A fully automatic free silicon dioxide pretreatment instrument

Abstract

The application discloses a kind of full-automatic free silicon dioxide pretreatment instrument, including workbench, which is divided into sequentially arranged reaction area, cleaning area and filter area;Place disc, rotation is set on workbench;Reaction mechanism;Cleaning mechanism;Filtering waste mechanism;Motion platform;Wherein, when cup fork is in initial position, place disc rotates to the corresponding position of waiting to take beaker and cup fork, control assembly controls cup fork to move and takes beaker;The beaker tray and cup fork are provided with guiding structure, and the guiding structure can make the top notch of beaker always be in the fixed direction of easy to pour liquid;The application can fully automatically heat and stir sample, fully automatically add reagent, fully automatically clean and discharge waste, realize the batch automation detection of manual free silicon dioxide, reduce the work intensity of experimental personnel, improve detection efficiency, avoid the mistake of manual operation, improve the consistency of detection result.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of full-automatic free silicon dioxide pretreatment instrument. BACKGROUND

[0002] Common free silicon dioxide national standard detection method is manual detection method.

[0003] Experimental personnel need to make a lot of experimental actions, for example: sample heating, reagent liquid addition, reaction stirring, and sample filtration etc., operation is complicated, especially free silicon dioxide manual test heating filtration operation is complicated, and because of heating process, experimental personnel are close to heat source, there is security risk.And, repeatedly carry out manual stirring action and reagent heating steam contact human body etc.

[0004] Therefore, the present application is designed to one or more problems above a kind of full-automatic free silicon dioxide pretreatment instrument. SUMMARY

[0005] The present application provides a kind of full-automatic free silicon dioxide pretreatment instrument, can effectively solve the above problems.

[0006] The present application is realized as follows:

[0007] A kind of full-automatic free silicon dioxide pretreatment instrument

[0008] As further improvement, comprising:

[0009] Workbench, the workbench is divided into reaction zone, cleaning zone and filter area arranged in sequence;

[0010] Placing disc, rotation is set on workbench, the placing disc includes upper and lower subarea and is set as beaker tray and filter cup tray;

[0011] Reaction mechanism, set in the reaction zone of workbench, the reaction mechanism includes the sample adding piece for adding reaction solution to beaker, heating piece for heating solution and stirring assembly for stirring solution;

[0012] Cleaning mechanism, set in the cleaning zone of workbench, the cleaning mechanism includes cleaning frame for placing beaker or filter cup, and cleaning assembly for cleaning beaker or filter cup;

[0013] Filtering waste discharge mechanism, set in the filter area of workbench, the filtering waste discharge mechanism includes filter frame and waste liquid receiving waste discharge assembly;

[0014] Motion platform, set on workbench, the motion platform includes cup fork and control assembly for controlling cup fork movement along the direction of workbench x axis, y axis and z axis;

[0015] When the cup fork is in the initial position, the placing disc is rotated to a position corresponding to the to-be-taken beaker, and the control assembly controls the cup fork to move to take the beaker; a guide structure is arranged between the beaker tray and the cup fork, and the guide structure can always keep the top notch of the beaker in a fixed direction for easy pouring of liquid.

[0016] As a further improvement, the beaker tray has a plurality of first placing grooves arranged in a circumferential array, the guide structure is a limiting plate arranged corresponding to the first placing grooves, and the limiting plate has a notch groove; when the beaker is located in the first placing groove, the notch groove is in contact with the two sides of the top notch of the beaker opposite to the two groove walls.

[0017] As a further improvement, the cup fork is composed of two mirror-symmetric grabbing arms, each grabbing arm includes an elastic arc plate and a fixed end arranged at one end of the elastic arc plate, and the fixed end is connected with the control assembly; a sampling cavity for accommodating the beaker is formed between the two elastic arc plates, and the elastic arc plate close to the reaction area has a guide groove; when the beaker is located in the sampling cavity, the guide groove is in contact with the two sides of the top notch of the beaker opposite to the two groove walls.

[0018] As a further improvement, the stirring assembly includes a lifting plate, a lifting member for driving the lifting plate to move along the y-axis direction of the workbench; the stirring assembly further includes a stirring motor arranged on the lifting plate and a transmission member, the transmission member includes a driving gear and a driven gear rotatably connected to the lifting plate, a chain is sleeved between the driving gear and the driven gear, the output shaft of the stirring motor is fixedly connected with the center of the driving gear, the sampling member penetrates through the driven gear and is fixedly connected with the driven gear, and the connecting end of the sampling member and the driven gear is eccentrically arranged with the center of the driven gear.

[0019] As a further improvement, the cleaning assembly includes a spray head and a driving member for controlling the spray head to move along the y-axis direction of the workbench, the spray head is provided with a sector-shaped stopper on the side, and the angle between the inner side wall of the sector-shaped stopper and the spray head is an acute angle.

[0020] As a further improvement, the cleaning rack is fixedly connected to the bottom of the cleaning assembly, the workbench is provided with a pouring seat, the cleaning assembly is rotatably connected in the pouring seat, and the workbench is provided with a pouring assembly for controlling the cleaning assembly to rotate towards the direction close to the filter rack, so that the liquid in the beaker is poured into the filter cup.

[0021] As a further improvement, the rotating arrangement in the pouring seat is provided with an assembly seat, the cleaning assembly is mounted in the assembly seat, and opposite ends of the assembly seat are provided with pouring shafts which are rotationally connected in the assembly seat; the pouring assembly comprises a pouring motor, a first rotating roller, a second rotating roller and a rotating belt sleeved between the first rotating roller and the second rotating roller, the pouring motor is mounted on the workbench, the output shaft of the pouring motor is fixedly connected with the first rotating roller, and the second rotating roller is fixedly connected with one end of the pouring shaft which extends out of the assembly seat.

[0022] The present application has the following advantages:

[0023] The present application can automatically heat and stir samples, automatically add reagents and automatically clean and discharge waste, realizes batch automatic detection of manual free silica, reduces the working intensity of experimenters, improves the detection efficiency, avoids the mistakes of manual operation and improves the consistency of detection results. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and other related drawings can also be obtained by those skilled in the art without any creative effort on the basis of the drawings.

[0025] Figure 1 is a schematic diagram of the overall structure provided by the embodiments of the present application;

[0026] Figure 2 is a schematic diagram of the structure embodying the motion platform provided by the embodiments of the present application;

[0027] Figure 3 is a schematic diagram of the structure embodying the driving roller provided by the embodiments of the present application;

[0028] Figure 4 is a schematic diagram of the cup fork structure provided by the embodiments of the present application; Figure 2 is an enlarged schematic diagram of A in the cup fork structure;

[0029] Figure 5 is a schematic diagram of the structure embodying the stirring assembly provided by the embodiments of the present application;

[0030] Figure 6 is a schematic diagram of the structure embodying the stirring assembly provided by the embodiments of the present application;

[0031] Figure 7 is a schematic diagram of the structure embodying the waste discharge pump provided by the embodiments of the present application;

[0032] Figure 8 is a schematic diagram of the structure embodying the fan-shaped stopper provided by the embodiments of the present application;

[0033] Figure 9 is a structural schematic diagram embodying the pouring assembly provided by the embodiment of the present application;

[0034] Figure 10 is a structural schematic diagram embodying the control assembly provided by the embodiment of the present application.

[0035] The reference signs in the drawings are as follows:

[0036] 10, workbench; 11, reaction area; 12, filtration area; 13, cleaning area; 20, placing disc; 21, beaker tray; 22, filter cup tray; 23, driving roller; 25, transmission belt; 26, sample moving motor; 30, reaction mechanism; 31, heating piece; 32, sample adding piece; 321, liquid feeding pipe; 322, A reagent high-precision peristaltic pump; 323, B reagent direct current pump; 33, stirring assembly; 331, lifting plate; 3311, let-hole; 332, lifting motor; 337, lifting lead screw; 40, filtration and waste discharge mechanism; 41, filtration frame; 42, waste discharge assembly; 421, waste discharge box; 422, waste discharge pump; 50, cleaning mechanism; 51, cleaning frame; 52, cleaning assembly; 521, spray head; 522, flushing motor; 523, flushing lead screw; 524, distilled water direct current pump; 525, fan-shaped stop block; 526, cleaning plate; 60, motion platform; 61, cup fork; 611, elastic arc plate; 6111, guide groove; 6112, stepped groove; 612, fixed end; 62, control assembly; 621, x-axis connecting block; 622, y-axis connecting block; 623, z-axis connecting block; 624, x-axis motor; 625, y-axis motor; 626, z-axis motor; 627, x-axis lead screw; 628, y-axis lead screw; 629, z-axis lead screw; 70, pouring assembly; 71, pouring motor; 72, first rotating roller; 73, second rotating roller; 74, rotating belt; 80, guide structure; 81, limiting plate; 811, notched groove; 90, mounting seat; 100, assembling seat; 110, pouring seat. DETAILED DESCRIPTION

[0037] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0038] In the description of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0039] As shown in Figure 1 , Figure 2 , a full-automatic free silicon pretreatment instrument includes a workbench 10, which is divided into a reaction area 11, a filtration area 12 and a cleaning area 13 arranged in sequence. The pretreatment instrument further includes a placing disc 20, a reaction mechanism 30, a filtration and waste discharge mechanism 40, a cleaning mechanism 50 and a moving platform 60 arranged on the workbench 10.

[0040] As shown in Figure 2 , the placing disc 20 is rotationally matched with the workbench 10, and the placing disc 20 is located on the side of the reaction area 11 away from the cleaning area 13. The placing disc 20 is divided into a beaker tray 21 and a filter cup tray 22 in an up-down direction. The beaker tray 21 has a plurality of first placing grooves for placing beakers, and the plurality of first placing grooves are distributed in a circumferential array on the beaker tray 21. The filter cup tray 22 has a plurality of second placing grooves for placing filter cups, and the plurality of second placing grooves are distributed in a circumferential array on the filter cup tray 22. It should be noted that before the silicon pretreatment, the experimenter needs to manually fold and place filter paper in the filter cup in order to filter the completely reacted solution subsequently.

[0041] As shown in Figure 2As shown in the figure, the reaction mechanism 30 is located in the reaction area 11 of the workbench 10, and the reaction mechanism 30 includes a sample adding part 32 for adding a reaction solution into a beaker, a heating part 31 for heating the solution in the beaker, and a stirring assembly 33 for stirring the solution in the beaker.

[0042] As shown in the figure, Figure 2 The filter and waste discharge mechanism 40 is located in the filter area 12 of the workbench 10, and the filter and waste discharge mechanism 40 includes a filter rack 41 for placing a filter cup and a waste discharge assembly 42 for receiving waste liquid, when the filter cup is placed on the filter rack 41, the liquid inlet of the waste discharge assembly 42 is arranged opposite to the liquid outlet at the lower end of the filter cup.

[0043] As shown in the figure, Figure 2 The cleaning mechanism 50 includes a cleaning rack 51 for placing a beaker and a cleaning assembly 52 located above the cleaning rack 51, and the cleaning assembly 52 is connected to a water source, when the beaker is placed on the cleaning rack 51, the cleaning assembly 52 can deliver the water source into the beaker to flush the beaker.

[0044] As shown in the figure, Figure 2 The moving platform 60 includes a cup fork 61 for taking and placing a beaker and a control assembly 62 for controlling the movement of the cup fork 61 along the x-axis, y-axis and z-axis directions of the workbench 10.

[0045] The sampling and cleaning process of the present application for silicon dioxide is as follows:

[0046] The disc is rotated to move the beaker to be sampled to the initial position opposite to the cup fork 61, and the beaker is moved to the heating part 31 by the control assembly 62, the sample adding part 32 pumps the reaction solution into the beaker, then the stirring assembly 33 stirs the pumped solution in the beaker, at the same time, the heating part 31 heats the solution in the beaker to accelerate the reaction rate of the solution.

[0047] During the reaction of the solution, the cup fork 61 moves the filter cup on the filter cup tray 22 to the cleaning rack 51, so that the liquid outlet at the lower end of the filter cup is arranged opposite to the liquid inlet of the waste discharge assembly 42, after the reaction in the beaker is completed and the silicon dioxide solid is precipitated, the beaker is moved to the filter area 12 by the cup fork 61, and the beaker is tilted to pour the reaction solution into the filter cup on the cleaning rack 51, in this process, the solid silicon dioxide as the experimental target is intercepted on the filter paper, and the non-target solution is discharged by the liquid discharge assembly.

[0048] After the sampling is completed, the cup fork 61 moves the used beaker to the cleaning rack 51, and the cleaning assembly 52 washes the residual substances attached in the beaker, after the washing is completed, the beaker is tilted to pour the waste liquid in the beaker into the filter cup, and the waste liquid flows from the filter cup to the waste discharge assembly 42 and is discharged, so that the whole sampling and cleaning process is completed.

[0049] As shown in Figure 3 , the workbench 10 is provided with a rotating shaft, and the end of the rotating shaft away from the workbench 10 is fixedly connected with the center position of the placing disc. The rotating shaft is rotatably connected with the workbench 10 through a bearing. The placing disc rotates with the rotating shaft, so that the to-be-taken beaker on the beaker tray 21 (or the to-be-taken filter cup on the filter cup tray 22) corresponds to the initial position of the cup fork 61, facilitating the cup fork 61 to grasp the to-be-taken beaker or to-be-taken filter cup.

[0050] As shown in Figure 2 , Figure 3 , in order to improve the automation degree of sampling, the rotating shaft is rotated in a belt transmission manner. Specifically, a driving roller 23 is rotatably arranged on the workbench 10, and a transmission roller is fixedly arranged on the diameter surface of the rotating shaft. A transmission belt 25 is sleeved between the driving roller 23 and the transmission roller, and the longitudinal section of the driving roller 23 and the transmission roller both has an I-shaped structure. The transmission belt 25 is clamped in the groove of the driving roller 23 or the transmission roller. A sampling motor 26 is arranged on the workbench 10, and the output shaft of the sampling motor 26 is fixedly connected with the rotation center of the driving roller 23.

[0051] The sampling motor 26 is started, and the output shaft of the sampling motor 26 drives the driving roller 23 to rotate. Since the transmission belt 25 is sleeved between the driving roller 23 and the transmission roller, the transmission roller rotates synchronously with the driving roller 23, and then drives the placing disc to rotate, so that the to-be-taken beaker on the beaker tray 21 (or the to-be-taken filter cup on the filter cup tray 22) corresponds to the initial position of the cup fork 61, realizing the automation of sampling.

[0052] As shown in Figure 2 , the cup fork 61 includes two identical gripping arms which are mirror-symmetrically arranged. Each gripping arm has an elastic arc plate 611 and a fixed end 612 arranged at one end of the elastic arc plate 611. The fixed end 612 is fixedly connected with the control assembly 62, and the two elastic arc plates 611 form a sampling cavity for accommodating the beaker.

[0053] As shown in Figure 2 , the elastic arc plate 611 has elastic deformation capability. When the cup fork 61 is in the initial position, the cup fork 61 is in a relative position with the to-be-taken beaker. The cup fork 61 is moved along the z-axis direction of the workbench 10 (i.e. towards the to-be-taken beaker) by the control assembly 62. In this process, the outer wall of the beaker first contacts the elastic arc plate 611, and the two elastic arc plates 611 elastically deform, and move away from the one end of the fixed end 612 towards the direction of moving away from each other, so that the to-be-taken beaker can smoothly enter the sampling cavity. When the to-be-taken beaker is located in the sampling cavity, the beaker abuts between the two elastic arc plates 611, and the beaker is moved to the subsequent reaction area 11 for use by using the control assembly 62. Similarly, the taking process of the to-be-taken filter cup refers to the above-mentioned taking process of the beaker.

[0054] Since the liquid needs to be poured out from the top opening of the beaker, the opening structure needs to be limited when the beaker is moved to ensure that the liquid can be poured in a fixed direction.

[0055] Therefore, as Figure 4 As shown, a guide structure 80 is provided between the beaker tray 21 and the cup fork 61. Specifically, the guide structure 80 includes a limiting plate 81 disposed on the beaker tray 21, which is fixedly installed on the beaker tray 21 by screws. The limiting plate 81 is correspondingly disposed in the first placement slot, and the limiting plate is fixedly installed on the side of the beaker slot away from the center of the beaker tray 21. A notch 811 is provided on the top of the limiting plate 81. When the beaker is placed into the beaker slot from top to bottom, the opening of the beaker contacts the two inner walls opposite to the notch 811, restricting the beaker from rotating relative to the beaker slot.

[0056] Furthermore, such as Figure 5 As shown, a guide groove 6111 is provided on the elastic arm near the filter discharge assembly 42. The two opposite walls of the guide groove 6111 can abut against the two sides of the beaker's opening. When the beaker to be taken and the cup fork 61 are initially in relative positions, the notch groove 811 and the guide groove 6111 are at the same height in the z-axis direction of the worktable 10. As the cup fork 61 moves toward the beaker to be taken, the beaker enters the sampling cavity, and the beaker's opening also enters the first placement groove. Since the beaker's opening is in contact with the two opposite inner walls of the notch groove 811, the cup fork 61 can limit the opening of the beaker during the process of transporting the beaker, so that the beaker's opening faces a fixed position, making it convenient for the beaker to pour liquid toward that fixed position.

[0057] like Figure 5 As shown, since the cross-sectional area of ​​the upper rim of the beaker is larger than that of the body, a stepped groove 6112 is provided on the elastic arc plate 611 to engage the rim of the beaker in order to improve the stability of the cup fork 61 when removing the beaker. When the beaker enters the sampling cavity, the bottom of the beaker rim contacts the bottom surface of the stepped groove 6112, while the side wall of the beaker rim contacts the inner surface of the stepped groove 6112, thus improving the stability of the cup fork 61 when moving the beaker.

[0058] like Figure 6 As shown, the heating element 31 is fixedly connected to the reaction zone 11 of the workbench 10. The heating element 31 has a heating chamber for placing a beaker, and the wall of the heating chamber is provided with an electric heating element (not shown in the figure), which can heat the solution in the beaker.

[0059] like Figure 6 , Figure 7As shown, the adding member 32 comprises a liquid delivery pipe 321, an A reagent high-precision peristaltic pump 322 arranged on the workbench 10, and a B reagent direct current pump 323. The liquid delivery pipe 321 has an A reagent interface and a B reagent interface. The A reagent high-precision peristaltic pump 322 and the B reagent direct current pump 323 are both provided with communication pipes (not shown in the figure) between the A reagent interface and the B reagent interface. The A reagent and the B reagent are pumped into the liquid delivery pipe 321, mixed, and then flow into the beaker for subsequent reaction.

[0060] As shown in the figure, Figure 6 The workbench 10 is provided with a mounting seat 90 near the heating member 31, and the stirring assembly 33 is arranged on the mounting seat 90. Specifically, the stirring assembly 33 comprises a lifting plate 331, a lifting motor 332, a stirring motor arranged on the lifting plate 331, and a transmission member. The liquid delivery pipe 321 is arranged on the lifting plate 331, and the lifting plate 331 is located directly above the heating member 31. The lifting motor 332 is installed in the mounting seat 90. It should be noted that the liquid delivery pipe 321 is of a rigid structure.

[0061] As shown in the figure, Figure 6 The transmission member comprises a driving gear, a driven gear, and a chain (not shown in the figure) sleeved between the driving gear and the driven gear. The stirring motor is fixedly installed on the lifting plate 331. The driving gear is fixedly installed on the output shaft of the lifting motor 332. The output shaft of the stirring motor is rotatably connected to the lifting plate 331 through a bearing at one end of the driving gear.

[0062] As shown in the figure, Figure 6 The driven gear is rotatably connected to the lifting plate 331. The liquid delivery pipe 321 passes through the driven gear and is fixedly connected to the driven gear. The liquid delivery pipe 321 is arranged to deviate from the center of the driven gear. When the driven gear drives the liquid delivery pipe 321 to rotate, the liquid delivery pipe 321 can perform circular motion around the center of the driven gear to stir the reaction solution in the beaker. The lifting plate 331 is provided with a clearance hole 3311 to provide a clearance space for the stirring of the liquid delivery pipe 321.

[0063] As shown in the figure, Figure 6 , Figure 7 The mounting seat 90 is rotatably connected with a lifting screw 337. The output shaft of the lifting motor 332 is fixedly connected to the lifting screw 337. The lifting plate 331 is threadedly connected to the lifting screw 337. The mounting seat 90 is provided with a bearing structure that slidably cooperates with the lifting plate 331 to limit the lifting plate 331.

[0064] When the beaker is placed in the heating cavity, the lifting motor 332 is started, the lifting plate 331 drives the liquid delivery pipe 321 to move downward and extend into the beaker, the A reagent high-precision peristaltic pump 322 and the B reagent direct current pump 323 pump the A reagent and the B reagent into the liquid delivery pipe 321, the mixed reagent enters the beaker through the liquid delivery pipe 321, then the stirring motor is started, the stirring motor drives the driving gear to rotate, the driven gear rotates synchronously under the action of the chain, and the liquid in the liquid delivery pipe 321 rotates, so that the mixed reagent in the beaker can be stirred, and at the same time, the electric heating sheet in the heating piece 31 heats the mixed reagent in the beaker, so that the stirring and heating are performed simultaneously, and the progress of the reaction is accelerated.

[0065] As shown in Figure 6 , Figure 7 , the filter frame 41 is fixedly installed on the filter area 12 of the workbench 10, and has filter cup holes for placing filter cups. The waste discharge assembly 42 includes a waste discharge box 421, a waste discharge pump 422, and a waste discharge pipe (not shown in the figure) for connecting the waste discharge box 421 to the waste discharge pump 422. The liquid inlet is arranged at the end of the waste discharge box 421. When the filter cup is placed in the waste discharge hole, the lower end liquid outlet of the filter cup is connected to the waste discharge hole. The waste discharge pump 422 can discharge the waste liquid from the waste discharge box 421 through the waste discharge pipe, thereby completing the collection of the waste liquid.

[0066] As shown in Figure 6 , Figure 7 , Figure 8 , the cleaning frame 51 has cleaning holes for placing beakers or filter cups, and the cleaning assembly 52 includes a spray head 521, a flushing motor 522, a flushing lead screw 523, a distilled water direct current pump 524, and a water pipe (not shown in the figure) for connecting the spray head 521 to the distilled water direct current pump 524. The cleaning area 13 of the workbench 10 has an assembly seat 100, and the cleaning plate 526 is slidably connected in the assembly seat 100. The spray head 521 is fixedly installed on the cleaning plate 526. The flushing motor 522 is installed in the assembly seat 100, the cleaning frame 51 is fixedly installed at the bottom of the assembly seat 100, the flushing lead screw 523 is rotationally connected in the assembly seat 100, and the output shaft of the flushing motor 522 is fixedly connected to the flushing lead screw 523. It should be noted that a linear bearing structure is arranged in the assembly seat 100, and the cleaning plate 526 is slidably matched with the linear bearing structure, so as to limit the rotation of the cleaning plate 526 during movement.

[0067] The flushing motor 522 is started, the output shaft of the flushing motor 522 drives the flushing lead screw 523 to rotate, and drives the lifting plate 331 to move along the y-axis direction of the workbench 10, so as to clean the beaker from top to bottom or from bottom to top.

[0068] As shown in Figure 5As shown, the fan-shaped stopper 525 is threadedly connected to the periphery of the spray head 521, the fan-shaped stopper 525 has an upper opening and a lower opening, the cross-sectional area of the lower opening is larger than that of the upper opening, and the included angle between the central axis of the spray head 521 and the inner wall of the stopper is an acute angle. When the water flow reaches the beaker from the spray head 521, the fan-shaped stopper 525 can block the splashed water flow, so that this part of the water flow returns to the beaker again to clean the inner wall of the beaker.

[0069] As shown in Figure 7 , Figure 9 , the workbench 10 is provided with a pouring seat 110, and the assembly seat 100 is protruded along the z-axis direction of the workbench 10 to form a pouring shaft, the assembly seat 100 is located between the pouring seats 110, and the pouring seat 110 is provided with a bearing for rotating connection of the pouring shaft.

[0070] As shown in Figure 7 , Figure 9 , the pouring seat 110 is provided with a pouring assembly 70 for controlling the rotation of the assembly seat 100. Specifically, the pouring assembly 70 includes a pouring motor 71, a first rotating roller 72, a second rotating roller 73, and a rotating belt 74 sleeved between the first rotating roller 72 and the second rotating roller 73, the pouring motor 71 is fixedly installed in the pouring seat 110, the output shaft of the pouring motor 71 is fixedly connected with the rotation center of the first rotating roller 72, the pouring shaft away from the cleaning rack 51 protrudes out of the assembly seat 100, and the second rotating roller 73 is fixedly installed at one end of the pouring shaft protruding out of the assembly seat 100.

[0071] When the beaker is cleaned, the pouring motor 71 is started, the output shaft of the pouring motor 71 drives the first rotating shaft to rotate, the second rotating roller 73 is driven to rotate through the rotating belt 74, and then the assembly seat 100 is driven to rotate by the pouring shaft, so that the cleaned beaker is poured towards the filter area 12 by the cleaning rack 51, so that the waste liquid in the beaker is poured into the filter cup, and the waste liquid is discharged by the waste discharge assembly 42.

[0072] It should be noted that, before the beaker reaction is completely filtered, the control assembly 62 moves the beaker to the cleaning rack 51 by controlling the cup fork 61, and controls the beaker to pour the reaction solution into the filter cup by the pouring assembly 70, so as to realize the automation of the filtering step in the experimental process.

[0073] As shown in Figure 9 , Figure 10 , the control assembly 62 includes an x-axis connecting block 621, a y-axis connecting block 622, a z-axis connecting block 623, an x-axis motor 624, a y-axis motor 625, a z-axis motor 626, an x-axis screw 627, a y-axis screw 628, and a z-axis screw 629, and the fixed end 612 of the elastic arc arm is fixedly connected with the y-axis connecting block 622.

[0074] A y-axis screw 628 is rotatably connected to the z-axis connecting block 623, and the y-axis connecting block 622 is threadedly connected to the y-axis screw. A y-axis motor 625 is fixedly installed on the z-axis connecting block 623, and a linear bearing structure for sliding connection of the y-axis connecting block 622 is arranged on the z-axis connecting block 623.

[0075] A z-axis screw 629 is rotatably connected to the x-axis connecting block 621, and the z-axis connecting block 623 is threadedly connected to the z-axis screw 629. A z-axis motor 626 is fixedly installed on the x-axis connecting block 621, and a linear bearing structure for sliding connection of the z-axis connecting block 623 is arranged on the x-axis connecting block 621.

[0076] An x-axis screw 627 is rotatably connected to the top of the workbench 10, and the x-axis connecting block 621 is threadedly connected to the x-axis screw 627. An x-axis motor 624 is fixedly installed on the top of the workbench 10, and a linear bearing structure for sliding connection of the x-axis connecting block 621 is arranged on the top of the workbench 10.

[0077] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fully automated free silica pretreatment device, characterized in that: The utility model relates to a reaction and filtration device for biochemical experiment, which comprises a workbench (10) divided into a reaction area (11), a washing area (13) and a filtration area (12) arranged in sequence; a placing disc (20) rotatably arranged on the workbench (10), wherein the placing disc (20) comprises a beaker tray (21) and a filter cup tray (22) arranged in an upper and lower manner; a reaction mechanism (30) arranged in the reaction area (11) of the workbench (10), wherein the reaction mechanism (30) comprises a sample adding member (32) for adding a reaction solution into a beaker, a heating member (31) for heating the solution and a stirring assembly (33) for stirring the solution, the heating member (31) has a heating cavity for placing the beaker, the sample adding member (32) comprises a liquid feeding pipe (321), the workbench (10) is provided with a mounting seat (90) on a side close to the heating member (31), the stirring assembly (33) is arranged on the mounting seat (90), the stirring assembly (33) comprises a lifting plate (331), the liquid feeding pipe (321) is arranged on the lifting plate (331), the lifting plate (331) is located directly above the heating member (31), and the liquid feeding pipe (321) can stir mixed reagents in the beaker; a washing mechanism (50) arranged in the washing area (13) of the workbench (10), wherein the washing mechanism (50) comprises a washing rack (51) for placing the beaker or the filter cup and a washing assembly (52) for washing the beaker or the filter cup; the washing rack (51) is fixedly connected to the bottom of the washing assembly (52), the workbench (10) is provided with a pouring seat (110), the washing assembly (52) is rotatably connected to the pouring seat (110), and the workbench (10) is provided with a pouring assembly (70) for controlling the washing assembly (52) to rotate towards a direction close to the filter rack (41) so as to pour liquid in the beaker into the filter cup; a filtration and waste discharge mechanism (40) arranged in the filtration area (12) of the workbench (10), wherein the filtration and waste discharge mechanism (40) comprises a filter rack (41) and a waste liquid receiving assembly (42), the filter rack (41) is fixedly arranged on the filtration area (12) of the workbench (10), and the filter rack (41) has a filter cup hole for placing the filter cup; and a moving platform (60) arranged on the workbench (10), wherein the moving platform (60) comprises a cup fork (61) and a control assembly (62) for controlling the cup fork (61) to move along the x-axis, the y-axis and the z-axis of the workbench (10). ​ ​ ​ ​ ​ ​ When the cup fork (61) is in the initial position, the placing disc (20) is rotated to the position corresponding to the to-be-taken beaker and the cup fork (61); the control assembly (62) controls the cup fork (61) to move to take the beaker, and moves the beaker to the heating part (31); the sample adding part (32) pumps the reaction solution into the beaker; then the stirring assembly (33) stirs the solution pumped into the beaker; the heating part (31) heats the solution in the beaker, so as to accelerate the reaction rate of the solution; in the process of solution reaction, the cup fork (61) moves the filter cup on the filter cup tray (22) to the cleaning rack (51); before the beaker is completely reacted and filtered, the control assembly (62) moves the beaker to the cleaning rack (51) by controlling the cup fork (61), and controls the beaker to pour the reaction solution into the filter cup by the pouring assembly (70); the guiding structure (80) is arranged between the beaker tray (21) and the cup fork (61), and the guiding structure (80) can always make the top notch of the beaker be in a fixed direction which is easy to pour liquid.

2. The fully automatic free silicon dioxide pretreatment instrument according to claim 1, characterized in that: The beaker tray (21) has a plurality of first placing grooves which are distributed in a circumferential array, the guiding structure (80) is a limiting plate (81) which is arranged correspondingly to the first placing grooves, and the limiting plate (81) has a notch groove (811); when the beaker is located in the first placing groove, the notch groove (811) is in contact with two sides of the top notch of the beaker which are opposite to each other.

3. The fully automatic free silicon dioxide pretreatment instrument according to claim 2, characterized in that: The cup fork (61) is composed of two mirror-symmetrical grabbing arms, each grabbing arm comprises an elastic arc plate (611) and a fixed end (612) arranged at one end of the elastic arc plate (611), and the fixed end (612) is connected with the control assembly (62); the two elastic arc plates (611) form a sampling cavity for accommodating the beaker, and the elastic arc plate (611) near the reaction area (11) side has a guide groove (6111); when the beaker is located in the sampling cavity, the guide groove (6111) is in contact with two sides of the top notch of the beaker which are opposite to each other.

4. The fully automatic free silicon dioxide pretreatment instrument according to claim 3, characterized in that: The two elastic arc plates (611) are provided with a stepped groove (6112) on the side close to each other; when the beaker is located in the sampling cavity, the bottom of the beaker is in contact with the bottom of the stepped groove (6112), and the side wall of the beaker is in contact with the inner side wall of the stepped groove (6112).

5. The fully automatic free silicon dioxide pretreatment instrument according to claim 1, characterized in that: The stirring assembly (33) comprises a lifting plate (331) and a lifting part for driving the lifting plate (331) to move along the y-axis direction of the workbench (10); the stirring assembly (33) further comprises a stirring motor arranged on the lifting plate (331) and a transmission part, the transmission part comprises a driving gear and a driven gear which are rotationally connected to the lifting plate (331), a chain is sleeved between the driving gear and the driven gear, the output shaft of the stirring motor is fixedly connected with the center of the driving gear, the sample adding part (32) penetrates through the driven gear and is fixedly connected with the driven gear, and the connecting end of the sample adding part (32) and the center of the driven gear are eccentrically arranged.

6. The fully automatic free silicon dioxide pretreatment instrument according to claim 1, characterized in that: The cleaning assembly (52) comprises a spray head (521), a driving member for controlling the movement of the spray head (521) along the y-axis direction of the workbench (10), and a plurality of sector-shaped stoppers (525) arranged on the periphery of the spray head (521), wherein the angle between the inner side wall of the sector-shaped stopper (525) and the spray head (521) is an acute angle.

7. The fully automatic free silicon dioxide pretreatment instrument according to claim 6, characterized in that: The pouring assembly (70) comprises a pouring motor (71), a first rotating roller (72), a second rotating roller (73), and a rotating belt (74) sleeved between the first rotating roller (72) and the second rotating roller (73), wherein the pouring motor (71) is installed on the workbench (10), the output shaft of the pouring motor (71) is fixedly connected with the first rotating roller (72), and the second rotating roller (73) is fixedly connected with one end of the pouring shaft which extends out of the assembly seat (100).

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