CN102221497A - Water sample pretreatment device - Google Patents
Water sample pretreatment device Download PDFInfo
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- CN102221497A CN102221497A CN 201110069993 CN201110069993A CN102221497A CN 102221497 A CN102221497 A CN 102221497A CN 201110069993 CN201110069993 CN 201110069993 CN 201110069993 A CN201110069993 A CN 201110069993A CN 102221497 A CN102221497 A CN 102221497A
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Abstract
The invention provides a water sample pretreatment device, comprising a water inlet, a filtration component and a water outlet. And the device further includes a heating component installed between the water inlet and the filtration component for heating a water sample to a predetermined temperature, and an ultraviolet digestion component disposed between the water inlet and the filtration component for conducting ultraviolet digestion to the water sample. The device performs heating and ultraviolet digestion treatment to the water sample before filtration, so that solid phosphorous organic substances and nitrogenous organic substances can dissolve in water after decomposition and avoid being filtered out. Thus, the reliability and objectivity of monitoring and measurement of the water sample pretreatment device are improved. In addition, as part of the solid organic substances is fully dissolved, occurrence of blockage and inconvenience in cleaning are reduced. Therefore, the filtration speed is improved.
Description
Technical field
The present invention relates to water treatment field, relate in particular to a kind of water sample pretreatment unit.
Background technology
Along with the continuous deterioration in bad border, the whole world, environmental pollution more and more comes seriously, and especially the pollution of water body is very serious.Water is Source of life, at present the attention that pollutes each country of the quality problems of potable water and river, river, lake, seawater.Realize sustainable development in order to carry out and implement the Scientific Outlook on Development,, need strict water sample monitoring system for the response environment burst accident.Wherein the water sample pre-service is an important step of water sample monitoring system.
At present, the water sample pretreatment unit adopts filter element to come the solid matter in the water sample is filtered, and filter element can adopt modes such as double pump filtration, the filtration of single pump or vacuum filtration.The suction filter pump that is adopted can be peristaltic pump, membrane pump, vacuum filtration pump or air compressor machine or the like, but this type of device just simply carries out filtration treatment to water sample, and in the time will measuring total nitrogen in the water sample, total phosphorus concentration, organism such as a part is phosphorous, nitrogenous are to exist in the solid mode, are easy to be filtered when filtering with traditional method.Cause measurement result inaccurate like this, not objective.Original water sample pretreatment unit filtration time liquid is longer, stops up easily, cause and clean inconvenience, and volume is big, power consumption is big, and it is very inconvenient to carry.
Summary of the invention
At measuring inaccurate problem in the prior art, the invention provides a kind of water sample pretreatment unit.
For this reason, the invention provides a kind of water sample pretreatment unit, comprise water inlet, filter element and water delivering orifice, also comprise: heater block, be arranged between water inlet and the filter element, water sample is heated to predetermined temperature; Ultraviolet is cleared up parts, is arranged between water inlet and the filter element, water sample is carried out ultraviolet clear up.
Further, comprise that control module controls the heating-up temperature of heater block and the ultraviolet digestion time that ultraviolet is cleared up parts.
Further, ultraviolet is cleared up parts and comprised: digestion pool is used to hold water sample; Ultraviolet mercury lamp is arranged at around the digestion pool or is arranged at the inside of digestion pool.
Further, heater block comprises heating resistor, is built in the digestion pool or is arranged on the bottom of digestion pool or all around.
Further, also comprise: thermistor, be built in the digestion pool, and induction TWS T; Control panel is used to set default heating-up temperature T
0With default ultraviolet digestion time; Control module is connected with thermistor, receives the TWS T of induction, when T less than T
0, then heating resistor is carried out the heating instruction, when T greater than T
0, then heating resistor is carried out to stop to heat and instructs; The ultraviolet digestion time that control module is also cleared up by timer control ultraviolet.
Further, control module can also be carried out the pipeline cleaning by the cleaning button of control panel.
Further, filter element comprises: first suction filter pump links to each other with digestion pool; Switch links to each other with first suction filter pump; The water sample millipore filter is provided with filter membrane, and links to each other with switch; Second suction filter pump links to each other with the water sample millipore filter.
Further, heating resistor is a U type resistive heater.
Further, first suction filter pump and second suction filter pump are peristaltic pump, membrane pump, vacuum filtration pump or air compressor machine.
Further, control module adopts storage battery power supply or chamber electricity power supply.
Water sample pretreatment unit provided by the invention, realized following advantage:
(1) before filtration water sample heated with ultraviolet and clear up processing, it is water-soluble to make that the organism such as phosphorous, nitrogenous that exists with solid form decomposes the back, prevents that it is filtered, and has improved the reliability and the objectivity of the control measurement of water sample pretreatment unit;
(2) owing to after the part solid organic matters fully dissolves, reduced the appearance of stopping state and the inconvenience of cleaning, improved the speed of filtering;
In addition, when water sample pretreatment unit provided by the invention adopts temperature automatically controlled accurately and control, improve pre-service efficient, shortened the water sample pre-processing period; Whole apparatus structure is simple, and control module can adopt storage battery power supply, and is easy to carry.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.With reference to figure, the present invention is further detailed explanation below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation according to the double pump filtration of the water sample pretreatment unit of the embodiment of the invention;
Fig. 2 shows the structural representation according to single pump filtration of the water sample pretreatment unit of the embodiment of the invention;
Fig. 3 shows the structural representation according to the vacuum filtration of the water sample pretreatment unit of the embodiment of the invention;
Fig. 4 shows the control relation synoptic diagram according to the water sample pretreatment unit of the embodiment of the invention; And
Fig. 5 shows the control panel synoptic diagram according to the water sample pretreatment unit of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but following embodiment and accompanying drawing only are in order to understanding the present invention, and can not limit the present invention, the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 1 shows the structural representation according to the double pump filtration of the water sample pretreatment unit of the embodiment of the invention.As shown in Figure 1, the water sample pretreatment unit comprises water inlet, filter element and water delivering orifice, also comprises: heater block, be arranged between water inlet and the filter element, and water sample is heated to predetermined temperature; Ultraviolet is cleared up parts, is arranged between water inlet and the filter element, water sample is carried out ultraviolet clear up.
For example in the detection of carrying out total nitrogen, to in 120 ℃～124 ℃ alkaline medium environment, carry out, add the potassium persulfate oxygenant, after ammonia, ammonium salt, nitrate and most of organonitrogen compound are oxidized to nitrate in the water sample, carry out the mensuration of total nitrogen with the form employing gas-phase molecular absorption spectrometry method of nitrate nitrogen.So just need be heated to certain temperature to water sample, and adopt the UV-irradiation of certain intensity, the ultraviolet light of certain intensity is converted into nitrate radical to itrogenous organic substance and plays catalytic action, promoted the dissolving of nitrogenous fixture, prevent that it is filtered, improved the reliability and the objectivity of the control measurement of water sample pretreatment unit.
As shown in Figure 1, wherein filter element comprises first suction filter pump 3, links to each other with digestion pool 1; Switch 5 links to each other with first suction filter pump 3; Water sample millipore filter 2 is provided with filter membrane, and links to each other with switch 5; Second suction filter pump 4 links to each other with water sample millipore filter 2, and water sample flows to water sampling cup 9 through filtering the back by water delivering orifice.Water sample millipore filter 2 adopts stainless steel, its membrane filtration precision can be changed as requested, select the filter membrane in different apertures, also can adopt the disposable filtering film, filtering the end back only needs the nut of filtrator is just backed out and can have been changed filter membrane very easily, and first suction filter pump 3, second suction filter pump 4 and water sample millipore filter 2 all are fixed on the installation panel.
Fig. 2 shows the structural representation according to single pump filtration of the water sample pretreatment unit of the embodiment of the invention; Fig. 3 shows the structural representation according to the vacuum filtration of the water sample pretreatment unit of the embodiment of the invention; As shown in Figure 2, single pump filtration and double pump filtration are similar substantially, have just only adopted a suction filter pump 31 to filter.As shown in Figure 3, vacuum filtration is water sampling cup 9 next doors that a suction filter pump 32 placed the opening sealing, and an end places among the water sampling cup 9, and an other end communicates with atmosphere.
The suction filter pump that double pump filters and single pump filters is a peristaltic pump, also can be membrane pump, vacuum filtration pump or air compressor machine, and the suction filter pump of vacuum filtration is preferably the vacuum filtration pump, but also can be peristaltic pump, membrane pump or air compressor machine.Though the type of the version of filter element and the suction filter pump of employing can change to some extent according to practical application, all should be within protection scope of the present invention.
Wherein, ultraviolet is cleared up parts and is comprised digestion pool 1, is used to hold water sample, digestion pool 1 is selected glass material, require strong, heat-resisting, the anti-ultraviolet irradiation of light transmission and corrosion-resistant, the bottleneck bore of digestion pool 1 can be adjusted size as requested, also can seal with ground glass stopper as required; Ultraviolet mercury lamp 8 is provided with one or many and is surrounded on around the digestion pool 1, also can be arranged on digestion pool 1 inside, improves the water sample ultraviolet as much as possible and clears up rate.Heater block comprises heating resistor 6, is built in the digestion pool 1, can adopt U type resistive heater, makes shorten heat time heating time, and power consumption reduces, and heater block 6 also can be arranged on the bottom of digestion pool 1 or all around.In real work, can select to be provided with 4 ultraviolet mercury lamps 8 around being built in the digestion pool 1 with 2 U type resistive heaters 6 around the digestion pool 1.Because ultraviolet ray is harmful, so glass sample pretreatment unit digestion pool 1 is wanted shading sealing work.
The water sample pretreatment unit comprises that also control module controls the heating-up temperature of heater block and the ultraviolet digestion time that ultraviolet is cleared up parts, and Fig. 4 has specifically illustrated the control relation synoptic diagram according to the water sample pretreatment unit of the embodiment of the invention.Thermistor 7 is built in the digestion pool 1, is convenient to the accurate detection and the control of temperature, induction TWS T; Control panel 10 is used to set default heating-up temperature T
0With default ultraviolet digestion time; Control module is connected with thermistor 7, receives the TWS T of induction, when T less than T
0, then heating resistor 6 is carried out the heating instruction, when T greater than T
0, then heating resistor 6 is carried out to stop to heat and instructs, so that water sample remains on default heating-up temperature T
0Control module is also cleared up the ultraviolet digestion time of parts by timer control ultraviolet.Control module can also be carried out pipeline by the cleaning button of control panel 10 and be cleaned.
Wherein, thermistor 7, heating resistor 6 and ultraviolet mercury lamp 8 link to each other with control panel 10 by lead respectively, realize the accurate control of heating-up temperature and digestion time.Heating resistor 6 and thermistor 7 will pass digestion pool 1 from the punching of digestion pool 1 side respectively, and will have silica gel sealing this moment, places leakage.Thermistor 7 can be platinum resistance, and control module adopts accumulator to power, also can indoor power supply, and two kinds of powering modes can switch.Accumulator is generally expired behind the electricity can continuous firing more than 4 hour, adds this device lighter weight, and volume is less, thus easy to carry, can handle emergency in the open air in the long period.
Fig. 5 shows the control panel synoptic diagram according to the water sample pretreatment unit of the embodiment of the invention.In the course of the work, water sampling injects glass sample pretreating containers digestion pool 1, then carry out the default of heating-up temperature and heat time heating time, as shown in Figure 5, the button 12 by control panel 10 sets ultraviolet digestion time minute, heating-up temperature degree centigrade, shows the parameter that is provided with simultaneously on the group of four figures pipe 11 of control panel 10, the demonstration position of group of four figures pipe 10 is respectively that ten of time are set from left to right, the position of time is set, ten of temperature are set, a position of temperature is set.The setting ENTER key in 12 that pushes button after finishing, this moment, ultraviolet mercury lamp 8 and heating resistor 6 were started working, at this time group of four figures pipe shows is respectively ten of ultraviolet digestion time from left to right, a position of ultraviolet digestion time, ten of current detection temperature, a position of current detection temperature.By the control principle of above-mentioned control module, water sample will remain on to heat with ultraviolet under the temperature of setting always to be cleared up, through stopping automatically after the default time.After heating and clearing up is finished, open the filtration treatment of first suction filter pump 3 and second suction filter pump 4 beginning water samples.Connect the water inlet of suction filter pump 3 after digestion pool 1 water outlet, water delivering orifice by first suction filter pump 3 passes through the inlet of switch 5 to water sample millipore filter 2 again, again by the water inlet that exports to second suction filter pump 4 of water sample millipore filter 2, gather to water sampling cup 9 by the water delivering orifice of suction filter pump 4 at last, obtain comparison clear water sample at last.Make organism such as phosphorous, nitrogenous dissolve as much as possible by the water sample that obtains after this a series of processing, place and be filtered, and impurity also obtains sufficient filtration, made more science, more accurate of testing result.
This device pipeline cleans also more convenient, after filtering process finishes, off switch 5, the nut of then backing out water sample millipore filter 2 takes out filter membrane and nut is tightened again, in glass sample pretreating containers digestion pool 1, inject distilled water, open switch 5, after control panel 10 is pressed the CLR key, control module will offer first suction filter pump, 3 OPENs, first suction filter pump 3 is started working, ceaselessly inject distilled water by following pipeline, after the effect that reaches cleaning, press cancel key once more, clean and finish by digestion pool 1.
Though we have only carried out detailed elaboration for the workflow of double pump structure here, but this workflow is filtered same being fit to for single pump, and against vacuum filters, just in this process, do not adopt suction filter pump at pipeline, but suction filter pump 32 is placed water sampling cup 9 one sides, adopt suction filter pump that the gas in the water sampling cup 9 is constantly extracted out, make that pressure is lower than external pressure in the water sampling cup 9, impel sampled water flows downward.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
(1) before filtration water sample heated with ultraviolet and clear up processing, it is water-soluble to make that the organism such as phosphorous, nitrogenous that exists with solid form decomposes the back, prevents that it is filtered, and has improved the reliability and the objectivity of the control measurement of water sample pretreatment unit;
(2), improved the speed of filtering because after the part solid organic matters fully dissolved, that filters like this was more abundant, and has reduced the appearance of stopping state and the inconvenience of cleaning;
In addition, when water sample pretreatment unit provided by the invention adopts temperature automatically controlled accurately and control, improve pre-service efficient, shortened the water sample pre-processing period; Whole apparatus structure is simple, and control module can adopt storage battery power supply, and is easy to carry.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a water sample pretreatment unit comprises water inlet, filter element and water delivering orifice, it is characterized in that, also comprises:
Heater block is arranged between described water inlet and the described filter element, and described water sample is heated to predetermined temperature;
Ultraviolet is cleared up parts, is arranged between described water inlet and the described filter element, described water sample is carried out ultraviolet clear up.
2. water sample pretreatment unit according to claim 1 is characterized in that, further comprises:
Control module is controlled the heating-up temperature of described heater block and the ultraviolet digestion time that described ultraviolet is cleared up parts.
3. water sample pretreatment unit according to claim 1 and 2 is characterized in that, described ultraviolet is cleared up parts and comprised:
Digestion pool (1) is used to hold described water sample; Ultraviolet mercury lamp (8) is arranged at described digestion pool (1) or be arranged at the inside of described digestion pool (1) on every side.
4. water sample pretreatment unit according to claim 3 is characterized in that, described heater block comprises:
Heating resistor (6) is built in the described digestion pool (1) or is arranged on the bottom of described digestion pool (1) or all around.
5. water sample pretreatment unit according to claim 3 is characterized in that, also comprises:
Thermistor (7) is built in the described digestion pool (1), and induction TWS T;
Control panel (10) is used to set default heating-up temperature T
0With default ultraviolet digestion time;
Described control module is connected with described thermistor (7), receives the described TWS T of induction, when T less than T
0, then described heating resistor (6) is carried out the heating instruction, when T greater than T
0, then described heating resistor (6) is carried out to stop to heat and instructs, so that temperature remains on described default heating-up temperature T
0
Described control module is controlled the ultraviolet digestion time that described ultraviolet is cleared up parts by timer.
6. water sample pretreatment unit according to claim 5 is characterized in that, described control module is also carried out the pipeline cleaning by the cleaning button of described control panel (10).
7. water sample pretreatment unit according to claim 3 is characterized in that, described filter element comprises:
First suction filter pump (3) links to each other with described digestion pool (1);
Switch (5) links to each other with described first suction filter pump (3);
Water sample millipore filter (2) is provided with filter membrane, and links to each other with described switch (5);
Second suction filter pump (4) links to each other with described water sample millipore filter (2).
8. water sample pretreatment unit according to claim 4 is characterized in that, described heating resistor (6) is a U type resistive heater.
9. water sample pretreatment unit according to claim 7 rises and is characterised in that described first suction filter pump (3) and second suction filter pump (4) can be peristaltic pump, membrane pump, vacuum filtration pump or air compressor machine.
10. water sample pretreatment unit according to claim 2 is characterized in that, described control module adopts storage battery power supply or chamber electricity power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110069993 CN102221497B (en) | 2011-03-22 | 2011-03-22 | Water sample pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110069993 CN102221497B (en) | 2011-03-22 | 2011-03-22 | Water sample pretreatment device |
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| Publication Number | Publication Date |
|---|---|
| CN102221497A true CN102221497A (en) | 2011-10-19 |
| CN102221497B CN102221497B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110069993 Active CN102221497B (en) | 2011-03-22 | 2011-03-22 | Water sample pretreatment device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398886A (en) * | 2013-08-07 | 2013-11-20 | 苏州扬清芯片科技有限公司 | Online water quality digestion system |
| CN103499469A (en) * | 2013-10-22 | 2014-01-08 | 中国海洋大学 | Automatic water sample receiving and filtering device |
| CN104614225A (en) * | 2015-02-07 | 2015-05-13 | 杭州安控环保科技有限公司 | Ultraviolet light catalysis electrical heating and decomposing device |
| CN104819890A (en) * | 2015-05-08 | 2015-08-05 | 中国科学院电子学研究所 | Digestion method and digestion apparatus of total phosphorus of water quality |
| CN111912695A (en) * | 2020-07-07 | 2020-11-10 | 苏州艾驰博特检测科技有限公司 | Digestion and filtration combined experimental device |
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| JPH10142216A (en) * | 1996-11-09 | 1998-05-29 | Horiba Ltd | Total nitrogen measuring device |
| JP2005098992A (en) * | 2003-08-26 | 2005-04-14 | Dkk Toa Corp | Oxidization decomposition cell |
| US20070216895A1 (en) * | 2006-03-15 | 2007-09-20 | Fujitsu Limited | Fine particle measurement apparatus with exhaust purification function |
| CN202013300U (en) * | 2011-03-22 | 2011-10-19 | 湖南力合科技发展有限公司 | Water sample pre-processing device |
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2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10142216A (en) * | 1996-11-09 | 1998-05-29 | Horiba Ltd | Total nitrogen measuring device |
| JP2005098992A (en) * | 2003-08-26 | 2005-04-14 | Dkk Toa Corp | Oxidization decomposition cell |
| US20070216895A1 (en) * | 2006-03-15 | 2007-09-20 | Fujitsu Limited | Fine particle measurement apparatus with exhaust purification function |
| CN202013300U (en) * | 2011-03-22 | 2011-10-19 | 湖南力合科技发展有限公司 | Water sample pre-processing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398886A (en) * | 2013-08-07 | 2013-11-20 | 苏州扬清芯片科技有限公司 | Online water quality digestion system |
| CN103499469A (en) * | 2013-10-22 | 2014-01-08 | 中国海洋大学 | Automatic water sample receiving and filtering device |
| CN103499469B (en) * | 2013-10-22 | 2015-09-16 | 中国海洋大学 | Water sample automatic reception filtration unit |
| CN104614225A (en) * | 2015-02-07 | 2015-05-13 | 杭州安控环保科技有限公司 | Ultraviolet light catalysis electrical heating and decomposing device |
| CN104819890A (en) * | 2015-05-08 | 2015-08-05 | 中国科学院电子学研究所 | Digestion method and digestion apparatus of total phosphorus of water quality |
| CN111912695A (en) * | 2020-07-07 | 2020-11-10 | 苏州艾驰博特检测科技有限公司 | Digestion and filtration combined experimental device |
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| Publication number | Publication date |
|---|---|
| CN102221497B (en) | 2013-04-17 |
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Address after: 7, building 410013, Jin Xin building, hi tech Industrial Development Zone, Changsha, Hunan, Changsha Applicant after: Lihe Technology (Hunan) Co.,Ltd. Address before: 7, building 410013, Jin Xin building, hi tech Industrial Development Zone, Changsha, Hunan, Changsha Applicant before: Hu'nan Lihe Science and Technoogy Development Co., ltd. |
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Inventor after: Zou Xiongwei Inventor after: Cai Zhi Inventor after: Huang Kai Inventor after: Yang Jun Inventor after: Xiong Chunhong Inventor after: Li Shuyun Inventor after: Tong Shehua Inventor after: Wen Liqun Inventor before: Zou Xiongwei Inventor before: Cai Zhi Inventor before: Huang Kai Inventor before: Yang Jun Inventor before: Xiong Chunhong Inventor before: Li Shuyun Inventor before: Tong Shehua Inventor before: Wen Liqun |
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