Liquid injection needle cleaning device

Abstract

The invention relates to the technical field of cleaning, and provides a liquid injection needle cleaning device which comprises a body, a cleaning cavity, a gas path and a water path. The inner wall of the cleaning cavity is provided with an air port communicated with the air path and a water port communicated with the water path; the multiple air ports are circumferentially distributed in a vortex shape, and the water outlet direction of the water ports is consistent with the exhaust direction of the air ports; a to-be-cleaned liquid injection needle is inserted into the body, and a to-be-cleaned part of the liquid injection needle is exposed in the cleaning cavity and is in non-contact with the inner wall of the cleaning cavity; when the cleaning liquid is injected into the cleaning cavity from the water opening along the water path, the cleaning liquid forms vortex in the cleaning cavity under the action of airflow in the multiple air openings in the air path, and the liquid injection needle is cleaned. According to the structural design, the cleaning efficiency and cleanliness of the liquid injection needle can be effectively improved, and it is ensured that the to-be-cleaned part of the liquid injection needle is comprehensively and evenly cleaned; meanwhile, the liquid injection needle and the inner wall of the cleaning cavity are arranged in a non-contact mode, so that secondary pollution is avoided, and the safety and reliability of the cleaning process are improved.

Description

Technical Field

[0001] This application relates to the technical field of injection needle cleaning, and particularly to an injection needle cleaning device. Background Art

[0002] After injection, residues or contaminants often remain on the surface of the needle shaft of the injection needle. When changing to other liquids and using it again, it needs to be cleaned. In the prior art, various methods are usually adopted for cleaning, and the more common methods include ultrasonic cleaning, high-pressure jet cleaning, and bubble flushing, etc. Ultrasonic cleaning uses the cavitation effect generated by high-frequency vibration to remove stains; high-pressure jetting achieves the purpose of decontamination by impacting with high-speed water flow; and bubble flushing enhances the cleaning effect by means of tiny bubbles formed by gas in water. These methods have their own characteristics and are widely used in different scenarios.

[0003] However, the above various cleaning means still have certain limitations in practical applications. For example, although traditional ultrasonic cleaning can effectively remove attachments, it is difficult to thoroughly clean the inside of the slender tubular structure; although high-pressure jetting has a strong physical scouring force, it is easy to cause damage when dealing with precision components; the ability of bubble flushing to peel off specific contaminants is limited, especially in the face of high-viscosity residues. In addition, most existing cleaning devices fail to balance cleaning efficiency and energy consumption, resulting in high usage costs and the risk of cross-infection caused by improper operation. Therefore, how to design a cleaning device that can overcome these problems has become an urgent technical problem to be solved. Summary of the Invention

[0004] In order to solve some deficiencies in the injection needle cleaning of the above prior art, this application provides an injection needle cleaning device.

[0005] An injection needle cleaning device provided by this application adopts the following technical solutions: An injection needle cleaning device includes a main body, a cleaning chamber arranged inside the main body, and an air path and a water path arranged inside the main body; an air port communicating with the air path and a water port communicating with the water path are arranged on the inner wall of the cleaning chamber; a plurality of air ports are arranged and circumferentially distributed in a vortex shape, and the water outlet direction of the water port is the same as the exhaust direction of the air port; the main body is inserted with an injection needle to be cleaned, and the part to be cleaned of the injection needle is exposed in the cleaning chamber and is arranged without contact with the inner wall of the cleaning chamber; When the cleaning liquid is injected into the cleaning chamber from the water port along the water path, the cleaning liquid is affected by the airflow in the plurality of air ports in the air path, so that the cleaning liquid forms a vortex in the cleaning chamber and cleans the injection needle.

[0006] By adopting the above technical solution, the cleaning liquid forms a vortex under the action of the air flow, which can effectively improve the cleaning efficiency and cleanliness, and ensure that the part of the liquid injection needle to be cleaned is comprehensively and evenly cleaned. At the same time, the non-contact setting between the liquid injection needle and the inner wall of the cleaning chamber avoids secondary pollution and improves the safety and reliability of the cleaning process.

[0007] Preferably, the inner diameters of the plurality of air ports gradually decrease along the air intake direction, and the air flow direction is tangent to the part of the liquid injection needle to be cleaned.

[0008] By adopting the above technical solution, the inner diameter of the air port gradually decreases along the air intake direction, which can generate a stronger air flow impact force and improve the cleaning efficiency; at the same time, the air flow direction is tangent to the part of the liquid injection needle to be cleaned, so that the air flow can form a uniform and effective cleaning effect on the surface of the liquid injection needle, further improving the cleaning effect.

[0009] Preferably, the main body includes an upper cavity and a lower cavity. The upper cavity is recessed with an upper chamber, and the lower cavity is recessed with a lower chamber. The upper chamber and the lower chamber cooperate to form the cleaning chamber.

[0010] By adopting the above technical solution, the cleaning chamber has good sealing performance and stability, and can effectively prevent liquid leakage during the cleaning process. At the same time, the combination method of the upper and lower cavities is convenient for disassembly and assembly, which is convenient for maintaining and cleaning the internal components.

[0011] Preferably, the air path includes a purging air path provided in the upper cavity and a cleaning air path provided in the lower cavity; the water path includes a water inlet channel provided in the lower cavity and a drainage channel provided at the bottom of the lower chamber; the water outlet direction of the water inlet channel is arranged opposite to the vortex direction formed by the purging air path.

[0012] By adopting the above technical solution, it can be ensured that the waste liquid generated during the cleaning process can be quickly discharged along the drainage channel, and at the same time, the backflow of the waste liquid is avoided from affecting the cleaning effect. In addition, after the cleaning is completed, the purging air path can effectively remove the residual moisture on the surface of the liquid injection needle and improve the drying efficiency. The design of the reverse vortex not only improves the cleaning and drying effects, but also enhances the working stability and reliability of the entire device.

[0013] Preferably, after the waste liquid in the cleaning chamber is discharged outward along the drainage channel, the purging air path blows and dries the cleaned liquid injection needle.

[0014] By adopting the above technical solution, it not only ensures that the moisture on the surface of the liquid injection needle is quickly removed, improves the cleaning efficiency, but also avoids the problem of secondary pollution caused by residual moisture. At the same time, the purging process further removes the moisture in the cleaning chamber, maintains a dry environment inside the equipment, and extends the service life of the equipment.

[0015] Preferably, when the cleaning liquid cleans the part to be cleaned of the liquid injection needle in the cleaning chamber, the excess air in the cleaning chamber is discharged outward along the purging air path; when the purging air path dries and purges the liquid injection needle after cleaning, the excess air in the cleaning chamber is discharged outward along the cleaning air path.

[0016] By adopting the above technical solution, when the cleaning liquid enters the cleaning chamber to clean the part to be cleaned of the liquid injection needle, the excess air in the cleaning chamber can be effectively discharged, avoiding the interference of bubbles on the cleaning effect and ensuring the stability and reliability of the cleaning process. At the same time, when the purging air path dries and purges the liquid injection needle after cleaning, the excess air in the cleaning chamber can be discharged outward through the cleaning air path, further improving the drying efficiency and ensuring the dryness of the liquid injection needle.

[0017] Preferably, the purging air path includes a first main air duct, a first auxiliary air duct communicating with the first main air duct, and a plurality of first sub-air ducts uniformly distributed along the inner circumferential direction of the first auxiliary air duct; the plurality of first sub-air ducts are all arranged in an arc-shaped and inclined manner and the exhaust ports are located below the first auxiliary air duct.

[0018] By adopting the above technical solution, the design of the purging air path enables the gas to act on the surface of the liquid injection needle evenly and powerfully. Specifically: the structural design of the first main air duct, the first auxiliary air duct and the plurality of first sub-air ducts ensures that the air flow can form a stable eddy current in the cleaning chamber, thereby effectively removing the moisture and residues attached to the liquid injection needle.

[0019] The plurality of first sub-air ducts are arranged in an arc-shaped and inclined manner and the exhaust ports are located below the first auxiliary air duct. This layout further enhances the directivity and impact force of the air flow, improves the drying efficiency, and at the same time reduces the risk of direct scouring damage to the liquid injection needle by the air flow.

[0020] Preferably, the cleaning air path includes a second main air duct, a second auxiliary air duct communicating with the second main air duct, and a plurality of second sub-air ducts uniformly distributed along the inner circumferential direction of the second auxiliary air duct; the plurality of second sub-air ducts are all arranged in an arc-shaped and inclined manner and the exhaust ports are located above the second auxiliary air duct.

[0021] By adopting the above technical solution, the design of the cleaning air path enables the gas to be evenly distributed around the liquid injection needle, forming an effective eddy current effect. Specifically, the combined design of the second main air duct, the second auxiliary air duct and the plurality of second sub-air ducts ensures the stability and directivity of the air flow, enabling the air flow to flow along the part to be cleaned of the liquid injection needle, thereby improving the cleaning efficiency and cleanliness. At the same time, the arc-shaped and inclined setting of the second sub-air ducts and the optimization of the position of the exhaust ports further enhance the impact force and coverage range of the air flow, effectively removing the dirt and residues attached to the surface of the liquid injection needle.

[0022] Preferably, the exhaust ports of the plurality of first auxiliary air passages and the exhaust ports of the plurality of second air passages are circumferentially distributed on the inner wall of the cleaning chamber to form the air ports.

[0023] By adopting the above technical solution, the exhaust ports of the plurality of first auxiliary air passages and the exhaust ports of the plurality of second air passages are circumferentially distributed on the inner wall of the cleaning chamber to form air ports, enabling the air flow to be evenly distributed inside the cleaning chamber, enhancing the eddy current effect, and improving the cleaning efficiency. At the same time, this design can also ensure that all parts of the liquid injection needle are fully impacted by the air flow, thereby more thoroughly removing dirt.

[0024] Preferably, the upper cavity is provided with a needle hole for inserting the liquid injection needle, and a clearance is provided between the root of the part of the liquid injection needle to be cleaned and the needle hole.

[0025] By adopting the above technical solution, a clearance is provided between the root of the needle rod of the liquid injection needle and the needle hole of the upper cavity, avoiding contact between the liquid injection needle and the needle hole during the cleaning process. While reducing mechanical wear, it can prevent residues or contaminants on the needle rod from contaminating the needle hole, and then avoid secondary contamination of the liquid injection needle after cleaning.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The multiple air ports are circumferentially distributed in a vortex shape, and the air flow direction is tangent to the part of the liquid injection needle to be cleaned, enabling the cleaning liquid to form an efficient vortex in the cleaning chamber, enhancing the cleaning effect on the surface and inside of the liquid injection needle; 2. The synergistic effect of the cleaning liquid and the air flow not only improves the cleaning efficiency, but also reduces the cleaning time and energy consumption, thus effectively solving the problem of high energy consumption in the prior art; 3. The part of the liquid injection needle to be cleaned is exposed in the cleaning chamber and is arranged without physical contact with the inner wall of the cleaning chamber, avoiding mechanical damage caused by physical contact in traditional cleaning devices and preventing the risk of cross-infection. Description of the Drawings

[0027] Figure 1 is an axonometric view of a liquid injection needle cleaning device in an embodiment of the present application; Figure 2 is Figure 1 exploded view of.

[0028] Figure 3 is Figure 1 front view of.

[0029] Figure 4 is Figure 3 cross-sectional view taken along the A-A section in.

[0030] Figure 5 isFigure 3 Cross-sectional view of section B-B.

[0031] Figure 6 Is Figure 4 Cross-sectional view of section C-C.

[0032] Figure 7 Is Figure 6 Schematic diagram of the air duct of the purging air path.

[0033] Figure 8 Is Figure 1 Axonometric view of the upper cavity.

[0034] Figure 9 Is Figure 4 Cross-sectional view of section D-D.

[0035] Figure 10 Is Figure 1 Axonometric view of the lower cavity.

[0036] Explanation of reference numerals: 1. Body; 11. Upper cavity; 111. Pinhole; 112. Upper chamber; 12. Lower cavity; 121. Lower chamber; 2. Cleaning chamber; 21. Air port; 22. Water port; 3. Air path; 31. Purging air path; 311. First main air duct; 312. First auxiliary air duct; 313. First secondary air duct; 32. Cleaning air path; 321. Second main air duct; 322. Second auxiliary air duct; 323. Second secondary air duct; 4. Water path; 41. Water inlet channel; 42. Drainage channel; 5. Liquid injection needle. Detailed implementation manners

[0037] The present application will be further described in detail below with reference to the accompanying drawings.

[0038] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Plurality" means at least two.

[0039] The orientation terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", "top", "bottom", "side", etc., are only with reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present application.

[0040] In the embodiments of the present application, the limitations on the relative position relationships, such as parallel, perpendicular, alignment, etc., are all in view of the current technological level and are not absolute and strict limitations. A small deviation is allowed, and being approximately parallel, approximately perpendicular, approximately aligned, etc. are all acceptable. For example, when it is stated that A is parallel to B, it means that A is parallel to B or approximately parallel to B, and the included angle between A and B can be between 0 degrees and 10 degrees. For example, when it is stated that A is perpendicular to B, it means that A is perpendicular to B or approximately perpendicular to B, and the included angle between A and B can be between 80 degrees and 100 degrees.

[0041] In the embodiments of the present application, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of such features.

[0042] Combined with Figures 1 to 10 As shown, the embodiments of the present application disclose a liquid injection needle cleaning device, which includes a main body 1, a cleaning chamber 2 provided in the main body 1, and an air path 3 and a water path 4 provided in the main body 1; preferably, the six air ports 21 of the air path 3 are all distributed in a vortex shape on the inner wall of the cleaning chamber 2, and the water ports 22 of the water path 4 are also distributed on the inner wall of the cleaning chamber 2; in addition, the liquid injection needle 5 to be cleaned is inserted into the main body 1, and the part of the liquid injection needle 5 to be cleaned is exposed in the cleaning chamber 2 and is arranged without contact with the inner wall of the cleaning chamber 2.

[0043] Since the multiple air ports 21 distributed on the inner wall of the cleaning chamber 2 are distributed in a vortex shape, when the cleaning liquid is injected into the cleaning chamber 2 from the water port 22 along the water path 4, the cleaning liquid is affected by the airflow in the six air ports 21 of the air path 3, so that the cleaning liquid forms a vortex in the cleaning chamber 2 and cleans the liquid injection needle 5. Further, in order to prevent the cleaning liquid from flowing back into the water path 4 through the water port 22 and polluting the water path 4 when the cleaning liquid forms a vortex, preferably, the water outlet direction of the water port 22 is the same as the air exhaust direction of the air port 21. During processing, the water port 22 can be arranged above the six air ports 21.

[0044] In addition, in order to enable the airflow blown through the multiple air ports 21 to form a uniform and effective cleaning effect on the surface of the liquid injection needle 5 and further improve the cleaning effect, preferably, the inner diameters of the multiple air ports 21 gradually decrease along the air intake direction. At the same time, the airflow direction is tangentially arranged with the part of the liquid injection needle 5 to be cleaned, so as to generate a stronger airflow impact force and improve the cleaning efficiency of the liquid injection needle 5.

[0045] The liquid injection and cleaning needle device designed with the above structure forms a vortex under the action of air flow, which can effectively improve the cleaning efficiency and cleanliness, ensuring that the part to be cleaned of the liquid injection needle 5 is comprehensively and evenly cleaned. At the same time, the non-contact setting between the liquid injection needle 5 and the inner wall of the cleaning chamber 2 avoids secondary pollution and improves the safety and reliability of the cleaning process.

[0046] Furthermore, for the processing and assembly of the liquid injection needle cleaning device, referring to Figure 2 and Figure 4 As shown, preferably, the above-mentioned body 1 is assembled by an upper cavity 11 and a lower cavity 12. Among them, a upper chamber 112 is concavely provided upward in the middle of the lower bottom surface of the upper cavity 11, and a lower chamber 121 is concavely provided downward in the middle of the upper surface of the lower cavity 12. In this way, a cleaning chamber 2 with a smooth inner wall is formed by the sealing of the upper chamber 112 and the lower chamber 121, enabling the cleaning liquid to rotate smoothly under the action of air flow, and then efficiently cleaning the part to be cleaned of the liquid injection needle 5.

[0047] In addition, in order to facilitate the insertion of the liquid injection needle 5, a needle hole 111 for inserting the liquid injection needle 5 is also provided in the middle of the upper surface of the upper cavity 11, and there is a clearance between the root of the part to be cleaned of the liquid injection needle 5 and the needle hole 111. This avoids the contact between the liquid injection needle 5 and the needle hole 111 during the cleaning process. While reducing mechanical wear, it can prevent the residues or contaminants on the needle rod from polluting the needle hole 111, and then avoid secondary pollution to the cleaned liquid injection needle 5.

[0048] Furthermore, as the first preferred embodiment of this solution, in order to facilitate the cleaning liquid flowing into the cleaning chamber 2 to form a vortex in the cleaning chamber 2 under the action of air flow, so as to more efficiently clean the part to be cleaned of the cleaning needle. Preferably, the above-mentioned air path 3 and water path 4 are both arranged in the lower cavity 12. Referring to Figure 10 As shown, the water path 4 includes a water inlet channel 41 and a drainage channel 42. Among them, the drainage channel 42 is vertically arranged in the middle of the lower chamber 121, and the water inlet channel 41 is horizontally arranged slightly downward above a plurality of air ports 21 in the lower chamber 121.

[0049] The air path 3 can be separately set as a cleaning air path 32, which has both the dual effects of cleaning and air drying. That is, when the cleaning liquid is injected through the water inlet channel 41, the cleaning air path 32 can be used to make the cleaning liquid form a vortex in the cleaning chamber 2, accelerating the cleaning efficiency of the liquid injection needle 5. It should be noted that during the cleaning process, since it is necessary to continuously blow air into the cleaning chamber 2, in order to reduce the air pressure in the cleaning chamber 2, the drainage channel 42 can be appropriately opened to discharge the sewage during the cleaning process, so as to play a role in pressure relief; when the cleaning liquid after cleaning is emptied out through the drainage channel 42, the liquid injection needle 5 can also be purged and air dried through the cleaning air path 32, and the gas generated during the purging is discharged outward through the drainage channel 42.

[0050] Operating in this way can not only separate the gas path 3 and the water path 4, but also be easier to install and debug compared with the cleaning method using a high-pressure water chamber in the traditional cleaning method. It only needs to connect the gas path 3 and the water path 4 to the corresponding gas supply and water supply devices respectively.

[0051] As another preferred embodiment of this solution, referring to Figure 5 As shown, the gas path 3 can also be respectively set as two independent gas paths, namely a purging gas path 31 and a cleaning gas path 32. The purging gas path 31 is arranged in the upper cavity 11, and the cleaning gas path 32 is arranged in the lower cavity 12. Moreover, the water outlet direction of the water inlet channel 41 is set opposite to the eddy current direction formed by the purging gas path 31.

[0052] After the waste liquid in the cleaning chamber 2 is discharged outward along the drainage channel 42, the purging gas path 31 dries and purges the injection needle 5 after cleaning; when the cleaning liquid cleans the part to be cleaned of the injection needle 5 in the cleaning chamber 2, the excess air in the cleaning chamber 2 is discharged outward along the purging gas path 31; when the purging gas path 31 dries and purges the injection needle 5 after cleaning, the excess air in the cleaning chamber 2 will be discharged outward along the cleaning gas path 32.

[0053] Cleaning the injection needle 5 in the above way can ensure that the waste liquid generated during the cleaning process can be quickly discharged along the drainage channel 42, and at the same time avoid the influence of waste liquid backflow on the cleaning effect. The design of the reverse eddy current not only improves the cleaning and drying effects, but also enhances the working stability and reliability of the entire device; In addition, the setting of the purging gas path 31 ensures that the moisture on the surface of the injection needle 5 is quickly removed, improves the cleaning efficiency, and also avoids the problem of secondary pollution caused by residual moisture. At the same time, the purging process further removes the moisture in the cleaning chamber 2, maintains a dry environment inside the device, and extends the service life of the device; when the cleaning liquid enters the cleaning chamber 2 to clean the part to be cleaned of the injection needle 5, it can effectively discharge the excess air in the cleaning chamber 2, avoid the interference of bubbles on the cleaning effect, and ensure the stability and reliability of the cleaning process.

[0054] At the same time, when the purging gas path 31 dries and purges the injection needle 5 after cleaning, the excess air in the cleaning chamber 2 can be discharged outward through the cleaning gas path 32, further improving the air-drying efficiency and ensuring the dryness of the injection needle 5.

[0055] Furthermore, referring to Figures 5 to 8As shown, preferably, the above-mentioned purging air passage 31 includes a first main air passage 311, a first auxiliary air passage 312 communicating with the first main air passage 311, and a plurality of first sub-air passages 313 uniformly distributed circumferentially along the inner side of the first auxiliary air passage 312; the plurality of first sub-air passages 313 are all arranged in an arc-shaped and inclined manner, and the exhaust port 21 is located below the first auxiliary air passage 312. With the purging air passage 31 designed in this structure, since the plurality of first sub-air passages 313 are uniformly distributed on the inner side of the first auxiliary air passage 312 and are all arranged in an arc-shaped and inclined manner, it can preferably ensure that the air flow can form a stable eddy current in the cleaning chamber 2, thereby effectively removing the moisture and residues attached to the liquid injection needle 5.

[0056] In addition, since the exhaust port 21 is located below the first auxiliary air passage 312, this layout further enhances the directivity and impact force of the air flow, improves the air-drying efficiency, and at the same time reduces the risk of direct scouring damage to the liquid injection needle 5 by the air flow.

[0057] Furthermore, similar to the above-mentioned purging air passage 31, referring to Figure 5 , Figure 9 and Figure 10 shown, the cleaning air passage 32 includes a second main air passage 321, a second auxiliary air passage 322 communicating with the second main air passage 321, and a plurality of second sub-air passages 323 uniformly distributed circumferentially along the inner side of the second auxiliary air passage 322; the plurality of second sub-air passages are all arranged in an arc-shaped and inclined manner, and the exhaust port 21 is located above the second auxiliary air passage 322. The plurality of second sub-air passages 323 uniformly distributed circumferentially on the inner side of the second auxiliary air passage 322 can be evenly distributed around the liquid injection needle 5 to form an effective eddy current effect, and at the same time ensure the stability and directivity of the air flow, so that the air flow can flow along the part to be cleaned of the liquid injection needle 5, thereby improving the cleaning efficiency and cleanliness; in addition, the arc-shaped and inclined arrangement of the second sub-air passages 323 and the position optimization of the exhaust port 21 further enhance the impact force and coverage of the air flow, effectively removing the dirt and residues attached to the surface of the liquid injection needle 5.

[0058] The exhaust ports 21 of the first sub-air passages 313 and the second sub-air passages arranged in the above manner are all circumferentially distributed on the inner wall of the cleaning chamber 2 to form the above-mentioned air ports 21, so that the air flow can be evenly distributed inside the cleaning chamber 2 to form an eddy current effect, thereby improving the cleaning efficiency of the liquid injection needle 5. At the same time, this design can also ensure that all parts of the liquid injection needle 5 can be fully impacted by the air flow, so as to more thoroughly remove the dirt.

[0059] The implementation principle of this application is as follows: After the cleaning liquid is injected into the cleaning chamber 2 along the water inlet channel 41 in the lower cavity 12, the air flow blown into the cleaning chamber 2 through multiple cleaning air paths 32 causes the cleaning liquid to form a vortex in the cleaning chamber 2, thereby cleaning the cleaning needle. Then, the sewage is discharged through the drainage channel 42 provided at the bottom of the cleaning chamber 2. After that, the injection needle 5 after cleaning is air-dried through the purging air path 31 provided in the upper cavity 11. During the purging process, the waste gas can be discharged from the cleaning chamber 2 through the cleaning air path 32.

[0060] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A liquid injection needle cleaning device, characterized in that, It includes a main body (1), a cleaning chamber (2) arranged inside the main body (1), an air path (3) and a water path (4) arranged inside the main body (1); an air port (21) communicating with the air path (3) and a water port (22) communicating with the water path (4) are arranged on the inner wall of the cleaning chamber (2); a plurality of the air ports (21) are arranged and circumferentially distributed in a vortex shape, and the water outlet direction of the water port (22) is the same as the exhaust direction of the air port (21); a liquid injection needle (5) to be cleaned is inserted into the main body (1), and the part to be cleaned of the liquid injection needle (5) is exposed in the cleaning chamber (2) and is arranged without contact with the inner wall of the cleaning chamber (2). When the cleaning liquid is injected into the cleaning chamber (2) from the water port (22) along the water path (4), the cleaning liquid is affected by the airflow in the plurality of air ports (21) in the air path (3), so that the cleaning liquid forms a vortex in the cleaning chamber (2) and cleans the liquid injection needle (5).

2. The liquid injection needle cleaning device according to claim 1, wherein The inner diameters of the plurality of air ports (21) gradually decrease along the air inlet direction, and the airflow direction is tangential to the part to be cleaned of the liquid injection needle (5).

3. The liquid injection needle cleaning device according to claim 1, characterized in that, The main body (1) includes an upper cavity (11) and a lower cavity (12), an upper chamber (112) is recessed in the upper cavity (11), a lower chamber (121) is recessed in the lower cavity (12), and the upper chamber (112) and the lower chamber (121) cooperate to form the cleaning chamber (2).

4. The liquid injection needle cleaning device according to claim 3, wherein The air path (3) includes a purging air path (31) arranged in the upper cavity (11) and a cleaning air path (32) arranged in the lower cavity (12); the water path (4) includes a water inlet channel (41) arranged in the lower cavity (12) and a drainage channel (42) arranged at the bottom of the lower chamber (121); the water outlet direction of the water inlet channel (41) is arranged opposite to the vortex direction formed by the purging air path (31).

5. The liquid injection needle cleaning device according to claim 4, characterized in that, After the waste liquid in the cleaning chamber (2) is discharged outward along the drainage channel (42), the purging air path (31) purges the liquid injection needle (5) after cleaning.

6. The liquid injection needle cleaning device according to claim 4, characterized in that, When the cleaning liquid cleans the part to be cleaned of the liquid injection needle (5) in the cleaning chamber (2), the excess air in the cleaning chamber (2) is discharged outward along the purging air path (31); when the purging air path (31) dries and purges the liquid injection needle (5) after cleaning, the excess air in the cleaning chamber (2) is discharged outward along the cleaning air path (32).

7. The liquid injection needle cleaning device according to claim 4, wherein The purging air path (31) includes a first main air duct (311), a first auxiliary air duct (312) communicating with the first main air duct (311), and a plurality of first sub-air ducts (313) evenly distributed circumferentially along the inner side of the first auxiliary air duct (312); the plurality of first sub-air ducts are all arranged in an arc-shaped and inclined manner, and the air outlet (21) is located below the first auxiliary air duct (312).

8. The liquid injection needle cleaning device according to claim 7, wherein, The cleaning air passage (32) includes a second main air passage (321), a second auxiliary air passage (322) communicating with the second main air passage (321), and a plurality of second sub-air passages (323) uniformly distributed circumferentially along the inner side of the second auxiliary air passage (322); the plurality of second sub-air passages are all arranged in an arc-shaped inclination, and the exhaust port (21) is located above the second auxiliary air passage (322).

9. The liquid injection needle cleaning device according to claim 8, characterized in that, The exhaust ports (21) of the plurality of first sub-air passages (313) and the exhaust ports (21) of the plurality of second sub-air passages (323) are circumferentially distributed on the inner wall of the cleaning chamber (2) to form the air ports (21).

10. The liquid injection needle cleaning device according to claim 4, characterized in that, The upper cavity (11) is provided with a needle hole (111) for inserting the liquid injection needle (5), and a clearance is provided between the root of the part to be cleaned of the liquid injection needle (5) and the needle hole (111).

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