JPS623054A - Manufacture and equipment for finished products from gravel and sand - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION In this invention, after sorting raw car products, sample 1! The present invention relates to a method for producing finished products of gravel and sand from raw products, and an apparatus for carrying out the process, in which the results are analyzed and compared with target values.

For example, gravel and sand ↓U'l! ! l The raw material product meets the German Industrial Standard for type M or B sand (D-N-Vorsc).
It is extremely rare to be found in nature with particle zone configurations matching hrift). This type of sand f:a is used for washing off impurities from the solid material fed, for example, in vertical strings (Patent No. of the Federal Republic of Germany, Patent No. 2).
There are various types of sand sorters, such as sand worms, upflow classifiers, cyclones, etc. This screener is manually adjusted with respect to the quality of the sand when fed with a certain amount of raw material. This is accomplished by taking a sample of the finished product and then evaluating t'L in the laboratory. In this case, in the evaluation,
A long period of time is required, during which time the equipment continues to operate, possibly resulting in an incomplete product.

Based on the results of the experiment, the sorter is then manually adjusted anew, the adjustment being achieved according to the operator's experience. Furthermore, as is found in practice, the particle zone configuration of the raw material is constantly fluctuating and sands of quality A and B according to the German Industrial Standards in question can never always be produced economically. However, for many applications, such as crosslinking, it is extremely important to keep a certain sand quality constant. Furthermore, the known method has the disadvantage that the yield of raw materials is undesirable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for atmospheric pressure monitoring of changes in the particle zone of a finished product and for reacting to changes either half-white or completely automatically. .

According to the invention, in order to achieve this objective, a partial quantity is extracted from the finished product for sample removal, which is separated into a number of components, and which is divided into a target value and a current value. After comparison, it is mixed into the finished product or recovered ingredients.

In the device according to the invention for carrying out the method as described above, which has a sorter for the raw product, a sample taker is arranged at the outlet of the finished product, in which a sample extractor is arranged for particle components of size &. A separator follows, with a measuring device being provided for the particulate component, which transmits the data to an evaluator, which adjusts the contamination of the particulate component, and actuating the regulator for the sorter or raw product inlet;
or achieve any of the above.

According to a preferred embodiment, the individual particle components are connected via a distribution switch to the discharge section and the collection section.

In general, it is desirable that the first particle component can be delivered directly to the discharge section.

According to another proposal, the evaluator comprises a constant or adjustable setpoint value provider.

When the current value in the measuring device and the adjustment match, the evaluator sends a control pulse to the regulator via the line.
Roughly desirable.

It is further proposed that the distribution switch can be controlled by the evaluator.

It is desirable that the output of the finished product can be repeated as often as desired, depending on the program or storage in the evaluator.

According to another proposal, the sample extractor consists of a gate of bulk material.

According to another proposal of the invention, a sieve, an upflow classifier, a wind sieve, etc. are provided as the separator.

According to another suggestion, the measuring device is crooked! The entire structure is movably mounted at its ends at the inlet and at the outlet, and the curvature t is guided into the weighing cell at the point of inflection.

According to the method and apparatus according to the present invention (C), VC can be performed immediately, regularly or within a certain time unit without wasting time.
The displacement of the particle zone of the raw material product can be dealt with semi-automatically or fully automatically. The control and regulation unit is connected to the raw product sorter.

Embodiments of the present invention will be described below with reference to the drawings.

To explain the structure of the method and apparatus according to the invention,
First, reference is made to FIG. Here, the raw product is fed to the sorter 1 by means of conveyor belts, saws or pump feed passages.

As an embodiment of this sorter, there are several possible examples, such as a device with a washing bed.

In the case of a washing bed, an upflow classifier, sand worm, cyclone, etc. can be used as the 8-sifter, which can control the discharge amount of fine sand by changing its depth.

The finished product is discharged to the discharge section. Harmful substances and excess fine sand are sent through the collection channel 13 to low-lying areas or to a collection machine 7, where the fine sand can be collected.

At the discharge part D, the sample is removed by a sample remover. The sample extractor can be constituted by a gate of bulk material, for example as shown in FIG. The sample taken out reaches the separator 3 from the sample counter =,
Here, the sample is separated into at least one particle component. Here, the eleven particle components IO can be fed directly to the finishing product outlet D or can be discharged separately. The first grain component //> and the third grain precomponent l- are, in the illustrated embodiment,
From the separator 3, one particle component is led to the fine particle component analyzers Da and Hiro', respectively, where the measurement is accomplished.
And the discharge part of the saw is the discharge part of excess fine products / 3!
L, one particle component that can be transported directly or separately // and for the control of the saw, each channel 16 and 16'
Dispensing switches 6 and 6' are provided in the discharge channel 9, which also allow particulate components to be mixed into the finished product in the discharge channel 9.

The fine particle measuring device is connected to the control line 17°17'f.
via the evaluator, y rc is connected, which is roughly connected to the regulator & via line 15, and also to the line i
It is connected to the distribution switch 6°6' via g and ig'. At this time, line /7. The signal arriving through /7' is constantly compared with an adjustable target value. If it is biased from the target value, the evaluator 5, according to the bias,
A control pulse is applied to the regulator g. This pulse is emitted until the starting pulse corresponds to the established target value.

During this time, a similar control of the distribution switch 6.6' is also achieved.

, the evaluator 5 is the fine particle component measuring instrument Hiro, Da'.
In addition, selectable stocks can be provided to produce a desired finished product of S yuzu, which may or may not have instructions of composition to maintain a constant strength. By means of the control pulses given to the regulating section S by the line 15, the raw product sorter / is adjusted, and the adjusted target value of the fine particle component is determined by the component //, /- in the fine particle component measuring devices t, q'. When it matches the fine particle component of
A desired finished υ product is produced. This allows the ingredients/
When /, /- oscillation continues, ! LiJ adjustment will also continue. The adjustment part g can also act on the raw product inlet part/4t, in which case the inlet chute, the shower device, the rising water flow and the inlet amount are adjusted by the 0-distribution switch 6.
For sliders, aperture flaps, distribution chutes,
A pinch cock etc. is used.

12 and 3 illustrate embodiments of the separator 3 and the measuring devices 4, 4'. The separator 3 can consist of a sieving machine, in which the sample taken is separated into different components io, li, i. Therefore, the sieving machine has a sieve plate l? The dough is divided along the longitudinal and transverse axes to obtain the grain components of the seeds.

For separation, a partition 20 is provided, as shown in particular in FIG. Screening cherry can also be formed by a sieve having many sieve plates. funnel, 2
The mixture of fine sand and water near the bottom of the curved pipe = 2
reach inside. The ends of this are movably mounted at the inlet 23 and outlet locoders. The curved tube is held at the bending point S by the weighing cell roller. This converts the applied load, based on the change in weight in the volumetric flow, into a corresponding electrical signal, which is applied to the estimator S. The volume can be accurately read by a nozzle with replaceable telescopic parts at the inlet = 3 or by a slider at the exit loco. Instead of such a weighing cell, an ultrasonic cell, a radiation density measuring device, etc. may be provided. As shown in Figure 3, many components l
Many curved pipes 2= are arranged in parallel θ with respect to / and /−.

In Figure 1 an embodiment of the sample extractor is shown, which is constructed as a gate of bulk material. In this,
A partition wheel g is driven inside the housing. With such a take-off device, a constant quantity can always be taken out of the finished product stream.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a device according to the invention. The diagram is a front view of an embodiment of the separator and meter. Figure 3 is a side dish! 91 is a sectional view of the device of FIG. 2. Figure 5 is a cross-sectional view of an embodiment of the sample extractor. In the drawing, l is a sorter, C is a sample taker, J is a separator, Da and Da' are measuring devices, S is an evaluator, 6 and 6' are distribution switching devices, ri is a collection device, and g is a control unit. shows. Procedural amendment (method) July 23, 1986

Claims (1)

[Scope of Claims] 1. In a method for producing finished products of gravel and sand from raw materials, the method includes taking out a sample after sorting raw materials, analyzing the sample, and comparing it with a target value. A method characterized by extracting a partial amount from the finished product, separating it into many components, and mixing these into the finished product or recovered components after comparing the target value and the current value. . 2. After sorting the raw products, take out the sample, analyze it, and compare it with the target value. A sample extractor (2) is arranged in the finished product discharge section (9), and various particle components (10
, 11, 12), a measuring device (4, 4') is provided for the particle components (10, 11, 12), from which , the data is transmitted to the evaluator (5), and the evaluator calculates the particle component (1
0, 11, 12) into the finished product or the recovered components and actuates the regulating part (8) for the separator (1) or the feed part (14) for the raw product; A device characterized in that it accomplishes any of the following: 3. The individual particle components (11, 12) are transferred to the distribution switch (6).
, 6'), the discharge section (9) and the collection section (13).
2. A device according to claim 2, which can be delivered to. 4. Device according to claim 2 or 3, in which the first particle component (10) can be fed directly into the outlet (9). 5. Device according to one of claims 2 to 4, characterized in that the evaluator (5) is provided with a constant or adjustable setpoint value applicator. 6. the evaluator (5) sends control pulses to the regulator (8) via the line (15) until an agreement between the current value and the target value in the measuring device (4, 4') is achieved; An apparatus according to any one of claims 2 to 5. 7. Device according to any one of claims 2 to 6, in which the distribution switch (6, 6') can be controlled by an evaluator (5). 8. According to any one of claims 2 to 7, by means of a program or a storage in the evaluator (5), the discharge of the finished product (9) can be repeated as often as desired. equipment. 9. The sample extractor (2) consists of a gate of bulk material;
An apparatus according to any one of claims 2 to 8. 10, the separator (3) is a sieving machine, an upflow classifier,
Apparatus according to any one of claims 2 to 9, comprising a wind sieve or the like. 11. The measuring device (4, 4') is equipped with a curved tube (22),
Its ends are movably mounted at the inlet (23) and outlet (24), and at the bending point (25) the curved tube is attached to the weighing cell (
Claims 2 to 10 connected to 26)
Apparatus according to any one of paragraphs.