JPH09222385A - Sampling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make dilution adjustment and recognition of dilution rate automatic by supplying a non-fluid sample with, by a dilution liquid supply means, dilution liquid, automatically mix-adjusting a fluid sample, and enabling automatic calculation of is dilution rate. SOLUTION: From a discharge outlet 12 of a hopper 6, a dehydration cake is dropped onto a belt 15, and when water content measurement is required while being carried on the second belt conveyer 10, a driving wheel 13 is rotated in the positive direction, and the dehydration cake is transported to a weight measurement equipment 8, and weight is measured on a stage 17. Before the cake is carried to a regulating vessel 21, a signal is sent to the fourth open/close valve 33 with the signal of a control calculation device 5, and, a dilution water tank 32 and a dilution water reservoir vessel 29 are communicated each other with a piping 34, so that the dilution water is introduced into the vessel 29 from the tank 32. Then, a specified amount of dilution water is, through the piping 31, sent to a regulating vessel 21. A sheet 18 is pulled into the vessel 21, so that the cake is thrown into the dilution water. With the signal from the device 5, a driving motor M is driven, mix-stirred with a rotation shaft with blades 22, so that a fluid material is obtained. Based on the weight of thrown cake and dilution water, dilution rate is calculated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sampling device, and more particularly to a sampling device capable of diluting a non-fluid substance containing a liquid to obtain a sample, and a non-fluid substance containing the liquid. The present invention relates to a sump priming device that can be used as a sample by diluting and can calculate the dilution rate.

[0002]

2. Description of the Related Art Understanding the water content or concentration of sludge slurry or its dehydrated cake is important for setting conditions and managing wastewater treatment.

One of the reasons for its importance is explained below. For example, in the treatment of sewage, a dehydration cake is formed through a precipitation treatment, an aeration treatment, a biological treatment, a chemical treatment, a coagulation dehydration treatment, and the like, and finally, the dehydration cake is incinerated. If the water content of the dehydrated cake is high when the dehydrated cake is incinerated, the fuel cost for the incineration process becomes high. On the other hand, in order to suppress the fuel cost at the time of incineration treatment to a low level, the water content in the dehydrated cake should be lowered,
In order to reduce the water content, there is a problem that the cost required for the process until the coagulation dehydration treatment is finished increases.

Therefore, in sewage treatment, etc., the water content in the dehydrated cake should be determined so that the total cost of the incineration process and the process cost up to the incineration process can be minimized. Is requested. Therefore, it is important to understand the water content or concentration of the dehydrated cake in wastewater treatment.

Conventionally, the water content of sludge slurry or its dehydrated cake has been manually determined. That is, the operator first manually collects a predetermined amount of dehydrated cake from the flow of the dehydrated cake being transferred, for example. A predetermined amount of the dehydrated cake thus collected is used as a sample, and the sample is weighed with a balance or the like. The sample after weighing is loaded in a dryer and dried. After drying for a predetermined time, the dry sample is weighed. Thus, the water content or water content of the sample can be measured from the weight of the sample before and after drying.

[0006] Recently, as a method for rapidly measuring the water content of a sample, a method employing a heating and drying method using infrared rays has been proposed (Japanese Patent Publication No. 6-19317 and Japanese Patent Publication No.
(See Japanese Patent No. 48412), and an automatic infrared heating and drying moisture meter (trade name "Cricket Auto", manufactured by Kurita Water Industries Ltd.) is also provided as a commercial product.

In this automatic infrared heating / drying moisture meter, a sample dish supplying section, a measuring section and a sample sampling section are provided along a horizontally arranged sample dish moving mechanism. In the sample dish supply unit, the aluminum sheet fed from the aluminum sheet supply roll is cut by the cut press device. Next, the cut aluminum sheet piece is press-molded to form a sample dish. This sample dish
The sample pan moving mechanism transfers the sample to the sample collecting section. In the sample collecting section, a predetermined amount of sample is collected from the flow of the sample circulating in the pipe, and the collected sample is received by the sample dish. After that, the sample dish is transferred to the measuring unit, and is heated and dried by the infrared heating and drying device arranged above the load measuring device in the measuring unit, and the weight before drying by the load measuring device, that is, the sample dish and the sample before drying. The total weight W ₁ and the weight after drying, that is, the total weight W _{2 of the} sample dish and the dried sample are measured. The water content of the sample is determined by the difference between the sample weight before and after drying, that is, W ₁ -W ₂ .

This automatic infrared heating and drying moisture meter can determine the water content of a fluid sample, but cannot directly determine the water content of a non-fluid sample. When determining the water content of a non-fluid material, it must be prepared into a fluid material by diluting the non-fluid material with a liquid. When the dilution rate of the prepared fluid is known, the water content of the non-fluid can be calculated by using the automatic infrared heating and drying moisture meter.

Even in the case of obtaining the water content of the non-fluid material as described above, there is a disadvantage that the non-fluid material has to be prepared into a fluid material by hand.

In addition to the automatic infrared heating moisture meter, once the non-fluid material is once made into a fluid material, the characteristics of the fluid material such as conductivity, component concentration, viscosity, shearing force, absorbance, Moisture content, pH, etc. may be measured. Even in that case, it is very complicated and troublesome to manually prepare the non-fluid material into the fluid material.

[0011]

An object of the present invention is to solve the above-mentioned problems. It is an object of the present invention to provide a sampling device which automatically prepares a non-fluid material by diluting it into a fluid material and can recognize the dilution rate. An object of the present invention is to provide a sampling device that can automatically prepare a non-fluid substance into a fluid substance and can automatically calculate the dilution rate thereof. An object of the present invention is to provide a sampling device capable of diluting a dehydrated cake to prepare a sample having fluidity, and calculating the dilution rate automatically.

[0012]

The invention according to claim 1 for solving the above-mentioned problems is a sample collecting means for collecting a non-fluid substance containing a liquid, and the non-flow sampled by the sample collecting means. Weighing means for weighing a sample of the physical property, diluent supply means for supplying a predetermined amount of diluent, mixing the sample weighed by the weighing means and diluent supplied by the diluent supply means A fluid sample preparing means for the fluid sample,
Sampling operation in the sampling means, weighing operation in the weighing means, operation in the diluent supply means to supply a predetermined amount of diluent to the fluid sample preparing means, and the weighing in the fluid sample preparing means 3. A sampling device comprising: a control means for controlling an operation of mixing the sample weighed by the means with the diluent supplied from the diluent supply means. The invention according to claim 2, Sampling means for collecting a non-fluid material containing a liquid, weighing means for weighing a sample of the non-fluid material collected by the sampling means, diluent supply means for supplying a predetermined amount of diluent, and A fluid sample preparing means for mixing the sample weighed by the weighing means and the diluent supplied from the diluent supplying means into a fluid sample, and a sample collecting means for collecting the sample. Operation, weighing operation in the weighing means, operation in the diluent supply means for supplying a predetermined amount of diluent to the fluid sample preparation means, and in the fluid sample preparation means, the sample weighed by the weighing means Control means for controlling the operation of mixing the diluent supplied from the diluent supply means, the weight of the diluent introduced into the fluid sample preparation means from the diluent supply means, and the weighted by the weighing means. A non-fluid substance is calculated based on the weight of the non-fluid substance, and a computing unit for computing a dilution rate of the non-fluid substance is provided. The sampling device according to claim 1 or 2, wherein the sampling device is a dehydrated cake or a non-fluid sludge slurry.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

(General Description) The sampling apparatus according to the present invention is an apparatus capable of preparing a fluid material by diluting a non-fluid material with a diluting liquid and further clarifying the dilution rate.

The non-fluid substance which can be processed by this sampling device is a substance or material containing a liquid and having no ordinary flowability by itself. As the non-fluid material, for example, in addition to non-fluid materials generated in various fields such as food, chemicals, and chemicals, kneaded materials, kneaded materials, non-fluid sludge slurry generated by sewage treatment, and A dehydrated cake and the like can be mentioned as a suitable example.

The sampling device according to the present invention comprises a sample collection means, a weighing means, a diluent supply means, a fluid sample preparation means, a control means, and an arithmetic means which is added as necessary. The details will be generally described below in detail.

(1) Sampling means This sampling means is a means for collecting a non-fluid substance containing a liquid and transferring it to a weighing means.

The non-fluid material to be collected may be in the state of being transferred or may be stored.

Therefore, as the sample collecting means, the first sample collecting means for collecting the non-fluid material transferred from the predetermined place to the other predetermined place and transferring it to the weighing means, and the predetermined sample collecting means The second sample collecting means for collecting the non-fluid material stored in the above-mentioned place and transferring it to the weighing means.

The first sampling means may, for example, fall vertically due to gravity, or fall (or slide down) on an inclined conveying surface according to gravity, or be forcibly conveyed by a conveying member such as a belt conveyor. A non-fluid substance that has been removed from the moving region in which it is moving, and, if necessary, a conveying device that transfers the non-fluid substance that has been taken out of the take-out device to the weighing means. Can be configured.

The take-out means may be constructed so as to guide, move, or transfer the non-fluid material from the moving area in which the non-fluid material is moving. A gutter-shaped guide or baffle extending from the inside of the moving area in which the non-fluid material is moving to the outside of the moving area, and a receiving opening arranged in the flowing area and opening in the flowing area. Examples thereof include a hopper having a portion and a discharge port that opens outside the region. It is sufficient that the conveying means can transfer the non-fluid material taken out by the take-out means to the weighing means. For example, the non-fluid matter taken out by the take-out means is placed and weighed by this means. A belt conveyer capable of being conveyed to, a non-fluid material taken out by the take-out means, and a moving container which is a receiver that can be moved from the take-out means to the weighing means. .

The second sample collecting means may employ various device configurations as long as it has a structure capable of collecting the stored non-fluid substance, for example, a predetermined amount of non-fluid substance. It has a collection member capable of collecting, for example, a cup, a shovel, a spatula, and a plurality of claws, which can be collected by piercing, scooping, or grasping a non-flowing material. Forks, etc.
This sampling member can be formed by having a movement operation member that can be sequentially moved to a location for storing the non-fluid material and the weighing means.

The sampling operation in these sampling means is controlled by the control means.

(2) Weighing Means This weighing means is a means for measuring the weight of the non-fluid material sampled by the sample sampling means.

As the weighing means, various weight measuring means can be adopted as long as the weight of the non-fluid material sampled by the sample sampling means can be weighed. For example, the non-fluid material which is a sample. A non-fluid material on the placing member is weighed and a measured data is input to an arithmetic unit described later. An automatic balance device or an automatic weight measuring device can be used.

A preferable weighing means is a means capable of measuring the weight of the non-fluid material collected by the sample collecting means and displaying the measurement result. Such a weighing means is particularly equipped with a display means for displaying the measurement result. As the display means, for example, CRT, X
Examples include Y plotters and liquid crystal display screens.

Even if the weighing means does not include the above-mentioned display means, the measurement result of the weight of the non-fluid material, which is output from the weighing means, is used as an electric signal to control means which will be described later. The measurement result may be displayed on the display means provided in the control means.

Further, the measurement result of the weight of the non-fluid material may be inputted as an electric signal to the control means which will be described later, and may be inputted to the calculating means. By inputting the measurement result as an electric signal to the calculating means, the calculating means can calculate the dilution rate of the non-fluid substance diluted by the fluid sample preparing means.

The weighing means measures the weight of the non-fluid material sampled by the sample-collecting means and then immediately transfers the collected non-fluid material to the fluid sample preparing means, for example. It suffices if the positions of the weighing means and the fluid sample preparation means are adjusted,
For example, when the weighing means and the fluid sample preparation means are located apart from each other, the weighing means transfers the weighed non-fluid material (weighed sample) to the fluid sample preparation means. Is preferably provided.

The weighed sample transfer means is a means configured to transfer the weighed non-fluid material to the fluid sample preparation means. Further, the operation of transferring the non-fluid material by the weighing sample transferring means is controlled by the control means.

The weighed sample transfer means may employ various device configurations as long as the non-fluid sample weighed by the weighed means can be transferred to the fluid sample preparation means.

By the way, since the non-fluid material in the present invention contains a liquid such as water, there is a concern that the non-fluid material may adhere or stick to the weighing means to hinder the function of the weighing means. In such a case, it is preferable to consider a weighing sample transferring means including a member for accommodating the non-fluid material in the weighing means, for example, a sheet for protecting the surface of the mounting member from the non-fluid material.

When this sheet is made of a material that is insoluble in the diluting liquid to be put into the fluid sample preparing means, this sheet is placed on the weighing means to measure the weight of the non-fluid material. It is formed in an endless form (in other words, endless form) so as to move on a placing member, for example, an upper plate in a balance device, reach the fluid sample preparing means, and then return to the original placing member, and drive appropriately. It may be an endless sheet formed so as to be cyclically driven by the means, and moves, for example, on the placing member in the weighing means to reach the fluid sample preparing means, and then is wound by an appropriate driving means. It may be a winding sheet formed so that it is sufficient to cover the placement member of the weighing means, for example, the placement surface of the placement member, on which the non-fluid material is placed and whose weight is measured. big It may be a sheet piece having a.

When the above-mentioned endless sheet or winding sheet which is insoluble in the diluting liquid is adopted, dilution water is sprinkled on the surface of the endless sheet or winding sheet facing the fluid sample preparing means to form an endless sheet. It is preferable to provide a washing device configured to wash out all the non-fluid substances on the upper or the winding sheet into the fluid sample preparing means.

When the cleaning device is provided, a drying device for drying the wet surface of the endless sheet or the winding sheet cleaned by the cleaning device, and water on the wet surface of the endless sheet or the winding sheet are removed. It is also preferable to appropriately provide a water removing device or the like. As this drying device, various device configurations can be adopted as long as the wet surface of the endless sheet or the winding sheet can be dried, for example, a heating device including a heater, a heat source such as an infrared lamp, An airflow injection device that can inject cold air or hot air can be used.
Further, the water removing device can employ various device configurations as long as it can remove water droplets attached to the surface of the wet endless sheet or the winding sheet, for example, the surface of the endless sheet or the winding sheet. A water removing device having a doctor blade for draining water by contacting with the endless sheet, or a water absorbing member such as a sponge, absorbent paper, cloth, non-woven fabric, etc. for absorbing water on the surface of the sheet by contacting the surface of the endless sheet or the winding sheet And a water removal device.

When the sheet is made of a material that is soluble in the diluting liquid introduced into the fluid sample preparing means, the sheet is unwound from the rewound sheet revolving material and placed on the weighing means, for example. It moves on the member and reaches the fluid sample preparing means while the non-fluid material is placed, and after reaching the fluid sample preparing means, it is dissolved by the diluent liquid sprayed by the cleaning device. It may be a long sheet, has an area and shape sufficient to cover the placing member in the weighing means, and is transferred onto the placing member in the weighing means from a predetermined section to remove non-fluid substances. It may be a sheet piece formed so as to be transferred from the mounting member to the fluid sample preparing means by an appropriate driving means in the mounted state.

As described above, the suitable weighed sample transfer means in the present invention is, in other words, prevents the weighing means from being contaminated by the non-fluid material, and moves the non-fluid material weighed by the weigher means. It can be said that it has a function of supplying this non-fluid material to the fluid sample preparing means.

As the weighing sample transferring means having such a function, in addition to using the above-mentioned sheet, a cup formed of a material insoluble in dilution water, a weighing means and a fluid sample preparing means are used. A cup transfer device that reciprocates the cup may be provided, and the cup formed of a material soluble in dilution water and the cup transferred from the weighing means to the fluid sample preparation means may be used. It is also possible to have a cup transfer device that discharges this cup into the fluid sample preparation means while containing the fluid substance.

The weight measuring operation of the weighing means is controlled by the control means.

(3) Diluting liquid supplying means This diluting liquid supplying means dilutes a predetermined weight of the non-fluid sample charged in the fluid sample preparing means with the diluting liquid to a target dilution rate or a dilution rate close to this. In order to do so, it is a device that supplies a predetermined amount of diluent to the fluid sample preparation means.

As the diluent supply means, various device configurations can be adopted as long as a predetermined amount of the diluent can be supplied to the fluid sample preparation means.

As an example of a suitable diluent supply means, a pipe arranged to supply the diluent to the fluid sample preparation means, and a diluent storage tank for storing the diluent supplied through this pipe A liquid level gauge provided in the fluid sample preparing means, and a supply stopping means for stopping the supply of the diluent to the fluid sample preparing means via the pipe when the liquid level gauge detects the liquid level, An example of the device configuration is a combination with a valve provided in the pipe. In this case, as the supply stopping means, instead of the valve, it is possible to employ a pump for pumping the diluting liquid from the diluting liquid storage tank to the fluid sample preparing means through the pipe, and by stopping the driving of the pump The supply of the diluent to the sex sample preparing means is stopped.

As another example of a suitable diluent supply means, a diluent storage tank and a diluent provided in the diluent storage tank and stored in the diluent storage tank reach a predetermined volume. In this case, an apparatus configuration having overflow means for overflowing the diluting liquid of a predetermined volume or more and piping with an opening / closing valve for supplying the diluting liquid in the diluting liquid storage tank to the fluid sample preparing means is provided. You can

The internal volume of the diluting liquid storage tank is such that the non-fluid substance is diluted with the diluting liquid in the fluid sample preparing means to achieve a target dilution ratio for preparing a fluid sample. When the volume is the same, the upper opening provided in the diluting liquid storage tank can be the overflow means. That is, when the diluent is supplied from the diluent source such as a tap into the diluent reservoir and the diluent overflows from the upper opening, the diluent is stopped when the diluent source such as a tap is stopped. At that stage, a predetermined volume of the diluting liquid can be supplied to the fluid sample preparing means from the diluting liquid storage tank. Further, as another overflow means, there can be mentioned a plurality of openable and closable overflow outlets provided in a vertical line on the inner wall of the diluent storage tank. If multiple overflow outlets that can be opened and closed are provided on the inner wall of the diluent storage tank, the storage capacity of the diluent in the diluent storage tank is determined according to the installation position of the overflow outlet, and the The amount of diluent supplied to the sample preparation means is also determined.

The diluting liquid in the diluting liquid supply means is usually the same kind of liquid as the liquid contained in the non-fluid substance, but depending on the purpose of the sampling device of the present invention,
The type of diluent may be different from the liquid contained in the non-flowable substance. Generally, water (tap water,
Whether to use ion-exchanged water, pure water, or the like is determined according to the purpose or use of the sampling device. ), An aqueous solution (including an aqueous solution containing a reagent, a dispersant, etc.), an organic solvent such as alcohol, or an organic solvent solution (a solution obtained by dissolving a reagent, a dispersant, etc. in an organic solvent). .) And the like.

When this sampling device is used as a sample preparation device for measuring the water content of a dehydrated cake or sludge slurry produced by sewage treatment, water is suitable as the diluting liquid.

The operation of supplying the diluent to the fluid sample preparing means by the diluent supplying means is also controlled by the control means.

(4) Fluid Sample Preparation Means This fluid sample preparation means comprises a predetermined weight of the non-fluid material supplied from the sampling and weighing means and a predetermined weight of the diluent supply means. Mix with the diluent,
A means for preparing a diluting fluid material having fluidity, and a preferable fluid sample preparation means is a non-fluid material having a predetermined weight, which is supplied from the sampling and weighing means, and a diluent supply means. A predetermined weight of the diluent to be supplied is mixed to prepare a flowable diluted flowable substance, and the prepared flowable substance has properties such as conductivity, component concentration, viscosity, shearing force, It is a means for transferring to a measuring means for measuring absorbance, water content, pH and the like.

As the fluid sample preparation means, a non-fluid material containing a liquid and a solid content is diluted with a diluting liquid to prepare a fluid material having uniform and good fluidity, and further required. If so, various device configurations can be adopted as long as they can be transferred to the measuring means.

For example, as an example of a suitable fluid sample preparation means, there is a case where it is referred to as a container (a preparation tank, a storage tank, a tank, a chamber, etc.) for containing a non-fluid substance and a diluent. ), Stirring means for stirring the contents contained in the container, for example, a rotary shaft having a stirring blade planted therein, a drive source such as a motor for rotationally driving the rotary shaft, and if necessary, a fluid material in the container. An apparatus configuration having a pump and a pipe for transferring the gas to other measuring means can be mentioned.

The outer diameter of the rotary shaft needs to be considered depending on the non-fluid material. For example, when a non-fluid material includes a long thin material such as a fibrous material or a string-like material, the outer diameter of the rotating shaft should be set to be larger than the length of the small thin material even if it is small. preferable. For example, when the non-fluid material is a dehydrated cake obtained by sewage treatment, even if the outer diameter of the rotating shaft is small in order to prevent entanglement of thin and long products such as fibers and hair contained in the dehydrated cake. 30mm is recommended.

As another example of other suitable fluid sample preparation means, the above-mentioned container for containing a non-fluid substance and a diluting liquid, and a circulation pipe for taking out the contents of this container to the outside of the container and returning it again into the container An example of the device configuration may include a passage, a circulation pump provided in the circulation pipe, and, if necessary, a pump and a pipe for transferring the fluid material in the container to another measuring means.

Further, this fluid sample preparing means is not limited to the above apparatus constitution as long as it can mix the non-fluid material and the diluting liquid to prepare a fluid material which is uniform and has good fluidity. A device conventionally called a stirrer, a mixer or a disperser can also be used. As such an apparatus, for example, a homogenizer, a barber, a static mixer and the like can be mentioned.

The operation of mixing the non-fluid substance and the diluting liquid in the fluid sample preparation means is controlled by the control means. Specifically, for example, the control means, for example, the stirring time by the stirring means and the required stirring power. The driving source, for example, the driving timing of the motor and its stopping timing, the driving timing of the pump for transferring the fluid material in the container to the other measuring means, and its stopping timing are controlled.

(5) Control means This control means controls the operation of collecting the non-fluid material, the operation of weighing the collected non-fluid material, and the flow of the weighed non-fluid material in the sampling and weighing means. The operation of transferring to the fluid sample preparing means, the operation of supplying a predetermined amount of the diluent in the diluent supplying means to the fluid sample preparing means, and the mixing of the diluent and the non-fluid material in the fluid sample preparing means. Various configurations can be adopted as long as the operation can be controlled, and for example, a computer in which software programmed to control the series of operations is installed can be preferably used.

(6) Calculation means This calculation means is based on the weight of the diluent supplied from the diluent supply means to the fluid sample preparation means and the weight of the non-fluid material weighed by the sampling and weighing means. Various configurations can be adopted as long as the dilution ratio of the non-fluid substance can be calculated, and for example, a computer installed with software programmed to have the calculation function is preferably adopted. You can The computer is provided with a memory for storing the weight of the diluting liquid, the weight of the non-fluid material and the calculation result.

(Specific Example) An example of the sampling apparatus of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a schematic explanatory view showing a sampling device which is an example of the present invention.

As shown in FIG. 1, this sampling device 1 has a sampling device 2A, a weighing device 2B, a fluid sample preparation device 3, a dilution water supply device 4, and a control calculation device 5. .

This sampling device 1 is used as a sample preparation device for measuring the water content of the dehydrated cake generated during sewage treatment. In the sewage treatment process,
The dehydrated cake obtained by the dehydration treatment is transported to the incineration treatment facility. Since this dehydrated cake contains water and does not have fluidity by itself, it corresponds to the non-fluid material in the present invention.

The sampling device 2A in this sampling device 1 has a hopper 6 and a third belt conveyor 7. In addition, the weighing device 2B is a weight measuring device 8
And a dehydrated cake transfer device 9. The sample collecting device 2A corresponds to the sample collecting device in this invention, and the weighing device 2B corresponds to the weighing device in this invention.

The hopper 6 has one end of a belt conveyor (referred to as a first belt conveyor, not shown in FIG. 1) for carrying the dehydrated cake and a second belt conveyor 10 arranged below the belt conveyor. And an opening 1 for receiving the dehydrated cake which is disposed between the first belt conveyor and the first belt conveyor and falls from one end of the first belt conveyor due to gravity.
And a discharge port 12 for discharging the dehydrated cake accommodated from No. 1. The hopper 6 takes out the dehydrated cake falling from the first belt conveyor from the dropping area, and is also a taking-out means for taking out non-fluid substances.

The third belt conveyor 7 is arranged so that one end thereof is located immediately below the discharge port of the hopper 6 and the other end is arranged so as to face the weight measuring device 8 described later.
The third belt conveyor 7 includes a driving wheel 13 and a driven wheel 1.
4 and a belt 15 wound around them, and a scraping blade 16 slidingly contacting the belt 15. This third belt conveyor 7 is normally rotated by the drive wheel 13 (rotational direction in which the dehydrated cake is rotated so as to be transferred to the weight measuring device 8 side).
And reversing is possible. When the third belt conveyor 7 rotates normally, for example, the dehydrated cake dropped on the belt 15 from the discharge port of the hopper 6 is transferred toward the weight measuring device 8. It is designed to be transferred to the belt conveyor 10. In addition, this second belt conveyor 1
0 conveys the dehydrated cake to an incinerator or the like.

The forward and reverse rotations of the third belt conveyor 7 are controlled by the control arithmetic unit 5 as follows.

That is, for example, when the drive wheel 13 is rotated in the normal direction by the control signal output from the control arithmetic unit 5, the dehydrated cake dropped from the discharge opening 11 of the hopper 6 is conveyed by the belt 15 of the third belt conveyor 7. Then, it moves to the weight measuring device 8. The dehydrated cakes are successively moved from the third belt conveyor 7 to the weight measuring device 8. The transferred dehydrated cake is measured with the weight measuring device 8 over time. The measured value is input from the weight measuring device 8 to the control calculation device 5 over time. When the weight of the dehydrated cake measured with time reaches a predetermined weight value, a control signal is output from the control arithmetic unit 5 and the drive wheels 13 start reverse rotation. Drive wheel 1
By the reverse rotation of 3, the transfer of the dehydrated cake to the weight measuring device 8 by the third belt conveyor 7 is stopped, and the dehydrated cake dropped on the belt 15 of the third belt conveyor 7 or the dehydrated cake that has been conveyed until then is transferred. Second belt conveyor 10
Will be transferred to.

The belt 15 of the third belt conveyor 7
Since the scraping blade 16 is slidably in contact with the blade, the dehydrated cake conveyed by the third belt conveyor 7 is scraped by the scraping blade 16, whereby all the dehydrated cake transferred by the reverse rotation is in the second position. Belt conveyor 1
The dewatered cake is prevented from sticking to the belt 15 of the third belt conveyor 7 which has been transported to the upper side of the third belt conveyor 7 and is reversed.

The third belt conveyer 7 transfers the dehydrated cake taken in by the hopper 6 to the weight measuring device 8 which is one element of the weighing means, and is therefore a transfer means for transferring the dehydrated cake.

The weight measuring device 8 is a mounting table 17 on which the dehydrated cake is mounted. (Since this mounting table stores and stores the dehydrated cake which is a non-fluid, it is also a mounting member.)
And a weight measuring unit for measuring the weight of the dehydrated cake placed on the placing table 17 and inputting the measured value to the control arithmetic unit 5 as an electric signal.

The weight measuring device 8 is arranged so that the mounting table 17 can receive the dehydrated cake conveyed by the third belt conveyor 7 and falling from the end thereof.

A long, endless sheet 18 having a width sufficient to cover the mounting table 17 is disposed on the mounting table 17. This sheet 18
Is formed of a synthetic resin that is insoluble in the below-described dilution water (corresponding to the dilution liquid in the present invention). This sheet 18 is formed in an endless form, in other words, endless, is rotated by a drive wheel 19 and a plurality of guide rollers 20, passes over the mounting table 17 described above, and is prepared in a preparation tank described later in the fluidity sample adjusting device. It can be circulated and moved along a course in which it is once drawn into the inside 21 and then drawn out from the preparation tank 21 and returns to the original mounting table 17.

Such circular movement of the seat 18 is achieved by the drive wheels 19 driven by the control signal output from the control arithmetic unit 5. It should be noted that the sheet 18 does not cyclically move from beginning to end, but cyclically moves as necessary in accordance with a control signal output from the control arithmetic unit 5, and stops the cyclic movement as necessary.

The sheet 18 prevents the dehydrated cake from sticking to the mounting table 17 when the dehydrated cake is directly mounted on the mounting table 17.

The dehydrated cake transfer device 9 including the sheet 18 and the drive wheel 19 and the guide roller 20 for circulatingly moving the sheet 18 prepares a fluid sample for the dehydrated cake whose weight is measured by the weight measuring device 8. Since it is transferred to the apparatus 3, it corresponds to the weighing sample transfer means described in the above general description.

The dehydration cake transfer device 9 has a drying device (not shown) arranged facing the sheet in order to dry the sheet to which the cleaning water sprayed from the cleaning water spraying nozzle described later adheres. It is provided.

In this specific example, the weighing means is composed of the dehydrated cake transfer device 9 and the weight measuring device 8.

The fluid sample preparation device 3 comprises a preparation tank 21 having a predetermined internal volume, a rotary shaft 22 with blades arranged in the preparation tank 21 and rotationally driven by a drive motor M, and the preparation tank. One end is coupled to a discharge port provided at the bottom of 21, and a pump P and a three-way switching valve 23 are interposed in the middle, and the other end is branched by the three-way switching valve 23 and the other end is, for example, an automatic infrared heating dry moisture meter The name "Cricket Auto", manufactured by Kurita Water Industries, Ltd.), and the three-way switching valve 2
3 and a pipe 24 extending from the other end and drawn into the preparation tank 21 at the other end.

By operating this three-way switching valve 23, the automatic infrared heating and drying moisture meter side is closed, the pump P side and the pipe having the other end facing the preparation tank 21 are brought into communication with each other, and the pump P is driven. Then, the dilution water and the dehydrated cake in the preparation tank 21 circulate through the pump P and the pipe 24, and moreover, the dehydrated cake is crushed by the pump P, and the diluted water and the crushed dehydrated cake are good. The action of returning to the preparation tank 21 as a fluid substance works. Therefore, the preparation tank 21, the pipe 24, and the pump P can also serve as the fluid sample preparation means in the present invention.

In the preparation tank 21, the dehydrated cake transferred by the dehydrated cake transfer device 9 and the cleaning water supplied from the dilution water supply device 4 are stirred and mixed by the bladed rotary shaft 22, Since a diluted fluid material having good fluidity is formed, the fluid sample preparation means in the present invention can be formed by the preparation tank 21 and the blade thrust rotary shaft 22.

The rotation and stop of the drive motor M are controlled by a control signal output from the control arithmetic unit 5.

In the fluid sample preparation device 3, as described above, the sheet 1 is placed in the preparation tank 21 at a position where it is not immersed in the dilution water stored in the preparation tank 21.
8 is drawn in and out.
Then, a cleaning water spray nozzle 25, which can spray the same water as the dilution water as cleaning water on the surface of the sheet 18 drawn into the preparation tank 21, is arranged facing the surface of the sheet 18. The cleaning water spray nozzle 25 is connected to a dilution water supply device 4 described later by a pipe 26,
The dilution water stored in the dilution water supply device 4 is sprinkled. Therefore, in this sampling device 1, the washing device for washing the dewatered cake stacked or attached on the surface of the sheet 18 with the washing water and dropping it into the preparation tank 21 has the washing water spray nozzle 25 and the pipe 26. Configured.

The spraying of the cleaning water from the cleaning water spraying nozzle 25 is executed by opening and closing the second opening / closing valve 27 provided in the middle of the pipe 26, and the second opening / closing valve 2
The open / close drive of 7 is controlled by a control signal output from the control arithmetic unit 5.

The dilution water supply device 4 corresponds to the dilution liquid supply means in this invention. This dilution water supply device 4
Is a dilution water storage tank 29 having an overflow port 28 at the top, a liquid level gauge (not shown) for detecting the liquid level of the dilution water stored in the dilution water storage tank 29, and the dilution water. One end is connected to the bottom surface of the storage tank 29, and a pipe 31 having a third opening / closing valve 30 in the middle and a second end arranged so as to face the preparation tank 21 is provided.

When the liquid level gauge detects that the liquid level has reached a predetermined level, that is, the overflow port of the dilution water storage tank 29, the detection signal is input to the control arithmetic unit 5.

In the sampling device 1 of this specific example, a liquid level gauge is used as means for detecting that the dilution water has reached the overflow port 28 of the dilution water storage tank 29.
As long as it has a means for detecting that a predetermined amount of dilution water is stored in the dilution water storage tank 29, various means can be adopted without being limited to the liquid level gauge. For example, instead of the liquid level gauge, It may be means for detecting that the dilution water overflowing from the overflow port 28 flows into the drain device.

In FIG. 1, D indicates the overflow port 28.
It is a drain pipe that discharges the diluted water that overflows from.

In the middle of the pipe 31, a fourth opening / closing valve 33 is connected to the dilution water tank 32 in order to supply the dilution water from the dilution water tank 32 which is a dilution liquid source to the dilution water storage tank 29. Is connected to the cleaning water spray nozzle 25 to supply dilution water to the cleaning water spray nozzle 25 in the cleaning device.
A pipe 26 having a second opening / closing valve 27 is connected. Further, a pump (not shown) for pumping the dilution water is interposed in the middle of the pipe 34 connected to the dilution water tank 32. The excess dilution water overflowing from the overflow port 28 is discharged through the drain pipe D.

These first to fourth on-off valves 23, 2
The opening and closing operations of 7, 30, 33, the driving operation and stopping operation of the pump in the middle of the pipe 34 connected to the dilution water tank 32, and the driving operation and the stopping operation of the pump P interposed in the middle of the pipe 24 are It is controlled by a control signal output from the control arithmetic unit 5.

The control / calculation device 5 controls the operation of each part in the sampling device 1 and calculates the dilution rate (or concentration) of the fluid substance prepared by the fluid sample preparation device 3 and obtained. Is. Therefore, the control arithmetic unit 5 corresponds to a unit having both the control means and the arithmetic means in the present invention.

The control arithmetic unit 5 is an output display unit such as a computer, a keyboard and a CRT screen in which program software for enabling the automatic operation of the sampling unit 1 and arithmetic program software for calculating the dilution rate (or concentration) are installed. Is configured.

The above program software is assembled so as to enable the operation and calculation of the sampling device 1 described below.

The sampling device 1 operates as follows. In this embodiment, in order to incinerate the dehydrated cake obtained by normally treating the sewage, the dehydrated cake drops from the end portion of the first belt 15 conveyor to the second belt conveyor 10 below the conveyor. Then, the dehydrated cake is conveyed to the incineration facility by the second belt conveyor 10. A part of the dehydrated cake falling from the first belt conveyor (not shown) has an opening 11 of the hopper 6.
Is taken into the inside of the hopper 6 from the hopper 6, and falls from the discharge port 12 of the hopper 6 onto the belt 15 of the third belt conveyor 7, but the drive wheels 13 of the third belt conveyor 7 are output from the control arithmetic unit 5. Since it is driven in the reverse direction by the control signal, the belt 15 of the third belt conveyor 7
The dehydrated cake that has dropped onto the second belt conveyor 10 is transferred.

Now, when it becomes necessary to measure the water content of the dehydrated cake with an automatic infrared heating and drying moisture meter, the key board in the control arithmetic unit 5 is operated to output a control signal,
The drive wheels 13 of the third belt conveyor 7 are normally rotated. When the drive wheels 13 start to rotate normally, the third belt conveyor 7
The dewatered cake falling on the belt 15 is conveyed toward the weight measuring device 8 by the third belt conveyor 7.

On the other hand, the mounting table 17 in the weight measuring device 8
The sheet 18 arranged so as to cover the sheet is in a state where it has not yet been circulated by the control signal output from the control arithmetic unit 5.

The dehydrated cake conveyed by the third belt conveyor 7 drops from the end of the third belt conveyor 7 toward the mounting table 17. Since the mounting table 17 is covered with the sheet 18, the dehydrated cake falls on the sheet 18 covering the mounting table 17. Dehydrated cakes conveyed by the third belt conveyor 7 are successively stacked on the sheet 18.

The weight measuring device 8 measures the weight of the dehydrated cakes with time as the dehydrated cakes are stacked on the sheet 18 on the mounting table 17, and the obtained measured value is controlled as an electric signal. It is input to the device 5.

The control arithmetic unit 5 samples the input electric signal indicating the measured value at regular intervals,
The sampled data is temporarily stored in the memory.
In the control arithmetic unit 5, the data once stored in the memory is read out, and a predetermined threshold value for the weight of the dehydrated cake is read out from the memory.
A calculation process for comparing the measured value, which is data, with the threshold value is performed. The control arithmetic unit 5 further determines whether or not the obtained arithmetic value is within a predetermined allowable range.

When the control arithmetic unit 5 determines that the obtained arithmetic value is within a predetermined allowable range, the measured weight value at that time is stored in the memory and the control arithmetic unit 5 sends a control signal to the third belt. It is output to the drive wheels 13 of the conveyor 7. The drive wheel 13 starts reverse rotation in response to the control signal. Third
When the drive wheels 13 of the belt conveyor 7 of FIG. 2 are reversed, the dehydrated cake that has been conveyed by the third belt conveyor 7 and the dehydrated cake that has dropped onto the third belt conveyor 7 are directed toward the second belt conveyor 10. Be transferred.

When the control arithmetic unit 5 determines that the obtained arithmetic value is within a predetermined allowable range, the control arithmetic unit 5
Outputs a control signal to the dehydrated cake transfer device 9 to drive the drive wheels 13 in the dehydrated cake transfer device 9. The dehydrated cakes stacked on the sheet 18 on the mounting table 17 by the drive of the drive wheels 13 are conveyed toward the preparation tank 21 as the sheet 18 moves.

On the other hand, before the dehydrated cake is conveyed to the preparation tank 21, a control signal is output from the control arithmetic unit 5 to the fourth opening / closing valve 33, and the dilution water tank 32 and the dilution water storage tank 29 are connected. Are connected by the pipe 34. Then, the control arithmetic unit 5 outputs a control signal to a pump (not shown) to drive the pump, and the diluted water is delivered from the diluted water tank 32 to the diluted water storage tank 29. The dilution water to be delivered is introduced into the dilution water storage tank 29, and the liquid level of the dilution water rises as the dilution water is introduced.
Finally, it begins to overflow from the overflow port 28. When the liquid level of the diluted water reaches the overflow port 28, a liquid level gauge (not shown) detects that the liquid level of the diluted water reaches the overflow port 28, and the detection signal is sent to the control arithmetic unit 5. Is entered. When the detection signal is input, the control arithmetic unit 5 outputs to this pump a control signal for stopping the driving of the pump interposed in the middle of the pipe 34 connected to the dilution water tank 32, and also the pipe 34. The fourth open / close valve 33 is closed by also outputting a control signal to the fourth open / close valve 33 provided in the middle of.

Then, the control arithmetic unit 5 sends the control signal to the third signal.
By outputting to the opening / closing valve 30, the dilution water storage tank 2
Most of the dilution water stored in 9 is transferred into the preparation tank 21 through the pipe 31. At this time, the three-way switching valve 23, the second opening / closing valve 27, and the fourth opening / closing valve 33 are in the closed state according to the control signal output from the control arithmetic unit 5.

When a predetermined amount of dilution water is transferred into the preparation tank 21, the third opening / closing valve 30 closes the pipe 31 in response to the control signal output from the control arithmetic unit 5. Therefore, a predetermined amount of dilution water remains inside the dilution water storage tank 29. The above operation is executed before the transfer of the dehydrated cake on the sheet 18 of the dehydrated cake transfer device 9 to the preparation tank 21 is started.

When the dilution water is stored in the preparation tank 21, the dehydrated cake is conveyed to the preparation tank 21 by the movement of the sheet 18, and the sheet 18 is drawn into the preparation tank 21 so that the sheet 18 is removed. The dehydrated cake is put into the diluted water in the preparation tank 21. At this time, a control signal is output from the control arithmetic unit 5 to the second opening / closing valve 27,
As a result, the second opening / closing valve 27 is opened,
The washing water flows from the diluting water storage tank 29 to the washing water sprinkling nozzle 25, and the diluting water serves as washing water from the washing water sprinkling nozzle 25 toward the surface of the sheet 18 on which the dehydrated cake has been placed. It is scattered. The dilution water sprinkled on the surface of the sheet 18 rinses off the dewatered cake adhering to the surface of the sheet 18, and falls into the preparation tank 21.

All of the diluting water remaining in the diluting water storage tank 29 may be used for this washing, or a part of the diluting water remaining in the diluting water storage tank 29 may be used for this washing. May be used.

When a part of the dilution water remaining in the dilution water storage tank 29 is used for this cleaning, a predetermined amount of the dilution water remaining in the dilution water storage tank 29 is used for the cleaning. Then, the control arithmetic unit 5 outputs a control signal to the second opening / closing valve 27 to close the second opening / closing valve 27, and the control arithmetic unit 5 outputs a control signal to the third opening / closing valve 30 to generate the third signal. The open / close valve 30 is opened, and all the dilution water remaining in the dilution water storage tank 29 is supplied into the preparation tank 21. All of the dilution water in the dilution water storage tank 29 is the preparation tank 21.
When supplied inside, the third opening / closing valve 30 closes the pipe 31.

In this embodiment, the diluting water is filled in the preparation tank 21 before the dehydration cake is put into the preparation tank 21, and the dehydration cake is put into the preparation tank 21 from the sheet 18 and then the dilution water storage tank 29. Although the dilution water in the inside is used as the washing water to spray the dilution water on the surface of the sheet 18 through the washing water spray nozzle 25, a part of the predetermined amount of the diluted water in the dilution water storage tank 29 is used. The dehydrated cake on the sheet 18 is washed off into the preparation tank 21, and the dilution water storage tank 2
A tank 21 for preparing a dehydrated cake in a predetermined amount, for example, the total amount in 9
The procedure is not limited to the one described above as long as it can be dispersed within. For example, when the preparation tank 21 is left empty and the dehydrated cake is conveyed into the preparation tank 21, the dehydrated cake is rinsed into the preparation tank 21 with the dilution water in the dilution water storage tank 29, and then diluted water is added. All of the dilution water remaining in the storage tank may be transferred into the preparation tank 21.

The drive motor M is driven by the control signal output from the control arithmetic unit 5, and the dehydrated cake and the diluting water in the preparation tank 21 are agitated and mixed by the rotary shaft 22 with blades, and the fluidity is excellent. A fluid is obtained.

At the same time as the dehydrated cake and the diluting water are stirred and mixed in the preparation tank 21 by the impeller rotating shaft 22, the control signal output from the control arithmetic unit 5 causes the three-way switching valve 23 to be in the automatic infrared ray state. The inside of the preparation tank 21 is closed by closing the heating and drying moisture meter side and connecting the pipe 24 to the pump P side and the other end facing the preparation tank 21 so that the pump P is driven under such a state. The mixture of the dehydrated cake and the diluting water may be circulated from the outlet at the bottom of the preparation tank 21 to the preparation tank 21 through the pipe 24 again. By the circulation through the pipe 24, the mixed state of the dehydrated cake and the diluting water is improved, and moreover, favorable formation of a fluid is achieved in a short time.

By the above operation, the dehydrated cake measured by the weight measuring device 8 and all the dilution water stored in the dilution water storage tank 29 are put into the preparation tank 21. Since the volume in the diluting water storage tank 29 is known and the specific gravity of the diluting water is also known, it is prepared in the preparing tank 21 from the weight of the diluting water put in the preparing tank 21 and the weight of the dehydrated cake put therein. The control computing device 5 calculates the dilution rate or concentration of the fluid.

The calculated density is displayed on the output display device in the control calculation device 5. Further, from the control arithmetic unit 5 to the automatic infrared heating and drying moisture meter, the concentration of the fluid prepared in the preparation tank 21 and the sheet 18 put in the preparation tank 21 are measured.
The measured weight value of the above dehydrated cake and the weight of the diluting liquid charged in the preparation tank 21 are output as data,
These data are stored in the memory of the automatic infrared heating and drying moisture meter.

When the fluid, that is, the fluid sample is prepared in the preparation tank 21 as described above, the control arithmetic unit 5 outputs a control signal to the three-way switching valve 23 to switch the automatic infrared heating and drying moisture meter to the three-way side. Switch the valve 23,
In addition, when the pump P that receives the control signal is driven,
The fluid sample in the preparation tank 21 is sent through the pipe 24 to the sampling device of the automatic infrared heating and drying moisture meter.

In the automatic infrared heating / drying moisture meter, the sent fluid material is evaporated to dryness to obtain the total weight of solids, and the water content in the dehydrated cake is calculated by the following formula. .

Moisture content (%) in dehydrated cake = 100-concentration of total solids in dehydrated cake = 100-{[concentration of fluidity product * (weight measurement value of dehydrated cake-weight of diluent) / dehydrated cake In this way, in this sampling device 1, the hopper 6 is arranged in the area where the dehydrated cake is distributed, and the combination of the hopper 6 and the third belt conveyor 7 allows Since the dehydrated cake can be taken out to the non-circulated area as needed, the dehydrated cake is not collected manually as in the conventional case. Therefore, it is possible to solve various problems caused by manually collecting the dehydrated cake.

Further, since the sampled dehydrated cake is automatically measured by the weight measuring device 8, problems such as complexity and inaccuracy caused by manually weighing the dehydrated cake are eliminated. Moreover, in this sampling device 1, since the surface of the mounting table 17 in the weight measuring device 8 is covered with the sheet, the weight measuring device 8 is contaminated with the dehydrated cake or the dehydrated cake sticks to the mounting table 17. Inconvenience is also eliminated. Since the sheet moves while the dehydrated cake is placed and the dehydrated cake is put into the preparation tank 21, it is complicated to carry the dehydrated cake after weighing manually and to put it into the preparation tank 21 manually. Also, there is an advantage that there is no accident such as loss of the dehydrated cake during the manual transportation.

In the preparation tank 21, the predetermined weight or volume of the dilution water and the dehydrated cake are mixed by an automatic operation, so that the fluid substance diluted at an accurate dilution rate or a concentration is obtained. Is prepared.

Therefore, this sampling apparatus 1 is
Without requiring human labor, without causing complexity by manual work, it is possible to automatically prepare a fluid substance having a predetermined dilution rate or concentration from dehydrated cake and dilution water,
It is possible to prepare a sample convenient for loading or supplying to an apparatus for measuring properties such as water content, for example, an automatic infrared heating and drying moisture meter.

[0115]

According to the present invention, a non-fluid material is automatically and diluted with a fluid material in a short time, and therefore, there is no inconvenience such as complexity and uncertainty due to manual work, and the dilution thereof is performed. A rate recognizable sampling device can be provided. According to the present invention, it is possible to provide a sampling device which can automatically prepare a non-fluid substance into a fluid substance and can calculate the dilution rate thereof automatically. According to the present invention, it is possible to provide a sampling device capable of diluting a dehydrated cake to prepare a sample having fluidity and further calculating the dilution rate automatically.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a sampling device which is a specific example of the present invention.

[Explanation of symbols]

1 ... Sampling device, 2 ... Sampling and weighing device, 3 ... Fluid sample preparation device, 4 ... Diluting water supply device, 5 ... Control arithmetic device, 6 ... Hopper, 7・
..Third belt conveyor, 8 ... Weight measuring device, 9
... Dehydration cake transfer device, 10 ... Second belt conveyor, 11 ... Opening part, 12 ... Discharge port, 13 ...
..Drive wheels, 14 ... driven wheels, 15 ... belts, 1
6 ... scraping blade, 17 ... mounting table, 18 ・
..Seats, 19 ... Drive wheels, 20 ... Guide rollers,
21 ... Preparation tank, 22 ... Rotating shaft with blades, 2
3 ... First opening / closing valve, P ... Pump, 24 ...
Piping, M ... Drive motor, 25 ... Washing water spray nozzle, 26 ... Piping, 27 ... Second opening / closing valve, 28
... overflow port, 29 ... dilution water storage tank, 30 ... third opening / closing valve, 31 ... piping, D ... drain tube,
32 ... Diluting water tank, 33 ... Fourth opening / closing valve,
34 ... Piping.

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yasuto Futakoishi 3-43-2, Ebisu, Shibuya-ku, Tokyo Nikkiso Co., Ltd.

Claims (3)

[Claims] 1. A sampling means for collecting a non-fluid material containing a liquid, a weighing means for weighing a sample of the non-fluid material collected by the sampling means, and a dilution for supplying a predetermined amount of diluent. Liquid supplying means, fluid sample preparing means for mixing the sample weighed by the weighing means and the diluent supplied from the diluting liquid supplying means to obtain a fluid sample, and sample collecting operation in the sample collecting means A weighing operation in the weighing means, an operation in the diluent supply means for supplying a predetermined amount of the diluent to the fluid sample preparing means, and a sample weighed by the weighing means in the fluid sample preparing means and the And a control unit that controls an operation of mixing the diluent supplied from the diluent supply unit. 2. A sampling means for collecting a non-fluid material containing a liquid, a weighing means for weighing a sample of the non-fluid material collected by the sampling means, and a dilution for supplying a predetermined amount of diluent. Liquid supplying means, fluid sample preparing means for mixing the sample weighed by the weighing means and the diluent supplied from the diluting liquid supplying means to obtain a fluid sample, and sample collecting operation in the sample collecting means A weighing operation in the weighing means, an operation in the diluent supply means for supplying a predetermined amount of the diluent to the fluid sample preparing means, and a sample weighed by the weighing means in the fluid sample preparing means and the Control means for controlling the operation of mixing the diluent supplied from the diluent supply means, the weight of the diluent supplied from the diluent supply means to the fluid sample preparing means, and the weighing means. A sampling device for calculating the dilution rate of the non-fluid material from the measured weight of the non-fluid material. 3. The sampling device according to claim 1, wherein the non-fluid material is a dehydrated cake or a non-fluid sludge slurry.