JPH102845A - Sampling device for nonfluidic matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically fluidize a nonfluidic sample by collecting the nonfluidic sample containing a liquid, mixing a part of a diluting solution to prepare a diluted sample, measuring the weight, and mixing the remaining diluting solution to prepare a fluidic sample. SOLUTION: Diluting water is force-fed from a diluting solution tank 4 to a diluting solution storage tank 3 by a force feed pump to store a water quantity Wa, a part of the diluting water is supplied to a dilution tank 6 through a piping p3. The empty weight of the dilution vessel 6 and the supplied diluting water quantity are measured by a measuring means D and stored in an arithmetic means G. A three-way opening and closing valve V0 is then operated to supply a dehydrated cake having a weight Wc to the dilution vessel 6 through a sampling passage L3. The content of the diluting vessel 6 is stirred by a stirring means 7 to prepare a diluted sample, which is then supplied to a preparation vessel 8 through an opening part 6a together with the diluting water left in the storage tank 3. The content of the preparation tank 8 is stirred by a stirring means 9 to prepare a fluidic sample. The arithmetic means G can determine the water content of the dehydrated cake from the known water quantity Wa and weight Wc and the water content of another measurable fluidic sample.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sampling a non-flowable substance, and more particularly, to a method for automatically diluting a non-flowable substance containing a liquid to prepare a sample of a flowable substance. At the same time, the present invention relates to a non-fluid material sampling device capable of automatically calculating the water content of the non-fluid material.

[0002]

2. Description of the Related Art Understanding the water content or sludge concentration of a sludge slurry or a dewatered cake thereof is an important management item in the technical field of wastewater treatment. One of the importance is explained below. For example, at the time of sewage treatment, a dewatered cake is formed from the sewage through processing steps such as precipitation treatment, aeration treatment, biological treatment, chemical treatment, and coagulation dehydration treatment, and finally, the dewatered cake is incinerated. Is being done.

[0003] At that time, if the water content in the dewatered cake is large, the fuel cost during incineration increases. In order to reduce the fuel cost at this time, the water content in the dewatered cake may be reduced. However, in order to reduce the water content, a new problem arises in that the operation cost required for the treatment process until the coagulation dehydration treatment is completed increases.

For this reason, in wastewater treatment such as sewage treatment, the total cost of the fuel cost required for the incineration of the dewatered cake and the operating cost required for the preceding treatment process up to the incineration is the minimum cost. Thus, it is required to select the water content of the dewatered cake. Therefore, for the dewatered cake obtained after the coagulation dehydration treatment, it is necessary to grasp the water content or the sludge concentration, and to compare the value with the above-mentioned economic water content selection value. . If there is a deviation between these values, measures such as appropriately changing the operating conditions in each of the above-described processing steps are performed so as to eliminate the deviation.

[0005] Meanwhile, the concentration of the sludge slurry and the water content of the dewatered cake, which are important management items at the time of wastewater treatment, have conventionally been manually grasped. That is, after the coagulation and dehydration treatment is completed, for example, the operator manually collects a predetermined amount of the dewatered cake transferred to a predetermined place, and weighs the collected sample using, for example, a balance. Next, the weighed sample is loaded into a drier and dried. After a drying process for a predetermined time, the dried sample is weighed. Then, the water content or the water content in the sample is calculated from the sample weight before and after the drying process.

Recently, as a method of quickly measuring the moisture content of a sample, a method of drying a sample with infrared rays (see Japanese Patent Publication No. 6-19317 and Japanese Patent Publication No. 5-48412) has been proposed. As a commercially available device using this method, an automatic infrared heating and drying moisture meter (trade name “Cricket Auto”, manufactured by Kurita Kogyo Co., Ltd.) is also provided.

In this automatic infrared heating and drying moisture meter, a sample dish supply section, a measurement section and a sample collection section are provided along a sample dish moving mechanism horizontally arranged in a box. In the sample dish supply section, the aluminum sheet fed from the aluminum sheet supply roll is cut by a cut press device,
Next, the sample plate is formed by press-forming the cut aluminum sheet piece. This sample dish is transferred to the sample collection unit by the sample dish moving mechanism. In the sample collection section, a predetermined amount of sample is collected from the flow of the sample flowing in the pipe, and the sample is received in a sample dish. Thereafter, the sample dish is transferred to the measuring section, and is heated and dried by an infrared drying device arranged above the load measuring device in the measuring section, and the weight before drying, that is, the total weight of the sample dish and the sample before drying, is measured by the load measuring apparatus. and W _1, the weight i.e. sample pan dried and the total weight W ₂ of the dried sample is measured. The water content of the sample is determined as the difference between the sample weight before and after drying, that is, W ₁ -W ₂ .

[0008] In the case of the above-mentioned automatic infrared heating and drying moisture meter, when the sample is fluid, its moisture content can be determined. However, when the sample is a non-flowable substance, the water content of the sample cannot be directly determined. Therefore, when determining the moisture content of a non-fluid substance using this automatic infrared heating and drying moisture meter, the target sample is diluted with a desired liquid to prepare a fluid substance having a predetermined dilution rate, and the fluidity is measured. A method of measuring the water content of a liquid substance with the automatic infrared heating and drying moisture meter and calculating the water content of the non-fluid substance from the value is adopted.

However, even in such a case, it is inconvenient as a sampling operation in that a non-flowable substance to be measured must be manually prepared into a flowable substance, and an erroneous operation may be performed. there were. In addition to the measurement of the water content using the above-described automatic infrared heating and drying moisture meter, a sample of a non-fluid material is once prepared into a fluid material, and then the characteristics of the fluid material sample, such as conductivity, The component concentration, viscosity, shear force, absorbance, pH value, etc. may be measured. Even in that case, it is very complicated and troublesome to manually perform the operation of preparing a non-flowable substance into a flowable substance.

[0010]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problem at the time of sampling a non-flowable substance, and automatically dilutes the non-flowable substance to prepare a flowable substance. It is an object of the present invention to provide a non-fluid sampling device capable of automatically recognizing and calculating a dilution ratio.
In particular, it is an object of the present invention to provide a sampling device that is suitable when the target non-fluid is a dewatered cake or a non-fluid sludge slurry.

[0011]

In order to achieve the above-mentioned object, the present invention provides, in the present invention, a sampling means for collecting a sample of a liquid-containing non-flowable substance, and a diluting means for supplying a predetermined amount of a diluting liquid. A liquid supply unit having an opening provided with an on-off valve at a lower portion, and mixing the sample supplied from the sample collection unit with a part of the diluent supplied from the diluent supply unit to dilute the sample; A sample diluting unit to be prepared, a weighing unit disposed on the sample diluting unit, weighing the weight of the sample diluting unit and the contents thereof, and a diluted sample supplied from the sample diluting unit and the diluting liquid supplying unit. Fluid sample preparation means for preparing a fluid sample by mixing with the remaining diluent to be supplied, and a sampling operation, a diluent supply operation, a dilute sample preparation operation, a weighing operation of the weighing means, and a diluted sample. Supply operation and fluidity test Sampling apparatus for non-flowable material is provided and a control means for controlling the preparation operation.

In the present invention, in addition to the above-described means, the total weight of the diluent supplied to the flowable sample preparation means and the weight of the non-fluid substance weighed by the weighing means are further determined. An apparatus for sampling a non-fluid material is provided which includes a calculating means for calculating the water content of the non-fluid material from the total weight.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A sampling device according to the present invention will be described below with reference to FIG. First, the non-fluid material sampled by this device is a material that contains a liquid and does not have ordinary fluidity by itself. For example, in the industrial fields such as the food industry, the chemical industry, and the pharmaceutical industry, In addition to various non-fluids to be treated, there are various kneaded materials and admixtures, and non-fluid sludge slurries and dewatered cakes formed during sewage treatment.

This apparatus comprises a sample collecting means A, a diluting liquid supplying means B, a sample diluting means C, a weighing means D, a fluid sample preparing means E, a control means F, and a calculating means G. Have been. Note that the control means F and the calculation means G may be configured as control / calculation means by integrating them without being separately provided as shown in the figure. Sampling means A
Is a means for collecting a target non-fluid substance and supplying it to the sample diluting means C.

The non-fluid matter collected by the means A may be in a state of being stored, or may be in a state of being transferred from a predetermined location to another location. Means for collecting the non-fluid in the former state include, for example, a cup, a shovel, a spatula, and a plurality of claws. The claws pierce, scoop, or grip the non-fluid. Such as a fork that can be
A sampling member operated by a control signal from the control means F, and a movement which can move the sampling member between the non-fluid storage area and the sample dilution means C by the control signal of the control means F. It can be configured with a member.

As means for collecting the non-fluid material in the latter state, a desired amount of the non-fluid material being transferred is transferred from the inside of the transfer area to the outside of the transfer area by a control signal from the control means F. It can be constituted by a take-out means and a transport means for supplying the taken-out sample to the sample diluting means C. In the following description, a dehydrated cake formed at the time of sewage treatment of a target non-fluid substance will be described as an example.

The sample collecting means A shown in FIG. 1 is an example of a means for collecting a non-flowable substance during transfer. In the case of this means A, for example, a screw conveyor is incorporated, and one end is cake sampling. the cake supply path L ₁ which is connected to the pump 1, a built-in also for example screw conveyor, end the cake discarded path L ₂ extending until cake waste container 2, the cake supply path L ₁ and the is composed of a three-way switch valve V _0, for example a three-way electrically operated valve connecting the cake discarded path L _2, the three-way switch valve V ₀ is made to allow the opening and closing operation by a control signal s ₀ from the control unit F ing.

In this means A, if the three-way on-off valve V ₀ is operated by the control signal s ₀ from the control means F to connect the cake supply path L ₁ and the cake waste path L ₂ , the dewatered cake can be The cake is supplied to the cake supply path L ₁ → the three-way on-off valve V ₀ → the cake disposal path L ₃ , and is continuously discarded in the cake disposal container 2. In sampling, by cake discarded path L ₂ operates the three-way switch valve V ₀ so that the closed control signals s _0, dehydrated cake has been transferred to the cake supply path L ₁ is a three-way switch valve V its desired value from sampling path L ₃ through ₀ is supplied to the sample dilution means C.

Next, the diluent supply means B is a means for supplying a diluent to a sample diluting means C and a fluid sample preparing means E, which will be described later. Means for supplying the diluting liquid so that the amount of the diluting liquid supplied thereto becomes a predetermined constant value. The diluent supply means B includes a pipe provided to supply the diluent to each of the sample diluting means C and the fluid sample preparation means E, and a diluent storage which is connected to these pipes and stores the diluent. A tank, a liquid level gauge provided in the diluent storage tank and the fluid sample preparation means E, and a diluent based on a control signal from the control means F when the level gauge detects a predetermined height of the liquid level. For example, a valve provided in a pipe or a supply stopping means such as a diluting liquid pump may be used in combination.

Further, as another diluting liquid supplying means, for example, an overflowing means for overflowing the diluting liquid stored in the diluting liquid storage tank connected to the pipe when the stored diluting liquid reaches a predetermined value. May be provided, and the piping may be provided with an opening / closing valve for performing an opening / closing operation by a control signal from the control means F. Also in this case, finally, only a certain amount of diluent can be supplied to the fluid sample preparation means E.

At this time, the internal volume of the diluent storage tank is finally adjusted to a desired fluid sample for specific measurement by diluting the non-fluid sample with the diluent in the fluid sample preparation means. If the volume of the diluent is the same as that required to achieve the target dilution rate at the time of the dilution, the upper opening provided in the diluent storage tank can be used as the overflow means. In other words, when the diluent is supplied from a diluent source, for example, water, into the diluent storage tank, and when the diluent overflows from the upper opening, the supply of the diluent from the diluent, for example, water, is stopped. At this stage, a state is realized in which a predetermined volume of the diluent can be supplied from the diluent storage tank to the sample diluting unit C and the fluid sample preparing unit E as a whole. 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 a plurality of 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 discharge port, and the sample dilution means The supply amount of the diluent supplied to C or the fluid sample preparation means E can also be determined.

The diluent used is usually of the same type as the liquid contained in the non-fluid, but depending on the purpose of the sampling device of the present invention, the type of the diluent may be non-fluid. It may be different from the liquid contained therein. In general, water (whether to use tap water, ion-exchanged water, pure water, or the like is used as the diluting liquid is determined according to the purpose or use of the sampling device), and an aqueous solution (reagent or reagent). An aqueous solution containing a dispersant or the like can be used.) An organic solvent such as an alcohol or an organic solvent solution (a solution obtained by dissolving a reagent, a dispersant, or the like in an organic solvent can be used) is used. it can.

In the case of the sampling device of the present invention,
When used as a sample preparation device for measuring the water content of a dewatered cake or a non-fluid sludge slurry formed by sewage treatment or the like, it is preferable to use water as a diluent. The diluent supply means B shown in FIG. 1 is a case where the diluent storage tank 3 includes the overflow means described above.

In this means B, the diluent storage tank 3
Is its internal volume is constant, is connected to the diluent tank 4 via the pipe p ₁ having an on-off valve V _1, such as an electromagnetic valve for opening and closing operation by the control signal s ₁ of the control unit F, also the upper opening An overflow port 3a is formed, and an upper portion including the overflow port 3a is sealed with a cover 3b having a drain pipe 5. The lower portion of the diluent storage tank 3 is connected to the pipe p ₂ having an opening and closing valve V _2, such as an electromagnetic valve for opening and closing operation by the control signal s ₂ of the control unit F.

The pipe p ₂ branches into two pipes p ₃ and p ₄ , and one pipe p ₃ is provided with an on-off valve V ₃ such as a solenoid valve which opens and closes according to a control signal s ₃ of the control means F. And its tip reaches the sample diluting means C. Also, other pipe p ₄ is provided with an opening and closing valve V ₄ such as an electromagnetic valve for opening and closing operation by the control signal s ₄ of the control unit F, the tip has reached the flowable sample preparation means E.

In this means B, first, the control means F
A control signal s _1, s _2, and the opening and closing valve V ₁ open, the on-off valve V ₂ while the closed, operating the example pressure pump provided in the pipe p ₁ (not shown). Diluent dilution tank 4 is gradually stored in the diluent storage tank 3 through the pipe p _1, overflowing from the overflow port 3a then filled with whole. The diluent overflowing into the cover 3b is discharged from the drain pipe 5 to the outside of the system.

After the diluent storage tank 3 is filled with the diluent,
Off valve V ₁ are closed by the control signal s _1, to open the on-off valve V ₂ in the control signal s _2. The on-off valve V in the control signal s ₃
For ₃ of the opening and closing operation, and the control signals by performing the opening and closing operation of the on-off valve V ₄ in s _4, the diluent from the pipe p ₃ to sample dilution means C, also flowable sample preparation means E from the pipe p ₄
, Or both.

Next, the sample diluting means C is
A sample of non-flowable material supplied from, by mixing and stirring the desired amount of diluting liquid supplied from the pipe p _3, it is a means to prepare the diluted sample. This means C, for example, the dilution tank 6 to the opening 6a is formed in the lower portion having an opening and closing valve V ₅ such as an electric valve, as stirring blade for stirring a uniform content in the dilution tank 6 And a stirring means 7. Here, the on-off valve V ₅ performs a switching operation by the control signal s ₅ of the control unit F, The stirring means 7 the control means F
For driving and stopping operation by the control signal s ₆ of.

In this means C, the control signal s of the control means F
Off valve V ₅ are closed by _5, and the control signal s _2, s
_3, s _4-off valve V ₂ opens the on-off valve V ₃ is also open, on-off valve V ₄ supplies a desired amount of the diluent from the pipe p ₃ while the closed to the dilution tank 6, further control signal s _After operating the three-way on-off valve V ₀ to supply a predetermined amount of sample from the sampling means A, the on-off valve V ₃ is closed, and the stirring means 7 is driven by the control signal s ₆ to mix the entire contents. Stir to prepare a diluted sample.

At this time, the amount of the diluting liquid supplied to the diluting tank 6 may be the total amount of a certain amount of diluting liquid stored in the diluting liquid storage tank 6, but is not necessarily the total amount. The mixing and stirring in the dilution tank 6 can be smoothly performed without the need for
It is sufficient that the amount is such that a viscous state can be realized such that the liquid can smoothly fall downward from the opening 6a.

The prepared diluted sample is supplied to the opening 6 of the dilution tank.
a to the fluid sample preparation means E described later. And at this time, although it depends on the viscosity of the diluted sample,
A part of the diluted sample may adhere to the inner wall of the dilution tank 6 or the stirring means 7 after the supply is completed. In this state, even if the flowable sample for the target property measurement is prepared by the flowable sample preparation means E, the obtained sample is not an accurate flowable substance of the sample collected by the sample collection means A.

Therefore, it is necessary to clean the dilution tank 6 and the stirring means 7 and to supply the diluted sample adhering thereto to the fluid sample preparation means E without fail. For this reason, in the sampling apparatus of the present invention, when preparing a diluted sample, a part of the predetermined amount of the diluent stored in the diluent storage tank 3 is used, and a part or all of the remaining diluent is used. The dilution tank 6 and the stirring means 7 are cleaned by using the above.

That is, the control signal s of the control means F_FiveBy
Tte opening and closing valve V_FiveThe diluted sample prepared by opening
a to the fluid sample preparation means E, and then the control signal s
_FiveOpening valve V again_FiveIs closed, and then the control signal
s_ThreeOpen / close valve V_ThreeTo the diluent storage tank 3
Part or all of the remaining diluent stored is in the pipe p. _Three
To the dilution tank 6 and the stirring means 7 to wash them.
It is done. Then, the control signal s_FiveOpen / close valve V_FiveOpen
Then, the above-mentioned washing liquid is supplied from the opening 6a to the fluid sample.
It is additionally supplied to the production means.

When a part of the diluent remaining in the diluent storage tank 6 is used at the time of the above-mentioned cleaning, when the diluent required for the cleaning is used, the control signal s ₃ opens and closes the open / close valve. V ₃ becomes closed, also the on-off valve V ₅ in the open wash fall flowable sample preparation unit E by a control signal s _5, at the same time, the on-off valve V ₄ by the control signal s ₄ is in the open, the total amount remaining of dilution of diluent storage tank 3 is supplied to the flowable sample preparation means E from the pipe p _4.

Thus, regardless of whether the amount of the diluent used for preparing and washing the diluted sample is a part of the predetermined amount of the diluent stored in the diluent storage tank 6 or the total amount thereof, More specifically, the amount of the diluent in the fluid sample preparing means E is a fixed amount of the diluent stored in the diluent storage tank 6, and the amount of the non-fluid sample present in the diluent is determined by the sampling means A. It is a predetermined amount at the time of sampling.

Next, the weighing means D is provided in the sample diluting means C, and weighs the weight of the non-fluid sample supplied from the sample collecting means A to the sample diluting means C. At the same time, the weight of the diluent supplied from the diluent supply means B is measured. Specifically, in FIG. 1, for example, a load cell is used as the weighing means D, and the dilution tank 6 is disposed on the load cell, so that the weighing means D is disposed on the sample diluting means C, and the weighing operation is performed. Can be realized.

At the time of sampling, the weighing means D is operated by the control signal s ₇ of the control means F, and first, the empty weight of the dilution tank 6 is weighed. Weigh the weight increase over time,
Further, when a sample of a non-fluid substance is supplied from the sampling means A, the weight increase at that time is weighed continuously.
Then, all of these results are successively input to the calculating means G as a weighing signal w, where the weight of the sample of the non-fluid material and the weight of the supplied diluent are sequentially calculated, and The value is stored.

The fluid sample preparing means E includes a sample diluting means C
Is a means for mixing and agitating the diluted sample supplied from the apparatus and the total amount (predetermined amount) of the diluent supplied from the diluent supply means B to prepare a target fluidity sample for characteristic measurement. This means E has one end connected to the preparation tank 8 and the bottom of the preparation tank 8 and the other end connected to a measurement system (not shown).
In the middle, a pipe p ₅ off valve V ₆ such as an electric valve is interposed, also uniformly mixed and the contents of the preparation vessel 8
And a stirring means 9 such as a stirring blade for stirring. Here, the on-off valve V ₆ performs opening and closing operations by the control signal s ₈ of the control unit F, also stirring means 9 for driving and stopping operation by the control signal s ₉ of the control unit F.

In this means E, first, the on-off valve V ₆ is closed by the control signal s ₈ , and then the diluted sample is supplied from the sample diluting means C to the preparation tank 8. All diluent remaining in B is supplied. As a result, the total amount of the sample collected by the sample collection unit A and the total amount of the diluent stored in the diluent supply unit B are:
It is stored in this preparation tank 8.

Next, the stirring means 9 is controlled by the control signal s ₉ .
Is driven to mix and stir the contents in the preparation tank 8 to prepare a target fluid sample. Thereafter, the control signal on-off valve V ₆ by s ₈ in the open, prepared flowable sample is transferred through the pipe p ₅ with pressure pump, not shown, is supplied to the measurement system desired. Control means F, as already described, actuates the three-way switch valve V ₀ controls the sampling operation of the sampling means A by the control signal s _0, the control signal s _1,
Opening / closing valves V ₁ , V ₂ , V ₃ , V according to s ₂ , s ₃ , s _4
4 is operated to control the supply operation of the diluent from the diluent supply means B to the sample dilution means C and the fluid sample preparation means E.

Further, the operation of the opening and closing valve V ₅ and the stirring means 7 and respectively controlled by control signals s _5, s _6, to prepare a diluted sample in the sample dilution means C. Then, the weighing means D is operated by the control signal s ₇ , the weight of the sample of the non-fluid substance supplied to the sample diluting means C and the weight of the diluent are weighed, and the result is input to the arithmetic means G. Further, control signals s ₈ ,
The operations of the opening / closing valve V ₆ and the stirring means 7 are controlled by s ₉ , respectively, and the fluid sample for the intended property measurement is prepared by the fluid sample preparing means E, and at the same time, it is transferred to a desired measurement system.

As the control means F for performing such a control operation, a computer in which a program enabling each of the above-described control operations is incorporated can be used. Further, a keyboard and an output display mechanism such as a CRT screen may be provided. The calculating means G calculates the sample weighing signal w transmitted from the weighing means D over time to grasp the sample weight,
Its weighing measured value, compare operation on the threshold of the sample weight stored in advance, when weighing the measured value is outside the allowable range of the threshold, the closed on-off valve V ₀ to the control means F The control signal s ₀ is transmitted. as a result,
This means that the sampling operation of the sampling unit A is stopped, and the sample is supplied to the sample dilution unit C within the allowable range of the threshold value.

Since the weight of the diluent supplied from the diluent supply means B to the fluid sample preparation means E is a constant value, by storing this value in the arithmetic means G, By operating this sampling device, the moisture content of the sample of the non-fluid substance can be produced. It is described below. Now, consider the case of a dewatered cake having a solid content of Wd as a non-fluid substance.

First, in response to the control signals s ₁ and s ₂ , the on-off valve V ₁ is opened and the on-off valve V ₂ is closed, and the pressure feed pump (not shown) is operated to move the diluent tank 4 from the diluent storage tank. Pump the dilution water to 3. Off valve V ₁ are closed by the control signal s ₁ when the dilution water began to overflow from the diluent storage tank 3 for the overflow port 3a, to stop the operation of the pressure pump. At this time, a certain amount of dilution water corresponding to the internal volume is stored in the diluent storage tank 3. This value is defined as Wa.

Next, the on-off valves V ₂ and V ₃ are opened by the control signals s ₂ and s ₃ , and the on-off valves V ₂ and V ₃ are opened by the control signals s ₄ and s _5.
4, the V ₅ in the closed, then supplied to the dilution tank 6 part of the dilution water from the pipe p _3, on-off valve V ₃ by the control signal s ₃
To close. At this time, the control signal s ₇ by operating the weighing means (load cell) D by simultaneously weighed empty weight of the dilution tank 6, were weighed weight of the supplied dilution water, each of the weighing signal w is operation means G Is entered and stored.

Next, the three-way on-off valve V ₀ is operated by the control signal s ₀ , and the cake supply path L ₁ -cake waste path L ₂
- supplying the dilution tank 6 dehydrated cake has been transferred to the path of the cake waste containers 2 from the sample collection passage L _3. At this time, the weight increase state of the supplied sample is continuously grasped by the weighing means D, and the weighing signal w is input to the calculating means G, and the value thereof is stored in the calculating means G in advance. The operation is compared with the allowable value range. Then, when the cumulative weight of the supplied sample is out of the allowable range of the threshold value, the three-way switch valve V ₃ from the computing means G to the control unit F is transmitting a command from the control signal s ₀ to the closed issued, by them, the three-way switch valve V ₃ becomes closed, the sampling operation is stopped.

The weight of the dehydrated cake collected at this time is defined as Wc. This value is input to the arithmetic means G and stored. Then, controlled by the signal s ₆ drives the stirring means 7, after the diluted sample was prepared by a desired time mixing and stirring the dilution water and the dehydrated cake in the dilution tank 6, the stirring means 7 by a control signal s ₆ Stop driving.

Control signal s_FiveOn-off valve V_FiveOpen,
The control signal s₈Open / close valve V ₆Close the dilution tank
The diluted sample in 6 was supplied to the preparation tank 8 through the opening 6a.
And the control signal s_FiveOn-off valve V_FiveTo close. About
And the control signal s_ThreeOn-off valve V_ThreeOpen and piping p_Three
, The dilution water is sprayed to the dilution tank 6 and the stirring means 7 and adhered.
Wash away any diluted samples that are present. At this time, the weight of the washing liquid is weighed.
Is weighed by the weighing means D and the value is input to the calculating means G
Is stored.

The on-off valve V ₅ is opened by the control signal s ₅ , and the cleaning liquid is additionally supplied to the preparation tank 8 through the opening 6 a. When the dilution water still remains in the dilution water storage tank 3, for example, the on-off valve V ₄ is opened by the control signal s ₄ , and the total amount of the remaining dilution water may be supplied to the preparation tank 8. .

[0050] When the collected dehydration cake total amount (Wc) and the total amount of dilution water has been stored (Wa) is stored in the preparation tank 8, the desired time the whole by driving the agitation means 9 by a control signal s ₉ A fluid sample is prepared by mixing and stirring. At this time, the water content of the prepared fluid sample was set to M ₁
Then:

[0051]

(Equation 1)

Holds. By transforming this, the following equation is obtained: Wd = (Wa + Wc) (100−M ₁ ) / 100 (2) On the other hand, if the water content of dehydrated cake to M _R (%), M _R has the formula:

[0053]

(Equation 2)

## EQU5 ## Substituting equation (2) into equation (3) gives the following equation:

[0055]

(Equation 3)

Holds. In the equation (4), Wa is stored in the arithmetic means G in advance as a known amount, and Wc is weighed by the weighing means D and stored in the arithmetic means G. Then, M ₁ pipes the fluid sample prepared in the preparation tank 8 through a pipe p.
_{From 5} it can be transferred to a moisture content measurement system and measured.
Then, by inputting the measured value to the calculating means G, the calculating means G can calculate the water content of the dewatered cake which is a non-fluid substance by performing the calculation represented by the above equation.

[0057]

As is apparent from the above description, according to the sampling apparatus of the present invention, it is possible to sample a non-fluid material without needing to obtain it, so that the manual operation is complicated and uncertain. It is possible to automatically prepare a fluid sample for measuring various properties by diluting a non-fluid substance with a diluting liquid without causing inconveniences such as the above. In addition, the water content of the fluid sample at that time can also be automatically obtained, and the water content of the non-fluid material as the sample can be calculated from the result.

Therefore, the sampling apparatus of the present invention is useful for measuring the water content of a dewatered cake or a non-fluid sludge slurry formed during sewage treatment.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram showing an example of a sampling device according to the present invention.

[Explanation of symbols]

A sample collection means B diluent supply means C sample dilution means D weighing means E fluidity sample preparation means F control means G calculation means 1 cake sampling pump 2 cake disposal container 3 diluent storage tank 3a overflow port 3b cover 4 dilution liquid tank 5 opening 7 of the drain tube 6 dilution tank 6a dilution tank 6 stirring means 8 preparation tank 9 stirring means L ₁ cake supply path L ₂ cake discarded path L ₃ sampling path _{p 1, p 2, p 3} , p 4 , p ₅ pipe V ₀ the three-way switch valve _{V 1, V 2, V 3} , V 4, V 5, V 6 -off valves _{s 0, s 1, s 2} , s 3, s 4, s 5, s 6, s ₇ , s
₈ , s ₉ control signal w weighing signal

Claims (3)

[Claims] 1. An apparatus comprising: a sampling means for collecting a sample of a non-flowable substance containing a liquid; a diluting liquid supply means for supplying a predetermined amount of diluting liquid; and an opening provided with an on-off valve at a lower part. A sample diluting unit for preparing a diluted sample by mixing a sample supplied from the sample collecting unit and a part of the diluting liquid supplied from the diluting liquid supplying unit, and disposed in the sample diluting unit;
A weighing means for weighing the weight of the sample diluting means and the content thereof, and mixing the diluted sample supplied from the sample diluting means with the remaining diluent supplied from the diluting liquid supplying means to form a fluid sample A fluid sample preparation means to be prepared, and a control means for controlling a sample collecting operation, a diluent supply operation, a diluted sample preparation operation, a weighing operation of the weighing means, a diluted sample supply operation, and a fluid sample preparation operation. A non-fluid sampling device characterized by comprising: 2. An apparatus comprising: a sampling means for collecting a sample of a non-flowable substance containing a liquid; a diluting liquid supply means for supplying a predetermined amount of diluting liquid; and an opening having an opening / closing valve at a lower part thereof. A sample diluting unit for preparing a diluted sample by mixing a sample supplied from the sample collecting unit and a part of the diluting liquid supplied from the diluting liquid supplying unit, and disposed in the sample diluting unit;
A weighing means for weighing the weight of the sample diluting means and the content thereof, and mixing the diluted sample supplied from the sample diluting means with the remaining diluent supplied from the diluting liquid supplying means to form a fluid sample A fluid sample preparation means to be prepared, and a control means for controlling a sample collecting operation, a diluent supply operation, a diluted sample preparation operation, a weighing operation of the weighing means, a diluted sample supply operation, and a fluid sample preparation operation. Computing means for calculating the water content of the non-fluid material from the total weight of the diluent supplied to the fluid sample preparation means and the total weight of the non-fluid substance weighed by the weighing means. A sampling device for a non-fluid material. 3. The non-fluid sampling apparatus according to claim 1, wherein the non-fluid is a dewatered cake or a non-fluid sludge slurry.