Sampling needle cleaning station and sampling needle cleaning system

Abstract

The utility model discloses a sampling needle cleaning station and a sampling needle cleaning system.The sampling needle cleaning station comprises a cleaning station body with a cleaning groove, the cleaning station body is provided with an inlet and outlet groove, the third side wall of the cleaning station body is provided with a first cleaning hole, and the fourth side wall of the cleaning station body is provided with a second cleaning hole; the liquid outlets of the first cleaning hole and the second cleaning hole are both higher than the bottom end of the inlet and outlet groove. The inlet and outlet grooves are formed in the pair of side walls of the cleaning station body, sampling needles can directly enter the cleaning station body from the inlet and outlet grooves in the cleaning process and leave from the inlet and outlet grooves in the opposite side after cleaning, the cleaning action is simplified, and the cleaning efficiency is improved; liquid outlets of the two cleaning holes are staggered up and down, and based on the principle of cylindrical streaming in the cleaning process, the coverage range of cleaning liquid flushing envelope is expanded, the problems of large flow and low efficiency caused by hedging in the existing cleaning process are solved, and the high-speed detection requirement of a high-throughput biochemical analyzer is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the sampling needle cleaning field of biochemical analyzer, especially a sampling needle cleaning station and a sampling needle cleaning system. BACKGROUND

[0002] During the automatic or semi-automatic operation of the biochemical analysis equipment, high-frequency sampling and reagent suction actions are often accompanied, and the inner wall and outer wall of the sampling needle need to be cleaned after sampling to avoid cross contamination caused by samples or reagents. The cleaning system is an essential part of the biochemical analysis equipment. The existing cleaning system is mostly an open-top cleaning tank. The liquid inlet hole at the upper part of the cleaning tank is a bidirectional opposing single-washing type. The outer cleaning of the sampling needle can be realized by injecting cleaning liquid into the liquid inlet hole. The entire cleaning process is completed in the cleaning tank. The cleaning efficiency of the outer wall of the sampling needle is low, and the cleaning liquid consumption is large, which cannot meet the high-speed detection requirements of high-throughput fully-automatic biochemical analysis equipment. SUMMARY

[0003] Therefore, the first purpose of the utility model is to provide a sampling needle cleaning station, and the second purpose of the utility model is to provide a sampling needle cleaning system.

[0004] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0005] The sampling needle cleaning station comprises a cleaning tank, a pair of side walls of the cleaning tank, a first cleaning hole in the third side wall of the cleaning tank, a second cleaning hole in the fourth side wall of the cleaning tank, a liquid outlet of the first cleaning hole and the second cleaning hole, and a liquid outlet of the first cleaning hole and the second cleaning hole.

[0006] The utility model has the advantages that the utility model opens the inlet and outlet grooves in the pair of side walls of the cleaning tank. During the cleaning process, the sampling needle can directly enter the cleaning tank from the inlet and outlet grooves, and then leave from the opposite inlet and outlet grooves after cleaning. The cleaning action is simplified, and the cleaning efficiency is improved. The liquid outlets of the two cleaning holes are arranged in an up-down staggered manner. During the cleaning process, based on the principle of "cylindrical flow", the coverage range of the cleaning liquid washing envelope is expanded. The problem of large flow and low efficiency caused by the existing cleaning opposing is overcome. The cleaning liquid consumption can be saved by more than 40%, and the cleaning time can be shortened by more than 50%. The high-speed detection requirements of high-throughput biochemical analysis equipment are met.

[0007] In a preferred embodiment of this invention, the diameters of both the first and second cleaning holes are greater than or equal to the outer diameter of the sampling needle, ensuring the coverage of the rinsing envelope.

[0008] In a preferred embodiment of this invention, the outlet of the first cleaning hole is located above the outlet of the second cleaning hole, and the height of the inlet of the first cleaning hole is higher than the height of the inlet of the second cleaning hole. The height from the intersection F1 of the central axis of the first cleaning hole and the third sidewall to the top of the washing station body is H1, and the height from the intersection F2 of the central axis of the second cleaning hole and the fourth sidewall to the top of the washing station body is H2, where H2 ≥ H1 + the outer diameter of the sampling needle. The beneficial effect is that this invention, through reasonable design of the two cleaning holes, minimizes interference between the upper cleaning hole and the lower cleaning hole while maximizing the rinsing envelope.

[0009] The first and second cleaning holes are horizontally positioned or inclined downwards from the outside in. The angle between the central axis of the first cleaning hole and the horizontal plane is θ1, and the angle between the central axis of the second cleaning hole and the horizontal plane is θ2. Both θ1 and θ2 are greater than or equal to 0° and less than 60°. The angle δ between the projections of the central axes of the first and second cleaning holes onto the horizontal plane satisfies the following relationship: 0°≤δ≤45°. More preferably, the first and second cleaning holes are inclined holes.

[0010] In a preferred embodiment of this invention, the third and fourth sidewalls are arranged opposite to each other, with the middle portions of both sides protruding in opposite directions. The cleaning tank is wide at both ends and narrow in the middle. The first cleaning hole is located in the middle of the third sidewall, and the second cleaning hole is located in the middle of the fourth sidewall. This ensures that the washing liquid from the two cleaning holes provides a large-envelope cleaning of the sampling needle while also maintaining the capacity of the cleaning station itself.

[0011] In a preferred embodiment of the present invention, at least one fixing block with mounting holes is provided on the outer side of the washing station body, and the present invention is fixed on the analytical instrument by the fixing block, which makes installation convenient.

[0012] In a preferred embodiment of this utility model, the bottom wall of the cleaning tank extends downward at an angle from the lower part of the inner side of the washing station body to the drain hole, that is, the bottom wall of the cleaning tank is high at both ends and low in the middle, which facilitates the flow of cleaning liquid and avoids cleaning liquid residue as much as possible.

[0013] This utility model also provides a sampling needle cleaning system, including a cleaning pump, a waste liquid pump, and a sampling needle cleaning station. The sampling needle cleaning station includes a station body with a cleaning tank. One pair of side walls of the station body are provided with inlet and outlet slots for the sampling needle to pass through, and the bottom of the inlet and outlet slots is higher than the bottom wall of the cleaning tank. A first cleaning hole is provided on the third side wall of the station body, and a second cleaning hole is provided on the fourth side wall of the station body. The first cleaning hole and the second cleaning hole are arranged opposite each other, and the outlet heights of the first cleaning hole and the second cleaning hole are staggered vertically. The outlets of the first cleaning hole and the second cleaning hole are both higher than the bottom of the inlet and outlet slots. A drain hole communicating with the cleaning tank is provided at the bottom or lower part of the station body.

[0014] Compared with the prior art, the advantages of this utility model are as follows: This utility model has inlet and outlet slots on a pair of side walls of the washing station body. During the washing process, the sampling needle can directly enter the washing station body from the inlet and outlet slots and leave from the opposite inlet and outlet slot after washing. There is no need to perform lifting and lowering actions during the washing process, thereby simplifying the washing steps and improving the washing efficiency. The outlets of the two washing holes of this utility model are staggered vertically. Based on the principle of "cylindrical flow", the coverage of the washing liquid rinsing envelope is expanded during the washing process. This overcomes the problem of large flow and low efficiency caused by the counter-flushing in the existing washing process. The washing liquid consumption can be reduced by more than 40%, and the washing time can be shortened by more than 50%, thereby meeting the high-speed detection requirements of high-throughput biochemical analyzers. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0016] Figure 2 This is a diagram showing the tilt angles of the first and second cleaning holes in Implementation Method 1.

[0017] Figure 3 This is a top view of implementation method one.

[0018] Figure 4 yes Figure 3 The main view.

[0019] Figure 5 This is a schematic diagram of Embodiment 2 of this utility model.

[0020] Figure 6 This is a schematic diagram of the sampling needle cleaning system of this utility model. Detailed Implementation

[0021] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0022] It should be noted that in the description of this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-4 As shown, this utility model proposes a sampling needle cleaning station, including a station body with a cleaning tank 1. A pair of side walls of the station body are provided with inlet / outlet grooves 3 for the sampling needle 2 to pass through, the bottom of which is higher than the bottom wall of the cleaning tank 1. A first cleaning hole 4 is provided on the third side wall of the station body, and a second cleaning hole 5 is provided on the fourth side wall. The first and second cleaning holes 4 and 5 are arranged opposite each other, with their outlets staggered vertically. Both outlets are higher than the bottom of the inlet / outlet grooves 3. A drain hole 6 communicating with the cleaning tank 1 is provided at the bottom or lower part of the station body. This invention features inlet / outlet slots 3 on a pair of side walls of the washing station body. During the washing process, the sampling needle 2 can directly enter the washing station body through the inlet / outlet slots 3 and exit through the opposite inlet / outlet slot 3 after washing, simplifying the washing action and improving the washing efficiency. The outlets of the two washing holes of this invention are staggered vertically. Based on the principle of "cylindrical flow" during the washing process, the coverage of the washing liquid rinsing envelope is expanded, the washing liquid flow rate is reduced, and the washing efficiency is improved to meet the high-speed detection requirements of high-throughput biochemical analyzers.

[0025] In actual processing, the diameters of both the first cleaning hole 4 and the second cleaning hole 5 are greater than or equal to the outer diameter d of the sampling needle 2, in order to maximize the coverage of the rinsing envelope; combined with Figure 1It can be seen that the outlet of the first cleaning hole 4 is located above the outlet of the second cleaning hole 5, and the height of the inlet of the first cleaning hole 4 is higher than the height of the inlet of the second cleaning hole 5. Specifically, the height from the intersection F1 of the central axis of the first cleaning hole 4 and the third side wall to the top of the washing station body is H1, and the height from the intersection F2 of the central axis of the second cleaning hole 5 and the fourth side wall to the top of the washing station body is H2, where H2 ≥ H1 + the outer diameter of the sampling needle 2. This invention, through a reasonable design of the opening position, diameter, and outlet height of the two cleaning holes, minimizes the interference of the upper cleaning hole on the lower cleaning hole while ensuring the maximum flushing envelope as much as possible.

[0026] In actual processing, both the first cleaning hole 4 and the second cleaning hole 5 are inclined holes, with the two cleaning holes inclined downwards from the outside in. The angle between the central axis of the first cleaning hole 4 and the horizontal plane is θ1, and the angle between the central axis of the second cleaning hole 5 and the horizontal plane is θ2, with both θ1 and θ2 being less than 60° to ensure the rinsing envelope. Of course, in actual processing, the first cleaning hole 4 and the second cleaning hole 5 can also be horizontally opened, satisfying H2≥H1+d to avoid mutual interference. This utility model is based on the principle of "cylindrical flow", which expands the coverage range of the rinsing envelope of the cleaning fluid, overcomes the problem of large flow and low efficiency caused by counter-flushing in existing cleaning methods, saves more than 40% of the washing fluid consumption, and shortens the cleaning time by more than 50%, thereby meeting the high-speed detection requirements of high-throughput biochemical analyzers.

[0027] In actual processing, the angle δ between the projections of the central axis of the first cleaning hole 4 and the central axis of the second cleaning hole 5 onto the horizontal plane satisfies the following relationship: 0°≤δ≤45°. That is, the projections of the first cleaning hole 4 and the second cleaning hole 5 onto the horizontal plane can be straight holes or oblique holes to reduce interference between the two holes. See [link to relevant documentation]. Figure 3 .

[0028] In a preferred embodiment of this utility model, the bottom wall of the cleaning tank 1 extends downward from the lower part of the inner side of the washing station body to the drain hole 6. That is, the bottom wall of the cleaning tank 1 is high at both ends and low in the middle, which facilitates the flow of cleaning liquid and avoids cleaning liquid residue as much as possible.

[0029] In other embodiments of this utility model, the third and fourth sidewalls may also be adopted as follows: Figure 5 The structure shown has the middle portions of both the third and fourth sidewalls protruding in opposite directions, making the cleaning tank 1 wider at both ends and narrower in the middle. The first cleaning hole 4 is located in the middle of the third sidewall, and the second cleaning hole 5 is located in the middle of the fourth sidewall. This not only ensures large-envelope cleaning of the sampling needle 2 but also guarantees the capacity of the cleaning station itself. See Figure 5 .

[0030] In other embodiments of this utility model, combined withFigure 5 It can be seen that the outer surface of the washing station body is equipped with fixing blocks 9 with mounting holes, which are used to fix the instrument to the analyzer, making installation convenient. The fixing blocks 9 can be arranged on opposite sides, one above the other, or there can be only one, which can be flexibly determined according to the installation position.

[0031] Combination Figure 6 It is understood that this utility model also proposes a sampling needle cleaning system, including a cleaning pump P1, a waste liquid pump P2, and a sampling needle 2 cleaning station. The sampling needle 2 cleaning station adopts the sampling needle 2 cleaning station in any of the above embodiments. The washing liquid container 7 (containing purified water or other cleaning liquid) is connected to the first cleaning hole 4 and the second cleaning hole 5 respectively through the cleaning pipeline. The cleaning pump P1 is installed on the cleaning pipeline. The drain hole 6 at the bottom of the sampling needle cleaning station is connected to the waste liquid container 8 through the waste liquid pipeline. The waste liquid pump P2 is installed on the waste liquid pipeline. When cleaning is required, the sampling needle 2 enters the cleaning tank 1 from the inlet / outlet tank 3. After the cleaning pump P1 is started, it pumps the cleaning liquid to the first cleaning hole 4 and the second cleaning hole 5. The cleaning liquid flows out from the first and second cleaning liquids to form a large flushing envelope to flush the outer wall of the sampling needle 2. After cleaning, the sampling needle 2 is removed from the inlet / outlet tank 3. During the cleaning process, the waste liquid pump P2 is started to pump the waste liquid generated during cleaning into the waste liquid container 8.

[0032] This invention features inlet / outlet slots 3 on a pair of side walls of the washing station body. During the washing process, the sampling needle 2 can directly enter the washing station body through the inlet / outlet slots 3 and leave through the inlet / outlet slots 3 on the opposite side after washing. No lifting or lowering action is required during the washing process, thereby simplifying the washing steps and improving the washing efficiency.

[0033] Finally, it should be emphasized that the above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sampling needle cleaning station, comprising a station body with a cleaning tank, characterized in that: The washing station body has inlet and outlet slots on one pair of side walls for the sampling needle to pass through, and the bottom of the inlet and outlet slots is higher than the bottom wall of the washing tank; a first cleaning hole is provided on the third side wall of the washing station body, and a second cleaning hole is provided on the fourth side wall of the washing station body. The first cleaning hole and the second cleaning hole are arranged opposite each other, and the outlets of the first cleaning hole and the second cleaning hole are staggered vertically, and the outlets of the first cleaning hole and the second cleaning hole are both higher than the bottom of the inlet and outlet slots; a drain hole communicating with the washing tank is provided at the bottom or lower part of the washing station body.

2. The sampling needle cleaning station according to claim 1, characterized in that: The diameters of both the first and second cleaning holes are greater than or equal to the outer diameter of the sampling needle.

3. The sampling needle cleaning station according to claim 1, characterized in that: The outlet of the first cleaning hole is located above the outlet of the second cleaning hole, and the height of the inlet of the first cleaning hole is higher than the height of the inlet of the second cleaning hole; wherein, the height from the intersection point F1 of the central axis of the first cleaning hole and the third side wall to the top of the washing station body is H1, and the height from the intersection point F2 of the central axis of the second cleaning hole and the fourth side wall to the top of the washing station body is H2, and H2≥H1+sampling needle outer diameter.

4. The sampling needle cleaning station according to claim 3, characterized in that: The first and second cleaning holes are horizontally opened or inclined downward from the outside to the inside. The angle between the central axis of the first cleaning hole and the horizontal plane is θ1, and the angle between the central axis of the second cleaning hole and the horizontal plane is θ2. Both θ1 and θ2 are greater than or equal to 0° and both θ1 and θ2 are less than 60°. The angle δ between the projections of the central axes of the first and second cleaning holes onto the horizontal plane satisfies the following relationship: 0°≤δ≤45°.

5. The sampling needle cleaning station according to claim 4, characterized in that: Both the first cleaning hole and the second cleaning hole are inclined.

6. The sampling needle cleaning station according to claim 1, characterized in that: The middle portions of the third and fourth sidewalls both protrude in opposite directions.

7. The sampling needle cleaning station according to claim 1, characterized in that: The outer side of the washing station body is provided with at least one fixing block with mounting holes.

8. The sampling needle cleaning station according to claim 1, characterized in that: The bottom wall of the cleaning tank extends downwards from the lower part of the inner side of the washing station body to the drain hole.

9. A sampling needle cleaning system, comprising a cleaning pump and a waste liquid pump, characterized in that: It also includes the sampling needle cleaning station according to any one of claims 1-8, wherein the outlet of the cleaning pump is connected to the first cleaning hole and the second cleaning hole through a cleaning pipeline, and the inlet of the waste liquid pump is connected to the drain hole through a waste liquid pipeline.

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