CN111266384A - Building muck on-site recycling system - Google Patents

Abstract

A building muck on-site recycling system comprises: the sand-stone separation production line is used for primarily screening building residue soil, sand-stone materials are screened to the sand-stone screening production line for further screening, and screened mud and the like are conveyed to the mud treatment production line for recycling bricks, so that the recycling of the building residue soil is realized, and the recycling problem of the building residue soil is effectively solved.

Description

Building muck on-site recycling system

Technical Field

The invention relates to a building muck on-site recycling system, in particular to a system for separating and recycling building muck with high sand-stone content, which is excavated in urban building construction such as high-rise foundation pit excavation, subway tunnel excavation and the like.

Background

At present, sand used in constructional engineering is basically collected from rivers, but excessive river (river) sand digging can lead the river (river) bed to integrally descend, so that bank slope collapse of a large bank can be easily caused in a flood season; during the dry period, the water level is easy to drop, which causes difficulty in irrigation along the line and water taking of domestic water. Therefore, the current situation that disordered river (river) sand excavation is forbidden gradually in China is great, so that the sand supply is short, the price is high, and the building cost is increased. On the other hand, clay brick firing is forbidden in China for protecting cultivated land, and the baking-free bricks currently used in the market are poorer in strength and durability than clay bricks, so that the construction quality needs to be ensured by improving the structural strength of a high-rise frame, and the construction cost is increased.

Meanwhile, in urban construction, the building muck excavated out of the foundation pit is abandoned in the field in the wasteland and is accumulated in the field, the mode occupies an area even to invade the farmland or forest land, is not beneficial to the growth of vegetation and even causes environmental damage, and further, the dust is increased after being sun for a long time, and the life and property safety is influenced if the building muck is rained for a long time.

Disclosure of Invention

The invention aims to provide a building muck on-site recycling system, which can effectively solve the problem of urban muck treatment and solve the problems of short supply of gravels and the like in the building construction process.

In order to solve the above problems, the present invention provides a construction waste soil on-site recycling system, comprising: grit separation production line: the construction residue soil with high sand and stone content is conveyed to the coarse steel bar net separating device by using a loading device of a dumper or a loader, and simultaneously, the effect of impacting the separating device by high-pressure water is assisted, so that sand and stone are primarily separated, and mud is dissolved in water. The coarse reinforcing mesh separating device is obliquely arranged at an angle of 45-50 degrees, the transverse reinforcing steel bar is arranged above the coarse reinforcing mesh separating device, and the longitudinal reinforcing steel bar is arranged below the transverse reinforcing steel bar and is used for increasing the falling resistance of stones, prolonging the high-pressure water impact time, increasing the stone-hitting effect and improving the sand-stone separation rate. The medium-fine silt and gravel slurry separated by the coarse steel bar mesh separating device flows into the double-helix sand washing device under the action of self weight. The double-helix sand washing device comprises a feeding chute, a double-helix sand washing machine, a driving system and a discharging chute. The medium and fine silt and gravel slurry flow sequentially enters a feed chute, a double-helix sand washer and a discharge chute, the double-helix sand washer is driven by a driving system to fully abrade and separate medium and fine silt and gravel, and then the medium and fine silt and gravel are conveyed to a medium and fine gravel screening roller device through the discharge chute. The medium-fine sand screening roller device comprises a second feeding spiral blade segment, a second sand stir-frying and washing segment, a second round-hole sieve plate segment and a second discharging spiral blade segment, wherein the second feeding spiral blade segment, the second sand stir-frying and washing segment, the second round-hole sieve plate segment and the second discharging spiral blade segment are arranged in an inclined mode at an angle of 5-8 degrees, the inlet is high, the outlet is low, the diameter is 2.2-2.5m, and the length is 16-18. Well fine silt gravel is advanced into the pan feeding spiral leaf segment in proper order, the grit is fried and is washed the section, circular hole sieve plate section and ejection of compact spiral leaf segment, the grit is fried and is washed the section and further broken and wash formation sand, the stone mixture with high pressure water repeatedly, mud is dissolved in water, the sand that circular hole sieve plate section will accord with size specification, stone, mud water mixture screening gets into the mud stone chute, a small amount of sand of super size specification, the stone mixture is carried to stone breaker through ejection of compact spiral leaf segment and is broken, stone breaker passes through high-pressure gas earlier with the humification organic matter, debris such as plastics clean up, to the sand of super size specification, the stone mixture is smashed and is carried to coarse gravel screening drum device and screens the separation once more. And the coarse mud sand stone mixture separated by the coarse steel bar net separating device rolls to the coarse sand stone screening roller device under the action of self weight. The coarse gravel screening roller device also comprises a first feeding spiral blade section, a first gravel frying and washing section, a first round hole sieve plate section and a first discharging spiral blade section, the first feeding spiral blade section, the first gravel frying and washing section, the first round hole sieve plate section and the first discharging spiral blade section are arranged in an inclined mode at 4-6 degrees, the inlet is high, the outlet is low, the diameter is 3.0-3.2m, the length is 12-15m, and compared with the medium-fine gravel screening roller device, the requirements on rigidity, strength and wear resistance of blade materials of each section in the coarse gravel screening roller device are higher. Coarse mud grit mixture advances into the pan feeding spiral leaf segment in proper order, the grit is fried and is washed the section, circular hole sieve plate section and ejection of compact spiral leaf segment, the grit is fried and is washed the section and further broken and wash formation sand, the stone mixture with high pressure water repeatedly, mud is dissolved in water, the sand that circular hole sieve plate section will accord with size specification, stone, the screening of mud water mixture gets into the mud stone chute, the sand of super size specification, the stone mixture is carried to the stone breaker through ejection of compact spiral leaf segment and is sent to coarse gravel screening drum device after likewise carrying out the breakage and carry out screening separation once more.

Grit screening production line: the sand, stone and muddy water mixture flowing from the mud-rock flow groove firstly reaches the position of the stone material lifting and washing device, the sand and stone mixture is washed by the stone material lifting and washing device and drained and then is conveyed to the stone material vibration screening device, and the sand and stone mixture which meets the size specification is screened according to different particle sizes and is respectively stacked to different sand-stone material piles. And then washing and draining the rest sand materials through a sand material washing device, conveying the sand materials to a sand material vibration screening device, screening the sand materials according to different particle sizes by the sand material vibration screening device, respectively stacking the sand materials to different sand material piles, and enabling the rest muddy water to be completely converged into a muddy stone water pool and then enter a mud treatment system.

Slurry treatment production line: mud in a mud pool is conveyed to a mud sedimentation tank through a mud pump, soil and silt in the mud are sunk, clean water is gradually formed on the surface layer, the mud and the silt are filtered, collected and reused, the soil and the silt on the bottom layer of the mud sedimentation tank are conveyed to a mud dewatering device, the water content is reduced to be below 35%, the desliming water is collected and reused, the dewatered soil and the silt enter a mixing device, 13% -16% of shale material by mass is added, high-performance mud is formed after mixing, the high-performance mud is conveyed to an extruding device, brick making is completed, the mud and the silt are stacked to a stacking and airing storage yard, natural airing or air drying is performed, the bricks after being dried are placed into a firing device, and sintering is completed to form the building bricks.

Furthermore, the coarse steel bar mesh separating device in the building residue soil on-site recycling system is obliquely arranged at an angle of 45-50 degrees, the length is 7-8m, the width is 3.5-4m, the side length of gaps of steel bar mesh grids is 60mm, the diameter of transverse steel bars is 50mm, and the diameter of longitudinal steel bars is 40 mm.

Furthermore, in the construction residue soil on-site recycling system, the transverse steel bars of the coarse steel bar net are arranged above the transverse steel bars, and the longitudinal steel bars are arranged below the transverse steel bars and are used for increasing the falling resistance of stones, increasing the high-pressure water impact time, increasing the stone-hitting effect and improving the sand-stone separation rate.

Furthermore, the double spirals of the double-spiral sand washing device in the building residue soil on-site recycling system are arranged in parallel, and the direction of the double-spiral sand washing device rotates towards the middle.

Further, the bottom of the slurry pool in the building residue soil on-site recycling system is made of a reinforced concrete structure, and the bottom is obliquely arranged towards one end.

Further, the mud sedimentation tank in the building residue soil on-site recycling system comprises a plurality of small sedimentation tanks, and each small sedimentation tank comprises a mud injection port and a dewatering pump.

Further, the slurry dehydration device in the building residue soil on-site recycling system is a screw extrusion device.

The construction slag soil excavated in the construction site is treated on site, the sand, the stone and the soil are separated, the soil is respectively fired, and the sand and the stone are used as concrete raw materials for production.

Drawings

FIG. 1 is a layout diagram of the illustrated embodiment of the present invention.

Fig. 2 is a front view of the structure of the crude reinforcing bar net separating device.

Fig. 3 is a structural side view of the coarse steel bar net separating device.

FIG. 4a is a schematic structural diagram of a double-helix sand washing device according to the present invention.

Fig. 4b is a left side view of fig. 4 a.

FIG. 5 is a schematic structural view of a fine sand screening roller device or a coarse sand screening roller device according to an embodiment of the present invention.

FIG. 6 is a schematic view of the hook-shaped blade mounting structure of the water-soluble sand stir-frying section of the sand screening roller according to the present invention.

FIG. 7 is a schematic view showing the mixture of the present invention sprayed in a curtain shape along the circular cross section of the water-soluble washing section inside the sand screening drum device.

Reference numerals:

1: a sand-stone separation production line; 11: a loading device of a dumper or a loader; 12: a high-pressure water impact separation device; 13: a coarse steel bar net separating device; 14: a double-helix sand washing device; 1401: a feed chute; 1402: double helix sand washer; 1403: a drive system; 1404: a discharge chute; 15: a medium and fine sand screening roller device; 1501: a second feeding helical blade segment; 1502: a second sand stir-frying and washing section; 1503: a second round-hole screen section; 1504: a second discharge helical lobe segment; 16: a coarse gravel screening roller device; 1601: a first feeding helical blade segment; 1602: a first water-soluble stir-fried hooked leaf segment; 1603: a first round screen section; 1604: a first discharge spiral lobe segment; 17: a stone breaking device; 2: a sand and stone screening production line; 21: a mud stone launder; 22: a stone lifting and washing device; 23: a stone vibration screening device; 25: a sand material lifting and washing device; 26: a sand material vibrating screening device; 27: a slurry overflow device; 3: a slurry treatment production line; 31: a slurry pool; 32: a mud sedimentation tank; 33: a slurry dewatering device; 34: a mixing device; 35: an extrusion device; 36: stacking and airing a stock ground; 37: and (4) a firing device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 7, the construction waste soil site recycling system of the present embodiment includes the following devices:

grit separation production line 1: building residue soil is conveyed to a coarse steel bar net separating device 13 through a loading device 11 of a dumper or a loader, the coarse steel bar net separating device is obliquely arranged at an angle of 45-50 degrees, transverse steel bars of a steel bar net are placed above, longitudinal steel bars are arranged below the transverse steel bars, the transversely arranged steel bars are used for increasing the falling resistance of stones, prolonging the high-pressure water impact time and increasing the collision probability of stones and sands, the stones and the sand are preliminarily separated, the materials are preliminarily crushed under the impact of a high-pressure water impact separating device 12, mud, sand and stone mixtures with the size smaller than 60mm fall into a mud and stone chute 21 through grids of the coarse steel bar net separating device and flow into a double-helix sand washer 14, the double-helix sand washer 14 comprises a feeding chute 1401, a double-helix sand washer 1402, a driving system 1403 and a discharging chute 1404, the mixture flows into the double-helix sand washer 1402 through the feeding chute 1401, under the drive of the drive system 1403, a pair of double screws arranged in parallel rotate from two sides to the middle, fully abrade and separate the medium and fine sand slurry mixture, and then push the mixture discharge chute 1404 to convey the mixture to the medium and fine sand screening roller device 15. The medium and fine sand screening roller device 15 comprises a second feeding spiral blade segment 1501, a second sand stir-frying and washing segment 1502, a second round-hole sieve plate segment 1503 and a second discharging spiral blade segment 1504 which are arranged in an inclined way at an angle of 5-8 degrees, have a high inlet and a low outlet, the diameter of 2.2-2.5m and the length of 16-18m, the diameter of a round sieve hole is 50mm, the medium and fine sand slurry mixture sequentially enters the second feeding spiral blade segment 1501, the second sand stir-frying and washing segment 1502, the second round-hole sieve plate segment 1503 and the second discharging spiral blade segment 1504, the second sand stir-frying and washing segment 1502 further crushes sand and repeatedly washes high-pressure water to form a sand and stone mixture, the second round-hole sieve plate segment screens the sand and stone mixture with the size of less than 50mm, the sand and stone mixture enters a mud stone runner 21 and flows to a next production process system, the sand and stone mixture with the size of more than or equal to 50mm is conveyed to the stone crushing device 17 through the second discharging spiral blade segment to crush the sand and, the stone crushing device 17 cleans up sundries such as humus organic matters and plastics through high-pressure gas, and then crushes the mixture through the crusher and conveys the mixture to the coarse steel bar net separating device 13 for re-separation. The coarse stones or mud blocks with the size larger than or equal to 60mm separated by the coarse steel bar net separating device 13 are washed into the coarse sand screening roller device 16 for abrasive separation, the coarse sand screening roller device 16 comprises a first feeding spiral blade section 1601, a first sand stir-frying and washing section 1602, a first circular hole screen plate section 1603 and a first discharging spiral blade section 1604, the first feeding spiral blade section 1601, the first sand stir-frying and washing section, the first discharging spiral blade section 1604 are arranged in an inclined mode at 4-6 degrees, the inlet is high, the outlet is low, the diameter is 3.0-3.2m, the length is 12-15m, and the diameter of a circular screen hole is 50 mm. Coarse stone, the clod gets into first pan feeding spiral blade section 1601 in proper order, first grit is fried and is washed section 1602, first round hole sieve plate section 1603 and first ejection of compact spiral blade section 1604, first grit is fried and is washed section 1602 with coarse stone, the clod is further broken and is washed the cutting with high pressure water repeatedly and form sand, stone, mud mixture, first round hole sieve plate section 1603 is with the sand that the size is less than 50mm, the screening of stone mixture gets into mud stone chute 21 and flows to next production technology system, the sand that size more than or equal to 50mm, the stone mixture is carried to stone breaker 17 through first ejection of compact spiral blade section 1604 and is carried out further processing.

Grit screening production line 2: the sand, stone and slurry mixture flowing from the mud-stone launder 21 is conveyed to a stone vibration screening device 23 through a stone lifting and washing device 22, the stone lifting and washing device 22 is usually a chain bucket type stone lifting device, in the lifting and washing process of the stone lifting and washing device 22, the sand and stone mixture meeting the size specification is cleaned with water and drained, and conveyed to the stone vibration screening device 23, screened according to different grain diameters and respectively stacked to different stone material yards 24, the specific screening standard can be executed according to GB/T14685-2001 building pebbles and gravels, and the specific grain diameter specification can be respectively 4.75mm-9.5mm, 9.5mm-16mm, 16mm-19mm, 19mm-26.5mm, 26.5mm-31.5mm, 31.5mm-37.5mm and 37.5mm-53 mm; then, the remaining sand materials are washed by water and drained by a sand material washing device 25 and are conveyed to a sand material vibration screening device 26, the sand material vibration screening device 26 screens the sand materials according to different particle sizes and respectively piles the sand materials to different sand material yards 24, the screening standard can be executed according to the GB/T14685-2001 dimension standard of construction pebbles and gravels, and the particle sizes can be respectively 0.15mm-0.3mm, 0.3mm-0.6mm, 0.6mm-1.18mm, 1.18mm-2.36mm and 2.36mm-4.75 mm; the remaining slurry water is completely gathered into the slurry pond 31 and enters the slurry treatment device. The mud-rock launder 21 is partially provided with a mud-water overflow device 27 so that part of mud-water can directly overflow to a mud-water pool 31, the mud-rock launder 21 is of a concrete structure, is connected with an outlet of the sand-rock screening roller device in front and is connected with the mud-water pool 31 in back, and sand-rock and mud-water mixture can flow from high to low in the front and back according to the production process flow.

Slurry treatment production line 3: the slurry in the slurry tank 31 is transported to the slurry sedimentation tank 32, wherein the bottom of the slurry tank 31 is made of reinforced concrete structure and is inclined towards one end, so that the soil dissolved in the water can be conveniently sedimentated to the lower end of the slurry tank, and the water containing less mud and sand is arranged at the higher end. The mud sedimentation tank 32 includes a plurality of small sedimentation tanks, each of which includes a mud injection port and a dewatering pump and can be operated independently. A lower cone is arranged above each small sedimentation tank, and a thick slurry pump is arranged at the bottom of each small sedimentation tank; the mud is conveyed to a mud dewatering device 33 for dewatering treatment, and can be filled into the mud dewatering device 33 for filtering and dewatering through a thick mud pump at multiple points, so as to form mud cakes, the extruded and filtered water is precipitated to form clear water, the clear water is filtered and collected, the clear water and the mud and silt in the mud are gradually formed by sinking the mud and the silt to the surface layer, the clear water and the silt are filtered and collected together, the high-pressure water impact separation device 12, the medium-fine gravel screening roller device 15, the coarse gravel screening roller device 16, the stone providing and washing device 24 and the sand providing and washing device 27 are used again, the mud and the silt at the bottom of a mud sedimentation tank 32 are conveyed to the mud dewatering device 33, the mud dewatering device 33 consists of a plurality of groups of screw extrusion devices, the water content can be reduced to below 35% after dewatering, the dewatered mud and the silt are collected and reused, the dewatered mud and the silt enter a mixing device 34, and shale materials with the mass ratio of 13% -16%, the completion is stirred the back and is formed high performance pug, and high performance pug is carried to extrusion device 35, complete brickmaking to stack to pile up neatly and dry stock ground 36, thereby carry out the nature and shine or air-dry, and firing device 37 is put into to the brick after the completion dries, thereby accomplishes the sintering and becomes building brick. The sintering quality needs to meet the relevant standards of GB 5101-2003 'sintered common bricks' and GB13544-2011 'sintered porous bricks and porous building blocks'. When the water is insufficient in all water-requiring process links, the water can be supplemented by tap water.

This embodiment forms the silt particle and makes the thick liquid through the combined action with high sand content building dregs at thick steel bar net separator 13 and high pressure water impact separator 12, and the silt particle dissolves in water with higher speed, and then through thick, well fine grit separation mode, improves the separation efficiency of silt, sand, stone, but whole process flow continuity production need not to wait for the production of certain link in the middle.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (7)

1. The utility model provides a building dregs scene recovery system of recycling which characterized in that includes:

the sand-stone separation production line comprises a coarse steel bar separation device, a double-helix sand washing device, a coarse sand-stone screening roller device and a medium-fine sand-stone screening roller device;

the coarse steel bar separation device is used for separating building muck, screening coarse stones or mud blocks with the particle size of more than 60mm to the coarse gravel screening roller device, and screening medium-fine silt slurry with the particle size of less than 60mm to the double-helix sand washing device;

the double-helix sand washing device comprises a feed chute, a double-helix sand washing machine, a driving system and a discharge chute, wherein the feed chute, the double-helix sand washing machine, the driving system and the discharge chute are sequentially arranged;

the coarse gravel screening roller device is arranged in an inclined manner at an angle of 4-6 degrees, an inlet is positioned on the high side, an outlet is positioned on the low side, the coarse gravel screening roller device comprises a first feeding spiral blade segment, a first gravel frying and washing segment, a first round-hole sieve plate segment and a first discharging spiral blade segment, the length of the double-screw sand washing device is 12-15m, and the diameter of the double-screw sand washing device is 3.0-3.2 m;

the medium and fine sand screening roller device is arranged in an inclined manner at an angle of 5-8 degrees, an inlet is positioned on the high side, an outlet is positioned on the low side, the medium and fine sand screening roller device comprises a second feeding spiral blade segment, a second sand stir-frying and washing segment, a second round hole sieve plate segment and a second discharging spiral blade segment, the length of the medium and fine sand screening roller device is 16-18m, and the diameter of the medium and fine sand screening roller device is 2.2-2.5 m;

grit screening production line includes: the mud-rock launder is used for collecting sand, stone and muddy water mixture, the stone material washing device is used for washing the mixture and conveying the mixture to the vibration screening device, the vibration screening device is used for screening sand materials with different particle sizes,

a slurry treatment line comprising: a slurry sedimentation tank, a slurry dehydration device, a mixing device, an extrusion device and a firing device;

the mud sedimentation tank is used for collecting mud and sedimentating, the mud dewatering device is used for dewatering the mud after sedimentation, the mixing device is used for mixing silt, soil and shale materials, the extrusion device is used for extrusion molding to manufacture building bricks, and the firing device is used for sintering the building bricks.

2. The construction waste site recycling system according to claim 1, characterized in that:

the coarse mesh reinforcement separating device is obliquely arranged at an angle of 45-50 degrees, the length is 7-8m, the width is 3.5-4m, the side length of gaps of mesh meshes of the mesh reinforcement is 60mm, the diameter of transverse steel bars is 50mm, and the diameter of longitudinal steel bars is 40 mm.

3. The construction waste site recycling system according to claim 2, characterized in that:

and the transverse steel bars of the coarse steel bar net separating device are arranged above the longitudinal steel bars.

4. The construction waste site recycling system according to claim 1, characterized in that:

the double helix of the double helix sand washing device is arranged in parallel, and the rotation direction is towards the middle.

5. The construction waste site recycling system according to claim 1, characterized in that:

the bottom of the mud sedimentation tank is made of a reinforced concrete structure, and the bottom of the mud sedimentation tank is obliquely arranged towards one end.

6. The construction waste site recycling system according to claim 1, characterized in that:

the mud sedimentation tank comprises a plurality of small sedimentation tanks, and each sedimentation tank comprises a mud injection port and a dewatering pump.

7. The construction waste site recycling system according to claim 1, characterized in that:

the slurry dewatering device is a screw extrusion device.

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