CN106596245A - Continuous liquid feeding type digestion instrument - Google Patents
Continuous liquid feeding type digestion instrument Download PDFInfo
- Publication number
- CN106596245A CN106596245A CN201710069749.5A CN201710069749A CN106596245A CN 106596245 A CN106596245 A CN 106596245A CN 201710069749 A CN201710069749 A CN 201710069749A CN 106596245 A CN106596245 A CN 106596245A
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- CN
- China
- Prior art keywords
- gas treatment
- digestion
- bottle
- vent gas
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Abstract
The invention provides a continuous liquid feeding type digestion instrument. The digestion instrument comprises a liquid supply module, a digestion module, a heating module and a tail gas treatment module. The liquid supply module, the digestion module and the tail gas treatment module are sequentially connected to form a relatively closed system. The liquid supply module is an automatic continuous liquid feeding device which can simultaneously provide digestion solutions for one or more digestion units, and the liquid feeding speed is stable and controllable. The digestion module comprises one or more digestion units, and each digestion unit can independently complete the digestion of samples. The heating module is a temperature-controlled heating device which can simultaneously and uniformly heat one or more of the digestion units. The tail gas treatment module carries out the harmless treatment of all harmful gas produced in the digestion process. The digestion instrument overcomes the shortcomings that an existing digestion method is time consuming and pollutes the environment, and the fast and environment-friendly digestion of the samples can be achieved.
Description
Technical field
The present invention relates to the pre-treatment field of metallic element analysis, especially a kind of continuous liquid adding type clear up instrument.
Background technology
In the sample, metallic element Jing is often combined or inorganic with other with the Organic substance such as protein, carbohydrate, lipid
Composition is mixed, and needs the ion for existing in solution is converted into by pre-treatment and is analyzed.
Conventional pretreatment technology mainly has dry ashing, micro-wave digestion, Wet etc. at present.Dry ashing is because portion
Point Low-Temperature Element response rate is low, background valuess are high and eliminate in trace, ultra trace analysis field face.Micro-wave digestion be by sample with
Excess acid mixing is placed in hermetic container is cleared up with microwave heating；Conventional wet is cleared up and usually sample is mixed with excess acid
Cleared up in electrically heated mode together in open-top receptacle.Both approaches are required to the pre- of long period and clear up and catch up with acid
(shooting excess acid by heating) process, efficiency are very low；Clearing up, nitrogen oxides, acid gas that sour process produces are caught up with to be discharged into
Environmental pollution is will also result in air.
Existing part public technology attempts to solve these problems, application number 201510289363.6 and 201010570536.9
Patent individually disclose it is a kind of can automatic liquid-feeding clear up instrument, but above-mentioned instrument only realizes the automatization of acid adding, it is still necessary to
Acid is caught up with, and acid gas absorption device design detached with digestion instrument is difficult to realize fully absorbing for acid gas.So, take, pollute
Problem be not resolved.
The patent of application number 201120452647.X discloses a kind of chemical digestion instrument for stirring and being evacuated, but stirs
Too big lifting is not had to oxidation rate, the air extractor of open type cannot also realize fully absorbing for waste gas.
The patent of application number 201420020209.X discloses a kind of heating and clears up thermostat, and the invention is by adding automatically
Liquid and automatic flushing device realize automatical dosing and cleaning automatically.But before sample of the invention using technical field for chemical assay
Process, be particularly suited for the measure of COD in water.Each digestion tube is provided with condensing tube, and device is complicated, and volume is larger.Clear up and be
System sealing is to make its lower mouth and digestion tube connection suitable for reading so as to realize sealing by lifting condensing tube, cumbersome, in digestion tube
When more, operation difficulty is larger.It is interrupted liquid feeding or continuous liquid feeding that liquid feeding mode is not expressed in the invention, if discontinuously liquid feeding is then
Clear up, catch up with the time-consuming problem of acid without solution in advance；If while continuous liquid feeding, automatic liquid-feeding unit is connected with many siphunculus of liquid feeding
Liquid feeding mode can because of gravity, go out the difference that the reasons such as valve flexible pipe is different in size cause liquid feeding speed, so that Specimen eliminating is uneven.
In addition, from condensing tube upper end liquid feeding will also result in liquid feeding time delay length, easily remain the problems such as.
In view of the defect that above-mentioned known technology is present, the present invention provides one kind and clears up instrument, while solving digestion process efficiency
The problem of low and pollution environment.
The content of the invention
The present invention provides a kind of continuous liquid adding type and clears up instrument, including feed flow module, clears up at module, heating module, tail gas
Reason module.Feed flow module, clear up module, vent gas treatment module and be sequentially connected, the relative closed system of composition.Feed flow module is automatic
Continuous liquid supply device, can clear up unit for one or more simultaneously and persistently provide digestion solution, and liquid feeding velocity-stabilization is controllable.Clear up mould
Block includes that one or more clear up unit, respectively clear up unit can synchronous complete independently sample clear up.Heating module can for temperature
Control type heater, can be while uniformly heating one or more clears up unit.Vent gas treatment module will be produced in digestion process
Whole harmful gass carry out harmless treatment.
Further, the feed flow module includes liquid containing bottle, tube for transfusion and pump.
Further, the liquid containing bottle has liquid storage bottle cap, has for balancing the hole of pressure on liquid containing bottle lid；Liquid containing bottle, storage
Liquid bottle cap, tube for transfusion are acidproof material；Pump can convey acid with strong oxidizing property can be while persistently supplying for one or more pipelines
Liquid, liquid supply speed stable homogeneous are adjustable, and range of accommodation is 0 ~ 10mL/min, adjust step-length and are less than 0.1mL/min.
Further, the unit of clearing up includes digestion tube and clears up lid have two holes on digestion tube lid, connect respectively
Tube for transfusion and appendix, digestion tube and clear up lid for heat-resisting acidproof material, salable after screwing, and are sequentially placed in heating module
On.
Further, the temperature controlled heater, temperature controlling range are room temperature to 400 DEG C.
Further, the vent gas treatment module include surge flask, appendix, surge flask communicating pipe, vent gas treatment bottle and
Vent gas treatment bottle communicating pipe.
Further, there is buffering bottle cap on the surge flask, it is salable, there is an appropriate number of hole to insert on surge flask lid
Appendix and surge flask communicating pipe, there is cock to switch gas circuit on surge flask communicating pipe；There is vent gas treatment bottle on vent gas treatment bottle
Lid, has an appropriate number of hole to insert appendix and vent gas treatment bottle communicating pipe on vent gas treatment bottle cap；Surge flask, buffering bottle cap
For acidproof material, appendix, vent gas treatment bottle, vent gas treatment bottle cap and vent gas treatment bottle communicating pipe acid and alkali resistance material is；Storage
Digestion solution is filled in liquid bottle, in vent gas treatment bottle, alkali liquor is filled.
Further, the liquid containing bottle and pump, pump and clear up lid and connected by tube for transfusion respectively；Lid is cleared up with buffering
Bottle, surge flask are connected by appendix respectively with vent gas treatment bottle, below appendix vent gas treatment bottle end insertion alkali liquor liquid level；Tail
Gas disposal bottle communicating pipe is connected with air or air pump, vent gas treatment bottle communicating pipe lower end be maintained at more than alkali liquor liquid level.
Further, the waste gas for producing in digestion process is all processed through surge flask and vent gas treatment bottle, and acid gas is slow
Rush condensation in bottle to reclaim, nitrogen oxides are completely absorbed in vent gas treatment bottle.
Compared with prior art, the invention has the advantages that：Digestion solution is slowly continuously added in digestion process, is disappeared
Solution completely after stop addition, can avoid clearing up incipient stage excessively violent reaction and the excessive addition of digestion solution, so as to save
Go it is pre- clear up and catch up with sour process, greatly reduce the pre-treatment time；Closed clearing up ensure that harmful gass with vent gas treatment environment
It is fully processed, it is to avoid pollution to environment.
Description of the drawings
Fig. 1 is the longitudinal sectional view of the present invention.
Fig. 2 is a specific embodiment longitudinal sectional view of the present invention.
Wherein, it is entitled corresponding to the reference in accompanying drawing：1-liquid storage bottle cap, 2-liquid containing bottle, 3-digestion solution,
4-hole, 5-tube for transfusion, 6-pump, 7-speed governing knob, 8-clear up lid, 9-cock, 10-heater, 11-surge flask
Communicating pipe, 12-digestion tube, 13-sample, 14-buffering bottle cap, 15-surge flask, 16-thermoregulation knob, 17-appendix,
18-vent gas treatment bottle communicating pipe, 19-vent gas treatment bottle cap, 20-vent gas treatment bottle, 21-alkali liquor, 22-compressed gas cylinder,
23-air pressure regulator, 24-appendix II, 25-flow control valve.
Specific embodiment
The present invention is described in further detail with reference to embodiment, description below be by the way of enumerating,
But protection scope of the present invention should not be limited to this.
Embodiment 1
This enforcement includes liquid containing bottle 2, liquid storage bottle cap 1, tube for transfusion 5, peristaltic pump 6, clears up lid 8, graphite heating device 10, clears up
Pipe 12, buffering bottle cap 14, surge flask 15, surge flask communicating pipe 11, appendix 17, vent gas treatment bottle communicating pipe 18, vent gas treatment
Bottle cap 19, vent gas treatment bottle 20.There is hole 4 on liquid storage bottle cap 1, peristaltic pump 6 has speed governing knob 7, and graphite heating device 10 has homoiothermic
Knob 16, fills digestion solution 3 in liquid containing bottle 2, have cock 9, alkali liquor 21 is filled in vent gas treatment bottle 20 on surge flask communicating pipe 11,
Sample 13 is placed in digestion tube 12.
Liquid storage bottle cap 1, liquid containing bottle 2, tube for transfusion 5, buffering bottle cap 14, surge flask 15, appendix 17, vent gas treatment bottle cap
19th, vent gas treatment bottle 20, vent gas treatment bottle communicating pipe 18 are polyethylene material, clear up lid 8, the connection of digestion tube 12, surge flask
Pipe 11, cock 9 are glass material.
Liquid containing bottle 2 and peristaltic pump 6, peristaltic pump 6 and clear up lid 8 and connected by tube for transfusion 5 respectively；Clear up lid 8 and delay
Rush bottle 15, surge flask 15 to be connected by appendix 17 with vent gas treatment bottle 20 respectively；Surge flask communicating pipe 11 is inserted in buffering bottle cap
In hole on 14；Below 17 vent gas treatment bottle end of appendix insertion, 21 liquid level of alkali liquor；Vent gas treatment bottle communicating pipe 18 is connected with air
It is logical.
This enforcement operating process is：Four parts of samples 13 are weighed in 4 digestion tubes 12 respectively, is covered tightly and is cleared up lid 8, often
Individual lid 8 of clearing up connects tube for transfusion 5 and appendix 17, cut-out tap 9 respectively.Adjust thermoregulation knob 16 to be heated to digestion tube 12
Proper temperature.After temperature stabilization, peristaltic pump 6 is opened, digestion solution 3 is slowly continuously added to.Suitably adjusted according to situation of clearing up
Fast knob 7 adds speed with digestion solution to adjust heating-up temperature with thermoregulation knob 16, until sample 13 is cleared up completely, closes and wriggles
Pump 6 and graphite heating device 10, open cock 9, and digestion tube 12 is removed after cooling, and transfer, constant volume, digestion process are completed.
Embodiment 2
This enforcement includes compressed gas cylinder 22, air pressure regulator 23, appendix II 24, liquid containing bottle 2, liquid storage bottle cap 1, tube for transfusion 5, disappears
Solution lid 8, graphite heating device 10, digestion tube 12, buffering bottle cap 14, surge flask 15, surge flask communicating pipe 11, appendix 17,
Vent gas treatment bottle communicating pipe 18, vent gas treatment bottle cap 19, vent gas treatment bottle 20.Digestion solution 3, compressed gas cylinder are filled in liquid containing bottle 2
There are compressed gas in 22, pressure is adjusted by air pressure regulator 23 digestion solution 3 is pressed into into tube for transfusion 5, tube for transfusion 5 has Flow-rate adjustment
Switch 25, can adjust 3 flow velocity of digestion solution in each tube for transfusion 5 respectively, and graphite heating device 10 has thermoregulation knob 16, and surge flask connects
There is cock 9 on siphunculus 11, in vent gas treatment bottle 20, fill alkali liquor 21, sample 13 is placed in digestion tube 12.
Appendix II 24, liquid storage bottle cap 1, liquid containing bottle 2, tube for transfusion 5, buffering bottle cap 14, surge flask 15, appendix 17, tail
Gas disposal bottle cap 19, vent gas treatment bottle 20, vent gas treatment bottle communicating pipe 18 be polyethylene material, clear up lid 8, digestion tube 12,
Surge flask communicating pipe 11, cock 9 are glass material.
Compressed gas cylinder 22 is connected by appendix II 24 with liquid containing bottle 2, liquid containing bottle 2 passes through transfusion respectively with lid 8 is cleared up
Pipe 5 is connected；Clear up lid 8 to be connected by appendix 17 with vent gas treatment bottle 20 respectively with surge flask 15, surge flask 15；Surge flask
It is inserted in communicating pipe 11 in the hole on buffering bottle cap 14；Below 17 vent gas treatment bottle end of appendix insertion, 21 liquid level of alkali liquor；At tail gas
Reason bottle communicating pipe 18 and atmosphere.
This enforcement operating process is：4 parts of samples 13 are weighed in 4 digestion tubes 12 respectively, is covered tightly and is cleared up lid 8, often
Individual lid 8 of clearing up connects tube for transfusion 5 and appendix 17, cut-out tap 9 respectively.Adjust thermoregulation knob 16 to be heated to digestion tube 12
Proper temperature.After temperature stabilization, air pressure regulator 23 is adjusted to 50kPa, adjust flow control valve 25 and be slowly continuously added to
Digestion solution 3.Situation is cleared up according to each digestion tube 12 suitably adjust each flow control valve 25 and thermoregulation knob 16 and disappeared with adjusting
Solution liquid adds speed and heating-up temperature, until sample 13 is cleared up completely, closes air pressure regulator 23 and graphite heating device 10, opens
Cock 9 is opened, digestion tube 12 after cooling, is removed, transfer, constant volume, digestion process are completed.
The above is only two kinds of preferred implementations of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of continuous liquid adding type clears up instrument, including feed flow module, clears up module, heating module, vent gas treatment module, its feature
It is：
The feed flow module, clear up module, vent gas treatment module and be sequentially connected, the relative closed system of composition；
The feed flow module is automatic continuous liquid feed device, can clear up unit for one or more simultaneously and persistently provide digestion solution,
Liquid feeding velocity-stabilization is controllable；
The module of clearing up includes that one or more clear up unit, respectively clear up unit can synchronous complete independently sample clear up；
The heating module is temperature controlled heater, can be while uniformly heating one or more clears up unit；
The whole harmful gass produced in digestion process are carried out harmless treatment by the vent gas treatment module.
2. a kind of continuous liquid adding type as claimed in claim 1 clears up instrument, it is characterised in that the feed flow module includes liquid storage
Bottle, tube for transfusion and pump.
3. a kind of continuous liquid adding type as claimed in claim 2 clears up instrument, it is characterised in that the liquid containing bottle has liquid storage bottle cap,
Have on liquid containing bottle lid for balancing the hole of pressure；Liquid containing bottle, liquid storage bottle cap, tube for transfusion are acidproof material；Pump can convey strong oxygen
The property changed acid simultaneously can continue feed flow for one or more pipelines simultaneously, and liquid supply speed stable homogeneous are adjustable, range of accommodation for 0 ~
10mL/min, adjusts step-length and is less than 0.1mL/min.
4. a kind of continuous liquid adding type as claimed in claim 1 clears up instrument, it is characterised in that the unit of clearing up includes digestion tube
And lid is cleared up, there are two holes on digestion tube lid, connect tube for transfusion and appendix respectively, digestion tube and lid is cleared up for heat-resisting resistance to
Sour material, it is salable after screwing, sequentially it is placed on heating module.
5. a kind of continuous liquid adding type as claimed in claim 1 clears up instrument, it is characterised in that the temperature controlled heating dress
Put, temperature controlling range is room temperature to 400 DEG C.
6. a kind of continuous liquid adding type as claimed in claim 1 clears up instrument, it is characterised in that the vent gas treatment module includes delaying
Rush bottle, appendix, surge flask communicating pipe, vent gas treatment bottle and vent gas treatment bottle communicating pipe.
7. a kind of continuous liquid adding type as claimed in claim 6 clears up instrument, it is characterised in that have buffering bottle cap on surge flask, can
Sealing, has an appropriate number of hole to insert appendix and surge flask communicating pipe on surge flask lid, surge flask has cock on communicating pipe
To switch gas circuit；There is vent gas treatment bottle cap on vent gas treatment bottle, have an appropriate number of hole to insert gas transmission on vent gas treatment bottle cap
Pipe and vent gas treatment bottle communicating pipe；Surge flask, buffering bottle cap be acidproof material, appendix, vent gas treatment bottle, vent gas treatment bottle cap
Acid and alkali resistance material is with vent gas treatment bottle communicating pipe；Digestion solution is filled in the liquid containing bottle, in vent gas treatment bottle, alkali is filled
Liquid.
8. a kind of continuous liquid adding type as claimed in claim 1 clears up instrument, it is characterised in that the liquid containing bottle and pump, pump and disappear
Solution lid is connected by tube for transfusion respectively；Clear up lid to connect by appendix with surge flask, surge flask and vent gas treatment bottle respectively
It is logical, below appendix vent gas treatment bottle end insertion alkali liquor liquid level；Vent gas treatment bottle communicating pipe is connected with air or air pump, tail gas
Process bottle communicating pipe lower end to be maintained at more than alkali liquor liquid level.
9. a kind of continuous liquid adding type as claimed in claim 1 clears up instrument, it is characterised in that the waste gas produced in digestion process is complete
Portion is processed through surge flask and vent gas treatment bottle, and acid gas condenses recovery, nitrogen oxides quilt in vent gas treatment bottle in surge flask
Fully absorb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069749.5A CN106596245A (en) | 2017-02-08 | 2017-02-08 | Continuous liquid feeding type digestion instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069749.5A CN106596245A (en) | 2017-02-08 | 2017-02-08 | Continuous liquid feeding type digestion instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106596245A true CN106596245A (en) | 2017-04-26 |
Family
ID=58586886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710069749.5A Withdrawn CN106596245A (en) | 2017-02-08 | 2017-02-08 | Continuous liquid feeding type digestion instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106596245A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860640A (en) * | 2017-11-03 | 2018-03-30 | 同济大学 | A kind of Portable heating resolution instrument and its application method for water sample pretreatment |
| CN111175116A (en) * | 2020-01-20 | 2020-05-19 | 上海海洋大学 | Automatic visual acid-dispelling device |
| CN112557143A (en) * | 2020-12-24 | 2021-03-26 | 生态环境部南京环境科学研究所 | A soil sample pretreatment device for lead-zinc slay heavy metal content detects |
| CN112629998A (en) * | 2021-01-06 | 2021-04-09 | 三门核电有限公司 | Device and method for analyzing and preprocessing total alpha and beta in primary loop medium of nuclear power plant |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860640A (en) * | 2017-11-03 | 2018-03-30 | 同济大学 | A kind of Portable heating resolution instrument and its application method for water sample pretreatment |
| CN111175116A (en) * | 2020-01-20 | 2020-05-19 | 上海海洋大学 | Automatic visual acid-dispelling device |
| CN111175116B (en) * | 2020-01-20 | 2021-04-30 | 上海海洋大学 | Automatic visual acid-dispelling device |
| CN112557143A (en) * | 2020-12-24 | 2021-03-26 | 生态环境部南京环境科学研究所 | A soil sample pretreatment device for lead-zinc slay heavy metal content detects |
| CN112557143B (en) * | 2020-12-24 | 2021-12-21 | 生态环境部南京环境科学研究所 | A soil sample pretreatment device for lead-zinc slay heavy metal content detects |
| CN112629998A (en) * | 2021-01-06 | 2021-04-09 | 三门核电有限公司 | Device and method for analyzing and preprocessing total alpha and beta in primary loop medium of nuclear power plant |
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Application publication date: 20170426 |
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