CN112024357B - Polluted recycled aggregate treatment system and method - Google Patents

Abstract

The invention relates to a system and a method for treating polluted recycled aggregate, which comprises a crawler-type collecting vehicle and a sand and stone rubbing machine, and also comprises a primary vibration separating screen and a secondary vibration separating screen which are used for screening sand and stones, wherein the discharge port of the crawler-type collecting vehicle is connected with the feed port of the primary vibration separating screen, and the discharge port of the primary vibration separating screen is connected with the feed port of the sand and stone rubbing machine; the feed inlet of the secondary vibration separating screen is connected with the discharge outlet of the sand and stone scrubbing machine; the sand and stone rubbing and washing machine is provided with two sand and stone rubbing and washing machines, one sand and stone rubbing and washing machine is used for receiving sand led out from the discharge port of the first-stage vibration separating screen, and the other sand and stone rubbing and washing machine is used for receiving stones led out from the discharge port of the first-stage vibration separating screen. The sand and stone separation device has the effects of separating sand and stones fished in a river channel and conveniently and respectively treating the sand and the stones in the follow-up process.

Description

Polluted recycled aggregate treatment system and method

Technical Field

The invention relates to the technical field of polluted sandstone treatment, in particular to a system and a method for treating polluted recycled aggregate.

Background

With the development of our society, the importance of environmental protection has been gradually recognized by governments and people, some mountain villages have been established as tourist vacation areas after years of treatment, the sewage flowing into the river channel is also cut off, but the water body in the river bed is still not clear, one of the important reasons is that pebbles and sands in the river channel are polluted (pebbles and sands are aggregates), the pollutants cover the pebbles and the sands, some polluted and even discolored, and to recover the ecological environment as soon as possible, the pebbles and the sands in the brook are necessary to be cleaned to recover the original appearance.

A Chinese patent with an authorization publication number of CN105798053 in the prior art discloses a polluted sand treatment device, which comprises a crawler-type sand collecting vehicle, wherein a sand collecting head and a chain plate conveyor are installed on the crawler-type sand collecting vehicle, an outlet of the sand collecting head is connected with an inlet of the chain plate conveyor, an outlet of the chain plate conveyor is connected with an inlet of a sand stirring machine, an outlet of the sand stirring machine is communicated with an inlet of a first-stage gravity pollutant separator, an outlet of the first-stage gravity pollutant separator is connected with an inlet of a sand cleaning machine, an outlet of the sand cleaning machine is connected with an inlet of a second-stage gravity pollutant separator, an outlet of the second-stage gravity pollutant separator is connected with an inlet of a sand rinsing machine, and an outlet of the sand rinsing machine is connected with an inlet of a sand bin.

When the device works, sand and stones are firstly fished up by the crawler-type gravel collecting vehicle from the river channel, then enter the gravel stirring machine in a sand-stone mixed state to be stirred by stirring, and then sequentially pass through the first-stage gravity pollutant separator, the gravel cleaning machine, the second-stage gravity pollutant separator, the gravel rinsing machine and the gravel bin to be cleaned, and finally are discharged into the river channel again.

The above prior art solutions have the following drawbacks: after sand and stone enter the sand and stone stirring machine in a mixed state, the sand and stone are rubbed to rub down pollutants on the surface, because the sand and stone fished up from the river channel are all in a polluted state, a large amount of pollutants are attached to the surface of the sand and stone, the pollutants are transferred to another polluted object from one polluted object only by rubbing each other, the amount of the pollutants on the unit area of the surfaces of the sand and the stone is not easy to reduce, the effect of removing the pollutants in the process is poor, so that the follow-up process needs to bear the heavier task of removing the pollutants, the whole pollutant removal work is not facilitated, and the improvement is achieved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a pollution regeneration aggregate treatment system which has the effects of separating sand and stones fished in a river channel and conveniently and respectively treating the sand and the stones subsequently.

The above object of the present invention is achieved by the following technical solutions:

a pollution regeneration aggregate treatment system comprises a crawler-type collecting vehicle and a sand and stone scrubbing machine, and further comprises a primary vibration separating screen and a secondary vibration separating screen which are used for screening sand and stones, wherein a discharge port of the crawler-type collecting vehicle is connected with a feeding port of the primary vibration separating screen, and a discharge port of the primary vibration separating screen is connected with a feeding port of the sand and stone scrubbing machine; the feed inlet of the secondary vibration separating screen is connected with the discharge outlet of the sand and stone scrubbing machine; the sand rubbing machine is provided with two sand rubbing machines, one sand rubbing machine is used for receiving sand led out from the discharge port of the primary vibrating separating screen, and the other sand rubbing machine is used for receiving stones led out from the discharge port of the primary vibrating separating screen.

Through adopting above-mentioned technical scheme, the setting of one-level vibration separating screen and second grade vibration separating screen conveniently separates the grit mixture to make things convenient for sand and stone separately to handle, help promoting the treatment effect to sand and stone.

The invention may further be configured in a preferred example, further comprising a dirt separation device, wherein a feed inlet of the dirt separation device is connected with a discharge outlet of the secondary vibrating screen, and the dirt separation device is used for receiving sand or stones separated from the secondary vibrating screen and separating dirt on the surface of the sand or stones.

Through adopting above-mentioned technical scheme, filth separator's setting for the filth on sand and stone surface can be by the sanitization, reaches the purpose of grit in the clean river course.

The invention may in a preferred example be further configured such that the dirt separation means comprises: the sand or stone cleaning device comprises a cleaning pool, a support, a reticular roller, a first driving piece and a lifting assembly, wherein the cleaning pool is used for containing cleaning liquid for cleaning sand or stones; the bracket is arranged right above the cleaning pool; the mesh-shaped roller is movably arranged on the bracket and is used for containing the washed stones or sand; the first driving piece is vertically arranged on the bracket in a sliding manner and is used for driving the mesh-shaped roller to rotate around the axis of the mesh-shaped roller; the lifting assembly is arranged on the support and is used for driving the reticular roller and the first driving piece to move up and down so as to enable the reticular roller to contact the cleaning liquid in the cleaning pool.

By adopting the technical scheme, the cleaning pool is convenient for placing cleaning liquid required during cleaning; the support is arranged to provide mounting positions for the mesh roller, the first driving piece and the lifting assembly, so that the mesh roller, the first driving piece and the lifting assembly can play a role conveniently; the mesh-shaped roller can be used for intensively containing sand or stones for cleaning, the sand or stones can be conveniently fished out of the cleaning liquid after cleaning, and the sand or stones can be turned over when being cleaned by combining the first driving part, so that the cleaning effect is improved; the setting of lifting unit for sand or stone can break away from the contact with the washing liquid after wasing, just also difficult appearance appears because liquid flows through sand or stone and the condition of remaining filth on sand or stone surface appears when discharging the washing liquid this moment, helps reducing the filth on sand or stone surface, promotes the cleaning performance to sand and stone.

The invention can be further configured in a preferred example that the lifting assembly comprises a second driving member and a connecting block, the second driving member is fixedly arranged on the bracket and is used for driving the connecting block to move up and down; the connecting block is arranged on the second driving piece and is used for connecting the second driving piece and the mesh roller.

By adopting the technical scheme, the second driving part provides power for the ascending and descending of the reticular roller, and facilitates the contact and separation of the reticular roller with and from the cleaning liquid; the setting of connecting block conveniently couples together second driving piece and netted cylinder, makes things convenient for the power of second driving piece to use on netted cylinder.

The invention may further be configured in a preferred example such that the frame is further provided with a plurality of water spraying members for washing sand or stones in the net drum.

Through adopting above-mentioned technical scheme, the setting of water spray spare for sand or stone in the netted cylinder can wash at once after finishing washing, reach the purpose that further clearance sand or stone brought the filth from the washing liquid on the one hand, on the other hand sets up the water spray spare in the top of washing the pond, still does not need the staff to carry sand or stone to other places and go the rinsing, has also reduced the occupation in place and the preparation of instrument when rinsing when having saved the operation action.

The invention can be further configured in a preferred example that the inside of the reticular roller is provided with a stirring piece for stirring the sand or the stones, and the stirring piece is provided with a third driving piece for driving the stirring piece to rotate.

Through adopting above-mentioned technical scheme, the setting of stirring piece and third driving piece has played further purpose to sand or stone stirring in the netted cylinder for sand or stone in the netted cylinder can be fast abundant contact cleaning liquid more, promote abluent efficiency and effect.

The invention may further be configured in a preferred example that the stirring member includes a stirring shaft and a stirring rod, and both ends of the stirring shaft are rotatably connected with both ends of the mesh drum, respectively; the puddler is provided with many, and many puddlers evenly set up on the axle side surface of (mixing) shaft to the length direction of puddler is perpendicular with the axis direction of (mixing) shaft.

By adopting the technical scheme, the arrangement of the stirring shaft provides an installation position for the stirring rod, and meanwhile, the third driving piece is convenient to drive the stirring rod to rotate; due to the arrangement of the stirring rod, the stirring area is increased, and the effect of stirring sand or stones is improved.

The invention also aims to provide a method for treating the polluted recycled aggregate, which can disperse the dirt on the sand and the stone, reduce the amount of the dirt on the unit area of the sand and the stone and help to reduce the cleaning pressure of the subsequent process.

The second purpose of the invention is realized by the following technical scheme:

a method for treating contaminated recycled aggregate, comprising:

s1, scooping up the sand and stone mixture in the river channel through a crawler-type collecting vehicle, and conveying the sand and stone mixture to a primary vibration separation sieve;

s2, screening the sand-stone mixture into sand and stones by the primary vibration separation screen, and respectively conveying the screened sand and stones into two sand-stone rubbing machines;

s3, adding clean stones into the sand rubbing machine containing the sand fished out of the river channel, and adding clean sand into the sand rubbing machine containing the sand fished out of the river channel;

s4, conveying the rubbed gravel mixture in the two gravel rubbing machines into the two secondary vibrating separation sieves respectively;

s5, screening sand and stones fished out of the river channel by the two secondary vibration screening sieves respectively, and conveying the sand and stones into the two dirt separating devices respectively;

s6, removing the dirt on the surfaces of sand and stones respectively by using the two dirt separating devices;

and S7, taking out the sand and the stones cleaned in the dirt separation device, and throwing the sand and the stones back to the river channel again. Through adopting above-mentioned technical scheme, add clean stone in rubbing the washing machine with the grit to the sand stone that has placed the sand of dragging for from the river course, rub the washing machine with the grit to the sand stone that has placed the stone of dragging for from the river course in and add clean sand, make sand or the filth on the stone surface of fishing for in the river course can be dispersed, thereby reach the purpose of the volume of filth on the sand or the stone surface unit area of dragging for in the reduction follow river course, just also can be easier some when handling sand or the stone of dragging for in the river course afterwards, help promoting the effect and the efficiency that the filth was handled.

The invention may in a preferred example be further configured such that a portion of the sand and stones should be retained in step S7 for addition to the sand washer as clean sand and stones for the next cleaning.

Through adopting above-mentioned technical scheme, hold back partly sand or stone and can realize having reduced the waste of resource to the reuse of sand or stone, need not go in addition again and prepare sand and stone.

The invention may further be configured in a preferred example that the sand screened in step S5 and added later is mixed with the sand fished out of the river channel and added into the dirt separator together; and (5) mixing the stones screened out in the step (S5) and added later with the stones fished out from the river channel, and adding the stones and the stones into the dirt separation device together.

Through adopting above-mentioned technical scheme for sand and stone that the back added into also can be handled totally, the waste of difficult production grit.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the primary vibrating separating screen and the secondary vibrating separating screen can separate sand and stones, so that the sand and stones can be conveniently and respectively treated in the follow-up process; the operation of adding clean sand and stones disperses the dirt on the surfaces of the sand and the stones fished out of the river channel, so that the amount of the dirt on the surface unit area of the sand and the stones is reduced, and the subsequent dirt cleaning is easier and more efficient;

2. the setting of lifting unit for sand or stone can break away from the contact with the washing liquid after wasing, just also difficult appearance appears because liquid flows through sand or stone and the condition of remaining filth on sand or stone surface appears when discharging the washing liquid this moment, helps reducing the filth on sand or stone surface, promotes the cleaning performance to sand and stone.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view showing the construction of the dirt separator of the present invention.

FIG. 3 is a schematic view of the structure of the stirring member of the present invention.

In the figure, 1, a crawler-type collecting vehicle; 2. a sand scrubbing machine; 3. a first-stage vibration separating screen; 4. secondary vibration separating screen; 5. a dirt separation device; 51. a cleaning tank; 52. a support; 53. a mesh drum; 54. a first driving member; 55. a lifting assembly; 551. a second driving member; 552. connecting blocks; 6. a stirring member; 61. a stirring shaft; 62. a stirring rod; 7. a third driving member; 8. a water spraying member; 81. a sprinkler head; 82. a water conduit; 83. and (4) a water pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the present invention discloses a system for treating contaminated recycled aggregate, comprising: the device comprises a crawler-type collecting vehicle 1, a sand and stone scrubbing machine 2, a dirt separating device 5, a primary vibrating separating screen 3 and a secondary vibrating separating screen 4, wherein the primary vibrating separating screen 3 and the secondary vibrating separating screen 3 are used for screening sand and stones, the crawler-type collecting vehicle 1 and the primary vibrating separating screen 3 are respectively provided with one machine, a discharge port of the crawler-type collecting vehicle 1 is connected with a feeding port of the primary vibrating separating screen 3, and a discharge port of the primary vibrating separating screen 3 is connected with a feeding port of the sand and stone scrubbing machine 2; the sand and stone scrubbing machine 2 is provided with two sand and stone scrubbing machines, one sand and stone scrubbing machine 2 is used for receiving sand led out from the discharge port of the first-stage vibration separating screen 3, and the other sand and stone scrubbing machine 2 is used for receiving stones led out from the discharge port of the first-stage vibration separating screen 3; the two secondary vibrating separating sieves 4 are also provided, the feeding port of one secondary vibrating separating sieve 4 is connected with the discharging port of one sand rubbing and washing machine 2, and the feeding port of the other secondary vibrating separating sieve 4 is connected with the discharging port of the other sand rubbing and washing machine 2; the pan feeding mouth and the discharge gate of second grade vibration separation sieve 4 of filth separator 5 are connected, and filth separator 5 is arranged in receiving the sand or the stone that separate out and for fishing out from the river course in the second grade vibration separation sieve 4 to isolate the filth on sand or stone surface, and filth separator 5 is provided with two, and one is used for receiving the sand that the 4 discharge gates departments of second grade vibration separation sieve derived, and another is used for receiving the stone that the 4 discharge gates departments of second grade vibration separation sieve derived.

The crawler-type collecting vehicle 1 and the sand and stone rubbing and washing machine 2 are described in detail in a chinese patent with an authorization publication number of CN105798053, and the crawler-type collecting vehicle 1 and the sand and stone rubbing and washing machine 2 in this embodiment are not different from the crawler-type collecting vehicle 1 and the sand and stone rubbing and washing machine 2 mentioned in this patent, and thus are not described in detail in this embodiment.

Referring to fig. 2, the dirt separation apparatus 5 includes: the sand cleaning device comprises a cleaning pool 51, a support 52, a net-shaped roller 53, a first driving piece 54 and a lifting assembly 55, wherein the cleaning pool 51 is in a cuboid shape and is made of concrete, and the cleaning pool 51 is used for containing cleaning liquid for cleaning sand or stones; the support 52 is arranged right above the cleaning pool 51, the support 52 comprises two vertical parallel support plates, the lower ends of the support plates are pre-embedded at the pool opening of the cleaning pool 51, and the two support plates are symmetrical relative to the cleaning pool 51; two opposite side surfaces of the two supporting plates are respectively provided with a vertical long hole with a waist-round cross section.

Referring to fig. 2 and 3, the mesh-shaped roller 53 is made of corrosion-resistant stainless steel, the diameter of meshes on the mesh-shaped roller 53 is smaller than that of sand or stones, the mesh-shaped roller 53 is movably arranged on the bracket 52 and used for containing washed stones or sands, an opening for feeding and discharging is arranged on the shaft side surface of the mesh-shaped roller 53, a cover plate is hinged to the opening, and one end, far away from the hinged part, of the cover plate is bound and fixed through an iron wire; the reticular cylinder 53 is welded with a connecting pipe at the end parts of the two ends perpendicular to the axis of the reticular cylinder 53, the connecting pipe is in a circular tube shape and is made of corrosion-resistant stainless steel, the two ends of the two connecting rods penetrate through the two vertical long holes respectively, and the axes of the two connecting pipes coincide with the axis of the reticular cylinder 53.

Referring to fig. 2 and 3, the first driving member 54 is a motor, the first driving member 54 is vertically slidably disposed on the bracket 52 and is used for driving the mesh roller 53 to rotate around its axis, the axis of the output shaft of the first driving member 54 coincides with the axis of the connecting pipe, and the output shaft of the first driving member 54 is connected with the connecting pipe through a stainless steel coupling.

Referring to fig. 2 and 3, a stirring member 6 for stirring sand or stones is further disposed inside the mesh drum 53, a third driving member 7 for driving the stirring member 6 to rotate is disposed on the stirring member 6, and the third driving member 7 is a motor; the arrangement of the stirring piece 6 and the third driving piece 7 enables the sand and stone inside the mesh-shaped roller 53 to be further stirred, so that the sand and stone can be sufficiently contacted with the cleaning liquid in the cleaning pool 51, and the cleaning effect of the cleaning liquid is further improved.

Referring to fig. 3, the stirring member 6 includes a stirring shaft 61 and a stirring rod 62, the stirring shaft 61 is made of corrosion-resistant stainless steel, two ends of the stirring shaft 61 respectively penetrate through the mesh-shaped drum 53 and are rotatably connected with the mesh-shaped drum 53, two ends of the stirring shaft 61 respectively penetrate through two connecting pipes after penetrating through the mesh-shaped drum 53, the stirring shaft 61 is rotatably connected with the connecting pipes through bearings, and the stirring shaft 61, the mesh-shaped drum 53 and the connecting pipes are coaxially arranged; the stirring rods 62 are cylindrical and made of corrosion-resistant stainless steel, the stirring rods 62 are provided with a plurality of stirring rods 62, the stirring rods 62 are uniformly welded on the shaft side surface of the stirring shaft 61, and the length direction of the stirring rods 62 is perpendicular to the axial direction of the stirring shaft 61.

Referring to fig. 3, the output shaft of the third driving member 7 is fixedly connected to one end of the stirring shaft 61 far from the first driving member 54 through a stainless steel coupler, so that the third driving member 7 can drive the stirring shaft 61 to rotate around its own axis.

Referring to fig. 2 and 3, the lifting assembly 55 is disposed on the bracket 52 and is used for driving the mesh-shaped roller 53 and the first driving member 54 to move up and down to make the mesh-shaped roller 53 contact the cleaning liquid in the cleaning pool 51, so as to clean the sand in the mesh-shaped roller 53 and simultaneously pull up the mesh-shaped roller 53 from the cleaning pool 51 after cleaning is completed, so that the sand in the mesh-shaped roller 53 can be separated from the cleaning liquid, and in this design, when the cleaning liquid is discharged from the cleaning pool 51, the dirt cleaned in the cleaning liquid is not easy to remain on the surface of the sand due to the liquid flowing through the sand during liquid discharge, thereby effectively reducing the amount of dirt remaining on the surface of the sand, reducing the burden of cleaning the dirt in the subsequent process, and being beneficial to improving the effect and efficiency of cleaning the dirt.

Referring to fig. 2 and 3, two sets of lifting assemblies 55 are provided, one set of lifting assemblies 55 is located above the second driving member 551, and the other set of lifting assemblies 55 is located above the third driving member 7; the lifting assembly 55 comprises a second driving part 551 and a connecting block 552, the second driving part 551 is an air cylinder, the second driving part 551 is fixed on the bracket 52 through a bolt and is used for driving the connecting block 552 to move up and down, the bracket 52 further comprises a transverse plate, the transverse plate is horizontally arranged above the cleaning pool 51, two ends of the transverse plate are respectively fixedly connected with the upper ends of the two supporting plates through screws, two ends of the transverse plate respectively exceed one section of the corresponding supporting plate, the second driving part 551 is fixed at the position where the transverse plate exceeds the supporting plates through a bolt, and a piston rod of the second driving part 551 vertically extends or retracts downwards; connecting block 552 is the cuboid shape and is stainless steel material, the piston rod is kept away from cylinder body one end weld on connecting block 552 one end that is in first driving piece 54 top and the second driving piece 551 that corresponds, this connecting block 552 other end passes through screw fixed connection with first driving piece 54 upside surface, the piston rod is kept away from cylinder body one end weld on connecting block 552 one end that is in third driving piece 7 top and the second driving piece 551 that corresponds, this connecting block 552 other end passes through screw fixed connection with third driving piece 7 upside surface.

Referring to fig. 2, when the piston rod of the second driving member 551 extends and retracts up and down, the mesh roller 53 may be pulled up and down by the connecting block 552, so that the lower surface of the mesh roller 53 may contact or be separated from the cleaning solution.

Referring to fig. 2, in order to wash the washed sand and stone in time, a plurality of water spraying members 8 for washing the sand or stone in the mesh drum 53 are further provided on the horizontal plate of the bracket 52, and the water spraying members 8 include: the water sprayer comprises a water spraying head 81, a water guide pipe 82 and a water pump 83, wherein one end of the water spraying head 81 is aligned with the axial side surface of the reticular roller 53, the other end of the water spraying head 81 is communicated with one end of the water guide pipe 82, the other end of the water guide pipe 82 is communicated with the water pump 83, the water pump 83 is connected with a water tank, water in the water tank is pressurized by the water pump 83 and then is sprayed out from the water spraying head 81 along the water guide pipe 82 to be sprayed onto the reticular roller 53, and sand in the reticular roller 53 is cleaned.

Compared with a mode of taking the gravels out of the meshed drum 53 and then rinsing, the mode omits a step of taking the gravels out of the meshed drum 53, saves operation actions, does not need to specially set a rinsing pool, and reduces resource use and space occupation.

Referring to fig. 1 and 2, the following is a method for treating contaminated recycled aggregate, comprising:

s1, scooping up the sand-stone mixture in the river channel through a crawler-type collecting vehicle 1, and conveying the sand-stone mixture into a primary vibration separating screen 3;

s2, screening the sand-stone mixture into sand and stones by the primary vibration separation screen 3, and respectively conveying the screened sand and stones into the two sand-stone rubbing and washing machines 2;

s3, adding clean stones into the sand rubbing and washing machine 2 containing the sand fished out from the river channel, and adding clean sand into the sand rubbing and washing machine 2 containing the sand fished out from the river channel;

s4, conveying the sand-stone mixture scrubbed in the two sand-stone scrubbing machines 2 into the two secondary vibrating separating sieves 4 respectively;

s5, screening sand and stones fished out of the river channel by the two secondary vibration separation sieves 4 respectively, and conveying the sand and stones into the two dirt separation devices 5 respectively;

s51, mixing the sand separated from the secondary vibration separation screen 4 and added later with the sand separated from the secondary vibration separation screen 4 and fished out of the river channel, adding the sand and the sand into one dirt separation device 5, and simultaneously mixing the stones separated from the secondary vibration separation screen 4 and added later with the stones separated from the secondary vibration separation screen 4 and fished out of the river channel, and adding the stones and the stones into the other dirt separation device 5;

s6, removing the dirt on the surfaces of the sand and the stone by the two dirt separating devices 5 respectively;

s61, after the sand or the stones in the mesh-shaped roller 53 are filled, firstly, starting a second driving part 551 to enable the lower surface of the side of the mesh-shaped roller shaft 53 to be downwards immersed into the cleaning liquid in the cleaning pool 51, meanwhile, driving the mesh-shaped roller 53 to rotate around the axis of the mesh-shaped roller 53 by a first driving part 54, and driving a stirring part 6 to rotate by a third driving part 7 to enable the sand or the stones in the mesh-shaped roller 53 to be more comprehensively cleaned, after the cleaning is finished, pulling up the mesh-shaped roller 53 to enable the lower surface of the side of the lower shaft of the mesh-shaped roller 53 to be separated from the cleaning liquid, and then, washing the sand or the stones in the mesh-shaped roller 53 by a water spraying part 8;

s7, taking out the sand and the stones cleaned in the dirt separation device 5, and throwing the sand and the stones back to the river channel again;

s71, a part of the cleaned sand and stones should be retained to be added into the sand rubbing machine 2 as clean sand and stones next time.

Add clean stone in the sand of 3 sieves of one-level vibration separating screen, add clean sand in the stone of 3 sieves of one-level vibration separating screen to one-level vibration separating screen, this kind of design, make the clean stone and the clean sand that add can not only rub the sand and the filth on stone surface of dragging for in the river course, make things convenient for follow-up clearance to the filth, and can glue away partly, make the sand and the filth on stone surface of dragging for in the river course disperse to the surface of the sand and the stone of new interpolation, just also can reach the reduction and come from sand and stone surface department in the river course this moment, the purpose of the volume of filth on the unit area, thereby make follow-up just also can handle totally more easily when handling sand and the filth on stone surface, and because handle easier, the efficiency of handling the filth also can be higher naturally.

The cleaned sand and stones are partially retained, so that the sand and stones can be recycled, the workers do not need to prepare clean sand and stones in subsequent work, and the resources are recycled.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (3)

1. A method for treating polluted recycled aggregate is based on a polluted recycled aggregate treatment system, and the polluted recycled aggregate treatment system comprises the following steps: the sand and stone scrubbing machine comprises a crawler-type collecting vehicle (1), a sand and stone scrubbing machine (2), a primary vibration separating screen (3) and a secondary vibration separating screen (4) which are used for screening sand and stones, and a dirt separating device (5), wherein a discharge port of the crawler-type collecting vehicle (1) is connected with a feeding port of the primary vibration separating screen (3), and a discharge port of the primary vibration separating screen (3) is connected with a feeding port of the sand and stone scrubbing machine (2); a feeding port of the secondary vibration separating screen (4) is connected with a discharging port of the sand rubbing machine (2); the sand and stone scrubbing machine (2) is provided with two sand and stone scrubbing machines, one sand and stone scrubbing machine (2) is used for receiving sand led out from the discharge port of the first-stage vibration separating screen (3), and the other sand and stone scrubbing machine (2) is used for receiving stones led out from the discharge port of the first-stage vibration separating screen (3);

the pan feeding mouth of filth separator (5) with the discharge gate of second grade vibration classifying screen (4) is connected, and filth separator (5) are used for receiving the sand or the stone that separate out in second grade vibration classifying screen (4) and separate out the filth on sand or stone surface, filth separator (5) include: the sand or stone cleaning device comprises a cleaning pool (51), a support (52), a mesh-shaped roller (53), a first driving piece (54) and a lifting assembly (55), wherein the cleaning pool (51) is used for containing cleaning liquid for cleaning sand or stones; the bracket (52) is arranged right above the cleaning pool (51); the reticular roller (53) is movably arranged on the bracket (52) and is used for containing the washed stones or sand; the first driving piece (54) is vertically arranged on the bracket (52) in a sliding manner and is used for driving the mesh roller (53) to rotate around the axis of the mesh roller; the lifting assembly (55) is arranged on the bracket (52) and is used for driving the reticular roller (53) and the first driving piece (54) to move up and down so as to enable the reticular roller (53) to contact the cleaning liquid in the cleaning pool (51); a stirring piece (6) for stirring sand or stones is arranged in the reticular roller (53), and a third driving piece (7) for driving the stirring piece (6) to rotate is arranged on the stirring piece (6);

the method for treating the polluted recycled aggregate is characterized by comprising the following steps:

s1, scooping up the sand-stone mixture in the river channel through a crawler-type collecting vehicle (1), and conveying the sand-stone mixture into a primary vibration separating screen (3);

s2, screening the sand-stone mixture into sand and stones by the primary vibration separation screen (3), and respectively conveying the screened sand and stones into the two sand-stone rubbing and washing machines (2);

s3, adding clean stones into the sand rubbing and washing machine (2) containing the sand fished out from the river channel, and adding clean sand into the sand rubbing and washing machine (2) containing the sand fished out from the river channel;

s4, conveying the sand-stone mixture scrubbed in the two sand-stone scrubbing machines (2) into the two secondary vibration separating sieves (4) respectively;

s5, screening sand and stones fished out of the river channel by two secondary vibration separation sieves (4) respectively, and conveying the sand and stones into two dirt separation devices (5) respectively;

s6, removing the dirt on the surfaces of the sand and the stone by the two dirt separating devices (5) respectively;

s7, taking out the sand and the stones cleaned in the dirt separation device (5), and throwing the sand and the stones back to the river channel again.

2. The method for treating contaminated recycled aggregate according to claim 1, wherein a portion of sand and stones should be retained in step S7 to be added to the sand washer (2) as clean sand and stones for the next cleaning.

3. The method for treating contaminated recycled aggregate according to claim 1, wherein the sand screened in step S5 and added later is mixed with sand fished out in the river and added together into the dirt separation device (5); the stones screened out in the step S5 and added later are mixed with stones fished out of the river channel and are added into the dirt separation device (5) together.

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