JPS5925468Y2 - Measuring and mixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for individually metering and mixing different types of objects, such as one or more liquids and powders.

For example, when making cement milk, conventionally, as shown in FIG. 1, cement 1 is weighed with a weight scale 3 incorporating a load cell 2, and water 4 and hardening accelerator 5 are weighed with flow meters 6 and 7, respectively. Weigh them individually, mix them in the prescribed proportions, and add them to the mixer 8.
to make cement milk, which is then mixed with agitator 9.
from the grout injection device (not shown) via the flow meter 10.
It was to be sent to etc.

In this way, conventionally, a weighing scale for weighing powder,
A separate flow meter was provided to measure the liquid.

However, since these meters are generally expensive, they have been a factor in the high cost of the device.

This drawback became even more significant as the types of powders and liquids to be mixed increased.

In addition, weigh scales with built-in load cells generally have accuracy up to 100 degrees, but flowmeters have accuracy of at most 100 degrees, so even if you increase the accuracy of cement measurement using a weigh scale,
Since it is not possible to increase the accuracy of measuring water using a liquid meter, there is a drawback that the accuracy of cement milk as a whole cannot be improved.

The present invention was developed in view of the above points, and includes a weighing scale attached to a weighing container and a partition plate to divide the inside of the container into two parts for different objects, for example, one for liquids and one for powders. It is designed so that powder and liquid can be measured with one weighing scale.

Furthermore, if necessary, the partition plate that separates the powder from the liquid is provided with a heat insulating structure to prevent harmful effects caused by condensation.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

Reference numeral 11 denotes a cylindrical measuring container with a bottom, and three protrusions 12 are provided on the outer surface of the container at intervals of approximately 120 degrees at a center angle, and a A load cell 14 as a load transducer that extracts changes in load as electrical changes is connected to the fixed part 13.
is installed.

A load cell 14 is connected to the output side of these load cells 14.
A weighing scale 31 is constructed by connecting an indicator 16 via a converter 15 that converts the output of the weighing scale into a weighing signal.

Inside the measuring container 11, there is cement 1 which is a powder.
A cylindrical partition plate 20 made of a heat insulating material is provided to separate the water 18 and the curing accelerator 19 from the water 18 and the curing accelerator 19, which are different liquids. A rectangular partition plate 21 is provided.

Cement 17, water 18, and hardening accelerator 1 are placed on the bottom of each container 11 divided by these partition plates 20 and 21.
Conduits 22, 23, 24 for carrying out 9 are connected,
These conduits 22.23.24 are connected to on-off valves 25, 26.2.
7 to a mixer 28.

A grout injection device (not shown) is connected to the discharge side of the mixer 28 via an agitator 29 and a flow meter 30.

Next, the operation of the present invention will be explained.

First, after carrying out the cement 17, water 18, etc. in the weighing container 11, the on-off valves 25, 26, and 27 are closed to prepare for weighing.

Next, using the weighing scale 31, a predetermined amount of cement 17 is carried into the powder portion of the container 11 and weighed.

Next, using the indicated value of the weight scale 31 as the origin, the container 1
A predetermined amount of water 18 is introduced into one of the liquid portions in the container 1 and measured.

That is, the liquid that was conventionally measured using a flowmeter is also measured using the weighing scale 31.

Similarly, a predetermined amount of the curing accelerator 19 is introduced into the other liquid portion of the container 11 and measured.

After each measurement is completed, the on-off valve 25° 26.27 is opened to transport the cement 17, water 18, and hardening accelerator 19 to the mixer 29, where they are mixed to make cement milk. 25, 26, and 27 to prepare for the next weighing.

In the embodiment, a partition plate 2 for separating powder and liquid is used.
0 was made into a cylindrical shape to prevent the powder from becoming an uneven load and causing errors in measurement, but the present invention is not limited to this, and it does not have to be cylindrical as long as the powder does not become an uneven load. good.

Further, although this partition plate 20 is made of a heat insulating material to prevent condensation, the present invention is not limited to this, as long as the same effect can be obtained, and for example, a heat insulating structure with a vacuum layer provided inside may be used.

However, if, for example, there is not much difference in temperature between the powder and the liquid so that no dew condensation occurs, there is no need for a heat insulating structure.

Furthermore, although the partition plate 21 for separating the liquid water and the curing accelerator is made into a short shape, the shape is not limited to this. For example, when partitioning liquids with a large difference in specific gravity, the partition plate 21 is made into a cylindrical shape to prevent uneven loads. Just try to avoid it.

In the above embodiment, three load cells 14 were used as the load I/transducer, but the number can be increased or decreased as appropriate depending on the usage situation.

For example, for level measurements that do not require much measurement accuracy, using two units will simplify the electrical configuration and reduce the cost.
For the measurement of heavy objects that require precision, the accuracy can be increased by using four or more.

In the above-mentioned embodiment, the explanation was given using the example of mixing three types of powder 1 and liquid 2, but the present invention is not limited to this, and the present invention is not limited to this. Can be used for mixing four or more types of liquids.

Moreover, only powder or only liquid may be used. Solids and granules can also be used.

In the above embodiments, a cement milk mixing device has been described as an example, but the present invention can be applied to powders and liquids that need to be weighed separately before being mixed.

For example, it can be used in a food mixing device that weighs flour, water, coloring agent, etc. and mixes them at a predetermined ratio, or a chemical stirring device that weighs two or more samples and stirs them at a predetermined ratio.

In this invention, as mentioned above, a single weighing scale is used to measure different types of objects, such as powder and liquid. Since a separate flowmeter is not required, the cost of the device can be reduced, and the measurement accuracy can be improved while only using a highly accurate weighing scale.

In addition, when using a heat insulating structure for the partition plate that separates the measuring container into powder and liquid, it is important to avoid problems caused by the temperature difference between the powder and liquid being mixed. Since the temperature is low, it has the advantage of preventing dew condensation from forming on the powder side container.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional measuring and mixing device, FIG. 2 is an explanatory diagram showing an embodiment of the measuring and mixing device according to the present invention, and FIG.
The figure is a partial plan view of FIG. 2. 1.17...Cement, 2.14...
Load cell, 3゜31... Weight scale, 4.18.
...Water, 5,19...Curing accelerator, 6.
7,10.30...Flowmeter, 8,28...
...Mixer, 9゜29...Agitator-11
1...Measuring container, 12...Protrusion,
13... Fixed part, 15... Converter, 1
6... Indicator, 20.21... Partition plate, 22, 23.24... Conduit, 25, 26゜2
7...Open/close valve.

Claims (1)

[Claims for Utility Model Registration] (1) In a device that weighs different objects individually and mixes them in a predetermined ratio, one weighing scale is attached to one weighing container, and the container is partitioned. A weighing and mixing device characterized in that the weighing scale is divided into different kinds of objects by plates, and different kinds of objects are weighed with the one weighing scale. (2) The measuring and mixing device according to claim 1, wherein the different objects are a liquid and a powder. (3) The measuring and mixing device according to claim 1 or 2, wherein the partition plate for separating different objects is provided with a heat insulating layer. (4) The weighing and mixing device according to claim 1, 2 or 3, wherein the weight scale is a measuring device incorporating a load cell.