JP2005186349A - Kneader of ready-mixed concrete and csg - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture both CSG and ready-mixed concrete by one apparatus to efficiently mass-produce CSG of high quality without relying on an on-the-spot occurring material. <P>SOLUTION: This kneader is equipped with a mixer 1, a plurality of aggregate storage tanks 2 for temporarily storing aggregates different in size and the on-the-spot occurring material, an on-the-spot occurring material storage tank 5, a supply conveyor 3 and a distributor 4 both of which supply the aggregates to the aggregate storage tanks 2 and supply the on-the-spot occurring material to the on-the-spot occurring material storage tank 5, a supply duct 8 for supplying the aggregate discharged from the aggregate storage tanks 2 and the on-the-spot occurring material discharged from the on-the-spot occurring material storage tank 5 and a cement supply device 6 for supplying cement to the mixer 1. The kneader is constituted so that the aggregate is supplied to the mixer 1 from the aggregate storage tank 2 to knead the ready-mixed concrete and the on-the-spot occurring material is supplied to the mixer 1 from the on-the-spot occurring material storage tank 5 to knead CSG. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an apparatus capable of kneading both CSG that effectively uses locally generated materials and ready-mixed concrete that uses specific aggregates.

  Non-fluid concrete such as CSG and RCD is often used for concrete structures such as dams. CSG is a non-flowable concrete made by mixing cement with local materials generated by excavating a dam construction site, and has the advantage that it can be used effectively without discarding the local materials. RCD is an abbreviation for roller-compacted dam. It is a mixture of selected aggregate and cement.

Since non-flowable concrete such as CSG and RCD and ready-mixed concrete are used in concrete structures such as dams, the amount used is extremely large. For this reason, the apparatus which knead | mixes CSG, RCD, and ready-mixed concrete is requested | required of very big processing capacity. CSG can effectively use locally generated materials, but in many cases, it is difficult to construct a concrete structure with only CSG. For example, the interior of a concrete structure such as a dam constructed with ready-mixed concrete is constructed with CSG. In the case of ready-mixed concrete, there are times when CSG is supplied to the site and ready-mixed concrete is supplied. For example, the concrete structure is constructed by switching between morning and afternoon, supplying CSG and ready-mixed concrete, supplying CSG one day, and supplying ready-made concrete the next day. At this time, in a construction site that requires CSG and ready-mixed concrete, a plant for kneading ready-mixed concrete and a dedicated plato for kneading CSG are installed at the work site. A CSG production plant has been developed. (See Patent Document 1)
Japanese Patent Laid-Open No. 11-60314

  This publication describes a CSG manufacturing plant in which cement and water are added to a locally generated material and kneaded. At construction sites such as dams, CSG and ready-mixed concrete are installed as two very large plants consisting of a plant that produces CSG from locally generated materials and a ready-mixed concrete manufacturing plant as described in this publication. Need to supply. CSG is made by adding cement to the locally generated material and kneaded, and ready-mixed concrete is made by adding cement to the aggregate and kneaded, but the kneaded state is considered to be considerably different. CSG is simply kneaded by adding cement to the locally generated material, while ready-mixed concrete is required to be sufficiently kneaded by adding cement and aggregate. In this way, CSG and ready-mixed concrete with considerably different physical properties are manufactured by dedicated equipment, but this kind of plant used for dam construction is extremely large, so two of them are installed. In addition, the equipment cost is extremely high. Also, since CSG and ready-mixed concrete are kneaded in separate dedicated plants, the equipment for transporting CSG and ready-mixed concrete from each plant to the construction site becomes complicated, and there is a disadvantage that it cannot be transferred efficiently with simple equipment. is there.

  The present invention has been developed for the purpose of solving such drawbacks. A first object of the present invention is to provide a kneading apparatus for ready-mixed concrete and CSG that can efficiently adjust and supply both CSG and ready-mixed concrete with a single device.

  Furthermore, CSG uses locally generated materials as aggregates, but the properties of the locally generated materials, such as particle size distribution, differ significantly depending on the construction site. For this reason, CSG has a drawback that it is difficult to maintain physical properties such as strength at a certain quality. In particular, since a CSG is produced by adding cement and water to a locally generated material and kneading them with a dedicated device in the past, this device may not be able to produce a CSG with excellent quality depending on the locally generated material. .

  The present invention was further developed with the object of solving this drawback. The second object of the present invention is that of the ready-mixed concrete and CSG that can produce more uniform CSG regardless of the quality of the locally generated material. It is to provide a kneading apparatus.

  The mixing apparatus for ready-mixed concrete and CSG of the present invention includes a mixer 1, a plurality of aggregate storage tanks 2 for temporarily storing aggregates having different sizes, and a locally generated material storage tank 5 for temporarily storing locally generated materials. The supply conveyor 3 and the distribution device 4 for supplying aggregate to the aggregate storage tank 2 and the locally generated material to the locally generated material storage tank 5, and the aggregate discharged from the aggregate storage tank 2 and the locally generated material storage tank 5 is provided with a supply duct 8 for supplying locally generated material discharged from 5 to the mixer 1, and a cement supply device 6 for supplying cement to the mixer 1. The mixer 1 kneads aggregate and cement to make ready-mixed concrete, or kneads locally generated material and cement to make CSG. The plurality of aggregate storage tanks 2 are disposed above the mixer 1, temporarily store aggregates having different sizes, and supply the aggregate 1 to the mixer 1. The locally generated material storage tank 5 is disposed adjacent to the aggregate storage tank 2 and above the mixer 1 to temporarily store the locally generated material and supply it to the mixer 1. The supply conveyor 3 supplies the locally generated material to the locally generated material storage tank 5 and supplies the aggregate to the aggregate storage tank 2. The distribution device 4 is connected to the discharge side of the supply conveyor 3, and supplies the aggregate and the locally generated material supplied by the supply conveyor 3 to each aggregate storage tank 2 and the locally generated material storage tank 5. The supply duct 8 is disposed below the aggregate storage tank 2 and the locally generated material storage tank 5, and the aggregate discharged from the aggregate storage tank 2 and the locally generated material discharged from the locally generated material storage tank 5. Is fed to the mixer 1.

  In this kneading apparatus, the supply conveyor 3 supplies aggregates having different sizes to the aggregate storage tanks 2 via the distribution apparatuses 4 and temporarily stores them in the aggregate storage tanks 2. The locally generated material is supplied to the locally generated material storage tank 5 and temporarily stored in the locally generated material storage tank 5. Further, the kneading apparatus supplies the aggregate discharged from the aggregate storage tank 2 and the locally generated material discharged from the locally generated material storage tank 5 to the mixer 1 through the supply duct 8. Select and mix both ready-mixed concrete and CSG.

  The kneading apparatus of the present invention can be provided on the discharge side of the aggregate storage tank 2 with a measuring instrument 15 for measuring the weight of the aggregate supplied to the mixer 1 via the supply duct 8. Moreover, the kneading apparatus of the present invention can be provided with a measuring device 16 for measuring the weight of the locally generated material supplied to the mixer 1 via the supply duct 8 on the discharge side of the locally generated material storage tank 5.

  Furthermore, the kneading apparatus of the present invention comprises 2 to 6 aggregate storage tanks 2 for storing 2 to 6 types of aggregates of different sizes, and 1 to 2 locally generated material storage tanks 5. Can be provided.

  Further, the kneading apparatus of the present invention is connected to the supply conveyor 3 with a drawer conveyor 21 that supplies aggregate and locally generated material, and the drawer conveyor 21 stores aggregate aggregate silo 22 and locally generated material. Can be connected to the locally generated silo 23. In this kneading apparatus, aggregate stored in the aggregate silo 22 is supplied to the aggregate storage tank 2 by the draw conveyor 21, the supply conveyor 3 and the distribution device 4, and the locally generated material stored in the locally generated material silo 23 is extracted. Then, the material is supplied to the locally generated material storage tank 5 by the supply conveyor 3 and the distribution device 4.

  Furthermore, in the kneading apparatus of the present invention, the mixer 1 can include a timer for storing the kneading time of the ready-mixed concrete and the kneading time of the CSG. This timer can set the kneading time of ready-mixed concrete to 40 to 80 seconds and the kneading time of CSG to 7 to 15 seconds.

  The mixing apparatus for ready-mixed concrete and CSG of the present invention is characterized in that both ready-mixed concrete and CSG can be efficiently adjusted and supplied by a single device. The kneading apparatus of the present invention includes a mixer for kneading aggregates and locally generated materials with cement, and an aggregate storage tank for temporarily storing aggregates and locally generated materials supplied from a supply conveyor and supplying them to the mixer. And the locally generated material storage tank, the aggregate and cement supplied from the aggregate storage tank are mixed with a mixer to supply ready-mixed concrete, and the locally generated material supplied from the locally generated material storage tank This is because cement is kneaded with a mixer to supply CSG. When supplying ready-mixed concrete, this kneading device supplies the aggregate from the aggregate storage tank to the mixer and kneads it with cement. When supplying CSG, the local generated material supplied from the locally generated material storage tank. Is mixed with cement, and the aggregate of a specific particle size stored in the aggregate storage tank is supplied to the mixer to the locally generated material and kneaded with cement. Therefore, both ready-mixed concrete and CSG can be efficiently adjusted and supplied by a single device, and the equipment cost can be reduced. In addition, since the raw concrete and the CSG are kneaded by a single device, the device for transporting to the construction site can be simplified and transported efficiently.

  Furthermore, the kneading apparatus of the present invention has an advantage that it can efficiently produce a large amount of CSG having excellent characteristics in a short time regardless of the quality of the locally generated material. The kneading apparatus of the present invention is arranged such that the aggregate storage tank and the locally generated material storage tank are disposed adjacent to each other, and the aggregate discharged from the aggregate storage tank and the locally generated material storage tank are discharged. This is because the locally generated material is supplied to the mixer via the supply duct. In the kneading apparatus having this structure, when the quality of the locally generated material is particularly bad, an aggregate having a specific particle size can be added to the locally generated material while being mixed to obtain a high quality CSG. When supplying locally generated material and aggregate of a specific particle size to the mixer, the aggregate discharged from the aggregate storage tank and the locally generated material discharged from the locally generated material storage tank are mixed in the supply duct. This is because it can be supplied to the mixer. The mixer that is supplied in a state where the locally generated material and the aggregate are mixed and uniformly dispersed can be of high quality while shortening the kneading time.

  Embodiments of the present invention will be described below with reference to the drawings. However, the example shown below illustrates the kneading apparatus for embodying the technical idea of the present invention, and the present invention does not specify the kneading apparatus as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The kneading apparatus for ready-mixed concrete and CSG shown in FIG. 1 kneads aggregate and cement to make ready-mixed concrete, and kneads locally generated material and cement to make CSG, or the quality of locally generated material is poor. For garlic, add aggregate to locally generated material to make CSG. The kneading apparatus includes a mixer 1 for kneading ready-mixed concrete or CSG, and a plurality of aggregate reservoirs disposed above the mixer 1 for temporarily storing aggregates of different sizes and supplying the mixer 1 with the aggregates. A tank 2, a locally generated material storage tank 5 that is disposed above the mixer 1 adjacent to the aggregate storage tank 2, temporarily stores the locally generated material and supplies it to the mixer 1, and the locally generated material storage tank Supply conveyor 3 that is inclined upwardly toward the locally generated material storage tank 5 and the aggregate storage tank 2 so that the locally generated material is supplied to the tank 5 and the aggregate is supplied to the aggregate storage tank 2. And a distribution device 4 connected to the discharge side of the supply conveyor 3 and switching and supplying the locally generated material and aggregate supplied by the supply conveyor 3 to the locally generated material storage tank 5 and each aggregate storage tank 2. And disposed below the aggregate storage tank 2 and the locally generated material storage tank 5. A supply duct 8 for supplying the aggregate discharged from the aggregate storage tank 2 and the locally generated material discharged from the locally generated material storage tank 5 to the mixer 1, and a cement supply device 6 for supplying cement to the mixer 1. It has. In the illustrated apparatus, the supply conveyor 3 is arranged so as to incline in an upward gradient, but the supply conveyor may be installed in a substantially horizontal posture or in a downward gradient depending on the installation site.

  The mixer 1 switches between ready-mixed concrete and CSG and kneads one of them. That is, ready concrete is kneaded in some cases, and CSG is kneaded in other cases. The mixer 1 is a batch type mixer or a continuous type mixer. The mixer 1 can be of any mechanism that is already used or will be developed. The batch-type mixer shown in the figure includes a container 10 having a supply port 10A opened above, and a stirring blade 12 that stirs aggregate, locally generated material, cement, water, and the like inside the container 10. The stirring blade 12 is rotated by a rotating mechanism 11 such as a motor. However, the mixer can stir the contents by rotating the container with a rotating mechanism, or can stir by rotating both the container and the stirring blade. The container 10 is provided with a discharge port 14 with a gate for supplying kneaded ready-mixed concrete and CSG at the lower part thereof. The mixer 1 opens the gate 13 and discharges the kneaded ready-mixed concrete and CSG. Although not shown, the continuous mixer includes, for example, a vertical cylinder arranged in a vertical posture, and a nozzle that injects water into the vertical cylinder. The vertical cylinder is provided with an agitation blade and an agitation rod for kneading aggregate, locally generated material, cement, and cement supplied to the inside. The stirring blade rotates to knead the aggregate or cement to be supplied, and the stirring rod does not rotate, but the aggregate and cement collide with it to knead. In this continuous mixer, aggregate, locally generated material, and cement are dropped from above into a vertical cylinder and kneaded during the dropping. The kneaded ready-mixed concrete and CSG are discharged from the lower end of the vertical cylinder.

  Although not shown, the mixer has a built-in timer for storing the mixing time of the ready-mixed concrete and the mixing time of the CSG. This timer stores raw concrete with a kneading time of 40 to 80 seconds, preferably 60 seconds, and a CSG kneading time of 7 to 15 seconds, preferably 10 seconds.

  The aggregate storage tank 2 temporarily stores aggregates having different particle sizes. The kneading apparatus in FIG. 1 includes three aggregate storage tanks 2. This device stores aggregates in three different particle sizes. However, the kneading apparatus of the present invention can store 2-6 aggregates by using 2-6 aggregate storage tanks. The kneading apparatus shown in the figure divides the interior of one storage tank 7 into five, and is provided with three aggregate storage tanks 2 and two locally generated material storage tanks 5. However, the kneading apparatus can also constitute a plurality of aggregate storage tanks and a locally generated material storage tank with a plurality of storage tanks. The aggregate storage tank 2 is provided with an aggregate supply port 2 </ b> A at the top, an aggregate discharge port 2 </ b> B that can be opened and closed at the lower end, and the discharge port 2 </ b> B is opened to discharge the aggregate from the aggregate storage tank 2. .

  Furthermore, the aggregate storage tank 2 is provided with a measuring device 15 for detecting the amount of aggregate discharged from the discharge port 2B and supplying a certain amount of aggregate to the mixer 1 at the lower end. The measuring device 15 measures the weight of the aggregate and supplies it to the mixer 1. The measuring instrument 15 includes a measuring tank 15A and a weighing scale (not shown). The measuring device 15 controls the opening and closing of the discharge port 2 </ b> B provided at the lower end of the aggregate storage tank 2 to measure a certain amount of aggregate and supply it to the mixer 1. The measuring device 15 closes the opening / closing mechanism 15B at the lower end, opens the discharge port 2B of the aggregate storage tank 2, and measures the weight of the aggregate filled in the measurement tank 15A. close up. Thereafter, the opening / closing mechanism 15 </ b> B provided at the lower end is opened, and the measured aggregate is supplied to the mixer 1. The above measuring device 15 measures the weight of the aggregate and supplies the aggregate of a constant weight to the mixer. However, the measuring device 15 measures the volume of the aggregate and the aggregate, and supplies the aggregate of the fixed volume to the mixer. You can also.

  The locally generated material storage tank 5 temporarily stores locally generated material. The kneading apparatus of FIG. 1 includes two locally generated material storage tanks 5. This apparatus supplies the locally generated material from the two locally generated material storage tanks 5 to the mixer 1 together. Since the device having a plurality of locally generated material storage tanks 5 supplies the locally generated material from the plurality of locally generated material storage tanks 5 to the mixer, the time for measuring and supplying the locally generated material is shortened, and the cycle time is reduced. Can be shortened. However, the kneading apparatus of the present invention can have one locally generated material storage tank, or three or more. The locally generated material storage tank 5 is provided with a locally generated material supply port 5A at the top and a locally generated material discharge port 5B that can be opened and closed at the lower end. The generated material is discharged.

  Further, the locally generated material storage tank 5 includes a measuring device 16 at the lower end for detecting the amount of locally generated material discharged from the discharge port 5B and supplying a certain amount of locally generated material to the mixer. The measuring device 16 measures the weight of the locally generated material and supplies it to the mixer 1. The measuring instrument 16 includes a measuring tank 16A and a weighing scale (not shown). The measuring device 16 controls the opening and closing of the discharge port 5 </ b> B provided at the lower end of the locally generated material storage tank 5 to measure a certain amount of locally generated material and supply it to the mixer 1. The measuring device 16 closes the opening / closing mechanism 16B at the lower end, opens the discharge port 5B of the locally generated material storage tank 5, and measures the weight of the locally generated material filled in the measuring tank 16A. Close 5B. Thereafter, the opening / closing mechanism 16 </ b> B provided at the lower end is opened, and the measured locally generated material is supplied to the mixer 1. The above measuring device 16 measures the weight of the locally generated material and supplies a constant weight of the locally generated material to the mixer 1, but the measuring instrument measures the volume of the locally generated material and determines the constant volume of locally generated material. Can also be fed to the mixer.

  The supply conveyor 3 is a belt conveyor that supplies aggregate to the aggregate storage tank 2 and locally generated material to the locally generated material storage tank 5. However, the supply conveyor is a conveyor other than the belt conveyor, and all other conveyors that can transfer aggregates and locally generated materials can be used. The supply conveyor 3 shown in the figure is a belt conveyor disposed toward the aggregate storage tank 2 and the locally generated material storage tank 5, and the aggregate and the locally generated material supplied to the right side in the figure are used as the aggregate storage tank 2 and the local storage tank. The generated material storage tank 5 is supplied. The supply conveyor 3 conveys the aggregate and the locally generated material having different particle sizes in a time-sharing manner, i.e., changing the transfer time.

  Aggregate having a different particle size from the locally generated material transferred by the supply conveyor 3 is distributed and supplied to the locally generated material storage tank 5 and each aggregate storage tank 2 by the distribution device 4. The distribution device 4 supplies the locally generated material and the aggregate transferred by the supply conveyor 3 by switching between the locally generated material storage tank 5 and the aggregate storage tank 2. The distribution device 4 includes a chute 17 that rotates in a horizontal plane, and a drive mechanism 18 that rotates the chute 17. The chute 17 connects the supply side to the discharge side of the supply conveyor 3. The discharge side of the chute 17 is rotated by the drive mechanism 18 and connected to the supply port 5A of the locally generated material storage tank 5 or the supply port 2A of the aggregate storage tank 2. The distribution device 4 supplies the locally generated material and aggregate supplied from the supply conveyor 3 with the chute 17 to the specific locally generated material storage tank 5 and the aggregate storage tank 2. The drive mechanism 18 rotates the chute 17 from the discharge side of the chute 17 so that the aggregate can be supplied to the supply port 5A of the locally generated material storage tank 5 and the supply port 2A of each aggregate storage tank 2.

  In the distribution device 4, for example, when the supply conveyor 3 transfers the locally generated material, and then transfers the aggregate in order from the aggregate having the larger particle size, the drive mechanism 18 first stores the locally generated material storage on the discharge side of the chute 17. Move to the supply port 5A of the tank 5. In this state, the supply conveyor 3 transports the locally generated material, and the locally generated material is supplied to the locally generated material storage tank 5 by a distribution device. Thereafter, the chute 17 of the distribution device 4 is moved to the supply port 2A of the first aggregate storage tank 2 that stores the largest aggregate. In this state, when the supply conveyor 3 conveys the largest aggregate, the aggregate is supplied to the first aggregate storage tank 2 via the chute 17. Thereafter, in order to supply the aggregate of the next size to the aggregate storage tank 2, the drive mechanism 18 switches the discharge side of the chute 17 to the supply port 2 </ b> A of the second aggregate storage tank 2. When the supply conveyor 3 transfers the aggregate in this state, the transferred aggregate is supplied to the second aggregate storage tank 2 via the chute 17. As described above, the aggregate different in size from the locally generated material is transferred by the supply conveyor 3, and the discharge side of the chute 17 is sequentially supplied to the supply port 5 </ b> A of the locally generated material storage tank 5 and the aggregate storage tank 2. Switching to the mouth 2A, the locally generated material is stored in the locally generated material storage tank 5, and the aggregate having different particle sizes is stored in the aggregate storage tank 2.

  The supply duct 8 is a duct that supplies the aggregate discharged from the aggregate storage tank 2 and the locally generated material discharged from the locally generated material storage tank 5 to the mixer 1. The kneading apparatus shown in the figure is provided with a supply duct 8 at the bottom of a storage tank 7 in which a locally generated material storage tank 5 and an aggregate storage tank 2 are provided. The supply duct 8 has a taper shape in which the bottom surface of the storage tank 7 is inclined downward toward the discharge port 8A, and the locally generated material and the aggregate discharged from the locally generated material storage tank 5 and the aggregate storage tank 2 are collected. The product is discharged from the discharge port 8A and supplied to the mixer 1. The discharge port 8 </ b> A is located above the mixer 1 and drops the locally generated material and aggregate to be discharged into the mixer 1.

  The cement supply device 6 supplies a predetermined amount of cement to the mixer 1. The cement supply device 6 shown in the figure is provided with a temporary cement storage tank 20 above the mixer 1, stores the cement in the temporary storage tank 20, and supplies the cement to the mixer 1. However, the cement supply device can also supply a predetermined amount of cement directly to the mixer without providing a temporary storage tank.

  Furthermore, a predetermined amount of water is supplied to the mixer 1 by a water supply device (not shown). When the mixer 1 kneads CSG, the amount of water and cement added is reduced to make it non-flowable. Field generated materials used for CSG contain water. When the moisture content of the on-site generated material is the optimal moisture content, only cement can be added to make CSG without adding water to the mixer 1. A moisture meter for measuring the amount of moisture contained in the locally generated material is provided in the locally generated material storage tank 5 or in a measuring device 16 connected to the locally generated material storage tank 5. The moisture meter measures the moisture content of locally generated materials, and adds water if moisture is insufficient. The aggregate supplied from the aggregate reservoir 2 to the mixer 1 is also measured for moisture content with a moisture meter. This moisture meter is provided in the aggregate reservoir 2 or the meter 15. The water content of locally generated materials and aggregates is detected with these water content meters, and a necessary amount of water is added to the mixer 1. In the case of CSG, the amount of water added to the mixer 1 is set to an optimum moisture content for the locally generated material or the selected aggregate. The amount of cement added is about 50 to 150 kg with respect to 1 cubic meter of CSG. However, in the case of ready-mixed concrete, the amount of water and cement added is increased.

  The kneading apparatus shown in FIGS. 2 and 3 has a drawer conveyor 21 connected to the supply conveyor 3. The drawer conveyor 21 supplies the locally generated material and aggregate to the supply conveyor 3. The drawer conveyor 21 is disposed below the aggregate silo 22 and the locally generated material silo 23. Aggregate silo 22 supplies aggregate to drawer conveyor 21, and locally generated material silo 23 supplies locally generated material to drawer conveyor 21. The aggregate silo 22 and the locally generated material silo 23 have a larger volume than the aggregate storage tank 2 and the locally generated material storage tank 5, and store a large amount of aggregate and locally generated material. Accordingly, the locally generated material is stored in one locally generated material silo 23, and aggregates having different particle sizes are separated and stored in a plurality of aggregate silos 22. Aggregates having different particle sizes stored in the aggregate silo 22 are supplied to an aggregate storage tank 2 for storing aggregates having different particle sizes.

  Although the aggregate silo 22 and the locally generated material silo 23 are not shown, a discharge port that can be opened and closed is provided at the lower end. The discharge port is opened, and the locally generated material and aggregate are supplied to the drawer conveyor 21. One of the discharge ports of the locally generated material silo 23 and the aggregate silo 22 is opened in order, and the aggregate having a particle size different from that of the locally generated material is supplied to the drawer conveyor 21.

  The aggregate silo 22 and the locally generated material silo 23, the drawer conveyor 21, the supply conveyor 3, and the distribution device 4 always have a certain amount of aggregate and locally generated material in each aggregate storage tank 2 and local generated material storage tank 5. And is driven to store.

  The above kneading apparatus uses the selected aggregate as follows, or uses the locally generated material as the aggregate, adjusts the ready-mixed concrete and CSG, and supplies them to the construction site.

The above kneading apparatus kneads ready-mixed concrete according to the timing chart shown in FIG. Each aggregate storage tank 2 stores a predetermined amount of aggregate having a different particle size, and the locally generated material storage tank 5 stores a certain amount of locally generated material.
(1) Weighing process Opening the outlet 2B of the aggregate storage tank 2, supplying aggregate from the aggregate storage tank 2 to the measuring instrument 15 and supplying the aggregate 1 with the measuring instrument 15 to each mixer 1 Weigh. This step takes 30 seconds.
(2) Inputting process The opening / closing mechanism 15B of the measuring instrument 15 is opened, and the aggregates of each measured particle size are supplied from the measuring instrument 15 to the mixer 1. In this step, a predetermined amount of cement and water are also supplied. This step takes 20 seconds.
(3) Mixing process Mixer 1 is operated. Aggregate, cement and water are mixed to make ready-mixed concrete. The mixer 1 uses a batch type mixer that is kneaded with the stirring blades 12 shown in FIG. This step takes 60 seconds.
(4) Discharging process The gate 13 of the mixer 1 is opened, and the kneaded ready-mixed concrete is discharged. This step takes 20 seconds

  The kneading apparatus operated with the above timing chart repeatedly kneads and discharges the ready-mixed concrete with a cycle time of 100 seconds. If the amount of ready-mixed concrete mixed by the mixer is 3 cubic meters, 108 cubic meters of ready-mixed concrete is produced per hour.

Further, the above-described kneading apparatus kneads CSG according to the timing chart shown in FIG. A predetermined amount of locally generated material is stored in the locally generated material storage tank 5.
(1) Weighing process Opening the outlet 5B of the locally generated material storage tank 5, supplying the locally generated material from the locally generated material storage tank 5 to the measuring device 16, and supplying the locally generated material to the mixer 1 with the measuring device 16. Weigh. The apparatus provided with the plurality of locally generated material storage tanks 5 measures with the measuring device 16 so that the total amount of locally generated materials discharged from the plurality of locally generated material storage tanks 5 becomes a set amount. Furthermore, if the quality of the locally generated material is poor, for example, if the locally generated material has a small content of fine aggregate of 5 mm or less, the weight of the fine aggregate to be added is measured in order to add the fine aggregate to the CSG. Weigh with vessel 15. The time required for this step is 30 seconds, the same as for ready-mixed concrete.

(2) Inputting process The opening / closing mechanism 16B of the measuring instrument 16 is opened, and the measured locally generated material is supplied from the measuring instrument 16 to the mixer 1. Further, when the aggregate of a predetermined particle size is mixed with the CSG, the measured aggregate is supplied to the mixer 1 together with the locally generated material. At this time, the locally generated material and the aggregate are supplied to the mixer 1 through the supply duct 8 together. However, when the locally generated material and the aggregate are passed through the supply duct 8, the locally generated material and the aggregate are mixed with each other. 1 is supplied. How the aggregate and the locally generated material supplied together by the supply duct 8 can be mixed is extremely important for the production of CSG. This is because the kneading time of the mixer 1 is set extremely short in order to increase the processing amount per hour of CSG. CSG uses locally generated material in place of aggregate, and the locally generated material corresponds to an aggregate whose particle size distribution cannot be controlled. Therefore, when mixing aggregate of a specific particle size with the locally generated material, it is possible to mix the locally generated material and the aggregate to be added sufficiently and to disperse the added aggregate to the locally generated material uniformly. It is important.

In the kneading apparatus of the present invention, the locally generated material storage tank 5 and the aggregate storage tank 2 are disposed adjacent to each other, and the locally generated material discharged from the locally generated material storage tank 5 and the aggregate storage tank 2 are disposed. Since the aggregate discharged from the pipe is supplied together with the supply duct 8 to the mixer 1, the aggregate can be sufficiently mixed with the locally generated material when passing through the supply duct 8. For this reason, CSG with sufficient strength can be obtained without lengthening the kneading time of the mixer 1.
In this step, a predetermined amount of cement and water are also supplied. This step takes 20 seconds.

(3) Mixing process Mixer 1 is operated. CSG is made by mixing local materials, cement and water. The mixer 1 uses a batch type mixer that is kneaded with the stirring blades 12 shown in FIG. This step takes 10 seconds. CSG can make the compressive strength of a test piece obtained by kneading time 10 seconds into a sufficient value of 93%, compared with a test piece obtained by kneading time 60 seconds. Therefore, sufficient strength is achieved with 1/6 kneading time of ready-mixed concrete.
(4) Discharging process The gate 13 of the mixer 1 is opened, and the kneaded ready-mixed concrete is discharged. This step takes 20 seconds

  The kneading apparatus operated according to the above timing chart kneads CSG repeatedly and discharges it with a cycle time of 50 seconds. Since the cycle time of CSG is shortened to half that of ready-mixed concrete, if the amount of CSG mixed by mixer 1 is 3 cubic meters, 216 cubic meters per hour, twice the amount of ready-mixed concrete is produced. it can.

It is a schematic block diagram of the kneading | mixing apparatus of the ready-mixed concrete and CSG concerning one Example of this invention. It is a schematic plan view of the mixing apparatus of ready-mixed concrete and CSG concerning one Example of this invention. It is a schematic plan view of the mixing apparatus of the ready-mixed concrete and CSG concerning the other Example of this invention. It is a timing chart which knead | mixes ready-mixed concrete with the kneading apparatus concerning one Example of this invention. It is a timing chart which knead | mixes CSG with the kneading apparatus concerning one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mixer 2 ... Aggregate storage tank 2A ... Supply port 2B ... Discharge port 3 ... Supply conveyor 4 ... Distributing device 5 ... Locally generated material storage tank 5A ... Supply port 5B ... Discharge port 6 ... Cement supply device 7 ... Storage tank 8 ... Supply duct 8A ... Discharge port 10 ... Vessel 10A ... Supply port 11 ... Rotation mechanism 12 ... Agitating blade 13 ... Gate 14 ... Discharge port 15 ... Measuring instrument 15A ... Measuring tank 15B ... Opening / closing mechanism 16 ... Measuring instrument 16A ... Measuring tank 16B ... Opening and closing mechanism 17 ... Chute 18 ... Drive mechanism 20 ... Temporary storage tank 21 ... Drawer conveyor 22 ... Aggregate silo 23 ... Locally generated material silo

Claims (6)

Mixer (1) kneaded with aggregate and cement to make ready-mixed concrete or CSG by kneading locally generated material and cement, and placed above this mixer (1), the size is different A plurality of aggregate storage tanks (2) that temporarily store aggregates and supply them to the mixer (1), and disposed above the mixer (1) adjacent to the aggregate storage tank (2) The locally generated material storage tank (5) that temporarily stores the material and supplies it to the mixer (1), and the locally generated material that is supplied to the locally generated material storage tank (5) The supply conveyor (3) for supplying the material and the aggregate and the locally generated material supplied to the supply conveyor (3) connected to the discharge side of the supply conveyor (3) are respectively stored in the aggregate storage tank (2). And a distribution device (4) for switching and supplying to the locally generated material storage tank (5), an aggregate storage tank (2), and an aggregate storage tank (2) disposed below the locally generated material storage tank (5). 2) Aggregate discharged from It has a supply duct (8) that supplies the locally generated material discharged from the locally generated material storage tank (5) to the mixer (1), and a cement supply device (6) that supplies cement to the mixer (1). ,
The supply conveyor (3) supplies aggregates of different sizes to each aggregate storage tank (2) via the distribution device (4) and temporarily stores them in the aggregate storage tank (2). (4) to supply locally generated material to the locally generated material storage tank (5) and temporarily store it in the locally generated material storage tank (5),
The aggregate discharged from the aggregate storage tank (2) and the locally generated material discharged from the locally generated material storage tank (5) are supplied to the mixer (1) through the supply duct (8), and the mixer (1 ) Thus, a concrete kneading apparatus for raw concrete and CSG, in which both raw concrete and CSG are selected and kneaded.   A measuring instrument (15) for measuring the weight of aggregate supplied to the mixer (1) through the supply duct (8) is provided on the discharge side of the aggregate storage tank (2). Mixing equipment for ready-mixed concrete and CSG.   The measuring device (16) for measuring the weight of the locally generated material supplied to the mixer (1) via the supply duct (8) is provided on the discharge side of the locally generated material storage tank (5). Kneading equipment for ready-mixed concrete and CSG.   The invention comprises two or six aggregate storage tanks (2) for storing aggregates of different sizes in two or six types and one or two locally generated material storage tanks (5). Kneading equipment for ready-mixed concrete and CSG as described. A drawer conveyor (21) that supplies aggregate and locally generated material is connected to the supply conveyor (3), and aggregate silo (22) for storing aggregate and locally generated material are connected to this drawer conveyor (21). It connects with the locally generated material silo (23) to store,
Aggregate stored in the aggregate silo (22) is supplied to the aggregate storage tank (2) by the drawer conveyor (21), supply conveyor (3) and distribution device (4), and stored in the locally generated silo (23) 2. The raw concrete and the CSG of the raw concrete according to claim 1, wherein the locally generated material is supplied to the locally generated material storage tank (5) by a drawer conveyor (21), a supply conveyor (3), and a distribution device (4). Kneading equipment. The mixer (1) has a timer for storing the mixing time of the ready-mixed concrete and the mixing time of the CSG. The mixing time of the ready-mixed concrete stored in this timer is 40 to 80 seconds, and the mixing time of the CSG is set to 7 to The mixing apparatus for ready-mixed concrete and CSG according to claim 1, wherein the mixing time is 15 seconds.

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