A reversible liquid delivery device

Abstract

The application discloses a reversible liquid feeding device, which comprises a device main body, a supporting main body and at least one liquid feeding pipe. The supporting main body is arranged on the device main body, and at least one liquid feeding hole is arranged on the supporting main body. The supporting main body provided with the liquid feeding hole can rotate. The liquid feeding pipe corresponds to the liquid feeding hole one by one, and the liquid feeding pipe is contained in the liquid feeding hole. The liquid feeding pipe can push raw material liquid into a target container. The supporting main body provided with the liquid feeding hole can be reversed, which greatly facilitates the installation and removal of the liquid feeding pipe in the liquid feeding hole. After the reversal, it can be clearly observed whether the liquid feeding pipe is firmly installed in the liquid inlet, so that the leakage of the raw material liquid during the conveying into the micro-fluidic chip box is avoided, and the stable preparation of the product is ensured. The rotating part is preferably a damping shaft or a universal damper, which can make the liquid feeding hole reverse at any position according to the requirement, and the operation is very convenient, and the user experience is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of liquid delivery, in particular to a reversible liquid delivery device. BACKGROUND

[0002] Microfluidic is a technology that can accurately control microscale fluid, especially for micron and submicron structure, and at present, the preparation of microfluidic is to deliver raw liquid to a microfluidic chip box, and to prepare the required microfluidic mixed liquid through the microfluidic channel in the microfluidic chip box.

[0003] Because the current microfluidic preparation device is relatively simple, most of them still need to manually deliver raw liquid, fix the liquid delivery pipe at the liquid inlet, and then deliver the raw liquid into the microfluidic chip box. How to seal and fix the liquid delivery pipe with the liquid inlet, and how to conveniently take out or place the liquid delivery pipe, if this problem is solved, it will bring great convenience, higher success rate and better microfluidic mixed liquid to the preparation of microfluidic.

[0004] Therefore, in view of the above technical characteristics, the present application provides a new technical scheme. SUMMARY

[0005] To solve the technical problems existing in the prior art, the present application provides a reversible liquid delivery device which is ingenious in design, easy to operate and use, and the specific technical scheme is as follows:

[0006] A reversible liquid delivery device, comprising a device main body, a support main body and at least one liquid delivery pipe;

[0007] The support main body is arranged on the device main body, and at least one liquid delivery hole is formed in the support main body. The support main body provided with the liquid delivery hole can rotate.

[0008] The liquid delivery pipe corresponds to the liquid delivery hole one by one, the liquid delivery pipe is accommodated in the liquid delivery hole, and the liquid delivery pipe can push the raw liquid into the target container.

[0009] As a preferred scheme of the reversible liquid delivery device described in the present application, the support main body provided with the liquid delivery hole can rotate and stop at any position.

[0010] As a preferred scheme of the reversible liquid delivery device described in the present application, the support main body comprises a moving part and a fixed part, the fixed part is fixedly arranged on the device main body, the moving part is rotatably connected with the fixed part, and the moving part can rotate around the fixed part.

[0011] The moving part is provided with a first arc-shaped part, the fixed part is provided with a second arc-shaped part, and the first arc-shaped part and the second arc-shaped part form a liquid delivery hole.

[0012] As a preferred solution of the reversible liquid delivery device described in the patent, the first arc-shaped part comprises an arc-shaped segment and a circular segment along the axial direction, the arc-shaped segment is located at one end of the liquid delivery hole away from the target container, and the second arc-shaped part matches the arc-shaped segment.

[0013] As a preferred solution of the reversible liquid delivery device described in the patent, a device body is further included, which is provided with an opening and a receiving cavity, and a support body is arranged in the receiving cavity and rotationally connected to the opening of the device body.

[0014] The support body is rotationally connected to the opening of the device body.

[0015] As a preferred solution of the reversible liquid delivery device described in the patent, the support body is rotationally connected to the opening of the device body through a damping rotary shaft or a universal damper.

[0016] As a preferred solution of the reversible liquid delivery device described in the patent, the arc angle of the arc-shaped segment ranges from 180° to 360°, and the arc-shaped segment can prevent the liquid delivery tube from loosening or falling out of the liquid delivery hole.

[0017] As a preferred solution of the reversible liquid delivery device described in the patent, the moving part is rotationally connected to the fixed part through a damping rotary shaft or a universal damper.

[0018] As a preferred solution of the reversible liquid delivery device described in the patent, the volume of the liquid delivery tube containing the raw material liquid ranges from 0.5ml to 20ml.

[0019] As a preferred solution of the reversible liquid delivery device described in the patent, the outer diameters of the liquid delivery tubes with different volumes are different.

[0020] A tube sleeve is further included, which is a hollow tube with open ends, and the liquid delivery tube is buckled in the liquid delivery hole through the tube sleeve.

[0021] Compared with the prior art, the reversible liquid delivery device described in the patent has at least one or more of the following beneficial effects:

[0022] (1) The support body of the liquid delivery hole of the reversible liquid delivery device described in the patent can be reversed, which greatly facilitates the installation or removal of the liquid delivery tube in the liquid delivery hole, and after the reversal, it can be clearly observed whether the liquid delivery tube is firmly installed in the liquid inlet, ensuring that the raw material liquid is not leaked when delivered into the microfluidic chip box, and ensuring stable product preparation.

[0023] (2) The reversible liquid feeding device described in the patent can rotate the liquid feeding hole by rotating the support body around the device body, or rotating the support body by setting a fixed part and a moving part, so as to facilitate the taking out and placing of the liquid feeding pipe. The rotating part is preferably a damping rotating shaft or a universal damper, which can rotate the liquid feeding hole to any position as needed, and the operation is very convenient, greatly improving the user experience.

[0024] (3) The reversible liquid feeding device described in the patent is provided with a first arc-shaped part and a second arc-shaped part, the second arc-shaped part can rotate, facilitating the placing and taking out of the liquid feeding pipe, and the second arc-shaped part has a circular segment for firmly fixing the liquid feeding pipe and an arc-shaped segment with an arc-shaped included angle greater than 180°, so that the arc-shaped segment can also firmly buckle the liquid feeding pipe and / or a clamping sleeve, preventing it from loosening or falling off, achieving the purpose of conveniently taking out and placing the liquid feeding pipe and firmly buckling the liquid feeding pipe.

[0025] Additional aspects and advantages of the application will be described in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description or will be learned from practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 is an exploded structural schematic diagram of an embodiment of the reversible liquid feeding device described in the patent;

[0028] Figure 2 is a three-dimensional structural schematic diagram of an embodiment of the reversible liquid feeding device described in the patent;

[0029] Figure 3 is Figure 1 a three-dimensional structural schematic diagram of the support body in the;

[0030] Figure 4 is Figure 1 a front view structural schematic diagram of the support body in the;

[0031] Figure 5 is a three-dimensional structural schematic diagram of another embodiment of the reversible liquid feeding device described in the patent;

[0032] Figure 6 is Figure 5 a three-dimensional structural schematic diagram of the support body and the pipe sleeve from one perspective;

[0033] Figure 7 isFigure 5 perspective view of another view of the support main body and the pipe sleeve;

[0034] Figure 8 is Figure 7 perspective view of A-A section of the support main body and the pipe sleeve;

[0035] Figure 9 is Figure 5 perspective view of the support main body, the microfluidic chip box and the liquid receiving pipe in the flipped state;

[0036] Figure 10 is Figure 9 perspective view of B section of the support main body and the pipe sleeve;

[0037] Figure 11 is an exploded structural schematic view of the liquid receiving pipe described in the patent;

[0038] Figure 12 is a perspective structural schematic view of the liquid receiving pipe described in the patent;

[0039] Figure 13 is a perspective structural schematic view of the pipe sleeve described in the patent from one view;

[0040] Figure 14 is a perspective structural schematic view of the pipe sleeve described in the patent from another view. Wherein, 1 - device main body, 11 - opening, 12 - containing cavity, 13 - support main body, 133 - rotating hole, 134 - limiting wing, 135 - heating groove, 137 - flipping handle, 17 - device containing hole, 2 - microfluidic chip box, 212 - liquid inlet, 31 - liquid delivery pipe, 32 - liquid delivery hole, 33 - pipe sleeve, 34 - rotating shaft, 301 - moving part, 302 - fixed part, 311 - solution cylinder, 3111 - solution cavity, 3112 - liquid delivery head, 312 - push-pull rod, 321 - first arc-shaped part, 322 - second arc-shaped part, 3211 - arc-shaped section, 3212 - circular section, 3213 - limiting ring groove, 331 - limiting ring, 3311 - arc-shaped groove. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "one end", "one side", "the other side" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0043] In the description of the present application, unless otherwise explicitly specified and limited, the terms "provided with", "provided with", "connected", "provided with", "fixed" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be two elements according to the specific circumstances. The specific meaning of the above terms in the present application is understood.

[0044] Embodiment

[0045] The reversible liquid feeding device of the present embodiment is mainly applied to a microfluidic device, and is used to feed raw liquid into a microfluidic chip box of the microfluidic device according to certain proportion, quantity or other control requirements, etc. to prepare a microfluidic mixed liquid. The support main body provided with a liquid feeding hole has a turnover function, which can facilitate the installation and removal of the liquid feeding pipe in the liquid feeding hole, and is very convenient to use and operate. The microfluidic device comprises a device main body 1, the device main body 1 comprises an opening and a containing cavity, the containing cavity is provided with a support main body 13, the support main body 13 is connected to the opening 11 of the device main body 1, the support main body 13 is provided with a box groove, a microfluidic chip box 2 is buckled in the box groove, a reversible liquid feeding device is arranged below the liquid inlet 212 of the microfluidic chip box 2, and a liquid receiving device is arranged below the liquid outlet of the microfluidic chip box 2.

[0046] The technical scheme of the reversible liquid feeding device will be described below by taking application in a microfluidic device as an example:

[0047] Please refer to Figures 1-14 As Figures 1-14 shown, the reversible liquid feeding device comprises a support main body 13 and at least one liquid feeding pipe 31;

[0048] The support body 13 is provided with at least one liquid feeding hole 32, which is located below the liquid inlet 212 of the microfluidic chip box 2, is in communication with the box groove, and has an axis perpendicular to the axis of the box groove. The support body 13 provided with the liquid feeding hole 32 can rotate, and one end of the liquid feeding hole 32 is open towards the liquid inlet. In the example, the liquid feeding hole 32 has two ends, but the number of liquid feeding holes 32 is not limited to two, and one or more liquid feeding holes 32 can be provided according to user needs, experimental needs or production needs. In the example, the liquid feeding hole 32 is provided with a limiting ring groove 3213 at the end away from the liquid inlet 212. The liquid feeding hole 32 can be designed integrally, as shown in Figures 1-4 or in parts, as shown in Figures 5-10 .

[0049] Preferably, the support body 13 is provided with a heating structure, which can heat the liquid feeding hole 32. In the example, the liquid feeding hole 32 is a heat-conducting liquid feeding hole, which can conduct heat to the raw material liquid in the liquid feeding pipe 31. Preferably, the heating sheet only heats the liquid feeding hole 32 of the support body 13, and the other parts of the support body 13 are not in heat conduction with the liquid feeding hole 32, i.e., are heat-insulated.

[0050] The control system is further provided, which is in communication with the heating structure and can control the opening, closing, heating temperature and heating time of the heating structure. In the example, the heating structure is a heating sheet, which is fixed to one side of the support body 13 close to the liquid feeding hole 32. The heating structure can heat the raw material liquid, and the heating temperature, heating time and other conditions can be set according to needs, which can broaden the experimental conditions and provide more preparation conditions for the product preparation method.

[0051] In the preferred embodiment, the support body 13 is further provided with a temperature sensor, which can detect the temperature of the liquid feeding hole 32. The temperature sensor is in communication with the control system, which can receive the temperature of the liquid feeding hole 32 detected by the temperature sensor, so as to accurately control the heating temperature and improve the accuracy of the experiment or product preparation.

[0052] The liquid feeding pipe 31 is accommodated in the liquid feeding hole 32, and the liquid feeding pipe 31 corresponds to the liquid inlet one by one. The liquid feeding pipe 31 includes a solution cylinder 311 and a push-pull rod 312, as shown in Figures 10-11As shown, the solution cylinder 311 has a solution cavity 3111 open at both ends, which can accommodate raw material liquid, the push-pull rod 312 can move in the solution cavity 3111, the push-pull rod 312 extends from one end of the solution cavity 3111 and is accommodated in the solution cavity 3111, the solution cylinder 311 is provided with a hollow liquid delivery head 3112 away from one end of the push-pull rod 312, the inner diameter of the liquid delivery head 3112 is smaller than the inner diameter of the solution cylinder 311, and the push-pull rod 312 can push the raw material liquid to enter the microfluidic chip box in sequence through the liquid delivery head 3112 and the liquid inlet. In the example, the outer diameter of the liquid delivery head is not greater than the inner diameter of the liquid inlet of the microfluidic chip box. In the example, the end of the push-pull rod 312 close to the liquid delivery head 3112 is also provided with a sealing gasket, which can seal the raw material liquid in the solution cavity 3111. The sealing gasket is preferably a rubber gasket, but can also be other elastic sealing gaskets.

[0053] In one example, as shown in Figures 1-4 As shown, the liquid delivery hole 32 is designed in one body, the support body 13 is rotationally connected to the equipment body 1, and the support body 13 can rotate or overturn around the equipment body 1. In one example, the support body 13 is rotationally connected to the equipment body 1 through a rotating shaft, which is preferably a damping rotating shaft, but can also be a non-damping rotating shaft. The side wall of the support body 13 is symmetrically provided with a rotating hole 133, and the equipment body 1 is provided with an equipment accommodating hole 17. One end of the rotating shaft is fixedly accommodated in the rotating hole 133, and the other end of the rotating shaft is fixedly accommodated in the equipment accommodating hole 17. In another example, the support body 13 is rotationally connected to the equipment body 1 through a universal damper, which has more flexible rotation, more diverse rotation angles and directions, and is more convenient to use. The support body can be overturned to facilitate the liquid delivery pipe 31 to be taken out of or placed in the liquid delivery hole 32. In the example, the side of the support body 13 away from the liquid delivery hole 32 is provided with a limiting wing 134, which abuts against the equipment body 1. The limiting wing 134 can make the support body 13 abut and be placed at the opening of the equipment body 1. The heating sheet is fixed to the side of the support body 13 close to the liquid delivery hole 32.

[0054] In another embodiment, as shown in Figures 5-10As shown, the liquid feeding hole 32 is designed in two parts, the support body 13 includes a moving part 301 and a fixed part 302, the moving part 301 is rotationally connected with the fixed part 302, the moving part 301 can rotate around the fixed part 302, the moving part 301 is provided with a first arc-shaped part 321, the fixed part 302 is provided with a second arc-shaped part 322, the first arc-shaped part 321 and the second arc-shaped part 322 jointly form the liquid feeding hole 32. In the example, the moving part 301 is rotationally connected with the fixed part 302 through a rotating shaft 34, in particular a damping rotating shaft or a universal damper, of course, a non-damping rotating shaft or other rotating components can also be used, as long as the components can realize the rotation of the moving part 301, they are all within the protection scope of the patent. In the example, the first arc-shaped part 321 includes an arc-shaped segment 3211 and a circular segment 3212 along the axial direction, the arc-shaped segment 3211 is located at one end of the liquid feeding hole 32 away from the microfluidic chip box 2, and the second arc-shaped part 322 matches the arc-shaped segment 3211. Preferably, the arc-shaped angle of the arc-shaped segment 3211 ranges from 180° to 360°, and the arc-shaped segment 3211 can prevent the liquid feeding tube 31 from loosening or falling off from the liquid feeding hole 32. Preferably, the arc-shaped angle of the arc-shaped segment 3211 ranges from 180° to 270°, and the arc-shaped angle is set so that the liquid feeding hole 32 can buckle the liquid feeding tube 31 and also facilitate the placement and removal of the liquid feeding tube 31. In the example, the fixed part is in a vertical fixed state, and the moving part 301 is flipped to a nearly horizontal state, which can facilitate the placement or removal of the liquid feeding tube 31. After the liquid feeding tube 31 is placed, the moving part 301 is moved to abut the fixed part 302, at this time, the first arc-shaped part 321 and the second arc-shaped part 322 jointly form a complete liquid feeding hole 32, then the liquid feeding tube 31 can be pressed automatically or manually, and the raw material liquid can be transported to the liquid inlet according to the needs or requirements of the experiment. In the example, the support body 1 is provided with a flipping handle 137, which can make the flipping of the moving part 301 more convenient; a heating groove 135 is formed on the side of the fixed part 302 away from the moving part 301, and a heating sheet is fixedly arranged in the heating groove 135. Preferably, the heating sheet only heats the second arc-shaped part 322 on the fixed part 302, and the other parts of the fixed part 302 and the moving part 301 are not heated, and they are heat-insulated from the second arc-shaped part 322 on the fixed part 302.

[0055] The support body provided with the liquid feeding hole can be flipped, which facilitates the installation and removal of the liquid feeding tube and makes the operation of the equipment more convenient.

[0056] Preferably, it further includes a tube sleeve 33, such as Figure 6 and Figures 13-14As shown, the sleeve 33 is a hollow tube with both ends open, the liquid delivery pipe 31 is buckled in the liquid delivery hole 32 through the sleeve 33, one end of the sleeve 33 outside is sleeved with a limiting ring 331, the sleeve 33 is accommodated in the liquid delivery hole 32, the limiting ring 331 abuts against the orifice of the liquid delivery hole 32, the outer diameter of the sleeve 33 is consistent with the inner diameter of the liquid delivery hole 32, the inner diameter of the sleeve 33 is consistent with the outer diameter of the liquid delivery pipe 31, and the length of the sleeve 33 is not greater than the length of the liquid delivery hole 32; in the example, the volume range of the raw material liquid contained by the liquid delivery pipe 31 includes but is not limited to 0.5ml-20ml; the outer diameters of the liquid delivery pipes 31 with different volumes are not the same, so the liquid delivery pipes 31 with different volume specifications are configured with the sleeves 33 matched therewith, the inner diameters of the sleeves 33 with different specifications are not the same, the outer diameters of the sleeves 33 with different specifications are the same, and the outer diameter of the sleeve 33 is consistent with the inner diameter of the liquid delivery hole 32. Preferably, the inner diameters of the liquid delivery pipes 31 with different volumes are also not the same, and the volume of the raw material liquid contained by the liquid delivery pipe 31 includes but is not limited to 0.5ml, 1ml, 2ml, 3ml, 5ml, 7ml, 8ml, 10ml, 12ml, 15ml, 18ml and 20ml. In the example, two inwardly recessed arc-shaped grooves 3311 are symmetrically formed on the limiting ring 331, the limiting ring 331 is matched with the limiting ring groove 3213, and the limiting ring 331 is accommodated in the limiting ring groove 3213. The arc-shaped grooves 3311 are arranged to be not only beautiful but also convenient for taking out and placing the liquid delivery pipe 31. Figures 1-4 As shown, the liquid delivery hole 32 is integrally designed, the sidewall of the limiting ring groove 3213 is provided with a handle groove, the sleeve 33 is buckled in the liquid delivery hole 32, the limiting ring 331 is accommodated in the limiting ring groove 3213, and the handle groove is arranged to facilitate taking out the sleeve 33 from the handle groove and facilitate operation.

[0057] The beneficial effects of the reversible liquid delivery device described in the patent are as follows:

[0058] (1) The reversible liquid delivery device described in the patent is provided with a support main body of the liquid delivery hole, which can be reversed to greatly facilitate the installation and removal of the liquid delivery pipe in and from the liquid delivery hole, and after being reversed, the liquid delivery pipe can be clearly observed to be firmly installed in the liquid inlet, thereby ensuring that the raw material liquid is not leaked when being delivered into the microfluidic chip box and ensuring the stable preparation of the product.

[0059] (2) The reversible liquid delivery device described in the patent can rotate the liquid delivery hole by rotating the support main body around the equipment main body or rotating the support main body by providing a fixed part and a moving part, so as to facilitate the taking out and placing of the liquid delivery pipe. The rotating part is preferably a damping rotating shaft or a universal damper, which can be reversed at any position as needed, and the operation is very convenient, thereby greatly improving the user experience.

[0060] (3) The reversible liquid feeding device described in the patent is provided with a first arc-shaped part and a second arc-shaped part, the second arc-shaped part is rotatable, facilitating the placement and taking out of the liquid feeding pipe, and the second arc-shaped part has a circular segment for firmly fixing the liquid feeding pipe and an arc-shaped segment with an arc-shaped angle greater than 180°, so that the arc-shaped segment can also firmly buckle the liquid feeding pipe and / or the clamping sleeve, preventing it from loosening or falling off, achieving the purpose of both facilitating the taking out and placing of the liquid feeding pipe and firmly buckling the liquid feeding pipe.

[0061] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and integrate different embodiments or examples described in the present specification.

[0062] Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications and variations to the above-described embodiments within the scope of the present application.

Claims

1. A reversible liquid delivery device, characterized by, The device comprises a device body (1), a supporting body (13) and at least one liquid feeding pipe (31): The supporting body (13) is arranged on the device body (1), and at least one liquid feeding hole (32) is arranged on the supporting body (13). The supporting body (13) provided with the liquid feeding hole (32) can rotate. The liquid feeding pipe (31) corresponds to the liquid feeding hole (32) one by one, and the liquid feeding pipe (31) is accommodated in the liquid feeding hole (32). The liquid feeding pipe (31) can push raw material liquid into a target container. The supporting body (13) comprises a moving part (301) and a fixed part (302). The fixed part (302) is fixedly arranged on the device body, and the moving part (301) is rotationally connected with the fixed part (302). The moving part (301) can rotate around the fixed part (302). The moving part (301) is provided with a first arc-shaped part (321), and the fixed part (302) is provided with a second arc-shaped part (322). The first arc-shaped part (321) and the second arc-shaped part (322) jointly form the liquid feeding hole (32). The first arc-shaped part (321) comprises an arc-shaped segment (3211) and a circular segment (3212) along the axial direction. The arc-shaped segment (3211) is located at one end of the liquid feeding hole (32) away from the target container. The second arc-shaped part (322) matches the arc-shaped segment (3211). The arc angle of the arc-shaped segment (3211) ranges from 180° to 360°. The arc-shaped segment (3211) can prevent the liquid feeding pipe (31) from loosening or falling off from the liquid feeding hole (32). The supporting body (13) is provided with a heating structure. The heating structure can heat the liquid feeding hole (32). The liquid feeding hole (32) is a heat-conducting liquid feeding hole. The liquid feeding hole can conduct heat to the raw material liquid in the liquid feeding pipe (31). The heating sheet only heats the liquid feeding hole (32) part of the supporting body (13). The other parts of the supporting body (13) do not conduct heat with the liquid feeding hole (32) part.

2. The reversible liquid delivery device of claim 1, wherein, The supporting body (13) provided with the liquid feeding hole (32) can rotate and stop at any position.

3. The reversible liquid delivery device of claim 1, wherein, The device body (1) is provided with an opening (11) and a containing cavity (12). The containing cavity (12) contains the supporting body (13). The supporting body (13) is rotationally connected at the opening (11) of the device body (1).

4. The reversible liquid delivery device of claim 3, wherein, The supporting body (13) is rotationally connected at the opening (11) of the device body (1) through a damping rotating shaft or a universal damper.

5. The reversible liquid delivery device of claim 1, wherein, The moving part (301) is rotationally connected with the fixed part (302) through a damping rotating shaft or a universal damper.

6. The reversible liquid delivery device of claim 1, wherein, The volume of the liquid feeding pipe (31) containing raw material liquid ranges from 0.5ml to 20ml.

7. The reversible liquid delivery device of claim 6, wherein, The outer diameters of the liquid feeding pipes (31) with different volumes are different. The device further comprises a pipe sleeve (33). The pipe sleeve (33) is a hollow pipe with two open ends. The liquid feeding pipe (31) is buckled in the liquid feeding hole (32) through the pipe sleeve (33).

Images