CN2354132Y

CN2354132Y - Integrated optical colorimeter

Info

Publication number: CN2354132Y
Application number: CN 98250023
Authority: CN
Inventors: 康保华
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-11
Filing date: 1998-12-11
Publication date: 1999-12-15
Anticipated expiration: 2008-12-11

Abstract

The utility model relates to an integral optical colorimeter. The utility model is characterized in that a light source and a focusing lens are fixed in a left side hole of a metal casing, a photoelectric receiver is fixed in a right side hole of the metal casing, and the left and the right holes are positioned on the same axial line; a color comparing tank is fixed to the middle part of the metal casing, and the two side surfaces of the color comparing tank are vertical to the axis of the light source; a photocell is irradiated by a fixed wavelength, the photocell converts a light signal into an electric signal, the electric signal is input into a computer and the measurement of the concentration of a water sample is realized by calculation. The utility model has the advantages of simple structure, high measuring precision and long service life.

Description

Integrated optical comparator

The utility model relates to a kind of being applied in the environmental protection, to the optical devices that the contaminated degree of water body detects, and the integrated optical comparator of this optical devices.

In the existing environmental protection; the method of chemical oxygen demand (COD) is to adopt " water and tailing water analysis method " in the monitoring water body; there is following problem in " potassium dichromate method " stipulated in this method: reagent expense height; 3-4 consuming time hour; and produce defective such as secondary pollution, so can not satisfy heavy day by day monitoring.Also has a kind of photolometer, be by the semiconductor generator tube of one group of different wave length, wavelength selector, the wavelength selection system that constitutes, the monochromatic light generating means that replaces original incandescent light and optical filter to form, and between original conversion of signals amplifying circuit and signal processing circuit, an electronics robot scaling equipment of being made up of signal converting circuit and rate-aided signal sample circuit is installed again, is finished testing.This complex structure, the cost height, serviceable life is short, needs often to replace electronic component.

The purpose of this utility model is: provide a kind of and light signal is become electric signal be input in the computing machine, gone out a kind of integrated optical comparator of detected water sample concentration value by COMPUTER CALCULATION.

The purpose of this utility model also is: provide a kind of simple in structure, and integrated optical comparator with low cost, easy to detect.

The purpose of this utility model is achieved in that a kind of integrated optical comparator, comprise that mainly metal shell, light source, condenser lens, photelectric receiver, colorimetric pool constitute, it is characterized in that: above-mentioned light source, condenser lens are fixed in the left hole of metal shell, photelectric receiver is fixed in the right ports of metal shell, and left and right side opening is positioned on the same axis; Colorimetric pool then is fixed on the middle part of metal shell, its two sides and light source axis normal, and by photelectric receiver fixed wave length is radiated on the photoelectric cell, make photoelectric cell that light signal is become electric signal and be input in the computing machine, realize mensuration to water sample concentration.

The utlity model has following advantage:

1, light signal being become electric signal is input in the computing machine, by the liquid in the colorimetric pool with the concentration difference, incident light is produced different absorptions, calculate the detected water sample concentration value according to Beer law again, more go a step further than old-fashioned method, and improved work efficiency, improved degree of accuracy and the level measured.

2, all optical device is fixed in the metal shell, and is not fragile, long service life.

3, simple in structure, easy to operate, only need can be measured the pollution level of liquid in 10 minutes.

The utility model further specifies by the following drawings and embodiment:

Fig. 1 is stereoscopic figure of the present utility model.

Fig. 2 is the longitudinal cross-section cut-open view among Fig. 1.

Referring to Fig. 1-2, a kind of integrated optical comparator mainly comprises metal shell 6, and light source 1, condenser lens 2, photelectric receiver 4, colorimetric pool 3 constitute, and wherein metal shell 6 is a rectangular case, and its left hole is a shoulder hole 61,62; Right ports is another shoulder hole 63,64, and this hole 61,62,63,64 is positioned on the same axis, the centre of metal shell 6 be provided with one can ccontaining colorimetric pool 3 cavity 65, colorimetric pool 3 is fixed and can not changes when operation for glass sintering forms.

Above-mentioned light source 1, condenser lens 2 are fixed in the left hole 61 of metal shell 6, and light source 1 is positioned at the left end in hole 61, and condenser lens 2 is positioned at the right-hand member with hole 61; Photelectric receiver 4 is fixed in the right ports 64 of metal shell 6,3 middle parts that are fixed on metal shell 6 of colorimetric pool, its two sides 33,34 and light source axis normal.

Above-mentioned photelectric receiver 4 is made up of narrow-band interference sheet 41 with fixed wave length and photoelectric cell 42, narrow-band interference sheet 41 places in the hole 64, its plane and light source axis normal, photoelectric cell 42 is positioned at the rear of narrow-band interference sheet 41 in same hole 64, and it is stand-by to draw the electric wire 5 that is just having, paying the utmost point outside metal shell 6.

Above-mentioned colorimetric pool 3 is " ten " font, its two sides 33,34 and light source axis normal, and the above and below is the import and export end 31,32 of liquid, and stretches through in the upper and lower hole 66,67 of metal shell 6 and fix.

During assembling, above-mentioned light source 1, condenser lens 2, photelectric receiver 4, colorimetric pool 3 are all placed in the metal shell 6, and lie in a horizontal plane in another metal shell 7 that is complementary with it and fix.The and arranged on left and right sides face 72,73 of metal shell 7 is an openend, and positive forward, central part is provided with the sliding door 71 that can open, if change colorimetric pool 3, then can open sliding door 71 and change.

During detection, liquid flows to, flows out (or reversed flow) by outlet 32 through import 31, opens light source 1, the full spectrum of wavelengths that light source 1 produces, line focus lens 2, behind light focusing, be radiated on the fluid to be measured in the colorimetric pool 3, again through narrow-band interference sheet 41, be radiated on the photoelectric cell 42,42 on photoelectric cell becomes electric signal with light signal, and electric signal is input to (not shown) in the computing machine after reaching electric voltage/frequency converter by the electric wire on it 5; Because the liquid in the colorimetric pool 3, with the concentration difference incident light has been produced different absorptions, incoming frequency is changed, computing machine is according to Beer law and frequency values then, can calculate the concentration value of detected water sample, so the data that record are accurate, operate very simply, reliable, can be widely used in the work in the laboratory.

Claims

1, a kind of integrated optical comparator, comprise that mainly metal shell, light source, condenser lens, photelectric receiver, colorimetric pool constitute, it is characterized in that: above-mentioned light source, condenser lens is fixed in the left hole of metal shell, photelectric receiver is fixed in the right ports of metal shell, and left and right side opening is positioned on the same axis; Colorimetric pool then is fixed on the middle part of metal shell, its two sides and light source axis normal.

2, integrated optical comparator according to claim 1, it is characterized in that: above-mentioned photelectric receiver is made up of narrow-band interference sheet and photoelectric cell with fixed wave length, the narrow-band interference sheet places in the right ports, its plane and light source axis normal, photoelectric cell is positioned at the rear of narrow-band interference sheet in same hole, and draws the electric wire that is just having, paying the utmost point outside metal shell.

3, integrated optical comparator according to claim 1, it is characterized in that: above-mentioned colorimetric pool is " ten " font, its two sides and light source axis normal, above and below are the import and export end of liquid, and stretch through in the upper and lower hole of metal shell and fix.

4, integrated optical comparator according to claim 1, it is characterized in that: above-mentioned light source, condenser lens, photelectric receiver, colorimetric pool all place in the metal shell, and lie in a horizontal plane in another metal shell of being complementary with it and fix.