KR20060115410A - The device for washing gravels using construction - Google Patents

Abstract

A construction gravel washing device is provided to wash off foreign materials of gravels by spraying the compressed air and abrasive materials from an air cleaning unit and a blasting unit and then collecting the removed foreign materials in a dust collecting/separating unit. The construction gravel washing device(1) is composed of a transfer unit(15) for transferring the polluted gravels supplied through a hopper(5); air cleaning units(20,40) for separating foreign materials stuck on the surface of the gravels by jetting the compressed air to the polluted gravels delivered by the transfer unit; a blasting unit(30) for removing the foreign materials of the surface of the polluted gravels by spraying the abrasive material to the gravels cleaned by the air; and a dust collecting/separating unit(50) for collecting and separating the foreign materials removed by spraying the abrasive material and the abrasive material.

Description

The device for washing gravels using construction}

1 is a schematic view showing a gravel washing apparatus of the present invention.

Figure 2 is a perspective view of the cutting unit of the gravel washing apparatus of the present invention.

Figure 3 is a block diagram of a dust collecting / separating unit of the gravel washing apparatus of the present invention.

Figure 4 is a cross-sectional view of the dust collecting device of the dust collecting / separating unit according to the present invention.

Figure 5 is an embodiment of the gravel washing apparatus of the present invention.

Figure 6 is a detailed view of the water washing unit and drying unit of the exemplary configuration of the gravel washing apparatus shown in FIG.

Figure 7 is a state diagram showing the washing of the gravel during the operation of the gravel washing apparatus according to the present invention.

8 is a state diagram showing the separation process of the foreign matter and the abrasive and the dust collection process of the foreign material during the operation of the gravel washing apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

1, 1a. Gravel Washer 5. Hopper

10. Control motor 15. Transfer unit

16. Screen conveyor 20, 40. Air cleaning unit

21. Compressors 22, 22a, 42, 42a. Air Spray Nozzle

23, 23a, 43, 43a. Suction header 24, 24a, 34, 34a. Solenoid valve

30. Blasting units 32, 32a. Blasting nozzle

33, 33a. Suction Header 50. Dust Collector / Separation Unit

51. Collector 52, 66. Filter body

53. Abrasive storage tank 55, 57, 58. Suction pump

60. Dust Collector 61. Housing

62. Dust collection filter 63. Filter support network

64. Filter mounting hole 65. Foreign material collection box

67. Exhaust port 70. Sorting unit

71. Oscillator 75. Water washing unit

76. Water pipe 77. Water spray nozzle

80. Drying Unit 81. Hot Air Dryer

83. Heater Heater

The present invention relates to a device for cleaning the surface of the gravel used as construction materials, and more specifically, to remove the foreign substances on the surface of the gravel surface by spraying compressed air to the contaminated gravel transported through the conveying conveyor of the construction gravel washing apparatus By installing an air cleaning unit and a blasting unit spraying abrasive on the contaminant gravel to remove foreign substances on the gravel surface, the upper and lower sides of the contaminant gravel are installed, so that the compressed air and the abrasive injected from the air cleaning unit and the blasting unit in one direction The foreign matter removed by the dust is collected in the dust collecting / separating unit through the vacuum suction of the air cleaning unit and the blasting unit in the other direction, including the stone powder through the injection and vacuum suction action of the compressed air / abrasive of the gravel washing apparatus In addition to completely removing foreign matter on the surface of the gravel, contaminants compared to conventional washing of gravel (Hereinafter referred to as gravel washing devices also) for a large construction gravel to allow to avoid the environmental pollution washing apparatus relates to a.

In general, a large portion of gravel used by construction companies (including ready-mix concrete manufacturing industry) is supplied with foreign matter (stone powder, soil, etc.) on the surface, where the gravel and various cements and sands are mixed. As a way to enhance the cohesion of water, it is washed by a wet method such as washing with water using a water washing treatment device on gravel with foreign substances.

In addition, depending on the type of foreign matter on the surface of the gravel in the process of washing the gravel through the water washing treatment device may be mixed with the cleaning agent for cleaning the gravel by mixing the foreign matter.

The gravel thus washed is mixed with cement, sand, etc. and poured into concrete or used to form a structure, where the gravel serves to maintain the strength of the concrete and to maintain the sintering of each compound.

However, in the case of the gravel washed through the water washing treatment device as described above, as the water content in the gravel due to the water washing increases, the sintering action with each compound is not smoothly performed, and the strength of the concrete There was a big problem such as to be greatly weakened.

In addition, when the sintering action of the water-containing gravel and each compound as described above, there is a problem that the bubbles caused by the water is greatly reduced, thereby causing a decrease in the strength of the concrete strength.

Then, when the gravel is washed through the water washing treatment apparatus and the polluted water containing foreign matters such as stone powder is discharged into the stream, the aquatic animals are caused by the contaminated water and the collective death occurs due to the serious water pollution. There was also a problem that seriously affected the environmental pollution.

Furthermore, when the chemicals are mixed in the washing water to remove the foreign substances on the surface of the gravel in the process of washing the gravel through the water washing treatment device, it is used for washing the gravel to increase the acidity of the water or eutrophication of the water. There was also a problem that caused the water pollution to accelerate.

The present invention has been made in order to solve the above problems, the air cleaning unit to remove the foreign matter on the gravel surface by spraying compressed air to the contaminated gravel transported through the conveying conveyor of the construction gravel washing apparatus, and the pollution The blasting unit which sprays the abrasive on the gravel to remove foreign substances on the surface of the gravel is installed on the upper and lower sides of the contaminant gravel, so that the foreign substances removed by the compressed air and the abrasive injected from the air cleaning unit and the blasting unit in one direction Through the vacuum suction of the air cleaning unit and the blasting unit in the direction, the dust collection / separation unit is collected, such as the compressed air / abrasives of the gravel washing apparatus and the vacuum suction action to completely remove the foreign substances on the gravel surface including the stone powder. In addition to the environmental pollution by significantly reducing the pollutants compared to the conventional washing of gravel Which aims to to prevent.

In addition, in the gravel washing apparatus of the present invention, the sintering of the surface polished gravel and the compound (cement, sand) during blending in the ready-mixed concrete due to the surface polishing effect of the gravel according to the abrasive injection is smoothed In addition to the increase in the pouring strength, there is another purpose to increase the life of the building or structure according to the increase in the pouring strength.

In addition, when the water washing unit and the drying unit are additionally applied to the gravel washing apparatus of the present invention, the surface state of the gravel from which the foreign matter is removed through the air washing unit and the blasting unit is applied to the water washing unit and the drying unit. There is another object to further improve the sintering action with the above-mentioned blends by making them more clean.

Gravel cleaning device of the present invention, the transfer unit for transferring the contaminated gravel supplied through the hopper;

An air cleaning unit which sprays compressed air to the contaminant gravel conveyed through the transfer unit to remove foreign substances on the gravel surface;

A blasting unit for spraying abrasives on the air-cleaned gravel to remove foreign substances on the gravel surface;

Characterized in that composed of a dust collector / separation unit for collecting and separating the foreign matter and abrasive removed by the abrasive injection.

At this time, the rear of the blasting unit is characterized in that the air cleaning unit is further provided for cleaning the surface of the gravel by spraying compressed air to the gravel from which the foreign matter is removed through the abrasive injection.

And, the transfer unit of the gravel washing apparatus of the present invention is characterized in that the screen conveyor is formed in the form of a polygonal net or perforated plate so that foreign matter falls down the gravel by the abrasive abrasive.

In addition, the air cleaning unit of the gravel washing apparatus of the present invention comprises a compressor for compressing air to supply compressed air on the blasting unit and the air cleaning unit; Air spray nozzles respectively installed on upper and lower sides of the transfer unit and spraying compressed air supplied from a compressor to contaminants to remove foreign substances on the gravel surface; A suction header installed at the rear of each of the air spray nozzles, and configured to suck foreign substances escaped by the injected compressed air through the suction force of the dust collecting / separating unit; And a control motor configured to control the solenoid valve between the compressor and the air spray nozzle so that the compressed air of the compressor can be switched to the upper or lower air spray nozzle.

In addition, the control motor controls the solenoid valve between the suction header and the dust collecting / separation unit when switching compressed air from the compressor to the upper or lower air spray nozzle from the compressor, so as to face the air spray nozzle on the one side. It is characterized in that connected to the solenoid valve so that the suction force can be generated.

In addition, the blasting unit of the gravel washing apparatus of the present invention is installed on the upper and lower sides of the transfer unit in a state connected to the compressor, and supplied from the abrasive storage tank of the compressor and the dust collector / separation unit to contaminate the abrasive mixed with the compressed air. A blasting nozzle sprayed on to remove foreign substances on the gravel surface; It is installed in the rear of each blasting nozzle, and consists of a suction header for suctioning the foreign matter and abrasive removed by the abrasive injection through the suction force of the dust collecting / separating unit, the abrasive mixed with the compressed air is the solenoid valve control of the control motor It characterized in that it is configured to be supplied by switching to the upper or lower blasting nozzle by.

Meanwhile, the dust collecting / separating unit of the gravel washing apparatus of the present invention includes: a collecting cylinder for collecting foreign substances and abrasives sucked through each suction header of the air cleaning unit and the blasting unit; A filter body installed in the collecting cylinder to separate the collected foreign matter and the abrasive; An abrasive storage tank connected to one side of the collection cylinder and sucked and stored through a suction pump to recycle the abrasive separated by a filter body; Characterized in that it comprises a dust collecting device for collecting the foreign matter discharged to the lower side of the filter body through the suction action of the suction pump installed in the lower collecting cylinder.

And, the filter body in the collection cylinder and the primary filter for separating and separating the collected foreign matter and the recyclable abrasive material; Characterized in that the secondary filter for separating and separating the fine particles and the non-recyclable abrasive among the foreign matter and abrasive separated and discharged by the primary filter body.

In addition, the abrasive storage tank is characterized in that the abrasive is supplied to the blasting nozzle by gravity, or by installing a suction pump at the bottom of the abrasive storage tank, the abrasive is supplied to the blasting nozzle by the suction force of the suction pump. .

In addition, the dust collecting device has a housing formed in a hollow shape so that the dust collecting filter is embedded; A dust collecting filter installed in the housing to collect dust among the foreign substances discharged under the filter body; A filter support network which supports the dust collecting filter and filters foreign substances that immediately fall without passing through the dust collecting filter; A foreign matter collection form of a cassette form detachably installed at a lower end of the housing to collect foreign matters falling through the dust collecting filter and the filter support network; Compressed air in the filtered housing is characterized in that consisting of an exhaust port installed on one side of the upper end of the housing with a filter body to be discharged to the outside while the final filtering.

And, in the gravel washing apparatus of the present invention, the sorting unit for screening the size of the contaminated gravel introduced through the hopper, or the size of the cleaning gravel removed foreign matter through the blasting unit is further provided, the screening The unit is installed on both ends of the transfer unit is characterized in that the vibrator to select the size of the gravel by causing the vibration up and down / left and right.

In addition, in the gravel washing apparatus of the present invention, the rear of the air cleaning unit is further provided with a water washing unit for washing the surface of the gravel by spraying the washing water to the gravel washed the surface through the injection of compressed air, The water washing unit includes a water pipe to which a predetermined water pressure is applied; Installed at one end of the water pipe is characterized in that consisting of a water spray nozzle for washing the water by spraying the washing water to the gravel supplied by the transfer unit.

Furthermore, in the gravel washing apparatus of the present invention, there is further provided a drying unit for evaporating moisture according to the humidity-containing state of the water washed through the water washing unit, the drying unit is supplied by hot air supply by fan drive A hot air dryer for evaporating moisture in the gravel; It is characterized by consisting of a heater heater for evaporating the moisture in the gravel by the heating action by the heating wire.

On the other hand, the abrasive applied to the gravel washing apparatus of the present invention is characterized by consisting of any one of sand, plastic, silica, iron ball, dry ice, ice, grains in the form having particles.

Hereinafter, the gravel washing apparatus of the present invention will be described in detail.

1 is a schematic view showing a gravel washing apparatus of the present invention, Figure 2 is a perspective view showing a cutaway of the transfer unit of the gravel washing apparatus of the present invention, Figure 3 is a dust collecting / separating unit of the gravel washing apparatus of the present invention It shows the configuration diagram.

In addition, Figure 4 shows a cross-sectional view of the dust collector of the dust collector / separation unit according to the present invention.

Gravel cleaning device 1 of the present invention, as shown in Figure 1, the transfer unit 15 for transporting the contaminant gravel supplied through the hopper 5; An air cleaning unit 20 for spraying compressed air onto the contaminant gravel transferred through the transfer unit 15 to remove foreign substances on the gravel surface; A blasting unit 30 for spraying abrasives on the air-cleaned gravel to remove foreign substances on the gravel surface; It is composed of a dust collecting / separating unit 50 for collecting and separating the foreign matter and abrasive removed by the abrasive injection.

At this time, the rear side of the blasting unit 30 is further provided with an air cleaning unit 40 for washing the surface of the gravel by spraying compressed air to the gravel from which foreign matter is removed by abrasive injection, the hopper (5) Separation unit 70 for sorting the size of the gravel and the washed gravel and through the air cleaning unit 20, 40 and the blasting unit 30 to clean the gravel from which foreign matters were removed by washing water. A water washing unit 75 and a drying unit 80 for evaporating moisture to adjust the humidity content in the gravel washed by the water washing unit 75 are installed on the gravel washing apparatus 1 of the present invention. In this case, since the air cleaning unit 40 installed in the rear of the blasting unit 30 has the same configuration as the air cleaning unit 20 installed in front of the blasting unit 30 Front of blasting unit 30 Instead of the detailed description of the air cleaning unit 20 installed in.

In addition, in the case of the sorting unit 70 and the water washing unit 75 and the drying unit 80 additionally installed in the gravel washing apparatus 1 of the present invention, the sorting unit 70 and the water washing unit, which will also be described later, 75, it will be described in detail on the drying unit (80).

Among the components of the gravel washing apparatus 1 configured as described above, the transfer unit 15 blasts contaminant gravel supplied into the gravel washing apparatus 1 through the hopper 5 with the air washing unit 20. As an element for conveying to the unit 30 side, as shown in FIG. 2, the foreign matter can be dropped below the gravel by the compressed air and the abrasive injected through the air cleaning unit 20 and the blasting unit 30. It is formed of a screen conveyor 16 to form a chain structure of the network, wherein the screen shape of the screen conveyor 16 is formed in a polygonal form or a porous plate form.

In addition, in the case of the screen conveyor 16 manufactured as described above, when the contaminated gravel is supplied to the screen conveyor 16 through the hopper (5), gravel or stone powder having a smaller size than the net of the screen conveyor (16) And foreign matters detached from the surface of the gravel fall down the gravel through the net, and have a screening function such that only gravel larger than the size of the net can be transferred to the washing process.

And, the air cleaning unit (20, 40) of the gravel washing apparatus 1 of the present invention, as the element to escape the foreign matter on the gravel surface by spraying compressed air to the contaminant gravel transferred through the transfer unit 15, As shown in FIG. 1, a compressor 21 for compressing air to supply compressed air to the blasting unit 30 and the air cleaning units 20 and 40; Air spray nozzles 22, 22a, and 42 are respectively installed on the upper and lower sides of the transfer unit 15 and spray the compressed air supplied from the compressor 21 to the contaminants through the connecting pipe to remove foreign substances on the gravel surface. 42a); A suction header (23, 23a) installed at the rear of each of the air spray nozzles (22, 22a, 42, 42a), and suctioning foreign substances peeled off by the injected compressed air through the suction force of the dust collecting / separating unit (50); 43,43a); Between the compressor 21 and the air spray nozzles 22, 22a, 42, 42a so that the compressed air of the compressor 21 can be switched to the upper or lower air spray nozzles 22, 22a, 42, 42a. It consists of the control motor 10 which controls the solenoid valves 24 and 24a.

In the case of the control motor 10, the suction headers 23, 23a, 43 when the compressed air is switched and supplied from the compressor 21 to the upper or lower air spray nozzles 22, 22a, 42, 42a. Suction heads (23, 23a, 43, 43a) opposed to the air spray nozzles (22, 22a, 42, 42a) on one side by controlling the solenoid valves (34, 34a) between the (43a) and the dust collection / separation unit (50). Is connected to the solenoid valves 34 and 34a on the connection pipes connecting the suction headers 23, 23a, 43, 43a and the dust collecting / separation unit 50 so that suction force can be generated. As described above, the solenoid valves 24 and 24a connected to the compressor 21 and the air spray nozzles 22, 22a, 42 and 42a, and the suction headers 23, 23a, 43 and 43a are collected. Control the opening and closing of the solenoid valves 34 and 34a on the connecting pipes connecting the separation / removal units 50, the air pressure of the compressor 21 and the discharge amount of the abrasive, and the air spray nozzles 22, 22a, 42 and 42a. ) And blasting nozzles (32, 32a) Thereby controlling (Swing).

In addition, the blasting unit 30 of the gravel washing apparatus 1 of the present invention, by spraying the abrasive on the gravel washed through the air cleaning unit 20 to completely remove the foreign substances on the surface of the gravel and at the same time sharp edges of the gravel As the element to be polished, as shown in Figure 1, is installed in the upper and lower sides of the transfer unit 15 in a state connected to the compressor 21, the abrasive storage tank of the compressor 21 and the dust collecting / separating unit 50 Blasting nozzles (32, 32a) for spraying abrasives mixed with compressed air from 53 to spray contaminants to remove foreign substances on the gravel surface; It is installed at the rear of each blasting nozzle (32, 32a), and consists of suction headers (33, 33a) for sucking the foreign matter and abrasive removed by the abrasive injection through the suction force of the dust collecting / separating unit 50, The abrasive mixed with the compressed air is configured to be supplied to the upper or lower blasting nozzles 32 and 32a by controlling the solenoid valves 24 and 24a of the control motor 10.

In addition, in the case of abrasives sprayed on the surface of the gravel through the blasting nozzles 32 and 32a, all forms having particles are used. Examples of the abrasives include sand, plastic, silica, iron balls, dry ice, and ice. Grains, etc. will be used.

Meanwhile, the dust collecting / separating unit 50 of the gravel washing apparatus 1 of the present invention collects the foreign substances and abrasives removed through the abrasive spray and at the same time separates the foreign substances and the abrasives through filtering to obtain good abrasives, that is, The recyclable abrasive is stored in the abrasive storage tank 53 to be reused to remove foreign matters from the gravel. As shown in FIG. 3, the air cleaning units 20 and 40 and the blasting unit ( A collection cylinder 51 for collecting foreign matter and abrasives sucked through the suction headers 23, 23a, 33, 33a, 43, 43a of 30); A filter body 52 installed in the collection cylinder 51 to separate the collected foreign matter and the abrasive; An abrasive storage tank 53 connected to one side of the collection cylinder 51 to be sucked and stored through the suction pump 55 to recycle the abrasive separated by the filter body 52; It is composed of a dust collecting device 60 for collecting the foreign matter discharged below the filter body 52 through the suction action of the suction pump 58 installed below the collecting cylinder 51.

Here, in the case of the filter body 52 installed in the collecting cylinder 51, the primary filter (52a) for separating and separating the collected foreign matter and the recyclable abrasive; It consists of a secondary filter (52b) for separating and separating the fine particles and the non-recyclable abrasive among the foreign matter and abrasive separated and discharged by the primary filter.

In addition, in the case of the abrasive storage tank 53, the overall shape is formed of a hollow cylindrical body, the suction pipe 55 of the connecting pipe connecting the collecting cylinder 51 and the abrasive storage tank 53 on the outer peripheral surface of the cylindrical body. An abrasive inlet 54 is formed through the filtering action of the filter body 52 in the collecting cylinder 51 to allow the abrasive separated from the foreign matter to be sucked and stored into the cylindrical body. The abrasive discharge port 54a is formed to be discharged to the blasting nozzles (32, 32a) side.

Further, in the case of the abrasive storage tank 53, the abrasive is supplied to the blasting nozzles 32, 32a by gravity, or the suction pump 57 to the lower connection pipe of the abrasive storage tank 53 as shown in FIG. By installing a so that the abrasive is supplied to the blasting nozzle (32,32a) by the suction force of the suction pump (57), at this time to adjust the discharge amount of the abrasive discharged through the abrasive discharge port at the lower end of the abrasive storage tank (53) The solenoid valve 56 which controls opening / closing by the control motor 10 is provided so that it may be controlled.

In addition, in the case of the dust collecting device 60, as the element to collect the foreign substances discharged downward through the filter body 52 through the suction action of the suction pump 58 installed below the collecting cylinder 51, as shown in FIG. As shown, the housing 61 is formed in a hollow shape so that the dust collecting filter 62 is embedded; A dust collecting filter 62 installed in the housing 61 to collect dust among the foreign substances discharged below the filter body 52; A filter support network (63) for supporting the dust collecting filter (62) and filtering foreign matter that immediately falls without passing through the dust collecting filter (62); A debris collection bin (65) detachably installed at a lower end of the housing (61) to collect debris that has fallen through the dust collecting filter (62) and the filter support network (63); Compressed air in the filtered housing 61 is composed of an exhaust port 67 installed on the upper side of the housing 61 together with the filter body 66 to be discharged to the outside while the final filtering.

At this time, in the case of the foreign material collection box 65, coupling protrusions 65a are formed at both sides of the foreign material collection box 65 so that detachment is possible by sliding coupling from the lower end of the housing 61, and the foreign material collection box 65 Sliding coupling grooves 61a corresponding to the coupling protrusions 65a formed on both sides of the foreign matter collection box 65 are formed at both sides of the lower ends of the housing 61 to be slidingly coupled.

In addition, in the case of the filter support network 63 supporting the dust collecting filter 62, the suction pump 58 installed under the collecting cylinder 51 flows into the housing 61 of the dust collecting device 60. After the filtered air and foreign matter is filtered through the exhaust port 67 is discharged to the outside in a state of being discharged by the flow rate of the air to be coupled to the inside of the housing 61 or fixed by bolted fastening, the filter support network ( 63) In the center, a filter seating hole 64 through which the lower part of the dust collecting filter 62 can be inserted and fixed is penetrated.

In addition, the dust collecting filter 62 supported by the filter support net 63 is also inserted into the filter seating hole 64 of the filter support net 63 and from the filter seating hole 64 of the filter support net 63. Both ends of the dust collecting filter 62 are fixed by bolts so as not to be separated by the flow rate of air introduced into the housing 61.

Figure 5 shows an embodiment of the gravel washing apparatus of the present invention, Figure 6 shows a detailed view of the water washing unit and drying unit of the exemplary configuration of the gravel washing apparatus shown in FIG.

Next, as a configuration of the embodiment for the gravel washing apparatus 1a of the present invention, which screens the size of the gravel and washed gravel introduced through the hopper 5 in addition to the gravel washing apparatus 1a of the present invention. And a water washing unit 75 for washing the gravel from which foreign substances have been removed through the air washing unit 40 and the blasting unit 30 with washing water, and the water washing unit 75. In order to control the humidity content in the washed gravel by the drying unit 80 to evaporate the moisture is installed, the sorting unit 70, the water washing unit 75, the drying unit 80 in detail The explanation is as follows.

Separation unit 70 applied to the gravel washing apparatus 1a of the present invention, as shown in Figure 5, the transfer unit 15, that is, installed on both sides of the screen conveyor 16, the screen conveyor 16 by vibration As a vibrator (71) to cause the up and down / left and right tremors of the), causing the vertical / left and right vibration of the screen conveyor 16 through the vibrator 71, the contaminant gravel or blasting unit 30 introduced through the hopper (5) Gravel or fine powder smaller than the screen size of the screen conveyor 16 falls out of the screen conveyor 16 among the scuffed gravel from which foreign matter is removed through the screen, and the gravel larger than the screen size of the screen conveyor 16 is screen conveyor. The size of the gravel is sorted by the vibration of the screen conveyor 16 by the sorting unit 70 and the like remaining on the 16.

In addition, the water washing unit 75 applied to the gravel washing apparatus 1a of the present invention is installed at the rear of the air washing unit 40 until the fine amount of the remaining amount by the compressed air injected from the air washing unit 40 In order to double the washing effect of the washed-off gravel, that is, dry-cleaned gravel, the washing water is sprayed on the air-cleaned gravel to wash the surface of the gravel, as shown in FIGS. 5 and 6. A water pipe 76 to which hydraulic pressure is applied; It is composed of a water spray nozzle (77) installed at one end of the water pipe (76) to spray washing water to the gravel supplied by the transfer unit 15 to wash the water.

At this time, in the case of the water spray nozzle 77, a spray jet nozzle having a large washing water spray angle is used, and a spiral nozzle or a fog nozzle may be used depending on the degree of diffusion.

In addition, the drying unit 80 applied to the gravel washing apparatus 1a of the present invention is installed at the rear of the water washing unit 75 according to the humidity-containing state of the water washed through the water washing unit 75. As an element for promoting vaporization of water, as shown in Figs. 5 and 6, a hot air dryer 81 for evaporating water in the gravel by hot air supply by driving the fan 82; It consists of the heater heater 83 which evaporates the moisture in gravel by the heat | fever action | action by the heating wire 84.

At this time, the drying method by the drying unit 80 is used in combination with the hot air drying method by the hot air dryer 81 and the hot wire drying method by the heater heater 83, in particular the moisture content of the gravel by water washing In a low or low humidity working environment, only the hot air drying method by the hot air dryer 81 is used, and when the drying effect cannot be exerted using the hot air drying method, that is, a humid workplace (eg, underground construction, etc.). In the rainy season, the drying operation of the gravel is performed using both the hot air drying method and the hot wire drying method.

In the case of the hot air dryer 81 of the drying unit 80 configured as described above, the hot air dryer 81 is disposed at an upper side of the gravel upper part, that is, the screen conveyor 16 so that heat is transmitted in a shower method, and according to the amount of the hot air drying line, Determine and use the number

In addition, when the working space is narrow or it is difficult to install the device, it is possible to generate heat using the hot air line of the hot air dryer 81 instead of the heater heater 83 of the drying unit 80.

Hereinafter, an operation process for the gravel washing apparatus of the present invention will be described in detail.

Figure 7 is a state diagram showing the washing of the gravel during the operation of the gravel washing apparatus according to the present invention, Figure 8 shows the separation process of foreign matter and abrasives during the operation of the gravel washing apparatus according to the present invention and the dust collection process of the foreign matter State diagram.

First, prior to explaining the operation process of the gravel washing apparatus 1 according to the present invention, the sorting unit 70, the water washing unit 75, the drying unit (additionally installed in the gravel washing apparatus 1) 80) will be described as the operation process in the excluded state, the injection of the compressed air and the abrasive for removing foreign matter on the surface of the gravel is to be made in the upper air injection nozzle 22 and the upper blasting nozzle 32 for convenience.

When the contaminated gravel is supplied to the top of the screen conveyor 16 through the hopper 5 to clean the contaminated gravel through the gravel washing apparatus 1 of the present invention, the screen conveyor 16 that rotates through a motor drive. The contaminated gravel is transferred to the air cleaning unit 20 by the transfer force of the screen conveyor 16 while the contaminated gravel is supplied to the screen conveyor 16 through the hopper 5. Since it is formed in the form of a net, the gravel having a smaller size than the net of the screen conveyor 16, foreign matters and the like separated from the surface of the gravel fall down the screen conveyor 16 through the net, the net Only gravel larger than the size of the will be transported to the air cleaning unit 20 side.

As such, when the contaminated gravel is transferred to the air cleaning unit 20 through the transfer force of the screen conveyor 16, as shown in FIG. 7, the set air pressure controlled by the control motor is controlled by the control panel. Compressed air is supplied from the compressor 21 to the upper air spray nozzle 22 side through the connecting pipe, and the compressed air supplied to the upper air spray nozzle 22 side is transferred through the screen conveyor 16 as described above. As it is sprayed into the polluted gravel, foreign substances on the gravel surface are first peeled off.

In this process, the foreign substance first peeled off is provided through the lower suction header 23a installed opposite to the upper air spray nozzle 22, that is, the lower suction header 23a acting on the suction force of the dust / separation unit 50. Suction is introduced into the dust collecting / separating unit 50 through a connection pipe connecting the dust collecting / separating unit 50 and the lower suction header 23a.

And, when the air cleaning of the gravel through the air cleaning unit 20 as described above, the air-washed gravel by the transfer force of the screen conveyor 16 is transferred to the blasting unit 30, the compressor ( 21) and the compressed air and the abrasive are supplied from the abrasive storage tank 53 of the dust collecting / separation unit 50 to the upper blasting nozzle 32, respectively, to form a mutually mixed state, and to the upper blasting nozzle 32 as described above. The supplied abrasive material is sprayed onto the air washing gravel transferred to the blasting unit 30 through the screen conveyor 16 by piggybacking the blowing force of the compressed air to completely remove the foreign matter on the gravel surface secondarily.

In this process, the foreign substances and abrasives removed from the gravel surface are provided with the lower suction header 23a installed opposite to the upper blasting nozzle 32, that is, the lower suction header 23a installed opposite to the upper air spray nozzle 22. Similarly, the dust collecting / separating unit is sucked through the lower suction header 33a on which the suction force of the dust collecting / separating unit 50 is applied to connect the dust collecting / separating unit 50 and the lower suction header 33a. 50).

Then, when the process of removing the foreign matter through the abrasive injection of the blasting unit 30 is finished as described above, the fine powder generated while the surface of the gravel is polished by the abrasive injected in the abrasive injection process for removing the foreign matter on the gravel surface In order to clean the surface of the back gravel through the air injection is to be transported to the air cleaning unit 40 installed in the rear of the blasting unit (30).

In this way, if the surface of the surface is polished by the abrasive injected into the air cleaning unit 40 through the conveying force of the screen conveyor 16, the air cleaning located in front of the blasting unit 30 Like the unit 20, the compressed air is supplied from the compressor 21 to the upper air spray nozzle 42 through the connecting pipe, and the compressed air supplied to the upper air spray nozzle 42 as described above is the screen conveyor. While spraying the gravel conveyed through (16) it is to remove the fine powder on the surface of the gravel generated by the abrasive injection in the third.

The fine powder of the gravel removed from the surface of the gravel in this process, such as the lower suction header 43a installed opposite to the upper air spray nozzle 42, that is, the upper air spray nozzle in front of the blasting unit 30 described above. Like the lower suction headers 23a and 33a respectively installed opposite to the 22 and the upper plastic nozzles, the suction / separation unit is sucked through the lower suction header 43a to which the suction force of the dust / separation unit 50 is applied. Through the connection pipe connecting the 50 and the lower suction header 43a is introduced into the dust / separation unit 50.

As described above, foreign substances removed from the gravel surface through the lower suction headers 23a, 33a and 43a, that is, the three lower suction headers 23a, 33a and 43a to which the suction force of the dust collecting / separating unit 50 acts. When foreign matter and abrasives including fine powder flow into the collection cylinder 51 of the dust collecting / separation unit 50, as shown in FIG. 8, the filter body 52 installed in the collection cylinder 51, namely, The primary filter 52a separates and separates the collected foreign matter and the recyclable abrasive, and the secondary filter that separates and separates the fine powder and the non-recyclable abrasive among the foreign matter and abrasive separated and discharged by the primary filter 52a. Recyclable abrasive selected by the primary filter 52a while the foreign matter and the abrasive are separated from each other through the filtering action of 52b is connected to the collection cylinder 51 and the abrasive storage tank 53. Suctioned by the suction pump 55 The foreign matter that is stored in the forage storage tank 53, the foreign matter that has been filtered through the secondary filter 52b through the suction action of the suction pump 58 installed below the collection cylinder 51 is the lower portion of the collection cylinder 51 Discharged into the dust collector 60 connected with the discharge.

When foreign matter is introduced into the dust collector 60 through the secondary filter 52b as described above, the foreign matter is driven from the driving force of the suction pump 58, that is, from the air outlet (not shown) of the suction pump 58. A filter for piggybacking by the blowing force (air flow rate) acting inside the dust collector 60 to support and fix the dust collecting filter 62 installed in the dust collecting device 60, that is, the housing 61 and the dust collecting filter 62. As the foreign matter is filtered by the dust collecting filter 62 and the filter support net 63 while flowing toward the support net 63, small foreign substances and fine powder, which are not filtered, are finally collected in the foreign matter collector 65 installed at the bottom of the filter support net 63. When the dust is to be collected and the air filtered through the dust collecting filter 62 and the filter support network 63 is discharged to the outside through the exhaust port 67 installed on the upper side of the housing 61, it is installed on the exhaust port 67 Finally filtered through the filter body (66) It is discharged.

On the other hand, as described above, during the cleaning process of the contaminated gravel through the gravel washing apparatus 1 of the present invention, the injection of compressed air and abrasive is opposite, that is, the lower air spray nozzles 22a and 42a and the lower blasting nozzle 32a. In order to inject the air into the upper air spray nozzles 22 and 42 and the upper blasting nozzles 32, the compressed air and the path of the abrasive are supplied to the lower air spray nozzles 22a and 42a and the lower blast nozzles 32a. The solenoid valve 24 of the connection pipe connected with each nozzle of the upper side is closed by the control motor 10 control, and the path switching of the compressed air and the abrasive | polishing material as mentioned above is closed, and the connection pipe connected with each nozzle of the lower side is carried out. By opening the solenoid valve 24a, the supply paths of the compressed air and the abrasive are switched, and the solenoid valve 34 on the connection pipe connecting the dust collecting / separating unit 50 and the lower suction headers 23a, 33a, 43a. 34a) By controlling the opening and closing state to the opposite through the control motor 10 to remove foreign substances on the surface of the gravel by using compressed air and abrasives injected from the lower air spray nozzles (22a, 42a) and the lower blasting nozzle (32a).

As described above, the above-described embodiments are described with reference to the most preferred examples of the present invention, but are not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications can be made without departing from the technical spirit of the present invention. .

The gravel washing apparatus of the present invention, an air cleaning unit for spraying the compressed air to the contaminant gravel transported through the conveying conveyor of the construction gravel cleaning device to remove foreign substances on the surface of the gravel, and the abrasive gravel surface by spraying abrasive By installing the blasting unit to remove the foreign matter on the upper and lower sides of the contaminant gravel, the foreign matter to be removed by the compressed air and the abrasive injected from the air cleaning unit and the blasting unit in one direction, the air cleaning unit and the blasting unit in the other direction The vacuum suction of the dust, such as the dust collection / separation unit, such as the compressed air / abrasive material of the gravel washing apparatus and the vacuum suction action to completely remove the foreign matter on the surface of the gravel including stone powder, and the number of conventional gravel Compared to cleaning, there is an excellent effect to significantly reduce the pollutants to prevent environmental pollution.

In addition, in the gravel washing apparatus of the present invention, the sintering of the surface polished gravel and the compound (cement, sand) during blending in the ready-mixed concrete due to the surface polishing effect of the gravel according to the abrasive injection is smoothed In addition to the increase in the pouring strength, there is also an effect that increases the life of the building or structure according to the increase in the pouring strength.

In addition, when the water washing unit and the drying unit are additionally applied to the gravel washing apparatus of the present invention, the surface state of the gravel from which the foreign matter is removed through the air washing unit and the blasting unit is applied to the water washing unit and the drying unit. By further cleaning, there is also an effect that the sintering action with the above-described compound is further improved.

Claims (14)

A transfer unit for transferring the contaminant gravel supplied through the hopper; An air cleaning unit which sprays compressed air to the contaminant gravel conveyed through the transfer unit to remove foreign substances on the gravel surface; A blasting unit for spraying abrasives on the air-cleaned gravel to remove foreign substances on the gravel surface; Construction gravel washing apparatus comprising a dust collecting / separating unit for collecting and separating the foreign matter and abrasive removed by the abrasive injection. The gravel washing apparatus according to claim 1, further comprising an air washing unit at the rear of the blasting unit, the compressed air being sprayed on the gravel from which foreign matter is removed by abrasive injection to clean the surface of the gravel. The gravel washing apparatus according to claim 1, wherein the transfer unit is a screen conveyor formed in the shape of a polygonal net or a perforated plate so that foreign matters may fall down the gravel by the abrasive abrasive. The air cleaning unit of claim 1, further comprising: a compressor for compressing air to supply compressed air to the blasting unit and the air cleaning unit; Air spray nozzles respectively installed on upper and lower sides of the transfer unit and spraying compressed air supplied from a compressor to contaminants to remove foreign substances on the gravel surface; A suction header installed at the rear of each of the air spray nozzles, and configured to suck foreign substances escaped by the injected compressed air through the suction force of the dust collecting / separating unit; The gravel washing apparatus for construction comprising a control motor for controlling the solenoid valve between the compressor and the air spray nozzle so that the compressed air of the compressor can be switched to the upper or lower air spray nozzle. 5. The control motor of claim 4, wherein the control motor is opposed to the air spray nozzle on one side by controlling the solenoid valve between the suction header and the dust collector / separation unit when switching compressed air from the compressor to the upper or lower air spray nozzle. Construction gravel cleaning device, characterized in that connected to the solenoid valve so that the suction force on the suction header. The method of claim 4, wherein the blasting unit is installed in the upper and lower sides of the transfer unit in a state connected to the compressor, by spraying the abrasive mixed with compressed air supplied from the abrasive storage tank of the compressor and the dust collector / separation unit to the contaminated gravel A blasting nozzle for removing foreign substances from the gravel surface; It is installed in the rear of each blasting nozzle, and consists of a suction header for suctioning the foreign matter and abrasive removed by the abrasive injection through the suction force of the dust collecting / separating unit, the abrasive mixed with the compressed air is the solenoid valve control of the control motor The gravel washing device for construction, characterized in that configured to be supplied by switching to the upper or lower blasting nozzle by. 5. The dust collecting apparatus of claim 4, wherein the dust collecting / separating unit comprises: a collecting cylinder collecting foreign matter and abrasives sucked through each suction header of the air cleaning unit and the blasting unit; A filter body installed in the collecting cylinder to separate the collected foreign matter and the abrasive; An abrasive storage tank connected to one side of the collection cylinder and sucked and stored through a suction pump to recycle the abrasive separated by a filter body; Construction gravel cleaning device, characterized in that consisting of a dust collector for collecting the foreign matter discharged down the filter body through the suction action of the suction pump installed in the lower collecting cylinder. 8. The filter assembly of claim 7, wherein the filter body in the collecting cylinder comprises: a primary filter for separating and separating the collected foreign matter and the recyclable abrasive; Construction gravel washing apparatus, characterized in that composed of a secondary filter for separating and separating the fine particles and the non-recyclable abrasives of the foreign matter and abrasives separated and discharged by the primary filter body. The method of claim 7, wherein the abrasive storage tank is configured to supply the abrasive to the blasting nozzle by gravity, or to install the suction pump at the bottom of the abrasive storage tank to supply the abrasive to the blasting nozzle by the suction force of the suction pump. Construction gravel washing apparatus characterized in that. 8. The dust collecting apparatus of claim 7, wherein the dust collecting device comprises: a housing formed in a hollow shape so that the dust collecting filter is embedded therein; A dust collecting filter installed in the housing to collect dust among the foreign substances discharged under the filter body; A filter support network which supports the dust collecting filter and filters foreign substances that immediately fall without passing through the dust collecting filter; A foreign matter collection form of a cassette form detachably installed at a lower end of the housing to collect foreign matters falling through the dust collecting filter and the filter support network; Construction gravel washing apparatus, characterized in that consisting of an exhaust port installed on the upper side of the housing with a filter body so that the compressed air in the filtered housing can be discharged to the outside while the final filtering. According to claim 1, wherein the sorting unit for screening the size of the contaminated gravel introduced through the hopper, or the size of the cleaning gravel from which the foreign matter is removed through the blasting unit is further provided, the sorting unit of the transfer unit The gravel washing device for construction, characterized in that the oscillator is installed on both ends to induce vibration up and down / left and right to select the size of the gravel. According to claim 2, The rear of the air cleaning unit is further provided with a water washing unit for washing the surface of the gravel by spraying the washing water to the gravel washed the surface through the injection of compressed air, the water washing unit is A water pipe to which a constant water pressure is applied; Construction gravel cleaning device, characterized in that consisting of a water spray nozzle which is installed at one end of the water pipe and spraying the washing water to the gravel supplied by the transfer unit to wash the water. The method of claim 12, wherein the drying unit further comprises a drying unit for evaporating the moisture in accordance with the humidity containing state of the water washed through the washing unit, the drying unit evaporates the moisture in the gravel by hot air supply by the fan drive Hot air dryer and letting; Construction gravel cleaning device, characterized in that consisting of a heater heater for evaporating the moisture in the gravel by the heating action by the heating wire. 10. The abrasive according to any one of claims 1 to 3 and 6 to 9, wherein the abrasive is formed of any one of sand, plastic, silica, iron balls, dry ice, ice, and grains. Gravel cleaning device for construction.

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