CN217549060U - Automatic post passing equipment - Google Patents

Abstract

The utility model relates to a chemistry experiment instrument technical field especially relates to an automatic cross post equipment. The device comprises a liquid feeding assembly, wherein the liquid feeding assembly comprises a movable plate and a liquid feeding gun head, the movable plate is arranged on the rack in a sliding mode, and the liquid feeding gun head is arranged on the movable plate in a sliding mode; the first lifting assembly is connected with the moving plate and used for driving the moving plate to slide up and down on the rack; the first translation assembly is connected with the liquid feeding gun head and used for driving the liquid feeding gun head to slide on the moving plate; the column bed translation assembly comprises a column bed, and the column bed is used for placing a purification column pipe; the test tube table is used for placing a plurality of sample test tubes; and the sample table is used for placing the suction head and the test bottle. This equipment is through the action of each subassembly, and the simulation tradition manual operation process, and then realizes full-automatic operation flow, simultaneously economical and practical with the effectual waste of avoiding the sample material.

Description

Automatic post passing equipment

Technical Field

The utility model relates to a chemistry experiment instrument technical field especially relates to an automatic cross post equipment.

Background

Column chromatography, also known as chromatography. The method is a distribution method taking distribution balance as a mechanism. The chromatographic system comprises two phases, one being a stationary phase and one being a mobile phase. When the two phases move relatively, the difference of the distribution equilibrium property of each component in the mixture is repeatedly used for a plurality of times, and finally the aim of separating the components from each other is achieved. Chromatography has been known for over eighty years since the invention. It is a common method for purifying and separating organic or inorganic substances. Wherein the chromatogram with the stationary phase more polar than the mobile phase is a normal phase chromatogram and the reverse phase chromatogram is the reverse phase chromatogram.

In the traditional purification or separation operation, the operation of each part needs manual intervention, so that the column passing operation becomes complicated and changeable, and the phenomenon of flow cutoff is easy to occur, such as flow cutoff, sample preparation, column filling and sample loading are required to be carried out again, so that serious resource waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic cross post equipment for need the manual work to intervene, make the loaded down with trivial details and easy error's problem of taking place among the solution prior art in the post experiment operation.

In order to solve the problem, the utility model provides an automatic post equipment of crossing, which comprises a frame, be provided with a post device in the frame at least, cross the post device and include:

the liquid feeding assembly comprises a movable plate and a liquid feeding gun head, the movable plate is arranged on the rack in a sliding mode, and the liquid feeding gun head is arranged on the movable plate in a sliding mode;

the first lifting assembly is fixedly arranged on the rack and connected with the moving plate, and the first lifting assembly is used for driving the moving plate to slide up and down on the rack;

the first translation assembly is fixed on the moving plate and connected with the liquid adding gun head, and the first translation assembly is used for driving the liquid adding gun head to slide on the moving plate;

the column bed translation assembly comprises a column bed, the column bed is arranged on the rack in a sliding mode, and the column bed is used for placing a purification column pipe;

the test tube table is arranged at the bottom of the rack in a sliding manner corresponding to the column bed and is used for placing a plurality of sample test tubes;

the sample platform, the sample platform set up in the frame bottom, the sample platform is used for placing suction head and test tube bottle.

In a possible implementation manner, preferably, the first lifting assembly includes a first motor and a first lead screw, the first motor is fixedly disposed on the frame, an output end of the first motor is connected to the first lead screw, one end of the first lead screw, which is far away from the first motor, is rotatably disposed on the frame through a support, and the first lead screw is connected to the moving plate through a lead screw nut.

In a possible implementation manner, preferably, the first translation assembly includes a second motor and a first synchronizing wheel, the second motor is fixedly disposed on the moving plate, an output end of the second motor is connected with the first synchronizing wheel, and the first synchronizing wheel is connected with the liquid adding gun head through a synchronizing belt.

In a possible implementation manner, preferably, the bed translation assembly further includes a second translation assembly, the second translation assembly includes a third motor, a fixed plate, a sliding plate, and a second lead screw, the fixed plate is fixedly disposed on the frame, the third motor is fixedly disposed on the fixed plate, the third motor is connected to the sliding plate through the second lead screw, and an end of the sliding plate, which is far away from the fixed plate, is fixedly connected to the bed.

In a possible embodiment, preferably, a first detector is disposed on the bed at an end close to the test tube stage, the first detector is used for detecting whether the sample test tube on the test tube stage has liquid passing through the test tube stage within a set time, a second detector is disposed on the bed at a position for placing the purification column tube, the second detector is used for detecting whether the purification column tube has liquid passing through the purification column tube within a set time, and a liquid level detector is disposed on the bed at an end far from the test tube stage, and the liquid level detector is used for detecting a liquid level state in the purification column tube.

In a possible embodiment, preferably, the column passing device further includes a third translation assembly, the third translation assembly includes a fourth motor, a second synchronous wheel and a connecting plate, the fourth motor is fixedly disposed on the rack, the fourth motor is connected with the second synchronous wheel, the second synchronous wheel is connected with the connecting plate through a synchronous belt, and the connecting plate is fixedly connected with the test tube table.

In a possible implementation manner, preferably, the column passing device further includes a second lifting assembly, the second lifting assembly is disposed on the frame, the second lifting assembly includes a fifth motor and a third lead screw, the fifth motor is fixedly disposed on the frame, the fifth motor is connected with the third lead screw, and the third lead screw is connected with the sample stage through a lead screw nut.

In a possible implementation manner, preferably, the liquid feeding assembly further comprises an injector, the injector is arranged in the rack, the injector is communicated with the liquid feeding gun head, and the injector is used for controlling the liquid sucking action and the liquid dropping action of the liquid feeding gun head.

In a possible embodiment, preferably, the liquid adding assembly further comprises a sixth motor, the sixth motor is connected with the injector, and an origin photoelectric switch is arranged on the injector and used for recording the position of an injection origin.

In a possible implementation manner, preferably, the column passing device further comprises a liquid storage box set, the liquid storage box set comprises a plurality of wide-mouth bottles and a spray head, the wide-mouth bottles are communicated with the spray head, and the spray head is arranged on the liquid adding gun head.

The beneficial effects of the utility model are that: the utility model provides an automatic cross post equipment, be applied to in the experimental operation of crossing the post, this equipment includes the frame, set up a post device of crossing in the frame at least, each crosses all including the liquid feeding subassembly on the post device, a lifting unit, a translation subassembly, column bed translation subassembly, test tube platform and sample platform, wherein the liquid feeding subassembly includes movable plate and liquid feeding rifle head, a lifting unit is connected with the movable plate, be used for realizing the upper and lower slip of movable plate in the frame, a translation subassembly and liquid feeding rifle head connection, be used for realizing the slip of liquid feeding rifle head on the movable plate, column bed translation subassembly includes the column bed, the column bed is used for placing the purification column pipe, test tube platform and sample platform all set up in the frame bottom simultaneously, and then at first lifting unit of control, the automation of post operation can be realized to first translation subassembly and column bed translation subassembly going on, through the traditional manual operation process of automatic simulation, not only make this post device of crossing become economical and practical, simultaneously effectual waste of avoiding the sample material, make the great reduction of single sample cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view showing the overall structure of an automatic column-passing apparatus;

FIG. 2 shows a schematic view of the overall structure of a single over-column device;

FIG. 3 is a schematic view showing the structure of the test tube stand when it is set on the rack;

FIG. 4 is a partial enlarged schematic view of portion A of FIG. 3;

fig. 5 shows a schematic view of the overall structure of the filling assembly;

FIG. 6 is a schematic view showing a connection structure of the sample stage and the second lifting assembly;

fig. 7 shows a schematic view of the overall structure of the syringe.

Description of the main element symbols:

1-a frame; 10-a column-passing device; 20-a liquid storage tank group; 21-jar; 22-a spray head; 30-purifying the column tube; 40-sample tube; 50-test vial; 60-a suction head; 70-control terminal; 100-a liquid feeding assembly; 110-a moving plate; 120-liquid adding gun head; 130-a syringe; 131-a sixth motor; 132-origin opto-electronic switch; 200-a first lifting assembly; 210-a first motor; 220-a first lead screw; 300-a first translation assembly; 310-a second motor; 320-a first sync wheel; 400-a bed translation assembly; 410-a bed; 411 — first detector; 412-a second detector; 413-liquid level detector; 500-test tube bench; 600-a sample stage; 700-a second translation assembly; 710-a third motor; 720-fixing plate; 730-a sliding plate; 740-a second lead screw; 800-a third translation assembly; 810-a fourth electric machine; 820-a second synchronizing wheel; 830-a connecting plate; 900-a second lifting assembly; 910-a fifth motor; 920-third screw rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 and 2, the present invention provides an automatic column passing apparatus, which includes a frame 1, wherein at least one column passing device 10 is disposed on the frame 1 (a plurality of column passing devices 10 are disposed on the frame 1, and each column passing device 10 has the same structure and components), the column passing device 10 includes a liquid adding assembly 100, a first lifting assembly 200, a first translation assembly 300, a column bed translation assembly 400, a test tube platform 500, and a sample platform 600, wherein the liquid adding assembly 100 includes a moving plate 110 and a liquid adding gun head 120, the moving plate 110 is slidably disposed on the frame 1, and the liquid adding gun head 120 is slidably disposed on the moving plate 110; the first lifting assembly 200 is fixedly arranged on the rack 1, and the first lifting assembly 200 is connected with the moving plate 110 and used for driving the moving plate 110 to slide up and down on the rack 1; the first translation assembly 300 is fixedly arranged on the moving plate 110, and the first translation assembly 300 is connected with the liquid feeding gun head 120 and used for driving the liquid feeding gun head 120 to slide on the moving plate 110; the column bed translation assembly 400 comprises a column bed 410, the column bed 410 is slidably arranged on the frame 1, and the column bed 410 is used for placing the purifying column tube 30; the test tube table 500 is arranged at the bottom of the rack 1 and is used for placing a plurality of sample test tubes 40; the sample stage 600 is disposed at the bottom of the rack 1, and is used for placing the pipette tip 60 and the cuvette bottle 50.

Specifically, the first lifting assembly 200 includes a first motor 210 and a first lead screw 220, the first motor 210 is fixedly disposed on the frame 1, an output end of the first motor 210 is fixedly connected to the first lead screw 220, the first lead screw 220 is connected to the moving plate 110 through a lead screw nut, and an end of the first lead screw 220, which is far away from the first motor 210, is rotatably disposed on the frame 1 through a bracket (a fixed structural member having a bearing). It can be understood that, when the first motor 210 is operated, the first screw 220 can drive the moving plate 110 to slide up and down on the frame 1, and further can drive the liquid adding gun head 120 disposed on the moving plate 110 to move up and down.

Referring to fig. 5, specifically, the first translation assembly 300 includes a second motor 310 and a first synchronizing wheel 320, the second motor 310 is fixedly disposed on the moving plate 110, the first synchronizing wheel 320 is connected to the second motor 310, and the first synchronizing wheel 320 is connected to the liquid adding gun head 120 through a synchronizing belt. It can be understood that when the second motor 310 is operated, the timing belt and the first timing wheel 320 are further driven to rotate, so as to drive the filling gun head 120 to slide on the moving plate 110.

It can be understood that the first lifting assembly 200 and the first translating assembly 300 are mutually matched to realize the up-and-down and left-and-right sliding of the filling gun head 120 on the frame 1.

Referring to fig. 2 and 3, the bed translation assembly 400 is fixedly disposed on the frame 1, the bed translation assembly 400 includes a second translation assembly 700 besides the bed 410 which is slidably disposed, and the second translation assembly 700 is used for realizing the sliding of the bed 410 on the frame 1.

Specifically, the second translation assembly 700 includes a third motor 710, a fixed plate 720, a sliding plate 730 and a second lead screw 740, the fixed plate 720 is fixedly arranged on the frame 1, the third motor 710 is fixedly arranged on the fixed plate 720, the third motor 710 is connected with the second lead screw 740, the second lead screw 740 is connected with the sliding plate 730 through a lead screw nut, and one end of the sliding plate 730 far away from the fixed plate 720 is fixedly connected with the column bed 410.

It will be appreciated that when the third motor 710 is activated, the sliding plate 730 is further driven to slide, and thus the column bed 410 is driven to slide left and right on the frame 1.

In the above scheme, the second translation assembly 700 can enable the column bed 410 to better cooperate with the liquid feeding gun head 120 to perform a liquid dropping action, so as to effectively improve the operation precision of the column passing device 10.

In the above technical solution, the test tube table 500 and the sample table 600 are disposed at the bottom of the rack 1, a plurality of sample test tubes 40 are placed on the test tube table 500, the sample test tubes 40 are placed corresponding to the purifying column tubes 30 on the column bed 410, the suction head 60 and the test tube bottle 50 are placed on the sample table 600, the first lifting assembly 200 and the first translation assembly 300 cooperate to drive the filling gun head 120 to be close to the sample table 600, the further filling gun head 120 is fixed to the suction head 60 and then extracted, the further suction head 60 is driven to extend into the test tube bottle 50 to extract a sample, the further filling gun head 120 is driven to move to the position above the purifying column tubes 30 to perform a dropping action, and meanwhile, the plurality of sample test tubes 40 on the test tube table 500 collect a solution dropping in the purifying column tubes 30.

The further second translation assembly 700 drives the column bed 410 and the liquid adding gun head 120 to adjust the positions, so that the automatic operation of column passing operation is realized, the traditional manual operation process is automatically simulated, the column passing device is enabled to be economical and practical, and the waste of sample materials can be effectively avoided.

Referring to fig. 3, on the basis of the above scheme, a plurality of sensors are disposed on the column bed 410, specifically, a first detector 411 is disposed on one end of the column bed 410 close to the tube stage 500, at least one second detector 412 is disposed on the column bed 410 for placing the purification column tube 30, and a liquid level detector 413 is disposed on one end of the column bed 410 away from the tube stage 500, wherein the first detector 411 is used for detecting the cleanliness of the sample tube 40 on the tube stage 500 (i.e., the sample tube 40 has no other impurities or liquid existing before dripping), the second detector 411 is used for detecting the cleanliness of the purification column tube 30, and the liquid level detector 413 is used for detecting the liquid level state in the purification column tube 30.

Preferably, the first detector 411 and the second detector 412 both use infrared sensors, but laser sensors and the like may also be used.

It will be appreciated that the first detector 411 is capable of detecting whether there is liquid in the sample tube 40 for a certain period of time, and if not, determining that there is no solution in the purge column 30 at that time; the second detector 412 detects whether the purification column 30 has liquid passing through it for a certain time, and if not, it can be determined that there is no solution in the purification column.

It will be appreciated that in the case where the first detector 411 detects that the sample tube 40 on the tube stage 500 contains impurities, the tube stage 500 will be moved and another sample tube 40 will be exchanged to collect the sample solution; in case that the second detector 412 detects that the purification column tube 30 contains impurities, the liquid adding gun head 120 stops adding liquid.

Referring to fig. 3 and 4, as a preferred embodiment of the present invention, the column passing device 10 further includes a third translation assembly 800, and the third translation assembly 800 is used for enabling the test tube platform 500 to slide on the bottom of the rack 1.

Specifically, the third translation assembly 800 includes a fourth motor 810, a second synchronous wheel 820 and a connection plate 830, the fourth motor 810 is fixedly disposed on the rack 1, the fourth motor 810 is connected with the second synchronous wheel 820, the second synchronous wheel 820 is connected with the connection plate 830 through a synchronous belt, and the connection plate 830 is connected with the test tube stage 500.

It can be understood that, when fourth motor 810 moves, it can drive test tube platform 500 to slide on the bottom of frame 1, and then can drive the liquid outlet of purifying column tube 30 and sample test tube 40 to carry out position matching, very big improvement the work precision of passing post device 10 and the effectual unrestrained of avoiding sample solution.

Referring to fig. 2 and 6, as a preferred embodiment of the present invention, the column passing device 10 further includes a second lifting assembly 900, and the second lifting assembly 900 is used for realizing the up-and-down movement of the sample table 600 in the rack 1.

Specifically, the second lifting assembly 900 includes a fifth motor 910 and a third screw 920, the fifth motor 910 is fixedly disposed on the frame 1, meanwhile, the fifth motor 910 is connected to the third screw 920, and the third screw 920 is connected to the sample stage 600 through a screw nut, it can be understood that, when the fifth motor 910 acts, the sample stage 600 can be driven to move up and down, and thus the operation precision of extracting the suction head 60 from the liquid adding gun head 120 and extracting the sample solution from the test tube bottle 50 can be effectively improved.

Referring to fig. 7, based on the above scheme, the charging assembly 100 further includes an injector 130, the injector 130 is disposed in the frame 1, and the injector 130 is communicated with the charging gun head 120, and the injector 130 is used to control the liquid suction and dropping actions of the charging gun head 120.

Specifically, the liquid adding assembly 130 further comprises a sixth motor 131 and an origin photoelectric switch 132, the injector 130 is connected with the sixth motor 131, the origin photoelectric switch 132 is disposed on the injector 130, and the origin photoelectric switch 132 is used for recording the position of the injection origin.

It can be understood that, when the sixth motor 131 acts, can drive the syringe 130 to carry out imbibition action or dropping action, and the position of injection origin can be recorded to the while origin photoelectric switch 132, and then can let the automatic imbibition of liquid feeding rifle head 120 realization and dropping liquid.

On the basis of above-mentioned scheme, cross post device 10 and still include liquid storage tank group 20, liquid storage tank group 20 is used for storing to carry out the spray rinsing to crossing post device 10 behind the pure water.

Specifically, liquid storage tank group 20 includes a plurality of jars 21 and a plurality of shower nozzle 22, and jars 21 and shower nozzle 22 communicate, and shower nozzle 22 sets up on liquid feeding rifle head 120 simultaneously, can understand, after shower nozzle 22 sprays the pure water, and then can wash each part on the post device 10, the error of effectual reduction experiment.

On the basis of above-mentioned scheme, this equipment still includes control terminal 70, control terminal 70 simultaneously with cross each motor electric connection on the post device 10, can realize the automation mechanized operation of post device through control terminal 70's control, of course, control terminal 70 how realizes that automatically controlled belongs to ripe prior art, and does not belong to the utility model discloses modified direction.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The utility model provides an automatic post equipment of crossing, includes the frame, be provided with at least one in the frame and cross post device, its characterized in that, cross post device and include:

the liquid feeding assembly comprises a movable plate and a liquid feeding gun head, the movable plate is arranged on the rack in a sliding mode, and the liquid feeding gun head is arranged on the movable plate in a sliding mode;

the first lifting assembly is fixedly arranged on the rack and connected with the moving plate, and the first lifting assembly is used for driving the moving plate to slide up and down on the rack;

the first translation assembly is fixed on the moving plate and connected with the liquid adding gun head, and the first translation assembly is used for driving the liquid adding gun head to slide on the moving plate;

the column bed translation assembly comprises a column bed, the column bed is arranged on the rack in a sliding mode, and the column bed is used for placing a purification column pipe;

the test tube table is arranged at the bottom of the rack in a sliding manner corresponding to the column bed and is used for placing a plurality of sample test tubes;

the sample platform, the sample platform set up in the frame bottom, the sample platform is used for placing suction head and test tube bottle.

2. The automatic column passing device according to claim 1, wherein the first lifting assembly comprises a first motor and a first lead screw, the first motor is fixedly arranged on the frame, an output end of the first motor is connected with the first lead screw, one end of the first lead screw, which is far away from the first motor, is rotatably arranged on the frame through a support, and the first lead screw is connected with the moving plate through a lead screw nut.

3. The automatic column passing equipment according to claim 1, wherein the first translation assembly comprises a second motor and a first synchronizing wheel, the second motor is fixedly arranged on the moving plate, an output end of the second motor is connected with the first synchronizing wheel, and the first synchronizing wheel is connected with the liquid feeding gun head through a synchronizing belt.

4. The automatic column passing device according to claim 1, wherein the column bed translation assembly further comprises a second translation assembly, the second translation assembly comprises a third motor, a fixed plate, a sliding plate and a second lead screw, the fixed plate is fixedly arranged on the frame, the third motor is fixedly arranged on the fixed plate, the third motor is connected with the sliding plate through the second lead screw, and one end of the sliding plate, which is far away from the fixed plate, is fixedly connected with the column bed.

5. The automatic column passing device according to claim 1, wherein a first detector is arranged at one end of the column bed close to the test tube table and used for detecting whether liquid passes through the sample test tube on the test tube table within a set time, a second detector is arranged at the position of the column bed for placing the purification column tube and used for detecting whether liquid passes through the purification column tube within the set time, and a liquid level detector is arranged at one end of the column bed far away from the test tube table and used for detecting the liquid level state in the purification column tube.

6. The automatic column passing device of claim 1, further comprising a third translation assembly, wherein the third translation assembly comprises a fourth motor, a second synchronous wheel and a connecting plate, the fourth motor is fixedly arranged on the rack, the fourth motor is connected with the second synchronous wheel, the second synchronous wheel is connected with the connecting plate through a synchronous belt, and the connecting plate is fixedly connected with the test tube table.

7. The automatic column passing device according to claim 1, further comprising a second lifting assembly, wherein the second lifting assembly is arranged on the frame, the second lifting assembly comprises a fifth motor and a third screw rod, the fifth motor is fixedly arranged on the frame, the fifth motor is connected with the third screw rod, and the third screw rod is connected with the sample stage through a screw nut.

8. The automatic column passing equipment according to claim 1, wherein the liquid feeding assembly further comprises a syringe, the syringe is arranged in the frame, the syringe is communicated with the liquid feeding gun head, and the syringe is used for controlling liquid suction and dropping actions of the liquid feeding gun head.

9. The automatic column passing device of claim 8, wherein the liquid feeding assembly further comprises a sixth motor, the sixth motor is connected with the injector, and an origin photoelectric switch is arranged on the injector and used for recording the position of an injection origin.

10. The automatic column passing device according to claim 1, further comprising a liquid storage tank set, wherein the liquid storage tank set comprises a plurality of wide-mouth bottles and spray heads, the wide-mouth bottles are all communicated with the spray heads, and the spray heads are arranged on the liquid adding gun heads.

Images