Automatic liquid adding needle cleaning device

Abstract

The utility model provides an automatic liquid adding needle cleaning device which comprises a cleaning base, a first cleaning channel, a second cleaning channel and a liquid discharging channel, the first cleaning channel, the second cleaning channel and the liquid discharging channel are arranged in the cleaning base, the first cleaning channel is used for cleaning the outer wall of a liquid adding needle, the second cleaning channel is used for cleaning the inner wall of the liquid adding needle, and the liquid discharging channel is used for discharging waste liquid generated after cleaning. The first cleaning channel and the second cleaning channel are arranged in a spaced mode, the second cleaning channel is communicated with the liquid discharging channel, and the first cleaning channel and the second cleaning channel share the liquid discharging channel. According to the invention, the inner wall and the outer wall of the liquid adding needle can be cleaned in different channels, the most suitable cleaning liquid can be selected according to different pollutions of the inner wall and the outer wall, the risk of cross contamination is reduced, and automation and unmanned operation of the whole sample treatment process are facilitated.

Description

Technical Field

[0001] This disclosure relates to the field of automated equipment technology, specifically to the field of pharmaceutical and chemical automated equipment technology, and particularly to an automated liquid dispensing needle cleaning device. Background Technology

[0002] A dispensing needle is an auxiliary tool used in laboratories for liquid transfer. After sample injection, sample residue remains on the dispensing needle, which can easily contaminate the sample during subsequent uses, affecting experimental results. Therefore, cleaning the dispensing needle is crucial, as it directly affects the accuracy of experimental results.

[0003] The inner and outer walls of the injection needle require regular cleaning to ensure the transferred liquid remains uncontaminated. Currently, the injection needle is cleaned using the same cleaning channel for both the inner and outer walls. However, this method has the following drawbacks: 1. Cross-contamination: If the contaminants on the inner and outer walls are different, using the same cleaning channel may lead to cross-contamination; contaminants on the inner wall may contaminate the outer wall, and vice versa. 2. Optimization of cleaning solution: Using the same cleaning channel means only one type of cleaning solution can be used, which may not be suitable for situations where the contaminants on the inner and outer walls are of different types. 3. Cleaning efficiency: The same cleaning channel may require a longer time to ensure both the inner and outer walls are thoroughly cleaned, as multiple cycles may be needed to achieve the desired cleaning effect. Utility Model Content

[0004] To address the aforementioned issues, this disclosure provides an automated liquid dispensing needle cleaning device that reduces the risk of cross-contamination, improves cleaning efficiency, and lowers the manufacturing cost of the cleaning device.

[0005] In a first aspect, embodiments of this disclosure provide an automated liquid injection needle cleaning device, comprising: a cleaning seat, a first cleaning channel, a second cleaning channel, and a drain channel disposed in the cleaning seat, the first cleaning channel being used to clean the outer wall of the liquid injection needle, the second cleaning channel being used to clean the inner wall of the liquid injection needle, and the drain channel being used to discharge waste liquid after cleaning, the first cleaning channel and the second cleaning channel being disposed apart, the second cleaning channel being connected to the drain channel, and the first cleaning channel and the second cleaning channel sharing the drain channel.

[0006] In some embodiments, one end of the first cleaning channel has a first inlet for inserting a liquid needle, and the other end is closed; one end of the second cleaning channel has a second inlet for inserting a liquid needle, and the other end is connected to the drain channel; the first inlet is connected to the second inlet.

[0007] In some embodiments, the cleaning seat is a rectangular block structure, and the first cleaning channel and the second cleaning channel are vertically arranged in the cleaning seat.

[0008] In some embodiments, the drain channel is located below the second cleaning channel, and the angle between the drain channel and the second cleaning channel is equal to or greater than 90 degrees.

[0009] In some embodiments, the depth of the second cleaning channel is equal to or less than the depth of the first cleaning channel.

[0010] In some embodiments, the drain channel has a drain outlet that is connected to a waste bottle.

[0011] In some embodiments, a first connecting channel is provided between the first inlet and the second inlet, so that the cleaning fluid flows from the first cleaning channel to the second cleaning channel.

[0012] In some embodiments, a first connecting channel is disposed inside the cleaning seat, a first inclined surface is formed from the first inlet to the top surface of the cleaning seat, a second inclined surface is formed from the second inlet to the top surface of the cleaning seat, and a second connecting channel is formed between the first inclined surface and the second inclined surface.

[0013] In some embodiments, the first connecting channel is linear or curved, and the second connecting channel is linear or curved.

[0014] In some embodiments, the height of the second entrance is lower than the height of the first entrance.

[0015] In some embodiments, the automated liquid dosing needle cleaning device further includes a drain pump to assist in discharging waste liquid from the liquid channel.

[0016] In some embodiments, the cleaning seat is provided with multiple sets of first cleaning channels and second cleaning channels, and the multiple sets of first cleaning channels and second cleaning channels share the same drainage channel.

[0017] In some embodiments, multiple sets of first cleaning channels and second cleaning channels are provided at certain intervals along the long side of the cleaning seat, and the drain channel extends along the long side of the cleaning seat.

[0018] In some embodiments, the cross-sections of the first cleaning channel and the second cleaning channel are circular, triangular, square or other irregular shapes, and the cross-sectional areas of the first cleaning channel and the second cleaning channel are greater than the cross-sectional area of ​​the liquid injection needle.

[0019] According to embodiments of this disclosure, the inner and outer walls of the liquid addition needle can be cleaned through separate channels, providing more thorough and customized cleaning, reducing the risk of cross-contamination, and improving cleaning efficiency. The separate channel cleaning method for the inner and outer walls of the liquid addition needle allows for the selection of the most suitable cleaning solution for different types of contamination. Furthermore, the outer and inner wall cleaning channels share a single drain, reducing device complexity and preparation costs, and facilitating the automation and unmanned operation of the entire sample processing process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an automated liquid dispensing needle cleaning device according to an embodiment of the present disclosure;

[0021] Figure 2A This is a perspective view of an automated liquid dispensing needle cleaning device according to an embodiment of the present disclosure;

[0022] Figure 2B This is a perspective view of an automated liquid dispensing needle cleaning apparatus according to an embodiment of the present disclosure;

[0023] Figure 3 This is a top view of an automated liquid dispensing needle cleaning apparatus according to an embodiment of the present disclosure;

[0024] Figure 4 yes Figure 3 A cross-sectional view along the AA direction of the automated liquid dispensing needle cleaning device shown;

[0025] Figure 5 yes Figure 3 A cross-sectional view along the BB direction of the automated liquid dispensing needle cleaning device shown. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions of this disclosure will be described in detail below with reference to the accompanying drawings.

[0027] Exemplary embodiments will be described more fully below with reference to the accompanying drawings; however, these exemplary embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0028] Where there is no conflict, the various embodiments of this disclosure and the features thereof in the embodiments may be combined with each other.

[0029] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded.

[0031] The embodiments described herein can be described with reference to plan views and / or cross-sectional views using the ideal schematic diagrams of this disclosure. Therefore, the example illustrations can be modified according to manufacturing techniques and / or tolerances. Therefore, the embodiments are not limited to those shown in the drawings, but include modifications to configurations formed based on manufacturing processes. Therefore, the areas illustrated in the drawings are schematic in nature, and the shapes of the areas shown in the figures illustrate specific shapes of areas of an element, but are not intended to be limiting.

[0032] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.

[0033] The embodiments of this disclosure will be further described below with reference to the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of an automated liquid dispensing needle cleaning device according to an embodiment of this disclosure. (Refer to...) Figure 1 The automated liquid dispensing needle cleaning device of this embodiment includes a cleaning base 6, a first cleaning channel 3, a second cleaning channel 5 disposed in the cleaning base 6, and a drain channel 7, wherein the drain channel 7 has a drain outlet 4 for discharging waste liquid, and the drain outlet 4 is connected to a waste liquid bottle (not shown). The first cleaning channel 3 and the second cleaning channel 5 are adjacent to each other and spaced apart. The first cleaning channel 3 and the second cleaning channel 5 share the drain channel 7.

[0035] Figure 2A This is a perspective view of an automated liquid dispensing needle cleaning device according to an embodiment of the present disclosure. Figure 2B This is a perspective view of an automated liquid dispensing needle cleaning apparatus according to an embodiment of this disclosure. Figure 3 This is a top view of an automated liquid dispensing needle cleaning apparatus according to an embodiment of this disclosure. Figure 4 yes Figure 3 The diagram shows a cross-sectional view along the AA direction of the automated liquid dispensing needle cleaning device. Figure 5 yes Figure 3The figure shows a cross-sectional view along the BB direction of the automated dispensing needle cleaning device. Referring to these figures, the cleaning seat 6 has a rectangular block structure, and a first cleaning channel 3 is provided inside the cleaning seat 6 for cleaning the outer wall of the dispensing needle 1. The first cleaning channel 3 is vertically arranged in the cleaning seat 6, with a first inlet 8 at one end for insertion of the dispensing needle 1, and the other end is closed. The first cleaning channel 3 can accommodate at least a portion of the dispensing needle 1, and the cleaning fluid cleans the outer wall of the dispensing needle 1 within the first cleaning channel 3. The depth of the first cleaning channel 3 can be approximately the same as the length of the dispensing needle 1, so that the outer wall of the dispensing needle 1 can be thoroughly cleaned; the depth of the first cleaning channel 3 can also be less than the length of the dispensing needle 1, as long as it meets the requirement of cleaning the outer wall of the dispensing needle.

[0036] The cleaning seat 6 also has a second cleaning channel 5 for cleaning the inner wall of the injection needle 1. The second cleaning channel 5 is vertically arranged in the cleaning seat 6, adjacent to and separated from the first cleaning channel 3. One end of the second cleaning channel 5 has a second inlet 9 for inserting the injection needle 1, and the other end is connected to the drainage channel 7. The second inlet 9 of the second cleaning channel 5 is connected to the first inlet 8 of the first cleaning channel 3, allowing the cleaning fluid to overflow from the first cleaning channel 3 into the second cleaning channel 5 and be discharged.

[0037] When cleaning the inner wall of the filling needle 1, the cleaning fluid is directly flushed out from the inner wall of the filling needle 1 to achieve cleaning. Therefore, the depth of the second cleaning channel 5 does not need to be approximately the same as the length of the filling needle 1, and can be smaller than the length of the filling needle 1. In some embodiments, such as Figure 1 As shown, the depth of the second cleaning channel 5 is smaller than the depth of the first cleaning channel 3; in some embodiments, such as Figure 2B As shown, the depth of the second cleaning channel 5 is approximately the same as the depth of the first cleaning channel 3.

[0038] The cleaning seat 6 also has a drainage channel 7 for discharging waste liquid after cleaning. For example... Figure 1 and Figure 2B As shown, at one end of the second cleaning channel 5 opposite to the second inlet 9, the second cleaning channel 5 is connected to the drain channel 7. In some embodiments, such as Figure 2B As shown, the drain channel 7 is located near the bottom of the cleaning seat 6 and is approximately perpendicular to the second cleaning channel 5. It is understood that the drain channel 7 can also be set at an angle, for example, with an angle greater than 90 degrees or less than 90 degrees with the second cleaning channel 5. In short, the location of the drain channel 7 and its positional relationship with the second cleaning channel 5 are not specifically limited, as long as the waste liquid can be discharged smoothly.

[0039] The drainage channel 7 has a drainage port 4 for discharging waste liquid, which is connected to a waste liquid bottle (not shown). A drainage pump can also be installed to pump the waste liquid out of the drainage channel 7, thereby assisting in the discharge of waste liquid.

[0040] When cleaning the inner wall of the filling needle 1, the filling needle 1 is inserted into the second cleaning channel 5, and cleaning fluid is sprayed out through the filling needle 1 to complete the cleaning of the inner wall. At the same time, the waste liquid after cleaning is discharged from the device through the drain port 4. When cleaning the outer wall of the filling needle 1, the filling needle 1 is inserted into the first cleaning channel 3, and cleaning fluid is sprayed out through the filling needle 1. The cleaning fluid accumulates in the first cleaning channel 3, and the liquid level gradually rises. Then, the cleaning fluid overflows from the first cleaning channel 3, completing the cleaning of the outer wall. At the same time, the waste liquid after cleaning overflows into the second cleaning channel 5 and is finally discharged through the drain port 4. The flow direction of the cleaning fluid is as follows: Figure 1 As indicated by the middle arrow.

[0041] In some embodiments, a connecting channel may be provided between the second inlet 9 of the second cleaning channel 5 and the first inlet 8 of the first cleaning channel 3 to guide the cleaning fluid in the first cleaning channel 3 into the second cleaning channel 5.

[0042] like Figure 2A and Figure 2B As shown, a first connecting channel 10 is provided between the second inlet 9 and the first inlet 8. The cleaning fluid overflowing from the first cleaning channel 3 can flow into the second cleaning channel 5 through the first connecting channel 10. The first connecting channel 10 can be straight or curved, and is not specifically limited, as long as it can guide the cleaning fluid in the first cleaning channel 3 into the second cleaning channel 5.

[0043] In some embodiments, such as Figure 2B As shown, to prevent the cleaning fluid from overflowing from the first connecting channel 10 into the cleaning seat 6, the first connecting channel 10 is disposed within the cleaning seat 6, forming a conical inclined surface from the first inlet 8 to the top surface of the cleaning seat 6, and a conical inclined surface from the second opening 9 to the top surface of the cleaning seat 6. This inclined surface guides the cleaning fluid into the first cleaning channel 3 or the second cleaning channel 5, and prevents the cleaning fluid from overflowing from the first cleaning channel 3 or the second cleaning channel 5 into the cleaning seat 6. Furthermore, as... Figure 2B As shown, a second connecting channel 11 can also be provided between the two inclined surfaces. When the amount of cleaning fluid in the first cleaning channel 3 is large, the second connecting channel 11 can further guide the cleaning fluid from the first cleaning channel 3 into the second cleaning channel 5, without overflowing outside the cleaning seat 6. The second connecting channel 11 can be straight or curved, without specific limitation, as long as it can guide the cleaning fluid in the first cleaning channel 3 into the second cleaning channel 5.

[0044] In some embodiments, the second inlet 9 of the second cleaning channel 5 is lower than the first inlet 8 of the first cleaning channel 3 to facilitate the flow of cleaning fluid from the first cleaning channel 3 into the second cleaning channel 5.

[0045] In some embodiments, the cleaning seat 6 may be provided with multiple sets of first cleaning channels 3 and second cleaning channels 5 to simultaneously clean multiple liquid injection needles, thereby increasing the cleaning throughput. (Refer to...) Figure 2B Two sets of first cleaning channels 3 and second cleaning channels 5 are arranged at a certain distance along the long side of the cleaning seat 6. The distance is to avoid mutual interference when cleaning multiple liquid injection needles simultaneously. The number of first cleaning channels 3 and second cleaning channels 5 is not limited and can be 2, 3, 4 or more sets. The drain channel 7 extends along the long side of the cleaning seat 6. Multiple sets of second cleaning channels 5 can share the same drain channel 7, which reduces the complexity of the device and the difficulty of manufacturing. If a drain pump is installed, only one drain pump can be installed, reducing equipment costs.

[0046] In some embodiments, the cross-sections of the first cleaning channel 3 and the second cleaning channel 5 can be circular, triangular, square, or other irregular shapes. Furthermore, the cross-sectional areas of the first cleaning channel 3 and the second cleaning channel 5 are larger than the cross-sectional area of ​​the liquid injection needle 1 to prevent the liquid injection needle 1 from touching the sidewall of the cleaning channel during insertion, thus preventing contamination and wear of the liquid injection needle 1.

[0047] The automated dispensing needle cleaning apparatus of this disclosure provides more thorough and customized cleaning, reduces the risk of cross-contamination, and improves cleaning efficiency. It ensures that both the inner and outer walls of the dispensing needle are adequately cleaned because the cleaning solution can be optimized for each wall. For example, the inner wall of the dispensing needle may require a cleaning solution that removes residual liquid, while the outer wall may require a different cleaning solution that removes dust and other contaminants.

[0048] When cleaning the filling needle, the inner wall is usually cleaned first, followed by the outer wall. This prevents the cleaning solution from splashing and contaminating the outer wall during the inner cleaning process. If cleaning solution overflows from the outer wall into the inner cleaning channel, it can flush that channel. When cleaning the inner wall, the cleaning solution flows directly out, preventing contamination from residual liquid on the channel walls. Even if the outer wall is cleaned first, any residual cleaning solution in the inner cleaning channel will not contaminate the outer wall.

[0049] The automated dispensing needle cleaning device of this disclosure can be widely used in dispensing equipment, where the dispensing needle is cleaned from... Figure 1 The sample solution is drawn from the test tube or solvent bottle 2 containing the sample solution. The cleaning solution used to clean the dosing needle can be stored separately in a cleaning solution storage container. When the dosing needle needs to be cleaned, the cleaning solution is drawn into the dosing needle by the pump valve device.

[0050] In some embodiments, the sample is a biological sample, a pharmaceutical sample, or a chemical sample. When the sample is a pharmaceutical sample, it can be a Western medicine sample, a traditional Chinese medicine sample, or other drug samples with medicinal effects. For example, traditional Chinese medicine samples include raw medicinal herbs, prepared slices of traditional Chinese medicine, proprietary Chinese medicines, semi-finished traditional Chinese medicines, and medicinal plants.

[0051] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in connection with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in connection with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this disclosure as set forth by the appended claims.

Claims

1. An automated liquid dispensing needle cleaning device, characterized in that, include: A cleaning seat, comprising a first cleaning channel, a second cleaning channel, and a drain channel. The first cleaning channel is used to clean the outer wall of the injection needle. The second cleaning channel is used to clean the inner wall of the injection needle. The drainage channel is used to discharge the waste liquid after cleaning. The first cleaning channel and the second cleaning channel are separated by a space, the second cleaning channel is connected to the drain channel, and the first cleaning channel and the second cleaning channel share the drain channel.

2. The automated liquid dispensing needle cleaning device according to claim 1, characterized in that, One end of the first cleaning channel has a first inlet for inserting a liquid injection needle, and the other end is closed. One end of the second cleaning channel has a second inlet for inserting a liquid injection needle, and the other end is connected to the drainage channel. The first entrance is connected to the second entrance.

3. The automated liquid dispensing needle cleaning device according to claim 1, characterized in that, The cleaning seat is a rectangular block structure, and the first cleaning channel and the second cleaning channel are vertically arranged in the cleaning seat.

4. The automated liquid dispensing needle cleaning device according to claim 3, characterized in that, The drainage channel is located below the second cleaning channel, and the angle between the drainage channel and the second cleaning channel is equal to or greater than 90 degrees.

5. The automated liquid dispensing needle cleaning device according to claim 1, characterized in that, The depth of the second cleaning channel is equal to or less than the depth of the first cleaning channel.

6. The automated liquid dispensing needle cleaning device according to claim 1, characterized in that, The drainage channel has a drainage port, which is connected to a waste liquid bottle.

7. The automated liquid dispensing needle cleaning device according to claim 2, characterized in that, A first connecting channel is provided between the first inlet and the second inlet, so that the cleaning fluid flows from the first cleaning channel to the second cleaning channel.

8. The automated liquid dispensing needle cleaning device according to claim 7, characterized in that, The first connecting channel is disposed inside the cleaning seat, a first inclined surface is formed from the first inlet to the top surface of the cleaning seat, a second inclined surface is formed from the second inlet to the top surface of the cleaning seat, and a second connecting channel is formed between the first inclined surface and the second inclined surface.

9. The automated liquid dispensing needle cleaning device according to claim 7 or 8, characterized in that, The first connecting channel is either straight or curved, and the second connecting channel is either straight or curved.

10. The automated liquid dispensing needle cleaning device according to claim 2, characterized in that, The height of the second inlet is lower than the height of the first inlet.

11. The automated liquid dispensing needle cleaning device according to claim 1, characterized in that, The automated liquid dosing needle cleaning device also includes a drain pump to assist in discharging waste liquid from the drain channel.

12. The automated liquid dispensing needle cleaning device according to claim 1, characterized in that, The cleaning seat is provided with multiple sets of first cleaning channels and second cleaning channels, and the multiple sets of first cleaning channels and second cleaning channels share the same drainage channel.

13. The automated liquid dispensing needle cleaning device according to claim 11, characterized in that, Multiple sets of first and second cleaning channels are arranged at certain intervals along the long side of the cleaning seat, and the drain channel extends along the long side of the cleaning seat.

14. The automated liquid dispensing needle cleaning device according to claim 1, characterized in that, The cross-sections of the first and second cleaning channels are circular, triangular, square, or other irregular shapes, and the cross-sectional areas of the first and second cleaning channels are larger than the cross-sectional area of ​​the liquid injection needle.

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