JP2021070305A - Stirrer system capable of confirming concentration of cement milk in semi-dry type rock wool spray construction - Google Patents

Abstract

To solve the problem that, even when a discharge amount ratio between rock wool and cement milk used in a semi-dry type rock wool spray construction is proper, if the concentration of the cement milk is not proper, bulk density becomes a problem at a sampling inspection after the operation, and trouble has been caused in the whole process such as the need of taking a correction step.SOLUTION: A volume regulating faucet 3 feeding pre-set water quantity is fitted to a faucet feeding water to a stirrer upper tank 1 making cement milk, the volume regulating faucet 3 is provided with a water quantity sensor 5, and the data of the water quantity is detected. A cement automatic charge unit 4 weighing cement and charging the same that is fitted to the stirrer upper tank 1 is also provided with a cement weight sensor 6, and cement weight data are detected. Those data are imported into a control unit 11, and a cement concentration is calculated and is displayed on a monitor unit 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a stirrer system that can easily confirm the concentration of cement milk in a semi-dry rock wool spraying work.

ントを撹拌させて３３．３％の濃度のセメントミルクを生成する。そのセメントミルクはポンプを使って圧送しロックウールと混合させて耐火被覆を形成する。セメントミルクの生成方法は、攪拌機上槽の内側に取り付けられている目印に被るまで水を入れ、そこに袋セメントを投入していた。１日２０回以上セメントミルクを生成すると攪拌機上槽の内側にセメントミルクが重なり付着してしまい、容量が減じて、想定する量以下の水でセメントミルクを生成することがしばしばあった。

Stir the cement milk to a concentration of 33.3%. The cement milk is pumped and mixed with rock wool to form a refractory coating. In the method of producing cement milk, water was poured until it covered the mark attached to the inside of the upper tank of the stirrer, and bag cement was poured there. When cement milk was produced 20 times or more a day, the cement milk overlapped and adhered to the inside of the upper tank of the stirrer, and the volume was reduced, and cement milk was often produced with less than the expected amount of water.

If the bag cement absorbs moisture and the cement partially solidifies inside the bag, it is removed when it is put into the stirrer. In addition, when a worker puts in bag cement, the amount of cement may be less than the required amount because it may be spilled by mistake. In that case, there was no way to grasp how many kg was insufficient, and it was overlooked.

As a remedy for this, instead of pouring water in accordance with the stirrer, a fixed quantity water stopcock is attached to the faucet to supply a fixed amount of water to the upper tank of the stirrer, and a unit that measures cement and automatically pours it By setting it in the upper tank, accidental reduction in cement input is eliminated. By making the weight ratio of water and cement, which are the raw materials of cement milk, constant, the concentration of cement milk can be stabilized.

In the conventional semi-dry rock wool spraying method of cement milk generation method, water is poured so that the water surface comes to the position of the mark inside the stirrer upper tank, and the worker drops the bag cement into the stirrer upper tank little by little. It is thrown in and generated.

When cement milk was produced 20 times or more a day, the cement milk adhered to the inside of the upper tank of the stirrer and the amount of water charged was gradually reduced. In addition, the amount of water input is not stable because it depends on the subjectivity of the workers in charge of the plant to add water until the water surface reaches the mark position. The bag cement is packed in 25 kg, but when it is put into the stirrer from the bag, 25 kg may not be put in because spills to the outside of the stirrer and those solidified by moisture absorption are removed.

Unless the amount of water and the amount of cement charged into the upper tank of the stirrer are constant, the concentration of cement milk will not be stable. Even if the discharge rate ratio of rock wool and cement milk is appropriate in the semi-dry rock wool spraying work, the bulk specific gravity does not reach the passing value in the sampling inspection after the work, and additional corrective measures are required and the entire work progresses. Was in trouble.

The amount of cement used in the construction was only recorded manually by the plant personnel. Cement concentration was not objectively confirmed or recorded.

An object of the present invention is to provide a system capable of easily controlling the concentration of cement milk by calculating and displaying the concentration of cement milk used for semi-dry rock wool spraying work.

In the present invention, a fixed quantity water stopcock is installed in the faucet that supplies water to the upper tank of the stirrer to control the amount of water to be charged into the upper tank of the stirrer. A sensor is attached to the fixed-quantity faucet to detect the amount of water introduced. By attaching a unit that takes out the cement from the bag, weighs it, and automatically puts it in the upper tank of the stirrer, it is possible to eliminate mistakes by workers and insufficient amount of cement due to removal of the cement solidified part. A sensor is also attached to the automatic loading unit to detect the weight of cement charged. The water and cement weight data detected by these sensors are taken into the control unit, the concentration of cement milk being manufactured is calculated, displayed, and managed during construction.

The concentration of cement milk calculated by the control unit is displayed as a numerical value, and it is also displayed within the appropriate range.

By not only visually checking the cement milk concentration but also displaying it with light or sound, workers other than the plant staff and construction personnel can easily check whether the cement milk concentration of the material for semi-dry rock wool spraying work is appropriate. You will be able to confirm whether or not.

Record the concentration, total weight, number of injections and drops of cement milk used in the construction, and objectively record the cement used hourly and daily.

Whether or not the concentration of cement milk used in the construction work is within the appropriate range of the cement milk concentration, which is the work guideline for semi-dry rock wool spraying work, not only for construction workers but also for all construction personnel. Can be confirmed during construction.

If the concentration of cement milk is appropriate during construction, it can be expected that the number of cases requiring corrective action in the bulk specific gravity inspection after construction will be reduced, and it will be less likely to hinder the entire construction.

It is a block diagram of the stirrer which added the present invention to the stirrer used in the semi-dry rock wool. It is a block diagram of the control part of this invention. It is a numerical diagram of the appropriate range of cement milk concentration, which is a construction guideline for construction work.

トミルクを生成し、攪拌機上槽１から攪拌機下槽２に投下された後、ポンプで圧送されロックウールと混合して耐火被覆を形成する。セメントミルク生成と生成されたセメントミルクを攪拌機下槽２に落とすためにプラント担当の作業員が配置されている。Two types of raw materials, rock wool and cement, are used for semi-dry rock wool spraying. The stirrer consists of the stirrer upper tank 1 and the stirrer lower tank 2, and the cement is

Tomilk is produced, dropped from the upper tank 1 of the stirrer into the lower tank 2 of the stirrer, and then pumped and mixed with rock wool to form a refractory coating. Workers in charge of the plant are assigned to generate cement milk and drop the produced cement milk into the lower tank 2 of the stirrer.

A fixed-quantity water stopcock 3 that supplies a preset amount of water is attached to the faucet that supplies water to the stirrer upper tank 1, and water is supplied from the fixed-quantity water stopcock 3 through the pressure-resistant hose 7. By setting and supplying the amount of water in advance, a certain amount of water can be charged regardless of the shape of the stirrer upper tank 1. A water amount sensor 5 is attached to the fixed-quantity water stopcock 3, and data on the amount of water injected is sent to the control unit 11.

The cement automatic charging unit 4 for measuring and automatically charging cement is also attached to the stirrer upper tank 1. A cement weight sensor 6 is attached to the cement automatic charging unit 4, and data on the weight of the cement charged is sent to the control unit 11.

The control unit 11 takes in the data from the water amount sensor 5 and the cement weight sensor 6, rebates the added cement weight with the total weight of the added cement and water, and calculates the cement milk concentration. Since the cement is added in several batches, the cement milk concentration increases with each addition of cement.

The cement milk concentration calculated by the control unit 11 is numerically displayed on the monitor unit 12 and displayed on the coordinate axes indicating the appropriate cement milk concentration range. Of the appropriate range of 32.4% to 35.7%, 32.8% to 34.5% is green so that the workers in charge of the plant can easily see whether the cement concentration is within the appropriate range. , 32.4% to 32.8% and 34.5% to 35.7% are yellow, and outside the appropriate range are red and the coordinate axes are color-coded, and the cement concentration is displayed on the coordinate axes.

When the concentration of cement milk produced in the upper tank 1 of the stirrer reaches an appropriate range, the cement milk is dropped from the upper tank 1 of the stirrer to the lower tank 2 of the stirrer. , The unlock signal is sent from the control unit 11 through the unlock signal cable 10, the lock is released, the worker in charge of the plant opens the cement milk dropping plug 8, and the cement milk is dropped into the stirrer lower tank 2.

As can be recognized by the construction manager, the cement milk concentration is green, 32.4% to 32.8% within 32.8 to 34.5% out of the appropriate range of 32.4% to 35.7%. 34.5% to 35.7% is displayed by the indicator light unit 13 equipped with three types of lights of yellow and outside the appropriate range of red.

When the cement milk concentration exceeds the appropriate range, a warning sound is emitted from the alarm unit 14 connected to the control unit 11, and the worker in charge of the plant can immediately take corrective action.

The Internet connection unit 15 connected to the control unit 11 displays data indicating the cement milk concentration on the external terminal of the construction manager via the Internet.

The journal unit 16 that objectively records the time-series data of the cement milk concentration and the daily amount and number of times the material is added is connected to the control unit 11.

The keyboard 17 is connected to the control unit 11 for setting and inputting the control unit.

1 Stirrer upper tank 2 Stirrer lower tank 3 Quantitative water stopcock 4 Cement automatic loading unit 5 Water volume sensor 6 Cement weight sensor 7 Pressure-resistant hose 8 Cement milk dropper 9 Cement milk dropper Lock 10 Unlock signal cable 11 Control unit 12 Monitor unit 13 Indicator light 14 Alarm 15 Internet connection 16 Journal 17 Keyboard

Claims (7)

In the stirrer used in semi-dry rock wool spraying, which mixes cement and water to make cement milk.
The stirrer consists of an upper tank of the stirrer and a lower tank of the stirrer. The faucet that supplies water to the upper tank of the stirrer is equipped with a fixed-quantity water stopcock, and a water amount sensor is attached to the fixed-quantity water stopcock to detect the amount of water and measure cement. The automatic charging unit is also attached to the upper tank of the stirrer, and the cement weight sensor is also attached to the cement automatic charging unit to detect the cement weight, and the data from the water amount sensor and the cement weight sensor are taken into the control unit to capture cement milk. A stirrer system that can confirm the concentration of cement milk in semi-dry rock wool spraying work, which is characterized by calculating the concentration of cement milk. The concentration of cement milk calculated by the control unit is displayed as a numerical value on the monitor unit, and the cement concentration is within the appropriate range of 32.4% to 35.7%, but within 32.8 to 34.5%. The first aspect of claim 1 is that the coordinate axes are color-coded with green, 32.4% to 32.8%, 34.5% to 35.7% are yellow, and outside the appropriate range are red, and the coordinate axes are displayed on the axes. A stirrer system that can confirm the concentration of cement milk in the described semi-dry rock wool spraying work. Of the appropriate range of 32.4% to 35.7%, the concentration of the cement milk is green within 32.8% to 34.5%, and 32.4% to 32.8% and 34.5%. The semi-dry rock wool according to any one of claims 1 or 2, wherein the indicator lamp unit is provided with an indicator lamp whose display color is changed to yellow for ~ 35.7% and red for outside the appropriate range. A stirrer system that can check the concentration of cement milk during spraying work. The concentration of cement milk in the semi-dry rock wool spraying work according to any one of claims 1 to 3, wherein an alarm unit that emits a warning sound is provided when the concentration of the cement milk exceeds an appropriate range. A stirrer system that can be confirmed. A drop plug for dropping cement milk from the stirrer upper tank to the stirrer lower tank and a drop plug lock mechanism for locking the operation of the drop plug are provided, and the concentration of cement milk calculated by the control unit is within an appropriate range. A stirrer system capable of confirming the concentration of cement milk in the semi-dry rock wool spraying work according to any one of claims 1 to 4, wherein the drop plug locking mechanism is sometimes released. A stirrer capable of confirming the concentration of cement milk in the semi-dry rock wool spraying work according to any one of claims 1 to 5, wherein an internet connection portion for displaying the concentration of cement milk on an external terminal is provided. system. The semi-dry rock wool spraying work according to any one of claims 1 to 6, wherein a journal section for recording the time-series data of the cement concentration, the daily cement input amount and the cement milk amount is provided. A stirrer system that can check the concentration of cement milk.

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