A cleaning device for a pipetting tool

Abstract

The utility model relates to equipment cleaning technical field especially relates to a kind of cleaning device of pipetting tool, comprising: shell, cleaning tank, processing component and heating component;Cleaning tank is set to the outside of shell, for placing pipetting tool, cleaning solution in cleaning tank is under the pressure of cleaning pipetting tool;Processing component is set to the inside of shell, and it is communicated with cleaning tank, for selectively intercepting impurity molecule in cleaning solution, after purification, cleaning solution is circulated and delivered to cleaning tank, continue to be used for cleaning pipetting tool;Heating component is set to the inside of shell, for after the cleaning solution in the cleaning tank is discharged, heating cleaning solution remaining in pipetting tool to completely remove cleaning solution.The above technical scheme can be combined with selective interception technology and evaporation technology, high-boiling-point impurities are intercepted, low-boiling-point impurities in permeated cleaning solution are removed by evaporation, cleaning effect is improved, and the purpose of thorough cleaning is achieved.

Description

Technical Field

[0001] This utility model relates to the field of equipment cleaning technology, and in particular to a cleaning device for pipetting tools. Background Technology

[0002] Pipettes, including syringes and pipettes, are widely used in medical, laboratory, and industrial fields. Especially in standard liquid preparation experiments, the use of pipettes is a critical step, and the cleanliness of the pipettes (whether there are other impurities that may affect the experimental results) directly affects the accuracy of the experimental results and the purity of the product.

[0003] Currently, the main cleaning methods for pipetting instruments include manual cleaning, ultrasonic cleaning, and automated equipment cleaning. While manual cleaning is inexpensive, it is inefficient and prone to missing hard-to-reach areas. Although ultrasonic cleaning can remove impurities from the pipetting instruments using ultrasound, these impurities still remain in the cleaning solution. Therefore, the above cleaning methods still suffer from incomplete cleaning and poor cleaning results. Summary of the Invention

[0004] This utility model provides a cleaning device for pipetting tools, which can improve the cleaning effect of pipetting tools and achieve the purpose of thorough cleaning, including: a housing, a cleaning tank, a processing component and a heating component; The cleaning tank is located outside the housing and is used to hold the pipetting tool. The cleaning solution in the cleaning tank cleans the pipetting tool under pressure. The processing component is disposed inside the housing and communicates with the cleaning tank. It is used to selectively trap impurity molecules in the cleaning solution and circulate the purified cleaning solution back to the cleaning tank for further cleaning of the pipetting tool. The heating component is disposed inside the housing and is used to heat the residual cleaning fluid in the pipetting tool after the cleaning fluid in the cleaning tank has been discharged, so as to completely remove the cleaning fluid.

[0005] The present invention provides a cleaning device for pipetting tools, which combines selective retention technology with heating evaporation technology to retain impurities with high boiling points in the cleaning solution, while impurities with low boiling points permeate out and are then removed by evaporation after heating to the boiling point. This achieves a thorough cleaning effect and improves the degree of cleanliness. At the same time, the cleaning solution is recycled for cleaning, which effectively avoids waste of the cleaning solution. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 A schematic diagram of a cleaning device for pipetting tools provided in an embodiment of this utility model; Figure 2 According to Figure 1 A structural block diagram of a processing component is shown; Figure 3 According to Figure 1 The diagram shows a cleaning tank in its open state. Figure 4 According to Figure 1 The diagram shows a structural schematic of a cleaning tank in a closed state. Figure 5 According to Figure 1 A schematic diagram of the structure of the bottom of a cleaning tank is shown; Figure 6 According to Figure 1 The diagram shows a structural schematic of a liquid collection tank; Figure 7 According to Figure 1 A schematic diagram of the housing of a cleaning device for a pipetting tool is shown.

[0008] Figure label: 1-Cleaning tank; 11-tooth-shaped structure; 12 - Cleaning fluid inlet; 13- Cleaning fluid outlet; 14 - Air inlet; 2-Collection tank; 21-Staff; 22-Drain port; 3-Waste liquid tank; 4-Shell; 41 - First connecting port; 42 - Second connecting port; 43 - Third connecting port; 44 - Fourth connecting port; 45 - Fifth connecting port; 46 - Sixth connecting port; 47-Connecting plate; 5-Pipette tools; 61 - Reverse osmosis unit; 62-Adsorption unit; 63 - Filter unit. Detailed Implementation

[0009] The solution provided by this utility model will now be described with reference to the accompanying drawings.

[0010] Figure 1 This is a schematic diagram of the structure of a cleaning device for pipetting tools provided in an embodiment of the present invention, as shown below. Figure 1 As shown, it includes: a housing 4, a cleaning tank 1, a processing component (not shown in the figure), and a heating component (not shown in the figure); the cleaning tank 1 is located outside the housing 4 and is used to place the pipetting tool 5. The cleaning solution in the cleaning tank 1 cleans the pipetting tool 5 under pressure; the processing component is located inside the housing 4 and is connected to the cleaning tank 1. It is used to selectively trap impurity molecules in the cleaning solution and circulate the purified cleaning solution back to the cleaning tank 1 for further cleaning of the pipetting tool 5; the heating component is located inside the housing 4 and is used to heat the remaining cleaning solution in the pipetting tool 5 after the cleaning solution in the cleaning tank 1 has been discharged to completely remove the cleaning solution.

[0011] In this embodiment, the present invention provides a cleaning device combining selective retention technology and heating evaporation technology. During the cleaning process, the cleaning solution in the cleaning tank 1 cleans the pipetting tool 5 under pressure. The cleaned cleaning solution flows into the processing component, where a semi-permeable membrane selectively retains impurity molecules, retaining those with higher boiling points. Impurities with lower boiling points in the remaining permeate can be removed by evaporation heating. The purified cleaning solution in the processing component is recycled and flows back into the cleaning tank 1 to clean the pipetting tool 5. This cycle is repeated for 1-2 hours (the cycle time can be adjusted according to the cleaning effect). The cleaning solution in the cleaning tank 1 is then drained. The heating component heats the pipetting tool 5 in the cleaning tank 1 until the temperature reaches the boiling point of the residual organic matter, evaporating and removing the residual organic matter, thus thoroughly cleaning the pipetting tool 5, improving the cleaning effect, and saving cleaning solution.

[0012] It should be noted that if the impurities to be removed in the pipette 5 are organic substances, an organic cleaning solution, preferably ethanol, should be used; if the impurities to be removed are inorganic substances, an inorganic cleaning solution, preferably pure water, should be used.

[0013] In one embodiment of the present invention, the cleaning device further includes: a liquid receiving tank 2; the liquid receiving tank 2 is disposed outside the housing 4 and is connected to the cleaning tank 1 and the processing component respectively, for receiving the cleaning liquid flowing into the liquid receiving tank 2 through the pipetting tool 5, and transporting the cleaning liquid to the processing component.

[0014] In this embodiment, the liquid collection tank 2 is connected to the cleaning tank 1 and the processing component. During the cleaning process, the cleaning liquid is poured into the liquid collection tank 2 and flows into the processing component through the liquid collection tank 2. The cleaning liquid in the processing component is recycled and flows back into the cleaning tank 1 to clean the pipetting tool 5. The cleaning liquid after cleaning flows into the liquid collection tank 2 and the processing component in sequence for selective retention, so as to realize the cyclic cleaning process.

[0015] In one embodiment of this utility model, the liquid collection tank 2 is an inverted frustum structure, and the lower surface of the inverted frustum structure is connected to the housing 4 of the cleaning device. Figure 7 The fourth connector 44 in the middle.

[0016] In this embodiment, as Figure 6 As shown, the liquid collection tank 2 adopts a conical structure, which facilitates the discharge of liquid from the bottom drain port 22 to the cleaning liquid inlet of the reverse osmosis unit 61.

[0017] In one embodiment of the present invention, the cleaning device further includes a waste liquid tank 3, which is disposed inside the housing 4 and communicates with the processing component to receive impurity molecules selectively retained by the processing component.

[0018] In this embodiment, the semi-permeable membrane in the processing component selectively traps impurity molecules, trapping impurity molecules with higher boiling points and collecting them into the waste liquid tank 3.

[0019] like Figure 7 As shown, the housing 4 of the cleaning device in this utility model can be designed as a box-type structure, with the cleaning tank 1, the liquid collection tank 2, and the waste liquid tank 3 arranged on the housing. Figure 1 The processing and heating components, not shown, are integrated inside the housing.

[0020] In one embodiment of this utility model, the processing assembly includes: a reverse osmosis unit 61, an adsorption unit 62, and a filtration unit 63; as shown Figure 2 As shown, the cleaning liquid inlet of the reverse osmosis unit 61 is connected to the liquid collection tank 2, and the intercepting liquid outlet is connected to the waste liquid tank 3; the adsorption liquid inlet of the adsorption unit 62 is connected to the permeate outlet of the reverse osmosis unit 61; the filtration liquid inlet of the filtration unit 63 is connected to the adsorption purification liquid outlet of the adsorption unit 62, and the filtration purification liquid outlet is connected to the cleaning tank 1.

[0021] In this embodiment, a small amount of impurities usually remain in the cleaning solution after treatment by the reverse osmosis unit 61. Therefore, an adsorption unit 62 is added after the reverse osmosis unit 61 to further adsorb and remove the impurities that were not completely removed in the reverse osmosis unit 61. A filtration unit 63 is added after the adsorption unit 62 to filter out any impurities that leaked from the adsorption unit 62, allowing the treated cleaning solution to be directly used in the circulating cleaning process. Preferably, the reverse osmosis unit 61 is a reverse osmosis membrane, the adsorption unit 62 is activated carbon (or a molecular sieve or other material that can adsorb impurities), and the filtration unit 63 is a polypropylene filter element (or other membrane materials with filtration functions).

[0022] Taking organic cleaning solution as an example, the pressure difference between cleaning tank 1 and collection tank 2 serves as the driving force. The cleaning solution flows from collection tank 2 into reverse osmosis unit 61 through the cleaning solution inlet. After selective retention by the semi-permeable membrane, organic matter with a molecular weight greater than 100 Daltons is retained. The retained organic matter flows into waste liquid tank 3 through the effluent outlet. Considering that the maximum removal rate of the reverse osmosis membrane is about 99%, an adsorption unit 62 and a filtration unit 63 are added after the reverse osmosis unit 61. The permeate retained in the reverse osmosis unit 61 flows into adsorption unit 62 through the permeate outlet, where activated carbon further adsorbs impurity molecules. The adsorbed impurities flow into filtration unit 63 through the adsorption purification outlet, where a polypropylene filter removes any adsorbed organic impurities. Finally, the purified cleaning solution flows into cleaning tank 1 through the filtration purification outlet for recycling. Thus, the processing components can effectively remove organic impurities with a molecular weight greater than 100 Daltons. Among the remaining organic compounds with a molecular weight less than or equal to 100 Daltons, the one with the highest boiling point is acetic acid (boiling point of 117.9℃). These organic compounds can be removed by evaporation after heating to 120℃.

[0023] In one embodiment of this utility model, such as Figures 3-4 As shown, one end of the cleaning tank 1 is hinged, and the other end is provided with an openable toothed structure 11; the pipetting tool 5 includes a pushing structure and a syringe structure. The pushing structure is placed in the cleaning tank 1, and the syringe structure is engaged with the toothed structure 11, connecting the cleaning tank 1 and the receiving tank 2.

[0024] In this embodiment, the shape of the cleaning tank 1 is inspired by an alligator's mouth. One end is connected by a hinge, and the other end is an openable toothed structure 11 that can be opened and closed. The opening and closing part can fit the syringe structure, so that the syringe structure is locked at the round hole (i.e., at the toothed structure). After the cleaning tank 1 is closed, it is in a sealed state. The liquid or gas inside the cleaning tank 1 is discharged into the liquid collection tank 2 through the syringe structure of the pipetting tool 5.

[0025] In one embodiment of this utility model, a support 21 is provided on the liquid receiving tank 2, and the support 21 corresponds one-to-one with the toothed structure 11, which is used to place the end interface of the syringe structure.

[0026] In this embodiment, as Figure 6 As shown, the support 21 in the collection tank 2 and the toothed structure 11 in the cleaning tank 1 are used together to place the syringe structure. The end interface of the syringe structure extends into the collection tank 2, and the cleaning fluid flows into the collection tank 2 from the end structure. It can be understood that the pipetting tool 5 includes pipettes, syringes, etc. When the pipetting tool 5 is a pipette, the pipette tip is engaged with the support; when the pipetting tool 5 is a syringe, the syringe needle is engaged with the support.

[0027] In one embodiment of the present invention, the device further includes: a storage tank (not shown in the figure); the bottom 1 of the cleaning tank is provided with a cleaning liquid inlet 12, a cleaning liquid outlet 13 and an air inlet 14, the storage tank is connected to the cleaning liquid outlet 13, and the cleaning liquid inlet 12 is connected to the filtered and purified liquid outlet.

[0028] In this embodiment, as Figure 5 As shown, the bottom of the cleaning tank 1 is equipped with a cleaning fluid inlet 12, a cleaning fluid outlet 13, and an air inlet 14. The cleaning fluid purified by the treatment components enters the cleaning tank 1 through the cleaning fluid inlet 12, and the cleaning fluid after the circulation cleaning is completed flows into the storage tank through the cleaning fluid outlet 13. The air inlet 14 is connected to the heating components.

[0029] In one embodiment of the present invention, the heating component includes a hot air blower, and the air outlet of the hot air blower is connected to the air inlet 14.

[0030] In this embodiment, the heating component can be a hot air blower, or a combination of a sampling blower and a heating tube. The heating tube further heats the residual impurities on the pipette tool 5 within the cleaning tank 1. The hot air blower's outlet is connected to the inlet 14. The residual impurities in the pipette tool 5 are removed by being heated to their boiling point and then carried out of the device by the hot airflow. Hot air is continuously blown into the cleaning tank 1 for 30-60 minutes; the specific time can be adjusted according to the cleaning effect. During evaporation, the temperature can be controlled within the range of 80-130℃, which can be adjusted according to the composition of the impurity residue to be removed.

[0031] Furthermore, valves can be installed at the cleaning fluid inlet 12, cleaning fluid outlet 13, and air inlet 14. The purified cleaning fluid in the treatment component enters the cleaning tank 1 through the cleaning fluid inlet 12. After the circulation cleaning is completed, the valve at the cleaning fluid inlet 12 closes, and the valve at the cleaning fluid outlet 13 opens, allowing the cleaning fluid to drain into the storage tank. Once the cleaning fluid in the cleaning tank 1 is emptied, the valve closes. The valve at the air inlet 14 opens, and the heating component heats the residual impurities to their boiling point before blowing them out of the device. The valve closes, completing the cleaning process. These valves can be centrally controlled by a control system. The control system can also control the heating temperature of the heating component, the time of hot air blowing, the circulation cleaning time, and the operating status of the pump (which can be used to pump the cleaning fluid from the collection tank 2 into the treatment component), achieving fully automatic cleaning. Additionally, as... Figure 7 As shown, the housing 4 is provided with a first connecting port 41 corresponding to the cleaning liquid inlet 12, a second connecting port 42 corresponding to the cleaning liquid outlet 13, a third connecting port 43 corresponding to the air inlet 14, a fourth connecting port 44 corresponding to the drain port 22 of the liquid collection tank 2 (used to connect the drain port 22 of the liquid collection tank 2 and the cleaning liquid inlet of the reverse osmosis unit 61), a fifth connecting port 45 corresponding to the inlet of the waste liquid tank 3, and a sixth connecting port 46 corresponding to the waste liquid outlet of the waste liquid tank 3.

[0032] In one embodiment of this utility model, a spray pipe is provided in the cleaning tank 1 for spraying the outer wall of the syringe structure.

[0033] In this embodiment, a spray pipe can be extended from the cleaning tank 1 to spray and clean the outer wall of the syringe or pipette. The cleaning solution after spraying and cleaning flows back into the receiving tank 2. At this time, the lower section of the perforated plate on the back of the receiving tank 2 can be left unsealed, forming a whole with the connecting plate 47 on the housing 4 that connects the cleaning tank 1 and the receiving tank 2, thus expanding the receiving surface of the receiving tank 2. Figure 7 As shown, the housing 4 is provided with a connecting plate 47 for connecting the cleaning tank 1 and the liquid collection tank 2.

[0034] In summary, the cleaning device for pipetting tools according to the embodiments of this utility model has the following beneficial effects: By combining selective retention technology with evaporation technology, high-boiling-point impurities in the cleaning solution are retained, while low-boiling-point impurities permeate out and are then removed by evaporation, achieving a thorough cleaning effect and improving the cleaning degree. The cleaning solution purified by the treatment components is then recycled back into the cleaning tank, effectively avoiding waste of the cleaning solution.

[0035] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is used only to illustrate the technical solution of this utility model, and is not intended to limit the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the protection scope of this utility model.

Claims

1. A cleaning device for pipetting tools, characterized in that, include: Housing, cleaning tank, processing components, and heating components; The cleaning tank is located outside the housing and is used to hold the pipetting tool. The cleaning solution in the cleaning tank cleans the pipetting tool under pressure. The processing component is disposed inside the housing and communicates with the cleaning tank. It is used to selectively trap impurity molecules in the cleaning solution and circulate the purified cleaning solution back to the cleaning tank for further cleaning of the pipetting tool. The heating component is disposed inside the housing and is used to heat the residual cleaning fluid in the pipetting tool after the cleaning fluid in the cleaning tank has been discharged, so as to completely remove the cleaning fluid.

2. The cleaning device for pipetting tools according to claim 1, characterized in that, The cleaning device further includes: a liquid collection tank; The liquid receiving tank is located outside the housing and is connected to the cleaning tank and the processing assembly, respectively. It is used to receive the cleaning liquid flowing into the liquid receiving tank through the pipetting tool and to transport the cleaning liquid to the processing assembly.

3. The cleaning device for pipetting tools according to claim 2, characterized in that, The cleaning device further includes a waste liquid tank, which is disposed inside the housing and communicates with the processing component, for receiving impurity molecules selectively retained by the processing component.

4. The cleaning device for pipetting tools according to claim 3, characterized in that, The processing components include: a reverse osmosis unit, an adsorption unit, and a filtration unit; The cleaning liquid inlet of the reverse osmosis unit is connected to the liquid collection tank, and the intercepting liquid outlet is connected to the waste liquid tank. The adsorption inlet of the adsorption unit is connected to the permeate outlet of the reverse osmosis unit. The filtration unit's inlet is connected to the adsorption purification liquid outlet of the adsorption unit, and the filtration purification liquid outlet is connected to the cleaning tank.

5. The cleaning device for pipetting tools according to claim 4, characterized in that, The cleaning tank has a hinged connection at one end and an openable toothed structure at the other end. The pipetting tool includes a pushing structure and a syringe structure. The pushing structure is placed in the cleaning tank, and the syringe structure is engaged with the toothed structure, connecting the cleaning tank and the receiving tank.

6. The cleaning device for pipetting tools according to claim 5, characterized in that, The liquid collection tank is equipped with a bracket, which corresponds one-to-one with the toothed structure and is used to place the end interface of the syringe structure.

7. The cleaning device for pipetting tools according to claim 6, characterized in that, The device further includes: a storage tank; The bottom of the cleaning tank is provided with a cleaning liquid inlet, a cleaning liquid outlet, and an air inlet. The storage tank is connected to the cleaning liquid outlet, and the cleaning liquid inlet is connected to the filtered and purified liquid outlet.

8. The cleaning device for pipetting tools according to claim 7, characterized in that, The heating component includes a hot air blower, and the air outlet of the hot air blower is connected to the air inlet.

9. The cleaning device for pipetting tools according to claim 4, characterized in that, The reverse osmosis unit is a reverse osmosis membrane, the adsorption unit is activated carbon, and the filtration unit is a polypropylene filter element.

10. The cleaning device for pipetting tools according to claim 5, characterized in that, The cleaning tank is equipped with a spray pipe for spraying the outer wall of the syringe structure.

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