CN1254839A - Tester for latex concentration of caoutchouc tree - Google Patents
Tester for latex concentration of caoutchouc tree Download PDFInfo
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- CN1254839A CN1254839A CN 98122907 CN98122907A CN1254839A CN 1254839 A CN1254839 A CN 1254839A CN 98122907 CN98122907 CN 98122907 CN 98122907 A CN98122907 A CN 98122907A CN 1254839 A CN1254839 A CN 1254839A
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- latex
- concentration
- tree
- caoutchouc
- latex concentration
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Abstract
A latex concentration tester for caoutchouc tree is based on the principle that when different kinds of latex with same weight but different concentrations are heated, their temp raising speeds are differnt. The quantitative latex is put in test cup fixed in electric heater. The heater is turned on while a temp measuring probe is inserted in the test cup. Said probe can control electronic counter to count in a certain temp range. The latex concentration can be known from the reading of electronic counter. Its advantages are high speed and accuracy, simple operation, low cost and no pollution.
Description
The invention belongs to the tropical agriculture technical field.
Retrieve in May, 1998 patent specification CD before, the technology of no this respect.Consult publication " rubber collected translation ", " world's tropical agriculture information ", " the tropical crops research " of the publication of Chinese Academy of Tropical Agricultural Sciences and Tropical Agricultural University Of South China and to nearest first phase, find that the latex concentration that detects rubber tree so far adopts three kinds of methods: weight method, photometer method and microwave method from opening number.
Weight method is the compressing tablet-immersion-oven dry-weigh again of latex being weighed-solidify, and then according to formula: dried glue weight/latex is heavy by * 100%, obtains latex concentration.This method precision height, but length consuming time, whole process was lasted more than 2 hours, can not satisfy the requirement of thinking to know immediately latex concentration in the production.
The photometer method be with quantitative latex after dilution repeatedly, with photometric determination its transmittance,, find the concentration of tested latex according to the relation curve of transmittance and latex concentration.This method can draw testing result in 10 minutes, but because latex through repeatedly dilution, causes accidental error big; The factor that influences rare latex transmittance in addition is many-sided, and therefore the precision as a result that detects is low, time error is arranged greater than 10% (result with weight method is a benchmark); And operate loaded down with trivial details.This method seldom adopts in rubber production and scientific research.
Microwave method is that the container that will quantitative latex be housed places between microwave generator and the microwave receiver, and the moisture in the latex can absorb microwave, just can know the water cut of latex according to the absorbed amount of microwave, thereby draws the concentration of latex.This method specific luminosity meter method is easy and accurate, but apparatus expensive, every equipment does not wait for 3000 yuan.And the maintenance of equipment difficulty, maintenance cost is big.The microwave leakage of equipment can endanger health of operators.Because therefore the various shortcoming of microwave method does not possess promotional value, only uses in fraction rubber producing region at present.
The latex concentration that detects rubber tree has crucial meaning to rubber production and scientific research, and all there is unsurmountable shortcoming in present various detection methods, can not satisfy the requirement of rubber production and scientific research.
The objective of the invention is: quick, accurate, easy, cheap and contamination-freely detect the latex concentration of rubber tree, fully satisfy the requirement of rubber production and scientific research.
During the present invention's latex that concentration is different according to heating weight is identical, the speed difference that the latex temperature raises can detect latex concentration thus.Its mechanism is that what to absorb heat in the latex is water, and during the latex of the heating identical water cut difference of weight (being the concentration difference), the water cut height then heats up slowly, and water cut is hanged down then quick heating.Be similar to and boil two pots of meals that weight is identical: 4 jin of rice+6 jin water of A pot, 6 jin of rice+4 jin water of B pot, then the B pot is than the first boiling of A pot.
As shown in drawings, the present invention is made of stabilized voltage supply W, electric heater R, detection cup B, the high precision measuring temperature probe T and the electronic counter J that are fixed among the R.
When detecting latex concentration, accurately measure a small amount of latex in detecting cup B, start electric heater R, and insert temperature probe T simultaneously, T control electronic counter J is in the certain temperature range inside counting, by the reading of J latex concentration as can be known.Average error is less than 0.5%.
The present invention and weight method relatively have following advantage: detect fast, survey a sample and only need 2 minutes, be equivalent to 1/60 of weight method; Need not add medicine when the present invention detects and solidify sample, not need compressing tablet, immersion and dry by the fire in, simple procedure, expense is few, and after weight method must add medicine sample is solidified, compressing tablet, immersion and oven dry, formality is loaded down with trivial details, and expense is big.
Specific luminosity meter method testing result precision height of the present invention, easy and simple to handle.The former average error＜0.5%, the latter 〉=10%, the former directly puts into sample just and can detect, and the latter could detect after sample repeatedly must being diluted.
The present invention is cheaper than microwave method equipment price, and is simple in structure, easy to maintenance.850 yuan of the former every equipment prices, 3000 yuan of every equipment of the latter.The former operating personnel can keep in repair, and spare and accessory parts are inexpensive, and maintenance cost is few, and the latter must the professional could keep in repair, spare and accessory parts valency height, and maintenance cost is many.
In sum, the present invention can detect the latex concentration of rubber tree fast, accurately, easily, and equipment price is cheap, and the expense of use is few, does not endanger operating personnel's health.The present invention has overcome the defective of prior art fully, can satisfy the requirement of rubber production and scientific research, has tangible novelty, creativeness and practicality.
The applicant thinks that realization best way of the present invention is: after the patent approval that model machine is on probation on a rubber farm, further improve according to trial state, and carry out product then and identify, promote the use of in the rubber producing region.
Claims (2)
- Technical characterictic of the present invention is: during identical and the latex of panama rubber tree that concentration is different of heating weight, the speed difference that the latex temperature raises detects the concentration of latex in view of the above.1, all by the heating latex of panama rubber tree, a blanking method that draws latex concentration with the speed of measuring the rising of latex temperature belongs to the scope of the invention.
- 2, all by the heating latex of panama rubber tree, a blanking method that draws latex concentration with the temperature conductivity of measuring latex belongs to the scope of the invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98122907 CN1254839A (en) | 1998-11-21 | 1998-11-21 | Tester for latex concentration of caoutchouc tree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98122907 CN1254839A (en) | 1998-11-21 | 1998-11-21 | Tester for latex concentration of caoutchouc tree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1254839A true CN1254839A (en) | 2000-05-31 |
Family
ID=5227951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98122907 Pending CN1254839A (en) | 1998-11-21 | 1998-11-21 | Tester for latex concentration of caoutchouc tree |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1254839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890099A (en) * | 2012-06-18 | 2013-01-23 | 中国海洋大学 | Method and device for measuring components of mixture |
-
1998
- 1998-11-21 CN CN 98122907 patent/CN1254839A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890099A (en) * | 2012-06-18 | 2013-01-23 | 中国海洋大学 | Method and device for measuring components of mixture |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |