CN220294715U - Liquid feeding device and experimental facilities - Google Patents

Abstract

The utility model provides a liquid feeding device and experimental facilities, this liquid feeding device includes: the liquid adding assembly comprises a liquid adding needle and a bearing tray, and the liquid adding needle is fixedly arranged on the bearing tray in a penetrating manner; the liquid pumping assembly comprises a control valve and a driving pump and is used for conveying the reagent in the liquid storage bottle to the liquid adding needle; and the carrying assembly is used for clamping and moving the bearing tray so as to move the liquid adding needle to the target container to be added with liquid. According to the liquid adding device and the experimental equipment, the liquid adding needle is moved by arranging the carrying assembly, the position of the liquid adding needle can be adjusted according to the position of the target container, so that the positions of the liquid adding needle and the target container are matched, reagent is accurately input into the target container through the liquid adding needle, the degree of freedom and the flexibility of the liquid adding assembly are improved, the liquid adding assembly can be matched with target containers in various shapes or volumes, the applicability of the liquid adding device is improved, and the automation degree and the working efficiency of the liquid adding device are improved.

Description

Liquid feeding device and experimental facilities

Technical Field

The utility model relates to the technical field of experimental equipment, in particular to a liquid adding device and experimental equipment.

Background

Along with the gradual wide application of the automation technology in the biomedical field, the automation and the intellectualization of the organic synthesis experiment are gradually realized, and the completeness and the integration of the reagent synthesis operation process under the cooperation of robots are higher and higher.

In the prior art, the liquid adding device is integrated, and the time of an operator is required to replace different reaction containers so as to receive the reagent output from the liquid adding device. However, for the reaction vessel with larger volume in the organic synthesis experiment, the reaction vessel is often difficult to be accurately and effectively matched with the liquid adding device, the applicability of the liquid adding device is affected, and meanwhile, the automation degree and the working efficiency of liquid adding operation are reduced.

Disclosure of Invention

The utility model aims to provide a liquid adding device and experimental equipment, and solves the technical problem of low applicability of the liquid adding device in the prior art.

In order to achieve the purpose of the utility model, the utility model provides the following technical scheme:

in a first aspect, the present utility model provides a liquid feeding device comprising:

the liquid adding assembly comprises a liquid adding needle and a bearing tray, and the liquid adding needle is fixedly arranged on the bearing tray in a penetrating manner;

the liquid pumping assembly comprises a control valve and a driving pump, a first interface of the control valve is communicated with a liquid storage bottle, a second interface of the control valve is communicated with the driving pump, a third interface of the control valve is communicated with the liquid adding needle, and the driving pump is used for conveying the reagent in the liquid storage bottle to the liquid adding needle;

and the carrying assembly is used for clamping and moving the bearing tray so as to move the liquid adding needle to a target container to be added with liquid.

In a possible implementation manner, the liquid adding device further comprises a support frame, the support frame comprises a tray placing plate, the tray placing plate is provided with a placing position, the bearing tray is detachably placed in the placing position, and the carrying assembly is used for taking and placing the bearing tray from the placing position;

the placing position comprises a supporting surface and a slot, the slot penetrates through the tray placing plate in the thickness direction of the tray placing plate, the supporting surface is used for supporting the bearing tray, and the slot is used for accommodating the liquid adding needle to penetrate through.

In one possible implementation manner, the number of the placement positions is multiple, the placement positions are distributed on the tray placement plate at intervals, the number of the bearing trays is multiple, the bearing trays are in one-to-one correspondence with the placement positions, and each bearing tray is fixedly connected with one liquid adding needle.

In a possible implementation manner, the number of the liquid adding needles is the same as that of the liquid pumping assemblies, and the liquid adding needles are respectively arranged in one-to-one correspondence with the control valve, the driving pump and the liquid storage bottle.

In a possible implementation manner, the placement position further includes a first positioning member, where the first positioning member is fixedly disposed on the supporting surface, and the bearing tray is provided with a second positioning member, and the first positioning member is configured to cooperate with the second positioning member to position the bearing tray.

In a possible implementation manner, the placement position further includes a first magnetic member, the first magnetic member is fixedly disposed on the supporting surface, the carrying tray is provided with a second magnetic member, and the first magnetic member is magnetically connected with the second magnetic member.

In a possible implementation manner, the support frame further comprises a receiving plate, the receiving plate and the tray placing plate are arranged at intervals and are located below the tray placing plate, the receiving plate is provided with a receiving groove, and the receiving groove is used for receiving the reagent dropped from the liquid adding needle.

In a possible implementation manner, the holding part is vertically connected to the carrying tray, and is located at one end of the carrying tray far away from the liquid adding needle, the holding part and the liquid outlet of the liquid adding needle are located at two sides of the carrying tray far away from each other, and the holding part is used for holding the carrying assembly.

In a possible implementation manner, a first port of the control valve is communicated with the liquid storage bottle through a first pipeline, a second port of the control valve is communicated with the driving pump through a second pipeline, and a third port of the control valve is communicated with a liquid adding needle through a third pipeline;

the liquid adding device further comprises a pipeline limiting part, a plurality of mutually-spaced through holes are formed in the pipeline limiting part, and at least one of the first pipeline, the second pipeline and the third pipeline penetrates through the through holes.

In a possible implementation manner, the liquid adding device further comprises a fixing frame, the control valve and the driving pump are both installed on the fixing frame, and the pipeline limiting part is arranged on the top end of the fixing frame.

In one possible implementation manner, the liquid adding device further comprises a cleaning assembly, wherein the cleaning assembly comprises a waste liquid bottle and a cleaning tank which are communicated with each other, the cleaning tank is used for being communicated with the liquid adding needle to be cleaned, and the waste liquid bottle is used for receiving waste liquid flowing out of the cleaning tank.

In a possible implementation manner, the cleaning pool is provided with a first cleaning channel, and the first cleaning channel is used for assisting in cleaning the outer wall of the liquid adding needle;

the first cleaning channel comprises a first section and a second section which are communicated with each other; the first section is provided with a first runner inlet, the liquid adding needle stretches into the first runner inlet when the outer wall is cleaned, the second section is provided with a first runner outlet, and the first runner outlet is communicated with the waste liquid bottle;

the first flow outlet is located on a side of the first segment adjacent the first flow inlet; and/or the communication port of the second section and the first section is positioned on one side of the first section close to the first flow channel inlet.

In a possible implementation manner, the cleaning tank is further provided with a second cleaning channel, the second cleaning channel is used for assisting in cleaning the inner wall of the liquid adding needle, and the second cleaning channel is mutually separated from the first cleaning channel;

the second cleaning channel comprises a third section and a fourth section which are communicated with each other, the third section extends along a first direction, the fourth section extends along a second direction, and the first direction and the second direction have an included angle alpha, so that the following conditions are satisfied: alpha is more than or equal to 90 degrees;

one end of the third section is provided with a second runner inlet, when the inner wall is cleaned, the liquid adding needle stretches into the second runner inlet, the other end of the third section is connected with the first end of the fourth section, the second end of the fourth section is provided with a second runner outlet, and the second runner outlet is communicated with the waste liquid bottle.

In a possible implementation manner, the number of the first cleaning channels is a plurality, and the plurality of the first cleaning channels are mutually separated.

In a second aspect, the present utility model provides an experimental apparatus, comprising a liquid adding device provided in any embodiment of the first aspect.

According to the liquid adding device and the experimental equipment, the liquid adding needle is moved by arranging the carrying assembly, the position of the liquid adding needle can be adjusted according to the position of the target container, so that the positions of the liquid adding needle and the target container are matched, reagent is accurately input into the target container through the liquid adding needle, the degree of freedom and the flexibility of the liquid adding assembly are improved, the liquid adding assembly can be matched with target containers in various shapes or volumes, the applicability of the liquid adding device is improved, and the automation degree and the working efficiency of the liquid adding device are improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a liquid feeding apparatus according to an embodiment;

FIG. 2 is a partial perspective view of an embodiment of a fluid delivery device;

FIG. 3 is a partial front view of an embodiment of a priming device;

FIG. 4 is a partial top view of an embodiment of a fluid delivery device;

FIG. 5 is a top view of a support bracket of an embodiment;

FIG. 6 is a perspective view of a priming assembly of one embodiment;

FIG. 7 is a schematic diagram of the wiring of a filling device according to an embodiment;

FIG. 8 is a front view of an infusion assembly of an embodiment;

FIG. 9 is a side view of an extraction assembly of an embodiment;

FIG. 10 is a perspective view of a cleaning assembly of an embodiment;

FIG. 11 is a perspective view of a wash basin of an embodiment;

FIG. 12 is a front view of a cleaning tank of an embodiment;

FIG. 13 is a top view of a wash basin of an embodiment;

FIG. 14 is a side view of a cleaning tank of an embodiment.

Reference numerals illustrate:

11-a liquid adding component; 111-a liquid adding needle; 112-carrying a tray; 113-a clamping member; 114-a second positioning member; 115-a second magnetic member; 116-a first surface; 117-a second surface; 12-supporting frames; 121-place bit; 122-slots; 123-a first positioning member; 124-a first magnetic member; 125-tray placement plate; 126-a receiving plate; 127-receiving groove; 128-a support surface;

2-a liquid pumping component; 21-a control valve; 22-driving a pump; 23-fixing frame; 231-pipe stop; 232-control panel; 233-a communication adapter plate;

31-a first line; 32-a second line; 33-a third line;

4-cleaning assembly; 41-a cleaning tank; 411-first purge channel; 4111-first segment; 4112-second segment; 4113-first flow channel inlet; 4114-first flow channel outlet; 412-a second purge channel; 4121-third segment; 4122-fourth segment; 4123-a second flow path inlet; 4124-second flow path outlet; 42-supporting columns; 43-chassis;

100-liquid storage bottle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the description of the embodiments of the present utility model, it should be noted that, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to the orientation or positional relationship described based on the drawings, which are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 to 9, the present utility model provides a liquid adding device, which includes a liquid adding assembly 11, a liquid extracting assembly 2 and a carrying assembly (not shown in the drawings).

The liquid adding assembly 11 comprises a liquid adding needle 111 and a bearing tray 112, and the liquid adding needle 111 is fixedly arranged on the bearing tray 112 in a penetrating mode.

The liquid pumping assembly 2 comprises a control valve 21 and a driving pump 22, a first interface of the control valve 21 is communicated with the liquid storage bottle 100, a second interface of the control valve 21 is communicated with the driving pump 22, a third interface of the control valve 21 is communicated with the liquid adding needle 111, and the driving pump 22 is used for conveying the reagent in the liquid storage bottle 100 to the liquid adding needle 111.

The handling assembly is used for clamping and moving the carrying tray 112 to move the filling needle 111 to a target container to be filled.

The liquid storage bottle 100 is used for containing a reagent, the target container is used for receiving the reagent flowing out of the liquid adding needle 111, the reagent in the liquid storage bottle 100 enters the liquid adding needle 111 under the drive of the liquid pumping assembly 2, and then flows into the target container from the liquid adding needle 111, so that liquid adding work is completed.

In this embodiment, the filling needle 111 is movable relative to other components of the filling device, and the handling assembly can move the filling needle 111 to the position of the target container without manually moving the target container to the position of the filling needle 111, so that the filling efficiency can be improved for a target container with a larger volume or inconvenient movement, and the duration of manual operation can be reduced. The liquid adding device in the embodiment can be adapted to more types of target containers, and the applicability of the liquid adding device is greatly improved.

Illustratively, the drive pump 22 may be a plunger pump, syringe pump, diaphragm pump, peristaltic pump, or the like, capable of pumping and pumping reagents, and capable of controlling the amount and rate of addition of liquid. The control valve 21 may be a multidirectional electric valve, a pneumatic valve, a hydraulic valve, or the like, and can adjust the on/off of the liquid path. Preferably, the control valve 21 is a two-position three-way electromagnetic valve, a first port of the control valve 21 is connected with the liquid storage bottle 100, a second port of the control valve 21 is connected with the driving pump 22, and a third port of the control valve 21 is connected with the liquid adding needle 111.

The driving pump 22 works positively, the driving pump 22 pumps the reagent from the liquid storage bottle 100, and the reagent enters the first interface of the control valve 21 from the liquid storage bottle 100 and then flows into the second interface and enters the cavity of the driving pump 22; after a specified amount of reagent is extracted, the pump 22 is driven to operate in the reverse direction, the reagent flows out from the second port, flows into the third port, enters the filling needle 111, and finally the reagent is discharged from the filling needle 111 into the target container.

According to the liquid adding device provided by the utility model, the liquid adding needle 111 is moved by arranging the carrying assembly, the position of the liquid adding needle 111 can be adjusted according to the position of the target container, so that the positions of the liquid adding needle 111 and the liquid adding needle are matched, reagent is accurately input into the target container through the liquid adding needle 111, the degree of freedom and the flexibility of the liquid adding assembly 11 are improved, the liquid adding assembly 11 can be matched with target containers in various shapes or volumes, the applicability of the liquid adding device is improved, and the automation degree and the working efficiency of the liquid adding device are improved.

In a further embodiment, the filling device further comprises a support frame 12, the support frame 12 comprises a tray placing plate 125, the tray placing plate 125 is provided with a placing position 121, the carrying tray 112 is detachably placed in the placing position 121, and the carrying assembly takes and places the carrying tray 112 from the placing position 121. The upper surface of the tray placing plate 125 is a supporting surface 128, the placing position 121 includes a supporting surface 128 and a slot 122, the slot 122 penetrates through the tray placing plate 125 along the thickness direction of the tray placing plate 125, the supporting surface 128 is used for supporting the carrying tray 112, and the slot 122 is used for accommodating the filling needle 111 to penetrate through. As shown in fig. 3, the tray placing plate 125 is used for placing the carrying tray 112 on a side facing away from the ground, the slot 122 penetrates through the thickness direction of the tray placing plate 125, the length direction of the slot 122 is parallel to the width direction of the tray placing plate 125, and the filling needle 111 extends out of the slot 122. The groove walls of the slots 122 define the positions of the filling needles 111 in a horizontal plane, specifically, define the positions of the filling needles 111 in the direction of the arrangement and distribution of the plurality of slots 122, and prevent the filling needles 111 from being shifted.

Alternatively, as shown in fig. 5, the slot 122 is opened at one end along its length direction, and the side wall of the tray placing plate 125 is connected with the slot wall of the slot 122, so as to form a semi-closed "U" shaped opening slot on the tray placing plate 125, and the filling needle 111 abuts against the slot wall of the slot 122 at one side far away from the opening end. Alternatively, the slot 122 may be a closed slot with a continuous slot wall, that is, the side wall of the tray placing plate 125 is not connected to the slot wall of the slot 122, so that the filling needle 111 can be inserted and the filling needle 111 can be limited.

Specifically, the number of the placement positions 121 is plural, the placement positions 121 are spaced apart from each other on the tray placement plate 125, the number of the liquid adding needles 111 is plural, the number of the carrying trays 112 is plural, the carrying trays 112 are in one-to-one correspondence with the placement positions 121, and each carrying tray 112 is fixedly connected with one liquid adding needle 111. In this embodiment, the liquid adding assembly 11 includes a plurality of liquid adding needles 111, and the plurality of liquid adding needles 111 are placed in the placement positions 121 in a one-to-one correspondence and spaced apart from each other, so as to form a plurality of independent liquid adding channels, and the liquid adding device can simultaneously perform multi-channel liquid adding, thereby not only improving liquid adding efficiency, but also preventing cross contamination between different reagents.

The number of the liquid adding needles 111 is the same as that of the liquid extracting assemblies 2, and the liquid adding needles 111 are respectively arranged in one-to-one correspondence with the control valve 21, the driving pump 22 and the liquid storage bottle 100. Each liquid adding needle 111 corresponds to one reagent independently and can be controlled to add liquid independently, and the liquid storage bottles 100 can contain different reagents, so that the liquid adding needles 111 can drop different reagents correspondingly, and the multi-component reagent liquid adding of the liquid adding device is realized.

The placement position 121 further includes a first positioning member 123, where the first positioning member 123 is fixedly disposed on the supporting surface 128, and the carrying tray 112 is provided with a second positioning member 114, and the first positioning member 123 is configured to cooperate with the second positioning member 114 to position the carrying tray 112. Through the cooperation of the first positioning piece 123 and the second positioning piece 114, the position is unified when the carrying tray 112 is placed each time, and the carrying tray is not offset, so that the accuracy of taking and placing the carrying tray 112 by the carrying assembly is improved.

Illustratively, one of the first positioning member 123 and the second positioning member 114 is a pin, and the other is a pin hole, in which the pin is inserted, to position the carrying tray 112 on the placement position 121, for example, the first positioning member 123 is a pin protruding with respect to the supporting surface 128, and the second positioning member 114 is a pin hole provided at the bottom of the carrying tray 112. It is understood that one of the first positioning member 123 and the second positioning member 114 may be a protrusion, and the other may be a recess, which is not limited herein.

Optionally, the supporting surface 128 is provided with a plurality of first positioning members 123, at least two first positioning members 123 are provided on each placement position 121, and the second positioning members 114 on the carrying tray 112 are correspondingly connected with the first positioning members 123 on the placement positions 121 in a one-to-one matching manner, so as to accurately position the carrying tray 112, for example, as shown in fig. 5, two first positioning members 123 are provided on each placement position 121, the two first positioning members 123 are distributed diagonally, and two second positioning members 114 distributed diagonally are also provided on the carrying tray 112.

In one embodiment, the placement position 121 is provided with a first magnetic member 124, the first magnetic member 124 is fixedly disposed on the supporting surface 128, the carrying tray 112 is provided with a second magnetic member 115, and the first magnetic member 124 and the second magnetic member 115 are magnetically connected. Illustratively, the supporting surface 128 is provided with a plurality of first magnetic members 124, at least one first magnetic member 124 is provided on each placement position 121, and the carrying tray 112 is provided with a second magnetic member 115, so that the connection stability of the filling needle 111 on the supporting frame 12 is enhanced by using the magnetic connection between the first magnetic member 124 and the second magnetic member 115, and the shaking or shifting of the filling needle 111 on the placement positions 121 is prevented.

As shown in fig. 5, each placement position 121 is provided with two first magnetic members 124, the two first magnetic members 124 are distributed diagonally, and when viewed in the top view direction of the tray placement plate 125, a connecting line between the two first magnetic members 124 and a connecting line between the two first positioning members 123 have an intersection point, so that the placement can ensure that the carrying tray 112 is stable enough when the tray placement plate 125 is placed. The two second magnetic elements 115 on the carrying tray 112 are also diagonally distributed to correspond to the first magnetic elements 124 one by one.

In an alternative embodiment, as shown in fig. 2 and 3, the support frame 12 further includes a receiving plate 126, where the receiving plate 126 is spaced from the tray placing plate 125 and is located below the tray placing plate 125, and the receiving plate 126 is provided with a receiving groove 127, and the receiving groove 127 is used for receiving the reagent dropped from the filling needle 111. The receiving groove 127 is recessed relative to the surface of the receiving plate 126 on one side close to the tray placing plate 125, and the residual reagent of the liquid adding needle 111 placed in the placing position 121 drops and is collected in the receiving groove 127, so that the residual reagent is prevented from dropping on the ground or the table surface to cause pollution.

The holding tray 112 is vertically connected with a holding piece 113, the holding piece 113 is located at one end of the holding tray 112 far away from the liquid adding needle 111, the holding piece 113 and the liquid outlet of the liquid adding needle 111 are located at two sides of the holding tray 112 far away from each other, and the holding piece 113 is used for holding a carrying assembly. By providing the clamping pieces 113 for matching clamping, the possibility that the carrying assembly collides with the liquid adding needle 111 during clamping can be reduced; in addition, compared with the two sides of the direct clamping bearing tray 112, the clamping stroke of the clamping jaw on the carrying assembly can be reduced by arranging the clamping pieces 113, and the use requirement on the clamping jaw is reduced.

As shown in fig. 6, the carrying tray 112 is flat, and the filling needle 111 and the holding member 113 are parallel to each other and are perpendicular to the carrying tray 112. The bearing tray 112 has a first surface 116 and a second surface 117 facing away from each other, the clamping member 113 protrudes outwards relative to the first surface 116 of the bearing tray 112, the liquid adding needle 111 integrally penetrates through the bearing tray 112, a liquid feeding connector is connected to one side of the first surface 116, and the liquid adding needle 111 is communicated with the control valve 21 through the liquid feeding connector and outputs a reagent to one side of the second surface 117. In the case where the filling needle 111 performs filling or is placed in the placement position 121, the carrying tray 112 is parallel to the horizontal plane so that the reagent flows vertically from the filling needle 111 into the target container.

The gripping members 113 may be used to be identified and gripped, and the handling assembly grips the gripping members 113 on the carrier tray 112, thereby gripping and moving the entire filling needle 111 from the placement position 121. Preferably, the clamping member 113 is made of a material resistant to corrosion and organic reagents, such as PEEK (polyetheretherketone), to prevent corrosion by the reagents.

The liquid adding device further comprises a first pipeline 31, a second pipeline 32 and a third pipeline 33, wherein a first interface of the control valve 21 is communicated with the liquid storage bottle 100 through the first pipeline 31, a second interface of the control valve 21 is communicated with the driving pump 22 through the second pipeline 32, and a third interface of the control valve 21 is communicated with the liquid adding needle 111 through the third pipeline 33.

The liquid adding device further comprises a pipeline limiting part 231, wherein the pipeline limiting part 231 is provided with a plurality of mutually-spaced through holes, and at least one of the first pipeline 31, the second pipeline 32 and the third pipeline 33 penetrates through the through holes. The first pipeline 31, the second pipeline 32 and the third pipeline 33 are all made of corrosion-resistant and organic reagent-resistant materials, such as PTFE (polytetrafluoroethylene), so that the pipelines are prevented from being corroded by the reagents and the service life of the pipelines is prevented from being influenced. Through setting up pipeline locating part 231, can make the distribution of pipeline more clean and tidy and reasonable, prevent to produce between the pipeline and interfere or twine.

The third pipes 33 are illustratively disposed through the through holes of the pipe stoppers 231 in a one-to-one correspondence. Since the filling needles 111 can move along with the carrying assembly, by restricting the third pipelines 33 corresponding to the respective filling needles 111, it is possible to avoid interference of the pipelines during movement of the filling needles 111, which affects movement of the filling needles 111 and output of the reagent.

As shown in fig. 8 and 9, the liquid pumping assembly 2 further includes a fixing frame 23, the control valve 21 and the driving pump 22 are both mounted on the fixing frame 23, and the pipe limiting member 231 is disposed at the top end of the fixing frame 23. As shown in fig. 9, the control valve 21 and the drive pump 22 are respectively mounted on both sides of the mount 23 facing away from each other, and the drive pump 22 is closer to the support frame 12 than the control valve 21. The fixing frame 23 is further used for installing a control board 232 and a communication adapter plate 233 of the driving pump 22, so as to ensure that the respective electric connection and communication connection of the driving pump 22 and the control valve 21 are performed normally.

On the basis of any one of the above embodiments, the liquid adding device further comprises a cleaning assembly 4, the cleaning assembly 4 comprises a waste liquid bottle and a cleaning tank 41 which are communicated with each other, the cleaning tank 41 is used for being communicated with a liquid adding needle 111 to be cleaned, and the waste liquid bottle is used for receiving waste liquid flowing out of the cleaning tank 41. The waste liquid bottle is made of corrosion-resistant and organic reagent-resistant materials, such as PTFE (polytetrafluoroethylene).

Specifically, the driving pump 22 works forward, the driving pump 22 pumps the cleaning liquid from the solvent bottle, the cleaning liquid flows from the solvent bottle through the first pipeline 31 into the first interface of the control valve 21, and then flows into the cavity of the driving pump 22 through the second pipeline 32; after the specified amount of cleaning liquid is extracted, the pump 22 is driven to work reversely, the cleaning liquid flows into the control valve 21 through the second pipeline 32, enters the liquid adding needle 111 through the third pipeline 33 from the third interface, finally the cleaning liquid is discharged from the liquid adding needle 111 to the cleaning assembly 4, the outer wall and the inner wall of the liquid adding needle 111 are cleaned in the cleaning assembly 4, and the cleaned waste liquid flows out of the cleaning tank 41 to the waste liquid bottle. The solvent bottle may be the liquid storage bottle 100, and the cleaning solution is a reagent contained in the liquid storage bottle 100 during the liquid filling operation, or the liquid storage bottle may be replaced by a solvent bottle containing a liquid for cleaning the liquid filling needle 111, which is not limited herein.

Further, the cleaning tank 41 is provided with a first cleaning channel 411, and the first cleaning channel 411 is used for assisting the outer wall of the liquid adding needle 111 to clean.

As shown in fig. 11, the cleaning tank 41 has a rectangular block structure, and a first cleaning channel 411 for cleaning the outer wall of the liquid feeding needle 111 is formed inside the cleaning tank 41. The first cleaning channel 411 is capable of accommodating at least a partial area of the filling needle 111, and the cleaning liquid cleans the outer wall of the filling needle 111 in the first cleaning channel 411. The first cleaning channel 411 is communicated with the liquid adding needle 111, and waste liquid generated after the outer wall is washed is output to a waste liquid bottle.

In an alternative embodiment, as shown in fig. 10, the cleaning assembly 4 further comprises a support post 42 and a chassis 43, the support post 42 being connected to the cleaning tank 41 and the chassis 43, respectively, the cleaning tank 41 being mounted to the chassis 43 by the support post 42.

In particular embodiments, as shown in fig. 12-14, the first purge channel 411 includes a first segment 4111 and a second segment 4112 in communication with each other. The first section 4111 has a first fluid inlet 4113, and the fluid feeding needle 111 extends from the first fluid inlet 4113 when the outer wall is cleaned, and the second section 4112 has a first fluid outlet 4114, the first fluid outlet 4114 communicating with the waste bottle; the first fluid outlet 4114 is located on a side of the first segment 4111 proximate to the first fluid inlet 4113 and/or the second segment 4112 is located on a side of the first segment 4111 proximate to the first fluid inlet 4113 in communication with the first segment 4111.

The first section 4111 extends along a first preset direction, and illustratively, in a use state of the cleaning tank 41, the first preset direction is perpendicular to the horizontal direction, the first fluid passage inlet 4113 is located on a top wall of the cleaning tank 41 facing away from the ground, and the fluid adding needle 111 is vertically inserted into the first section 4111.

The second segment 4112 may be a linear channel or a curved channel, and illustratively, the second segment 4112 is a linear channel and extends along a second preset direction, an included angle between the first preset direction and the second preset direction may be any angle ranging from 0 ° to 180 ° (excluding 0 ° and 180 °), for example, as shown in fig. 14, the first channel outlet 4114 and the communication port between the second segment 4112 and the first segment 4111 are both located on a side of the first segment 4111 near the first channel inlet 4113, the first segment 4111 is perpendicular to the second segment 4112, and the included angle between the first preset direction and the second preset direction is 90 °. Alternatively, the first flow outlet 4114 is disposed near the first flow inlet 4113, and the first flow outlet 4114 is higher than the height of the end of the first segment 4111 (i.e., the end far from the first flow inlet 4113) and the height of the communication port between the second segment 4112 and the first segment 4111, and the angle between the first preset direction and the second preset direction is an acute angle. Alternatively, the communication port between the first segment 4111 and the second segment 4112 is disposed near the first flow channel inlet 4113, and the height of the communication port is higher than the height of the first flow channel outlet 4114 and the height of the end of the first segment 4111, and the included angle between the first preset direction and the second preset direction is an obtuse angle. It should be noted that, with the midpoint of the length direction of the first section 4111 as a demarcation point, the area from the first fluid inlet 4113 to the midpoint is the side of the first section 4111 near the first fluid inlet 4113, and the remaining area is the side of the first section 4111 far from the first fluid inlet 4113.

In the use state of the purge tank 41, the height of the first flow channel outlet 4114 is higher than the height of the end of the first segment 4111 and/or the height of the communication port between the first segment 4111 and the second segment 4112 is higher than the end of the first segment 4111, and after the purging liquid flows from the filling needle 111 to the first segment 4111, the purging liquid does not flow out of the purge tank 41 immediately, and the liquid level in the first segment 4111 gradually rises to make the purging liquid contact with the outer wall of the filling needle 111, thereby purging the outer wall of the filling needle 111. As the amount of the cleaning liquid in the first cleaning channel 411 increases, the liquid level of the cleaning liquid in the first cleaning channel 411 gradually reaches the height of the first flow channel outlet 4114 or the height of the communication port between the first segment 4111 and the second segment 4112, and the cleaned waste liquid flows out from the first flow channel outlet 4114 to the waste liquid bottle.

In one embodiment, the cleaning tank 41 is further provided with a second cleaning channel 412, the second cleaning channel 412 is used for assisting the cleaning of the inner wall of the liquid adding needle 111, and the second cleaning channel 412 is separated from the first cleaning channel 411. The second purge channel 412 includes a third segment 4121 and a fourth segment 4122 in communication with each other, the third segment 4121 extending in a first direction and the fourth segment 4122 extending in a second direction, the first and second directions having an included angle α, satisfying: alpha is more than or equal to 90 degrees. The third segment 4121 has a second flow inlet 4123 at one end and the filling needle 111 extends from the second flow inlet 4123 during cleaning of the inner wall, the other end of the third segment 4121 is connected to the first end of the fourth segment 4122, the second end of the fourth segment 4122 has a second flow outlet 4124, and the second flow outlet 4124 communicates with the waste bottle.

In the use state of the washing tank 41, the first direction is perpendicular to the horizontal direction, the second flow passage inlet 4123 is positioned at the top wall of the washing tank 41 facing away from the ground, and the liquid adding needle 111 is vertically inserted into the third segment 4121. In this embodiment, the third segment 4121 and the fourth segment 4122 are each linear flow channels and the second purge channel 412 is a continuously distributed flow channel. By setting the included angle α to be equal to or greater than 90 °, the cleaning liquid in the second cleaning passage 412 does not accumulate and contact the outer wall of the filling needle 111, but directly flows out from the second flow passage outlet 4124 while being highly continuously lowered or kept horizontal in the process of flowing from the second flow passage inlet 4123 to the second flow passage outlet 4124.

Alternatively, the third segment 4121 and the fourth segment 4122 may be curved flow paths as long as no high turning back point is achieved during the flow of cleaning fluid from the third segment 4121 to the second flow path outlet 4124.

In one embodiment, the number of first purge channels 411 is a plurality, and the plurality of first purge channels 411 are spaced apart from one another. By providing a plurality of first cleaning channels 411, the cleaning tank 41 can simultaneously clean the outer walls of the plurality of liquid adding needles 111, so that the cleaning efficiency is improved; by providing a plurality of first cleaning channels 411 to be separated from each other, the outer wall cleaning work of the plurality of liquid feeding needles 111 is performed independently, and is not interfered with each other, so that cross contamination is prevented.

Optionally, the number of the second cleaning channels 412 is one, and different liquid adding needles 111 can all clean the inner wall through the second cleaning channels 412, and since the liquid adding needles 111 cannot accumulate cleaning liquid in the second cleaning channels 412 when cleaning the inner wall, that is, the liquid is discharged, the structure of the cleaning tank 41 can be simplified and cross contamination cannot occur by adopting one second cleaning channel 412 to clean different liquid adding needles 111. For example, as shown in fig. 13, the top wall of the purge tank 41 is provided with four first flow path inlets 4113 and one second flow path inlet 4123, and the purge tank 41 has four first purge passages 411 and one second purge passage 412. Alternatively, the number of the second cleaning passages 412 may be plural.

The utility model also provides experimental equipment, which comprises the liquid adding device provided by any embodiment. Wherein, experimental facilities can be provided with experimental platform, and liquid feeding device's at least part can be installed in this experimental platform, for example, liquid feeding subassembly, drawing liquid subassembly and transport subassembly all can be located experimental platform. For another example, the liquid adding component and the liquid extracting component are arranged on the experimental platform, and the carrying component is a mobile robot capable of moving at will.

In the description of the present specification, a description referring to the terms "embodiment," "specific embodiment," "example," or "specific example," etc., 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, but all or part of the procedures for implementing the above embodiments can be modified by one skilled in the art according to the scope of the appended claims.

Claims (15)

1. A liquid adding device, comprising:

the liquid adding assembly comprises a liquid adding needle and a bearing tray, and the liquid adding needle is fixedly arranged on the bearing tray in a penetrating manner;

the liquid pumping assembly comprises a control valve and a driving pump, a first interface of the control valve is communicated with a liquid storage bottle, a second interface of the control valve is communicated with the driving pump, a third interface of the control valve is communicated with the liquid adding needle, and the driving pump is used for conveying the reagent in the liquid storage bottle to the liquid adding needle;

and the carrying assembly is used for clamping and moving the bearing tray so as to move the liquid adding needle to a target container to be added with liquid.

2. The liquid adding device according to claim 1, further comprising a support frame, the support frame comprising a tray placement plate, the tray placement plate being provided with a placement site, the carrying tray being detachably placed in the placement site, the carrying assembly taking and placing the carrying tray from the placement site;

the placing position comprises a supporting surface and a slot, the slot penetrates through the tray placing plate in the thickness direction of the tray placing plate, the supporting surface is used for supporting the bearing tray, and the slot is used for accommodating the liquid adding needle to penetrate through.

3. The liquid adding device according to claim 2, wherein the number of the placing positions is plural, the plurality of placing positions are distributed on the tray placing plate at intervals, the number of the carrying trays is plural, the plurality of carrying trays are in one-to-one correspondence with the placing positions, and each carrying tray is fixedly connected with one liquid adding needle.

4. The liquid adding device according to claim 3, wherein the number of the liquid adding needles is the same as the number of the liquid pumping assemblies, and the liquid adding needles are respectively arranged in one-to-one correspondence with the control valve, the driving pump and the liquid storage bottle.

5. The liquid adding device according to claim 2, wherein the placement position further comprises a first positioning member fixedly arranged on the supporting surface, the carrying tray is provided with a second positioning member, and the first positioning member is used for being matched with the second positioning member to position the carrying tray.

6. The liquid adding device according to claim 2, wherein the placement position further comprises a first magnetic member, the first magnetic member is fixedly arranged on the supporting surface, the carrying tray is provided with a second magnetic member, and the first magnetic member and the second magnetic member are magnetically connected.

7. The liquid adding device according to claim 2, wherein the supporting frame further comprises a receiving plate, the receiving plate is arranged at intervals with the tray placing plate and is located below the tray placing plate, the receiving plate is provided with a receiving groove, and the receiving groove is used for receiving the reagent dropped from the liquid adding needle.

8. The liquid adding device according to claim 1, wherein the carrying tray is vertically connected with a clamping member, the clamping member is located at one end of the carrying tray far away from the liquid adding needle, the clamping member and the liquid outlet of the liquid adding needle are located at two sides of the carrying tray far away from each other, and the clamping member is used for clamping the carrying assembly.

9. The fluid delivery device of claim 1, wherein a first port of the control valve is in communication with the fluid reservoir via a first conduit, a second port of the control valve is in communication with the drive pump via a second conduit, and a third port of the control valve is in communication with the fluid delivery needle via a third conduit;

the liquid adding device further comprises a pipeline limiting part, a plurality of mutually-spaced through holes are formed in the pipeline limiting part, and at least one of the first pipeline, the second pipeline and the third pipeline penetrates through the through holes.

10. The liquid feeding device of claim 9, further comprising a fixing frame, wherein the control valve and the driving pump are both mounted on the fixing frame, and the pipeline limiting piece is arranged on the top end of the fixing frame.

11. The liquid feeding device according to any one of claims 1 to 10, further comprising a cleaning assembly comprising a waste liquid bottle and a cleaning tank in communication with each other, the cleaning tank being adapted to be in communication with the liquid feeding needle to be cleaned, the waste liquid bottle being adapted to receive waste liquid flowing out of the cleaning tank.

12. The liquid adding device according to claim 11, wherein the cleaning tank is provided with a first cleaning channel for assisting in cleaning the outer wall of the liquid adding needle;

the first cleaning channel comprises a first section and a second section which are communicated with each other; the first section is provided with a first runner inlet, the liquid adding needle stretches into the first runner inlet when the outer wall is cleaned, the second section is provided with a first runner outlet, and the first runner outlet is communicated with the waste liquid bottle;

the first flow outlet is located on a side of the first segment adjacent the first flow inlet; and/or the communication port of the second section and the first section is positioned on one side of the first section close to the first flow channel inlet.

13. The liquid adding device according to claim 12, wherein the cleaning tank is further provided with a second cleaning channel for assisting the cleaning of the inner wall of the liquid adding needle, the second cleaning channel being separated from the first cleaning channel;

the second cleaning channel comprises a third section and a fourth section which are communicated with each other, the third section extends along a first direction, the fourth section extends along a second direction, and the first direction and the second direction have an included angle alpha, so that the following conditions are satisfied: alpha is more than or equal to 90 degrees;

one end of the third section is provided with a second runner inlet, when the inner wall is cleaned, the liquid adding needle stretches into the second runner inlet, the other end of the third section is connected with the first end of the fourth section, the second end of the fourth section is provided with a second runner outlet, and the second runner outlet is communicated with the waste liquid bottle.

14. The fluid charging apparatus as claimed in claim 12, wherein the number of first cleaning channels is plural, and the plural first cleaning channels are separated from each other.

15. An experimental device comprising a liquid feeding apparatus according to any one of claims 1 to 14.