JPS62275707A - Water weigher structure in concrete production unit - 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 a Detailed Description of the Invention The present invention relates to a patch-type concrete production device that produces high-strength concrete by forming a cement paste-like outer coating layer on aggregate during the mixing process in a mixer. It is.

In the concrete manufacturing method, aggregate and cement are kneaded to have an approximately constant amount of water (referred to as primary water amount) uniformly on the surface relative to the amount of cement, and a cement paste-like outer coating layer is formed on the aggregate. After that, the remaining amount after subtracting the primary water amount from the concrete mix water amount (referred to as the secondary water amount) is added and kneaded to obtain the specified mix of Iζ.Concrete manufactured by Iζ is produced by the action of the outer coating layer of the aggregate. It is known that high-strength concrete can be produced that is about 13 times more strong than that produced by conventional concrete production methods with the same mix. However, in conventional patch-type concrete manufacturing equipment, the water meter only has the function of measuring the entire amount in one measuring tank and discharging the entire amount continuously, and instead measures the amount of primary water and secondary water separately. , cannot be discharged. Even if the discharge valve is manually closed at the time of discharge, Dg is repeatedly closed and discharged in parts, it is always divided into the same amount, and since several dozen types of concrete with different compositions are produced alternately, it is difficult to It is impossible to divide the amount of water into the correct amount of primary water and secondary water, making it impossible to always produce the best high-strength concrete that is stable.

The purpose of this high-strength concrete is to form a cement paste-like outer coating layer on the aggregate as described above, but rather than simply making cement paste from cement and water, the mixing ratio of cement and water is important. It has become an element. Therefore, in order to manufacture this concrete, the correct amount of primary water is determined for the amount of cement used, the total amount of water mixed in the concrete is divided into the amount of primary water and the amount of secondary water, and the amount of primary water and aggregate are mixed evenly. It is necessary to ensure that the cement is mixed properly.

The present invention enables the production of high-strength concrete without changing the layout of the existing factory by adding or modifying a small amount of equipment. can be set, and a calculation device that can calculate the primary water volume and secondary water volume from the ratio, the concrete material mixture value, and the surface water percentage of fine aggregate, and then instruct the water meter to set the values, and the primary water volume. - To provide a patch type concrete manufacturing device capable of manufacturing high-strength concrete, which is equipped with a free water meter that can measure the amount of secondary water separately and discharge it to a mixer separately.

Next, an embodiment of the present invention will be described based on FIG.
Calculate the secondary water amount using the following formula.

Water blending value is W1, fine aggregate blending value is 8, cement blending value is C
1.The total water measurement value is WO.11.The primary water amount is Wl.The secondary water amount is W.
2. If the fine aggregate measurement value is SO1, the fine aggregate surface water percentage is A%, and the ratio of primary water amount to cement amount is B%, then equation 0 is expressed by the conditional equation. If the next 0
Find the primary water volume and secondary water volume using the formula and 0 formula.

If Equation 0 is not satisfied, calculate the primary water amount and secondary water amount using the following Equation 0 and Equation 2.

Wl-0・・・・・・・・・・・・・・・ 0 type 3 shows a water meter, and the primary water chamber 6 and the secondary water chamber 71 are completely partitioned by the partition plate 5. 1 f' (1y Two-chamber measuring tank 4 and primary water meter claw valve 8. Secondary water measuring valve 9. Primary water discharge valve 1
0. The secondary water discharge valve 11 and the receiver are composed of a hopper 12. When explaining the concrete manufacturing procedure, the operator displays the mix values of the concrete materials on a perforated card (
(not shown) in the card reader 20, set the required ratio with the fζ primary water/cement ratio setting device, and issue a measurement instruction from the operation panel (not shown). The surface water percentage A of the fine aggregate in the tank 14 is measured and input to the calculation device 1. The calculation device uses the setting values of the primary water/cement ratio setting device and the mixture values S, W, and C from the B1 card league to calculate the fine aggregate measurement value and the primary water amount using the calculation formula f shown above. , find the secondary water volume and calculate its value So, Wl
, 'Instruct each measuring instrument to set wV2. The water meter measures water in the water storage tank 13 by Wl into the primary ice chamber by operating the primary water metering valve, and after measurement is completed, measures W2 into the secondary ice chamber by operating the secondary water metering valve. Cumulatively measure the total amount of WO into the water measuring tank. At the same time, fine aggregate is also measured using fine aggregate metering valve 1.
By the operation 6, 80 is weighed into the fine aggregate measuring tank 17, and other materials (not shown) such as cement, coarse aggregate, and additives are also weighed into the scales. Conventionally, after the additive has been measured, it is discharged from the water meter E and put into the mixer together with water, but in the present invention, it is discharged into the secondary ice chamber and discharged together with the secondary water into the mixer. This is because when the additive is discharged together with the primary water, it is difficult to form a shell layer on the aggregate.
This is to avoid some things that may have a negative effect. After measuring all the ingredients as above, mixer 19
First, open the fine aggregate discharge valve 18 and the fire water discharge valve, add fine aggregate and primary water, then add coarse aggregate from the coarse aggregate meter fitter, and mix the mixer for the necessary time. Next, pour the cement into a mixer using a cement measuring device and knead it for the required time to form a cement paste-like shell layer on the aggregate. Set the discharge valve 11 to 0.
Secondary water is added and the mixer continues kneading for the necessary time to produce high strength concrete with a constant mix of RY1. In this example, the surface water of the fine aggregate is measured using a moisture meter, but in a factory with good aggregate storage management, there is not much change in the surface water, and the surface water of the fine aggregate is measured at each cross-contact patch. There's no need to. In such a case, it is not necessary to equip a moisture meter, and the surface water percentage may be input into the calculation device using a fine aggregate surface water percentage setting device.

To add another example, in Figure @2, the water measuring tank 4 does not have a partition plate, and the total water measurement value Wo shown in equation 0 is measured in the measuring tank (ζ) by the operation of the water measuring valve 21. , said first
At the time of discharging the primary water and secondary water explained in the example shown in the figure,
The following operation of the water discharge valve 22 allows the primary water and secondary water to be accurately introduced into the ε mixer. First, surround the water discharge valve, start pouring measured water into the mixer, and close the discharge valve when the amount of water remaining in the measuring tank reaches W2. In this way (ζ), the primary amount of water is input into the mixer, and when the next secondary amount of water is input, the discharge valve is opened again and the remaining 2
Fire water fJ, W 2 is all put in [Ekisa fko.

FIG. 3 shows a case where dedicated measuring devices for the primary water amount and secondary water amount are provided separately, and the operation is the same as the embodiment shown in FIG. 1. Although only the water meter portion is shown in both FIGS. 2 and 3, the combination with the arithmetic device is the same as in FIG. 1.

Although the water supply invention has been explained based on the embodiments, the features of the present invention include a calculation bag (mu) that can calculate the primary water amount and secondary water amount and instruct the water measuring device to set the values. Next water volume/
The amount of secondary water can be measured or discharged separately according to the instructions of the calculation device. By being equipped with a wastewater meter, even if the mix of concrete manufactured for each patch is different, the outer shell is made of cement paste as aggregate. The purpose of this invention is to provide the most suitable amount of primary water for forming the shell layer to ensure the production of high-strength concrete, and the present invention is not limited to the examples, but is within the scope of the spirit of the present invention. Various design changes can be made within the unit.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the relationship between a computing device, a water meter, and a fine aggregate meter according to the present invention. 2 and 3 show other embodiments of the water meter section. 1... Arithmetic device 2... Primary water/cement ratio setting device 3...
...Water meter 4...Water measuring tank 5...Partition plate 6...Primary ice chamber 7...Secondary ice chamber 8...Primary water measuring valve 9...Secondary water measuring valve 10...Primary water discharge valve 11...2 Fire water Discharge valve 12 ..... Hopper 13 ..... Water tank 14 ..... Fine aggregate storage tank 15 ..... Moisture meter 16 ... ...Fine aggregate measuring valve 17...Fine aggregate measuring tank 18...Fine aggregate discharge valve 19...Mixer 20...Card league 21... ... Water metering valve 22 ... Water discharge valve A ... Fine aggregate surface water rate B ... Ratio of primary water amount to cement) Jfk C
...Cement blending value S...Fine aggregate blending value SO...Fine aggregate measurement value W...Water blending value WO......Total water measurement value Wl ...Primary water volume W2...Secondary water volume Rγ□t-i't+i, f#
+*zrl Kan 1 Ro procedural amendment IF (voluntary) June 11, 1988 1, Indication of the case 3, Person making the amendment Relationship with the case Applicant Kame 4, Subject of the amendment Companion to the specification 5 , Contents of amendment 1) The entire text is corrected as shown in the attached sheet. 2) Tank Kanoze H1K name map and separate bed tsugu 1 diagram 1 ftff1
4. Full text of the revised specification 1. Name of the invention Water meter structure for concrete manufacturing equipment 2. Scope of claims In the manufacture of concrete in which the amount of mixed water of concrete materials is divided into a primary water amount and a secondary water amount and kneaded, one tank is used. The measuring tank is divided into two by a partition plate, and one of the divided parts is used as a primary ice chamber and the other as a secondary ice chamber. Water for concrete production equipment characterized by having a one-tank, two-chamber system for cumulatively measuring primary water volume and secondary water volume, with a metering valve placed on the inflow side of each water chamber and a discharge valve on the outflow side. Weighing instrument structure. 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a concrete manufacturing apparatus that divides the amount of water to be mixed into a primary water amount and a secondary water amount during the mixing process in a mixer for concrete manufacturing. It is something. (Prior art) In a concrete manufacturing method, aggregate and cement are mixed so that a substantially constant amount of water (referred to as primary water amount) relative to the amount of cement is uniformly distributed on the surface of the mixing water, and cement is applied to the surface of the aggregate. After forming a paste-like outer shell layer, the remaining amount after subtracting the primary water amount from the concrete mix water amount (referred to as the secondary water amount) is added and kneaded to obtain a predetermined mix. Concrete is manufactured by: Due to the action of the outer shell layer on the surface of the aggregate, it is approximately 1.5 times smaller than concrete made using the conventional concrete manufacturing method, in which the same mixture is mixed with other materials by pouring the entire amount of mixing water into a mixer.
．． It is known that it is possible to produce high-strength concrete that is more than three times as strong. However, in conventional concrete manufacturing equipment, the water meter only has the function of measuring the entire amount in one measuring tank and discharging the entire amount continuously, and the water meter only has the function of measuring and discharging the primary water amount and secondary water amount separately. Even if the discharge valve is manually opened and closed repeatedly to discharge the concrete in parts, it will always be divided into the same amount, or concrete with several different mixes will have to be produced alternately. , it is impossible to divide the water into the correct amount of primary water and secondary water that matches the formulation.
It is not possible to consistently produce the best high-strength concrete. As mentioned above, this high-strength concrete is made by forming a cement paste-like shell layer on the aggregate surface, but rather than simply making cement paste with cement and water, the mixing ratio of cement and water is important. This is the main point. Therefore, in order to manufacture this concrete, a water measuring device can accurately distinguish and measure the primary water amount and secondary water amount.
It is necessary to have a structure that can discharge the primary water amount and the secondary water amount separately. (Means for Solving the Problems) The present invention is capable of measuring and discharging while reliably distinguishing between the primary water amount and the secondary water amount. The water is divided into two by a partition, and one tank is a primary ice chamber and the other is a secondary ice chamber.The primary water volume and secondary water volume can be separated and cumulatively measured using a single two-chamber measuring instrument. Further, it is an object of the present invention to provide a waste water measuring device that can discharge the waste water individually with a time difference and thereby input each waste water into a mixer at an accurate timing.Next, the present invention is implemented based on FIG. For example,
1 allows you to set the ratio of primary water volume to cement volume 1
A calculation device having a secondary water/cement ratio setting device 2 calculates the primary water amount and secondary water amount using the following calculation formula. Water blending value is W, @aggregate blending value is 5. Cement mixture value is C
1.The total water measurement value is Wo, and the primary water amount is Wl. Let W be the secondary water volume value, s be the fine aggregate measurement value, A% be the i aggregate surface water wheel, and let the ratio of the primary water volume to the cement volume be 8%. S, = S (1+ -) ...0 formula%
The formula % is obtained, and the formula (2) is a conditional formula.If the formula (2) is satisfied, the primary water volume and secondary water volume are determined by the first-order 0 formula and 0 formula. If the equation (2) is not satisfied, calculate the primary water amount and secondary water amount using the first-order 0 equation and (2) equation. W, = O・・・・・・・・・・・・・・・0
Equation 3 shows a water meter, and a temporary partition 5 separates the primary water chambers 6 and 2.
The 1-tank 2-chamber metering WI4 divided into the secondary water chamber 7, the 1st firewater metering well 8.2 the firewater metering valve 9, the primary water discharge valve 10.2 the firewater discharge valve 11, the primary water receiver. The hopper 12, the secondary water receiver is composed of a hopper 13, and the secondary water receiver is composed of a hopper discharge valve 14. To explain according to the concrete manufacturing procedure, the operator sets a card (not shown) with perforated concrete material composition values into the card reader 22, and then sets the required ratio using the primary water/cement ratio setting device, as shown in the diagram. When a measurement instruction is issued from the operation panel that is not open, the moisture meter 17 measures the surface water percentage A of the fine aggregate in the fine aggregate storage tank 16 and calculates the calculation bag e1.
Enter 1. The calculation device calculates the fine aggregate measurement value 5 by using the calculation formula shown above based on the setting value B of the primary water/cement ratio setting device and the mixing values S, W, and C from the card reader.
Primary water volume. Determine the secondary water volume and instruct each measuring device to set the value S,, W,, W. The water measuring device directs water from the water storage tank 15 to the primary ice chamber by the amount of WL by operating the primary water measuring valve. Weigh the
Immediately after the primary water measurement is completed, the secondary water metering valve operates to
Next, additionally measure W2 into the ice chamber.Accumulately measure the total amount of water W0 into the water measuring tank as described above. At the same time, the fine aggregate is also measured by S into the fine aggregate measuring tank 19 by the operation of the fine aggregate measuring valve 18, and other materials (not shown), cement, coarse aggregate, and additives are also weighed into the measuring instruments. Conventionally, after completion of measurement, the additive is discharged to a water meter and put into a mixer together with water, but in this embodiment, it is discharged into a secondary ice chamber and discharged together with the secondary water into a mixer. This is because, depending on the type of additive, if it is discharged with primary water, it may have an adverse effect on the formation of the outer shell layer of the aggregate, so this is to be avoided, but for additives that do not have an adverse effect, This is not the case. After all the materials have been weighed as described above, fine aggregate, fire water, and coarse aggregate are put into the mixer 21 from each measuring device, and the mixer mixes them for the required time to ensure that the bones have uniform surface water. Firstly, cement is added and mixed for the necessary time to form a cement paste-like shell layer on the surface of the aggregate.Secondly, water is added, and the mixer continues mixing for the necessary time. This process produces high-strength concrete with a predetermined mix. At this time, the operation of the water meter is to open the primary water discharge valve and the secondary water discharge valve at the same time, the primary water is immediately put into the mixer through the hopper from the primary water receiver, and the secondary water is input from the hopper to the secondary water receiver. When the water is temporarily stored in the mixer, the secondary water receiver opens the hopper discharge valve and the water is poured into the mixer. The present invention is constructed in one or more ways, and the feature of the present invention is that the water meter is a one-tank, two-chamber type measuring tank,
By placing a metering valve on the inflow side of each chamber and a discharge valve on the outflow side, even if the mixture is the same, the amount of mixed water can be divided into the primary water amount and the secondary water amount, thereby achieving higher strength. The purpose of this invention is to ensure that a concrete mixing method that can produce concrete with the same properties can be implemented reliably. moreover. The following effects are produced by using a measuring tank with one tank and two chambers. Management of material measurement values, which are important in concrete manufacturing equipment, allows the amount management of the primary water amount and secondary water amount as independent water amounts, and at the same time, it is also possible to manage the amount as the total water amount W0 after measurement is completed. Furthermore, since two separate water meters for primary water volume and secondary water volume are not required, only one water meter is required, so the installation area within the concrete plant is small and maintenance management is easy. Additionally, additives are mixed into either the primary or secondary water volume depending on the type of additive (for example, AE agent is added to the primary water volume, water reducer is added to the secondary water volume, etc.), and the additives are added to the mixer. This makes it possible to use it in a way that suits its performance. 4. Brief Description of the Drawings rS1 Figure is an explanatory diagram showing the relationship between a computing device, a water meter, and a fine aggregate meter according to the present invention. 1... Arithmetic device 2... Primary water/cement ratio setting device 3...
... Water meter 4 ... Water measuring tank 5 ... Partition plate 6 ... Primary ice chamber 7 ... Secondary ice chamber 8 ... ...Primary water metering valve 9...Secondary water measuring valve 10...Primary water discharge valve 11...Secondary water discharge valve 12... The primary water receiver is hopper 13...
...Secondary water receiver is hopper 14...Secondary water receiver is hopper discharge valve 15...Water tank 16...Fine aggregate storage tank 17...・Moisture meter 18... Fine aggregate measuring valve 19... Fine aggregate measuring tank 20... Fine aggregate discharge valve 21 Mountain... Mixer 22... ... Card reader A ... Fine aggregate surface water rate B ... Ratio of primary water amount to cement amount C
・・・・・・Cement mixture value S ・・・・・・Fine aggregate mixture value S, ・・・・・・Fine aggregate measurement value W ・・・・・・Water mixture value W, ・・・・...Total water measurement value W, ..... Primary water amount W, ..... Secondary water amount

Claims (1)

[Claims] A device that can arbitrarily set the ratio of primary water volume to cement volume, a calculation device that can calculate the primary water volume and secondary water volume, and instruct the water measuring device to set these values, and
Patch-type concrete manufacturing equipment with a water meter that can measure or discharge water separately