Liquid feeding device

Abstract

The invention discloses a liquid feeding device which comprises an equipment body, a supporting body and at least one liquid feeding pipe. The supporting main body is arranged on the equipment main body, at least one liquid feeding hole is formed in the supporting main body, and the supporting main body provided with the liquid feeding hole can rotate; the supporting main body is provided with a plurality of liquid feeding holes, the liquid feeding pipes and the liquid feeding holes are in one-to-one correspondence, the liquid feeding pipes are contained in the liquid feeding holes, the liquid feeding pipes can push raw material liquid into a target container, and the supporting main body comprises a movable part and a fixed part. The liquid feeding pipe can be installed in the liquid feeding hole or taken out of the liquid feeding hole conveniently, whether the liquid feeding pipe is firmly installed in the liquid inlet or not can be observed clearly after the liquid feeding pipe is turned over, it is ensured that raw material liquid does not leak when being conveyed into the micro-fluidic chip box, the flow speed and the flow state of micro-fluid can be more conveniently and accurately controlled by controlling the temperature, and the liquid feeding pipe is convenient to use. And products with higher uniformity and better quality can be conveniently prepared.

Description

[0001] This invention is a divisional application filed on November 12, 2021, with application number 202111341304.0 and titled "A Reversible Liquid Delivery Device". Technical Field

[0002] This invention relates to the field of liquid delivery, and more particularly to a temperature-controlled liquid delivery device. Background Technology

[0003] Microfluidics is a technology that can precisely control fluids at the microscale, especially for micron and submicron structures. Currently, the fabrication of microfluidics involves delivering raw liquid to a microfluidic chip cartridge, and then preparing the desired microfluidic mixture through the microchannels within the microfluidic chip cartridge.

[0004] Because current microfluidic preparation devices are relatively simple, most still require manual delivery of raw material liquids. The liquid delivery tube is fixed at the inlet, and then the raw material liquid is delivered into the microfluidic chip box. How to seal and fix the liquid delivery tube to the inlet, and how to make it easy to remove or place the liquid delivery tube, will bring great convenience to microfluidic preparation, higher success rate, and better preparation of microfluidic mixtures.

[0005] Therefore, in view of the above-mentioned technical characteristics, this patent provides a new technical solution. Summary of the Invention

[0006] To address the technical problems existing in the prior art, this invention provides a cleverly designed, easy-to-operate, and convenient temperature-controlled liquid delivery device. After being flipped over, it allows for clear observation of whether the delivery tube is securely installed in the inlet, ensuring that no leakage occurs when the raw material liquid is delivered into the microfluidic chip cartridge. Temperature control allows for more convenient and precise control of the microfluidic flow rate and flow state, facilitating the preparation of products with higher uniformity and better quality. The specific technical solution is as follows: A liquid delivery device includes a main body, a support body, and at least one liquid delivery pipe; The support body is disposed on the main body of the equipment, and the support body is provided with at least one liquid delivery hole, and the support body with the liquid delivery hole is rotatable; The liquid delivery tube corresponds one-to-one with the liquid delivery hole, the liquid delivery tube is housed in the liquid delivery hole, and the liquid delivery tube can push the raw material liquid into the target container. The support body includes a movable part and a fixed part. The fixed part is fixedly disposed on the equipment body. The movable part is rotatably connected to the fixed part and can rotate around the fixed part. The moving part is provided with a first arc-shaped part, and the fixed part is provided with a second arc-shaped part. The first arc-shaped part and the second arc-shaped part together form a liquid delivery hole. The first arc-shaped portion includes an arc segment and a circular segment along the axial direction. The arc segment is located at the end of the liquid delivery hole away from the target container, and the second arc-shaped portion matches the arc segment. The arc angle of the arc segment ranges from 180° to 360°, and the arc segment can prevent the liquid delivery tube from loosening or falling out of the liquid delivery hole. The supporting body is provided with a heating structure, which can heat the liquid delivery hole; the liquid delivery hole is a heat-conducting liquid delivery hole, which can conduct heat to the raw material liquid in the liquid delivery pipe; the heating element only heats the liquid delivery hole part of the supporting body, and the other parts of the supporting body do not conduct heat to the liquid delivery hole part. It also includes a control system, which is communicatively connected to the heating structure and is capable of controlling the opening and closing of the heating structure, as well as the heating temperature and heating time.

[0007] Preferably, the support body with the liquid delivery hole can rotate and stop at any position.

[0008] Preferably, it also includes a device body, which has an opening and a receiving cavity, and a supporting body is placed inside the receiving cavity. The supporting body is rotatably connected to the opening of the device body. The support body is rotatably connected to the opening of the main body of the equipment.

[0009] Preferably, the support body is rotatably connected to the opening of the device body via a damping shaft or a universal damper.

[0010] Preferably, the moving part is rotatably connected to the fixed part via a damping shaft or a universal damper.

[0011] Preferably, the volume of the liquid delivery tube that can hold the raw material liquid ranges from 0.5ml to 20ml.

[0012] Preferably, the outer diameter of the delivery tubes with different volumes is different; It also includes a sleeve, which is a hollow tube open at both ends, and the liquid delivery tube is fastened to the liquid delivery hole through the sleeve.

[0013] Preferably, the inner diameters of the sleeves of different specifications are different, while the outer diameters of the sleeves of different specifications are the same, and the outer diameter of the sleeve is consistent with the inner diameter of the liquid delivery hole.

[0014] Preferably, the arc angle of the arc segment ranges from 180° to 270°.

[0015] Preferably, the support body is provided with a flip handle, which makes it easier to flip the moving part.

[0016] Preferably, a heating groove is provided on the side of the fixed part away from the moving part, and the heating element is fixedly disposed in the heating groove. The heating element only heats the second arc-shaped part on the fixed part, and the other parts of the fixed part and the moving part are not heated. They are heat-insulated from the second arc-shaped part on the fixed part.

[0017] Compared with the prior art, the liquid delivery device described in this patent has at least one or more of the following beneficial effects: This patent features a support body for the liquid delivery hole that can be flipped, which greatly facilitates the installation of the liquid delivery tube into or out of the liquid delivery hole. After flipping, it is easy to see whether the liquid delivery tube is securely installed in the liquid inlet, ensuring that no leakage occurs when the raw material liquid is delivered into the microfluidic chip box, thus ensuring stable product preparation.

[0018] The liquid delivery device described in this patent allows the liquid delivery hole to rotate by the support body rotating around the main body of the equipment, or by the support body having a fixed part and a movable part rotating, which facilitates the removal and placement of the liquid delivery tube. The rotating part is preferably a damping shaft or a universal damper, which can flip the liquid delivery hole to any position as needed, making operation very convenient and greatly improving the user experience.

[0019] The support body is provided with a first arc-shaped part and a second arc-shaped part. The second arc-shaped part is rotatable, which facilitates the placement and removal of the liquid delivery tube. The second arc-shaped part has a circular section for firmly fixing the liquid delivery tube and an arc-shaped section with an included angle greater than 180°, so that the arc-shaped section can also firmly lock the liquid delivery tube and / or the sleeve, preventing it from loosening or falling off. This achieves the purpose of both facilitating the removal and placement of the liquid delivery tube and firmly locking the liquid delivery tube.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded structural diagram of one embodiment of the reversible liquid delivery device described in this patent; Figure 2 This is a three-dimensional structural schematic diagram of one embodiment of the flip-over liquid delivery device described in this patent; Figure 3 yes Figure 1 A three-dimensional structural diagram of the main supporting structure; Figure 4 yes Figure 1 A schematic diagram of the main supporting structure in the middle; Figure 5 This is a three-dimensional structural diagram of another embodiment of the flip-over liquid delivery device described in this patent; Figure 6 yes Figure 5 A three-dimensional structural diagram of the main support structure and the sleeve from one perspective; Figure 7 yes Figure 5 A three-dimensional structural diagram of the main support structure and the sleeve from another perspective; Figure 8 yes Figure 7 A schematic diagram of the AA-direction cross-section; Figure 9 yes Figure 5 A three-dimensional structural diagram of the central support body, microfluidic chip box, and liquid receiving tube in their flipped state; Figure 10 yes Figure 9 A schematic diagram of the cross-section along direction B; Figure 11 This is an exploded structural diagram of the liquid receiving pipe described in this patent; Figure 12 This is a three-dimensional structural diagram of the liquid receiving tube described in this patent; Figure 13 This is a three-dimensional structural schematic diagram of the sleeve described in this patent from one perspective; Figure 14 This is a three-dimensional structural schematic diagram of the sleeve described in this patent from another perspective.

[0023] Among them, 1-equipment body, 11-opening, 12-accommodating cavity, 13-supporting body, 133-rotating hole, 134-limiting wing, 135-heating tank, 137-flip handle, 17-equipment accommodating hole, 2-microfluidic chip box, 212-liquid inlet, 31-liquid delivery tube, 32-liquid delivery hole, 33-tube 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 segment, 3212-circular segment, 3213-limiting ring groove, 331-limiting ring, 3311-arc-shaped groove. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "one end," "one side," and "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "provided with", "equipped with", "connected", "provided with", "fixed", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to two elements. The specific meaning of the above terms in this invention should be understood according to the specific circumstances.

[0027] Example This embodiment of a liquid delivery device is mainly applied to microfluidic equipment. It is used to deliver raw material liquids to the microfluidic chip cassette of the microfluidic equipment according to a certain ratio, quantity, or other control requirements to obtain a microfluidic mixture. The support body with the liquid delivery hole has a flipping function, which can easily install the liquid delivery tube into or remove it from the liquid delivery hole, making it very convenient to use and operate. The microfluidic equipment includes a device body 1, which includes an opening and a receiving cavity. The receiving cavity is provided with a support body 13, which is connected to the opening 11 of the device body 1. The support body 13 has a cassette groove, and the microfluidic chip cassette 2 is snapped into the cassette groove. A flippable liquid delivery device is provided below the liquid inlet 212 of the microfluidic chip cassette 2, and a liquid receiving device is provided below the liquid outlet of the microfluidic chip cassette 2.

[0028] The following example, applied to microfluidic devices, illustrates the technical solution of the liquid delivery device: Please see Figure 1-14 ,like Figure 1-14As shown, the liquid delivery device includes a support body 13 and at least one liquid delivery pipe 31; The support body 13 has at least one liquid delivery hole 32, located below the liquid inlet 212 of the microfluidic chip cassette 2. The liquid delivery hole 32 is connected to the cassette groove, and its axial direction is perpendicular to the axial direction of the cassette groove. The support body 13 with the liquid delivery hole 32 is rotatable, and one end of the liquid delivery hole 32 faces the liquid inlet. In this example, there are two liquid delivery holes 32. Of course, the liquid delivery hole 32 can include, but is not limited to, two. Depending on user needs, experimental requirements, or production needs, one or more holes can be provided. In this example, a limiting annular groove 3213 is provided at the end of the liquid delivery hole 32 furthest from the liquid inlet 212. The liquid delivery hole 32 can be designed as an integral part, such as... Figure 1-4 As shown, the liquid delivery port 32 can also be designed as a separate unit, such as... Figure 5-10 As shown.

[0029] Preferably, the support body 13 is provided with a heating structure, which can heat the liquid delivery hole 32; in the example, the liquid delivery hole 32 is a heat-conducting liquid delivery hole, which can conduct heat to the raw material liquid in the liquid delivery pipe 31. Preferably, the heating element is only added to the liquid delivery hole 32 part of the support body 13, and the other parts of the support body 13 do not conduct heat to the liquid delivery hole 32 part, that is, they are heat-insulated.

[0030] It also includes a control system, which is communicatively connected to the heating structure. The control system can control the opening and closing of the heating structure, as well as the heating temperature and heating time. In this example, the heating structure is a heating element, which is fixed to the side of the support body 13 near the liquid delivery hole 32. The heating structure allows for the heating of the raw material liquid. As needed, the heating temperature, heating time, and other conditions can be set, broadening the experimental conditions and providing more preparation options for the product.

[0031] In a preferred embodiment, the support body 13 is further provided with a temperature sensor, which can detect the temperature of the liquid delivery hole 32; the temperature sensor is communicatively connected to the control system, and the control system can receive the temperature of the liquid delivery hole 32 detected by the temperature sensor to accurately control the heating temperature and improve the accuracy of experiments or product preparation.

[0032] The liquid delivery tube 31 is housed within the liquid delivery hole 32, and each liquid delivery tube 31 corresponds to a liquid inlet. The liquid delivery tube 31 includes a solution cylinder 311 and a push-pull rod 312. Figure 10-11As shown, the solution cylinder 311 has a solution cavity 3111 open at both ends, which can contain the raw material liquid. The push-pull rod 312 can move within the solution cavity 3111. The push-pull rod 312 extends into and is accommodated within the solution cavity 3111 from one end. A hollow liquid delivery head 3112 is provided at the end of the solution cylinder 311 away from 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. The push-pull rod 312 can push the raw material liquid sequentially through the liquid delivery head 3112 and the liquid inlet into the microfluidic chip cassette. 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 cassette. In the example, a sealing gasket is also provided at the end of the push-pull rod 312 near the liquid delivery head 3112. The sealing gasket can seal the raw material liquid within the solution cavity 3111. The sealing gasket is preferably a rubber gasket, but other elastic sealing gaskets can also be used.

[0033] In one example, such as Figure 1-4 As shown, the liquid delivery hole 32 is an integral design. The support body 13 is rotatably connected to the device body 1. The support body 13 can rotate or flip around the device body 1. In one example, the support body 13 is rotatably connected to the device body 1 via a rotating shaft. The rotating shaft is preferably a damped rotating shaft, but it can also be a non-damped rotating shaft. The sidewalls of the support body 13 have symmetrically arranged rotating holes 133. The device body 1 has a device receiving hole 17. One end of the rotating shaft is fixedly housed in the rotating hole 133, and the other end is fixedly housed in the device receiving hole 17. In another example, the support body 13 is rotatably connected to the device body 1 via a universal damper. This universal damper allows for more flexible rotation, more diverse rotation angles and directions, and greater ease of use. The support body is designed to flip, facilitating the removal or placement of the liquid delivery tube 31 from or into the liquid delivery hole 32. In the example, a limiting wing 134 is provided on the side of the support body 13 away from the liquid delivery hole 32. The limiting wing 134 abuts against the device body 1. The limiting wing 134 enables the support body 13 to be placed against the opening of the device body 1. The heating element is fixed to the side of the support body 13 near the liquid delivery hole 32.

[0034] In another embodiment, such as Figure 5-10As shown, the liquid delivery hole 32 is a split design. The supporting body 13 includes a movable part 301 and a fixed part 302. The movable part 301 is rotatably connected to the fixed part 302. The movable part 301 can rotate around the fixed part 302. The movable 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 together form the liquid delivery hole 32. In this example, the movable part 301 is rotatably connected to the fixed part 302 via a rotating shaft 34, particularly a damped rotating shaft or a universal damper. Of course, a non-damped rotating shaft or other rotating components can also be used for connection. Any component that can enable the movable part 301 to rotate is within the scope of protection of this patent. In the example, the first arc-shaped portion 321 includes an arc-shaped segment 3211 and a circular segment 3212 along the axial direction. The arc-shaped segment 3211 is located at the end of the liquid delivery hole 32 away from the microfluidic chip cassette 2, and the second arc-shaped portion 322 matches the arc-shaped segment 3211. Preferably, the arc angle of the arc segment 3211 is in the range of 180°-360°, and the arc segment 3211 can prevent the liquid delivery tube 31 from loosening or falling out of the liquid delivery hole 32. Preferably, the arc angle of the arc segment 3211 is in the range of 180°-270°. Setting the arc angle range allows the liquid delivery hole 32 to both hold the liquid delivery tube 31 and facilitate the removal and placement of the liquid delivery tube 31. In the example, the fixed part is in a vertical fixed state. When the moving part 301 is flipped to a near-horizontal state, it is convenient to place or remove the liquid delivery tube 31. After the liquid delivery tube 31 is placed, the moving part 301 moves to abut against the fixed part 302. At this time, the first arc-shaped part 321 and the second arc-shaped part 322 surround and form a complete liquid delivery hole 32. Then, the liquid delivery tube 31 can be pressed automatically or manually to deliver the raw material liquid to the inlet according to the needs or requirements of the experiment. In the example, the support body 1 is provided with a flip handle 137, which makes it easier to flip the moving part 301. The fixed part 302 has a heating groove 135 on the side away from the moving part 301, and the heating element is fixedly installed in the heating groove 135. Preferably, the heating element only heats the second arc-shaped part 322 on the fixed part 302. 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.

[0035] The support body with the liquid delivery hole can be flipped up, which makes it easier to install and remove the liquid delivery pipe, making the equipment easier to operate.

[0036] Preferably, it also includes a sleeve 33, such as Figure 6 and Figure 13-14As shown, the sleeve 33 is a hollow tube open at both ends. The liquid delivery tube 31 is fastened to the liquid delivery hole 32 through the sleeve 33. A limiting ring 331 is fitted on one end of the sleeve 33. The sleeve 33 is housed in the liquid delivery hole 32, and the limiting ring 331 abuts against the opening of the liquid delivery hole 32. The outer diameter of the sleeve 33 is the same as the inner diameter of the liquid delivery hole 32, and the inner diameter of the sleeve 33 is the same as the outer diameter of the liquid delivery tube 31. The length of the sleeve 33 is not greater than the length of the liquid delivery hole 32. In this example, the volume range of the liquid delivery tube 31 that can hold the raw material liquid is including but not limited to 0.5ml-20ml. The outer diameters of the liquid delivery tubes 31 with different volumes are different, so the liquid delivery tubes 31 with different volumes are equipped with matching sleeves 33. The inner diameters of the sleeves 33 with different specifications are different, but the outer diameters of the sleeves 33 with different specifications are the same. The outer diameter of the sleeve 33 is the same as the inner diameter of the liquid delivery hole 32. Preferably, the inner diameters of the delivery tubes 31 with different volumes are also different. The volume of the raw material liquid contained in the delivery tubes 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 matches the limiting ring grooves 3213, and the limiting ring 331 is housed within the limiting ring grooves 3213. The arc-shaped grooves 3311 are aesthetically pleasing and facilitate the removal and placement of the delivery tubes 31. Figure 1-4 As shown, the liquid delivery hole 32 is designed as an integral unit. The side wall of the limiting ring groove 3213 has a handle groove. The tube sleeve 33 is snapped into the liquid delivery hole 32. The limiting ring 331 is housed in the limiting ring groove 3213. The handle groove facilitates the removal of the tube sleeve 33 from the handle groove, making operation convenient.

[0037] The advantages of the rotatable liquid delivery device described in this patent are: (1) The flip-out liquid delivery device described in this patent has a support body with a liquid delivery hole that can be flipped, which greatly facilitates the installation of the liquid delivery tube in the liquid delivery hole or its removal from the liquid delivery hole. After flipping, it is possible to clearly observe whether the liquid delivery tube is firmly installed in the liquid inlet, ensuring that no leakage occurs when the raw material liquid is delivered into the microfluidic chip box, and ensuring stable product preparation.

[0038] (2) The flip-out liquid delivery device described in this patent can rotate the liquid delivery hole by rotating the support body around the main body of the equipment, or by rotating the support body with a fixed part and a movable part, so as to facilitate the removal and placement of the liquid delivery tube. The rotating part is preferably a damping shaft or a universal damper, which can flip the liquid delivery hole to any position as needed, making the operation very convenient and greatly improving the user experience.

[0039] (3) The flip-out liquid delivery device described in this patent is provided with a first arc-shaped part and a second arc-shaped part. The second arc-shaped part is rotatable, which facilitates the placement and removal of the liquid delivery tube. The second arc-shaped part has a circular section for firmly fixing the liquid delivery tube and an arc-shaped section with an arc angle greater than 180°, so that the arc-shaped section can also firmly lock the liquid delivery tube and / or the sleeve to prevent it from loosening or falling off, thus achieving the purpose of both facilitating the removal and placement of the liquid delivery tube and firmly locking the liquid delivery tube.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A liquid delivery device, characterized in that, Includes the main body of the equipment (1), the supporting body (13), the control system, and at least one liquid delivery pipe (31): The support body (13) is disposed on the device body (1), and at least one liquid delivery hole (32) is provided on the support body (13). The support body (13) with the liquid delivery hole (32) is rotatable. The liquid delivery tube (31) corresponds one-to-one with the liquid delivery hole (32). The liquid delivery tube (31) is housed in the liquid delivery hole (32). The liquid delivery tube (31) can push the raw material liquid into the target container. The supporting body (13) includes a movable part (301) and a fixed part (302). The fixed part (302) is fixedly disposed on the main body of the equipment. The movable part (301) is rotatably connected to the fixed part (302). The movable 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) together form a liquid delivery hole (32). The first arc-shaped portion (321) includes an arc-shaped segment (3211) and a circular segment (3212) along the axial direction. The arc-shaped segment (3211) is located at the end of the liquid delivery hole (32) away from the target container. The second arc-shaped portion (322) matches the arc-shaped segment (3211). The arc angle of the arc segment (3211) is in the range of 180°-360°, and the arc segment (3211) can prevent the liquid delivery tube (31) from loosening or falling out of the liquid delivery hole (32); The supporting body (13) is provided with a heating structure, which can heat the liquid delivery hole (32); the liquid delivery hole (32) is a heat-conducting liquid delivery hole, which can conduct heat to the raw material liquid in the liquid delivery pipe (31). The heating element only adds heat to the liquid delivery hole (32) part of the supporting body (13), and the other parts of the supporting body (13) do not conduct heat to the liquid delivery hole (32) part; The control system is communicatively connected to the heating structure, and the control system can control the opening and closing of the heating structure, the heating temperature, and the heating time.

2. The liquid delivery device according to claim 1, characterized in that, The support body (13) with liquid delivery hole (32) can rotate and stop at any position.

3. The liquid delivery device according to claim 1, characterized in that, The main body (1) of the device is provided with an opening (11) and a receiving cavity (12). The receiving cavity (12) contains a supporting body (13), which is rotatably connected to the opening (11) of the main body (1).

4. The liquid delivery device according to claim 3, characterized in that, The support body (13) is rotatably connected to the opening (11) of the equipment body (1) via a damping shaft or a universal damper.

5. The liquid delivery device according to claim 1, characterized in that, The moving part (301) is rotatably connected to the fixed part (302) via a damping shaft or a universal damper.

6. The liquid delivery device according to claim 1, characterized in that, The liquid delivery tube (31) has a volume range of 0.5ml-20ml for holding the raw material liquid.

7. The liquid delivery device according to claim 6, characterized in that, The outer diameter of the delivery tube (31) varies depending on its volume; It also includes a sleeve (33), which is a hollow tube with openings at both ends, and the liquid delivery tube (31) is fastened to the liquid delivery hole (32) through the sleeve (33).

8. The liquid delivery device according to claim 7, characterized in that, The inner diameters of the sleeves (33) of different specifications are different, but the outer diameters of the sleeves (33) of different specifications are the same. The outer diameter of the sleeves (33) is consistent with the inner diameter of the liquid delivery hole (32).

9. The liquid delivery device according to claim 1, characterized in that, The arc angle of the arc segment (3211) ranges from 180° to 270°.

10. The liquid delivery device according to claim 1, characterized in that, The support body (1) is provided with a flip handle (137), which makes it easier to flip the moving part (301); and / or A heating groove (135) is provided on the side of the fixed part (302) away from the moving part (301). The heating element is fixedly installed in the heating groove (135). The heating element only heats the second arc-shaped part (322) on the fixed part (302). The other parts of the fixed part (302) and the moving part (301) are not heated. They are heat-insulated from the second arc-shaped part (322) on the fixed part (302).

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