CN209311506U - A kind of thermostatic type sample introduction needle for level detection - Google Patents
A kind of thermostatic type sample introduction needle for level detection Download PDFInfo
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- CN209311506U CN209311506U CN201821562358.3U CN201821562358U CN209311506U CN 209311506 U CN209311506 U CN 209311506U CN 201821562358 U CN201821562358 U CN 201821562358U CN 209311506 U CN209311506 U CN 209311506U
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- sample introduction
- introduction needle
- heater
- heating muff
- water
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Abstract
The utility model relates to a kind of thermostatic type sample introduction needles for level detection, belong to medical instrument, technology of instrument and meter field.Heated at constant temperature needle is by heater, peristaltic pump, heating muff and sample introduction needle composition, after water reaches target temperature in heater, peristaltic pump extracts water by pipeline out from heater, and it is injected into heating muff by hose from heating muff bottom end, since sample introduction needle is located in heating muff, under the action of the hot water of injection heating casing, sample in sample introduction needle, reagent can be maintained at temperature constant state, hot water is flowed back into heater by pipeline, due to heater, peristaltic pump, it is connected between sample introduction needle with hose, be conducive to sample introduction needle to carry out extracting reagent and level detection in different location.The utility model is designed reasonably, structure are simple, using recirculated water in sample introduction needle outer wall sleeve constant flow, can guarantee that reagent or sample can be cooled uniformly in this way, avoid level detection signal disturbed.
Description
Technical field
The utility model relates to a kind of thermostatic type sample introduction needles for level detection, belong to medical instrument, instrument and meter skill
Art field.
Background technique
In bioengineering field, automation equipment generally will use the function of automatic sampling, need to use sample introduction
Needle carries out sample suction operation.Since the amount of reagent that sample introduction needle is drawn is small, sample introduction needle stitch internal diameter is tiny, it is easy to draw sample
This when, collides with reagent bottle, heparin tube and is damaged, this just needs sample introduction needle can be when touching the surface of reagent, sample just
It can detect liquid level, and control moving component and stop working, to realize the function of anticollision.Meanwhile many biochemical tests with
Sample introduction needle draws reagent or when sample, needs within a short period of time to heat reagent or sample, and get reagent or
Sample, but in traditional technology, in sample introduction needle reagent or sample heat, be usually coated with one layer of electricity in sample introduction needle outer wall
Resistance silk or heating film, this heating method cannot quickly and uniformly heat reagent, simultaneously because the electric current in resistance wire can be right
Sample introduction needle level detection result impacts.
Summary of the invention
In view of the above problems, the utility model provides a kind of thermostatic type sample introduction needle for level detection, is
Realization above-mentioned purpose, its technical solution is that:
A kind of thermostatic type sample introduction needle for level detection, thermostatic type sample introduction needle by heater, peristaltic pump, heating muff and
Sample introduction needle composition, heater are a closed container, and temperature sensor is provided in heater, is equipped with water supply connector above heater
And water outlet connector, heating muff be in hollow cylinder shape, heating muff upper end be equipped with water outlet connector, heating muff lower end be equipped with into
Water swivel, heater upper water-out connector are connected in peristaltic pump water supply connector by pipeline, and the water outlet connector of peristaltic pump passes through pipe
Road is connected in the water supply connector of heating muff, and the water outlet connector of heating muff is connected to the water supply connector of heater by pipeline
On, it is coated with polytetrafluoroethylene (PTFE) shielded layer in sample introduction needle outside wall surface, signal shielding line is provided in sample introduction needle, sample introduction needle, which is sleeved on, to be added
In thermal sleeve, peristaltic pump and temperature sensor are linked on controller by conducting wire respectively, and signal shielding line is linked into level detection
On controller.
Due to using above technical scheme, the utility model is provided with temperature sensor in heater, to heater
Water is heated in heater by the way of built-in heating or external heating, and controls temperature by temperature sensor,
After water reaches target temperature in heater, peristaltic pump extracts water by pipeline out from heater, and passes through hose from heating mantle
Tube bottom end is injected into heating muff, since sample introduction needle is located in heating muff, under the action of the hot water of injection heating casing,
Sample, reagent in sample introduction needle can guarantee to greatest extent the reaction condition of reagent, sample under temperature constant state, etc. heating mantles
Full of after water, hot water is flowed back into heater pipe by pipeline, due to being connected between heater, peristaltic pump, sample introduction needle with hose,
Be conducive to sample introduction needle to carry out extracting reagent and level detection in different location.
The utility model is designed reasonably, structure are simple, using recirculated water in sample introduction needle outer wall sleeve constant flow, in this way
Can guarantee that reagent or sample can be cooled uniformly, meanwhile, sample introduction needle appearance is coated with by polytetrafluoroethylene (PTFE), water will not with into
The conducting of sample needle, avoids level detection signal interference., sample introduction needle outer wall do not have to coating resistance wire or heating film, avoids examining liquid level
The signal of survey generates interference.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, sees attached drawing.
A kind of thermostatic type sample introduction needle for level detection, thermostatic type sample introduction needle is by heater 1, peristaltic pump 3, heating muff
6 and sample introduction needle 5 form, heater 1 is a closed container, is provided with temperature sensor 2 in heater, is equipped with above heater 1
Water supply connector and water outlet connector, heating muff 6 are in hollow cylinder shape, and 6 upper end of heating muff is equipped with water outlet connector, heating muff
6 lower ends are equipped with water supply connector, and 1 upper water-out connector of heater is connected in 3 water supply connector of peristaltic pump by pipeline, peristaltic pump 3
Water outlet connector is connected in the water supply connector of heating muff 6 by pipeline, and the water outlet connector of heating muff 6 is connected to by pipeline
In the water supply connector of heater 1, it is coated with polytetrafluoroethylene (PTFE) shielded layer in 5 outside wall surface of sample introduction needle, is provided with signal screen in sample introduction needle 5
Line 7 is covered, sample introduction needle 5 is sleeved in heating muff 6, and peristaltic pump 3 and temperature sensor 2 are linked on controller 4 by conducting wire respectively,
Signal shielding line is linked on level detection controller.
Heater 1 can use built-in heating or external heating method, when water reaches target temperature in heater 1
Afterwards, peristaltic pump 3 extracts water out from heater 1, and injects from 6 bottom end of heating muff, and hot water can be with reagent, sample in sample introduction needle
Heat exchange is carried out, after heating muff 6 is full of hot water, hot water flows back into heater 1 from 6 top of heating muff.
As it can be seen that the utility model suitable for bioengineering field, needs to carry out level detection, to sample with sample introduction needle
The case where this or reagent are heated.The present invention builds simple and convenient the of less demanding of sample introduction needle.In entire method
In cost, due to not needing to heat in sample introduction needle again, the function of temperature feedback reduces the processing technology of sample introduction needle complexity.
Simultaneously as all having plated a strata tetrafluoroethene in sample introduction needle device sample introduction conduit and shielding shell inside and outside, advantageously reduce
Sample introduction needle hangs liquid phenomenon.
Claims (2)
1. a kind of thermostatic type sample introduction needle for level detection, it is characterised in that: thermostatic type sample introduction needle is by heater (1), wriggling
(3), heating muff (6) and sample introduction needle (5) composition are pumped, heater (1) is a closed container, is provided with temperature in heater (1)
Sensor (2), heater (1) top are equipped with water supply connector and water outlet connector, and heating muff (6) is in hollow cylinder shape, heating
Casing (6) upper end is equipped with water outlet connector, and heating muff (6) lower end is equipped with water supply connector, and heater (1) upper water-out connector passes through pipe
Road is connected in peristaltic pump (3) water supply connector, the water outlet connector of peristaltic pump (3) by pipeline be connected to heating muff (6) into
On water swivel, the water outlet connector of heating muff (6) is connected in the water supply connector of heater (1) by pipeline, and sample introduction needle (5) is outside
It is coated with polytetrafluoroethylene (PTFE) shielded layer on wall surface, is provided in sample introduction needle (5) signal shielding line (7), sample introduction needle (5) is sleeved on heating
In casing (6), peristaltic pump (3) and temperature sensor (2) are linked on controller (4) by conducting wire respectively.
2. a kind of thermostatic type sample introduction needle for level detection as described in claim 1, it is characterised in that: the pipeline is
Hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821562358.3U CN209311506U (en) | 2018-09-20 | 2018-09-20 | A kind of thermostatic type sample introduction needle for level detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821562358.3U CN209311506U (en) | 2018-09-20 | 2018-09-20 | A kind of thermostatic type sample introduction needle for level detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209311506U true CN209311506U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821562358.3U Active CN209311506U (en) | 2018-09-20 | 2018-09-20 | A kind of thermostatic type sample introduction needle for level detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982894A (en) * | 2018-09-20 | 2018-12-11 | 武汉纺织大学 | A kind of thermostatic type sample introduction needle for level detection |
-
2018
- 2018-09-20 CN CN201821562358.3U patent/CN209311506U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982894A (en) * | 2018-09-20 | 2018-12-11 | 武汉纺织大学 | A kind of thermostatic type sample introduction needle for level detection |
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