CN2062843U

CN2062843U - Sensor of flow-down type turbidity tester

Info

Publication number: CN2062843U
Application number: CN 90207002
Authority: CN
Inventors: 朱生明; 朱生德
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-03-01
Filing date: 1990-03-01
Publication date: 1990-09-26

Abstract

The utility model relates to a sensor of the turbidity tester which is used for measuring a liquid turbidity, composed of a casing and a test groove in the casing. A lateral face of the test groove is provided with a glass window with the structure of a double-layer glass, an infrared source is arranged on the outside of the glass window, an infrared light receiver is arranged on another lateral face outside of the glass window which forms 90 DEG with the lateral face of the test groove, and the turbidity is tested by the scattering theory of particles in the liquid stream using light. The inlet of the water stream is at the upper part and the outlet is at the lower part, which forms the structure of a flow-down type. The utility model overcomes the problems that the original incandescence light source is aged and the test groove is easy to accumulate dirt, etc. The utility model has the advantages of high precision, easy cleaning and stable measurement performance and is suitable for testing the turbidity of various water qualities.

Description

Sensor of flow-down type turbidity tester

The utility model relates to and a kind ofly is used to measure liquid turbidity, especially for the sensor of the turbidimetry of measuring the tap water turbidity.

The turbidimetric analysis turbidimetry of water quality was to adopt to be interrupted sampling and measuring in the past, often was not easy to monitoring water quality.Now adopt the continous way turbidimetry, can measure the turbidity of flowing water continuously, be convenient to monitor water quality.Existing continous way turbidimetry generally partly is made up of measuring instrument, froth breaker, sensor and rhone etc. four.Sensor is to adopt light to scattering principle particles contained in the flowing water, measures the signal of its scattered light intensity, flows to measuring instrument.The light source that existing sensors adopted is an incandescent lamp, exists light source ages problem and colourity to influence problem, influences the stability and the serviceable life of test performance; Its current are from bottom to top, and the easy contamination dirt of sensor inwall influences measuring accuracy, not easy cleaning; The glass window of its printing opacity is the single-glass structure, and cold snap can make glass surface haze and influence measuring accuracy.

The purpose of this utility model is to provide the continous way liquid turbidity analyzer that a kind of measurement performance is stable, measuring accuracy is high.

For achieving the above object, the utility model adopts following technical solution: this sensor pack contains a housing that import and export are arranged and one and is placed in the test trough that import and export are arranged in the housing, there is the glass window of a printing opacity side of test trough, light source of the outer arrangement of this glass window, becoming with light source on another test trough side of 90 ° also has a glass window, and this glass window is outer settles a scattered light receiver.Be characterized in that light source is the infrared light power valve, the scattered light receiver is the infrared light receiver.Owing to adopted infrared light supply, light source is comparatively stable, has overcome the problem of aging that incandescent light source occurred, thereby makes the measurement performance of sensor stable, the precision height.

For stability and the precision that guarantees this sensor measurement better, near light source, settle an infrared temperature compensator receiver, the signal that this receiver measures also flows to measuring instrument, to eliminate the light-source temperature variable effect.

In this sensor, the pipe adapter of housing upper end is the import of liquid stream, and the pipe adapter of housing lower end is the outlet of liquid stream; The last aperture of test trough is the import of liquid stream, and the following aperture of test trough is the outlet of liquid stream.Constitute the streaming sensor that falls like this, its inwall is difficult for the deposition dirt, and then measurement performance is stable, the precision height, and be easy to clean.

The glass window of this sensor is the glass that a printing opacity respectively is installed inside and outside the dividing plate that window arranged, and forms double-layer glass structure, prevents that cold snap from causing that glass surface hazes and influences measuring accuracy.

The utility model compared with prior art, has following conspicuous advantage: owing to overcome the light source ages problem and colourity influences problem, reduce the contamination dirt and eliminate glass window and haze,, and be easy to clean so measurement performance is stable, precision is high, the life-span is long.It both can be used for being interrupted sampling and measuring, also can be used for serial sampling and measured, and the discharge of sampling is also less.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the front elevation of the structural representation of an embodiment of the utility model.

Fig. 2 is the side view of sensor shown in Figure 1.

Fig. 3 is the cut-open view at A-A place among Fig. 1.

Label among the figure is represented: (1)-pipe adapter, (2)-aperture, (3)-and housing, (4)-panel, (5)-scattered light receiver, (7)-test trough, (8)-and the aperture, (9)-pipe adapter, (10), (11)-glass window, (12)-and terminal block, (13)-infrared temperature compensator receiver.

A most preferred embodiment of the present utility model is: referring to Fig. 1, Fig. 2 and Fig. 3, this sensor comprises a rectangular cylindrical housing (3) of vertically installing, and housing (3) internal fixation the test trough (7) of a rectangular cylindricality.The pipe adapter (1) of a water inlet is being fixed in the upper end of housing (3), and the pipe adapter (9) of a water outlet is being fixed in the lower end.The test trough upper end has water inlet (2) to connect admitting pipe joint (1), and the lower end has water outlet (8) to connect the lower inner cavity of housing (3) and passes to its titting water outlet, constitutes the streaming structure that falls.The material of the panel (4) of housing (3) is an organic glass, then can be used for observing housing (3) hypomere inner chamber streamflow regime.The right flank of test trough (7) has the glass mouth (10) of a printing opacity, facing to a light source of fixed in position (6) on housing (3) inwall of glass window (10), this light source adopts commercially available PH303 infrared transmitting tube for adopting infrarede emitting diode as light-emitting component.The glass window (11) that a printing opacity is also arranged in the front of test trough (7), facing to a scattered light receiver of fixed in position (5) on housing (3) inwall of glass window (11), its scattered light receiver is the infrared light receiver., adopt commercially available PH302 infrared receiving tube.Near light source (6), settle an infrared temperature compensator receiver (13) abreast with scattered light receiver (5), also adopt the PH302 infrared receiving tube.The lead of two receivers (5), (13) leads to measuring instrument by terminal block (12).Two glass windows (10), (11) all are the glass that a printing opacity respectively is installed inside and outside the dividing plate that window arranged, and form the glass window structure of two glassy layers.The turbidimetry that adopts this sensor to form, through the experiment test result, the repeatable accuracy of test≤± 1%.

The utility model is applicable to the turbidimetric analysis turbidimetry of various water quality, turbidimetric analysis turbidimetry in the industry wastewater treatment process such as also be applicable to medicine, chemical industry, bleaching and dyeing, and can to the turbidimetric analysis turbidimetry of rivers and lakes water quality, be particularly suitable for the mensuration of each the operation water quality in the water supply purification process.

Claims

1, a kind ofly be used to measure liquid turbidity, sensor especially for the turbidimetry of measuring the tap water turbidity, comprise that a housing (3) that import and export are arranged and one are placed in the test trough of import and export (7) is arranged in the housing (4), there is the glass window (10) of a printing opacity side of test trough (7), the outer light source (6) of settling of glass window (10), become with light source (6) on another test trough side of 90 ° a glass window (11) is also arranged, the outer scattered light receiver (5) of settling of glass window (11), it is characterized in that light source (6) is the infrared light power valve, scattered light receiver (5) is the infrared light receiver.

2, sensor according to claim 1 is characterized in that settling an infrared temperature compensator receiver (13) near the light source (6).

3, sensor according to claim 1 is characterized in that the import of housing (3) upper pipes joint (1) for liquid stream, and housing (3) lower end pipe adapter (9) is the outlet of liquid stream; The last aperture (2) of test trough (7) is the import of liquid stream, and the following aperture (8) of test trough (7) is the outlet of liquid stream.

4, sensor according to claim 1 and 2 is characterized in that two glass windows (10), (11) all are the glass that a printing opacity respectively is installed inside and outside the dividing plate that window arranged.

5, sensor according to claim 1 is characterized in that the material of the panel (4) of housing (3) is an organic glass.