CN210720437U - Sample adding needle cleaning liquid drainage system for in-vitro diagnostic equipment - Google Patents
Sample adding needle cleaning liquid drainage system for in-vitro diagnostic equipment Download PDFInfo
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- CN210720437U CN210720437U CN201921024414.2U CN201921024414U CN210720437U CN 210720437 U CN210720437 U CN 210720437U CN 201921024414 U CN201921024414 U CN 201921024414U CN 210720437 U CN210720437 U CN 210720437U
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Abstract
The utility model discloses a sample adding needle washing liquid drainage system for in vitro diagnostic equipment, including vacuum pump, negative pressure container, waste liquid tank and the washing pond that is used for wasing the sample adding needle, the leakage fluid dram of washing pond pass through the drainage pipeline with negative pressure container communicates, and the leakage fluid dram of negative pressure container bottom communicates with waste liquid tank through discharging tube, and the extraction opening of vacuum pump communicates through extraction tube and negative pressure container top, the gas vent of vacuum pump pass through exhaust pipe with wash the pond and communicate, establish ties on the exhaust pipe and have first two-position three-way valve, establish ties on another interface of first two-position three-way valve and have blow-down pipe; the liquid discharge pipeline, the discharge pipeline and the air suction pipeline are all connected in series with a normally closed two-way valve. The utility model discloses utilize the negative pressure to carry out the flowing back, the vacuum pump not only can guarantee the vacuum of vacuum tank, makes the waste liquid in the cleaning pool discharge to the vacuum tank in, can also blow the processing to the application of sample needle after the washing, weathers application of sample needle wall, avoids the liquid wall built-up phenomenon of application of sample needle wall completely.
Description
Technical Field
The utility model relates to an external diagnostic equipment's waste liquid system especially relates to a application of sample needle washing liquid flowing back system.
Background
In the detection process, an immunological in-vitro diagnostic device (such as a chemiluminescence immunoassay analyzer, a biochemical analyzer and the like) needs to process a sample firstly, different reaction reagents are required to be added into the sample in sequence according to detection items in the sample processing process, and the sample can enter a detection module for detection after being processed. In the sample processing process, a sample to be detected needs to be diluted first, and corresponding reagents are sequentially added after dilution. Therefore, in the sample processing process, after each reagent is added to the sample adding needle, the sample adding needle needs to be cleaned by using a cleaning solution, so that the cross contamination of the reagents is avoided, and the accuracy of the sample detection result is ensured. Therefore, the cleaning waste liquid drainage system is an indispensable part of the immune in-vitro diagnosis equipment.
Traditional washing waste liquid flowing back system utilizes the dead weight of waste liquid to realize the emission of waste liquid, therefore it is very high to the pipeline overall arrangement requirement, requires that the connecting pipe in the drainage pipeline has great internal diameter, and the whole trend of pipeline must keep certain slope just can avoid the waste liquid overflow phenomenon, needs to occupy great installation space. However, as the extracorporeal diagnostic apparatus is more and more miniaturized and more compact, the conventional drainage system cannot meet the requirement of the extracorporeal diagnostic apparatus.
In order to meet the miniaturization requirement of in vitro diagnostic equipment, a power pump is generally connected in series between a cleaning pool and a waste liquid recovery container, and waste liquid in the cleaning pool is pumped away by the power pump. Although this drainage system can discharge waste liquid into a collection container, it has the following problems in use: firstly, the waste liquid is easy to collide due to high flowing speed of the waste liquid, so that the waste liquid is splashed to the periphery of the cleaning pool; secondly, after cleaning, the outer wall of the cleaning needle has a liquid wall hanging phenomenon, liquid drops attached to the outer wall are easy to spill in an area outside a cleaning pool in the moving process of the sample adding needle, the cleaning difficulty is high, and the customer experience is influenced; thirdly, with the high-speed development of the immunological in vitro diagnostic equipment, the number of the sampling needles and the power pumps matched with the sampling needles are correspondingly increased, the utilization rate of the power pumps is low, and the liquid path system of the equipment is more complicated.
Disclosure of Invention
An object of the utility model is to provide a application of sample needle washing liquid flowing back system for external diagnostic equipment.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model discloses a sample application needle washing liquid flowing back system for external diagnostic equipment, including vacuum pump, negative pressure container, waste liquid jar and the washing pond that is used for wasing the sample application needle, the leakage fluid dram of washing pond through drainage pipeline with the negative pressure container communicates, the leakage fluid dram of negative pressure container bottom through discharge pipeline with the waste liquid jar communicates, the extraction opening of vacuum pump passes through extraction pipeline and negative pressure container top intercommunication, the gas vent of vacuum pump passes through exhaust pipeline and the washing pond communicates, it has first two-position three-way valve to establish ties on the exhaust pipeline, it has the blow-down pipe to establish ties on another interface of first two-position three-way valve; and the liquid discharge pipeline, the discharge pipeline and the air suction pipeline are all connected in series with a normally closed two-way valve.
A liquid injection channel communicated with a cleaning cavity of the cleaning pool is formed in the side wall of the cleaning pool, an air blowing channel communicated with the cleaning cavity is formed in the side wall of the cleaning pool above the liquid injection channel, and an air inlet of the air blowing channel is communicated with an air outlet of the exhaust pipeline; the lower part of the cleaning cavity is expanded to form a liquid drainage interface for connecting the liquid drainage pipeline.
The priming passageway is a plurality of, and a plurality of priming passageways are followed wash the even interval setting of pond circumference, every priming passageway is from the surface slope downwardly extending who washs the pond lateral wall.
The cleaning device is characterized in that the blowing channels are multiple, the blowing channels are uniformly arranged along the circumferential direction of the cleaning pool at intervals, and each blowing channel obliquely extends downwards from the outer surface of the side wall of the cleaning pool.
The negative pressure container comprises two vacuum tanks connected in parallel on the air suction pipeline; and a second two-position three-way valve is connected in series on the liquid discharge pipeline, and two outlets of the second two-position three-way valve are respectively communicated with the vacuum tank.
And each vacuum tank is provided with a liquid level sensor and a pressure sensor.
And a bubble sensor is connected in series on the air pumping pipeline close to the vacuum pump.
The utility model has the advantages that the vacuum pump can not only ensure the vacuum degree of the vacuum tank, discharge the waste liquid in the cleaning tank into the vacuum tank, but also blow the cleaned sampling needle, blow the wall of the sampling needle to dry, and completely avoid the liquid wall hanging phenomenon of the wall of the sampling needle; the two vacuum tanks can be switched with each other, and the standby of the whole machine is not needed during use, so that the continuous work of the instrument is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the cleaning tank of the present invention.
Fig. 3 is a schematic block circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, the utility model discloses a sample application needle cleaning fluid drainage system for in vitro diagnostic equipment, including vacuum pump 1, negative pressure container, waste liquid tank 2 and the washing pond 3 that is used for wasing the sample application needle, the leakage fluid dram of washing pond 3 through drainage pipeline 4 with the negative pressure container intercommunication, the leakage fluid dram of negative pressure container bottom through discharge pipeline 5 with waste liquid tank 2 intercommunication, the extraction opening of vacuum pump 1 through extraction pipeline 6 with negative pressure container top intercommunication, the gas vent of vacuum pump 1 through exhaust pipeline 7 with wash pond 3 intercommunication, it has first two-position three-way valve 8 to establish ties on the exhaust pipeline 7, it has blow-down pipe 9 to establish ties on another interface of first two-position three-way valve 8;
as shown in fig. 1, in order to avoid the standby of the apparatus for a long time, the negative pressure container comprises a vacuum tank 10 connected in parallel to the suction line 6, the discharge line 5 comprises two waste liquid pipes respectively communicated with the vacuum tank 10, and each waste liquid pipe is connected in series with a normally closed two-way valve 11.1; the air extraction pipeline 6 is connected in series with a three-way joint 12 (certainly, according to actual requirements, a two-position three-way electromagnetic valve can be used), the other two joints of the three-way joint 12 are respectively communicated with the top of the vacuum tank 10, and two air extraction branch pipes of the air extraction pipeline 6 between the three-way joint 12 and the vacuum tank 10 are both connected in series with a normally closed two-way valve 11.2; a second two-position three-way valve 13 is connected in series on the liquid discharge pipeline 4, two outlets of the second two-position three-way valve 13 are respectively communicated with the vacuum tanks 10, and the second two-position three-way valve 13 is used for switching different vacuum tanks 10 to meet liquid discharge requirements; a normally closed two-way valve 11.3 is connected in series on the liquid discharge pipeline 4 between the second two-position three-way valve 13 and the cleaning pool 3. Each vacuum tank 10 is provided with a liquid level sensor 14 and a pressure sensor 15 which are respectively used for monitoring the liquid level and the vacuum degree of the vacuum tank 10; in order to ensure the normal operation of the instrument, the air pumping pipeline 6 close to the vacuum pump 1 is connected in series with a bubble sensor 16 for detecting whether waste liquid in the vacuum tank 10 is sucked back into the vacuum pump 1 or not, so as to ensure the normal operation of the instrument.
As shown in fig. 2, the side wall 3.1 of the cleaning pool 3 is provided with liquid injection channels 3.3 communicated with the cleaning cavity 3.2 at intervals along the circumferential direction, each liquid injection channel 3.3 extends downwards from the outer surface of the side wall 3.1 in an inclined manner, so that the cleaning liquid flows into the cleaning cavity 3.2 from top to bottom in an inclined manner; a side wall 3.1 positioned above the liquid injection channel 3.3 is provided with a blowing channel 3.4 communicated with the cleaning cavity 3.2, an air inlet of the blowing channel 3.4 is communicated with an air outlet of the exhaust pipeline, each blowing channel 3.4 extends downwards from the outer surface of the side wall 3.1 in an inclined way, so that air is obliquely blown into the upper part of the cleaning cavity 3.2 from top to bottom, and liquid drops on the outer wall of the sampling needle are blown off and dried by air flow in the uniform ascending process of the sampling needle, so that the wall hanging phenomenon is avoided; the lower part of the cleaning cavity 3.2 is expanded to form a liquid discharge interface 3.5 for connecting the liquid discharge pipeline 4, so that the installation is convenient.
In order to realize automatic control, the first two-position three-way valve 8 and the second two-position three-way valve 13 are both two-position three-way electromagnetic valves, and the normally-closed two-way valve is an electromagnetic valve; as shown in fig. 3, the signal output end of the liquid level sensor 14 and the signal output end of the pressure sensor 15 are electrically connected to the signal input end of the in vitro diagnostic device control system, and the control output end of the in vitro diagnostic device control system is electrically connected to the control input end of the vacuum pump 1, the control input end of the first two-position three-way valve 8, the control input end of the second two-position three-way valve 13, and the control input end of the normally-closed two-way valve.
The specific working process of the utility model is described as follows:
first, a vacuum is established: closing a normally closed two-way valve 11.1 on a discharge pipeline 5 and a normally closed two-way valve 11.3 on a liquid discharge pipeline 4, opening a normally closed two-way valve 11.2 on an air suction pipeline 6, starting a vacuum pump 1 to simultaneously extract negative pressure from two vacuum tanks 10 (of course, according to actual requirements, negative pressure can be independently extracted from any vacuum tank 10), and closing the vacuum pump 1 and the normally closed two-way valve 11.2 when the pressure detected by a pressure sensor 15 reaches a preset value; if the vacuum degree of the vacuum tank 10 is reduced in the working process, the vacuum pump 1 is started at any time to pump vacuum, and the negative pressure of the vacuum tank 10 is ensured to meet the liquid drainage requirement;
secondly, cleaning the sample adding needle: adjusting a second two-position three-way valve 13 to enable a vacuum tank 10 to be communicated with a cleaning cavity 3.2, controlling a first two-position three-way valve 8 to be communicated with an emptying pipe 9, regarding a normally closed two-way valve 11.3, enabling a cleaning solution conveying system of the in-vitro diagnostic equipment to continuously enter the cleaning cavity 3.2 through a liquid injection channel 3.3, soaking a sample adding needle with a cleaning solution, opening the normally closed two-way valve 11.3 after cleaning is finished, and enabling cleaning waste liquid to quickly enter the vacuum tank 10 through a liquid discharge pipeline 4 (repeated soaking and cleaning can be carried out according to actual cleaning requirements); after the sample adding needle is cleaned, adjusting the first two-position three-way valve 8 to enable the exhaust pipeline 7 of the vacuum pump 1 to be communicated with the air blowing channel 3.4 of the cleaning pool 3, continuously blowing the pumped air into the cleaning cavity 3.2 through the exhaust pipeline 7 when the vacuum pump 1 works, blowing the outer wall of the sample adding needle with the air to dry in the process that the sample adding needle is uniformly lifted, and finishing the cleaning operation of the sample adding needle; when the liquid level in the vacuum tank 10 reaches and predetermines the height, adjust two three-way valves 13 of second and make washing pond 3 and another vacuum tank 10 intercommunication, discharge the waste liquid in the vacuum tank 10 that will contain the waste liquid to waste liquid jar 2 in, guarantee the normal operating of instrument, avoid long-time standby.
Claims (7)
1. The utility model provides a application of sample needle washing liquid flowing back system for external diagnostic equipment which characterized in that: the device comprises a vacuum pump, a negative pressure container, a waste liquid tank and a cleaning pool for cleaning a sample adding needle, wherein a liquid outlet of the cleaning pool is communicated with the negative pressure container through a liquid discharging pipeline, a liquid outlet at the bottom of the negative pressure container is communicated with the waste liquid tank through a discharging pipeline, an air outlet of the vacuum pump is communicated with the top of the negative pressure container through an air extracting pipeline, an air outlet of the vacuum pump is communicated with the cleaning pool through an air exhausting pipeline, a first two-position three-way valve is connected in series on the air exhausting pipeline, and a vent pipe is connected in series on the other interface of the first two-position three-; and the liquid discharge pipeline, the discharge pipeline and the air suction pipeline are all connected in series with a normally closed two-way valve.
2. The loading needle cleaning solution drain system for in vitro diagnostic equipment as defined in claim 1, wherein: a liquid injection channel communicated with a cleaning cavity of the cleaning pool is formed in the side wall of the cleaning pool, an air blowing channel communicated with the cleaning cavity is formed in the side wall of the cleaning pool above the liquid injection channel, and an air inlet of the air blowing channel is communicated with an air outlet of the exhaust pipeline; the lower part of the cleaning cavity is expanded to form a liquid drainage interface for connecting the liquid drainage pipeline.
3. The loading needle cleaning solution drain system for in vitro diagnostic equipment as defined in claim 2, wherein: the priming passageway is a plurality of, and a plurality of priming passageways are followed wash the even interval setting of pond circumference, every priming passageway is from the surface slope downwardly extending who washs the pond lateral wall.
4. The loading needle cleaning solution drain system for in vitro diagnostic equipment as defined in claim 2, wherein: the cleaning device is characterized in that the blowing channels are multiple, the blowing channels are uniformly arranged along the circumferential direction of the cleaning pool at intervals, and each blowing channel obliquely extends downwards from the outer surface of the side wall of the cleaning pool.
5. The loading needle cleaning solution drain system for in vitro diagnostic equipment as defined in claim 1, wherein: the negative pressure container comprises two vacuum tanks connected in parallel on the air suction pipeline; and a second two-position three-way valve is connected in series on the liquid discharge pipeline, and two outlets of the second two-position three-way valve are respectively communicated with the vacuum tank.
6. The loading needle cleaning solution drain system for in vitro diagnostic equipment as defined in claim 5, wherein: and each vacuum tank is provided with a liquid level sensor and a pressure sensor.
7. The loading needle cleaning solution drain system for in vitro diagnostic equipment as defined in claim 1, wherein: and a bubble sensor is connected in series on the air pumping pipeline close to the vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921024414.2U CN210720437U (en) | 2019-07-02 | 2019-07-02 | Sample adding needle cleaning liquid drainage system for in-vitro diagnostic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921024414.2U CN210720437U (en) | 2019-07-02 | 2019-07-02 | Sample adding needle cleaning liquid drainage system for in-vitro diagnostic equipment |
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| CN210720437U true CN210720437U (en) | 2020-06-09 |
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| CN201921024414.2U Active CN210720437U (en) | 2019-07-02 | 2019-07-02 | Sample adding needle cleaning liquid drainage system for in-vitro diagnostic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187138A (en) * | 2019-07-02 | 2019-08-30 | 安图实验仪器(郑州)有限公司 | Sample needle cleaning solution drainage system for in-vitro diagnosis equipment |
| CN112683887A (en) * | 2021-03-19 | 2021-04-20 | 苏州长光华医生物医学工程有限公司 | Device and method for discharging and drying waste liquid of chemiluminescence instrument |
-
2019
- 2019-07-02 CN CN201921024414.2U patent/CN210720437U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187138A (en) * | 2019-07-02 | 2019-08-30 | 安图实验仪器(郑州)有限公司 | Sample needle cleaning solution drainage system for in-vitro diagnosis equipment |
| CN112683887A (en) * | 2021-03-19 | 2021-04-20 | 苏州长光华医生物医学工程有限公司 | Device and method for discharging and drying waste liquid of chemiluminescence instrument |
| CN112683887B (en) * | 2021-03-19 | 2021-06-04 | 苏州长光华医生物医学工程有限公司 | Device and method for discharging and drying waste liquid of chemiluminescence instrument |
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