that automatic detection of heavy metals is realized, personnel are not required to watch, and time and labor are saved;

2. the structural design of the pipetting unit can realize the problems of accurate positioning and displacement on the operation table;

3. the pipetting and pipette unit can move the test tube in the lofting and mixing unit to the centrifugal and mixing unit, the liquid supply unit, the product detection unit or the test tube cleaning unit, and then centrifugally mix the reagent in the test tube, or mix the liquid in the test tube, or detect or clean the reagent in the test tube;

4. the printer, the sample detection unit and the structural design that the display screen is electrically connected with the PLC on the supporting table enable the sample to be displayed on the display screen after being detected and printed out through the printer.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic perspective view of a full-automatic heavy metal analyzer according to the present invention;

FIG. 2 is a schematic perspective view of a full-automatic heavy metal analyzer with an L-shaped upper cover plate removed;

FIG. 3 is a schematic view of the structure of the support platform with the L-shaped upper cover plate removed;

FIG. 4 is a perspective view of a pipetting unit;

FIG. 5 is a schematic perspective view of another view of the pipetting unit;

fig. 6 and fig. 7 are schematic perspective views of different angles of the lofting and blending unit;

fig. 8 is a schematic perspective view of a test tube stopper opener in the lofting mixing unit;

fig. 9 and 10 are schematic perspective views of different view angles of the tube cleaning unit;

fig. 11 is a schematic perspective view of a centrifugal mixing unit;

FIG. 12 is a schematic perspective view of the centrifugal mixing unit with the protective cover removed;

fig. 13, 14 and 15 are schematic perspective views of the centrifugal mixing unit with part of the structure removed;

fig. 16 and 17 are schematic perspective views of different angles of view of the blending table;

FIG. 18 is a schematic perspective view of a liquid supply unit;

wherein:

support table 100, operation table 101, left side plate 102, right side plate 103, back side plate 104, L-shaped upper cover plate 105, display screen 106, transverse support plate 107, slide rail 108, and round hole 109;

Pipetting pipette unit 200, first-order linear motor 201, second-order linear motor 202, Z-type connector 203, Z-direction connector 204, third-order linear motor 205, horizontal carrier plate 206, plunger pump 207, L-shaped guide wheel frame 208, Y-axis guide wheel 209, sampling needle fixing plate 210, first-order electric sliding table 211, electric clamping jaw 212, sampling needle fixing piece 213, sampling needle 214, vertical connector 215 and air pressure module 216;

the sample laying and mixing unit 300, an L-shaped rotary table fixing frame 301, a second electric sliding table 302, a test tube plug opening piece 303, a third electric sliding table 304, an electric rotary table 305, a test tube rotating frame 306, an L-shaped test tube clamping head adapter 307, a clamping jaw fixing piece 308, clamping jaws 309, clamping grooves 310, a rotating motor 311, a T-shaped lifting frame 312, a rotating shaft 313, a movable hole 314, a connecting disc 315, a U-shaped alignment frame 316, a connecting column 317, a plug opening piece 318 and a test tube perforation 319;

test tube cleaning unit 400, U-shaped cleaning tank frame 401, cleaning tank cover 402, liquid exchange bottle 403, washing tank 404, water pump 405, pump frame 406, electromagnetic switch 407, cleaning valve 408,

Centrifugal mixing unit 500, servo motor 501, carrier 502, mixing bowl 503, photoelectric sensor 504, eccentric mixing bowl 505, return retainer 506, centrifugal fixture 507, test tube holder 508, latch 509, stator 510, hemispherical body 511, mixing bowl lower bottom cover 512, conversion pad 513, ball 514, through hole 515, key slot 516, fixing bowl 517, groove 518, arc slot 519, stop 520, concentric shaft 521, eccentric mixing bowl 522, tripod stand 523, upper stand 524, arc bottom bracket 525, stand 526, test tube hole 527, inclined slot 528, fixing block 529, U-shaped slot 530, protective cover 531, arc slot 519,

The liquid supply unit 600, the reagent bottle placing frame 601, the liquid supply reagent bottle 602, the liquid supply cover push-pull frame 603, the L-shaped push-pull rod fixing plate 604, the fourth electric sliding table 605, the push-pull rod 606, the reagent bottle push-pull cover plate 607, the liquid supply fixing plate 608, the square 609 and the movable cross rod 610;

a sample detection unit 700.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.

In order to realize automatic analysis of heavy metal, save time and labor, as shown in fig. 1 and 2, a full-automatic heavy metal analyzer is provided, comprising: the sample transfer and mixing device comprises a support table 100, a pipetting and tube transfer unit 200, a lofting and mixing unit 300, a tube cleaning unit 400, a centrifugal and mixing unit 500, a liquid supply unit 600 and a sample detection unit 700, wherein the pipetting and tube transfer unit 200 is arranged at the upper part of the support table 100, the lofting and mixing unit 300, the tube cleaning unit 400, the centrifugal and mixing unit 500, the liquid supply unit 600 and the sample detection unit 700 are arranged at the lower part of the support table 100, and the pipetting and tube transfer unit 200 is used for moving a test tube in the lofting and mixing unit 300 to the centrifugal and mixing unit 500, the liquid supply unit 600, the product detection unit or the tube cleaning unit 400, and then centrifugally mixing a reagent in the test tube, or preparing a liquid in the test tube, or detecting or cleaning the reagent in the test tube;

The pipetting and pipette unit 200, the lofting and mixing unit 300, the test tube cleaning unit 400, the centrifugal and mixing unit 500, the liquid supply unit 600 and the sample detection unit 700 are all electrically connected with a PLC, and the PLC is used for effectively controlling the on-off or movement of each unit of the analyzer.

Further, the sample detection unit 700 is a detector for detecting the performance of a reagent, and is commercially available.

In a specific embodiment, as shown in fig. 3, the support table 100 includes an operation table 101 with a containing space, a left side plate 102, a right side plate 103, a rear side plate 104, an L-shaped upper cover plate 105, a display screen 106 connected to a power supply, a lateral support plate 107, and a slide rail 108, where the containing space of the operation table 101 is used to contain the lofting mixing unit 300, the test tube cleaning unit 400, the centrifugal mixing unit 500, the liquid supply unit 600, and the sample detection unit 700, and the upper parts of the lofting mixing unit 300, the test tube cleaning unit 400, the centrifugal mixing unit 500, and the sample detection unit 700 extend above the upper end surface of the operation table 101, and the liquid supply unit 600 is located below the upper end surface of the operation table 101, and a liquid taking port of the liquid supply unit 600 corresponds to a circular hole 109 formed on the upper end surface of the operation table 101, so as to take a reagent into the liquid taking port through the circular hole 109;

The left side plate 102, the right side plate 103 and the rear side plate 104 are respectively and vertically connected with the left side, the right side and the rear side of the upper end face of the operation table 101, and the left side, the right side and the rear side of the L-shaped upper cover plate 105 are respectively connected with the upper end faces of the left side plate 102, the right side plate 103 and the rear side plate 104, so that the pipetting and pipetting unit 200, the lofting and mixing unit 300, the test tube cleaning unit 400, the centrifugal and mixing unit 500, the liquid supply unit 600 and the sample detection unit 700 are all positioned in a space formed by the operation table 101, the left side plate 102, the right side plate 103 and the rear side plate 104; the display screen 106 is mounted on a short side of the L-shaped upper cover plate 105, and the short side of the L-shaped upper cover plate 105 is parallel to the rear side plate 104;

the two ends of the lateral support plate 107 and the slide rail 108 are respectively and vertically connected with the left side plate 102 and the right side plate 103, the lateral support plate 107 is located at a side close to the rear side plate 104, the slide rail 108 is located at a side away from the rear side plate 104, and the lateral support plate 107 is used for supporting a first linear motor 201 in the X direction of the pipetting unit 200; the second linear motor 202 in the Y direction of the pipetting and pipette unit 200 slides on the slide rail 108, and the structural design of the support table 100 can effectively integrate the units into a whole, and the units can be placed in order, so that the work of the units can be performed in order, and meanwhile, the maintenance of the units is convenient; the size of the structure can be set according to actual requirements.

Preferably, the detection unit is electrically connected to the display screen 106, so that the detected result is fed back to the display screen 106 for the staff to check; the display screen 106 is provided with a liquid dispensing and pipetting parameter setting function, parameters can be adjusted according to different detection requirements, namely multichannel sample processing is realized, detection results are displayed on the display screen 106, and meanwhile, the structure is automatically stored.

The PLC controller can be externally connected with the supporting table 100 or can be installed on the supporting table 100, and is selected according to actual requirements.

In a specific embodiment, as shown in fig. 4 and 5, the pipette unit 200 further includes a Z-shaped connector 203, a Z-shaped connector 204, a No. three linear motor 205 disposed in the Z-axis direction, a transverse bearing plate 206, two plunger pumps 207, an L-shaped guide wheel frame 208, two Y-axis guide wheels 209, a sampling needle fixing plate 210, a No. one electric sliding table 211, an electric clamping jaw 212, a sampling needle fixing piece 213, and two sampling needles 214, wherein two mutually parallel sides of the Z-shaped connector 203 are connected with a sliding block on the No. one linear motor 201 on one side, and the other side is connected with a base on the No. two linear motor 202, an upper portion of the Z-shaped connector 204 is connected with the sliding block of the No. two linear motor 202, a lower portion is connected with the base of the No. three linear motor 205, and the No. two linear motors 202 are located on one side of the Z-shaped connector 204, which is away from the No. three linear motors 205; an L-shaped guide wheel frame 208 is disposed at one end of the third linear motor 205 far away from the first linear motor 201, a long side of the L-shaped guide wheel frame 208 is fixed on the base of the third linear motor 205 and is away from the Z-direction connecting piece 204, and a short side is fixed at the bottom of the third linear motor 205 and is disposed parallel to the first linear motor 201, so that two Y-axis guide wheels 209 are respectively disposed on a short side of the L-shaped guide wheel frame 208 and slide along the slide rail 108;

A vertical connecting piece 215 for fixing the vertical connecting piece 215 to two pairs of vertical edges of the Z-direction connecting piece 204 is symmetrically arranged on one side of the transverse bearing plate 206, the vertical connecting piece 215 and the third linear motor 205 are arranged in the same direction, two plunger pumps 207 are fixed on the upper part of the transverse bearing plate 206, and the plunger pumps 207 are connected with the sampling needle 214 through a hose;

the sampling needle fixing plate 210 is fixed on one surface of the sliding block of the third-size linear motor 205, the first-size electric sliding table 211 is fixed on the other surface of the sliding block, the electric clamping jaw 212 is fixed on the base of the first-size electric sliding table 211, and the two sampling needles 214 are connected with the sliding block on the first-size electric sliding table 211 through the sampling needle fixing piece 213, so that the first-size electric sliding table 211 drives the sampling needles 214 to move up and down.

The sampling needle fixing member 213 is located at one side of the first-size electric sliding table 211 and is arranged in parallel with the first-size electric sliding table at intervals.

Further, an air pressure module 216 is further disposed on the horizontal carrier plate 206, and two interfaces of the air pressure module 216 are respectively connected with a suction port of a plunger pump 207 through a T-shaped connector.

In a specific operation process, two hoses are taken, one ends of the two hoses are respectively connected with one ends of the two plunger pumps 207, and the other ends of the two hoses are respectively connected with liquid inlets of the two sampling needles 214, so that after the plunger pumps 207 are started, sampling and lofting are performed through the sampling needles 214;

The PLC controller is electrically connected with the plunger pump 207, the air pressure module 216, the third linear motor 205, the first electric sliding table 211 and the electric clamping jaw 212, and is used for controlling the work of the plunger pump 207, the air pressure module 216 and the electric clamping jaw 212.

In a specific embodiment, as shown in fig. 6 to 8, the lofting mixing unit 300 includes an L-shaped turntable fixing frame 301, a second electric sliding table 302, a test tube plug opening member 303, a third electric sliding table 304, an electric rotating table 305, a test tube rotating frame 306, an L-shaped test tube clamping head adapter 307, a clamping jaw fixing member 308, and a clamping jaw 309, wherein the second electric sliding table 302 is connected with a vertical edge screw of the L-shaped turntable fixing frame 301 through an upper base thereof, and the test tube plug opening member 303 is connected with a sliding block of the second electric sliding table 302; the screw of the electric rotary table 305 is fixed on the horizontal edge of the L-shaped rotary table fixing frame 301 in parallel, the test tube rotary frame 306 is rotatably connected to the rotary table surface of the electric rotary table 305, and the test tube plug opening member 303 is located above the test tube rotary frame 306 and is used for opening the plug of the test tube on the test tube rotary frame 306; the L-shaped tube clamping head adapter 307 is located below the second electric sliding table 302, one side of the L-shaped tube clamping head adapter is vertically fixed on the vertical edge of the L-shaped turntable fixing frame 301, the third electric sliding table 304 is fixed on one side of the other side of the L-shaped tube clamping head adapter facing the tube rotating frame 306 through screws, one end of the clamping jaw fixing piece 308 is connected with a sliding block of the third electric sliding table 304, the other end of the clamping jaw fixing piece is fixed with the clamping jaw 309, and an opening of the clamping jaw 309 faces the tube rotating frame 306; the L-shaped test tube clamping head adapter 307 and the third electric sliding table 304 are positioned at the upper part of the electric rotating table 305;

Further, the test tube rotating frame 306 is provided with a clamping groove 310 along the circumferential direction thereof, so that the middle part of the test tube placed thereon is exposed on the test tube rotating frame 306, when the test tube stopper is opened, the clamping jaw 309 clamps the test tube which is opened, and meanwhile, the test tube stopper opening piece 303 opens the test tube stopper, so as to facilitate opening the test tube stopper.

The test tube plug opening piece 303 comprises a rotating motor 311, a T-shaped lifting frame 312, a rotating shaft 313, a connecting disc 315 provided with a movable hole 314, a U-shaped alignment frame 316, two connecting columns 317 and two plug opening blocks 318, wherein the rotating motor 311 is fixed on the long side of the T-shaped lifting frame 312, the output shaft of the rotating motor is sleeved at the upper end of the rotating shaft 313 and fixed by screws, the lower end of the rotating shaft 313 is integrally formed with the upper end face of the connecting disc 315, and the short side of the T-shaped lifting frame 312 is connected with a sliding block on the second electric sliding table 302;

the opening of the U-shaped alignment frame 316 faces to and is fixed with the long side of the T-shaped lifting frame 312, and a test tube perforation 319 is formed on one side of the U-shaped alignment frame 316 facing away from the opening, so that the upper part of the test tube penetrates into the U-shaped alignment frame 316 from the bottom of the test tube perforation 319; the rotating shaft 313, the connecting disc 315, the connecting posts 317 and the opening blocks 318 are all positioned in the opening grooves of the U-shaped alignment frame 316, the bottom of each connecting post 317 is connected with one opening block 318, the upper end of each connecting post 317 passes through the movable hole 314, and the opening block 318 is movably connected to the edge of one side of the U-shaped alignment frame 316, which is away from the opening;

The second electric sliding table 302 in the lofting mixing unit 300, the part above the bottom of the U-shaped alignment frame 316 and the upper part of the test tube are all located above the surface of the operation table 101;

the PLC controller is electrically connected with the second electric sliding table 302, the third electric sliding table 304 and the electric rotating table 305 and is used for controlling the work of the second electric sliding table 302 and the third electric sliding table 304.

In a specific embodiment, according to fig. 9 and 10, the tube washing unit 400 includes: the U-shaped cleaning tank comprises a U-shaped cleaning tank frame 401, a cleaning tank cover 402, at least two liquid exchange bottles 403, a cleaning tank 404, a water pump 405, a pump frame 406, an electromagnetic switch 407 and a cleaning valve 408, wherein the opening direction of the U-shaped cleaning tank frame 401 faces the left side plate 102, and the cleaning tank cover 402 is hinged to the upper part of the U-shaped cleaning tank frame 401 and is exposed above the upper end surface of the operating platform 101; the liquid changing bottle 403 is vertically arranged in an opening groove of the U-shaped cleaning tank frame 401, the washing groove 404, the water pump 405, the pump frame 406, the electromagnetic switch 407 and the cleaning valve 408 are all positioned on the back vertical surface of the opening groove on the U-shaped cleaning tank frame 401, the washing groove 404 and the pump frame 406 are fixed on the U-shaped cleaning tank frame 401, the washing groove 404 is positioned on the upper part of the pump frame 406, and the water pump 405, the electromagnetic switch 407 and the cleaning valve 408 connected with the electromagnetic switch 407 are all fixed on the pump frame 406.

Further, the water pump 405 and the cleaning valve 408 are electrically connected to a PLC controller, so as to control the water pump 405 to pump clean water into the wash tank 404, or pump 405 waste from the wash tank 404 into the rinse bottle.

Further, the washing tank 404 and above in the tube washing unit 400 are exposed above the upper end surface of the console 101;

in a specific embodiment, as shown in fig. 11 to 15, the centrifugal mixing unit 500 includes: the automatic stirring device comprises a servo motor 501, a bearing frame 502, a stirring ball table 503, a photoelectric sensor 504, an eccentric stirring frame 505, a return retainer ring 506, a centrifugal fixed disc 507 and a test tube clamp 508, wherein the servo motor 501 is positioned in the bearing frame 502, an output shaft of the servo motor extends out of the top end surface of the bearing frame 502 and into the stirring ball table 503, the photoelectric sensor 504 is fixed on the upper end surface of the bearing frame 502, and the photoelectric sensor 504 is positioned on the top end surface of the bearing frame 502; the eccentric mixing frame 505 is sleeved on the mixing ball table 503 and is eccentrically arranged with the mixing ball table, and a gap is reserved between the upper end surface of the mixing ball table 503 and the upper part of the eccentric mixing frame 505; the return retainer ring 506 and the centrifugal fixing disc 507 are sequentially stacked on the eccentric mixing frame 505 from bottom to top, the eccentric mixing frame 505 is connected with the centrifugal fixing disc 507 through screws, and the test tube clamp 508 is connected with a fixing piece 510 arranged on the circumference of the centrifugal fixing disc 507 through a bolt 509;

As shown in fig. 16 and 17, the mixing table 503 includes: the spherical rotary servo motor comprises a hemispherical body 511, a lower bottom cover 512 of a mixing spherical table, a conversion pressing piece 513 and balls 514, wherein a through hole 515 is formed in the hemispherical body 511 along the axial direction of the hemispherical body, a key slot 516 connected with the servo motor 501 is formed in the through hole 515, the lower bottom cover 512 of the mixing spherical table is fixed on the bottom end surface of the hemispherical body 511, a fixed circular groove 517 concentric with the hemispherical body 511 is formed in the upper end surface of the hemispherical body 511, at least three grooves 518 are uniformly distributed on the upper end surface of the hemispherical body 511 along the circumferential direction at intervals, and the grooves 518 are communicated with the fixed circular groove 517; at least three arc grooves 519 are uniformly distributed on the circumferential surface of the hemispherical body 511 at intervals, the upper ends of the arc grooves 519 are communicated with the grooves 518, and the lower ends of the arc grooves 519 are connected with the bottom end surface of the hemispherical body 511; the balls 514 are positioned within the arcuate slots 519;

the conversion pressing piece 513 is a circular structure with at least three stoppers 520 uniformly distributed along the circumferential direction thereof, so that the structure formed by the fixed circular groove 517 and the groove 518 is adapted to the conversion pressing piece 513, and the outer edge of the stopper 520 protrudes out of the outer edge of the groove 518, so that the ball 514 is positioned below the stopper 520.

Preferably, the bottom end surface of the hemispherical body 511 extends with a concentric shaft 521 through which the servo motor 501 passes, and the through hole 515 and the key groove 516 extend into the concentric shaft 521 for connecting the servo motor 501.

Preferably, the eccentric blending frame 505 is composed of an eccentric blending disc 522 and a tripod support 523 fixed on the top end surface of the eccentric blending disc 522, the eccentric blending disc 522 is sleeved on the hemispherical body 511 and eccentrically connected with the hemispherical body 511, a gap is formed between the top end surface of the hemispherical body 511 and the tripod support 523, one surface of the tripod support 523 facing the hemispherical body 511 is in a circular arc shape, and the outer edge of the stop block 520 abuts against the inner edge of the tripod support 523, so that the balls 514 are prevented from falling out of the arc-shaped groove 519 when rolling up and down in the arc-shaped groove 519.

Preferably, the bearing frame 502 comprises a disc-shaped upper frame 524, an arc-shaped bottom frame 525, and at least three brackets 526, wherein the upper end and the lower end of the brackets 526 are respectively integrally formed with the upper frame 524 and the arc-shaped bottom frame 525, the at least three brackets 526 are uniformly distributed along the circumferential direction of the upper frame 524, and the servo motor 501 is positioned in a space formed by the at least three brackets 526; the photosensor 504 is located on the upper shelf 524.

Preferably, a plurality of fixing plates 510 are uniformly distributed along the circumference of the centrifugal fixing plate 507 at intervals, and each two adjacent fixing plates 510 are a group of fixing one test tube clip 508 through a bolt 509, so that a plurality of test tube clips 508 can be uniformly distributed on the centrifugal fixing plate 507 at intervals; the vertical distance from the inner edge of the centrifugal fixing disk 507 to the axis of the hemispherical body 511 is smaller than the vertical distance from the inner edge of the return retainer 506 to the axis of the hemispherical body 511.

Preferably, the test tube holder 508 is provided with a test tube hole 527 for accommodating a test tube, and an inclined groove 528 is arranged at the upper part facing one surface of the centrifugal fixing disc 507, and two fixing blocks 529 with holes are arranged in the inclined groove 528 along the direction of the centrifugal fixing disc 507, so that the bolt 509 sequentially passes through the fixing piece 510 and the fixing block 529 and is used for fixing the test tube holder 508 on the centrifugal fixing disc 507;

further, a U-shaped groove 530 is provided in the middle of the surface of the test tube holder 508 facing away from the centrifugal fixing plate 507, and the opening of the test tube holder faces away from the centrifugal fixing plate 507, so that the reagent in the test tube can be observed conveniently.

Preferably, the centrifugal mixing unit 500 further includes a protective cover 531, a lower end of the protective cover 531 is fixed to an upper end surface of the carrier 502, and further, a lower end of the protective cover 531 is fixed to an upper end surface of the upper frame 524; the mixing ball table 503, the photoelectric sensor 504, the eccentric mixing rack 505, the return retainer ring 506, the centrifugal fixing disc 507 and the test tube clamp 508 are all located in the protection cover 531, the protection cover 531 is funnel-shaped, and the lower end is narrow and the upper end is wide.

The PLC controller is electrically connected with the servo motor 501 and the photoelectric sensor 504 and is used for controlling the work of the servo motor 501 and the photoelectric sensor.

The specific implementation process is as follows:

when the centrifugal force is needed, a fixed shaft (not shown in the figure) is taken to be connected with the output shaft of the servo motor 501, so that the fixed shaft drives the mixing ball table 503 and the centrifugal fixed disc 507 to rotate simultaneously when rotating along with the output shaft of the servo motor 501, and at the moment, the eccentric mixing rack 505 is relatively static, so that the reagent in the test tube on the test tube clamp 508 can be centrifuged;

when mixing is needed, the fixed shaft is not required to be connected with the output shaft of the servo motor 501, at this time, the output shaft of the servo motor 501 rotates to drive the mixing ball table 503 to rotate, at this time, the balls 514 on the mixing ball table 503 roll back and forth from top to bottom in the arc-shaped groove 519, due to the effect of the eccentric mixing frame 505, the balls 514 cannot slide out, and at the same time, the eccentric mixing frame 505 is driven to do up, down and eccentric vibration on the mixing ball table 503 to mix materials or reagents in a test tube;

in a specific embodiment, as shown in fig. 18, the liquid supply unit 600 includes: the reagent bottle placing frame 601, a liquid supply reagent bottle 602, a liquid supply cover push-pull frame 603, an L-shaped push-pull rod fixing plate 604 and a fourth electric sliding table 605, wherein the reagent bottle placing frame 601 is of a cuboid structure with an opening on the top surface and one side, the top surface of the reagent bottle placing frame 601 corresponds to the round hole 109, the liquid supply reagent bottle 602 is placed in the reagent bottle placing frame 601, the liquid supply cover push-pull frame 603 is connected with one side with the opening on the side of the reagent bottle placing frame 601, and the short side of the L-shaped push-pull rod fixing plate 604 is fixedly connected with the liquid supply cover push-pull frame 603 and the long side is fixedly connected with the base of the fourth electric sliding table 605; the sliding block of the fourth electric sliding table 605 is connected with a push-pull rod 606 on the liquid supply cover push-pull frame 603 through a liquid supply adapter, so that the push-pull rod 606 drives a reagent bottle push-pull cover plate 607 connected with the push-pull rod 606 to realize opening and closing of the liquid supply reagent bottle 602;

The liquid supply cover push-pull frame 603 further comprises a liquid supply fixing plate 608, blocks 609 for carrying the push-pull rod 606, and a moving cross rod 610 for connecting the push-pull cover plate 607 of the reagent bottle, wherein the liquid supply fixing plate 608 is connected with one side of the side opening of the reagent bottle placing frame 601 and is vertically arranged with the bottom end surface of the reagent bottle placing frame 601, the blocks 609 are fixed on the top end surface of the liquid supply fixing plate 608, each block 609 corresponds to one push-pull rod 606, one reagent bottle push-pull cover plate 607 and one reagent bottle, after the push-pull rod 606 passes through the blocks 609, one end of the push-pull rod 606 is connected with a sliding block on the fourth electric sliding table 605 through a liquid supply adapter, and the other end of the push-pull rod 606 is connected with the corresponding reagent bottle push-pull cover plate 607 through the moving cross rod 610, so that the fourth electric sliding table 606, the moving cross rod 610 and the reagent bottle push-pull cover plate move in sequence to realize opening and closing of the liquid supply 602;

the short side of the L-shaped push-pull rod fixing plate 604 is fixedly connected with the liquid supply fixing plate 608.

Preferably, the space for accommodating the reagent bottles is divided into a plurality of spaces for accommodating the reagent bottles by vertical partition boards in the reagent bottle placing frame 601, and each reagent bottle corresponds to one reagent bottle push-pull cover plate 607, so that the reagent bottle push-pull cover plate 607 completes closing or opening and closing of the reagent bottle opening; further, the reagent bottles placed in the reagent bottle placing frame 601 are uncapped reagent bottles.

The PLC controller is electrically connected with the fourth electric sliding table 605, and the fourth electric sliding table 605 is controlled to work, so that the opening and closing of the outlet of the reagent bottle are realized.

The invention is realized in the following way:

after the plug of the test tube placed on the lofting mixing unit 300 is opened, controlling the pipetting unit 200 to extract the corresponding type of reagent from the liquid supply unit 600 by the preset reagent amount of the PLC, and adding the reagent into the test tube of which the plug is opened by the lofting mixing unit 300; sequentially adding required reagents into the test tubes, uniformly mixing, and then moving the test tubes filled with the reagents required to be centrifuged into the centrifugal mixing unit 500 through the pipetting and pipetting unit 200 for centrifugation or centrifugation and uniform mixing;

then, the test tube after the operation is moved to the lofting mixing unit 300 through the pipetting unit 200, the reagent is sucked through the sampling needle 214 in the pipetting unit 200 and moved to the sample detection unit 700 for detection, and the detection structure is displayed through the display screen 106, if necessary, the detection structure can be printed by a printer for archiving or reading;

when the test tube needs to be cleaned, the to-be-cleaned test tube is moved into the test tube cleaning unit 400 through the pipetting and pipetting unit 200, and meanwhile, a water inlet pipe (one end of the water inlet pipe is inserted from the upper part of the wash tank 404, the other end of the water inlet pipe is communicated with one of the liquid exchange bottles 403 after being communicated with the water pump 405) and a water outlet pipe (one end of the water outlet pipe is connected with the bottom of the wash tank 404, and the other end of the water outlet pipe is communicated with the other liquid exchange bottle 403 after being communicated with the electromagnetic valve so as to collect waste liquid and reduce pollution) are arranged on the test tube cleaning unit 400.

The structures, the working principles of the structures, etc. not described in detail in the present invention belong to the technology in the conventional technical field (for example, PLC controller, sample detection unit 700), and the functions between other units or structures are understood and implemented by the prior art, so they are not described herein in detail.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (7)

1. A fully automatic heavy metal analyzer, comprising: the device comprises a support table (100), a pipetting and pipette unit (200), a pipetting and pipette unit (300), a tube washing unit (400), a centrifugal and mixing unit (500), a liquid supply unit (600) and a sample detection unit (700), wherein the pipetting and pipette unit (200) is placed at the upper part of the support table (100), the pipetting and pipette unit (300), the tube washing unit (400), the centrifugal and mixing unit (500), the liquid supply unit (600) and the sample detection unit (700) are placed at the lower part of the support table (100), and the pipetting and pipette unit (200) is used for moving a test tube in the pipetting and pipette unit (300) to the centrifugal and mixing unit (500) or the liquid supply unit (600) or the product detection unit or the tube washing unit (400) and then centrifugally mixing a reagent in a test tube or detecting or washing a reagent in the test tube;

The supporting table (100) comprises an operation table (101) with an accommodating space, a left side plate (102), a right side plate (103), a rear side plate (104), an L-shaped upper cover plate (105), a display screen (106), a transverse supporting plate (107) and a sliding rail (108), wherein the display screen (106), the transverse supporting plate (107) and the sliding rail (108) are connected with a power supply, the accommodating space of the operation table (101) is internally used for accommodating the lofting and mixing unit (300), the test tube cleaning unit (400), the liquid supply unit (600) and the sample detection unit (700), the lofting and mixing unit (300), the test tube cleaning unit (400) and the centrifugal mixing unit (500) are respectively arranged, the upper part of the sample detection unit (700) is respectively extended out of the upper end face of the operation table (101), and a liquid taking opening of the liquid supply unit (600) is positioned below the upper end face of the operation table (101) and corresponds to a round hole (109) formed in the upper end face of the operation table (101) so as to take reagent into the liquid taking opening through the round hole (109).

The left side plate (102), the right side plate (103) and the rear side plate (104) are respectively and vertically connected with the left side, the right side and the rear side of the upper end face of the operating platform (101), the left side, the right side and the rear side of the L-shaped upper cover plate (105) are respectively connected with the upper end face of the left side plate (102), the right side plate (103) and the rear side plate (104), so that the pipetting and pipetting unit (200), the lofting and mixing unit (300), the test tube cleaning unit (400), the centrifugal and mixing unit (500), the liquid supply unit (600) and the sample detection unit (700) are all positioned in a space formed by the operating platform (101), the left side plate (102), the right side plate (103) and the rear side plate (104); the display screen (106) is arranged on the short side of the L-shaped upper cover plate (105), and the short side of the L-shaped upper cover plate (105) is parallel to the rear side plate (104);

The two ends of the transverse supporting plate (107) and the two ends of the sliding rail (108) are respectively and vertically connected with the left side plate (102) and the right side plate (103), the transverse supporting plate (107) is positioned at one side close to the rear side plate (104), the sliding rail (108) is positioned at one side away from the rear side plate (104), and the transverse supporting plate (107) is used for supporting a first linear motor (201) in the X direction of the pipetting unit (200); a second linear motor (202) in the Y direction of the pipetting unit (200) slides on the slide rail (108);

the lofting mixing unit (300) comprises an L-shaped rotary table fixing frame (301), a second electric sliding table (302), a test tube plug opening piece (303), a third electric sliding table (304), an electric rotary table (305), a test tube rotating frame (306), an L-shaped test tube clamping head adapter (307), a clamping jaw fixing piece (308) and a clamping jaw (309), wherein the second electric sliding table (302) is connected with the vertical edge of the L-shaped rotary table fixing frame (301) through an upper base of the second electric sliding table fixing frame through a vertical edge screw, and the test tube plug opening piece (303) is connected with a sliding block of the second electric sliding table (302); the screw of the electric rotating table (305) is fixed on the horizontal edge of the L-shaped rotating table fixing frame (301) in parallel, the test tube rotating frame (306) is rotationally connected to the rotating table top of the electric rotating table (305), and the test tube plug opening piece (303) is positioned above the test tube rotating frame (306) and used for opening a plug of a test tube on the test tube rotating frame (306); the L-shaped test tube clamping head adapter (307) is positioned below the second electric sliding table (302), one side of the L-shaped test tube clamping head adapter is vertically fixed on the vertical edge of the L-shaped rotary table fixing frame (301), the third electric sliding table (304) is fixed on one side of the other side of the L-shaped test tube clamping head adapter facing the test tube rotary frame (306) through screws, one end of the clamping jaw fixing piece (308) is connected with a sliding block of the third electric sliding table (304), the clamping jaw (309) is fixed on the other end of the clamping jaw fixing piece, and an opening of the clamping jaw (309) faces the test tube rotary frame (306); the L-shaped test tube clamping head adapter (307) and the third electric sliding table (304) are positioned on the upper part of the electric rotating table (305);

The test tube plug opening piece (303) comprises a rotating motor (311), a T-shaped lifting frame (312), a rotating shaft (313), a connecting disc (315) provided with a movable hole (314), a U-shaped alignment frame (316), two connecting columns (317) and two plug opening blocks (318), wherein the rotating motor (311) is fixed on the long edge of the T-shaped lifting frame (312), the output shaft of the rotating motor is sleeved at the upper end of the rotating shaft (313) and fixed by a screw, the lower end of the rotating shaft (313) is integrally formed with the upper end face of the connecting disc (315), and the short edge of the T-shaped lifting frame (312) is connected with a sliding block on the second electric sliding table (302);

the opening of the U-shaped alignment frame (316) faces the long side of the T-shaped lifting frame (312) and is fixed with the long side, and a test tube perforation (319) is formed in one side, away from the opening, of the U-shaped alignment frame (316), so that the upper part of a test tube penetrates into the U-shaped alignment frame (316) from the bottom of the test tube perforation (319); the rotating shaft (313), the connecting discs (315), the connecting columns (317) and the opening blocks (318) are all positioned in the open grooves of the U-shaped alignment frame (316), one opening block (318) is connected to the bottom of each connecting column (317), the upper end of each connecting column (317) penetrates through the movable hole (314), and the opening blocks (318) are movably connected to one side edge, deviating from an opening, of the U-shaped alignment frame (316);

The second electric sliding table (302) in the lofting mixing unit (300), the part above the bottom of the U-shaped alignment frame (316) and the upper part of the test tube are all located above the surface of the operating table (101).

2. The fully automatic heavy metal analyzer of claim 1, wherein: the pipetting and pipette unit (200) further comprises a Z-shaped connecting piece (203), a Z-shaped connecting piece (204), a third-size linear motor (205) arranged in the Z-axis direction, a transverse bearing plate (206), two plunger pumps (207), an L-shaped guide wheel frame (208), two Y-axis guide wheels (209), a sampling needle fixing plate (210), a first-size electric sliding table (211), an electric clamping jaw (212), a sampling needle fixing piece (213) and two sampling needles (214), wherein one side of two mutually parallel sides of the Z-shaped connecting piece (203) is connected with a sliding block on the first-size linear motor (201), the other side of the Z-shaped connecting piece is connected with a base on the second-size linear motor (202), the upper part of the Z-shaped connecting piece (204) is connected with the sliding block of the second-size linear motor (202), the lower part of the Z-size connecting piece is connected with the base of the third-size linear motor (205), and the second-size linear motor (202)

One side of the Z-direction connecting piece (204) which is away from the third linear motor (205); an L-shaped guide wheel frame (208) is arranged at one end, far away from the first linear motor (201), of the third linear motor (205), the long side of the L-shaped guide wheel frame (208) is fixed on the base of the third linear motor (205) and is away from the Z-direction connecting piece (204), and the short side of the L-shaped guide wheel frame (208) is fixed at the bottom of the third linear motor (205) and is parallel to the first linear motor (201), so that two Y-axis guide wheels (209) are respectively arranged on the short side of the L-shaped guide wheel frame (208) and slide along the sliding rail (108);

A vertical connecting piece (215) for fixing the vertical connecting piece (215) on two pairs of vertical edges of the Z-direction connecting piece (204) is symmetrically arranged on one side of the transverse bearing plate (206), the vertical connecting piece (215) and the third linear motor (205) are arranged in the same direction, two plunger pumps (207) are fixed on the upper part of the transverse bearing plate (206), and the plunger pumps (207) and the hoses are used for connecting the two plunger pumps; a sampling needle (214) is connected;

the sampling needle fixing plate (210) one side is fixed on the sliding block of the third linear motor (205), the first electric sliding table (211) is fixed on the other side, the electric clamping jaw (212) is fixed on the base of the first electric sliding table (211), and the two sampling needles (214) are connected with the sliding block on the first electric sliding table (211) through the sampling needle fixing piece (213), so that the first electric sliding table (211) drives the sampling needles (214) to move up and down.

3. The fully automatic heavy metal analyzer according to claim 2, wherein: the transverse bearing plate (206) is also provided with an air pressure module (216), and two interfaces of the air pressure module (216) are respectively connected with a suction port of a plunger pump (207) through a T-shaped joint.

4. The fully automatic heavy metal analyzer of claim 1, wherein: the cuvette washing unit (400) comprises: the U-shaped cleaning tank comprises a U-shaped cleaning tank frame (401), a cleaning tank cover (402), at least two liquid exchange bottles (403), a washing tank (404), a water pump (405), a pump frame (406), an electromagnetic switch (407) and a cleaning valve (408), wherein the opening direction of the U-shaped cleaning tank frame (401) faces the left side plate (102), and the cleaning tank cover (402) is hinged to the upper part of the U-shaped cleaning tank frame (401) and is exposed above the upper end surface of the operating table (101); the liquid exchange bottle (403) is vertically arranged in an opening groove of the U-shaped cleaning tank frame (401), the washing groove (404), the water pump (405), the pump frame (406), the electromagnetic switch (407) and the cleaning valve (408) are all positioned on the back vertical surface of the opening groove on the U-shaped cleaning tank frame (401), and the washing groove (404) and the pump frame (406)

The fixed U-shaped cleaning tank frame (401) that all is fixed in, wash bowl (404) are located pump frame (406) upper portion, water pump (405) electromagnetic switch (407), and with electromagnetic switch (407) are connected cleaning valve (408) and all are fixed on pump frame (406).

5. The fully automatic heavy metal analyzer of claim 1, wherein: the centrifugal mixing unit (500) includes: the automatic stirring device comprises a servo motor (501), a bearing frame (502), a stirring ball table (503), a photoelectric sensor (504), an eccentric stirring frame (505), a return retainer ring (506), a centrifugal fixing disc (507) and a test tube clamp (508), wherein the servo motor (501) is positioned in the bearing frame (502), an output shaft of the servo motor extends out of the top end surface of the bearing frame (502) and into the stirring ball table (503), and the photoelectric sensor (504) is positioned on the top end surface of the bearing frame (502); the eccentric mixing rack (505) is sleeved on the mixing ball table (503) and is eccentrically arranged with the mixing ball table, and a gap is reserved between the upper end surface of the mixing ball table (503) and the upper part of the eccentric mixing rack (505); the return check ring (506) and the centrifugal fixing disc (507) are sequentially stacked on the eccentric mixing frame (505) from bottom to top, the eccentric mixing frame (505) is connected with the centrifugal fixing disc (507) through screws, and the test tube clamp (508) is connected with a fixing sheet (510) arranged on the circumference of the centrifugal fixing disc (507) through a bolt (509);

Wherein, blending table (503) includes: the novel semi-spherical rotary table comprises a semi-spherical body (511), a lower bottom cover (512) of the mixing table, a conversion pressing piece (513) and balls (514), wherein through holes (515) are formed in the semi-spherical body (511) along the axial direction of the semi-spherical body, key grooves (516) connected with the servo motor (501) are formed in the through holes (515), the lower bottom cover (512) of the mixing table is fixed on the bottom end face of the semi-spherical body (511), fixing round grooves (517) concentric with the semi-spherical body are formed in the upper end face of the semi-spherical body (511), at least three fixing grooves (518) are uniformly distributed on the upper end face of the semi-spherical body (511) along the circumferential direction at intervals, and the fixing grooves (518) are communicated with the fixing round grooves (517); at least three arc grooves (519) are uniformly distributed on the circumferential surface of the hemispherical body (511) at intervals, the upper ends of the arc grooves (519) are communicated with the fixing grooves (518), and the lower ends of the arc grooves (519) are connected with the bottom end surface of the hemispherical body (511); the ball (514) is positioned in the arc-shaped groove

(519) An inner part;

the conversion pressing piece (513) is of a circular structure with at least three baffle blocks (520) uniformly distributed along the circumferential direction at intervals, so that the structure formed by the fixed circular groove (517) and the fixed groove (518) is matched with the conversion pressing piece (513), the outer edge of the baffle block (520) protrudes out of the outer edge of the fixed groove (518), and the ball (514) is located below the baffle block (520).

6. The fully automatic heavy metal analyzer of claim 1, wherein: the liquid supply unit (600) includes: reagent bottle rack (601), confession liquid reagent bottle (602), confession liquid lid push-and-pull frame (603), L push-and-pull rod fixed plate (604), no. four electric slipway (605), reagent bottle rack (601) is top surface and side open-ended cuboid structure, the top surface of reagent bottle rack (601) with round hole (109) corresponds, confession liquid reagent bottle (602) are arranged in reagent bottle rack (601), confession liquid lid push-and-pull frame (603) with one side open-ended of reagent bottle rack (601) is connected, the minor face of L push-and-pull rod fixed plate (604) with confession liquid lid push-and-pull frame (603) fixed connection, long limit with the base fixed connection of No. four electric slipway (605); the sliding block of the fourth electric sliding table (605) is connected with a push-pull rod (606) on the liquid supply cover push-pull frame (603) through a liquid supply adapter, so that the push-pull rod (606) drives a reagent bottle push-pull cover plate (607) connected with the push-pull rod to realize opening and closing of the liquid supply reagent bottle (602);

wherein, feed liquid lid push-and-pull frame (603) still includes feed liquid fixed plate (608), is used for bearing square (609) of push-and-pull rod (606), be used for connecting behind reagent bottle push-and-pull apron (607), feed liquid fixed plate (608) with one side of reagent bottle rack (601) side open-ended is connected, and with the bottom face perpendicular setting of reagent bottle rack (601), square (609) are fixed in on the top face of feed liquid fixed plate (608), and every square (609) corresponds one push-and-pull rod (606) and a piece reagent bottle push-and-pull apron (607) and a feed liquid reagent bottle (602), make push-and-pull rod (606) pass behind square (609), push-and-pull rod (606) one end is through feed liquid changeover piece with sliding connection on No. four electric slipway (605), the other end is through moving push-and-pull apron (607) that push-and-pull rod (609) are connected, make No. four electric slipway (605) drive in proper order behind the push-and-pull rod (606)

The cross rod (610) and the reagent bottle push-pull cover plate (607) move to realize the opening and closing of the liquid supply reagent bottle (602);

the short side of the L-shaped push-pull rod fixing plate (604) is fixedly connected with the liquid supply fixing plate (608).

7. The fully automatic heavy metal analyzer of claim 1, wherein: the sample detection unit (700) is a detector for detecting the performance of the reagent.