KR100773067B1 - The blending method and the apparatus for auto-controlling ratio of size of recycling aggregate - Google Patents

Abstract

A mixing method and an apparatus for automatically controlling the mixing ratio of recycled aggregates according to the size are provided to satisfy bearing power necessary for road construction and quality standards by exactly controlling the size of aggregates. A mixing method for automatically controlling the mixing ratio of recycled aggregates according to the size comprises the steps of: installing an automatic gate controller connected with a load cell(21) measuring weight and turned on/off, at input hoppers(20a,20b,20c) and operating the load cell by setting target weight as reference weight correspondently to the aggregate mixing ratio set in the load cell in advance; starting to supply the aggregates and stopping feeding the aggregates if load applied to the load cell is over reference weight; calculating an error value between load applied to the load cell and target weight, resetting a value output by subtracting the error value from a reference weight value, as reference weight, and feeding back the reset reference weight; pouring aggregates contained in the input hopper, into a conveyor belt by opening a gate by the automatic gate controller; closing the gate and supplying the aggregate to the input hopper again if load applied to the load cell becomes zero and the aggregates are exhausted; and sending the predetermined amount of aggregates to the conveyor belt.

Description

The blending method and the apparatus for auto-controlling ratio of size of recycling aggregate}

1A is a perspective view of Embodiment 1 of the present invention;

1B is a side view of Embodiment 1 of the present invention;

1C is a plan view of Embodiment 1 of the present invention;

2A is a perspective view of a second embodiment of the present invention;

Figure 2b is a side view of Example 2 constituting the present invention.

2C is a plan view of Embodiment 2 constituting the present invention;

Figure 3a is a perspective view of a third embodiment of the present invention.

3B is a side view of Example 3 constituting the present invention;

Figure 3c is a plan view of a third embodiment of the present invention.

4A is a perspective view of Embodiment 4 of the present invention;

4B is a side view of Embodiment 4 of the present invention;

4C is a plan view of Embodiment 4 constituting the present invention;

5A is a perspective view of a fifth embodiment of the present invention;

5B is a side view of Embodiment 5 incorporating the present invention;

5C is a plan view of Example 5 constituting the present invention;

6A is a perspective view of a sixth embodiment of the present invention;

6B is a side view of Embodiment 6 incorporating the present invention;

6C is a plan view of Example 6 constituting the present invention;

7 is a flowchart illustrating a method of measuring weight using a load cell.

8 is a flowchart illustrating a method of measuring a volume using an optical sensor.

******** Description of the main signs in the drawings ********

10a, 10b, 10c: storage hopper 11: automatic gate opening and closing device

20a, 20b, 20c: Input Hopper 21: Load Cell

22: light sensor 23a, 23b, 23c: gate

30: belt conveyor 40: mixing chute

41: hook-type rotating body 42: screw-type rotating body

43: shaft arm type rotating body 50: belt feeder

60: screw feeder

The present invention relates to a facility for automatically adjusting the mixing ratio of aggregate particle size for each use in the intermediate treatment of construction waste and the production process of recycled aggregates, and an accessory device thereof.

The facility for automatically adjusting the aggregate granularity mixing ratio for each use is to secure the quality standard and KS (Korean Industrial Standard) required at the construction site at the same time to produce and supply mixed aggregate for road construction base or auxiliary base at various construction sites. The present invention relates to a technology for automatically adjusting the blending ratio of each aggregate size applicable to the facility.

In general, aggregate is produced outside the natural environment, that is, exposed to rain, snow, wind, etc., and is used in the field as needed.

Particularly, aggregates obtained by recycling waste concrete have been used mainly for landfills, landfills, and soils, which are low-level applications. However, aggregates obtained by recycling waste concrete are used in the situation where aggregate resources are recently exhausted. It has the task of introducing precisely sized separation facilities for each use and expanding the application by installing precision mixing facilities for each use.

However, the current situation is that even when aggregates with different particle sizes of different companies are mixed, aggregates with a single particle size are regarded as imported and are mixed and used properly. .

Recently, the Ministry of Construction and Transportation introduced the new production facilities and facilities, and introduced and produced high-quality aggregates, with the introduction of the recycling aggregate quality certification system, which strengthens the supply standard of aggregates to eradicate low aggregate aggregates. I'm fortunate that I'm trying to do it.

In particular, with the introduction of the recycling aggregate quality certification system, aggregates that meet the quality standards of each application are used to increase the durability of concrete structures and to maximize the reuse rate.

At present, the use of recycled aggregate produced through the intermediate treatment process for recycling construction waste is gradually increasing in road construction and ground construction, but in order to use it as the base or subbase aggregate in construction, Accurate particle size range and corresponding plasticity index, modified CBR value, wear loss, sand equivalent, liquid limit, organic foreign matter (volume basis), inorganic foreign substance (mass basis) must be satisfied.

For example, the particle size control base material prescribed by the Ministry of Construction and Transportation's Standard Specification for Road Construction and Road Pavement Design Guidelines should be a mixture of durable crushed stone, crushed gravel, etc., with sand or other suitable materials. It is a material approved by the inspector and should not contain harmful substances such as clay, organic impurities, dust, etc., and the material is strictly required to be used with at least two crushed surfaces of 70% or more of the remaining material in the 4.75 mm sieve. The specification states that the quality regulations indicated in <Table 1> and <Table 2> must be passed.

<Table 1> Grain Size Adjuster Material Test Methods and Standards (Road Construction Standard Specification)

division Test Methods standard Plasticity index KS F 2303 4 or less Corrected CBR (%) KS F 2320 80 or more Wear loss (%) KS F 2508 40 or less stability(%) KS F 2507 20 or less

(1) Specimens of samples used for the test shall be in accordance with the supervisor's instructions.

(2) Slag, waste, etc. are to be checked for the smell of turbid water and hydrogen sulfide by immersion according to the color test.

(3) When slag is used as a synthetic material, it is to be in accordance with KS F 2535.

<Table 2> Standard Grain Size of Grain Size Adjuster Layer Material (Road Construction Standard Specification)

division % Of weight passed 53 mm 37.5 mm 26.5 mm 19 mm 4.75 mm 2.36 mm 425 ㎛ 75 μm B-1 100 95-100 - 60-90 30-65 20-50 30 2 to 10 B-2 - 100 80-95 60-90 30-65 20-50 30 2 to 10

In addition, the subbase, which is located in the middle of the surface layer and the road along with the base layer, distributes the traffic loads transmitted through the surface layer and the base layer and delivers it to the road. The specification suggests that it must be passed.

<Table 3> Quality Standards for Auxiliary Base Materials (Standard Specification for Road Works, Special Specification for Highway Works, KS F 2574)

division Test Methods standard Liquid limit (%) KS F 2303 25% less than Wear loss (%) KS F 2508 50 or less Plasticity index (%) KS F 2304 6 or less Correction CBR (%) KS F 2320 30 or less Sand equivalent KS F 2340 25 or less

<Table 4> Standard Grain Sizes of Recycled Aggregate for Auxiliary Bases

Checker Passage weight percentage (%) 80 mm 50 mm 40 mm 20 mm 5 mm 2.5 mm 0.4 mm 0.08 mm SB-1 100 - 70-100 50-90 30-65 20-55 5-25 2 ~ 10 SB-2 - 100 80-100 55-100 30-70 20-55 5-30 2 ~ 10

However, in order to meet these strict quality standards, it is necessary to secure particle size distribution of aggregated crushed stone and recycled aggregates, stability and drainage of aggregates. It is divided into stars (13mm, 25mm, 40mm or less on-site import by aggregate size), and it is properly mixed after carrying in the site and compacted. I'm experiencing it.

In addition, Article 35 of the Act on the Promotion of Recycling of Construction Waste requires the particle size and requirements for recycling aggregate quality standards for road construction.

<Table 5> Particle Size and Requirements for Circulating Aggregate Quality Standards for Road Works (Circulation Aggregate Quality Standards)

Checker Size Passage and mass percentage (%) 75 mm 50 mm 40 mm 20 mm 5 mm 2.5 mm 0.4 mm 0.08 mm RSB ^Ltd. -1 100 - 70-100 50-90 30-65 20-55 5-25 2 ~ 10 RSB-2 - 100 80-100 55-100 30-70 20-55 5-30 2 ~ 10 RSB: Circulating aggregate for road auxiliary layer

Examination Items Equipment requirements Item standard method of inspection -2 times of sampling and testing-At least once every 6 months Plasticity index 6 or less KS F 2303 Corrected CBR value (%) 30 or more KS F 2320 Wear loss (%) 50 or less KS F 2508 Sand equivalent 25 or more KS F 2340 Liquid limit (%) 25 or less KS F 2303 Organic Foreign Matter (%, Volume) 1.0 or less (by volume) KS F 2576 Inorganic Foreign Matter (%, Mass) 5.0 or less (by mass) Mass measurement after sorting foreign matter by KS F 2576

The relevant laws and regulations require strict quality standards as described above, and in fact, it is possible to separate and sort by size in the production process of recycled aggregates and crushed aggregates for the recycling of construction waste, and to optimize the particle size according to the process by sieve separation. In the case of applying the mixing process and applying the mixing process, it is possible to produce aggregate for each use that can be used for various purposes such as base construction, subbase construction, filling, and covering of road construction. The specification specified in 'B's' Pavement Design Guideline' could not be applied in the field, and the quality management standard could be changed according to the recognition of site workers, and it was applied in terms of securing stable aggregates due to the large quality deviation. Still has many problems.

In addition, the 'Circulation Aggregate Quality Certification System' was introduced in accordance with Article 35 of the Act on the Promotion of Recycling of Construction Wastes, which was enacted in December 2003 as shown in <Table 5>. There is a problem of failing to provide suitable aggregates.

Therefore, the present application is a technology for overcoming the limitations of the prior art in consideration of the above requirements, and by installing a gate device at the bottom of the storage hopper in the intermediate treatment and construction of the recycled aggregate production process of the separate production by the particle size desired by the user In the so-called circulating aggregate production process for automatically adjusting the mixing ratio of aggregates by granularity, including a storage hopper having a built-in means for accurately supplying an appropriate amount of aggregate to a particle size, aggregate transfer means, and aggregate mixing means. Disclosed is a technical idea of an apparatus for automatically controlling aggregate particle size by use.

The present invention is a technology that can be applied at various construction sites.

It includes storage hopper, aggregate transfer means, and aggregate mixing means with built-in control means to enable more efficient and economical on-site mixing, laying, and compaction by importing aggregates that are applied at various road construction sites. Aggregate particle size is provided through the automatic control discharge device has an object of the invention to provide a mixed aggregate suitable for the prescribed particle size and quality.

In addition, through accurate granularity control, it satisfies the supporting capacity and quality standards necessary for road construction, thereby improving the quality and constructability of construction works, contributing to resource conservation and national environmental preservation by increasing the use of recycled aggregates. It aims to provide a method for producing aggregates with high workability and economic feasibility by producing quality products with accurate particle size distribution of crushed aggregates, ensuring quality suitable for construction-specific construction standards required by various construction works, and easily managing the quality of aggregates.

Currently, the construction waste intermediate treatment and recycled aggregate production processes are mostly produced and supplied by crushing aggregates and separating them by particle size through primary and secondary crushing processes.

Recently, with the introduction of the recycling aggregate quality certification system, the recycling aggregate quality standards have been enacted, leading to the 3rd crushing process.In addition, facilities such as crushing, separation, and sorting have been expanded. Construction waste intermediaries are working to remove cement paste from the surface.

In addition, in the case of base construction and subsidiary base of road construction where mixed aggregate can be used most actively, KS (Korean Industrial Standard) has already prescribed the particle size range of aggregate, and when used for this purpose, the particle size range must be satisfied. As the construction standard is suggested, the aggregate particle size should be maintained for each use purpose in consideration of the bearing capacity, fillability, etc. of the base layer or auxiliary base layer. This may cause adverse effects on the entire road construction.

For example, if you look at the asphalt pavement configuration, the asphalt pavement layer can be divided into roadbed and pavement layer, the pavement layer can be further divided into subbase, base layer, intermediate layer, surface layer, wear layer, and the road basement pavement Since it is located below the relatively thin surface layer as a part to be constructed at the surface layer or the bottom of the intermediate layer, an aggregate material capable of supporting it and having sufficient resistance to deformation should be used because the load pressure distribution transmitted to this layer is high. do.

In general, the base layer is called as a particle size adjustment base, heated asphalt stabilized base, poorly mixed concrete base, and cement stabilized base according to the type of road and the design capacity. It is used as a base for cement stabilization or empty concrete in pavement of concrete, and as a particle size adjustment base for small roads and roads with low design load.

Therefore, although the standards for materials and construction for road substrates are differently set according to the type of road and allowable design, the KS does not provide separate quality standards for materials for road substrates. According to the construction specification of the above, the following general regulations are applied to each test method, for example, plastic index, modified CBR value, wear loss, sand equivalent, liquid limit, organic foreign matter (volume basis) and inorganic foreign substance (mass basis). .

The granularity base material specified in the 'Standard Specification for Road Construction' and 'Pavement Design Guideline' enacted by the Ministry of Construction and Transportation shall be made of a mixture of durable crumbling stones, crumbling gravel, etc., with sand or other suitable materials. As a material, it should not contain harmful substances such as clay, organic impurities and dust.

In addition, the particle size adjustment base maintains the bearing capacity due to the engagement of the aggregates. Therefore, the bearing capacity is weakened when there is an effect of rainfall or groundwater, so the groundwater may be affected by the groundwater even if the groundwater does not exist. As it has a limit on bearing capacity, it is a rule to use on local roads and city roads with low traffic, not on main roads or highways.

In addition, there is no quantitative regulation on the inclusion of mud lumps, bark, dust, and other harmful substances in the particle size adjustment base material, but no harmful content or mixing is required. Otherwise, there is a possibility of lack of cleanliness and mixed with some impurities, which is the main cause of harmful effects on bearing capacity and water content, and is prohibited when used directly or indirectly.

Located in the middle of the surface layer and roadbed together with the base layer, the auxiliary base layer, which is a part that distributes the traffic load transmitted through the surface layer and the base layer, and transmits it to the roadbed, prevents the subgrade soil from penetrating into the base layer and prevents damage by freezing. Minimize the role of providing work to construction equipment.

Therefore, the auxiliary base should have sufficient supporting force, and it is a durable material and should not contain organic impurities or other harmful substances. To recycle waste concrete and use it as base or auxiliary base, foreign substances such as wood and reinforcing bar in the process of sorting waste concrete It must be separated and screened thoroughly, and waste concrete shows great deviations depending on the site conditions, collection methods, and screening process when collecting raw materials. Therefore, it must be approved by the management body or follow the instructions of the management body before use.

In addition, when the quality of subgrade soil is excellent, the auxiliary base layer can be excluded from the pavement layer, so it is not necessarily applied to all road works.The general quality standards of the auxiliary base material are plastic index, modified CBR value, wear loss, sand equivalent, The liquid limit value is specified, and the standard value is the same in all specifications and KS.

This is a technology that can be applied at various construction sites in consideration of the above requirements, and performs the mixing, laying, and compacting of the site by importing aggregates that are applied at the road construction site more efficiently and economically. Disclosed is a technical idea of an automatic particle size adjusting and discharging device for each road engineering use including a storage hopper and an aggregate transport means and an aggregate mixing means, in which a control means is built.

Hereinafter, preferred embodiments of the present invention will be described in detail with the accompanying drawings.

1 to 6 are intended to illustrate preferred embodiments 1 to 6 that can be implemented with the technical spirit of the present application, when the overview of the technical spirit of the present invention first, a plurality of aggregates are stored first classified by particle size Storage hopper 10, and the lower end of the storage hopper aggregate aggregate of the storage hopper inside the input hopper 20 for inputting a predetermined weight, or a predetermined volume and the aggregate transported to the lower end of the input hopper mixed Conveyor belt 30 and the conveying direction side end portion of the conveyor belt including a mixing chute 40 for mixing the conveyed aggregate consists of providing a particle size control discharge device for mixing the aggregate at a specified mixing ratio. .

At this time, between the storage hopper 10 and the input hopper 20 may be further provided with a belt feeder 50 for transferring the aggregate discharged from the storage hopper 10 to the input hopper 20, the storage hopper (10) Inside the circulating aggregate is classified by particle size, the aggregate discharge port may be provided with an automatic gate control device (11).

The input hopper 20 is provided with an automatic gate control device 23 to adjust the amount of aggregate injected by opening or closing the gate, and measure the load cell 21 or the volume to measure the weight One of the optical sensors 22 may be selected and provided.

The automatic gate control devices 11 and 23 of the storage hopper and the input hopper may be opened or closed automatically by using a motor equipped with a reduction gear or may adjust the area of the outlet.

The conveyor belt 30 receives the aggregate from the input hopper 20 and serves to transfer it to the mixing chute 40. In this case, an appropriate amount of aggregate is input from the input hopper to be mixed at a specified mixing ratio.

The mixing chute 40 serves to evenly mix the aggregate aggregate transported from the conveyor belt by installing the rotating body 41, 42, 43 therein, the rotating body has a hook form 41, screw form ( 42), one of the shaft arm form 43 may be selected and used, and also the method of mixing the aggregate by adjusting the width and height of the conveying conveyor to the aggregate conveyed from the conveyor belt 30 without a separate mixing device May also be employed.

The technical idea may be disclosed in various embodiments, Figure 1 shows an embodiment 1 of the present invention, Figure 1a shows a perspective view of the embodiment 1, Figure 1b is a side view, Figure 1c is a plan view thereof.

The belt feeder 50 is installed at the bottom of three storage hoppers 10a, 10b, and 10c classified by particle size, and supplies aggregate of the storage hopper to the input hopper 20, and a load cell (below) at the bottom of the belt feeder 50. 21 and input hoppers 20a, 20b, and 20c equipped with automatic gate adjusting devices 23a, 23b, and 23c are installed to supply aggregate from the belt feeder 50 in a state in which the gate 23 is closed. When the gate is opened to allow the aggregate of a certain weight into the conveyor belt (30), and after the completion of the setting of the discharge can be equipped with a limit switch can be fixed at a constant discharge.

Conveyor belt 30 is installed at the lower end of the input hopper (20a, 20b, 20c) is transported while mixing the aggregate input from each of the input hopper (20a, 20b, 20c), the cone of the conveyor belt (30) At the end of the conveying direction, a mixing chute 40 having a rotator 41 in the form of a hook is installed therein and configured to mix the mixed aggregate so that it is more evenly distributed, thereby controlling the amount of aggregates to be aggregated, thereby controlling the aggregate mixture of the desired particle size. An embodiment of the discharge apparatus can be obtained.

Therefore, in Embodiment 1, gate devices 23a, 23b, and 23c are installed at the lower ends of the input hoppers 20a, 20b, and 20c to supply an appropriate amount for each appropriate particle size. According to the opening and closing amount of the gate after the hopper 10a, 10b, 10c indicates that it is possible to implement the technical idea to adjust the discharge of the recycled aggregates by the particle size of the contents.

Figure 2 shows a second embodiment of the present invention, Figure 2a shows a perspective view of the article constituting the second embodiment, Figure 2b is a side view thereof, Figure 2c is a plan view thereof.

A plurality of storage hoppers (10a, 10b, 10c) classified by particle size is provided with an automatic gate control device, an input hopper having an optical sensor 22 and an automatic gate control device 23 at the bottom of the storage hopper ( 20a, 20b, and 20c are installed to receive aggregates from the belt feeder 50 in the state in which the gate is closed, and pile up above a certain height. 30), and the conveyor belt 30 is installed at the lower end of the input hopper (20a, 20b, 20c) to mix and transport aggregate input from each input hopper, the conveyor belt (30) At the end of the conveying direction of the mixing chute 40 is provided with a rotating body 42 in the form of screw is shown an embodiment of the particle size control discharge device configured to mix the mixed aggregate to be evenly distributed.

Example 2 is characterized in that the gate device is installed at the bottom of the hopper and the measuring device by volume is installed, wherein the gate devices (23a, 23b, 23c) is opened and closed by driving the reduction motor and manufactured a container conforming to the particle size curve And install an optical sensor 22 that can be detected when the appropriate amount is accumulated, and the appropriate container is manufactured and installed in accordance with the particle size distribution curve at the bottom of the hopper. The optical sensor 22 installed at the top of the container senses the height of the accumulated aggregate aggregate to close the inflow gate device, and when the inflow gate device is closed, the discharge gate at the bottom of the container is opened and introduced into the conveyor belt 30, and the mixing device 40 In this case, it is controlled to mix evenly, and the opening side of the gate needs to be adjusted at the bottom of the container because many vessel sizes are not the same.

Figure 3 shows a third embodiment of the present invention, Figure 3a shows a perspective view of the third embodiment, Figure 3b is a side view thereof, Figure 3c is a plan view thereof.

3 is provided with an automatic gate control device 11 in three storage hoppers 10a, 10b, and 10c classified by particle size, and at the bottom of the storage hoppers 10a, 10b and 10c. Input hoppers 20a, 20b, and 20c equipped with gate control devices 23a, 23b, and 23c are installed to receive aggregates from the storage hopper while the gates are closed so that the gates are opened when the weight is constant. To be introduced into the conveyor belt 30, and the conveyor belt 30 is installed at the lower end of the input hoppers 20a, 20b, and 20c to aggregate aggregates introduced from the respective input hoppers 20a, 20b, and 20c. Mixing and conveying, and the mixing chute equipped with a rotating arm 43 in the form of a shaft arm at the end of the conveying direction of the cone bayer belt 30 is installed to mix the aggregate aggregate to distribute evenly evenly An embodiment of the apparatus is shown.

Embodiment 3 is characterized in that by providing a weighing device using a load cell at the bottom of the hopper to supply an appropriate amount, the gate device (23a, 23b, 23c) is opened and closed by driving the reduction motor and the particle size distribution curve Calculate the proper amount by the input to the load cell 21, the gate device is closed when the proper weight is reached, when the gate device is closed, the gate of the lower load cell is opened to feed into the conveyor belt 30, the mixing device 40 Mix them evenly. In this case, since the weight of the product contained in the plurality of load cell devices is different, it is necessary to adjust the opening side of the gate opening and closing portion under the load cell.

Figure 4 shows a fourth embodiment of the present invention, Figure 4a is a perspective view of the fourth embodiment, Figure 4b is a side view thereof, Figure 4c is a plan view thereof.

Figure 4 is provided with an automatic gate control device 11 in the three storage hoppers (10a, 10b, 10c) classified by particle size, the gate control device is adjusted in accordance with the mixing ratio of the specified aggregate is always a certain amount of aggregate Each of the storage hoppers 10a, 10b, and 10c is introduced into the conveyor belt 30, and the conveyor belts 30 installed at the lower ends of the storage hoppers 10a, 10b, and 10c are respectively stored in the storage hoppers 10a, 10b, and 10c. A particle size configured to mix and feed aggregates introduced from 10c), and a mixing chute 40 having a rotating body installed therein is installed at the end of the conveyer belt 30 in a conveying direction. An embodiment of the control discharge device is shown.

Example 4 is characterized in that the appropriate amount is measured and supplied using only the gate device 11 without a separate measuring device at the bottom of the storage hopper. By adjusting the gate of each storage hopper (10a, 10b, 10c) to fit the particle size distribution curve shows that a constant amount is continuously introduced into the belt conveyor 30 and mixed through the mixing device 40.

FIG. 5 shows a fifth embodiment constituting the present invention, FIG. 5A is a perspective view of a fifth embodiment, FIG. 5B is a side view thereof, and FIG. 5C is a plan view of three storage hoppers classified by particle size. The screw feeder 60 is installed at the lower end of 10a, 10b, and 10c, indicating that the feed rate of aggregate can be adjusted by rotating the shaft of the screw feeder using a motor or a cycle reducer capable of adjusting the rotational speed. .

Example 5 is equipped with a screw feeder 60 at the bottom of the storage hopper and using a cyclone reducer or a V.S motor capable of adjusting the rotational speed as a power unit can adjust the rotational speed of the screw feeder to supply an appropriate amount of aggregate. It is possible to calculate the amount of aggregate conveyed by the blade diameter of the screw feeder and the number of revolutions per minute (RPM), and to transfer the appropriate amount of aggregate continuously in each hopper according to the particle size distribution curve, and to put it into the conveyor belt. It can be mixed and discharged through.

6 shows a sixth embodiment constituting the present invention, Figure 6a is a perspective view of the sixth embodiment, Figure 6b is a side view, Figure 6c is a plan view, three storage hoppers classified by particle size The belt feeder 50 is installed at the lower end of 10a, 10b, and 10c, indicating that the feed rate of aggregate can be adjusted by transferring the belt feeder using a motor or a cycle reducer capable of adjusting the rotational speed.

Embodiment 6 is equipped with a belt feeder 50 at the bottom of the storage hopper and using a VS motor or a cyclo reducer as a power unit that can adjust the rotational speed of the drive head drum of the belt feeder to control the feed speed of the belt feeder 50. It is possible to supply the appropriate amount of aggregate, and the cross-sectional area of the gap between the belt feeder and the hopper can be calculated to calculate the amount of aggregate to be conveyed by the feed distance per minute (MPM) of the belt feeder. The hopper continuously conveys an appropriate amount of aggregate in each hopper according to the curve, and is mixed through the input mixing device to the conveyor belt 30.

The six embodiments are devices that allow to quantitatively supply and produce the particle size distribution of aggregates according to the intended use by avoiding the mixed laying method at the construction site, thereby improving the workability and ensuring the stability of the quality and economic efficiency. You can expect the effect.

Examples 1, 2 and 3 have the advantage that it is impossible to continuously operate the weight and volume by weighing and measuring, but it is possible to make an accurate amount of mixing ratio, whereas Examples 4, 5 and 6 have weight and volume. After several experiments without the measurement and measurement of volume, it is possible to work continuously after finding the proper transfer range.

FIG. 7 is a flowchart illustrating a method of measuring the weight of aggregate using the load cell 21, and illustrates an operation principle of the input hopper 20 that can accurately input the target weight specified by the conveyor belt 30. As shown in FIG. .

According to the present invention, the target weight is set to the reference weight in accordance with a predetermined aggregate mixing ratio to the load cell provided in the input hopper in the particle size controlled discharge device (S101) and the load cell is operated (S102), and then aggregate is supplied (S103). When the load is added to the load cell is a reference weight or more (S104), the aggregate supply is stopped (S105).

At this time, a slight error occurs between the value of the load on the load cell and the target weight. In order to reduce the error and supply the correct target weight value, the error between the load on the load cell and the target weight is calculated (S106). The value obtained by subtracting the error from the reference weight value is reset to the reference weight (S107) so that the reference weight value can be fed back.

After that, the gate was opened using the automatic gate adjusting device 23 (S108), and the aggregate inside the hopper was introduced into the conveyor belt (S109), and the load added to the load cell became 0, and thus the aggregate ran out. S110) closes the gate (S111) and supplies the aggregate back to the input hopper (S103) can be operated as a system to be divided into the conveyor belt divided by the specified weight.

FIG. 8 is a flowchart illustrating a method of measuring the volume of aggregate using the optical sensor 22, and illustrates an operation principle of the input hopper 20 that can accurately input the target volume to the conveyor belt 30. have.

In the particle size controlled ejection device formed by the present invention, the reference height is set according to the interior mixing space of the input hopper according to a predetermined mixing ratio of the aggregate provided to the optical sensor provided in the input hopper (S201) and the optical sensor is operated (S202). After supplying the aggregates into the input hopper and aggregates inside the input hopper when the optical sensor is operated above (S204), the input of the aggregate is stopped (S205).

At this time, a slight error may occur due to the time taken until the aggregate input is stopped after the reaction of the optical sensor, so that the reference height is slightly lowered to supply the correct volume.

Then, the gate is opened using the automatic gate control device 23 (S208), and the aggregate inside the input hopper is introduced into the conveyor belt (S209). When the operation of the optical sensor is stopped (S210), the gate is closed (S211). By supplying the aggregate back to the hopper (S203) is divided into a specified volume is put into the conveyor belt.

The present invention described above relates to the production and supply of mixed aggregates suitable for the particle size and quality specified so that the on-site mixing, laying and compacting by the particle size of the aggregates currently applied at the road construction site can be more efficiently and economically. Technology.

Through this, it satisfies the supporting capacity and quality required for road construction, and it is possible to supply mixed recycled aggregates according to the request of accurate granularity, thereby improving the quality and constructability of construction works, as well as the resources and national level due to the increased use of recycled aggregates. It has the effect of providing technologies that can contribute to environmental conservation.

The results of the mixed aggregate experiment of the particle size distribution specified in <Table 4> of the aggregates having four different particle size distributions using this facility showed the results as shown in FIG. 9. As shown in the figure, the aggregates were found to have an appropriate distribution for the granularity base as desired.

Claims (9)

In order to recycle the construction waste to provide the aggregate of the particle size suitable for the purpose of use, a plurality of storage hopper (10) storing the aggregates classified by the particle size and the storage hopper aggregate to the bottom of the storage hopper inside the predetermined weight A basic configuration for mixing and discharging the transported aggregate to the feeding hopper 20 for feeding, the conveyor belt 30 for mixing and conveying the aggregate injected into the lower end of the feeding hopper, and the transport side side end of the conveyor belt. In the mixed aggregate blending apparatus having: The gate hopper 20 is provided to be configured to be on / off in conjunction with the load cell 21 to measure the weight of the automatic gate control device 23, based on the target weight in accordance with the aggregate mixing ratio predetermined in the load cell Set the weight (S101) to operate the load cell (S102) and start supplying aggregates (S103) when the load added to the load cell is more than the reference weight (S104), the aggregate supply is stopped (S105), the load on the load cell And, calculate the error between the target weight (S106) to reset the value of the reference weight minus the error to the reference weight (S107) to feed back to the reference weight value, the gate using the automatic gate control device (23) Open (S108) Aggregate inside the input hopper to be fed into the conveyor belt (S109), and if the load is added to the load cell is 0, when it is determined that the aggregate runs out (S110), close the gate (S111) and aggregate again in the input hopper To Automatically control aggregate compounding device characterized in that it is provided so as to precisely control the amount of aggregate discharged by forming a system that is input to the conveyor belt by dividing by a specified weight by supplying (S103). delete In order to provide aggregates suitable for use in construction sites, a plurality of storage hoppers (10) storing aggregates classified by particle size, and storage hopper aggregates are collected at a lower end of the storage hopper to a predetermined weight or a certain volume. Means for mixing or discharging the conveyed aggregate in the feeding hopper 20 for feeding as much as possible, the conveyor belt 30 for mixing and conveying the aggregate injected into the lower end of the feeding hopper, and the end side in the conveying direction of the conveyor belt In the aggregate mixing and discharging device comprising a basic configuration, the aggregate mixing method for providing a mixed aggregate according to the particle size suitable for the purpose of use in the construction site, Automatic gate control device 23 in the input hopper 20 is configured to be connected on / off in conjunction with the load cell 21 that can measure the weight, the target weight is set to the reference weight in accordance with the aggregate mixing ratio predetermined in the load cell (S101) and after the load cell is operated (S102), the aggregate is started to be supplied (S103), and when the load added to the load cell is greater than or equal to the reference weight (S104), the aggregate supply is stopped (S105), and the load and target applied to the load cell are Calculate the error between the weight (S106) to reset the reference weight value minus the error to the reference weight (S107) to feed back to the reference weight value, and open the gate using the automatic gate control device 23 (S108) When the aggregate inside the input hopper is put into the conveyor belt (S109), and the load added to the load cell becomes 0, and the aggregate is exhausted (S110), the gate is closed (S111), and aggregate is supplied to the input hopper again (S103). As far as possible Aggregate blending method characterized in that it is provided to control the amount of aggregate injected into the conveyor belt (30) in the hopper 20. The method of claim 3, Aggregate method, characterized in that the automatic gate control device (11, 23) installed in the storage hopper or the input hopper is provided to be automatically opened and closed using a V.S motor with a reduction gear or a hydraulic gear. The method of claim 3, Aggregate conveyed from the conveyor belt 30 is mixed in the mixing device 40, the rotating body is selected from one of the hook form 41, screw form 42, shaft arm form 43 in the mixing apparatus Aggregate blending method characterized in that it is provided to be discharged by mixing evenly mixed aggregate conveyed from the conveyor belt. delete delete The method of claim 3, A belt feeder is mounted at the bottom of the storage hopper and a rotation speed of the belt feeder is controlled by adjusting the rotational speed of the belt feeder using a VS motor or a cyclo reducer. Aggregate formulation method. In order to recycle the construction waste to provide aggregates suitable for the purpose of use, a plurality of storage hoppers (10) in which aggregates classified by particle size are stored, and storage hopper aggregates are collected inside the storage hopper by a predetermined volume. An automatic gate control device 23 configured to be turned on / off in association with an input hopper 20 for inputting, an optical sensor 22 capable of measuring a height of the input hopper 20, and a lower end of the input hopper. In the mixed aggregate blending apparatus having a basic configuration of the conveyor belt 30 for mixing and conveying the aggregates introduced into the granules, and the particle size control discharge device for mixing and discharging the conveyed aggregate at the end of the conveying belt side, After setting the reference height to the target volume of the optical sensor 22 in accordance with the predetermined aggregate mixing ratio (S201) and operating the optical sensor (S202), the aggregate is started to be supplied into the input hopper (S203) and the inside of the input hopper Of aggregates are piled up above the reference height and the optical sensor is operated (S204) when the aggregate input is stopped (S205), the gate is opened by using the automatic gate control device (S208) aggregates inside the input hopper conveyor belt When the input (S209), the optical sensor is operated again to determine that the aggregate is dropped (S210) when closing the gate (S211) by supplying aggregate again to the input hopper (S203) by the conveyor hopper 20 in the input hopper 20 Automatic aggregate control compounding device, characterized in that provided to enable precise control of the aggregate discharge amount by forming a system.

Images