Automatic liquid dispensing system

Abstract

An automatic liquid preparation system comprises a mounting bracket, a pipettor, a pipetting head device, a liquid taking turntable and a liquid injection turntable. The top of the mounting bracket is provided with a vertical sliding groove, and the pipettor is arranged in the vertical sliding groove. The pipettor is provided below the pipetting head device. The pipetting head device comprises a supporting box, a pipetting head, a horizontal sliding groove and a storage box. The pipetting head is arranged on the supporting box, the horizontal sliding groove is arranged on the mounting bracket, and the supporting box is slidably connected with the horizontal sliding groove. The storage box is arranged at one end of the horizontal sliding groove, and the other end of the horizontal sliding groove is located below the pipettor. The bottom of the mounting bracket is a bracket base, and the liquid injection turntable is arranged on the bracket base. The liquid taking turntable is arranged above the liquid injection turntable and coaxial with the liquid injection turntable. The liquid injection turntable is provided with a plurality of liquid injection pipes. The liquid taking turntable is provided with a liquid taking pipe. The automatic liquid preparation system in the technical solution is more accurate and efficient than the manual liquid preparation method, and is less likely to threaten the safety of personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid configuration, in particular to an automatic liquid preparation system. BACKGROUND

[0002] Liquid solution preparation can be said to be the most basic technique for laboratory analysts, and is also a necessary option in daily work. Liquid solution preparation includes basic operations such as solute calculation, pipetting, and constant volume, as well as some pre- and post-addition sequences of mixed solutions and the use of some reagents' own chemical properties. Mastering the skills of solution preparation can greatly shorten the preparation time and improve experimental efficiency. A pipette is a small tool commonly used in laboratory liquid preparation. Currently, in the sampling, liquid preparation and mixing operations of the laboratory, the pipette is basically operated manually.

[0003] The manual liquid preparation method has low liquid preparation efficiency when preparing liquid for multiple samples and multiple experimental conditions, and is prone to sample addition errors. In addition, the manual liquid preparation method also poses a threat to personnel safety when sucking some toxic and volatile liquid reagents. SUMMARY

[0004] Therefore, the present application aims to provide an automatic liquid preparation system to alleviate the technical problems of low liquid preparation efficiency when preparing liquid for multiple samples and multiple experimental conditions, and the sample addition errors, as well as the threat to personnel safety when sucking some toxic and volatile liquid reagents.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions:

[0006] An automatic liquid preparation system comprises a mounting bracket, a pipette, a pipette head device, a liquid taking turntable and a liquid injection turntable.

[0007] The top of the mounting bracket is provided with a vertical sliding groove, the pipette is slidingly arranged in the vertical sliding groove, and a first power device is arranged between the vertical sliding groove and the pipette.

[0008] The pipette head device is arranged below the pipette. The pipette head device comprises a supporting box, a pipette head, a horizontal sliding groove and a storage box. A plurality of pipette heads are arranged on the supporting box. The horizontal sliding groove is arranged on the mounting bracket. The supporting box is slidingly connected with the horizontal sliding groove, and a second power device is arranged between the horizontal sliding groove and the supporting box. The storage box is arranged at one end of the horizontal sliding groove, and the other end of the horizontal sliding groove is located below the pipette. The storage box is provided with an inlet, and the supporting box can enter the storage box from the inlet along the horizontal sliding groove.

[0009] The bottom of the mounting bracket is a bracket base, the liquid injection turntable is arranged on the bracket base, the liquid taking turntable is arranged above the liquid injection turntable and coaxial with the liquid injection turntable, the liquid injection turntable is connected with a first rotating motor, the liquid taking turntable is connected with a second rotating motor, the liquid injection turntable and the liquid taking turntable are both large tangent circle structures, a plurality of liquid injection pipes are arranged on the liquid injection turntable and evenly distributed on the same arc, a plurality of liquid taking pipes are arranged on the liquid taking turntable and evenly distributed on the same arc, and one liquid taking pipe is above one liquid injection pipe.

[0010] The pipettes are distributed on the same arc, the arc where the pipettes are located is above the arc where the liquid taking pipes are located, and the arc where the pipettes are located is coaxial and equal in diameter with the arc where the liquid taking pipes are located and the arc where the liquid injection pipes are located.

[0011] Further, the first power device includes a first motor and a first screw rod, the first motor is arranged at the top end of the vertical sliding groove, and the output end of the first motor is connected with the first screw rod, the first screw rod is vertically arranged at the back side of the vertical sliding groove, and a first nut is arranged on the first screw rod, the pipette is provided with a first sliding block, and the first sliding block is slidingly arranged in the vertical sliding groove and connected with the first nut.

[0012] The second power device includes a second motor and a second screw rod, the second motor is arranged at one end of the horizontal sliding groove, and the output end of the second motor is connected with the second screw rod, the second screw rod is horizontally arranged at the bottom of the horizontal sliding groove, and the second screw rod is provided with a second nut, and the supporting box is provided with a second sliding block, and the second sliding block is slidingly arranged in the horizontal sliding groove and connected with the second nut.

[0013] Further, the pipette is provided with a pipette head dismounting assembly, the pipette head dismounting assembly includes a connecting plate, a knocking rod and a discharging plate, the connecting plate is horizontally arranged at the top end of the vertical sliding groove, the top end of the knocking rod is connected with the connecting plate, and the knocking rod is vertically downward, the outer part of the pipette is provided with a cover, a discharging plate sliding groove is arranged on the cover and vertically downward, the knocking rod is arranged in the inner part of the cover, and the top end of the knocking rod is provided with a third sliding block, the knocking rod is slidingly connected with the discharging plate sliding groove through the third sliding block, a knocking block is further arranged on the knocking rod, the knocking block is connected with the third sliding block, the knocking block is arranged outside the cover, and the knocking block is located directly below the knocking rod.

[0014] Further, a pipette head collecting box is further included, the pipette head collecting box is arranged at the bottom of the mounting bracket, and the pipette head collecting box is below the pipette.

[0015] Further, the pipette comprises a third motor, a third screw rod, a piston rod, a sleeve and a sleeve shell; the top end of the third screw rod is connected with the output end of the third motor; the top end of the piston rod is connected with the bottom end of the third screw rod, the sleeve is sleeved on the outside of the piston rod, and the piston rod and the sleeve are in sliding connection; the sleeve shell is sleeved on the outside of the sleeve.

[0016] Further, the pipette further comprises an air pump, the air pump is connected with an exhaust pipe, the exhaust pipe is connected with an air valve; the side wall of the sleeve is provided with an interface, and the air pump is connected with the interface through the air valve.

[0017] Further, the automatic liquid preparation system according to claim 1, wherein the pipette is provided in three groups, namely a first pipette, a second pipette and a third pipette; the liquid taking range of the first pipette is 100-1000 μl, the liquid taking range of the second pipette is 10-100 μl, and the liquid taking range of the third pipette is 0.5-10 μl.

[0018] Further, the supporting box comprises a supporting bottom plate, a top cover, a supporting bracket, a torsion sheet roll and a damping strip.

[0019] The supporting bracket is arranged above the supporting bottom plate, and seven groups of first grooves are arranged on the supporting bracket; the torsion sheet roll has seven groups, and the seven groups of the torsion sheet roll are coaxial; one group of the torsion sheet roll is arranged at one end of one group of the first grooves; the top cover is arranged outside the supporting bracket and the torsion sheet roll, and seven groups of second grooves are arranged on the top cover, one group of the second grooves is arranged above one group of the first grooves; the free end of one group of the torsion sheet roll is arranged between one group of the first grooves and one group of the second grooves, and the free end of the torsion sheet roll is provided with four mounting holes, one pipette head is arranged in one mounting hole, the top end of the pipette head is arranged above the second groove, and the bottom end of the pipette head is arranged below the second groove; the damping strip is arranged on the torsion sheet roll and between the torsion sheet roll and the top cover.

[0020] Further, one end of the second groove close to the torsion sheet roll is provided with a positioning baffle.

[0021] Further, the pipette head device further comprises an ultraviolet lamp, one ultraviolet lamp is arranged in the storage box, and one ultraviolet lamp is arranged on the supporting bottom plate.

[0022] Compared with the prior art, the automatic liquid preparation system has the following technical effects:

[0023] (1) Compared with the prior art, in the technical solution, the pipette can be driven by the first power device to move along the vertical chute, when moving to the bottom end of the vertical chute, the bottom end of the pipette is inserted into the pipette head below and automatically installed, after the installation of the pipette head is completed, the remaining pipette heads are carried by the supporting box and moved along the horizontal chute to the storage box under the drive of the second power device, at this time, the liquid taking turntable is rotated to the lower side of the pipette under the drive of the second rotary motor, and the multiple groups of pipettes take liquid from the liquid taking pipes on the liquid taking turntable, after the liquid taking step is completed, the liquid taking turntable is rotated to the original position, and the liquid injection turntable is rotated to the lower side of the pipette under the drive of the first rotary motor, and then the liquid injection pipes on the liquid injection turntable are respectively injected with liquid; the multiple groups of pipettes can take liquid from multiple different liquid taking pipes according to the liquid preparation requirements, or the multiple groups of pipettes can take liquid multiple times one by one, and the multiple groups of pipettes can inject liquid into multiple different liquid injection pipes at the same time, or the multiple groups of pipettes can inject liquid into the same liquid injection pipe one by one, so that multiple groups of the same solution can be prepared at the same time, multiple different solutions can be prepared at the same time, the diversification requirements of automatic liquid preparation are realized, and the automatic liquid preparation system is more accurate and efficient than the manual liquid preparation method, and is not easy to threaten the safety of personnel due to the chemical properties of some special liquids.

[0024] (2) The setting of the pipette head dismounting assembly can drive the pipette to move upward along the vertical chute to the top end of the vertical chute through the first power device after the pipette completes a liquid preparation operation, at this time, the striking rod at the top end of the vertical chute impacts the striking block at the top end of the dismounting plate, so that the dismounting plate moves downward along the dismounting plate chute, and in the process of moving, the bottom end of the dismounting plate knocks off the pipette head from the pipette, so that the automatic dismounting of the pipette head is completed.

[0025] (3) The setting of the pipette head collecting box facilitates the collection and treatment of the multiple dismounted pipette heads.

[0026] (4) The structure of the pipette is an electric piston type structure, which can drive the third screw to rotate through the third motor, and drive the piston rod connected to the bottom of the third screw to move up and down in the sleeve, so as to complete the liquid taking and liquid injection operations.

[0027] (5) The setting of the air pump can blow out the residual liquid in the pipette during liquid injection, reducing the error of solution preparation.

[0028] (6) Multiple groups of pipettes are provided in multiple different specifications, which can select different pipettes according to different liquid taking amounts.

[0029] (7) In the structure of the supporting box, the pipettes in the first row can be used one by one during the movement of the supporting box along the horizontal sliding groove, after the pipettes in the first row are used up, the pipettes in the second row move to the position of the pipettes in the first row during the winding of the torsion sheet roll, so that the pipettes in the second row can be used, and the damping strip can slow down the moving speed of the free end of the torsion sheet roll to drive the pipettes, so that the movement is more stable.

[0030] (8) The positioning baffle can position the pipettes, so that the pipettes are more stable.

[0031] (9) The ultraviolet lamp can sterilize and disinfect the pipettes. BRIEF DESCRIPTION OF DRAWINGS

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In order to more clearly illustrate the specific embodiments of the present application, the drawings needed in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0036] Figure 1 The overall structure schematic diagram of the automatic liquid preparation system provided for the embodiment of the present application is shown in the figure;

[0037] Figure 2 The structure schematic diagram of the pipette head device provided for the embodiment of the present application is shown in the figure;

[0038] Figure 3 The exploded view of the pipette head device provided for the embodiment of the present application is shown in the figure;

[0039] Figure 4 The structure schematic diagram of the pipette provided for the embodiment of the present application is shown in the figure;

[0040] Figure 5 The partial cutaway view of the pipette provided for the embodiment of the present application is shown in the figure.

[0041] Explanation of reference signs:

[0042] 1 - mounting bracket; 11 - vertical sliding slot; 2 - pipette; 21 - cover; 22 - third motor; 23 - third screw; 24 - piston rod; 25 - sleeve; 26 - sleeve shell; 27 - pipette head dismounting assembly; 271 - connecting plate; 272 - hitting rod; 273 - unloading plate; 274 - hitting block; 3 - pipette head device; 31 - supporting box; 311 - supporting bottom plate; 312 - top cover; 312-1 - positioning baffle; 313 - supporting bracket; 314 - torsion sheet roll; 315 - damping strip; 32 - pipette head; 33 - horizontal sliding slot; 34 - storage box; 35 - ultraviolet lamp; 4 - liquid taking turntable; 41 - liquid taking pipe; 5 - liquid injecting turntable; 51 - liquid injecting pipe; 6 - pipette head collection box. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, 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, not all. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0044] 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 only 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 making creative efforts belong to the scope of protection of the present application.

[0045] Some embodiments of the present application will be described in detail with reference to the drawings. The following embodiments and features of the embodiments described below can be combined with each other in the case of no conflict.

[0046] The present embodiment provides an automatic liquid preparation system, referring to Figures 1 to 5 , comprising a mounting bracket 1, a pipettor 2, a pipetting head device 3, a liquid taking turntable 4 and a liquid injection turntable 5; the top of the mounting bracket 1 is provided with three groups of vertical sliding grooves 11, the pipettor 2 has three groups, one group of pipettor 2 is slidingly arranged in one group of vertical sliding grooves 11, and a first power device is arranged between the vertical sliding groove 11 and the pipettor 2; the pipetting head device 3 has three groups, and one group of pipetting head device 3 is arranged below one group of pipettor 2; the pipetting head device 3 comprises a supporting box 31, a pipetting head 32, a horizontal sliding groove 33 and a storage box 34; a plurality of pipetting heads 32 are arranged on the supporting box 31, the horizontal sliding groove 33 is arranged on the mounting bracket 1, the supporting box 31 and the horizontal sliding groove 33 are slidingly connected, and a second power device is arranged between the horizontal sliding groove 33 and the supporting box 31; the storage box 34 is arranged at one end of the horizontal sliding groove 33, and the other end of the horizontal sliding groove 33 is located below the pipettor 2; the storage box 34 is provided with an entrance, and the supporting box 31 can enter the storage box 34 from the entrance along the horizontal sliding groove 33; the bottom of the mounting bracket 1 is a bracket base, and the liquid injection turntable 5 is arranged on the bracket base; the liquid taking turntable is arranged above the liquid injection turntable 5 and coaxial with the liquid injection turntable 5; the liquid injection turntable 5 is connected with a first rotary motor, and the liquid taking turntable 4 is connected with a second rotary motor; the liquid injection turntable 5 and the liquid taking turntable 4 are both large sector structures; the liquid injection turntable 5 is provided with a plurality of liquid injection pipes 51, and the plurality of liquid injection pipes 51 are uniformly distributed on the same arc; the liquid taking turntable 4 is provided with a plurality of liquid taking pipes 41, and the plurality of liquid taking pipes 41 are uniformly distributed on the same arc, and one liquid taking pipe 41 is located above one liquid injection pipe 51; the three groups of pipettors 2 are distributed on the same arc; the arc where the three groups of pipettors 2 are located is above the arc where the liquid taking pipes 41 are located, and coaxial and equal in diameter with the arc where the liquid taking pipes 41 are located and the arc where the liquid injection pipes 51 are located.

[0047] Compared with the prior art, in the technical solution, the pipette 2 can be driven by the first power device to move along the vertical sliding groove 11, when moving to the bottom end of the vertical sliding groove 11, the bottom end of the pipette 2 is inserted into the pipette head 32 below and is automatically installed, after the installation of the pipette head 32 is completed, the remaining pipette heads 32 are carried by the supporting box 31 and are driven by the second power device to move along the horizontal sliding groove 33 to the storage box 34, at this time, the liquid taking turntable 4 is driven by the second rotating motor to rotate to the lower side of the pipette 2, the three groups of pipettes 2 take liquid from the liquid taking pipes 41 on the liquid taking turntable 4, after the liquid taking step is completed, the liquid taking turntable 4 is rotated to the original position, the liquid injection turntable 5 is driven by the first rotating motor to rotate to the lower side of the pipette 2, and then the liquid injection pipes 51 on the liquid injection turntable 5 are respectively configured; the three groups of pipettes 2 can take liquid from three different liquid taking pipes 41 at the same time according to the liquid preparation requirement, or the three groups of pipettes 2 can take liquid multiple times one by one, when injecting liquid, the three groups of pipettes 2 can inject liquid into three different liquid injection pipes 51 at the same time, or the three groups of pipettes 2 can inject liquid into the same liquid injection pipe 51 one by one, so that three kinds of same solutions can be configured at the same time, three kinds of different solutions can be configured at the same time, the diversification requirement of automatic liquid preparation is realized, and the automatic liquid preparation system is more accurate, more efficient and less likely to threaten the safety of personnel due to the chemical properties of some special liquids compared with the manual liquid preparation mode.

[0048] Further, the first power device comprises a first motor and a first lead screw; the first motor is arranged at the top end of the vertical sliding groove 11, and the output end of the first motor is connected with the first lead screw; the first lead screw is vertically arranged at the rear side of the vertical sliding groove 11, and the first lead screw is provided with a first nut; the pipette 2 is provided with a first sliding block, the first sliding block is slidingly arranged in the vertical sliding groove 11 and is connected with the first nut; the second power device comprises a second motor and a second lead screw; the second motor is arranged at one end of the horizontal sliding groove 33, and the output end of the second motor is connected with the second lead screw; the second lead screw is horizontally arranged at the bottom of the horizontal sliding groove 33, and the second lead screw is provided with a second nut; the supporting box 31 is provided with a second sliding block, the second sliding block is slidingly arranged in the horizontal sliding groove 33 and is connected with the second nut.

[0049] Furthermore, the pipette 2 is provided with a pipette tip disassembly assembly 27; the pipette tip disassembly assembly 27 includes a connecting plate 271, a striking rod 272, and a discharge plate 273; the connecting plate 271 is horizontally disposed at the top of the vertical slide groove 11, the top of the striking rod 272 is connected to the connecting plate 271, and the striking rod 272 is vertically downward; the pipette 2 is provided with a cover 21, and a discharge plate 273 slide groove is provided on the cover 21, and the discharge plate 273 slide groove is vertically downward; the striking rod 272 is disposed inside the cover 21, and a third slider is provided at the top of the striking rod 272; the striking rod 272 is slidably connected to the discharge plate 273 slide groove through the third slider; the striking rod 272 is also provided with a striking block 274, which is connected to the third slider; the striking block 274 is disposed outside the cover 21, and the striking block 274 is located directly below the striking rod 272. In this technical solution, the pipette head disassembly assembly 27 is designed so that after the pipette 2 completes a liquid preparation operation, the first power device drives the pipette 2 to move upward along the vertical slide 11 to the top of the vertical slide 11. At this time, the striking rod 272 at the top of the vertical slide 11 impacts the striking block 274 at the top of the unloading plate 273, thereby causing the unloading plate 273 to move downward along the unloading plate 273 slide. During the movement, the bottom end of the unloading plate 273 knocks the pipette head 32 off the pipette 2, thereby completing the automatic disassembly of the pipette head 32.

[0050] Furthermore, it also includes a pipette tip collection box 6, which is disposed at the bottom of the mounting bracket 1 and located below the pipette 2. In this technical solution, the pipette tip collection box 6 facilitates the collection and processing of multiple disassembled pipette tips 32.

[0051] Furthermore, the pipette 2 includes a third motor 22, a third lead screw 23, a piston rod 24, a sleeve 25, and a sleeve housing 26. The top end of the third lead screw 23 is connected to the output end of the third motor 22; the top end of the piston rod 24 is connected to the bottom end of the third lead screw 23; the sleeve 25 is fitted over the piston rod 24, and the piston rod 24 and the sleeve 25 are slidably connected; the sleeve housing 26 is fitted over the sleeve 25. In this technical solution, the pipette 2 has an electric piston structure, which can drive the third lead screw 23 to rotate via the third motor 22, and drive the piston rod 24 connected to the bottom of the third lead screw 23 to move up and down within the sleeve 25, thereby completing the liquid collection and injection operations.

[0052] Furthermore, the pipette 2 also includes an air pump 28, which is connected to an exhaust pipe, and the exhaust pipe is connected to an air valve 29; the side wall of the sleeve 25 is provided with an interface, and the air pump 28 is connected to the interface through the air valve 29. In this technical solution, the air pump 28 can blow out the residual liquid inside the pipette 2 during liquid injection, reducing the error in solution preparation.

[0053] Further, the three groups of pipettes 2 are respectively a first pipette, a second pipette and a third pipette; the liquid taking range of the first pipette is 100-1000ul, the liquid taking range of the second pipette is 10-100ul, and the liquid taking range of the third pipette is 1-10ul. In the technical solution, three different specifications of pipettes 2 are provided, and different pipettes 2 can be selected according to different liquid taking amounts.

[0054] Further, the supporting box 31 comprises a supporting bottom plate 311, a top cover 312, a supporting bracket 313, a torsion sheet roll 314 and a damping strip 315; the supporting bracket 313 is arranged above the supporting bottom plate 311, and seven groups of parallel first grooves are formed in the supporting bracket 313; the torsion sheet roll 314 has seven groups, and the seven groups of torsion sheet rolls 314 are coaxial; one group of torsion sheet rolls 314 is arranged at one end of one group of first grooves; the top cover 312 is arranged outside the supporting bracket 313 and the torsion sheet roll 314, and seven groups of parallel second grooves are formed in the top cover 312, one group of second grooves is located directly above one group of first grooves; the free end of one group of torsion sheet rolls 314 is located between one group of first grooves and one group of second grooves, and the free end of the torsion sheet roll 314 is provided with four mounting hole positions, one pipette head 32 is arranged in one mounting hole position, and the top end of the pipette head 32 is located above the second groove, and the bottom end of the pipette head 32 is located below the second groove; the damping strip 315 is arranged on the torsion sheet roll 314 and located between the torsion sheet roll 314 and the top cover 312. In the structure of the supporting box 31, the first row of pipette heads 32 can be used one by one during the movement of the supporting box 31 along the horizontal sliding groove 33, after the first row of pipette heads 32 are used up, the second row of pipette heads 32 moves to the position of the first row of pipette heads 32 during the rolling of the torsion sheet roll 314, so that the second row of pipette heads 32 can be used, and the arrangement of the damping strip 315 can slow down the movement speed of the free end of the torsion sheet roll 314 driving the pipette head 32, so that the movement is more stable.

[0055] Further, one end of the second groove close to the torsion sheet roll 314 is provided with a positioning baffle. In the technical solution, the positioning baffle can position the pipette head 32, so that the pipette head 32 is more stable.

[0056] Further, the pipette head device 3 further comprises an ultraviolet lamp 35, one ultraviolet lamp 35 is arranged in the storage box 34, and one ultraviolet lamp 35 is arranged on the supporting bottom plate 311. In the technical solution, the arrangement of the ultraviolet lamp 35 can sterilize and disinfect the pipette head 32.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An automated liquid preparation system, characterized in that: Includes mounting brackets, pipettes, pipette tip devices, dispensing turntables, and dispensing turntables; The top of the mounting bracket is provided with a vertical sliding groove, the pipette is slidably disposed in the vertical sliding groove, and a first power device is provided between the vertical sliding groove and the pipette; The pipette tip assembly is located below the pipette; the pipette tip assembly includes a support box, a pipette tip, a horizontal chute, and a storage box; multiple pipette tips are disposed on the support box, the horizontal chute is disposed on the mounting bracket, the support box is slidably connected to the horizontal chute, and a second power device is provided between the horizontal chute and the support box; the storage box is disposed at one end of the horizontal chute, and the other end of the horizontal chute is located below the pipette; the storage box has an inlet, and the support box can enter the storage box from the inlet along the horizontal chute; the support box includes a support base plate, a top cover, a support bracket, a twisted plate roll, and a damping strip; the support bracket is disposed above the support base plate, and seven sets of parallel... The first channel; the twisted roll has seven sets, and the seven sets of twisted rolls are coaxial; one set of the twisted rolls is disposed at one end of one set of the first channel; the top cover is disposed over the support bracket and the twisted rolls, and the top cover has seven sets of parallel second channels, one set of the second channels being located directly above one set of the first channels; the free end of one set of the twisted rolls is located between one set of the first channels and one set of the second channels, and the free end of the twisted rolls has four mounting holes, one pipette is disposed in one of the mounting holes, and the top end of the pipette is located above the second channel, and the bottom end of the pipette is located below the second channel; the damping strip is disposed on the twisted rolls and is located between the twisted rolls and the top cover; The bottom of the mounting bracket is a bracket base, and the liquid injection turntable is mounted on the bracket base; the liquid collection turntable is mounted above the liquid injection turntable and is coaxial with the liquid injection turntable; the liquid injection turntable is connected to a first rotary motor, and the liquid collection turntable is connected to a second rotary motor; both the liquid injection turntable and the liquid collection turntable have a large-diameter circular structure; the liquid injection turntable is provided with multiple liquid injection tubes, which are evenly distributed on the same arc line; the liquid collection turntable is provided with multiple liquid collection tubes, which are evenly distributed on the same arc line, and one liquid collection tube is located above one of the liquid injection tubes; The pipettes are distributed along the same arc; the arc containing the pipettes is located above the arc containing the liquid collection tube, and is coaxial and has the same diameter as the arc containing the liquid collection tube and the arc containing the liquid injection tube.

2. The automatic liquid preparation system according to claim 1, characterized in that: The first power device includes a first motor and a first lead screw; the first motor is disposed at the top of the vertical slide groove, and the output end of the first motor is connected to the first lead screw; the first lead screw is vertically disposed on the rear side of the vertical slide groove, and a first lead screw nut is provided on the first lead screw; the pipette is provided with a first slider, the first slider is slidably disposed in the vertical slide groove and connected to the first lead screw nut; The second power device includes a second motor and a second lead screw; the second motor is disposed at one end of the horizontal slide groove, and the output end of the second motor is connected to the second lead screw; the second lead screw is horizontally disposed at the bottom of the horizontal slide groove, and the second lead screw is provided with a second lead screw nut; the support box is provided with a second slider, the second slider is slidably disposed in the horizontal slide groove and connected to the second lead screw nut.

3. The automatic liquid preparation system according to claim 1, characterized in that: The pipette is equipped with a pipette tip disassembly assembly; the pipette tip disassembly assembly includes a connecting plate, a striking rod, and a discharge plate; the connecting plate is horizontally positioned at the top of the vertical groove, the top of the striking rod is connected to the connecting plate, and the striking rod is vertically downward; the pipette is externally equipped with a cover, the cover having a discharge plate groove, and the discharge plate groove is vertically downward; the striking rod is located inside the cover, and the top of the striking rod has a third slider; the striking rod is slidably connected to the discharge plate groove via the third slider; the striking rod also has a striking block, the striking block being connected to the third slider; the striking block is located outside the cover, and the striking block is directly below the striking rod.

4. The automatic liquid preparation system according to claim 1, characterized in that: It also includes a pipette tip collection box, which is disposed at the bottom of the mounting bracket and located below the pipette.

5. The automatic liquid preparation system according to claim 1, characterized in that: The pipette includes a third motor, a third lead screw, a piston rod, a sleeve, and a sleeve housing; The top end of the third lead screw is connected to the output end of the third motor; the top end of the piston rod is connected to the bottom end of the third lead screw; the sleeve is fitted over the piston rod, and the piston rod and the sleeve are slidably connected; the sleeve outer shell is fitted over the sleeve.

6. The automatic liquid preparation system according to claim 5, characterized in that: The pipette also includes an air pump, which is connected to an exhaust pipe and an air valve; the side wall of the sleeve is provided with an interface, and the air pump is connected to the interface through the air valve.

7. The automatic liquid preparation system according to claim 1, characterized in that: The pipettes are configured in three groups: a first pipette, a second pipette, and a third pipette. The first pipette has a liquid taking range of 100-1000 μl, the second pipette has a liquid taking range of 10-100 μl, and the third pipette has a liquid taking range of 0.5-10 μl.

8. The automatic liquid preparation system according to claim 1, characterized in that: A positioning baffle is provided at one end of the second channel near the twisted roll.

9. The automatic liquid preparation system according to claim 1, characterized in that: The pipette device also includes an ultraviolet lamp, one of which is disposed in the storage box and the other is disposed on the support base plate.

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