KR100750465B1 - Apparatus for producing sand by dry type - Google Patents

Abstract

A dry type sand producing device is provided to prevent water pollution and to reduce the producing cost by making the sand by sorting out soil and fine powder mixed in stone dust through a dry method using eddy current and suction of the internal air of a housing. A dry type sand producing device for producing the sand of desirable size by sorting soil and fine powder mixed in stone dust is composed of a housing(10) receiving the crushed stone dust from a hopper(14) and discharging the stone dust through a discharge housing(16); an eddy current generator unit generating an upward eddy current with dispersing the stone dust falling from the hopper in all directions, by rotating plural blades(22) installed in the housing; a dust collector unit sucking the soil and fine dust floating in the housing by the eddy current through a dust collector(36) and discharging the soil and fine dust to the outside; a suction control unit installed at the periphery of the housing with penetrating through the inside, to control the air suction power of the dust collector; and a dryer unit for drying the stone dust filled into a barrel(50) by applying heat from the outside of the barrel. The dryer unit has the barrel having a first moisture discharge port(51) at the lower end of an auxiliary hopper(52) receiving the stone dust; a transfer screw(54) rotatably installed in the barrel to send the stone dust to the hopper by the driving of a motor(M); and an insulation cover(58) provided with a second moisture discharge port(59) and disposed at the outside of the barrel.

Description

Apparatus for producing sand by dry type}

1 is a front sectional view showing a regeneration sand production apparatus according to the prior art,

Figure 2a, 2b is a front sectional view showing the structure and action of the dry sand production apparatus according to the present invention,

3 is a plan view from above of a dry sand production apparatus according to the present invention;

Figure 4 is a partially enlarged perspective view for showing the external configuration of the intake control means according to the present invention.

* Description of Major Symbols in Drawings *

10 housing 14 hopper

16: discharge housing 17: discharge port

20: blade assembly 21: block

22: blade 24: shaft

26: support frame 28: bearing housing

30: dust collector 32: dust collector

34: exhaust pipe 36: dust collector

40: intake control tube 42: intake control plate

44: intake regulator 50: barrel

51: first moisture outlet 52: auxiliary hopper

54: feed screw 56: band heater

58: heat insulation cover 59: second moisture outlet

M: motor

The present invention relates to a sand production apparatus, and more particularly, to produce sand through a dry method using air blowing, vortex and suction action, the dry sand production apparatus to reduce the equipment cost and improve the production efficiency It is about.

In general, sand refers to rock fragments or mineral fragments having a very small diameter, and is divided into quartz sand, black sand, and green sand according to mineral composition, and sand sand according to adult and sedimentation sites. ), Instructors (江 砂), maritime (sea 砂), sand dunes (砂丘 砂), volcanic company (火山灰 砂) is also divided into.

In particular, the instructor and maritime among the sand is used as a very important material for civil engineering and construction, in the early days due to the revitalization of the construction competition could be indiscriminately collected sand.

However, such naturally produced instructors have recently had a problem that it is difficult to meet the demand of sand because a limited amount of collection is limited, and the maritime is also limited due to the damage and destruction of the ecosystem due to the indiscriminate collection of sand. Not only that, there was a problem of low strength of the concrete structure.

In addition, due to the nature of the maritime it is inevitable to collect the work from a long distance, there was also a problem that the supply of sand is not smooth at a large logistics cost.

In order to solve the sand shortage phenomenon, import aggregates have recently been used, but also, as the expenditure on imports of aggregates increases, there has been a need to bear the increase in logistics costs.

In addition, as another method for solving the sand shortage phenomenon, artificial sand was produced in Seoksan or recycled sand (recycling) using waste concrete through construction waste.

In other words, many structures, such as bridges, roads, and various buildings, which have been created in the process of urbanization and industrialization, are gradually aging as time goes by. Occurs.

If landfill is used as such, it is difficult to secure landfill sites, landfill costs are high, and there is a problem that seriously affects the environment. Various measures are being taken to treat the waste.

On the other hand, as a facility for producing sand as described above, a wet production method of washing and sorting the sand, which has undergone the crushing and crushing step, using water, and then purifying the water is adopted.

Figure 1 is a domestic patent registration No. 404922 (name: regeneration sand production equipment using construction waste) showing an example of a conventional recycled sand production equipment, largely vibrating screen 10 and nozzle 30 ), A screw conveyor 20, a water tank 35, a brush conveyor 40, and a sludge conveyor 50.

Briefly described below, first, the building waste put into the hopper 15 is crushed in the form of stone powder and sorted by the vibrating screen 10, and then water is sprayed in the form of a water film on the stone powder using the nozzle 30 to form a primary. After washing, the stone powder is washed secondly while being transferred to the screw conveyor 20 installed in the water tank 35.

Then, the floating garbage floating in the upper portion of the water tank 35 and the sludge settled in the lower portion of the water tank 35 are removed by the brush conveyor 40 and the sludge conveyor 50, thereby producing clean recycled sand.

However, the conventional regeneration sand production apparatus using construction waste adopts the wet production method of washing and sorting sand using water as described above, and purifying the water. there was.

In addition, since the dust generated in the sand production process is washed with a large amount of water, there was a fear of water pollution, there was also a problem that the cost of the production equipment, such as the need to install a separate waste treatment facility.

In addition, in the case of sorting the stone powder using a dry method other than the above-described wet method, when the stone powder to be screened is wet, there is also a problem that it is difficult to sort by the blowing.

The present invention has been made to solve the conventional problems as described above, by producing pure sand through a dry method using the blowing and vortex action and suction action of the air, so as to significantly reduce the cost of sand production equipment It is to provide a dry sand production apparatus.

It is another object of the present invention to provide a dry sand production apparatus that can enhance the sorting efficiency of foreign matter mixed with stone powder by reliably suctioning and discharging soil powder and fine powder diffused and suspended inside the housing to the outside. .

Still another object of the present invention is to provide a dry sand production apparatus that is easy to sort the stone powder by the dry method and improves the sand sorting efficiency accordingly by heating and drying the stone powder before the sorting operation. To provide.

In the configuration of the present invention for achieving the above object, in the apparatus for producing sand and fine powder mixed in the stone powder to produce the desired size of sand, the powdered stone powder from the hopper installed in the upper portion is received at the bottom A housing for discharging to the outside through a mounted discharge housing; A vortex generator unit for generating a vortex in an upward direction while spreading the stone powder falling from the hopper by rotating a plurality of blades provided in the housing by a motor; A dust collector unit installed at the upper end of the housing so that the dust and fine particles suspended in the housing by the vortex are sucked by the dust collector and discharged to the outside; It characterized in that it comprises an intake control means installed to penetrate the inside and around the housing to adjust the air suction force by the dust collector.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

2a to 4 show the dry sand production apparatus of the present invention, the housing 10, the vortex generator unit, the dust collector unit and the intake control means as the main components.

2A and 2B, first, the housing 10 receives the crushed stone powder from the hopper 14 and sorts and discharges the pure sand through the discharge housing 16, and the upper side of the housing 10. The hopper 14 may be mounted on the hopper 14, and a conveyor belt C may be provided on the hopper 14 to supply pulverized stone powder to the hopper 14.

In addition, the bottom of the housing 10 is mounted in close contact with the discharge housing 16 which is formed to be in a narrow light, and the selected sand is discharged through the discharge port 17 at the bottom of the discharge housing 16.

Here, the discharge housing 16 is inserted and mounted around the inside of the pedestal 18 to support the discharge housing 16 spaced apart from the ground by a predetermined distance, and by installing a conveyor belt (C) at the lower end of the discharge housing, The sand is easily supplied. In addition, a step 11 is installed along an upper circumference of the housing 10, and a ladder 12 is installed at a portion of the step 11 downward, so that the motor M is installed on the upper end of the housing 10. To facilitate maintenance of the dust box (30) and the like.

Subsequently, the vortex generator unit rotates and drives the plurality of blades 22 provided in the housing 10 by the motor M, and diffuses the stone powder falling from the hopper 14 in all directions in the upward direction. By generating the vortex, the motor M, the shaft 24, the blade assembly 20, the support frame 26, and the bearing housing 28 are again constituted.

In detail, a motor (M) having a speed reducer is installed at an upper end of the housing (10), and a shaft (24) is rotatably mounted to the center of the upper end of the housing (10) by the driving force of the motor (M). The shaft 24 is installed long in the longitudinal direction inside the housing 10.

Then, the plurality of blade assemblies 20 are mounted at predetermined intervals (preferably equally spaced) at the middle portion of the shaft 24. Here, the blade assembly 20 is composed of a block 21 and a plurality of blades 22, the block 21 is mounted on the shaft 24, a plurality of blades (around the block 21) 22 is provided radially mounted. At this time, the blade 22 is formed so that the vortex in the upward direction when a rotation action is applied.

In addition, a plurality of support frames 26 are radially fixed around the inner surface of the housing 10 so as to pass through the lower center portion of the housing 10. In addition, a bearing housing 28 having a bearing embedded therein is fixed to the center upper end of the support frame 26, and a part of the lower end of the shaft 24 is inserted into the bearing housing 28 to rotate the shaft 24. Support the lower end.

Next, the dust collector unit collects and discharges the dust and fine powder suspended in the housing 10 due to the vortex generation as described above by the dust collector 36, and again collects the dust 30 and the dust collecting tube 32. And an exhaust pipe 34 and a dust collector 36.

Referring to FIGS. 2A to 3, the dust collecting box 30 is provided on the other side of the housing 10 in which the hopper 14 is installed. At this time, the dust collecting box 30 forms a collecting space therein. In addition, one end of each of the dust collecting pipes 32 is provided in communication with each of the bottom and one side of the dust collecting box 30, and the other end of the dust collecting tube 32 is provided in communication with the upper end of the housing 10. Soil dust and fine powder are sucked into the collecting space.

In addition, an exhaust pipe 34 is installed on the other side of the dust collecting box 30 so as to discharge the dust and fine powder sucked through the dust collecting tube 32 to the outside. In addition, the end of the exhaust pipe 34 is connected to the dust collector 36 installed at one side of the housing 10 to suck the soil and fine powder discharged through the exhaust pipe 34 into the dust collector 36.

Here, the dust collector 36 will be described briefly, and refers to a device for collecting and removing particulates of solids and liquids suspended in a gas. And a relatively large one is easy to remove.

There are many kinds of dust collecting methods of dust collectors, such as by gravity, filtering, by inertia and centrifugal force, by using sound waves, and by washing, depending on the type of dust collector, which are largely divided into mechanical and electrical. Is again divided into dry and wet.

Among dry and wet, wet is usually more efficient, and more efficient is electric. Representative of the above-described electric dust collector is a coatrel, and a method of collecting particulates by electricity by applying a high voltage to a dust collecting electrode such as a tube, a plate, a rod, and a wire and passing a gas containing fine particles therebetween.

The dust collector 36 used in the present invention can use any of the dust collectors according to the above-described dust collection method, and not any one specific dust collector is used in the configuration of the present invention.

Subsequently, the intake adjusting means is installed around the housing 10 so as to adjust the suction force of the air by the dust collector 36, and again the intake adjusting pipe 40, the intake adjusting plate 42, and the intake adjusting opening. It consists of 44.

Referring to Figure 2a, 2b and 4, while installing a plurality of intake control pipe 40 along the lower periphery of the housing 10 (in the present invention five installed at equal intervals), the intake control pipe 40 Is installed in communication with the interior of the housing (10). In addition, both sides of the intake control plate 42 are mounted inside the intake control tube 40 so as to be rotatable about the center of the intake control plate 42, and through the rotation action of the intake control plate 42. The intake control tube 40 is opened and closed.

In addition, a portion of the intake control tube 40 on which the intake control plate 42 is mounted is equipped with an intake control port 44 that is easily rotated such as a butterfly nut to smoothly rotate the intake control plate 42. It becomes possible.

On the other hand, when the stone powder introduced into the dry sand production apparatus of the present invention is wet, it is difficult to separate the soil powder through a dry method, if the stone powder is wet as described above, the band heater 56 on the hopper 14 upper portion The drying device is added to dry the stone powder by the heat of).

2A to 3, the drying apparatus unit includes an auxiliary hopper 52, a barrel 50, a transfer screw 54, a band heater 56, an insulation cover 58, and a motor ( It is composed of M), the auxiliary hopper 52 is installed in the lower portion of the conveyor belt (C) is installed, the barrel hopper 50 is formed inside the auxiliary hopper 52 is hollow communication is installed.

The barrel 50 has one end lower end in communication with the upper end of the hopper 14, and the plurality of first moisture outlets 51 are formed on the upper end of the barrel 50 at equal intervals to form the band heater 56. The water discharged by heating is configured to be discharged to the outside of the barrel 50.

In addition, a feed screw 54 is installed in the barrel 50, and a motor M is provided at the end of the feed screw 54, and the powdered powder introduced into the barrel 50 in the hopper 14 direction. It is configured to be transported and put, and installed around the outer circumferential surface of the barrel 50 in the form of wrapping a plurality of band heaters 56 at equal intervals to dry the stone powder passing through the barrel 50.

In addition, a heat insulation cover 58 is installed on the outer side of the barrel 50 so as to cover the band heater 56, and a plurality of second moisture outlets 59 are disposed on the top of the heat insulation cover 58 at equal intervals. It is formed to be configured to discharge the water discharged through the first water outlet 51 to the outside of the heat insulating cover (58).

Referring to the operation and effect of the present invention configured as described in detail as follows.

In order to produce sand using the dry sand production apparatus of the present invention, stone powder is introduced into the hopper 14. At this time, when the stone powder is wet, the stone powder is dried through the drying device unit and then put into the housing 10. Hereinafter, the operation of the embodiment provided with the drying device unit will be described.

That is, as shown in Figure 2a through the conveyor belt (C) is injected into the auxiliary hopper 52 the diameter of 3mm or less, the stone powder is introduced into the barrel 50, the stone powder introduced into the barrel 50 is transferred. By the rotational action of the screw 54, the feed is gradually carried in the hopper 14 direction.

At this time, the band heater 56 is wound around the barrel 50 so that the stone powder to be transported is continuously heated, thereby drying the stone powder during transport. In addition, the moisture generated during drying is discharged to the outside through the first and second moisture discharge ports 51 and 59, and the heat loss of the band heater 56 is blocked through the insulating cover 58.

As described above, the heated and dried stone powder is introduced into the hopper 14 while advancing toward the hopper 14 as described above, and the injected stone powder falls into the housing 10 and rotates at a high speed. It hits the upper surface of the blade 22 and is diffused in all directions. Then, the diffused stone powder is strongly impinged on the inner surface of the housing 10 while floating the fine powder and fine powder adhering to the stone powder inside the housing 10.

At this time, the blade 22 is rotated while forming a vortex in the upward direction, the soil and fine powder suspended in the air rises upward. In addition, the soil and fine powder suspended as described above is sucked into the dust collector 30 through the dust collecting tube 32 by the strong suction force of the dust collector 36, and the soil and the fine powder sucked into the dust collector 30 are exhaust pipes. It is sucked into the external dust collector 36 through the 34.

Here, when the dust collector 36 sucks air in the housing 10, the suction control plate is rotated to determine the opening and closing of the intake control tube 40, thereby adjusting the air suction force of the dust collector 36. .

Through this action, the light weight and fine powder are discharged to the outside to be sorted out with sand, and the heavy stone powder is discharged to the outside through the discharge port 17 at the bottom of the discharge housing 16 to discharge sand of a certain standard. It can be produced, and sand of a certain size can be used immediately or mixed with 5 ~ 6mm thick sand to be used as building material.

In other words, the dry sand production apparatus of the present invention, as described above, completely selects the soil and fine powder mixed in the stone powder by the dry method through the vortex action and the suction action of the air.

Therefore, like the sand production method using the wet method, the washing and drying process of the soil and fine powder is not necessary at all, thus reducing the cost of installing the production equipment, and also the sludge treatment process after the washing of the stone powder. Therefore, there is no fear of water pollution, and it is possible to further reduce the overall costs required for sand production.

Moreover, the dry sand production apparatus of the present invention can adjust the suction force of the dust collector 36 through the suction control means, it is possible to adjust the size of the soil and fine powder to be sucked. Therefore, it is possible to freely control the size of the sand to be produced, thereby more reliably performing the sorting operation of the soil and fine powder, and at the same time it is possible to significantly improve the sand production efficiency according to the selection.

In addition, in the dry sand production apparatus of the present invention, when the stone powder to be screened is wet with moisture, the powdered stone is heated and dried by a band heater 56 of the drying apparatus to be added and sorted into the housing 10. In this way, the fine powder and clay powder mixed with the stone powder can be selected more perfectly.

On the other hand, the present invention has been described in detail only with respect to the specific examples described above it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, it is natural that such variations and modifications belong to the appended claims. .

As described above, according to the present invention, sand and fine powder mixed in the stone powder are produced by sand through the vortex action and the suction action of the air inside the housing, thereby producing sand. Since the sludge treatment process after washing the stone powder is not necessary, there is no fear of water pollution and the like, and it is possible to reduce all costs required for sand production.

Moreover, the suction force of the dust collector can be adjusted through the suction control means, and thus the size of the soil and fine powder to be sucked can be adjusted. Therefore, it is possible to freely adjust the size of the sand to be produced, thereby performing a more reliable sorting operation of the soil and fine powder, and at the same time has the effect of significantly improving the sand production efficiency according to the selection.

In addition, when the stone powder to be sorted is wet with moisture, the stone powder is heated and dried by a band heater in the drying device, and then introduced into the housing and sorted, so that fine powder and soil powder mixed in the stone powder are more completely sorted. There is also an effect that can be done.

Claims (6)

delete delete delete A housing for selecting the ground powder and fine powder mixed with the stone powder and receiving the ground powder from the hopper to produce sand of a desired size and discharging it to the outside through the discharge housing; A vortex generator unit for generating a vortex in an upward direction while spreading the stone powder falling from the hopper by rotating the plurality of blades provided in the housing in all directions; A dust collector unit for sucking dust and fine powder suspended in the housing by the vortex by a dust collector and discharging it to the outside; And an intake control means installed to penetrate the inside and around the housing so as to control the air suction force by the dust collector, and having a barrel having a first water outlet at the bottom of the auxiliary hopper into which the powder is injected. The transfer screw is rotatably installed in the barrel through the driving of the stone to transfer the stone powder to the hopper and at the same time by applying heat from outside the barrel to dry the stone powder inside the barrel, the outer cover having a second moisture outlet on the outer barrel In the dry sand production apparatus further comprises a drying unit provided, The intake control means, A plurality of intake control tubes (40) installed in communication with the inside of the lower portion of the housing (10); An intake control plate 42 rotatably installed therein so as to open and close the intake control tube 40; It is configured to include an intake control port 44 installed on the intake control pipe 40 so as to be connected to the intake control plate 42 to rotate, The drying device unit, Drying the stone powder passing through the barrel 50, dry and characterized in that the plurality of band heaters 56 fixedly mounted at equal intervals in a form to wrap the outer peripheral surface of the barrel 50 to be introduced into the hopper 14 Sand production equipment. delete delete

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