CN202204721U - Small dispelling machine - Google Patents
Small dispelling machine Download PDFInfo
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- CN202204721U CN202204721U CN2011202781977U CN201120278197U CN202204721U CN 202204721 U CN202204721 U CN 202204721U CN 2011202781977 U CN2011202781977 U CN 2011202781977U CN 201120278197 U CN201120278197 U CN 201120278197U CN 202204721 U CN202204721 U CN 202204721U
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- heat insulating
- derby
- insulating panel
- test tube
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Abstract
The utility model discloses a small dispelling machine, which comprises a housing, a cooling system, a heat insulating panel, a metal block, a heating element and a heat insulating plate, wherein the heating element is arranged at the bottom of the metal block; the cooling system, the heating element, the metal block and the like are arranged in the housing; the heat insulating plate is arranged between the heating element and the bottom of the housing; and a plurality of sunken holes are opened on the top of the metal block. In the small dispelling machine disclosed by the utility model, a fan is arranged in the housing, and tightly adjacent to the heating test tube; the lower part of an air flow channel of the fan is communicated with the internal chamber of the base while the upper part thereof is faced to the heat insulating panel; air flow at the upper part of the fan can be acted on the exposed test tube wall, so as to obviously reduces the temperature and pressure of the steam in the test tube; the safety in operation can be greatly improved, so that the small dispelling machine can be safer and more reliable, and precise testing result can be obtained.
Description
Technical field
The utility model relates to a kind of testing equipment, particularly relates to a kind of small-sized machine of clearing up.
Background technology
Organic carbon, nitrogen and phosphorus are water quality, particularly three of wastewater test most important chemical index.Organic carbon is normally measured with chemical oxygen consumption (COC) (COD): water sample is with after the concentrated sulphuric acid that contains dichromate of equivalent mixes, and 148 ° of C cleared up 2 hours at boiling point.In the standard testing, acid distillation can and be collected the back and reflux because of the sufficiently long condensation portion condensation in container (test tube) top, and the condenser top is an opening, makes under normal pressure, to carry out work with general operation.Possibly need 1 to 2 meter long for reaching this purpose condensation portion.JIRKA in 1975 and CARTER (analytical chemistry 47 1397-1402) use 3.5ml water sample+1.5ml reagent with this method of testing miniaturization, are contained in the 16x100mm test tube of lid.Commercialization method is afterwards used the 2ml water sample+2ml reagent of standard usually, with the concentrated sulphuric acid and crystalline sulfuric acid mercury.Because container seals, pressure heater of picture works together.The pressure that increases makes and is necessary with counteract appearance from the external adjustment temperature.Thermotonus device or claim counteract appearance has recessed circular hole holding test tube on its heat block, and is 148 ° of C of constant temperature with adjustment.In great majority commercial counteract appearance on the market, the shrinkage pool on the heat block is too dark usually, and the test tube that a semiliquid almost will be housed usually buries.Consequently the inner high pressure of pipe not only brings operational danger, and can cause the part material to be escaped through the threaded line pipe cover under the HTHP.Finally COD result departs from actual value when measuring with tintmeter.Therefore, with boiling hot, the COD test tube of the too many mercurous concentrated sulphuric acid of interior dress has been come into contacts with into operation the most dangerous in the water quality detection of laboratory.
In 2008, German Bodart (Labo (Darmstadt)
2/0818-21) point out; In the framework/test tube of present commodity COD digestion device; Its working method not only runs counter to DIN, the distillation low pressure condensing reflux that the official standard method that ISO and US-EPA announce is indicated, and cause unnecessary being easy to produce error result.Condenser according to distillation should be cooled rather than be heated, and Bodart points out that the liquid of adorning in the test tube is no more than the height of test tube 1/3rd, and this highly enough uses the photometer test, and the degree of depth that test tube inserts counteract appearance is only till the liquid level.Like this, the part on test tube top 2/is 3 cooled off because of ingress of air natural convection, and the result is the temperature and pressure that has reduced the gas phase part, thereby greatly reduces the danger in the operation.
The utility model content
The purpose of the utility model is the small-sized machine of clearing up that provides a kind of security performance good.
For realizing above-mentioned purpose, the technical solution of the utility model is:
The utility model is a kind of small-sized machine of clearing up, and it comprises casing, cooling system, heat insulating panel, derby, heating element, thermal insulation board; Frame and base before described casing comprises, preceding frame is arranged in the front portion of base, and the bottom, fan installation position on the preceding frame communicates with base intracavity; Described heating element is installed in the bottom of derby, and heating element is installed in base intracavity with derby, between heating element and base inner bottom surface, is provided with thermal insulation board, offers the counterbore that a plurality of confession test tubes insert at the derby end face; Described heat insulating panel covers the open end on chassis base top, on heat insulating panel, offers a plurality of through holes, and the counterbore on these a plurality of through holes and derby top is relative, so that test tube inserts and is nested with in the derby counterbore; Described cooling system is installed on the cooling system installation position of former frame, and the lower stream of airflow passage of cooling system communicates with base intracavity, and the upper air passage of cooling system is facing to being loaded on the test tube on the heat insulating panel.
Described cooling system is an axial flow blower.
The utility model also comprises control heat insulating panel and control circuit board; Described control circuit board is installed in the preceding frame of casing, and the control heat insulating panel covers on the former frame.
Described heat insulating panel is Teflon plate or similar corrosion-and high-temp-resistant material.
The described counterbore degree of depth is less than 1/3rd of the test tube degree of depth.
After adopting such scheme, because the utility model is provided with a desk fan in casing, this fan is closely adjacent with the heating test tube; The gas channel bottom of fan communicates with base intracavity, is the interior radiating and cooling, and the gas channel top of fan is facing to heat insulating panel; The upper air of fan can act on the test tube wall of exposure; Can significantly reduce in vitro vapor (steam) temperature and pressure, reduce the danger of operation greatly, make the more safe and reliable of the utility model.
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.
Description of drawings
Fig. 1 is the axonometric drawing of the utility model;
Fig. 2 is the cut-open view of the utility model.
Embodiment
Like Fig. 1, shown in Figure 2, the utility model is a kind of small-sized machine of clearing up, and it comprises casing 1, cooling system 2, heat insulating panel 3, derby 4, heating element 5, thermal insulation board 6, control panel 7 and control circuit board 8.
In the present embodiment, cooling system 2 is an axial flow blower, and promptly fan 2.
Described heating element 5 is installed in the bottom of derby 4, and heating element 5 is installed in base 12 inner chambers with derby 4
Between heating element 5 and base 12 inner bottom surfaces, be provided with thermal insulation board 6, offer the counterbore 41 that a plurality of confession test tubes 10 insert at derby 4 end faces; Described heat insulating panel 3 adopts the Teflon plate; It covers the open end on casing 1 base 12 tops; On heat insulating panel 3, offer a plurality of through holes 31, the counterbore 41 on these a plurality of through holes 31 and derby 4 end faces is relative, so that test tube 10 inserts and is nested with in derby 4 counterbores 41.
Described fan 2 is installed on the fan installation position of former frame; The gas channel F of fan 2 is a horizontal direction, and the lower stream of airflow passage of fan 2 communicates with base 12 inner chambers, and the upper air passage of fan 2 is facing to heat insulating panel 3; The lower stream of airflow passage of described fan 2 accounts for 25% of total air flow passage; Be used to casing 1 inner ventilation, the upper air passage of fan 2 accounts for 75% of total air flow passage, is used to cool off the expose portion of test tube 10.
Described control circuit board 8 is installed in the preceding frame 11 of casing 1, and control panel 7 covers on the former frame 11.
The explanation of the utility model design details:
Relative assembly comprises a thermotonus device that significant improvement is arranged compared with at present general commercial product.Design is foundation to use purpose, rather than puts the cart before the horse.The essential part of utility model comprises a cheapness, reliable commercial cooling fan 2, such as specification 120x120x38mm fan common in the computer.Fan 2 directly is close to derby 4, and latter's width is no more than the air-flow coverage that blows out.Test tube 10 above the derby 4 is apart from only several centimetres in fan 2.As an example; The test tube 10 of the high 100mm of diameter 16mm, interior dress 1.6ml water sample and 1.6ml sulfuric acid mixture also insert derby 4, insertion depth 23mm; Derby 4 tops can cover a protection thin plate with holes; Thickness 2-5mm, material are Teflon (PTFE), and and derby 4 between the have an appointment clearance of 1mm.
As the part of design, the liquid level level that its inner water sample adds acidic mixture is deferred in the degree of depth strictness that test tube 10 inserts derby 4, and this liquid level level is taken at test tube 10 can be done Validity Test in photometer floor level.Like this, the major part of test tube 10 (not adorning the part of liquid) just obtains cooling because of next-door neighbour's cooling fan 2.In digestion process, test tube 10 inner vapor (steam) temperature and pressure are significantly reduced.The test tube 10 of most of commercial COD counteract appearances almost all inserts derby 4, and its top is about 120 ° near the vapor (steam) temperature of pipe cover.And in the utility model device, this temperature drops to 40 ° or lower.Powerful airflow acts on test tube 10 walls that expose to the open air, causes internal pressure significantly to reduce, thus the open system of the distillation condensing reflux that requires near the formal method of official more.Distillation is effectively cooled off, and gets back in the 148 degree liquid of bottom as condensation product, unlikelyly like this produces the material leakage that pipe covers liner because of overvoltage, or Yin Gaowen and the corrosion that causes.
Portable desktop counteract appearance as desirable has used small and exquisite shell, but Just because of this, isolates even derby 4 obtains good heat, also can cause the influence of heat.Exert an influence promptly not only to sheathing material (metal or plastics), and to heat sensitive internal electronic component, thereby possibly influence the accuracy of temperature control or time control.The utility model has solved this problem through the height and position of adjustment fan 2: about 25% part in air-flow bottom is used to do enclosure interior and ventilates, and all the other air-flows of 75% are used for cooling off the exposed portion of test tube 10.
The water analysis worker also usually need analyze total nitrogen and total phosphorus as nitrate and orthophosphate except needs Analysis for CO D.Both can do colorimetrically analysing the back, and it exists with the various forms that are not suitable for colorimetric analysis in water sample usually, such as protein and polyphosphate.Need at first use persulfate oxidation it is cleared up in the analysis for being fit to carry out the colorimetric test.Tradition is cleared up mode and is initially 100 ° of C, 60 minutes, in more novel counteract appearance, is improved to 120 ° of C, 30 minutes.In the utility model, because heating test tube 10 is related with the pressure of cooling fan 2, digestion time further shortens to 15 minutes.Why like this, be because the i.e. 148 ° of C of the digestion condition that temperature is brought up to COD, and former, owing to there is not the forced air convection cooling technology in similar the utility model, can not use so high aqueous temperature.
Although in COD clears up, temperature, the combination of time requires all standardization, and clearing up of total nitrogen total phosphorus do not had the temperature of standard, time requirement.No matter final product importantly is and its production process and condition.The utility model provides a kind of digestion instrument of simplifying greatly, uses 148 ° of temperature of single standard, and time set has only 15 minutes and 120 minutes two grades.
The method of operating of the utility model:
140 ° of-200 ° of C of the operating temperature range of the utility model; Heating target is upright; Bore/length is than being the glass tube of 1:3 to 1:30; Upright cooling fan 2 or the air outflow port of these glass tubes next-door neighbour, airflow quilt physically (entity ground) is divided into two parts, respectively the glass tube walls of cooling outside and the heat block and the electronic devices and components of interior.Its fan 2 blade faces or any glass tube walls 5-200mm of air stream outlet distance.Liquid level is between 10 to 70mm in arbitrary glass tube.On its heat block each placed the pothole degree of depth of glass tube corresponding to adorning liquid level in the glass tube, error+/-30%., the air-flow that blows out is with at least 5 ° of C of partial portion cooling of all glass tubes.Through fan 2 or air-flow are changed to built-in, perhaps with such as semiconductor refrigerating original paper (like the Peltier original paper) cool metal piece to make the lower counteract appearance of noise.COD clears up and total phosphorus, and consistent temperature of reaction is used in clearing up of total nitrogen.To total phosphorus, total nitrogen clear up use less than reaction time of 30 minutes.
Teflon (PTEF) fender is arranged above the heat block; During each hole on the processing boards; This heat insulation cover plate 3 at first snugly fits on the heat block; Using the acute angle bore cutter then, is the mechanical guide reaming with the hole on the derby 4 (heat block), thereby accomplishes hole and the accurate contraposition in hole on the following derby on the Teflon plate.
The emphasis of the utility model just is: increased next-door neighbour's test tube, as the axial flow blower (fan) of cooling system.
The above; Be merely the utility model preferred embodiment; The ratio of the upper and lower gas channel of fan can be had and need be adjusted; So can not limit the scope that the utility model is implemented with this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (5)
1. small-sized machine of clearing up, it is characterized in that: it comprises casing, cooling system, heat insulating panel, derby, heating element, thermal insulation board; Frame and base before described casing comprises, preceding frame is arranged in the front portion of base, and the bottom, fan installation position on the preceding frame communicates with base intracavity; Described heating element is installed in the bottom of derby, and heating element is installed in base intracavity with derby, between heating element and base inner bottom surface, is provided with thermal insulation board, offers the counterbore that a plurality of confession test tubes insert at the derby end face; Described heat insulating panel covers the open end on chassis base top, on heat insulating panel, offers a plurality of through holes, and the counterbore on these a plurality of through holes and derby top is relative, so that test tube inserts and is nested with in the derby counterbore; Described cooling system is installed on the cooling system installation position of former frame, and the lower stream of airflow passage of cooling system communicates with base intracavity, and the upper air passage of cooling system is facing to being loaded on the test tube on the heat insulating panel.
2. the small-sized machine of clearing up according to claim 1 is characterized in that: described cooling system is an axial flow blower.
3. the small-sized machine of clearing up according to claim 1 is characterized in that: it also comprises control heat insulating panel and control circuit board; Described control circuit board is installed in the preceding frame of casing, and the control heat insulating panel covers on the former frame.
4. the small-sized machine of clearing up according to claim 1 is characterized in that: described heat insulating panel is the Teflon plate.
5. the small-sized machine of clearing up according to claim 1 is characterized in that: the described counterbore degree of depth is less than 1/3rd of the test tube degree of depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202781977U CN202204721U (en) | 2011-08-02 | 2011-08-02 | Small dispelling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202781977U CN202204721U (en) | 2011-08-02 | 2011-08-02 | Small dispelling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202204721U true CN202204721U (en) | 2012-04-25 |
Family
ID=45968839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202781977U Expired - Lifetime CN202204721U (en) | 2011-08-02 | 2011-08-02 | Small dispelling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202204721U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616384A (en) * | 2013-12-20 | 2014-03-05 | 北京金鹏环益科技有限公司 | Online multi-parameter water quality detector |
| CN105473994A (en) * | 2013-06-21 | 2016-04-06 | 7685297加拿大有限公司 | Systems and methods for preparing samples for chemical analysis using a cooled digestion zone |
| CN106769387A (en) * | 2016-12-21 | 2017-05-31 | 安徽省建筑工程质量监督检测站 | Pyrolysis analyzer air cooling equipment |
| CN106975527A (en) * | 2017-04-01 | 2017-07-25 | 北京赤帝鸿鹄科技有限责任公司 | Tilting counteracting tank is heated to reflux device |
| CN106979885A (en) * | 2017-04-01 | 2017-07-25 | 北京赤帝鸿鹄科技有限责任公司 | Instrument is cleared up in sealed condensation |
| CN110411818A (en) * | 2019-08-26 | 2019-11-05 | 兰州连华环保科技有限公司 | A kind of intelligent digestion, cooling integrated machine |
| CN111238914A (en) * | 2018-11-28 | 2020-06-05 | 中国石油天然气集团有限公司 | Solid sample digestion device and method |
-
2011
- 2011-08-02 CN CN2011202781977U patent/CN202204721U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105473994A (en) * | 2013-06-21 | 2016-04-06 | 7685297加拿大有限公司 | Systems and methods for preparing samples for chemical analysis using a cooled digestion zone |
| CN105473994B (en) * | 2013-06-21 | 2019-03-08 | 7685297加拿大有限公司 | System and method for using cooling resolution area to prepare chemical analysis sample |
| CN103616384A (en) * | 2013-12-20 | 2014-03-05 | 北京金鹏环益科技有限公司 | Online multi-parameter water quality detector |
| CN106769387A (en) * | 2016-12-21 | 2017-05-31 | 安徽省建筑工程质量监督检测站 | Pyrolysis analyzer air cooling equipment |
| CN106975527A (en) * | 2017-04-01 | 2017-07-25 | 北京赤帝鸿鹄科技有限责任公司 | Tilting counteracting tank is heated to reflux device |
| CN106979885A (en) * | 2017-04-01 | 2017-07-25 | 北京赤帝鸿鹄科技有限责任公司 | Instrument is cleared up in sealed condensation |
| CN106979885B (en) * | 2017-04-01 | 2024-03-22 | 北京赤帝鸿鹄科技有限责任公司 | Sealed condensation digestion instrument |
| CN111238914A (en) * | 2018-11-28 | 2020-06-05 | 中国石油天然气集团有限公司 | Solid sample digestion device and method |
| CN110411818A (en) * | 2019-08-26 | 2019-11-05 | 兰州连华环保科技有限公司 | A kind of intelligent digestion, cooling integrated machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |