JPH06160377A - Method and apparatus for analyzing water quality - Google Patents

Abstract

PURPOSE:To eliminate an artificial miss and to remarkably improve an operating efficiency by using a pallet having a memory and the automated steps of pipetting, diluting, measuring, calculating, etc. CONSTITUTION:An operator is not necessary to operate at all until series of measurements such as pipetting, diluting, measuring DO, etc., are completed after an instruction for starting an operation by setting a pallet 1 to a conveyor 6a and inputting data to a computer and the pallet 1 is removed from a delivery conveyor. Analysis of the measured results is automatically conducted, a process of the operation is rapidly executed. Further, since the pipetting, diluting and measuring of the DO are conducted by a robot 22, there is no artificial miss, and it is very accurate. In addition, a memory for information necessary for an inspection and an inspected result is provided at an end of the pallet 1. Accordingly, since the computer can be accessed and information necessary for the inspection may all be stored, a note for storage is almost eliminated, and an operating efficiency is largely improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality analysis method and apparatus for automatically analyzing BOD (biochemical oxygen demand) or COD (chemical oxygen demand).

[0002]

2. Description of the Related Art Generally, the quality of water such as river water and waste water is represented by a BOD value or a COD value.
IS (Japanese Industrial Standards), DO (dissolved oxygen content) after injecting a diluting solution containing microorganisms and oxidizing agents into the water to be inspected
Was measured and stored for a predetermined number of days (generally 5 days) under a predetermined temperature condition, and then the DO was measured again to obtain the DO value (DO1) for the first time and the DO value (DO5) for the second time. This is done by detecting the difference.

However, in BOD analysis, for example,
When injecting a diluting liquid containing microorganisms into the water to be inspected, the total amount is set to be a predetermined amount of 100 to 300 ml, but the total amount is set to 102 ml There are also cases. In the past, inspectors used to suck water to be inspected and diluent into multiple bottles with a dropper and inject them, so it is extremely difficult to inject such a delicate amount into all bottles with the same accuracy. It was difficult, lacked in accuracy, and inferior in accuracy.
In addition to these, detailed work is required such as attaching a label to each of the flasks, and entering sample information such as a management number, a sampling location of water to be inspected, and inspection results on each label. Moreover, it takes at least 5 days to complete all the inspections, so 1 bottle of each flask is required during that period.
Must be stored as a set.

As described above, it is difficult to control the amount of liquid in the inspection of water quality, and since it requires time-consuming and detailed manual work and caution in storage, human error is likely to occur. On the other hand, recently, there is an increasing demand for preservation of the global environment, and the number of water quality inspections is increasing. Therefore, it is desired to improve the work efficiency so that the water quality inspection can be performed accurately and quickly.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in particular, it is possible to automate a series of operations in water quality inspection and eliminate human error to improve the efficiency of inspection work. It is an object of the present invention to provide a water quality analysis method and an apparatus for the same.

[0006]

In order to achieve the above object, in the water quality analysis method according to the present invention, a sample bottle containing water to be inspected, a plurality of flasks and stoppers of the bottles are determined. Placed in a fixed position, water source, inspection method,
Position a pallet equipped with a storage device that stores inspection information such as control numbers, inject the water to be inspected from the sample bottles on the pallet into the flask in predetermined amounts, and further inject the predetermined diluent. After injecting into the above-mentioned flask, the dissolved oxygen in each above-mentioned bottle is measured (first measurement), the measurement result is written in the storage device of the above-mentioned pallet by a computer, and the above-mentioned pallet is taken out and predetermined. After storing the pallet at a predetermined position for a predetermined number of days at the temperature of 1, the dissolved oxygen in the flask is measured (second measurement), and the inspection information of the storage device of the pallet and the It is characterized in that predetermined data processing is performed based on the measurement results of the first and second measurements.

The first measurement result may be written in another storage means together with the inspection information stored in the storage device instead of the storage device of the pallet.

Further, the water quality analyzer according to the present invention has a sample bottle containing water to be inspected, a plurality of flasks, and stoppers of the bottles, respectively. A pallet equipped with a storage device for storing inspection information, a positioning device for positioning the pallet at a predetermined position, and a portion for injecting water to be inspected from the sample bottle of the positioned pallet into a predetermined amount by a predetermined amount. A pouring device, a diluting device for pouring and diluting a predetermined diluent into each of the above-mentioned flasks, a measuring device for measuring dissolved oxygen in each of the above-mentioned flasks, controlling the operation of each of the above-mentioned devices and It is characterized in that it is provided with a control device that performs predetermined data processing based on the inspection information of the storage device and the measurement result of the measuring device.

The dispensing device, the diluting device, and the measuring device may be constituted by a robot device including a robot. Further, the pallet has a sample bottle, a flask, and a bottle for containing water to be inspected. It is preferable to form a mounting portion that mounts the plug and the plug at predetermined positions.

Further, the positioning device includes a support means disposed below the pallet to support the pallet,
The holding means is arranged on the upper part of the pallet and is provided so as to be able to come into contact with the peripheral edge of the opening of the bottle on the pallet, and the supporting means or the driving means of the holding means. It is preferable that it is configured to be sandwiched between the means and the holding means.

Further, it is preferable that a brim is formed so as to overhang the periphery of the stopper of the flask.

[0012]

[Effect] The water quality analysis method according to the present invention positions a sample bottle, a flask, and a stopper at a predetermined position and uses a pallet provided with a storage device as a handling unit for positioning.
Water quality analysis is performed by a series of work processes such as dispensing, dilution, measurement, data writing and arithmetic processing, and all of these work processes can be automated. Therefore, the process of water quality analysis can be automated, which can significantly improve the work efficiency by eliminating human error, and also can automate the liquid volume management, which greatly improves the measurement accuracy. it can.

Further, according to the water quality analyzer of the present invention, in addition to positioning the pallet, a series of measurements such as dispensing, dilution, and dissolved oxygen measurement and analysis of the measurement results are automatically performed. Therefore, the work process can be performed accurately and promptly, and the management of the liquid amount in the case of manual work and the time-consuming fine manual work can be omitted, so that the efficiency of the inspection work can be remarkably improved. .

When the dispensing device, the diluting device and the measuring device are constituted by a robot device including a robot, the above devices can be assembled efficiently.

In relation to this, when the stopper is pulled out from the bottle with the robot hand when opening the stopper, the stopper is rotated while pulling it out, but since the flange is formed on the periphery of the stopper, the stopper is formed. Since the radius of the robot becomes larger, it can give a larger turning force than when there is no tsuba, and the robot hand can be engaged with the lower surface of the tsuba, so the cap must be securely rotated to open it. You can

Further, since one set of the sample bottle, the flask and the stopper are always placed on the pallet at predetermined positions, it is possible to prevent the mistake of mixing other bottles and the like. Moreover, since a storage device for storing the information necessary for the inspection and the inspection result is provided at the end of the pallet, it is possible to access the computer and store all the information necessary for the inspection in the storage device. , The label is attached to the flask and the sample bottle, the information is entered each time measurement is performed, and the troublesome data management work of transcribing the measurement result in a notebook or a list is not required, and the work efficiency is significantly improved. Moreover, since the computer can give operation instructions to each device based on the data read from the storage device,
The control of the device becomes flexible, and the operator does not have to manually input or operate the computer for each work process.

Further, according to the positioning device, when the pallet is positioned, the peripheral edge of the opening of the bottle on the pallet is in contact with the pressing means, so that the stopper and the sample bottle are separated during the opening operation. Even if they are tightly bound,
Only the stopper can be pulled out without raising the sample bottle together with the stopper.

[0018]

EXAMPLES Here, the water quality analysis method according to the present invention is applied to BOD.
Explaining the analysis of, first, the sample bottle containing the water to be inspected, a plurality of flasks and the stopper of each bottle are placed at respective predetermined positions, and the water intake source, the inspection method,
A plurality of pallets having a storage device for storing inspection information such as management numbers are prepared. For such a palette,
What is shown in FIG. 3 is preferable. In the figure, reference numeral 1 is a pallet, 2 is a sample bottle, 3 is a bottle, 4 is a stopper, and 5 is a storage device (ID carrier). Normally, each pallet 1 is configured so that one sample bottle 2, five flasks 3 and stoppers 4 can be placed.

Next, the first measurement of dissolved oxygen is performed. In this case, the water source of the sample bottle, the management number, etc. are stored in the storage device of the pallet, and the pallet is positioned at a predetermined position. Then, after aerating and stirring the sample bottles on the pallet as a pre-process, inject a predetermined amount of water to be inspected (dispensed) into each of the flasks, and then pour a diluent into the flask. To dilute. In this case, what to do with the total amount of water to be inspected and the diluting solution, how many flasks to dispense, what to do with the dilution ratio of the flask, etc. may be determined according to JIS.

Here, the first dissolved oxygen measurement in each of the flasks is performed. A DO sensor may be used for this measurement. After the measurement, cap the flask. The measurement result is written by the computer in the storage device of the pallet.

Thereafter, the pallet is unloaded and stored under a predetermined temperature condition (20 ° C.) for a predetermined number of days (5 days).

Next, after the storage period has elapsed, the pallet is positioned at a predetermined position, the stopper of the bottle is unplugged, and the D
Oxygen in the flask is measured by O sensor (second
Then, predetermined data processing is performed based on the inspection information in the storage device of the pallet and the measurement results of the first and second measurements, and the BOD value is calculated for the water to be inspected in the sample bottle of the pallet. , The analysis is complete. The above steps may be sequentially performed for all pallets.

The above water quality analysis method is carried out by collecting the sample bottle, the plurality of flasks and the stoppers thereof into one pallet, and using this pallet as a handling unit. That is, the positioning is performed on the pallet, the first and second oxygen measurements target only the object to be inspected on the pallet, and the storage is also performed on a pallet basis, and various data necessary for data processing are also stored on the pallet storage device. To remember. Therefore, the inspection process is greatly simplified.

Further, the positioning can be performed by an appropriate positioning device, and the storage and processing of data such as measurement results can be processed by writing, reading, and calculation of data by a computer. By the way, the first and second oxygen measurements are individual operations performed on each of the flasks on the pallet and are not a single operation on the pallet itself. It is the work of grasping the inserted nozzle and DO sensor and putting them in and out of the bottle, and the work of sealing and opening the bottle. Since the positions of the bottles and stoppers are set on the positioned pallets, it is possible to perform these tasks without moving the bottles by a robot device using an industrial robot or other automation device. Become.

That is, in the above-mentioned water quality analysis method, positioning, dispensing, dilution, measurement, and data writing are performed with a pallet provided with a storage device as well as a sample bottle, a flask and a stopper placed at a predetermined position. -Water quality analysis is performed by a series of work processes such as arithmetic processing, and all of these work processes can be automated. Therefore, the process of water quality analysis can be automated, whereby human error can be eliminated, work efficiency can be significantly improved, and liquid quantity management can be automated, so that measurement accuracy can be significantly improved.

Although the first measurement result is preferably written in the storage device of the pallet, instead, it is stored in a storage means such as a data processing device (computer) together with the inspection information stored in the storage device of the pallet. It may be configured to write.

Next, a water quality analyzer for carrying out the above analysis method will be described. Although this analyzer is configured for BOD measurement, it can also be applied to COD measurement.

As shown in FIGS. 1 and 2, the water quality analyzer includes a pallet 1 provided on a carry-in / carry-out conveyor device 6 and a device stand 7 on the destination side of the carry-in conveyor device 6a.
It is composed of various devices described below which are arranged above.

As shown in FIGS. 3 and 4, the pallet 1 is provided with a rectangular base 1a, and as described above, one sample bottle 2 for containing water to be inspected is placed on the upper portion thereof.
The five mounting flasks 3 and the mounting portions 8 for mounting the same number of stoppers 4 are formed at predetermined positions. The mounting portions 8a of the sample bottles 2 and the flasks 3 are formed in a recessed shape approximately equal to the outer diameters of these bottles, and the mounting portions 8b of the stoppers 4 project in a rod shape on the base 1a and are mounted on the upper surface thereof. A recess 9 having a size capable of accommodating the downward plug 4 is formed so that the placed plug 4 does not roll over. Further, a positioning hole 10 (also serving as a water draining hole) is formed on the lower surface of the base 1a. In addition, handle 1 is attached to both ends of pallet 1.
1 is formed, and one grip 11 is provided with an ID carrier 5 which is a readable / writable storage device for storing inspection information such as a sample name, a management number, and an inspection result necessary for the inspection. The ID carrier 5 may be detachable from the pallet 1. As shown in FIGS. 6 (a) and 6 (b), a brim 12 is formed so as to overhang the periphery of the stopper 4 of the flask 3.

On the device stand 7, a positioning device for the pallet 1, a dispensing device for pouring a predetermined amount of water to be inspected from the sample bottle 2 of the positioned pallet 1 into the flask 3 and a predetermined dilution. A diluting device for injecting a liquid into each of the flasks 3 for dilution, a measuring device for measuring dissolved oxygen in each of the flasks 3, an inspection information of the storage device of the pallet 1 while controlling the devices. A control device for performing predetermined data processing based on the measurement result of the measurement device is provided.

The positioning device positions the flask 3 at a predetermined position so as not to move vertically.
As shown in FIG. 5 (a), the lifting / lowering device 14 is arranged below the pallet moving surface by the carry-in conveyor device 6a, and the holding plate 15 is arranged above the lifting / lowering device 14. A support plate 16 for supporting the pallet 1 is provided at the upper end of the lifting device 14, and a support plate 16 is provided above the support plate 16.
A locating pin 17 of a book is provided upward, and each locating pin 17 is formed so as to correspond to the positioning hole 10 formed on the lower surface of the pallet 1. A receiving member 13 that receives the side end of the pallet 1 is formed on the lifting device 14, and the receiving member 13 and the support plate 16 can be operated relatively.

Further, the holding plate 15 is laterally projected and fixed from the upper end of the support column 18 which is erected on the device stand 7, and is placed at a position corresponding to the peripheral edge of the opening of the balance 3 of the pallet 1 on the elevating device 14. A hole 19 is formed (see FIGS. 3 and 4). A large escape hole 20 is formed at a position corresponding to the sample bottle 2, the stopper 4 and the like excluding the flask 3.

A stopper 21 for stopping the movement of the pallet 1 by the positioning device is formed in front of the movement of the pallet 1 of the carry-in conveyor device.

According to the above construction, when the pallet 1 is stopped by the stopper 21, the elevating device 14 is actuated to raise the support plate 16 as shown in FIG. Positioning hole 10
(Refer to FIG. 4), the pallet 1 is pushed up in this state, and the operation of the elevating device 14 is stopped at the position where the peripheral edge of the opening of the flask 3 comes into contact with the peripheral edge of the hole 19 of the pressing plate 15. As a result, the pallet 1 is positioned as shown in FIG. 4, and the bottle 3 is fixed by the pallet 1 and the holding plate 15.

The positioning device may be any device that sandwiches the bottle 3 on the pallet 1 between the supporting means for supporting the lower part of the pallet and the pressing means for pressing the upper part, and the pressing means is directed to the pallet by the driving means. It may be configured so that it is lowered.

Next, an industrial robot 22 (see FIGS. 1 and 2) is arranged in the center of the device stand 7. The robot 22 is provided with a robot hand 23 that can be grasped, separated, rotated, or moved according to a command from a computer. A water injection nozzle 24, a diluting liquid injection nozzle 25, and a DO detection sensor 26 are arranged in the operating range a of the robot 22, and a dispensing device, a diluting device, an oxygen measuring device, and the like described below are configured as a robot device.

That is, the robot 22 is set to take out the water injection nozzle 24 and sequentially transfer it from the sample bottle 2 of the positioned pallet 1 to the flask 3 and when the water injection nozzle 24 enters the sample bottle 2. In addition, a dispensing device is configured together with a water injection device (not shown) that absorbs a predetermined amount of water to be inspected and injects it when it is transferred to the flask 3.

The robot 22 is set so as to take out the diluent injection nozzle 25 from the apparatus table 7 and sequentially transfer it to the flask 3 of the positioned pallet 1, and the diluent injection nozzle 25 is placed in the flask 3. A diluting device is configured together with an injecting device that injects a predetermined amount of the diluting liquid in the diluting liquid retaining container 27 when the liquid enters.

Further, the robot 22 is set so as to take out the DO sensor 26 and put it into and out of the flask 3 into which the diluting liquid has been injected, and constitutes an oxygen measuring device together with a reading device of the measured value of the DO sensor 26. ing.

The devices for dispensing, diluting, DO measurement and the like do not necessarily use the robot 22.

The operation of each of the above devices is centrally managed by a computer (control device) not shown, and is totally controlled by the operation panel. Further, the computer reads the inspection information of the ID carrier 5 of the pallet 1, writes the measurement data by the measuring device in the ID carrier 5 of the pallet 1, or sets a predetermined data based on the measurement result of the measuring device. It is configured to perform processing.

The water quality analyzer described above is further equipped with the following peripheral devices, which are also centrally managed by a computer. First, an opening cap device for the bottle 3 is provided. This is the stopper 4 of the vial 3 on the pallet 1 positioned by the robot 22.
Is lifted and opened, and is placed on a predetermined placement portion of the pallet 1, or the stopper 4 on the pallet 1 is lifted and fitted into the mouth of the bottle 3 to seal the lid. 28
Is a cleaning device, which cleans the dispensing nozzle and the DO sensor 26 by the robot 22. Reference numeral 29 denotes a read / write head, which is arranged at both ends of the carry-in conveyor device 6a for writing and reading the ID carrier of the pallet 1. Further, 30 is a flask containing water for calibration (for setting the standard of dissolved oxygen). Device 31 for aerating and stirring the water to be inspected in the sample bottle 2 of the pallet 1 as a pre-measurement step
And its cleaning equipment is also attached.

Next, the operation mode of the above-mentioned analyzer will be described. First, in the analysis work, the sample bottle 2 containing the water to be inspected, the flask 3 and the stopper 4 are placed on a predetermined placing portion in the pallet 1. Further, inspection information (intake source of water to be inspected, number of divisions of inspection, dilution ratio, etc.) is input to the computer. Then, the pallet 1 is loaded into the conveyor device 6
Place it on the set position of a. If there is another sample water to be analyzed, the same work as described above is repeated and a predetermined number of pallets 1 are set on the carry-in conveyor device 6a.

The data input from the computer is stored in the ID carrier 5 on the pallet 1 via one read / write head 29, and when the pallet carry-in button on the conveyor operation panel 32 is pressed, the carry-in conveyor device 6a operates and the pallet is carried out. 1 is carried forward.

When a command to start inspection is issued from the computer, the carry-in conveyor device 6a carries the pallet 1. The pallet 1 stops at the position of the aeration / agitation device 31, and the robot 2
2 aerates and agitates the test water in the sample bottle 2 on the pallet 1. After that, the pallet 1 is again loaded into the carry-in conveyor device 6a.
And is stopped by hitting the positioning stopper 21 and the positioning device is activated to move the pallet 1 to the lifting device 14
It is lifted up by and is positioned at a predetermined position. At this time, the dispensing device is activated, and the robot 22 handles the water injection nozzle 24 on the pallet 1 to inject the water to be inspected in the sample bottle 2 into the predetermined number of the flasks 3 by the amount instructed by the computer. To do.

Furthermore, the robot 2 is operated by operating the diluting device.
At 2, the diluting liquid injection nozzle 25 is handled to inject the diluting liquid in the diluting liquid holding container 27 into each of the vials 3 in an amount instructed by the computer. Dispensing and diluting a predetermined number of flasks 3 repeatedly, and prepare a mixed solution of water to be inspected and a diluent in each flask 3.

Next, the oxygen measuring device is activated and the robot 2
2 inserts the tip of the DO sensor 26 into the first flask 3 to measure DO. The data resulting from this first DO measurement (DO1) is automatically input to the computer and stored in the ID carrier 5 via the other read / write head 29. The tip of the DO sensor 26 is automatically cleaned by the cleaning device by the robot 22 before moving to the next flask 3. Further, when the measurement of the DO of a predetermined number of the bottles 3 on one pallet 1 is completed, the tip of the DO sensor 26 and the dispensing nozzle are carried to the robot 22 and automatically cleaned by the cleaning device. The aeration and agitation device is also cleaned by a special cleaning device.

The result of the first DO measurement may be stored not in the ID carrier 5 but in another storage means, for example, the memory of the computer.

When the robot 22 finishes a series of operations instructed by the computer, the unsealing device operates, and the robot 22 fits each stopper 4 on the pallet 1 into the mouth of the bottle 3 and seals it. After that, when the operation of the positioning device is released and the pallet 1 is lifted down, first, as shown in FIG. 5 (a), the support plate 16 of the lifting device is operated and the locate pin 1 is moved.
When the receiving member 13 receives the pallet 1 at a position where the pallet 7 is removed, the lateral transfer machine 33 operates to support the lowered pallet 1, and the engaging piece 35 is applied to the pallet 1 along the carriage rail 35. It is transferred onto the carry-out conveyor device 6b, and the pallet 1 is lifted down and placed on the carry-out conveyor device 6b.

Next, the next pallet 1 is pulled into the previous process, and a series of inspection and measurement operations starting from aeration and stirring are sequentially repeated for this pallet 1 according to a command from the computer. Then, the first DO measurement is completed when the predetermined number of pallets 1 preset on the carry-in conveyor device 6a are handled.

When the first DO measurement is completed by a predetermined number of sets, the pallets 1 accumulated in the carry-out conveyor device 6b are sent one by one to the end of the carry-out conveyor device 6b. The pallet 1 sent to the end of the carry-out conveyor is manually taken out, and the first measurement is completed.

The pallet 1 which has undergone the above-mentioned steps is stored at a constant temperature (20 ° C.) for 5 days with the flask 3 and the like mounted.

After the lapse of 5 days, the pallet 1 is set on the carry-in conveyor device 6a as in the first DO measurement, and the second DO measurement inspection is set in the computer.

When a command to start inspection is issued from the computer, the carry-in conveyor device 6a carries in one pallet one by one,
The top pallet 1 is positioned by the positioning device. When the computer confirms the positioning, the pallet 1
The first measurement result and the measurement condition stored in the ID carrier 5 are read, and an operation instruction is given to the robot 22 based on the read data.

After opening the bottle 3 of the robot 22, the robot 22 inserts the tip of the DO sensor 26 into the bottle 3 and performs the second oxygen measurement (DO5). In this case as well, the DO sensor 26 is automatically cleaned before being moved from one flask 3 to the next.

After the DO measurement is performed on a predetermined number of the flasks 3, the measured values are managed by a computer and predetermined data processing is performed. Then, when the measurement is completed, the computer erases the information stored in the ID carrier 5 of the pallet 1.

The pallets 1 for which the measurement has been completed are sequentially transferred from the lateral transfer device 33 to the carry-out conveyor device 6b, sent to the end of the carry-out conveyor and taken out, and the second measurement work is completed. When the measurement is completed, the computer outputs the analysis result to the printer.

As described in detail above, in the above water quality analyzer, the operator carries the pallet 1 into the conveyor system 6a.
Set, and after inputting data to the computer and instructing to start the work, it is necessary to put out all hands until a series of measurement such as dispensing, dilution, DO measurement is completed and the pallet 1 is taken out from the carry-out conveyor. Absent. The analysis of the measurement result is also automatically performed. Therefore, the work processing becomes quick. Moreover, since dispensing, dilution, and DO measurement are performed by a robot device, there is no human error and it is very accurate. In the case of manual work, management of the liquid volume and time-consuming and detailed manual work are omitted. You can

Further, since one set of the sample bottle 2, the flask 3 and the stopper 4 are always placed on the pallet 1 at the predetermined positions, it is possible to prevent the mistake of mixing the other bottles 3 and the like. . Moreover, an ID carrier 5, which is a readable / writable storage device for storing information necessary for the inspection and the inspection result, is provided at the end of the pallet 1. Therefore,
Since it is possible to access the computer and store all the information required for the inspection in the ID carrier 5,
Since there is no need for troublesome data management work such as attaching a label to the sample bottle 2 and filling in information each time measurement is performed, and posting the measurement result to a notebook or a list, there is almost no need for storage precautions. The efficiency is greatly improved. Moreover, since the computer can give an operation instruction to each device based on the data read from the ID carrier 5, the control of the device becomes flexible, and the operator manually inputs it to the computer for each work process. No need to operate.

Further, since the peripheral edge of the opening of the flask 3 on the positioned pallet 1 is in contact with the pressing plate, even when the stopper 4 and the sample bottle 2 are firmly connected to each other during the opening operation. It is possible to remove only the stopper 4 without raising the sample bottle 2 together with the stopper 4. The opening peripheral portion of the sample bottle 2 also includes the shoulder portion of the sample bottle 2.

In connection with this, when the stopper 4 is pulled out from the flask 3 by the robot hand 23 when opening the stopper, the stopper 4 is pulled out while rotating, but the flange 12 is provided around the stopper 3 of the stopper 3. Since the plug 4 is formed, the radius of the plug 4 becomes large, so that a large rotational force can be applied as compared with the case where the collar 12 is not provided, and the plug 4 can be reliably rotated and opened. Furthermore, if the outer peripheral surface of the collar 12 is formed as a frosted glass-like rough surface, the contact frictional force between the robot hand 23 and the collar 12 becomes large, and the plug 4 can be rotated without slipping, so that it is more reliable. Can be opened.

In the above analyzer, dispensing, dilution,
The work such as DO measurement does not have to be performed by the robot 22 device using the industrial robot 22. Furthermore, the first measurement data is not necessarily limited to the one stored in the ID carrier 5 of the pallet 1. It may be configured to be stored in another storage means, for example, the memory of the computer.

Further, although the analyzer described above automatically performs the BOD inspection, it can also be applied to the COD inspection.

[Brief description of drawings]

FIG. 1 is a side view of a water quality analyzer according to the present invention.

FIG. 2 is a plan view of the water quality analyzer.

FIG. 3 is a perspective view of a pallet.

FIG. 4 is a sectional view of a pallet.

5 (a) and 5 (b) are explanatory views of an operation mode of a pallet positioning device.

6 (a) and 6 (b) are perspective views of the stopper and the stopper of the vial, respectively.

[Explanation of symbols]

 1 Pallet 2 Sample bottle 3 Flannel 4 Stopper 12 Tsuba 15 Holding plate 16 Support plate 22 Robot

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical indication location G01N 35/02 B 7370-2J (72) Inventor Masanori Utsugi 3-27 Tamadaira, Hino-shi, Tokyo Vilahino

Claims (7)

[Claims] 1. A sample bottle containing water to be inspected, a plurality of flasks, and stoppers of the bottles are placed at respective predetermined positions, and inspection information such as water intake source, inspection method, control number, etc. is stored. A pallet equipped with a storage device for storing is positioned at a predetermined position, and water to be inspected is poured from the sample bottle on the pallet into the flask by a predetermined amount, and further a predetermined diluent is poured into the flask. After that, the dissolved oxygen in each of the flasks is measured (first measurement), the measurement result is written into the storage device of the pallet by the computer, and the pallet is further unloaded and kept at a predetermined temperature for a predetermined number of days. After storage, position the pallet at a predetermined position and measure the dissolved oxygen in the flask (second
(A second measurement), and further, predetermined data processing is performed based on the inspection information of the pallet storage device and the first and second measurement results. 2. The water quality according to claim 1, wherein the result of the first measurement is written in another storage means together with the inspection information stored in the storage device instead of the storage device of the pallet. Analysis method. 3. A storage device for arranging a sample bottle containing water to be inspected, a plurality of flasks, and stoppers of the bottles, and storing inspection information such as a water intake source, inspection method, control number, etc. A pallet, a positioning device for positioning the pallet at a predetermined position, a dispensing device for injecting water to be inspected from the sample bottle of the positioned pallet into a flask by a predetermined amount, and a predetermined diluent. A diluting device for injecting and diluting each of the flasks, a measuring device for measuring dissolved oxygen in each of the flasks, an operation information of the above-mentioned devices, and inspection information of the storage device of the pallet and the measuring device. And a control device that performs predetermined data processing based on the measurement result of 1. 4. The water quality analyzer according to claim 3, wherein the dispensing device, the diluting device, and the measuring device are constituted by a robot device including a robot. 5. The pallet is formed with mounting portions for mounting a sample bottle for containing water to be inspected, a bottle and a stopper of the bottle at predetermined positions, respectively. Item 3. The water quality analyzer according to item 3. 6. The positioning device is provided at a lower part of the pallet to support the pallet, and at an upper part of the pallet so as to come into contact with an opening peripheral portion of a bottle on the pallet. 4. The water quality analyzer according to claim 3, comprising a holding means and the supporting means or a driving means for the holding means, wherein the bottle on the pallet is sandwiched between the supporting means and the holding means. 7. The water quality analyzer according to claim 3, wherein a brim is formed on the periphery of the stopper of the flask.