Anti-dripping mechanism, pipetting device and cup separating equipment

Abstract

The utility model provides an anti-dripping mechanism, a pipetting device and cup separating equipment, the anti-dripping mechanism comprises a liquid receiving component and a driving component, the liquid receiving component receives liquid dropped by a plurality of liquid dropping pieces located above the liquid receiving component, the driving component is connected with the liquid receiving component, and the driving component is connected with the liquid receiving component. The liquid receiving assembly is driven to different positions, so that the liquid receiving assembly is switched between a first state and a second state; when the liquid receiving assembly is in the first state, the projections of the liquid dropping pieces towards the plane where the liquid receiving assembly is located are all located outside the liquid receiving assembly; when the liquid receiving assembly is in the second state, the projection of at least one of the liquid dropping pieces towards the plane where the liquid receiving assembly is located is located in the liquid receiving assembly. According to the cup separating device, the liquid receiving assembly can receive a plurality of liquid dropping pieces at the same time and can also receive part of the liquid dropping pieces, so that the cup separating device is prevented from being polluted to affect work, the cup separating device can be applied to different scenes, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sample processing equipment, in particular to an anti-drip mechanism, a liquid transfer device and a cup separation device. Background Art

[0002] During many operation steps of a cup-dispensing device (for example, during a pipetting step), dripping may occur. To prevent the device from being contaminated by dripping, an anti-drip mechanism is usually installed at the corresponding position.

[0003] The anti-drip mechanism is located below the dripping element used for adding or removing liquid. Conventional anti-drip mechanisms can only simultaneously receive or simultaneously make way for multiple dripping elements to add or remove liquid. However, when some of the dripping elements need to be added or removed, the remaining dripping elements may drip. In this case, the anti-drip mechanism cannot receive the remaining dripping elements, causing contamination of the cup-dispensing equipment and affecting its operation. Therefore, conventional anti-drip mechanisms can only be applied in one scenario. Changing the application scenario requires replacing the anti-drip mechanism, resulting in high costs. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, an anti-drip mechanism is provided, and the technical solution is as follows.

[0005] The anti-drip mechanism includes a liquid contact component and a drive component. The liquid contact component receives liquid dripping from multiple dripping parts located above the liquid contact component. The drive component is connected to the liquid contact component and drives the liquid contact component to different positions to switch the liquid contact component between a first state and a second state. When the liquid contact component is in the first state, the projections of the multiple dripping parts onto the plane where the liquid contact component is located are all located outside the liquid contact component. When the liquid contact component is in the second state, the projection of at least one of the multiple dripping parts onto the plane where the liquid contact component is located is located inside the liquid contact component.

[0006] The anti-drip mechanism of the utility model drives the liquid receiving assembly to switch between the first state and the second state by connecting the driving assembly with the liquid receiving assembly, which not only meets the need of adding or taking liquid simultaneously for multiple dripping parts, but also meets the need of adding or taking liquid for some dripping parts, and realizes that the liquid receiving assembly can receive multiple dripping parts at the same time, and can also receive some dripping parts, thus avoiding contamination of the cupping equipment and affecting its work. At the same time, according to different application scenarios, the position of the liquid receiving assembly can be moved to change the number of dripping parts received, without the need to replace the entire liquid receiving assembly, thereby saving costs.

[0007] Exemplarily, the liquid contacting component has a liquid contacting space and a liquid outlet channel; when the liquid contacting component is in a first state, the projections of multiple dripping parts onto the plane where the liquid contacting component is located are all located outside the liquid contacting space; when the liquid contacting component is in a second state, the projections of some of the multiple dripping parts onto the plane where the liquid contacting component is located are located within the liquid contacting space, and the projections of the remaining part of the multiple dripping parts onto the plane where the liquid contacting component is located are located within the liquid outlet channel, or the projections of multiple dripping parts onto the plane where the liquid contacting component is located are all located within the liquid contacting space.

[0008] Illustratively, a through hole is passed through at least the middle area of ​​the liquid contact space of the liquid contact component, and the through hole forms a liquid outlet channel; and / or a notch is provided on the edge of the liquid contact component, and the notch forms the liquid outlet channel.

[0009] Exemplarily, the liquid contact assembly includes a liquid contact part and a mounting frame, the mounting frame is connected to the driving assembly, the liquid contact part is connected to the mounting frame, and the liquid contact space is provided on the liquid contact part.

[0010] Exemplarily, the liquid receiving part includes a bottom plate with a through hole provided on the bottom plate, an extension portion extending around the through hole in a direction perpendicular to the bottom plate, the inner wall of the extension portion and the through hole together form a liquid outlet channel, and the extension portion separates the liquid receiving space and the liquid outlet channel.

[0011] Exemplarily, a notch is formed at the edge of the bottom plate, and side plates extend along the edge of the notch and the edge of the bottom plate. The side plates, the outer wall of the extension portion and the bottom plate enclose a liquid receiving space.

[0012] Exemplarily, the mounting frame includes a connecting portion and a storage portion, the connecting portion is connected between the driving assembly and the storage portion, the storage portion has a storage space facing the driving assembly, and the liquid contact part is arranged in the storage space.

[0013] Exemplarily, the driving assembly includes a first motor and a supporting slide rail, the supporting slide rail is connected to the liquid contact assembly, and the first motor drives the liquid contact assembly along the supporting slide rail to different positions to switch the liquid contact assembly between the first state and the second state.

[0014] According to another aspect of the present invention, a pipetting device is provided, which includes a pipetting mechanism and the above-mentioned anti-drip mechanism. The pipetting mechanism includes a plurality of dripping parts, and the plurality of dripping parts are located above the liquid receiving assembly.

[0015] According to another aspect of the present invention, a cup-dispensing device is provided. The cup-dispensing device includes an operating table and the above-mentioned pipetting device, and the pipetting device is arranged on the operating table.

[0016] The Summary of the Utility Model introduces a series of simplified concepts, which will be further described in detail in the Detailed Description of the Utility Model. This Summary of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0017] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0019] Figure 1 A perspective view of a portion of a pipetting device according to an exemplary embodiment of the present invention;

[0020] Figure 2 for Figure 1 A three-dimensional diagram of the anti-drip mechanism and part of the dripping member in cooperation;

[0021] Figure 3 for Figure 2 A top view of the liquid contact component of the anti-drip mechanism shown is located in a first position relative to a portion of the dripping member;

[0022] Figure 4 for Figure 2 A top view of the liquid contact component of the anti-drip mechanism shown is located in a second position relative to a portion of the dripping member;

[0023] Figure 5 for Figure 2 A top view of the liquid contact component of the anti-drip mechanism shown is located in a third position relative to a portion of the dripping member;

[0024] Figure 6 for Figure 2 A top view of the liquid contact component of the anti-drip mechanism shown is located in a fourth position relative to a portion of the dripping member;

[0025] Figure 7 for Figure 1 Exploded view of a portion of the wetted components shown.

[0026] The above drawings include the following reference numerals:

[0027] 10. Anti-drip mechanism; 100. Liquid contact assembly; 110. Liquid contact space; 120. Liquid outlet channel; 121. Through hole; 122. Notch; 130. Liquid contact part; 131. Bottom plate; 132. Extension part; 133. Side plate; 140. Mounting frame; 141. Connecting part; 142. Storage part; 1421. Storage space; 1422. Notch; 1423. Through hole; 200. Driving assembly; 210. First motor; 220. Support rail; 221. Sliding support part; 222. Fixed support part; 230. Screw; 240. Origin sensing structure; 241. Origin sensing sheet; 242. Origin sensor; 30. Pipetting mechanism; 310. Dropping part; 311. First dripping part; 312. Second dripping part; 320. First guide rail assembly; 330. Second motor. DETAILED DESCRIPTION

[0028] In the following description, numerous details are provided to facilitate a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, and that the present invention may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well known in the art have not been described in detail.

[0029] To thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0030] The embodiment of the present invention provides an anti-drip mechanism. The anti-drip mechanism provided by the present invention can be applied to a liquid transfer device, and the liquid transfer device with the anti-drip mechanism can be applied to a cup-dispensing device.

[0031] In order to understand the present invention as a whole, the liquid transfer device using the anti-drip mechanism will first be described with reference to the accompanying drawings.

[0032] See Figure 1For commonly used cup-dispensing equipment in laboratories (not shown), its pipetting device typically includes a pipetting mechanism 30 and an anti-drip mechanism 10. The pipetting mechanism 30 includes multiple dripping elements 310 (e.g., pipettes) for adding or removing liquid, a first guide rail assembly 320, and a second motor 330. The multiple dripping elements 310 can be arranged in rows or columns. There can be multiple first guide rail assemblies 320. The multiple dripping elements 310 can be connected to the multiple first guide rail assemblies 320 in a one-to-one correspondence. The second motor 330 can be used to drive the dripping elements 310 to move vertically along the first guide rail assemblies 320. This improves the operating efficiency of the pipetting device. It should be noted that adding liquid refers to the operation of adding liquid to the container to be added, and removing liquid refers to the operation of drawing liquid from the reagent tube. At least a portion of the anti-drip mechanism 10 is typically located below the dripping element 310 to receive liquid dripping from the dripping element 310 to prevent contamination of the cup-dispensing equipment.

[0033] The following will describe in detail an anti-drip mechanism according to an embodiment of the present invention in conjunction with the accompanying drawings.

[0034] See also Figure 1 and Figure 2 The anti-drip mechanism 10 may include a liquid contact assembly 100 and a drive assembly 200. The liquid contact assembly 100 can receive liquid dripping from multiple dripping parts 310 located above the liquid contact assembly 100. The drive assembly 200 can be connected to the liquid contact assembly 100 and drive the liquid contact assembly 100 to different positions so that the liquid contact assembly 100 can switch between a first state and a second state. The first state can be a yielding state of the liquid contact assembly 100, that is, multiple dripping parts 310 are yielded simultaneously. The second state can be a liquid contacting state, that is, at least one dripping part 310 is receiving liquid. When the liquid contact assembly 100 is in the first state, the projections of the multiple dripping parts 310 onto the plane where the liquid contact assembly 100 is located can all be located outside the liquid contact assembly 100. When the liquid contact assembly 100 is in the second state, the projection of at least one of the multiple dripping parts 310 onto the plane where the liquid contact assembly 100 is located can be located inside the liquid contact assembly 100.

[0035] The anti-drip mechanism 10 of the present invention is connected to the liquid contacting component 100 through the driving component 200 to drive the liquid contacting component 100 to switch between the first state and the second state, which not only meets the need of multiple dripping parts 310 to add or take liquid at the same time, but also meets the need of some dripping parts 310 to add or take liquid. It enables the liquid contacting component 100 to receive multiple dripping parts 310 at the same time and also to receive some dripping parts 310. In this way, the cupping equipment is prevented from being contaminated and affecting its work. At the same time, the position of the liquid contacting component 100 can be moved according to different application scenarios to change the number of dripping parts 310 received, without the need to replace the entire liquid contacting component 100, thereby saving costs.

[0036] See also Figures 2 to 6 , the specific introduction is made by taking the number of the dripping parts 310 as an example, and for the convenience of description, they are respectively called the first dripping part 311 and the second dripping part 312. The driving component 200 can drive the liquid contact component 100 to be in the first position (such as Figure 3 ), the first dripping member 311 and the second dripping member 312 can add or take liquid at the same time, so that the liquid contact component 100 is in the first state. The driving component 200 can drive the liquid contact component 100 to be in the second position (such as Figure 4 ), the first dripping member 311 can add or take liquid, and the second dripping member 312 can be received by the liquid contact component 100; the driving component 200 can also drive the liquid contact component 100 to be in the third position (such as Figure 5 ), the second dripping member 312 can add or take liquid, and the first dripping member 311 can be received by the liquid contact component 100; the driving component 200 can also drive the liquid contact component 100 to be located in the fourth position (such as Figure 6 ), the first dripping member 311 and the second dripping member 312 can be received by the liquid contact assembly 100 at the same time; thus, the liquid contact assembly 100 is in the second state. In this way, the driving assembly 200 drives the liquid contact assembly 100 to move to different positions, switching the liquid contact assembly 100 to different states, thereby expanding the application scenarios of the drip prevention mechanism 10.

[0037] See Figure 1 and Figure 2The liquid contact assembly 100 may include a liquid contact space 110 and a liquid outlet channel 120. When the liquid contact assembly 100 is in a first state, the projections of the multiple dripping elements 310 onto the plane where the liquid contact assembly 100 is located may all be located outside the liquid contact space 110. When the liquid contact assembly 100 is in a second state, the projections of some of the multiple dripping elements 310 onto the plane where the liquid contact assembly 100 is located may be located within the liquid contact space 110, while the projections of the remaining dripping elements 310 onto the plane where the liquid contact assembly 100 is located may be located within the liquid outlet channel 120, or the projections of the multiple dripping elements 310 onto the plane where the liquid contact assembly 100 is located may all be located within the liquid contact space 110. In this way, the liquid dripping from the dripping part 310 can be received through the liquid receiving space 110 to prevent the cup-dispensing device from being contaminated and affecting the operation of the cup-dispensing device, and the liquid outlet channel 120 can enable part of the dripping part 310 to add liquid or take liquid, so that the liquid receiving component 100 can be applied to more scenarios.

[0038] See also Figures 2 to 7 , a through hole 121 may be passed through the liquid receiving component 100 at least in the middle area of ​​the liquid receiving space 110. The through hole 121 may form a liquid outlet channel 120. In this way, it is ensured that one or more dripping parts 310 near the middle can perform liquid adding or liquid taking operations through the liquid outlet channel 120, and at the same time it is ensured that the dripping parts 310 that do not perform liquid adding or liquid taking operations can be received by the liquid receiving component 100. The number of through holes 121 may be one or more. The shape of the through hole 121 may be circular, which facilitates the passage of a dripping part 310 for liquid receiving or liquid taking operations. Of course, it is not ruled out that the through hole 121 may be of other shapes, which facilitates the passage of multiple dripping parts 310 of the same or different shapes for liquid receiving or liquid taking operations, or facilitates the passage of a dripping part 310 of different shapes for liquid receiving or liquid taking operations.

[0039] Again, refer to Figures 2 to 7 , the edge of the liquid receiving component 100 may be provided with a notch 122. The notch 122 may form a liquid outlet channel 120. In this way, it is ensured that one or more dripping parts 310 close to the edge can perform liquid adding or liquid taking operations through the liquid outlet channel 120, and at the same time it is ensured that the dripping parts 310 that do not perform liquid adding or liquid taking operations can be received by the liquid receiving component 100. The number of notches 122 may be one or more. The edge of the notch 122 may be an arc segment, which facilitates a dripping part 310 to pass through for liquid receiving or liquid taking operations. Of course, it is not ruled out that the edge of the notch 122 may be other shapes, which facilitates the passage of multiple dripping parts 310 of the same or different shapes to perform liquid receiving or liquid taking operations, or facilitates the passage of a dripping part 310 of different shapes to perform liquid receiving or liquid taking operations.

[0040] In one embodiment of the present invention, refer again to Figures 2 to 7, the liquid receiving assembly 100 can be provided with a through hole 121 penetrating a middle region of the liquid receiving space 110, and at the same time, a notch 122 is provided at an edge of the liquid receiving assembly 100 away from a corner of the driving assembly 200. In this way, when the number of the drop liquid pieces 310 is two, the driving assembly 200 can drive the liquid receiving assembly 100 to be located at a first position, and the projections of the first drop liquid piece 311 and the second drop liquid piece 312 on the plane where the liquid receiving assembly 100 is located can both be located outside the liquid receiving space 110, so that the liquid receiving assembly 100 is in a first state. The driving assembly 200 can drive the liquid receiving assembly 100 to be located at a second position, and the projection of the first drop liquid piece 311 on the plane where the liquid receiving assembly 100 is located can be located in the notch 122, and the projection of the second drop liquid piece 312 on the plane where the liquid receiving assembly 100 is located can be located in the liquid receiving space 110; the driving assembly 200 can also drive the liquid receiving assembly 100 to be located at a third position, and the projection of the second drop liquid piece 312 on the plane where the liquid receiving assembly 100 is located can be located in the through hole 121, and the projection of the first drop liquid piece 311 on the plane where the liquid receiving assembly 100 is located can be located in the liquid receiving space 110; the driving assembly 200 can also drive the liquid receiving assembly 100 to be located at a fourth position, and the projections of the first drop liquid piece 311 and the second drop liquid piece 312 on the plane where the liquid receiving assembly 100 is located can both be located in the liquid receiving space 110; so that the liquid receiving assembly 100 is in a second state. The driving assembly 200 drives the liquid receiving assembly 100 to move to different positions to switch the liquid receiving assembly 100 to different states, so as to ensure that part of the drop liquid pieces 310 can perform liquid adding or liquid taking operation through the liquid outlet channel 120, and at the same time, ensure that the drop liquid pieces 310 which do not perform liquid adding or liquid taking operation can be received by the liquid receiving assembly 100.

[0041] Again in combination with reference to Figure 1 and Figure 2 , the liquid receiving assembly 100 can have a liquid receiving piece 130 and a mounting frame 140. The mounting frame 140 can be connected with the driving assembly 200. The liquid receiving piece 130 can be connected to the mounting frame 140. The liquid receiving space 110 can be arranged on the liquid receiving piece 130. The liquid receiving piece 130 is indirectly connected with the driving assembly 200 through the mounting frame 140, which helps to reduce direct stress and impact. Specifically, the liquid receiving piece 130 is detachable relative to the mounting frame 140, so as to facilitate cleaning or maintenance.

[0042] In combination with reference to Figures 1 to 7The liquid receiving part 130 may include a bottom plate 131. A through hole 121 may be provided on the bottom plate 131. An extension portion 132 extends around the through hole 121 in a direction perpendicular to the bottom plate 131. The inner wall of the extension portion 132 and the through hole 121 together form a liquid outlet channel 120. The extension portion 132 separates the liquid receiving space 110 from the liquid outlet channel 120. In other words, the bottom plate 131 has an extension portion 132 extending around the through hole 121 in a direction away from the mounting frame 140. The extension portion 132 separates the liquid receiving space 110 from the liquid outlet channel 120, thereby preventing liquid dripping into the liquid receiving space 110 from flowing out through the liquid outlet channel 120, causing contamination of the sample in the liquid receiving container or contamination of the cup-dispensing device. In addition, the extension portion 132 also plays a certain guiding role when the dripping part 310 passes through the through hole 121.

[0043] Again, refer to Figures 2 to 7 The edge of the bottom plate 131 may be formed with a notch 122. Side panels 133 may extend along the edges of the notch 122 and the bottom plate 131. The side panels 133, the outer wall of the extension 132, and the bottom plate 131 may together form a liquid receiving space 110. In this way, the liquid receiving space 110 can effectively catch liquid dripping from the dripping member 310, preventing the liquid in the liquid receiving space 110 from flowing out.

[0044] Again, refer to Figures 2 to 7 , the mounting frame 140 may include a connecting portion 141 and a storage portion 142. The connecting portion 141 may be connected between the drive assembly 200 and the storage portion 142. The storage portion 142 may have a storage space 1421 facing the direction of the drive assembly 200. The liquid contact part 130 may be arranged in the storage space 1421. By placing the liquid contact part 130 in the storage space 1421 of the storage portion 142, the stability of the connection between the liquid contact part 130 and the storage portion 142 is enhanced, thereby avoiding the phenomenon of the liquid contact part 130 falling off during movement. Of course, in order to ensure the patency of the liquid outlet channel 120, a through hole 1423 may be provided on the bottom wall of the storage portion 142 corresponding to the through hole 121, and a notch 1422 may be provided on the edge of the storage portion 142 corresponding to the notch 122. Furthermore, the connecting portion 141 may extend reinforcing ribs along the edge to strengthen the strength of the connecting portion 141.

[0045] See Figures 2 to 6The driving assembly 200 may include a first motor 210 and a support rail 220. The support rail 220 may be connected to the liquid contact assembly 100. The first motor 210 may drive the liquid contact assembly 100 along the support rail 220 to different positions so that the liquid contact assembly 100 switches between the first state and the second state. A single power source may be used to control the liquid contact assembly 100 to different positions so that the liquid contact assembly 100 switches between the first state and the second state. Specifically, the first motor 210 may be a closed-loop stepping motor. The first motor 210 may be used to output the screw rod 230. The support rail 220 may include a sliding support portion 221 and a fixed support portion 222. The fixed support portion 222 may be connected to the first motor 210. The sliding support portion 221 may slide relative to the fixed support portion 222. The screw rod 230, the sliding support portion 221 and the connecting portion 141 can be connected in sequence, and the first motor 210 outputs the screw rod 230 so that the sliding support portion 221 drives the connecting portion 141 to slide relative to the fixed support portion 222. In this way, the liquid contact assembly 100 can move along the retraction or extension direction of the screw rod 230.

[0046] When there are two dripping members 310 , the liquid receiving assembly 100 can be moved to the first position, the second position, the third position, or the fourth position by moving along the retraction or extension direction of the lead screw 230 .

[0047] Further, see Figure 2 , the driving component 200 may also have an origin sensing structure 240. The origin sensing structure 240 may include an origin sensing sheet 241 and an origin sensor 242. The origin sensing sheet 241 and the origin sensor 242 are arranged correspondingly. The origin sensing sheet 241 can be arranged on the opposite surface of the connection surface between the sliding support part 221 and the connecting part 141 (that is, the side facing the first motor 210), and the origin sensor 242 can be arranged below the first motor 210. When the first motor 210 outputs the screw rod 230 to make the sliding support part 221 drive the connecting part 141 to slide relative to the fixed support part 222, the origin sensing sheet 241 moves with the sliding support part 221. When the screw rod 230 retracts to a certain extent, the origin sensing sheet 241 and the origin sensor 242 can contact, and the screw rod 230 stops retracting to avoid further retraction and damaging the driving component 200.

[0048] See Figure 1According to another aspect of the present application, a pipetting device is provided. The pipetting device can include a pipetting mechanism 30 and the drip-proof mechanism 10 as described above. The pipetting mechanism 30 can include a plurality of drip members 310, which are located above the liquid receiving assembly 100. The pipetting device has been described above and will not be repeated here. Since the drip-proof mechanism 10 as described above has the beneficial effects as described above, the pipetting device including the drip-proof mechanism 10 as described above also has the beneficial effects as described above, which will not be repeated here.

[0049] According to yet another aspect of the present application, a cup dividing apparatus is provided. The cup dividing apparatus can include an operation table (not shown in the figures) and the pipetting device as described above. The pipetting device can be disposed on the operation table. Since the pipetting device as described above has the beneficial effects as described above, the cup dividing apparatus including the pipetting device as described above also has the beneficial effects as described above, which will not be repeated here.

[0050] In the description of the present application, it should be understood that the orientation words such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "vertical", "horizontal", and "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner" and "outer" refer to the inner and outer of the contour of each component itself.

[0051] In order to facilitate description, regional relative terms such as "above", "above", "upper surface", "upper" and the like can be used here to describe the regional positional relationship of one or more components or features shown in the figure with other components or features. It should be understood that the regional relative terms not only include the orientation of the components described in the figure, but also include different orientations in use or operation. For example, if the components in the figure are inverted as a whole, the components "above" or "above" other components or features will include the case of "below" or "below" other components or structures. Therefore, the example term "above" can include both "above" and "below". In addition, these components or features can also be positioned at other different angles (for example, rotated by 90 degrees or other angles), and all these cases are intended to be included herein.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0054] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drip-proof mechanism, characterized in that: The liquid contact assembly comprises a liquid contact component and a driving component, wherein the liquid contact component receives liquid dripping from a plurality of dripping parts located above the liquid contact component, and the driving component is connected to the liquid contact component and drives the liquid contact component to different positions to switch the liquid contact component between a first state and a second state; When the liquid contacting assembly is in the first state, the projections of the multiple dripping parts onto the plane where the liquid contacting assembly is located are all located outside the liquid contacting assembly; when the liquid contacting assembly is in the second state, the projection of at least one of the multiple dripping parts onto the plane where the liquid contacting assembly is located is located inside the liquid contacting assembly.

2. The anti-drip mechanism according to claim 1, characterized in that: The liquid contact component has a liquid contact space and a liquid outlet channel; When the liquid contacting assembly is in the first state, the projections of the multiple dripping parts onto the plane where the liquid contacting assembly is located are all located outside the liquid contacting space; when the liquid contacting assembly is in the second state, the projections of some of the multiple dripping parts onto the plane where the liquid contacting assembly is located are located within the liquid contacting space, and the projections of the remaining multiple dripping parts onto the plane where the liquid contacting assembly is located are located within the liquid outlet channel, or the projections of the multiple dripping parts onto the plane where the liquid contacting assembly is located are all located within the liquid contacting space.

3. The anti-drip mechanism according to claim 2, characterized in that: The liquid contact component is provided with a through hole at least in the middle region of the liquid contact space, and the through hole forms the liquid outlet channel; and / or A notch is provided at the edge of the liquid contact component, and the notch forms the liquid outlet channel.

4. The anti-drip mechanism according to claim 2, characterized in that: The liquid contact assembly comprises a liquid contact part and a mounting frame, the mounting frame is connected to the driving assembly, the liquid contact part is connected to the mounting frame, and the liquid contact space is arranged on the liquid contact part.

5. The anti-drip mechanism according to claim 4, characterized in that: The liquid contact part includes a bottom plate, a through hole is provided on the bottom plate, an extension portion extends around the through hole in a direction perpendicular to the bottom plate, the inner wall of the extension portion and the through hole together form the liquid outlet channel, and the extension portion separates the liquid contact space and the liquid outlet channel.

6. The anti-drip mechanism according to claim 5, characterized in that: A notch is formed at the edge of the bottom plate, and a side plate extends along the edge of the notch and the edge of the bottom plate. The side plate, the outer wall of the extension portion and the bottom plate enclose the liquid contact space.

7. The anti-drip mechanism according to claim 4, characterized in that: The mounting frame includes a connecting portion and a placing portion, the connecting portion is connected between the driving assembly and the placing portion, the placing portion has a placing space arranged toward the driving assembly, and the liquid contact part is arranged in the placing space.

8. The anti-drip mechanism according to claim 1, characterized in that: The driving assembly includes a first motor and a supporting slide rail, the supporting slide rail is connected to the liquid contact assembly, and the first motor drives the liquid contact assembly to different positions along the supporting slide rail to switch the liquid contact assembly between the first state and the second state.

9. A pipetting device, characterized in that: It comprises a pipetting mechanism and the anti-drip mechanism according to any one of claims 1 to 8, wherein the pipetting mechanism comprises a plurality of dripping parts, and the plurality of dripping parts are located above the liquid contact component.

10. A cup-dispensing device, characterized in that: The device comprises an operating table and the pipetting device according to claim 9, wherein the pipetting device is arranged on the operating table.

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