Cleaning unit of liquid taking needle and liquid taking device comprising cleaning unit

Abstract

The invention provides a cleaning unit of a liquid taking needle and a liquid taking device comprising the same. The cleaning unit comprises a cleaning cavity and a cleaning chamber formed in the cleaning cavity. Wherein the cleaning cavity is suitable for allowing the liquid taking needle to partially pass through to enter and / or leave the cleaning cavity, and is in sealed connection with the liquid taking needle when the liquid taking needle partially enters and / or leaves the cleaning cavity, so that a closed space is formed in the cleaning cavity, cleaning liquid is introduced into the closed space, and the liquid taking needle is cleaned through the cleaning liquid. The liquid taking needle can be fully cleaned in time under the condition that the liquid taking needle is not detached, operation is convenient, the structure is simple, and cost can be saved; meanwhile, cleaning liquid can be introduced into the cleaning cavity which can be sealed in the closed space, leakage of the cleaning liquid cannot be caused, and pollution or influence of the cleaning liquid on the whole liquid taking device can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of wine machines, and in particular to a cleaning unit for a liquid collection needle and a liquid collection device comprising the cleaning unit. Background Art

[0002] A wine dispenser is a device that allows users to extract wine without removing the cork. It allows for convenient wine enjoyment while preventing oxidation problems associated with uncorking the bottle, thereby preserving the wine's quality and taste over time. However, every time a wine dispenser is used, the dispenser needle comes into contact with the wine. If the needle is not cleaned promptly, residual wine can remain, leading to bacterial growth and cross-contamination. Summary of the Invention

[0003] The object of the present invention is to provide a cleaning unit for a liquid collection needle and a liquid collection device including the same. The cleaning unit includes a cleaning cavity and a cleaning chamber formed in the cleaning cavity. The cleaning cavity is suitable for allowing the liquid collection needle to partially pass through to enter and / or leave the cleaning chamber, and to be sealed and connected to the liquid collection needle when the liquid collection needle partially enters and / or leaves the cleaning chamber, so that the cleaning chamber forms a closed space, so that cleaning liquid can be introduced into the closed space and the liquid collection needle can be cleaned by the cleaning liquid. The present invention can clean the liquid collection needle in a timely and sufficient manner without disassembling the liquid collection needle. It is not only easy to operate but also simple in structure, which is conducive to cost saving. At the same time, the introduction of cleaning liquid into the clean chamber that can be sealed in a closed space will not cause leakage of the cleaning liquid, which can effectively avoid contamination or influence of the cleaning liquid on the entire liquid collection device.

[0004] To this end, the present invention provides the following technical solutions:

[0005] One aspect of the present invention is to provide a cleaning unit for a liquid collection needle. The cleaning unit includes a cleaning cavity and a cleaning chamber formed within the cleaning cavity; the cleaning cavity is adapted to allow the liquid collection needle to partially pass through to enter and / or exit the cleaning chamber, and to be sealedly connected to the liquid collection needle when the liquid collection needle partially enters and / or exits the cleaning chamber; the cleaning chamber is adapted to receive a cleaning fluid to clean the liquid collection needle with the cleaning fluid.

[0006] In some embodiments, the liquid collection needle includes a hollow liquid collection needle chamber and a liquid collection needle entry hole connected to the liquid collection needle chamber; the liquid collection needle entry hole is suitable for being exposed to the cleaning chamber when the liquid collection needle partially enters the cleaning chamber, so as to receive the cleaning liquid and clean the liquid collection needle chamber with the cleaning liquid.

[0007] In some embodiments, the cleaning chamber includes an inlet portion; the inlet portion is adapted to allow the liquid collection needle portion to pass through to enter the cleaning chamber, and when the liquid collection needle portion enters the cleaning chamber, the inlet portion tightly wraps the outer peripheral side of the liquid collection needle and is sealed with the liquid collection needle.

[0008] In some embodiments, the inlet portion is elastic and is adapted to be compressed and deformed to tightly wrap the outer peripheral side of the liquid extraction needle at least when the liquid extraction needle partially enters the cleaning chamber.

[0009] In some embodiments, the cleaning chamber further includes an outlet portion; the outlet portion is adapted to allow the liquid collection needle portion to partially pass through to leave the cleaning chamber; the outlet portion is elastic and adapted to seal when the liquid collection needle portion enters the cleaning chamber, and tightly wrap the outer peripheral side of the liquid collection needle when the liquid collection needle portion leaves the cleaning chamber and be sealedly connected to the liquid collection needle.

[0010] In some embodiments, the directions in which the liquid collection needle enters and leaves the cleaning chamber are consistent; the cleaning chamber is also suitable for serving as a needle entry channel for the liquid collection needle.

[0011] In some embodiments, the cleaning cavity is further adapted to form an air needle channel independent of the cleaning chamber; the air needle channel is arranged in parallel with the needle entry channel and is adapted to allow the inflation needle to enter and exit.

[0012] Another aspect of the present invention is to provide a liquid extraction device including the cleaning unit. The liquid extraction device is used to extract liquid from a container, wherein the container includes a container opening and a stopper disposed at the container opening; the liquid extraction needle is adapted to pierce the stopper and extract the liquid from the container.

[0013] In some embodiments, the liquid extraction device also includes a cleaning liquid pipeline, a cleaning liquid pump and a cleaning liquid tank connected to the cleaning chamber in sequence; the cleaning liquid tank is suitable for accommodating cleaning liquid; the cleaning liquid pump is suitable for transporting the cleaning liquid to the cleaning chamber through the cleaning liquid pipeline.

[0014] In some embodiments, the liquid collection device further includes a liquid outlet pipeline connected to the liquid collection needle; the liquid outlet pipeline is suitable for outputting the liquid extracted by the liquid collection needle or the cleaning liquid for cleaning the liquid collection needle.

[0015] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects.

[0016] For example, the cleaning unit provided by the present invention includes a cleaning cavity and a cleaning chamber formed in the cleaning cavity. The cleaning cavity is suitable for allowing a liquid collection needle to partially pass through to enter and / or leave the cleaning cavity, and is sealed and connected to the liquid collection needle when the liquid collection needle partially enters and / or leaves the cleaning cavity, so that the cleaning cavity forms a closed space, so that cleaning liquid can be introduced into the closed space and the liquid collection needle can be cleaned by the cleaning liquid. The present invention can timely and fully clean the liquid collection needle without disassembling the liquid collection needle, which is not only convenient to operate but also simple in structure, which is conducive to cost saving. At the same time, the introduction of cleaning liquid in the closed space will not cause leakage of the cleaning liquid, which can effectively avoid contamination or influence of the cleaning liquid on the entire liquid collection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic diagram of the interior of a liquid extraction device provided in an embodiment of the present invention;

[0018] Figure 2 Schematic diagram of the principle of the liquid collection device provided by an embodiment of the present invention, wherein the liquid collection needle is in the extraction state;

[0019] Figure 3 Schematic diagram of the principle of the liquid collection device provided by an embodiment of the present invention; wherein the liquid collection needle is in a state where its front end has just entered the cleaning chamber;

[0020] Figure 4 Schematic diagram of the principle of the liquid collection device provided by an embodiment of the present invention; wherein the liquid collection needle is in a cleanable state;

[0021] Figure 5 is a schematic diagram of a cleaning unit provided in an embodiment of the present invention;

[0022] Figure 6 Schematic diagram of a liquid collection needle provided in an embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 1. Liquid taking device;

[0025] 10 liquid collection needle, 11 liquid collection needle chamber, 12 liquid collection needle entrance hole, 13 peripheral side, 14 liquid collection needle exit hole;

[0026] 20 cleaning unit, 21 cleaning cavity, 22 cleaning chamber, 23 inlet, 24 outlet, 25 liquid outlet pipeline, 26 cleaning liquid pipeline, 27 cleaning liquid pump, 28 cleaning liquid tank, 29 air needle channel;

[0027] 30 container, 31 container mouth, 32 stopper;

[0028] 40 inflation needle, 41 inflation needle chamber;

[0029] 50 gas cylinders;

[0030] 60 driving mechanism. DETAILED DESCRIPTION

[0031] To make the objectives, features, and beneficial effects of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described below are intended only to illustrate the present invention and are not intended to limit the present invention. Furthermore, descriptions of identical or similar components between different embodiments, as well as descriptions of components, features, effects, and the like that are related to the prior art, may be omitted.

[0032] In addition, for the sake of ease of description, the drawings only show parts related to the present invention rather than all structures. In addition, the same or similar reference numerals may be used in the drawings to refer to the same or similar components in different embodiments.

[0033] Reference Figures 1 to 6 , an embodiment of the present invention provides a cleaning unit 20 for a liquid collection needle 10 and a liquid collection device 1 including the cleaning unit 20 .

[0034] Specifically, the liquid extraction device 1 is used to extract liquid from a container 30. The container 30 includes a container opening 31 and a stopper 32 disposed at the container opening 31. The liquid extraction needle 10 is suitable for piercing the stopper 32 and extracting the liquid from the container 30.

[0035] In some embodiments, the liquid extraction device 1 may include a wine machine and is suitable for extracting wine from a wine bottle through a liquid extraction needle 10 .

[0036] In some embodiments, the liquid extraction device 1 further includes an inflation needle 40 suitable for piercing the stopper 32 .

[0037] In a specific embodiment, the inflation needle 40 and the liquid withdrawal needle 10 respectively have a hollow inflation needle chamber 41 and a liquid withdrawal needle chamber 11. The inflation needle 40 is adapted to introduce gas into the container 30 through the inflation needle chamber 41 after piercing the stopper 32; the liquid withdrawal needle 10 is adapted to extract liquid from the container 30 through the liquid withdrawal needle chamber 11 after piercing the stopper 32.

[0038] Specifically, when gas is introduced into the container 30 through the inflation needle 40, the air pressure in the container 30 gradually increases. When the air pressure inside the container 30 is greater than the air pressure outside the container 30, the pressure difference between the inside and outside of the container 30 causes the liquid in the container 30 to flow out through the liquid collection needle chamber 11 of the liquid collection needle 10, thereby extracting the liquid in the container 30.

[0039] In some embodiments, the front end needle tips of the inflation needle 40 and the liquid collection needle 10 may be tapered to facilitate piercing the stopper 32 .

[0040] In some embodiments, the liquid extraction device 1 further includes a gas cylinder 50 suitable for containing gas and connected to the inflation needle 40 , so as to introduce gas into the container 30 through the inflation needle 40 .

[0041] In a specific implementation, a valve is provided between the gas cylinder 50 and the inflation needle 40 , and the gas flow between the gas cylinder 50 and the inflation needle 40 is controlled by opening and closing the valve.

[0042] In some embodiments, the liquid in the container 30 may oxidize and deteriorate. In this case, the gas in the gas cylinder 50 may be an inert gas. The inert gas introduced into the container 30 can prevent the liquid from oxidizing, which is beneficial for the liquid to maintain its original quality.

[0043] In some embodiments, the liquid in the container 30 may be wine, and the inert gas may be argon. Argon gas introduced into the container 30 can prevent oxidation of the wine, thereby helping to keep the wine fresh for a long time.

[0044] In some embodiments, the inflation needle 40 contains air, which contains oxygen. To prevent the inflation needle 40 from bringing the air into the container 30 when piercing the stopper 32, the gas cylinder 50 is further adapted to pass an inert gas into the inflation needle 40 to evacuate the air in the inflation needle 40 before the inflation needle 40 pierces the stopper 32.

[0045] In some embodiments, the liquid collection needle 10 contains air, which contains oxygen. To prevent the air from being brought into the container 30 when the liquid collection needle 10 pierces the stopper 32, a gas cylinder 50 is further adapted to be connected to the liquid collection needle 10 and to pass an inert gas into the liquid collection needle 10 to evacuate the air from the liquid collection needle 10 before the liquid collection needle 10 pierces the stopper 32.

[0046] In a specific implementation, a valve is also provided between the gas cylinder 50 and the liquid collection needle 10 , and the gas flow between the gas cylinder 50 and the liquid collection needle 10 is controlled by opening and closing the valve.

[0047] In some embodiments, when the liquid collection needle 10 pierces the stopper 32, the liquid collection needle chamber 11 is connected to the container 30 to facilitate liquid extraction. At the same time, the liquid collection needle chamber 11 is also connected to the liquid outlet pipe 25 to send the extracted liquid out.

[0048] In a specific implementation, the gas cylinder 50 can also be connected to the liquid collection needle 10 and the liquid outlet pipe 25 respectively, and is suitable for passing gas into the liquid outlet pipe 25 and / or the liquid collection needle 10 after the liquid extraction is completed, so as to blow out the residual liquid in the liquid outlet pipe 25 and / or the liquid collection needle 10. In this way, the liquid outlet pipe 25 and / or the liquid collection needle 10 can be cleaned.

[0049] In a specific implementation, a valve is also provided between the gas cylinder 50 and the liquid outlet pipeline 25 , and the gas flow between the gas cylinder 50 and the liquid outlet pipeline 25 is controlled by opening and closing the valve.

[0050] In some embodiments, the liquid collection device 1 further includes a driving mechanism 60 for driving the liquid collection needle 10 , the inflation needle 40 and the container 30 to move relatively close to each other so that the liquid collection needle 10 and the inflation needle 40 can pierce the stopper 32 of the container 30 .

[0051] In some embodiments, the container 30 may be kept stationary while the inflation needle 40 and the liquid extraction needle 10 are driven to move toward the container 30 .

[0052] In some embodiments, the liquid extraction needle 10 and the inflation needle 40 are adapted to be synchronously extracted and moved synchronously.

[0053] In some embodiments, the inflation needle 40 and the liquid withdrawal needle 10 may be kept stationary while the drive container 30 is moved toward the inflation needle 40 and the liquid withdrawal needle 10 .

[0054] In some embodiments, the drive mechanism 60 can be implemented using any known technical means in the art. For example, a motor combined with a lead screw and nut can be used for drive, wherein the motor is connected to the lead screw, which is connected to the lead screw nut, which is connected to the inflation needle 40, the liquid collection needle 10, or the container 30. The motor drives the lead screw to rotate, thereby driving the lead screw nut to move the inflation needle 40 or the liquid collection needle 10 toward the container 30, or drives the container 30 toward the inflation needle 40 or the liquid collection needle 10.

[0055] Since the liquid collection needle 10 contacts liquid every time it is used for extraction, if the liquid collection needle 10 is not cleaned promptly and thoroughly, liquid residue will remain, which may lead to bacterial growth and cause cross contamination. In order to clean the liquid collection needle 10 promptly, thoroughly and conveniently, an embodiment of the present invention further provides a cleaning unit 20.

[0056] Specifically, the cleaning unit 20 includes a cleaning cavity 21 and a cleaning chamber 22 formed within the cleaning cavity 21. The cleaning cavity 21 is adapted to allow the liquid collection needle 10 to partially pass through to enter and / or exit the cleaning cavity 22, and to be sealedly connected to the liquid collection needle 10 when the liquid collection needle 10 partially enters and / or exits the cleaning cavity 22, so that the cleaning cavity 22 forms a closed space; and the cleaning cavity 22 is adapted to receive a cleaning liquid to clean the liquid collection needle 10 within the closed space.

[0057] Typically, when extracting liquid, the front end of the liquid extraction needle 10 is adapted to pass through the stopper 32 and enter the container 30, thereby extracting the liquid from the container 30 through the liquid extraction needle chamber 11. Accordingly, the liquid extraction needle 10 also includes a liquid extraction needle inlet hole 12 connected to the liquid extraction needle chamber 11. The liquid extraction needle inlet hole 12 is adapted to be exposed to the container 30 when the front end of the liquid extraction needle 10 passes through the stopper 32 and enters the container 30, so as to receive the liquid to be extracted. In this case, both the front end of the liquid extraction needle 10 and the liquid extraction needle chamber 11 need to be cleaned promptly after liquid extraction.

[0058] In some embodiments, the front end of the liquid collection needle 10 is adapted to pass through the cleaning cavity 21 and enter the cleaning chamber 22. Accordingly, the liquid collection needle inlet hole 12 is provided at the front end of the liquid collection needle 10 so as to be exposed to the cleaning chamber 22 when the front end of the liquid collection needle 10 enters the cleaning chamber 22, thereby facilitating the cleaning liquid in the cleaning chamber 22 to enter the liquid collection needle chamber 11 through the liquid collection needle inlet hole 12 to clean the liquid collection needle chamber 11.

[0059] It is understandable that when the front end of the liquid collection needle 10 enters the cleaning chamber 22 , the front end of the liquid collection needle 10 can also be cleaned by the cleaning liquid in the cleaning chamber 22 .

[0060] In some embodiments, the cleaning chamber 21 includes an inlet 23. The inlet 23 is adapted to allow the liquid collection needle 10 to partially pass through to enter the cleaning chamber 22, and tightly wrap the outer peripheral side 13 of the liquid collection needle 10 when the liquid collection needle 10 partially enters the cleaning chamber 22 to be sealed with the liquid collection needle 10.

[0061] In some embodiments, the inlet portion 23 is elastic and adapted to be compressed and deformed to tightly wrap the outer circumference 13 of the liquid collection needle 10 and form a sealed connection with the outer circumference 13 of the liquid collection needle 10 at least when the liquid collection needle 10 partially enters the cleaning chamber 22 .

[0062] In a specific implementation, the inner diameter of the inlet portion 23 is smaller than the outer diameter of the liquid collection needle 20. When the liquid collection needle 10 passes through the inlet portion 23, the outer peripheral side 13 of the liquid collection needle 10 will abut against the inner periphery of the inlet portion 23, and the inlet portion 23 will produce a compression deformation in the radial direction to tightly wrap the outer peripheral side 13 of the liquid collection needle 10, thereby forming a sealed connection between the inner periphery of the inlet portion 23 and the outer peripheral side of the liquid collection needle 10.

[0063] In some embodiments, the inlet portion 23 may be made of elastic silicone material.

[0064] In some embodiments, the inlet portion 23 may also be made of any other elastic material known in the prior art, which is not limited here.

[0065] In some embodiments, the entire cleaning chamber 21 may also be made of any elastic material known in the prior art, which is not limited here.

[0066] When the liquid collection needle 10 passes through the inlet 23 of the cleaning cavity 21 and partially enters the cleaning cavity 22, the inlet 23 of the cleaning cavity 21 tightly wraps the outer peripheral side 13 of the liquid collection needle 10 and forms a sealed connection with the outer peripheral side 13 of the liquid collection needle 10, which will form a closed space in the cleaning cavity 22, thereby preventing the cleaning liquid in the cleaning cavity 22 from leaking.

[0067] As mentioned above, the liquid collection device 1 further includes a liquid outlet pipe 25 communicating with the liquid collection needle chamber 11 for discharging the liquid collected by the liquid collection needle 10 to the outside.

[0068] In some embodiments, the cleaning liquid used to clean the liquid collection needle 10 can also be discharged outward through the liquid outlet pipe 25. Specifically, the cleaning liquid can enter the liquid collection needle chamber 11 through the liquid collection needle inlet hole 12, and then be discharged outward through the liquid collection needle chamber 11 through the liquid outlet pipe 25.

[0069] In some embodiments, the liquid collection needle 10 further includes a liquid collection needle outlet 14 communicating with the liquid collection needle chamber 11. The liquid collection needle outlet 14 is adapted to be connected to a liquid outlet pipeline 25 to discharge the cleaning liquid.

[0070] In some embodiments, the liquid extraction device 1 or cleaning unit 20 further includes a cleaning liquid pipeline 26, a cleaning liquid pump 27, and a cleaning liquid tank 28, which are sequentially connected to the cleaning chamber 22. The cleaning liquid tank 28 is adapted to contain cleaning liquid; the cleaning liquid pump 27 is adapted to transport the cleaning liquid in the cleaning liquid tank 28 through the cleaning liquid pipeline 26 to the cleaning chamber 22 to clean the liquid extraction needle 10.

[0071] In some embodiments, the cleaning chamber 21 further includes an outlet portion 24 , which is adapted to allow the liquid extraction needle 10 to partially pass through the cleaning chamber 22 .

[0072] In some embodiments, the outlet portion 24 is adapted to allow the front end of the liquid extraction needle 10 to pass through to exit the cleaning chamber 22 .

[0073] It should be noted that the outlet portion 24 refers to the outlet through which the front end of the liquid collection needle 10 leaves the cleaning chamber 22 and enters the container 30 .

[0074] In a specific implementation, the cleaning unit 20 may be located in front of the container 30 , especially the stopper 32 , and the liquid collection needle 10 is adapted to first pass through the cleaning unit 20 and then pierce the stopper 32 of the container 30 .

[0075] Specifically, the front end of the liquid collection needle 10 first enters the cleaning chamber 22 through the inlet 23 of the cleaning chamber 21 , then leaves the cleaning chamber 22 through the outlet 24 of the cleaning chamber 21 , and then pierces the stopper 32 to enter the container 30 .

[0076] In this way, it is convenient to clean the liquid collection needle 10 after extracting the liquid.

[0077] In some embodiments, the outlet portion 24 is elastic and is suitable for sealing when the front end of the liquid collection needle 10 enters the cleaning chamber 22, and tightly wrapping the outer peripheral side 13 of the liquid collection needle 10 and being sealedly connected to the liquid collection needle 10 when the front end of the liquid collection needle 10 leaves the cleaning chamber 22 through the outlet portion 24.

[0078] When the front end of the liquid collection needle 10 enters the cleaning chamber 22 through the inlet 23 of the cleaning cavity 21, the outlet 24 has a very small diameter so that the cleaning liquid in the cleaning chamber 22 cannot leak through the outlet 24. At this time, the cleaning chamber 22 forms a closed space.

[0079] When the front end of the liquid collection needle 10 leaves the cleaning chamber 22 through the outlet portion 24, the outer peripheral side 13 of the liquid collection needle 10 will abut against the inner periphery of the outlet portion 24, and the outlet portion 24 will produce compression deformation in the radial direction to tightly wrap the outer peripheral side 13 of the liquid collection needle 10, so that the inner periphery of the outlet portion 24 and the outer peripheral side 13 of the liquid collection needle 10 form a sealed connection. At the same time, the inner periphery of the inlet portion 23 also forms a sealed connection with the outer peripheral side 13 of the liquid collection needle 10, and at this time the cleaning chamber 22 also forms a closed space.

[0080] In some embodiments, the outlet portion 24 may be made of a particularly elastic silicone material.

[0081] In some embodiments, the outlet portion 24 may also be made of any other elastic material known in the prior art, which is not limited here.

[0082] As mentioned above, the cleaning unit 20 can be located in front of the container 30, especially the stopper 32. Therefore, the middle portion of the liquid collection needle 10 can also enter the cleaning chamber 22 through the inlet portion 23, and even leave the cleaning chamber 24 through the outlet portion 24, so that the front end of the liquid collection needle 10 can enter the container 30.

[0083] Regardless of whether the middle portion of the liquid collection needle 10 enters the cleaning chamber 22 through the inlet portion 23 or leaves the cleaning chamber 24 through the outlet portion 24, the inner periphery of the inlet portion 23 and the outlet portion 24 can be sealed and connected to the corresponding position of the outer peripheral side 13 of the liquid collection needle 10 to form a closed space in the cleaning chamber 22.

[0084] In some embodiments, it is also possible to clean only the liquid collection needle chamber 11. In this case, the front end of the liquid collection needle 10 can exit the cleaning chamber 22 through the outlet portion 24, while the liquid collection needle inlet hole 12 is exposed in the cleaning chamber 22, so that the cleaning liquid in the cleaning chamber 22 can be introduced into the liquid collection needle chamber 11 through the liquid collection needle inlet hole 12 to clean it.

[0085] In some embodiments, the direction in which the liquid collection needle 10 leaves the cleaning chamber 22 through the outlet portion 24 is consistent with the direction in which it enters the cleaning chamber 22 through the inlet portion 23. In this case, the cleaning chamber 22 is also suitable for serving as a needle entry channel for the liquid collection needle 10, so that the liquid collection needle 10 can smoothly exit the outlet portion 24 through the needle entry channel and enter the container 30.

[0086] In some embodiments, the cleaning chamber 21 is further adapted to form an air needle channel 29 independent of the cleaning chamber 22. The air needle channel 29 is arranged in parallel with the needle entry channel and is adapted to allow the inflation needle 40 to enter and exit. This facilitates the synchronous entry and exit of the inflation needle 40 and the liquid extraction needle 10 into and out of the container 30.

[0087] It is understood that when the liquid collection needle 10 needs to be replaced or needs to leave the cleaning unit 20 for other reasons, the liquid collection needle 10 can exit the cleaning chamber 21 from the inlet 23 of the cleaning chamber 21 or from the outlet 24 and inlet 23 of the cleaning chamber 21 in sequence. The inflation needle 40 can directly exit the air needle channel 29.

[0088] Although specific embodiments of the present invention have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative rather than limiting, unless otherwise stated. In specific implementations, the technical features of one or more dependent claims may be combined with the technical features of the independent claim, depending on actual needs and where technically feasible, and the technical features of the corresponding claims may be combined in any appropriate manner rather than solely through the specific combinations listed in the claims.

[0089] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A cleaning unit for a liquid collection needle, characterized in that: The cleaning unit includes a cleaning cavity and a cleaning chamber formed in the cleaning cavity; the cleaning cavity is suitable for allowing the liquid collection needle to partially pass through to enter and / or leave the cleaning cavity, and is sealed and connected to the liquid collection needle when the liquid collection needle partially enters and / or leaves the cleaning cavity; the cleaning chamber is suitable for receiving cleaning liquid to clean the liquid collection needle with the cleaning liquid; the liquid collection needle includes a hollow liquid collection needle chamber and a liquid collection needle inlet hole connected to the liquid collection needle chamber; the liquid collection needle inlet hole is arranged at the front end of the liquid collection needle and is suitable for being exposed to the cleaning chamber when the liquid collection needle partially enters the cleaning chamber, so as to receive the cleaning liquid and clean the liquid collection needle chamber with the cleaning liquid.

2. The cleaning unit according to claim 1, wherein The cleaning chamber includes an inlet portion; the inlet portion is adapted to allow the liquid collection needle portion to pass through to enter the cleaning chamber, and when the liquid collection needle portion enters the cleaning chamber, the inlet portion tightly wraps the outer circumference of the liquid collection needle and is sealed with the liquid collection needle.

3. The cleaning unit according to claim 1, wherein The inlet portion is elastic and is adapted to be compressed and deformed to tightly wrap the outer peripheral side of the liquid extraction needle at least when the liquid extraction needle partially enters the cleaning chamber.

4. The cleaning unit according to claim 1, wherein The cleaning chamber also includes an outlet portion; the outlet portion is suitable for allowing the liquid collection needle portion to pass through to leave the cleaning chamber; the outlet portion is elastic and is suitable for sealing when the liquid collection needle portion enters the cleaning chamber, and tightly wrapping the outer peripheral side of the liquid collection needle when the liquid collection needle portion leaves the cleaning chamber to be sealed and connected to the liquid collection needle.

5. The cleaning unit according to claim 1, wherein The directions in which the liquid collection needle enters and leaves the cleaning chamber are consistent; the cleaning chamber is also suitable for serving as a needle entry channel for the liquid collection needle.

6. The cleaning unit according to claim 5, characterized in that It also includes an air needle channel formed in the cleaning cavity and independent of the cleaning cavity; the air needle channel is arranged in parallel with the needle entry channel and is suitable for allowing the inflation needle to enter and exit.

7. A liquid collection device comprising the cleaning unit according to any one of claims 1 to 6, characterized in that: The liquid extraction device is used to extract liquid from a container, wherein the container comprises a container mouth and a stopper arranged at the container mouth; the liquid extraction needle is suitable for piercing the stopper and extracting the liquid from the container.

8. The liquid extraction device according to claim 7, characterized in that: It also includes a cleaning liquid pipeline, a cleaning liquid pump and a cleaning liquid tank which are sequentially connected to the cleaning chamber; the cleaning liquid tank is suitable for containing cleaning liquid; the cleaning liquid pump is suitable for transporting the cleaning liquid to the cleaning chamber through the cleaning liquid pipeline.

9. The liquid extraction device according to claim 7, characterized in that: It also includes a liquid outlet pipeline connected to the liquid collection needle; the liquid outlet pipeline is suitable for outputting the liquid extracted by the liquid collection needle or the cleaning liquid for cleaning the liquid collection needle.

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