JP2002254425A - Discharging mechanism for metering container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent decrease in water-tightness and damage of sealing caused by aggregate existing between a container main body and a bottom lid from being generated. SOLUTION: A discharging mechanism 21 of a metering container is constituted in such a way that fine aggregate is stored with water as an aggregate immersed in water under a condition where the bottom lid 9 is closed in a metering container 11 to perform metering of the aggregate immersed in water and the aggregate immersed in water after the metering is finished is discharged downward by opening the bottom lid 9. In addition, for the discharging mechanism 21 of the metering container, an air jetting nozzle 24 as a gas spraying mechanism communicated and connected with an air compressor 22 through a hose 23 is fixed on a nozzle fixing part 25 stood in the neighborhood of the bottom lid 9 on an L-shaped fitting arm 13 in such a way that air flow can be sprayed on the top face of the bottom lid 9 from the apex of the air jetting nozzle 24 under a condition where the bottom lid 9 is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge mechanism of a measuring container for measuring a concrete material such as aggregate or water.

[0002]

2. Description of the Related Art When mixing concrete on site, the amount of water has a great effect on concrete strength and the like. Therefore, it is necessary to sufficiently control the mixing during mixing. When the aggregate is wet, the amount of water in the concrete increases by the amount of surface water of the aggregate, and when the aggregate is dry, the amount of water in the concrete decreases by the effective water absorption.

[0003] Therefore, it is extremely important to maintain the quality of concrete by correcting the amount of water at the time of mixing according to the degree of dryness and moisture of the aggregate and producing concrete as shown in the specification.

Here, the ratio of the amount of surface water in the wet state (the amount of water adhering to the surface of the fine aggregate) divided by the mass of the fine aggregate in the surface dry state (surface dry saturated state) is defined as the surface water. Although it is called the water content, stored aggregates, especially fine aggregates, are generally often wet, so this surface water content is measured in advance as an indicator of the degree of dryness and moisture of the aggregates, and based on the measured value, It is common to adjust the amount of mixing water.

Conventionally, such a measurement of the surface water content is performed by taking a small amount of a sample from a storage container called a stock bin in which fine aggregate is stored, and measuring its mass and the mass in a completely dry state. Then, calculation was performed using these measured values and the previously measured water absorption in the surface dry state.

[0006]

However, in such a measuring method, since only the entire surface water content is estimated from a small number of samples, there is a limit in terms of accuracy. In order to measure the mass of a sample, it is necessary to perform a heating operation with a burner or the like, and it is impractical in terms of economy and time to sample a sample that is close to the amount actually used and use it as a sample. The problem had arisen.

In order to compensate for such a problem, a method of visually confirming the mixing state by an operator or adjusting the mixing water amount by referring to the load current of the mixer may be adopted. However, such a method itself has low accuracy, and as a result, a large safety factor of about 20% has to be expected in terms of strength, and there has been a problem of uneconomical blending.

[0008] The present applicant has repeated a number of experiments in view of such problems, and as a result, by measuring the aggregate as the water-immersed aggregate, the surface water of the aggregate has been reduced by the water in the water-immersed aggregate. It has been found that it can be measured indirectly as the mass of

According to this technique, first, the aggregate is stored as a water-immersed aggregate together with water in a predetermined measuring container, and then the total mass _Mf and the total volume of the water-immersed aggregate stored in the measuring container. V _f
Know the total mass M _f and the total volume V _f of the aqueous Hitahone material by utilizing the direct or indirect measurement or the inner volume of the weighing container by is known, then these values The mass M _a in the surface dry state of the aggregate in the water-immersed aggregate and the mass M _w of water are calculated using the above formula.

According to this method, the surface water of the aggregate can be accurately reflected as a part of the mass of the water as the concrete material without measuring the surface water content of the aggregate in advance.

However, when the bottom lid of the measuring container is opened and discharged after the immersion aggregate is measured, the aggregate may adhere to the upper surface of the bottom lid.
When the bottom lid is closed for the next measurement, aggregates are interposed between the container body and the bottom lid, reducing the watertightness, making accurate weighing impossible, and sealing due to the inclusion of such aggregates There is a problem that there is a risk of damaging the device.

When the bottom lid of the weighing container is opened and discharged, the water-immersed aggregate in the weighing container spreads during the fall and is not completely charged into the kneading mixer. In some cases, the water and the aggregate may jump out of the kneading mixer with momentum, and in any case, there is a problem that accurately measured water and aggregates cannot be reliably introduced into the kneading mixer.

The present invention has been made in view of the above circumstances, and can prevent a decrease in watertightness and damage to a seal due to the presence of an aggregate between a container body and a bottom lid. An object of the present invention is to provide a mechanism for discharging a measuring container.

Another object of the present invention is to provide a discharge mechanism for a measuring container capable of reliably feeding accurately measured water and aggregate into a kneading mixer.

[0015]

In order to achieve the above object, a discharge mechanism for a weighing container according to the present invention, as described in claim 1, attaches a predetermined bottom cover to a bottom opening of a container body so as to be openable and closable. With the bottom lid closed, the aggregate is housed together with water as water-immersed aggregate in a measuring container, and the water-impregnated aggregate is weighed. A discharging mechanism of a measuring container configured to open and discharge a lid downward, wherein a gas blowing mechanism is provided near the bottom lid, and the gas blowing mechanism is opened from the gas blowing mechanism when the bottom lid is open. The gas flow is blown onto the upper surface of the bottom lid.

In addition, according to the second aspect of the present invention, there is provided a discharging mechanism for a measuring container in which a predetermined bottom cover is openably and closably attached to a bottom opening of a container body. In a closed state, the aggregate is accommodated together with water as a water-immersed aggregate, the water-impregnated aggregate is measured, and the water-impregnated aggregate that has been measured is discharged downward by opening the bottom lid. A discharge mechanism for the weighing container, wherein the bottom cover is configured to be opened or closed by translating or rotating the bottom cover in a horizontal plane, and a gas blowing mechanism is provided near the bottom cover, A gas flow is blown from the gas blowing mechanism to the upper surface of the bottom cover when the bottom cover is open.

Further, in the discharge mechanism of the measuring container according to the present invention, the gas blowing mechanism is constituted by an air ejection nozzle connected to an air compressor.

Further, as set forth in claim 4, the discharge mechanism for a measuring container according to the present invention includes a bottom cover in a measuring container having a predetermined bottom cover openably and closably attached to a bottom opening of a container body. In a closed state, the aggregate is accommodated together with water as a water-immersed aggregate, the water-impregnated aggregate is measured, and the water-impregnated aggregate that has been measured is discharged downward by opening the bottom lid. A mechanism for discharging the weighing container, wherein the bottom cover is opened or closed by translating or rotating the bottom cover in a horizontal plane.

In the discharging mechanism of the measuring container according to the first aspect of the present invention, after the weighing of the immersed aggregate is completed, the bottom cover is opened and the immersed aggregate is dropped and discharged. When the lid is open, a gas flow is blown onto the upper surface of the bottom lid from a gas blowing mechanism provided near the bottom lid.

In this way, even if the aggregate is attached to the upper surface of the bottom cover when the water-immersed aggregate is discharged, the aggregate is blown off by the gas flow, so that the bottom cover is used for the next measurement. Even when the container is closed, no aggregate is caught between the container body and the bottom lid.

Therefore, it is possible to prevent the occurrence of an error in measurement due to water leakage from a gap generated by the sandwiched aggregate, and to damage the sealing member provided on the container body and the bottom cover. Not even.

In the discharging mechanism for the measuring container according to the second aspect of the present invention, after the weighing of the immersed aggregate is completed, the bottom cover is opened and the immersed aggregate is dropped and discharged. To open the bottom cover, the bottom cover is translated or rotated in a horizontal plane, instead of rotating the bottom cover about a horizontal axis as in the related art.

As described above, in the conventional opening / closing type, when the bottom cover is opened, the bottom cover hangs down, so that it is necessary to secure a space for opening and closing the bottom cover in the height direction. In addition, there is no need to secure the opening and closing space in the height direction, and it is sufficient to secure the opening and closing space for the bottom cover only in the horizontal plane.

Therefore, the bottom opening of the container body can be lowered by the height required for opening and closing, which has been indispensable in the past, and it is possible to reliably feed the mixture into the kneading mixer.

The bottom lid may be translated or rotated in a horizontal plane, and may have any configuration. For example, a pair of parallel guide rails may be attached to the lower end of the container body.
The bottom lid may be configured to translate along the guide rail, or a rotation shaft may be erected on a projecting portion extending from the peripheral edge of the bottom cover, and the rotation shaft may be mounted on the peripheral surface of the container body. It is conceivable that the bottom cover is configured to be rotatably moved by being inserted into the hollow interior of the attached hinge member and rotatably attached thereto.

In the discharging mechanism for a measuring container according to the second aspect of the present invention, after the weighing of the immersed aggregate is completed, the bottom cover is opened and the immersed aggregate is dropped and discharged. When the bottom cover is open, a gas flow is blown onto the upper surface of the bottom cover from a gas blowing mechanism provided near the bottom cover.

In this way, even if the aggregate has adhered to the upper surface of the bottom cover when the water-immersed aggregate is discharged, the aggregate is blown off by the gas flow, so that the bottom cover is used for the next measurement. Even when the container is closed, no aggregate is caught between the container body and the bottom lid.

Therefore, it is possible to prevent the occurrence of an error in the measurement due to the occurrence of water leakage from the gap caused by the aggregate being sandwiched, and to damage the sealing member provided on the container body and the bottom cover. Not even.

Here, in the discharging mechanism for the measuring container according to the first and second aspects, how the gas blowing mechanism is configured or where it is attached is arbitrary.
For example, it is conceivable that such a gas blowing mechanism is configured by an air ejection nozzle connected to an air compressor.

In the discharging mechanism of the measuring container according to the fourth aspect of the present invention, after the weighing of the immersed aggregate is completed, the bottom cover is opened and the immersed aggregate is dropped and discharged. To open the bottom cover, the bottom cover is translated or rotated in a horizontal plane, instead of rotating the bottom cover about a horizontal axis as in the related art.

As described above, in the conventional opening / closing type, when the bottom cover is opened, the bottom cover hangs down, so that it is necessary to secure a space for opening and closing the bottom cover in the height direction. In addition, there is no need to secure the opening and closing space in the height direction, and it is sufficient to secure the opening and closing space for the bottom cover only in the horizontal plane.

For this reason, the bottom opening of the container body can be lowered by the height required for opening and closing, which has been indispensable in the past, so that the container can be reliably charged into the kneading mixer.

The bottom lid may be translated or rotated in a horizontal plane. For example, a pair of parallel guide rails may be attached to the lower end of the container body.
The bottom lid may be configured to translate along the guide rail, or a rotation shaft may be erected on a projecting portion extending from the peripheral edge of the bottom cover, and the rotation shaft may be mounted on the peripheral surface of the container body. It is conceivable that the bottom cover is configured to be rotatably moved by being inserted into the hollow interior of the attached hinge member and rotatably attached thereto.

[0034]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a weighing container discharging mechanism according to an embodiment of the present invention. It is to be noted that the same reference numerals are given to components and the like that are substantially the same as those in the conventional technology, and description thereof will be omitted.

FIG. 1 is an overall view showing a measuring container discharging mechanism 21 according to the present embodiment together with a measuring device 1 to which the discharging mechanism 21 is applied, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

First, the weighing device 1 to which the discharge mechanism 21 of the weighing container according to the present embodiment is applied includes a water storage hopper 2 for storing water and a fine aggregate storage hopper for storing fine aggregate as aggregate. 3, a weighing container 11 for containing water and fine aggregate supplied from the water storage hopper 2 and the fine aggregate storage hopper 3 as immersion aggregate, and measuring the mass of the immersion aggregate in the weighing container. The water storage hopper 2 is connected to the bottom of the load cell 8 and the electrode type displacement sensor 12 for measuring the liquid level in the measuring container 11.
1 together with a water supply pipe 5 positioned above the water supply pipe 5 and an on-off valve 6 provided at a predetermined position of the water supply pipe 5, the fine aggregate storage hopper 3 has a discharge port above the measuring container 11 Aggregate supply means is constituted together with the fine aggregate supply pipe 7 positioned at the position.

The measuring container 11 comprises a container main body 4 and a bottom cover 9 which can be freely opened and closed at the bottom opening 15 of the container main body. The container main body 4 is hollow so that the inner diameter increases toward the bottom. It is formed in the shape of a truncated cone, and without using a vibrating device such as a vibrator, the water-immersed aggregate, which has been measured, does not close in the container body, and falls naturally only by opening the bottom lid 9. This can be put into a kneading mixer (not shown) together with separately measured cement and coarse aggregate. In addition, in each contact place of the bottom cover 9 and the bottom opening 15 of the container body 4,
A sealing member (not shown) is appropriately attached so that water tightness can be maintained with the container body 4 with the bottom lid 9 closed.

The volume of the measuring container 11 is arbitrary, and may be the unit required for mixing concrete, that is, the total amount necessary for one batch, or may be the volume that is premised on measuring several times.

The electrode-type displacement sensor 12 monitors the change in the energized state when the lower end of the detection electrode touches the liquid surface of the water-immersed aggregate contained in the measuring container 11 to monitor the change in the current-conveyed aggregate. Liquid level can be measured.

Water storage hopper 2, fine aggregate storage hopper 3
The load cell 8 is mounted on a stand (not shown), and the weight of the weighing container is reduced by placing the flanged annular portion 16 of the weighing container 11 on the load cell and suspending the weighing container 11. 8 can be measured. The load cell 8 is mounted, for example, on the same horizontal plane so that the measuring container 11 can be suspended and measured in a stable state.
It is desirable to provide three locations every 20 °.

On the other hand, the discharge mechanism 21 of the weighing container according to the present embodiment stores fine aggregate together with water in the weighing container 11 with the bottom cover 9 closed and water-immersed bone. While weighing the aggregate, the immersed aggregate that has been measured is
Is opened and discharged downward.

The bottom cover 9 is formed of a circular flat plate having an outer diameter substantially equal to or slightly larger than the outer diameter of the bottom opening of the container body 4, and an L extending from the periphery of the circular flat plate.
A long hole 14 is formed at the tip of the V-shaped mounting arm 13, and a pin 10 fixed to a pedestal (not shown) is inserted through the long hole 14, whereby the bottom cover 9 is rotated around the pin 10, and the container main body is rotated. 4 can be opened and closed, and when the bottom lid 9 is closed, the elongated hole 14 is in a vertical direction, so that the reaction force due to the load from the measuring container 11 is generated at the pin 10. Can be prevented. In order to fix the bottom cover 9 to the bottom opening 15 of the container main body 4, any known method such as fastening with a bolt or fastening with a clamp member may be appropriately selected.

The discharge mechanism 21 of the measuring container is provided with an air ejection nozzle 24 serving as a gas blowing mechanism connected to an air compressor 22 through a hose 23 on the L-shaped mounting arm 13 near the bottom cover 9. The nozzle is fixed to the nozzle fixing portion 25 erected in the above manner, so that an air flow can be blown from the tip of the air ejection nozzle 24 to the upper surface of the bottom lid 9 in a state where the bottom lid 9 is open. .

The weighing container discharging mechanism 21 according to the present embodiment.
In the above, after the weighing of the immersed aggregate is completed, the bottom cover 9 is opened and the immersed aggregate is dropped and discharged downward. Then, as shown in FIG. 3, the bottom cover 9 is opened. The air compressor 22 is operated to blow air from the tip of the air ejection nozzle 24 onto the upper surface of the bottom cover 9.

In this way, even if the fine aggregate adheres to the upper surface of the bottom cover 9 when the water-immersed aggregate is discharged, the fine aggregate is blown off by the air flow, so that the fine aggregate is used for the next measurement. Even if the bottom cover 9 is closed, fine aggregate is not sandwiched between the container body 4 and the bottom cover 9.

The measurement of the water-immersed aggregate may be performed in the following procedure. That is, first, the bottom opening 15 of the container body 4 is closed with the bottom lid 9 to make the inside of the measuring container 11 watertight,
In this state, the on-off valve 6 is opened to supply water from the water storage hopper 2 into the measuring container 11, and the fine aggregate stored in the fine aggregate storage hopper 3 is immersed in the measuring container. The measuring container 11 is filled with the water-immersed aggregate 31 as shown in FIG.

When the fine aggregate and the water are charged into the measuring container 11, it is preferable that water is first charged and then the fine aggregate is charged in order to suppress air bubbles from being mixed into the water-immersed aggregate 31. Also, instead of directly charging the fine aggregate from the fine aggregate storage hopper 3 to the measuring container 11, the measuring container 11 is directly below the fine aggregate storing hopper 3 using, for example, a vibration feeder having an electromagnetic vibrator. If the fine aggregate is conveyed to the upper opening, it is possible to prevent the fine aggregate from being aggregated and, consequently, from being mixed with bubbles.

Next, the liquid level of the immersion aggregate 31 is measured by the electrode type displacement sensor 12, and the total volume V of the immersion aggregate 31 is determined from the liquid level.
While measuring _f , the total mass _Mf of the water-immersed aggregate 31 is measured by the load cell 8. The total mass _Mf of the water-immersed aggregate 31 may be obtained by subtracting the mass of the empty measuring container 11 in which the water-immersed aggregate 31 is not stored from the value measured by the load cell 8.

Next, the measured total mass M of the water-immersed aggregate 31
calculating the mass M _a and mass M _w of water-dry state of fine aggregate using the following equation from _f and total volume V _f. M _a + M _w = M _f (1) M _a / p _a + M _w / p _w = V _f (2)

Here, ρ _a represents the density of the fine aggregate in the surface dry state, and ρ _w represents the density of water.

[0051] If the mass M _a of the thus fine aggregate mass M _w and-dry state of the water was calculated measured, then supplemented by comparing appropriate with the amount of those indicated in How to Display formulation The shortage to be measured is weighed and added to the above-mentioned water-immersed aggregate 31 to obtain a concrete material. If there is too much water, the excess may be sucked by vacuum or the like.

As described above, according to the discharge mechanism 21 of the measuring container according to the present embodiment, the air compressor 22 is operated with the bottom cover 9 opened, and the bottom cover 9 is moved from the tip of the air ejection nozzle 24. By blowing an air flow onto the upper surface of the bottom cover, the fine aggregate attached to the upper surface of the bottom cover 9 at the time of discharging the water-immersed aggregate is blown off by the air flow. At the time of closing, there is no possibility that fine aggregate is caught between the container body 4 and the bottom cover 9.

Therefore, it is possible to prevent the occurrence of an error in the measurement due to the occurrence of water leakage from the gap caused by the fine aggregate being sandwiched, and to prevent the sealing member provided on the container body 4 and the bottom cover 9 from being leaked. No damage.

[0054] In this embodiment, while applying a discharge mechanism of the weighing container according to the present invention the metering device 1 measures the total mass M _f and the total volume V _f of the aggregate 31 inundation with metering device While the metering method for calculating the mass M _a and mass M _w of water-dry state of fine aggregate by using such a measured value (1) and (2) shown as an example, according to the present invention The discharge mechanism of the weighing container is characterized in that a gas flow is blown from the gas blowing mechanism to the upper surface of the bottom cover in a state where the bottom cover is opened, and the bottom cover is provided at the bottom opening of the container body. The apparatus can be applied to any measuring apparatus as long as the apparatus is capable of weighing the immersed aggregate by storing the immersed aggregate in a weighing container having a freely openable and closable attachment. Is arbitrary.

For example, the total volume _Vf of the water-immersed aggregate is configured so as to maintain a constant water level in the measuring container by overflowing or suctioning without measuring it. The total volume _{Vf of the} aggregate can be treated as known.

The total mass _Mf of the immersed aggregate can be determined by measuring the water supply / drainage amount of water and the mass of the added aggregate (wet state) without directly measuring the mass of the immersed aggregate. Can be obtained indirectly.

In the present embodiment, the air ejection nozzle 2
4, an air compressor 22 is connected and connected, and air is fed from the air compressor so that air is ejected from the tip of the air ejection nozzle 24. However, the invention is not necessarily limited to the air compressor 22, Any configuration is possible as long as it is possible. For example, a cylinder pressurized and filled with nitrogen may be used instead of the air compressor 22.

In this embodiment, fine aggregate is used as the aggregate, but it is needless to say that the present invention can be applied to coarse aggregate.

(Second Embodiment)

Next, a mechanism for discharging the measuring container according to the second embodiment will be described. Note that components that are substantially the same as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted. In particular, also in the present embodiment, a case in which the present invention is applied to the weighing device 1 will be described as an example, and a detailed description of the weighing device 1 and a weighing method using the same will be omitted here.

FIG. 5 is a view showing a weighing container discharging mechanism 41 according to the second embodiment. As can be seen from the figure, the discharge mechanism 41 of the weighing container according to the present embodiment
It is assumed that a weighing container 43 comprising a bottom cover 42 that can be freely opened and closed to the bottom opening 15 of the container body is used. Aggregate is contained in the weighing container 43 with the bottom cover closed. The fine aggregate is accommodated together with water as a water immersed aggregate, the water immersed aggregate is weighed, and the weighed water immersed aggregate is discharged downward by opening the bottom lid 42. .

The bottom lid 42 is formed of a circular flat plate having an outer diameter substantially equal to or slightly larger than the outer diameter of the bottom opening of the container body 4.
4 is extended.

Here, a rotating shaft 45 is erected on the protruding portion 44, and the rotating shaft is protruded from the peripheral surface of the container body 4 in the horizontal direction. After being inserted into the inside, the head of the rotating shaft 45 is fastened with a nut 47. With this configuration, the discharge mechanism 41 of the weighing container according to the present embodiment locks the nut 47 with the upper hinge member 46. The bottom cover 42 can be opened and closed by rotating the bottom cover around a vertical axis, in other words, in a horizontal plane, while supporting the weight of the bottom cover 42 by the action.

The discharging mechanism 41 of the measuring container according to the present embodiment.
In the above, after the weighing of the immersed aggregate is completed, the bottom cover 42 is opened to drop and discharge the immersed aggregate downward.
In opening the bottom cover, instead of rotating the bottom cover around the horizontal axis as in the first embodiment, the bottom cover 42 is rotated and moved in a horizontal plane, and then the immersion aggregate in the measuring container 43 is dropped. Let it drain.

That is, first, the bottom cover 42 is rotated and moved in the horizontal plane to the side of the container body 4, and thereafter, the bottom opening 15 of the container body 4 is closed with the bottom cover to be in a watertight state. After the measurement of the aggregate, the bottom lid 42 is rotated in the opposite direction in the horizontal plane, and then the water-immersed aggregate in the measuring container 43 is dropped downward and put into the kneading mixer.

As described above, according to the discharge mechanism 41 of the measuring container according to the present embodiment, in the conventional open / close type,
When the bottom cover is opened, the bottom cover hangs down, so that it is necessary to secure a space for opening and closing the bottom cover between the bottom cover and the kneading mixer. Since it is made to rotate, it is not necessary to secure an opening and closing space in the height direction with the kneading mixer, and it is sufficient to secure the opening and closing space for the bottom cover only in the horizontal plane.

For this reason, it is possible to lower the bottom opening 15 of the container body 4 to just above the inlet of the kneading mixer by the height required for opening and closing, which has been indispensable in the past. Can be reliably fed into the kneading mixer.

In the present embodiment, as in the first embodiment, the discharging mechanism of the measuring container according to the present invention is applied to the weighing device 1, but the discharging mechanism of the measuring container according to the present invention translates the bottom lid in a horizontal plane. It is characterized in that the bottom lid is opened and closed by moving or rotating the water-immersed aggregate in a measuring container having the bottom lid openably and closably attached to the bottom opening of the container body. As long as it is a device that can accommodate and measure the water-immersed aggregate, it can be applied to any measuring device and its measuring method is optional.
This is the same as the first embodiment.

In this embodiment, fine aggregate is used as the aggregate. However, it goes without saying that the present invention can be applied to coarse aggregate.

(Third Embodiment)

Next, the discharge mechanism of the measuring container according to the third embodiment will be described. Note that the same reference numerals are given to components and the like that are substantially the same as those of the first and second embodiments, and description thereof will be omitted. In particular, also in the present embodiment, a case in which the present invention is applied to the weighing device 1 will be described as an example, and a detailed description of the weighing device 1 and a weighing method using the same will be omitted here.

FIG. 6 is a diagram showing a discharge mechanism 51 of the measuring container according to the third embodiment. As can be seen from the figure, the discharge mechanism 51 of the measuring container according to the present embodiment
It is assumed that a weighing container 43 comprising a bottom cover 42 that can be freely opened and closed to the bottom opening 15 of the container body is used. Aggregate is contained in the weighing container 43 with the bottom cover closed. The fine aggregate is accommodated together with water as a water immersed aggregate, the water immersed aggregate is weighed, and the weighed water immersed aggregate is discharged downward by opening the bottom lid 42. .

The bottom lid 42 is formed of a circular flat plate having an outer diameter substantially equal to or slightly larger than the outer diameter of the bottom opening of the container body 4.
4 is extended.

Here, a rotating shaft 45 is erected on the projecting portion 44, and the rotating shaft is protruded in the horizontal direction on the peripheral surface of the container body 4, and the two-stage hinge members 46, 46 are hollow. After being inserted inside, the head of the rotating shaft 45 is fastened with a nut 47. With this configuration, the discharge mechanism 51 of the measuring container according to the present embodiment locks the nut 47 with the upper hinge member 46. The bottom cover 42 can be opened and closed by rotating the bottom cover around a vertical axis, in other words, in a horizontal plane, while supporting the weight of the bottom cover 42 by the action.

The discharge mechanism 51 of the measuring container according to the present embodiment is connected to the air compressor 22 through the hose 23.
The air jet nozzle 24 as a gas blowing mechanism connected to the bottom lid 42 is fixed to the side of the lower hinge member 46 protruding horizontally from the container body 4 at a position near the bottom lid 42. With the opening 42 open, an air flow can be blown from the tip of the air ejection nozzle 24 to the upper surface of the bottom lid 42.

The measuring container discharging mechanism 51 according to the present embodiment.
In the above, after the weighing of the immersed aggregate is completed, the bottom cover 42 is opened to drop and discharge the immersed aggregate downward.
In opening the bottom cover, instead of rotating the bottom cover around the horizontal axis as in the first embodiment, the bottom cover 42 is rotated and moved in a horizontal plane, and then the immersion aggregate in the measuring container 43 is dropped. Let it drain.

That is, first, the bottom cover 42 is rotationally moved in the horizontal plane to the side of the container body 4, and thereafter, the bottom opening 15 of the container body 4 is closed with the bottom cover to make it watertight. After the measurement of the aggregate, the bottom lid 42 is rotated in the opposite direction in the horizontal plane, and then the water-immersed aggregate in the measuring container 43 is dropped downward and put into the kneading mixer.

Next, as shown in FIG. 7, the air compressor 22 is operated with the bottom lid 42 opened, and an air flow is blown from the tip of the air ejection nozzle 24 onto the upper surface of the bottom lid 42.

In this way, even if the fine aggregate is attached to the upper surface of the bottom lid 42 when the water-immersed aggregate is discharged, the fine aggregate is blown off by the air flow, so that the fine aggregate is used for the next measurement. Even if the bottom cover 42 is closed, the fine aggregate is not sandwiched between the container body 4 and the bottom cover 42.

As described above, according to the discharge mechanism 51 of the measuring container according to the present embodiment, in the conventional open / close type,
When the bottom cover is opened, the bottom cover hangs down, so that it is necessary to secure a space for opening and closing the bottom cover between the bottom cover and the kneading mixer. Since it is made to rotate, it is not necessary to secure an opening and closing space in the height direction with the kneading mixer, and it is sufficient to secure the opening and closing space for the bottom cover only in the horizontal plane.

For this reason, the bottom opening 15 of the container body 4 can be lowered to just above the inlet of the kneading mixer by the opening and closing height which has been indispensable in the past, and the water-impregnated aggregate that has been measured is completed. Can be reliably fed into the kneading mixer.

Further, according to the discharge mechanism 51 of the measuring container according to the present embodiment, the air compressor 22 is operated with the bottom cover 42 opened, and air is applied from the tip of the air ejection nozzle 24 to the upper surface of the bottom cover 42. Since the fine aggregate attached to the upper surface of the bottom lid 42 was blown off by the air flow when the water-immersed aggregate was discharged by blowing the flow, when closing the bottom lid 42 for the next measurement, the container There is no fear that fine aggregate is caught between the main body 4 and the bottom lid 42.

Therefore, it is possible to prevent the occurrence of an error in the measurement due to the occurrence of water leakage from the gap caused by the fine aggregate being sandwiched, and to prevent the sealing member provided on the container body 4 and the bottom cover 42 from being leaked. No damage.

In the present embodiment, as in the first and second embodiments, the discharging mechanism of the measuring container according to the present invention is applied to the weighing device 1. However, the discharging mechanism of the measuring container according to the present invention has The bottom cover is configured to be opened and closed by being translated or rotated within, and a gas blowing mechanism is provided near the bottom cover, and the bottom cover is moved from the gas blowing mechanism in a state where the bottom cover is open. It is characterized in that a gas flow is blown on the upper surface of the container. The water-immersed aggregate is accommodated in a measuring container having a bottom lid attached to the bottom opening of the container body so as to be openable and closable. It is the same as the first and second embodiments that the apparatus can be applied to any measuring apparatus as long as it can measure the infiltrated material, and that the measuring method is arbitrary.

In this embodiment, fine aggregate is used as the aggregate. However, it goes without saying that the present invention can be applied to coarse aggregate.

[0086]

As described above, according to the weighing container discharging mechanism of the first aspect of the present invention, it is possible to prevent the occurrence of an error in weighing due to the occurrence of water leakage from the gap caused by the pinch of the aggregate. And the seal member provided on the container body and the bottom lid is not likely to be damaged.

According to the weighing container discharging mechanism of the present invention, it is possible to prevent the occurrence of an error in weighing due to water leakage from a gap caused by the aggregate being sandwiched. At the same time, there is no danger of damaging the sealing member provided on the container body and the bottom cover, and the bottom opening of the container body is inserted into the inlet of the kneading mixer by the height required for opening and closing the bottom cover, which was indispensable in the past. Of the water-immersed aggregate that has been measured can be reliably fed into the kneading mixer.

According to the fourth aspect of the present invention, the bottom opening of the container main body is set at the inlet of the kneading mixer by the height required for opening and closing the bottom lid, which has been indispensable in the past. Of the water-immersed aggregate that has been measured can be reliably fed into the kneading mixer.

[0089]

[Brief description of the drawings]

FIG. 1 is an overall view of a measuring container discharging mechanism according to a first embodiment and a measuring device to which the discharging mechanism is applied.

FIG. 2 is a vertical sectional view taken along line AA of FIG.

FIG. 3 is a view showing the operation of the discharge mechanism of the measuring container according to the first embodiment.

FIG. 4 is a view showing a state in which the immersion aggregate is measured using the weighing device 1.

5A and 5B are diagrams of a discharge mechanism of a measuring container according to a second embodiment, in which FIG. 5A is a side view, and FIG. 5B is a horizontal cross-sectional view along line BB.

FIG. 6 is an overall view of a measuring container discharging mechanism according to a third embodiment.

FIG. 7 is a view showing the operation of a discharge mechanism for a measuring container according to a third embodiment.

[Explanation of symbols]

4 Container main body 9, 42 Bottom lid 11, 43 Measuring container 15 Bottom opening 21, 41, 51 Discharge mechanism of measuring container 24 Air ejection nozzle (gas blowing mechanism)

Claims (4)

[Claims] An aggregate is stored together with water as water-immersed aggregate in a measuring container having a predetermined bottom lid openably and closably attached to a bottom opening of a container body with the bottom lid closed. A discharging mechanism of a measuring container configured to measure the infiltrated aggregate and discharge the water-infiltrated aggregate that has been measured by opening the bottom lid and discharging the gas downward, wherein gas is blown in the vicinity of the bottom lid. A mechanism for discharging a weighing container, wherein a mechanism is provided, and a gas flow is blown from the gas blowing mechanism to an upper surface of the bottom cover when the bottom cover is open. 2. An aggregate containing water as an immersed aggregate in a weighing container having a predetermined bottom lid openably and closably attached to a bottom opening of a container body with the bottom lid closed. A discharging mechanism for a weighing container configured to measure the infiltrated aggregate and discharge the weighed water-infiltrated aggregate by opening the bottom cover and discharging the bottom cover downward, wherein the bottom cover is translated in a horizontal plane. Or configured to open and close the bottom cover by rotating, and provided a gas blowing mechanism near the bottom cover,
A discharging mechanism for a measuring container, wherein a gas flow is blown from the gas blowing mechanism to an upper surface of the bottom cover in a state where the bottom cover is opened. 3. The air blowing mechanism according to claim 1, wherein said gas blowing mechanism comprises an air jet nozzle connected to an air compressor.
Or the discharge mechanism of the measuring container according to claim 2. 4. An aggregate containing water as an immersed aggregate in a weighing container having a predetermined bottom lid openably and closably attached to a bottom opening of the container body with the bottom lid closed. A discharging mechanism for a weighing container configured to measure the infiltrated aggregate and discharge the weighed water-infiltrated aggregate by opening the bottom cover and discharging the bottom cover downward, wherein the bottom cover is translated in a horizontal plane. Alternatively, the bottom cover is opened and closed by rotating the container.