JPS5858442A - Organic contamination turbidimeter - Google Patents

Abstract

PURPOSE:To improve a washing effect and to make a quick and highly effective measurement of organic contamination turbidity possible, by carrying out automatic washing and manual washing by jetting air in a passing hole of a liquid to be inspected or inserting a freely detachable manual brush. CONSTITUTION:When an air pump 24 is started, air bubbles are jetted from an opening 27 of the lower part of a measurement cell 5 and a compensation cell 6 of a detection part for measurement 4 and contaminants stuck to the cells 5, 6 are washed automatically. Next, when the pump 4 is stopped and an air pump 25 is started, the bubbles are jetted from an opening 29 of the upper part of the cell 5, 6 and pressure difference is brought out between the upper and lower sides of the cells 5, 6. Then, circulation of a liquid to be inspected is accelerated and the degree of contamination turbidity of the liquid to be inspected is measured in accordance with the absorption rate of ultrviolet rays etc. On one hand, when manually operating brushes 31, 30 are inserted into each cell 5, 6 through a movable pipe, the cells 5, 6 are washed manually. The degree of organic contamination turbidity is measured quickly and highly effectively by impreving the washing effect by using jointly the automatic washing and manual washing.

Description

Detailed Description of the Invention The Honya Wj4 is an organic pollution needle that can continuously measure organic pollution, which is a major cause of river water pollution, etc., especially an organic pollution needle that has two cleaning functions: automatic cleaning and manual cleaning. Concerning dirty needles.

In general, a one-party automatic water quality meter basically consists of a light source L1 cell S and a detector as shown in Figure 1.

The absorption of the light rays absorbed in the cell S [E is basically 27 belts,
According to Beer's #& law, it is expressed by the following equation (1).

E-1o g 11 / I 01 cho nawamo l0=11
-10-"...(1) Here, 11 is the intensity of the incident light at ytS+, I (l is the intensity of the transmitted light, and j is the cell 80 path length.

Note that the element fE is proportional to the optical path length I, and the following equation (2) holds true.

g=＠J ・7−<2)
Here, K is a constant depending on the molecular extinction coefficient t, substance 01111 members, wavelength, etc. contained in the test liquid.

Similar to how a turbidity meter makes use of the properties of inorganic substances to reflect, scatter, and shape the visible light layer, organic pollution needles make use of the properties of organic substances to absorb ultraviolet rays, and detect the degree of attenuation of one amount of ultraviolet light. This is a meter that detects the degree of organic pollution. Therefore, in such a needle finer device, it is important that countermeasures against contamination of the cell S through which the test liquid passes can be easily and reliably implemented! It was a question. Figure 2 shows the operation theory of the conventional automatic cleaning mechanism #4-
In the diagram 0 showing the eccentric cell l, the position LO of the original ML is
As the rotation center of this eccentric cell 1, the eccentric cell 20 is detected ti
The position tDo of D is set as the center of rotation of this eccentric cell 20.

Let Or and Ox be the respective circular centers of the eccentric cells 1.2. In this case, * is the eccentricity of the light source position (rotation center) Lo with respect to the sun center Us, and the eccentricity of the detector position (rotation center) Do with respect to the circle center 0.

A cleaning device (wiper) 3 is in constant contact with the outer circumference of the eccentric cell 1.2, and follows the rotation of the eccentric cell 1.2 in the direction of the arrow to remove dirt from the outer circumferential surface of the eccentric cell 1.2. Wash. ,
Figure 3 shows the mMIm diagram of organic contamination It when another conventional automatic cleaning mechanism is implemented. In the figure, the light source is a low-pressure mercury lamp, and the light is applied by the power source ES.Measurement The cell 8 is of a flow type, and the test liquid flows in the direction of the arrow P and flows out in the direction of the arrow Q.

The measurement light transmitted through the constant cell S passes through the condensing lens L1 and the calibration filter Fl, and is separated into spectra by the half i-ra Ml.

A part of this measurement light is transmitted to the ultraviolet light filter F2, the detector D1,
It is input to the differential amplifier 3 via the amplifier jaA1.

The remaining part passes through the visible light filter F3, the detector D2, and the amplifier M2, and is input to the differential amplifier M3. Differential increase @ device 3
The output of is sent as an output signal of this pollution needle via a voltage-to-voltage converter vO. By the way, the automatic cleaning mechanism consists of a programmer PR, a cleaner drive motor MO, and a rotary cleaner CL, and the output of the differential amplifier 3 operates the drive motor MO via the programmer PR. With this motor MO, the rotation cleaner CL is 1g1
ii, and the measurement cell of 80 liao was cleaned by motion. Nagi is an indicator needle built into this pollution needle. Next, FIG. 1IL4 shows a schematic configuration diagram of an organically contaminated needle implementing still another conventional automatic cleaning mechanism. In the figure, light 111L is applied by power source E8 and transmitted to measurement cell 8. The measurement light transmitted through the measurement cell S is separated into spectra by the bar 7 Mitsu M1,
Part of it is ultraviolet light filter F2, detector (photocell) D
1 is input to the arithmetic circuit ee. The remainder passes through a visible light filter F3 and a detector (photocell) D2, and is input to the arithmetic circuit CC. In addition, without going through the measurement cell S, the light is input from the light source to the arithmetic circuit cc via the ultraviolet light filter F4, photocell D3 and visible light [filter F5, detector (photocell) D4t', and compensates for the movement of the light source L+2]. However, the automatic cleaning mechanism is sponge ball 8B1
It is composed of a solenoid valve 8vl of the test liquid population SI@, a solenoid valve SV2 on the test liquid outlet side, a cleaning switching IEiB valve 8Vs, 8η, and a cleaning control circuit CCC. When measuring,
The solenoid valve JiiV is activated by the control signal of the cleaning control circuit ccc.
x to 8V4 is controlled, and the test liquid can flow from the bottom to the top in the measurement cell s. The sponge ball 8B is pushed up and held above the measurement cell 8 by the flow direction of the test liquid, and there is no problem in measurement. During cleaning, the solenoid valves SV1 to 5V42 are switched in the opposite direction to the case where X6W is satisfied by the control signal of the cleaning control circuit CCC. By this switching, a part of the test liquid flows from the top of the cell 8 to the bottom, and the sponge ball S
B can be pushed down to a position below the measuring cell S. This pressing down cleans the measurement cell 80 window of dirt.

Normally, for this cleaning, the solenoid valves 8Vl to sv4 are switched from the bottom to the top of the measurement cell 8, which is the flow direction of the IIO to be tested, to push up the sponge ball SB, as in the case of the adhesion measurement.

By this pushing up, dirt on the window of the measurement cell S is cleaned. In this way, by alternating the flow direction of the test liquid,
Since the sponge ball 8B moves up and down, the measurement cell 8 is cleaned S times.

The above-mentioned 18 m automatic cleaning mechanism must be able to perform a satisfactory cleaning function for any type of dirt on the casing to be inspected. However, in general, if the water quality is particularly poor, there is a risk that it may not be able to perform its function. That is, for the wiper 3 shown in FIG. 1, the cleaner CL shown in FIG. 2, and the sponge ball a1m shown in FIG. Met. Furthermore, in order to achieve a sufficient cleaning effect for any water quality, it is considered to use a manual cleaning mechanism, that is, a manual brush, but with a dirty needle equipped with such an automatic cleaning mechanism, In view of the above-mentioned points, the present invention eliminates the drawbacks of the conventional technology and improves the cleaning effect by providing a manual cleaning mechanism together with an automatic cleaning mechanism. , that JI! The purpose is to provide an organic pollution needle that is easy to handle and maintain.

According to the present invention, such a purpose is achieved by having a test liquid passage hole provided vertically in the vertical direction and a detector provided in the test liquid passage hole, and detecting the degree of contamination of the test sample 'ftL. A measuring detecting section to detect the measuring detecting section, a pipe supporting the measuring detecting section, and air blowing out into the test liquid passage hole through a conduit provided in the support pipe to discharge the test liquid. an air source that promotes cleaning of the passage hole and circulation of the test case in the test liquid passage hole; and an air source that is arranged parallel to the support pipe and movable in the vertical direction, and whose lower end is the upper end of the test liquid passage hole. 1iKI! 2. By providing a movable pipe that can be attached to the sample, and a manual brush that is retractably provided at the lower end of the movable pipe and can be freely inserted into the test liquid passage hole, 2! will be accomplished.

Next, one embodiment of the present invention will be described in detail based on one direction.

#IsCause shows a schematic configuration diagram of an organic pollution needle in which the present invention is implemented, (A is a front sectional view of its detection part, (Yen is its plane 1IFF-view, (Q is its conversion part. In FIG. 2, the gs diagram, and the part having the same function as in FIG. 4 are given the same reference numerals.

The measurement detection unit 4 accommodates a test liquid passage hole, in this embodiment a measurement cell 5 and a compensation cell 6, and a detector, in this embodiment a detection mechanism 7 for optical analysis. Measuring cell S and compensation cell 6
C) @Put the foot detection part 4 directly through the Ell in the vertical direction,
It is formed so that the test liquid can pass through it. The detection mechanism 7 is
An ultraviolet light filter F2, ? 4. By installing the visible light filters F3 and F5, the maximum amount of ultraviolet light and visible light OXX can be obtained from a single light source. The yt path length of the sliding cell 5 is larger than the optical path length of the compensation cell 60, and the test liquid flows through the measurement cell 5 and the compensation cell 6 at the same time. At this time, the ultraviolet light and the visible light alternately pass through the measurement cell 5 and the compensation cell 6,
Detector (photocell) installed at the end of each optical path
10.11, two wavelengths with different attenuation amounts due to the difference in optical path length are obtained. In addition, 12 and 13 are mirrors, 14 and 15 are amplifiers, 14A and 15 are slits, and 1
Reference numeral 6 denotes a synchronous detector "t-al". A converter 17 is attached to the measurement detecting section 4. This converter 17 calculates the two wavelength signals detected by the detection mechanism 7. It is composed of a signal processing circuit 1B, a logarithm calculation circuit 19, and an amplifier 20, and further accommodates a cleaning control circuit 21, a signal output section 22#, a light source ll1c source 23, and the like.

Next, the cleaning mechanism is operated by an air source, that is, an air pump 24 .
25 and an opening 27 connected to the air discharge side of the air pump 24 and located at the lower part of the measuring cell 5 and the compensation cell 6, respectively.
, 27 with two cell cleaning air conduits 26 , 26
and the measurement cell 5 connected to the air discharge side of the air bong 125.
and an automatic cleaning mechanism consisting of two test liquid circulation air conduits 28 and 28 having openings 29 and 29 at the upper position of the compensation cell 6, and a manual cleaning fIA supplementary having a manual brush 30 and 31. Ru.

Next, Figure 6 is a schematic diagram of the cleaning mechanism, and Figure 7 is the 6I
@10 Shows a partial configuration diagram. In FIGS. 6 and 7, the cleaning mechanism includes a support pipe 32 that supports the measurement detection s4, a guide pipe 34 held by a bonding metal holder 33 attached to the support pipe 32, and a JII alloy 33. The movable by-piece 136-7 and the IJ movable by-piece 36 are vertically supported by passing through the respective holes provided in the movable metal A3&.
, 37. The upper end of the support pipe 320 is equipped with an air source, an air pump 24.2M-fi, support z: 4;
32, an air conduit 26 for cell cleaning and an air conduit 2s for circulating the test chamber are accommodated. A support fitting 38 is provided on the upper part of this support pie 112, and is held and fixed at the position to be measured. Guide11
A reference numeral 39 guides the output signal of the observation detection section 40 to the converter 17 via the support pipe 32, and a control signal for the air ponders 24 and 25 from the converter 17 is introduced. Further, a large diameter portion 40 capable of housing the manual brush 30 is formed at the lower end of the movable pipe 36, and a bushing 41 made of rubber or non-stick is attached to the lower portion of the large diameter portion 40. This bushing 41 allows the movable pipe 36 to come into close contact with the upper end sk of the measuring cell 5. In addition, this manual brush 3
A brush operating rod 42 is connected to the movable pipe 36, and the other end of the operating rod 42 is formed into a hook shape.
It is latched to a brush latching fitting 43 attached to the guide pipe 34. Similar to the movable pipe 36, a manual brush 31 is housed in the lower end of the movable pipe 37, and an e-push 44 is attached to the end of the lower end. Due to this Bush 44, 7XJ movement Eve 37 is compensation cell 6
can be tightly attached to the upper end of the Further, a brush operating rod 45 is coupled to the manual brush 31 and housed within the movable pipe 37. A hook-shaped portion at the other end of the operating rod 45 is hooked to a brush hook 43 . Furthermore, the movable pipe 36
, 37 are provided with a funnel 46 for injecting a cleaning solution or a standard calibration solution.

Next, the handling operations of the above-mentioned moving cleaning mechanism and manual cleaning mechanism O will be explained. The fixing horizontal outlet 4 constructed as shown in FIG. 6 is installed in the test liquid tank case or at a location where it should be measured, and is immersed in the test liquid.

The automatic cleaning mechanism stops the air bonder 25 according to the control signal of the cleaning control circuit 21 of the converter 57, and starts the air bonder 24.
Activate. The air supplied by the air bong 24 passes through the cell cleaning air conduit 26, and then through the opening g27 opened at the lower position of the measurement cell 5 and the compensation cell 6.
Air bubbles are ejected into the side leg cells 5j6 and the compensation cells 6. These air bubbles cause dirt adhering to the inside of the measurement cell 5 and the compensation cell 6 to be blown away. When this fk and cleaning is completed and measurement is started, control No. 16 of the cleaning control cycle kl 21 stops the air bonder 24 and activates the air bonder "25."

The air supplied by the air bonder 25 passes through the test liquid circulation air conduit 28 and enters the measurement cell 5 and the compensation cell 6 through the opening 8129 opened at the upper position of the measurement cell Si6 and the compensation cell 6. A: It becomes bubbles and gushes out. The air that is blown into the upper part of the measurement cell 5 and the compensation cell 6 in the form of bubbles creates a pressure difference between the upper and lower sides of the measurement cell 5 and the compensation cell 6, which promotes the circulation of the sample liquid. As a result, it is important to quickly detect the degree of contamination of the test liquid.

In addition, if the water quality is polluted, dirt that cannot be sufficiently treated by the rotating cleaning mechanism may be removed from the measurement cell 5J6 and the compensation cell 6.
When layering the inside, a sufficient cleaning effect can be exerted due to the manual cleaning mechanism being used. That is, the movable pipes 36 and 37 are moved downward, and the bushes 41 and 44 are brought into close contact with the upper ends of the measurement cell 5 and the compensation cell 6 of the measurement detection section 4. Next, operate the brush operating rods 42, 4s from above to operate the manual brushes 30, 31.
The movable pipes 36, 3 descend into the scooping cell 5 and the compensation cell 6 to clean and remove dirt adhering to the inner walls.
The cleaning liquid can be injected through the inside of the movable pipes 36, 37 using the funnel 46 of No. 7 to perform thorough cleaning.

In addition, when calibrating the detection section 40, the standard solution for calibration is injected through the funnel 46 in the same way, filling the measuring cell s$f and the compensation cell 6, and calibrating the detection section 40. can. In addition, at this time, use a manual brush CI0.31.
are housed in the movable pipes 36, 37, and the bushings 41.
44 shall be placed in close contact with the measurement cell 5 and the compensation layer. The sec for performing the 111 constant is the movable pipe 36.
37 upwards and its lower end is pulled away from the measurement cell S and the compensation cell, the test liquid will be ejected from the opening 29.2fa in the #IIJ foot 7 and the compensation cell 6. This revolutionizes Il concentration and enables rapid and highly accurate measurements.

As described above, according to the present invention, air is blown into the test liquid passage hole to remove the test liquid 011 in the test liquid passage hole.
By providing an air source that promotes the accumulation of liquid and a manual brush that can be freely inserted into the test liquid passage hole, a manual cleaning means can be easily installed together with an automatic cleaning means, and this automatic and manual cleaning means can be easily installed. By using in combination, any dirt inside the test liquid passage hole is sufficiently cleaned, the cleaning effect is improved, and handling and maintenance are easy.

Although the embodiments of the present invention will be described with reference to a dipping type organic contamination needle, the present invention is not limited thereto, and it goes without saying that the present invention can also be applied to a flow type organic contamination needle.

[Brief explanation of the drawing]

Figure 1 shows the principle of an automatic water quality measuring device that uses light! I! Fig. 2 is an explanatory diagram of the operation of a conventional automatic cleaning mechanism, and Fig. 3 is an explanation of the operation of a conventional automatic cleaning mechanism. A schematic configuration diagram of a +1!7fR meter, FIG. 4 is a schematic configuration diagram of an organic pollution needle implementing another conventional automatic cleaning mechanism, and FIG. 5 is a schematic configuration diagram of an immersion type organic pollution needle in which the present invention is implemented. (4)
(8) is the front cross-section W of the detection part.
Figure J, (Q is the conversion unit, Figure 6 is a schematic configuration diagram of the cleaning mechanism, and Figure wJ7 is a partial configuration diagram of Figure 1S6. 4: Measurement detection unit, 5: Measurement cell, 6: Compensation cell, 17
: converter, 21: cleaning control circuit, 24゜25=air bonnet, 26: air conduit for cell cleaning, 2II: air conduit for microvolume liquid circulation, 30, 31: manual brush, 32: support pipe, 34: guide Pipes, 36, 37: Movable pipes. H value Figure 1 Figure 2 Figure 3? Figure 4

Claims (1)

[Claims] (i) A measuring detection section for detecting the degree of contamination of the test liquid, which has a test liquid passage hole provided vertically in the vertical direction and a detector installed in the test liquid passage hole 11; Air is blown into the test liquid passage hole through a support pipe that supports the detection section and a conduit provided on the support pipe to clean the test liquid passage hole and to conduct the test inside the test liquid passage hole. liquid o
*'ip; an air source that promotes ip; a movable vibrator that is disposed parallel to the support vibrator and is movable vertically and whose lower end is in close contact with the upper end of the test liquid passage hole; and a lower end of the movable pipe. An organic contamination needle characterized in that it is provided with a manual brush that can be stored in the sample liquid passage hole and can be freely inserted into the sample liquid passage hole.