CN117258991B

CN117258991B - Construction Sand Purification System

Info

Publication number: CN117258991B
Application number: CN202210669480.5A
Authority: CN
Inventors: 陈火城; 陈泽鑫; 李炀
Original assignee: Xiamen Zhongsha Technology Co ltd
Current assignee: Xiamen Zhongsha Technology Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2025-12-12
Anticipated expiration: 2042-06-14
Also published as: CN117258991A

Abstract

This invention discloses a sand purification device and system for construction use, belonging to the field of sand purification for construction use. It includes a washing tank and a supporting structure, with the washing tank mounted on the supporting structure. The washing tank is inclined from top to bottom, with an open upper side. The top of the washing tank is the inlet, and the bottom is the outlet. A sloping flushing channel is formed between the inlet and outlet. During use, sand and water are fed into the inlet, flushing the sand and water in the washing tank. Harmful substances enter the water, and the sand and water are discharged from the outlet, entering a sand-water separator for separation. Harmful substances are discharged with the water. This invention can purify sea sand to the state of river sand before it enters the sea, making it safe to use like river sand. The chloride ion content can reach 0.000%–0.002%. This invention can effectively remove the sharp edges, needle-like particles, and weathered layers from the surface of manufactured sand. This invention has a simple structure, reliable operation, and low production cost.

Description

Sand purifying system for construction

Technical Field

The invention relates to the field of construction sand purification, in particular to a construction sand purification system.

Background

In construction engineering, concrete and construction mortar are used in large quantities. The sand for construction is used as an important component in the concrete composition in a great amount in construction engineering, the sand is used as a fine aggregate of the concrete, and the strength, the surface activity, the grading, the particle shape, the cleanliness and the like of the sand greatly influence the workability, the strength and the durability of the concrete due to harmful substances such as organic matters, mud blocks, chloride ion content and the like, and are directly related to the quality safety of the construction engineering.

The construction sand comprises natural river sand, sea sand, machine-made sand and reclaimed sand, and since the concrete is self-produced, the river sand is used as the fine aggregate of the concrete, and the use of the river sand for more than one hundred years proves that the river sand is the fine aggregate with the cheapest concrete, the safest and most reliable concrete and the best durability. However, with the use of large-scale construction, the sand source of high-quality river sand is basically exhausted, and people start to utilize secondary river sand with more impurities, machine-made sand produced by mountain rock breaking and sea sand. However, the existing available river sand basically contains more impurities, the machine-made sand has more needle-shaped pieces and shuttle angles, the sand body has poor roundness, meanwhile, the sand surface or contains fragments or weathered layers, the working performance is poor, the durability is also greatly affected, and the sea sand contains a large amount of chloride ions and other harmful substances, so that the durability and the safety of engineering are affected. Therefore, these sands must be further cleaned for safe use.

Currently, the main equipment for cleaning construction sand is still conventional cleaning equipment for cleaning river sand and a cleaning system formed by combining the equipment. The equipment mainly comprises a spiral sand washer, a wheel bucket type sand washer, a chain bucket type sand washer, a sand-water separator, a waste screening machine and the like. The sand washers all adopt motor driving modes, and are complex in structure, low in yield, large in power consumption and high in electric power energy consumption. And the device is easy to be broken down and damaged when the device is operated for a long time in a complex environment, and the maintenance cost for the long-time operation is high.

The traditional sand cleaning equipment is used for washing sea sand and machine-made sand, the running speed of the equipment is low, the relative movement speed of the sand and the sand cleaning equipment is low in the running process, and the impact and friction force of the sand and the equipment are small. The method is suitable for removing mud in river sand, but for the edges and corners of machine-made sand, needle-shaped, weathered layers, organic matter film layers in sea sand, chloride ions and other harmful substances can not be effectively removed, the quality of the machine-made sand and the sea sand is affected, and the safety and durability of concrete and mortar are affected.

Disclosure of Invention

The invention provides a construction sand purifying device and system, which have the advantages of simple structure, low cost, simplicity, rapidness, high efficiency and stability, can remove mud, clods, chloride ions and organic matters on the surface of construction sand, effectively reduce edges and corners of machine-made sand, needle-shaped and sand surface weathering layers and the like, obtain rounding, and ensure that the concrete made of the treated construction sand has the advantages of good durability and low cost, and can be safely and widely applied to buildings and municipal works.

The technical scheme provided by the invention is as follows:

The utility model provides a sand purification device for construction, includes washing tank and bearing structure, the washing tank is installed bearing structure is last, wherein:

The washing tank is according to the spiral structure setting that the slope of from the top down spirals, the upside of washing tank is open structure, the top of washing tank is the feed inlet, and the bottom is the discharge gate, the washing tank is in form the spiral structure's that the slope from the top down spirals wash the flow channel between feed inlet and the discharge gate.

Further, the cleaning tanks forming the spiral structures are all curved, or the cleaning tanks forming the spiral structures are partially curved and partially linear.

Further, the supporting structure comprises a supporting upright post and a plurality of transverse branches, the supporting upright post is vertically arranged on the inner side or the outer side of the spiral structure formed by the cleaning groove, one end of each transverse branch is arranged on the supporting upright post, the other end of each transverse branch is suspended, and the cleaning groove is arranged on each transverse branch.

Further, the number of the supporting columns is one or more, a plurality of the transverse branches are distributed on the supporting columns according to a spiral structure from top to bottom, and the cleaning tanks are installed on the transverse branches through clamping.

Further, the supporting structure further comprises a reinforcing diagonal brace, one end of the reinforcing diagonal brace is fixedly connected with the supporting upright post, and the other end of the reinforcing diagonal brace is fixedly connected with the transverse branch rod.

Further, the support structure comprises a plurality of support units, each support unit comprises an inner upright post and an outer upright post, the inner upright posts and the outer upright posts are respectively located on the inner side and the outer side of the spiral structure formed by the cleaning groove, the inner upright posts and the outer upright posts are connected together through a plurality of transverse struts, and the cleaning groove is installed on the transverse struts.

Further, an overhaul pavement and/or a guardrail is arranged on the inner side or the outer side of the cleaning tank with the spiral structure, the overhaul pavement and/or the guardrail is arranged on the supporting structure, and an overhaul cat ladder is arranged at the bottom end of the overhaul pavement.

Further, the spiral-structured cleaning tank includes an inner spiral and an outer spiral, and the service aisle is located between the inner spiral and the outer spiral.

Further, a feeding hopper is arranged on the feeding port, and the bottom of the feeding hopper is communicated with the feeding port through a discharging port.

Further, the cleaning tank comprises an outer shell layer and a wear-resistant layer arranged in the outer shell layer, wherein the outer shell layer and the wear-resistant layer comprise a bottom plate and side wall plates on the left side and the right side, the bottom plate and the side wall plates of the outer shell layer and the wear-resistant layer respectively form a groove structure with an open upper side, and the groove structure of the wear-resistant layer is arranged in the groove structure of the outer shell layer.

Further, the cleaning tank is of an integral structure;

Or the cleaning tank is formed by sectional assembly of a plurality of sections of tank bodies, assembly flanges are arranged on the outer sides of the front end and the rear end of the bottom plate and the side wall plate of the outer shell layer of each section of tank body, two adjacent sections of tank bodies are fastened and fixed by bolt pins, and reinforcing rib plates are arranged between the assembly flanges and the bottom plate and the side wall plate of the outer shell layer.

Further, a blocking object for improving the impact frequency of sand in the cleaning tank and changing the movement direction and force of the sand is arranged in the cleaning tank.

Further, the interference inhibitor is a concave-convex object arranged at the bottom and/or at two sides in the cleaning tank, or is a steel bar grating arranged in the cleaning tank.

The construction sand purification system comprises a first sand-water separator and a construction sand purification device, wherein a discharge hole of the construction sand purification device is connected with the first sand-water separator.

Further, the construction sand purifying device is also provided with a raw sand feeding machine, a waste screening machine and a sand-water mixing and conveying device which are sequentially arranged in front of the construction sand purifying device;

The sand-water mixing and conveying device comprises a sand water tank, a sand-water stirrer, a suction pipeline and a suction pump, wherein the first end of the suction pipeline is inserted into the sand water tank, the second end of the suction pipeline is connected with a feed inlet of the construction sand purifying device, and the suction pump is arranged on the suction pipeline;

the number of the construction sand purifying devices is one or more, when the number of the construction sand purifying devices is multiple, the construction sand purifying devices are sequentially arranged in front of and behind each other, and one sand-water mixing and conveying device is arranged in front of the foremost construction sand purifying device and between two adjacent construction sand purifying devices;

And the discharge port of the last construction sand purification device is connected with the first sand-water separator, or the discharge port of each construction sand purification device is connected with one first sand-water separator.

Further, the construction sand purifying device is characterized by further comprising a raw sand feeding machine, a waste screening machine, a sand washing machine, a second sand-water separator and a lifting feeding device which are sequentially arranged in front of and behind the construction sand purifying device;

the lifting feeding device is connected with a feeding port of the construction sand purifying device, and a water inlet pipe is further arranged at the feeding port of the construction sand purifying device;

The number of the construction sand purifying devices is one or more, when the number of the construction sand purifying devices is multiple, the construction sand purifying devices are sequentially arranged front and back, and one lifting and feeding device is arranged in front of the forefront construction sand purifying device and between two adjacent construction sand purifying devices;

Further, when the number of the construction sand purifying devices is multiple, the discharge port of each or the last construction sand purifying device is connected with a sand water collecting pool.

Further, the sand water collecting tank is provided with a sand water splash-proof device.

Further, a dewatering device is arranged after all or part of the first sand-water separator.

The invention has the following beneficial effects:

The method can remove harmful substances of the construction sand simply, quickly, efficiently and stably, can effectively remove the harmful substances such as mud, clod and the like in the river sand when the method is used for cleaning the river sand, can effectively remove the harmful substances such as edges and corners of the machine-made sand, needle-shaped objects, weathered layers on the surface of sand grains and the like when the method is used for cleaning the machine-made sand, and obtains rounding, can quickly and effectively remove the harmful substances such as chloride ions and organic matters adsorbed on the surface of the sea sand when the method is used for cleaning the sea sand, can achieve the chloride ion content of 0.000% -0.002% after the sea sand is treated, can restore the sea sand into a river sand state, can be used as safely as the river sand, and the treated purified sea sand is superior to the corresponding industry and national construction sand standard.

The concrete prepared from the sand treated by the method can not cause steel bar corrosion and concrete deterioration, has good durability, and can be safely and widely applied to buildings and municipal engineering. Meanwhile, the invention has the characteristics of simple structure, stable and reliable operation and low cost, can meet the cleaning requirements of different types of sand, and has wide market prospect.

Drawings

FIG. 1 is a perspective view of one implementation of a construction sand purification device of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a perspective view of another implementation of the construction sand purification device of the present invention;

FIG. 5 is a perspective view of yet another implementation of the construction sand purification device of the present invention;

FIG. 6 is a perspective view of yet another implementation of the construction sand purification device of the present invention;

FIG. 7 is an exploded view of a section of the tank body of the cleaning tank;

FIG. 8 is a schematic view of an outer shell layer;

FIG. 9 is a schematic view of a wear layer;

FIG. 10 is a schematic diagram of one implementation of a first embodiment of a construction sand purification system of the present invention;

FIG. 11 is a schematic diagram of another implementation of one embodiment of a construction sand purification system of the present invention;

FIG. 12 is a schematic view of a sand-water mixing and conveying apparatus of mode one;

FIG. 13 is a schematic diagram of a second embodiment of a construction sand purification system according to the present invention;

FIG. 14 is a side view of a sand water pooling pool;

FIG. 15 is a perspective view of a sand water pooling tank.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Example 1:

the embodiment of the invention provides a construction sand purifying device 100, as shown in fig. 1-9, comprising a cleaning tank 1 and a supporting structure 2, wherein the cleaning tank 1 is arranged on the supporting structure 2, and the construction sand purifying device comprises the following components:

The cleaning tank 1 is arranged according to a spiral structure which is inclined from top to bottom, the upper side surface of the cleaning tank 1 is of an open structure, and a groove structure with an open upper side is formed.

The top of washing tank 1 is feed inlet 3, and the bottom is discharge gate 4, and washing tank 1 is the channel of the mixed stream of sand water of suspension, and the cross-sectional shape of washing tank 1 can be U type, semicircle, rectangle or other open structures of regular, irregular shape, and this structure can satisfy the inside sand water mixed stream of groove and carry out the requirement of washing, makes washing tank 1 form the spiral structural washing channel that spirals to the slope from top to bottom between feed inlet 3 and discharge gate 4, and the sand water mixed stream is followed spiral washing channel from the top down under the effect of gravity and is washed.

The washing tank 1 forming the spiral structure can be all curved to form a spiral structure which is curved in the whole process, or can be partially curved to form a straight line, and can form a spiral structure which is partially straight line and partially curved.

When the invention is used, sand and water are added into the cleaning tank 1 through the feed inlet 3, the mixed solution of sand and water flows in the spiral flushing channel of the cleaning tank 1 from top to bottom under the combined action of the water flow flushing force and the self gravity of the sand and water, the cleaning tank 1 does not need to drive mechanical equipment and is not required to be provided with a motor, a speed reducer and other driving devices, and the invention has the advantages of simple structure, high yield, small power consumption, low cost, low failure rate and low maintenance cost.

The mixed liquid of sand and water can form a suspension state in the process of flushing, sand grains move in the water at high speed, the sand and the water collide strongly with the wall of the cleaning tank 1, friction is generated between the sand and the wall of the cleaning tank, the collision speed of the sand is increased when the sand water passes through the bending part in the process of flushing, the direction of the mixed liquid of the sand and the water is changed continuously along the spiral flushing tank, and the collision and friction effects of the sand are enhanced through the multi-angle change flushing of the sand and the water. Through the mode, the conditions of sand suspension and high-speed flushing and the conditions of high-speed movement, impact and friction of the sand are created, mud, clay blocks and the like in the sand can be effectively stripped into the water through friction, the edges and corners of machine-made sand and needle-shaped structures can be crushed, stripped and ground into the water by the weathering layer on the surface of the sand, the sand is rounded, and chloride ions on the surface of sea sand and in gaps and harmful substances such as organic matters adsorbed on the sand can be stripped into the water.

And after the flushing of the sand-water mixed solution is finished, discharging the sand-water mixed solution from a discharge port 4, entering a subsequent sand-water separator, a dewatering screen and the like, separating sand and water by the sand-water separator, discharging harmful substances stripped from the surface of the sand body along with the water discharged by the sand-water separator, and further dewatering the sand discharged from the sand-water separator by the dewatering screen to finally obtain finished sand, and conveying the finished sand to a finished storage yard.

In summary, the method can remove harmful substances of the construction sand simply, rapidly, efficiently and stably, can effectively remove mud, clod and other harmful substances in the river sand when the method is used for cleaning the river sand, can effectively remove the harmful substances of edges and corners of the machine-made sand, needle-shaped objects, weathered layers on the surface of sand grains and the like when the method is used for cleaning the machine-made sand, and can obtain rounding, can rapidly and effectively remove the harmful substances of chloride ions, organic substances and the like adsorbed on the surface of the sea sand when the method is used for cleaning the sea sand, the chloride ion content of the sea sand after the sea sand is treated can reach 0.000% -0.002%, the sea sand can be reduced into a river sand state, the sea sand can be used safely as the river sand, and the treated purified sea sand is superior to the corresponding industry and national construction sand standard.

The invention does not limit the specific implementation mode of the supporting structure, and the supporting structure only has the function of realizing the installation and fixation of the cleaning tank device, so the supporting structure with any different structural forms belongs to the protection scope of the invention. Further description will be made by way of examples.

Example one:

As shown in fig. 1 to 4, the support structure 2 of this example includes a support column 5 and a plurality of lateral branches 6, the support column 5 is vertically disposed inside or outside a spiral structure formed by the cleaning tank 1, one end of the lateral branches 6 is disposed on the support column 5, and the other end is suspended to form a structure similar to a tree branch, and the cleaning tank 1 is mounted on the lateral branches 6.

The number of the supporting upright posts 5 can be one or a plurality of the supporting upright posts, a plurality of the transverse branches 6 are distributed on the supporting upright posts 5 according to a spiral structure from top to bottom, and the cleaning tank 1 can be arranged on the spirally distributed transverse branches 6 through a clamping structure and the like.

The supporting structure 2 can further comprise a reinforcing diagonal brace 7, one end of the reinforcing diagonal brace 7 is fixedly connected with the supporting upright 5, and the other end of the reinforcing diagonal brace is fixedly connected with the transverse branch 6, so that the reinforcing diagonal brace 6 is fixedly reinforced.

The support column 5 can be a hollow column with a circular tube-shaped structure, concrete can be poured into the hollow part, and the anti-corrosion performance of the support column 5 can be improved while the strength of the support column 5 is enhanced.

The lower end of the support column 5 may be provided with a column foot flange 8 for connection with a prefabricated foundation, and the upper end may be provided with a top flange 9 for connection with a hoisting mechanism. The hoisting mechanism can be used for auxiliary hoisting, and is convenient for early installation and later maintenance of the cleaning tank 1.

Example two:

As shown in fig. 5, the support structure 2 of the present example includes a plurality of rack units 11, each rack unit 11 includes an inner side column 12 and an outer side column 13, the bottom ends of the inner side column 12 and the outer side column 13 are connected to the prefabricated foundation, and the inner side column 12 and the outer side column 13 are respectively located inside and outside the spiral structure formed by the washing tub 1, the inner side column 12 and the outer side column 13 are connected together by a plurality of cross braces 14, and the washing tub 1 is mounted on the cross braces 14.

As an improvement of the embodiment of the present invention, as shown in fig. 5, the inside or outside of the spiral-structured cleaning tank 1 is provided with an inspection walkway 36 and/or a guard rail 37, the inspection walkway 36 and/or the guard rail 37 are respectively provided in a spiral-structured manner, the inspection walkway 36 is located inside (or outside) the spiral structure of the cleaning tank 1, and the guard rail 37 is located inside (or outside) the spiral structure of the inspection walkway 36. The service walkway 36 and the guard rail 37 are mounted on the support structure 2 in a manner consistent with the manner in which the washing tub 1 is mounted. The bottom of the overhaul pavement 36 is provided with an overhaul ladder 38, the upper end of the overhaul ladder 38 is connected with the overhaul pavement 36, the lower part is positioned on the ground, and the overhaul ladder 38 enters the overhaul pavement 36.

The spiral-structured wash tank may include an inboard spiral 46 and an outboard spiral 47 with the service aisle 36 being located between the inboard spiral 46 and the outboard spiral 47, as shown in fig. 6. The inner and outer spiral structures can fully utilize the space.

The feeding port 3 of the invention can be provided with a feeding hopper 39, and the bottom of the feeding hopper 39 is communicated with the feeding port 3 through a discharging port 40.

The feeding hopper 39 can be added with the mixed sand-water mixed solution and then enters the feeding port 3 through the discharging port 40, the feeding hopper 39 can be also added with sand and water respectively, the sand and the water are fully mixed in the feeding hopper 39 to form the sand-water mixed solution, and then the sand-water mixed solution enters the feeding port 3 through the discharging port 40 so as to enter the cleaning tank 1.

As shown in fig. 7 to 9, the cleaning tank 1 may include an outer shell layer 41 and a wear-resistant layer 42 located in the outer shell layer 41, wherein the outer shell layer 41 and the wear-resistant layer 42 each include a bottom plate and side wall plates on the left and right sides, the bottom plate and the side wall plates of the outer shell layer 41 and the wear-resistant layer 42 each form a groove-type structure with an open upper side, and the groove-type structure of the wear-resistant layer 42 is located in the groove-type structure of the outer shell layer 41.

The outer shell layer 41 and the wear-resistant layer 42 can be formed by bending or injection molding a plate, the outer shell layer 41 can be made of stainless steel, common steel, glass fiber reinforced plastic, plastic or other strong and shapable materials, and the wear-resistant layer 42 can be made of wear-resistant materials such as stone plates, vitrified tiles, manganese steel, tungsten steel, wear-resistant alumina patches, polyurethane or wear-resistant rubber.

In some examples, the cleaning tank 1 may be a unitary structure, and the unitary structure cleaning tank 1 is integrally manufactured and then integrally hoisted to the support structure 2.

In other examples, the cleaning tank 1 is formed by assembling a plurality of sections of tank bodies in a segmented manner, as shown in fig. 7-9, assembling flanges 43 are arranged on the outer sides of the front end and the rear end of the bottom plate and the side wall plate of the outer shell layer 41 of each section of tank body, two adjacent sections of tank bodies are fastened and fixed by bolt pins, and reinforcing rib plates 44 are arranged between the assembling flanges 43 and the bottom plate and the side wall plate of the outer shell layer 41.

As another improvement of the embodiment of the invention, the cleaning tank 1 can be internally provided with a disturbing object 45 for improving the impact frequency of sand in the cleaning tank 1 and changing the movement direction and force of the sand, so as to improve the impact and friction effects of the sand body. The number of the interference objects 45 may be plural, and the interference objects may be disposed at intervals in the direction of the sand water movement in the washing tank 1. Under the blocking of the interference inhibitor 45, the sand generates high-speed oblique throwing and impact blocking, which is more beneficial to the peeling of harmful substances such as mud, chloride ions, organic matters and the like on the surface of the sand body and the reduction of substances such as edges and corners, needle-shaped sheets, surface weathered layers and the like of the sand body.

The obstacle 45 may be a concave-convex object provided at the bottom and/or both sides of the inside of the washing tub 1 as shown in fig. 9, or the obstacle may be a bar grating provided in the washing tub, or other obstacles of various shapes, etc. All the interference objects which can form interference, impact and friction with the sand water flowing in the cleaning tank and are made of various materials and have various shapes are novel protection ranges of the application.

The obstacle 45 may be provided at a non-bent portion of the cleaning tank 1, and may be provided at a bent portion, which is not limited to the present invention.

Example 2:

The embodiment of the invention provides a construction sand purification system, which comprises a first sand-water separator 200 and the construction sand purification device 100 described in the embodiment 1, as shown in fig. 10-13, wherein a discharge port 4 of the construction sand purification device 100 is connected with the first sand-water separator 200.

When the sand purifying device 100 is used, the mixed solution of sand and water flows in the cleaning tank 1, sand grains move in the water at high speed, and strong collision and friction are carried out on sand bodies, so that harmful substances of river sand, machine-made sand and sea sand are removed into the water. Then the sand-water mixed liquor is discharged from the discharge port 4, sand-water separation is carried out through the first sand-water separator 200, harmful substances peeled from the surface of the sand body are discharged along with water, and the sand separated from the sand-water separator can be formed into finished sand to be transported to a finished storage yard.

Alternatively, the first sand-water separator 200 may be a centrifugal sand-water separator, a spiral sand washer, or a bucket-type sand washer or other equipment capable of separating sand from water.

The construction sand purification system of the present invention may also include other ancillary equipment, which may be provided in a number of ways including, but not limited to, the following.

Mode one:

as shown in fig. 10 and 12, the construction sand purification apparatus 100 further includes a raw sand feeder 300, a waste screening machine 400, and a sand-water mixing and transporting apparatus 700, which are disposed in this order.

During production, raw sand is conveyed through a loader or a self-unloading ground bin, and is lifted and fed to a high-position waste screening machine 400 through a raw sand feeding machine 300, and large-particle solid waste is screened out through the waste screening machine 400. The waste screening machine 400 may be provided with a pre-cleaning device, after the raw sand removes the large-particle solid waste, the raw sand enters the sand-water mixing and conveying device 700, the sand-water mixing and conveying device 700 comprises a sand water tank 701, a sand-water stirrer 702, a suction pipeline 703 and a suction pump 704, the first end of the suction pipeline 703 is inserted into the sand water tank 701, the second end is connected with the feed inlet 3 or the feed hopper 39 of the sand cleaning device 100, and the suction pump 704 is arranged on the suction pipeline 703.

The sand water tank 701 is used as a mixing container for added sand and water, the sand water stirrer 702 is used for stirring the sand water tank 701 to form a suspended sand water mixed flow, and the sand water mixed flow is sent into the cleaning tank 1 of the cleaning device 100 for cleaning and purifying through the suction pipeline 703 under the positive pressure or/and the negative pressure suction of the suction pump 704.

The sand-water stirrer 702 comprises a stirring motor 705, the stirring motor 705 is positioned outside the sand water tank 701, a stirring rod 706 is arranged on an output shaft of the stirring motor 705, a plurality of stirring blades 707 are arranged on the stirring rod 706, and the stirring blades 707 are positioned inside the sand water tank 701.

A cover plate 708 can be arranged above the sand water tank 701, the stirring motor 705 is arranged above the cover plate 708 in a mode that an output shaft is downward, the stirring rod 706 passes through a first through hole on the cover plate 708 downward to enter the sand water tank 701, and the stirring blades 707 on the stirring rod 706 at the lower end are driven by the stirring motor 705 to stir the sand and water in the sand water tank 701 to rotate at a high speed, so that a suspended sand-water mixed flow is formed.

Suction pump 704 may be disposed above cover plate 708, with a first end of suction line 703 inserted into sand basin 701 through a second through hole in cover plate 708.

A sand feeder 711 is arranged above the cover plate 708, the bottom of the sand feeder 711 penetrates through the cover plate 708 to enter the sand pool 701, and the upper part of the sand feeder 711 is connected with the outlet of the previous device.

In this embodiment, the waste classifier 400 may be used to remove harmful substances such as a surface sludge layer of the raw sand by washing with a pre-washing device.

For example, the pre-cleaning equipment can be a sand washer 500, a second sand-water separator 600 and the like, as shown in fig. 11, and the sand with the large-particle solid waste removed enters the sand washer 500 for treatment and the surface mud layer of the raw sand is washed off. The sand washer 500 may be a washing device such as a washing tank or a washing pipeline, or may be an existing device such as a wheel bucket sand washer, a spiral sand washer, a bucket-type sand washer, or other sand washing devices.

When the sand washer 500 is a flushing tank, the flushing tank is obliquely arranged, the inlet of the flushing tank is higher than the outlet, sand screened by the waste screening machine enters the flushing tank, high-pressure water is pumped into the flushing tank, under the common action of hydrodynamic force and self gravity of the sand, mixed liquid of the sand and the water flows from high to low in the flushing tank at a high speed, and the sand in the flushing tank is flushed and washed by water flow at a high speed to remove harmful substances such as mud layers on the surface of the raw sand.

Sand washed by the sand washer 500 is separated by a second sand-water separator 600, the second sand-water separator 600 can be a centrifugal sand-water separator, and the separated sand enters the sand-water mixing and conveying device 700.

In this embodiment, the number of the construction sand purification devices 100 is one or more, and they may be used alone or in combination according to the degree of difficulty in cleaning the sea sand in different sea areas and the condition of the sand cleaning plant. When the number of the construction sand-purifying devices 100 is plural, the plural construction sand-purifying devices 100 are sequentially provided one after the other, and the plural construction sand-purifying devices 100 are combined and reused, the number of repetitions is not limited to two, three, four, five, six, or the like.

At this time, a sand-water mixing and transporting device 700 is provided in front of the foremost construction sand-purifying device 100 and between two adjacent construction sand-purifying devices 100, and the discharge port 4 of the last construction sand-purifying device 100 is connected to the first sand-water separator 200.

Optionally, a dewatering device 800 is disposed after all or part of the first sand water separator 200 and the second sand water separator 600, which may be a dewatering screen or other dewatering apparatus.

Mode two:

As shown in fig. 13, the construction sand purification apparatus 100 further includes a raw sand feeder 300, a waste screening machine 400, a sand washer 500, a second sand-water separator 600, and a lift feeder 900, which are disposed in this order. The lifting and feeding device 900 is connected with the feed inlet 3 of the sand purifying device 100 for construction, and a water inlet pipe is further arranged at the feed inlet 3 of the sand purifying device 100 for construction.

The sand treated by the second sand-water separator 600 is fed into the feed hopper 39 through the lifting and feeding device 900, water is fed into the feed hopper 39 through a water inlet pipe and the like, and the sand and water in the feed hopper 39 are fully mixed to form a sand-water mixed solution, and the sand-water mixed solution enters the cleaning tank 1 from the feed inlet 3.

In this embodiment, similarly to the first embodiment, the number of the construction sand-purifying devices 100 may be one or more, and when the number of the construction sand-purifying devices 100 is plural, the plural construction sand-purifying devices 100 are disposed one after the other, and one lifting and feeding device 900 is disposed in front of the former construction sand-purifying device 100 and between the two adjacent construction sand-purifying devices 100.

In this embodiment, the discharge port of the last construction sand purification apparatus 100 is connected to the first sand-water separator 200, or the discharge port of each construction sand purification apparatus 100 is connected to one first sand-water separator 200.

Optionally, a dewatering device 800 is provided after all or part of the first sand-water separator 200 and the second sand-water separator 600.

When the number of the construction sand purifying devices 100 is plural, the sand water collecting tank 10 is connected to the discharge port 4 of each or the last construction sand purifying device 100, as shown in fig. 14 and 15, and the sand water collecting tank 10 may be provided with a sand water splash preventing device (cover plate, etc.).

The construction sand purification system of this embodiment includes all the technical solutions of the construction sand purification device of embodiment 1, which has the beneficial effects described in embodiment 1, and will not be described herein. Other points not mentioned in this embodiment are referred to in the foregoing embodiment 1.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. The utility model provides a sand clean system for construction, its characterized in that includes first sand water separator and construction sand purification device, construction sand purification device's discharge gate with first sand water separator is connected, construction sand purification device includes washing tank and bearing structure, the washing tank is installed bearing structure is last, wherein:

The cleaning tank is arranged according to a spiral structure which is inclined and spiral from top to bottom, the upper side surface of the cleaning tank is of an open structure, the top end of the cleaning tank is provided with a feed inlet, the bottom end of the cleaning tank is provided with a discharge outlet, and a flushing channel of the spiral structure which is inclined and spiral from top to bottom is formed between the feed inlet and the discharge outlet;

The cleaning tank is internally provided with a plurality of interference objects for improving the impact frequency of sand in the cleaning tank and changing the movement direction and force of the sand, and the interference objects are arranged at intervals in the movement direction of sand water in the cleaning tank;

The interference object is a concave-convex object arranged at the bottom and/or at two sides in the cleaning tank, or is a steel bar grating arranged in the cleaning tank;

The construction sand purifying device is characterized by further comprising a raw sand feeding machine, a waste screening machine and a sand-water mixing and conveying device which are sequentially arranged in front of the construction sand purifying device;

The discharge port of the last construction sand purification device is connected with the first sand-water separator, or the discharge port of each construction sand purification device is connected with one first sand-water separator;

Or the front part of the construction sand purifying device also comprises a raw sand feeding machine, a waste screening machine, a sand washing machine, a second sand-water separator and a lifting feeding device which are sequentially arranged from front to back;

2. The construction sand purification system according to claim 1, wherein the cleaning tanks forming the spiral structure are all curved, or the cleaning tanks forming the spiral structure are partially curved and partially linear.

3. The construction sand purification system according to claim 1, wherein the support structure comprises a support column and a plurality of lateral branches, the support column is vertically arranged on the inner side or the outer side of a spiral structure formed by the cleaning tank, one end of each lateral branch is arranged on the support column, the other end of each lateral branch is suspended, and the cleaning tank is mounted on each lateral branch.

4. A construction sand purification system according to claim 3, wherein the number of support columns is one or more, the plurality of lateral branches are distributed on the support columns in a spiral structure from top to bottom, and the cleaning tanks are mounted on the lateral branches by clips.

5. The construction sand purification system of claim 4, wherein the support structure further comprises a reinforcing diagonal, one end of the reinforcing diagonal being fixedly connected to the support post and the other end being fixedly connected to the transverse branch.

6. The construction sand purification system according to claim 1, wherein the support structure comprises a plurality of rack units, each rack unit comprising an inner column and an outer column, the inner column and the outer column being located respectively inside and outside of the spiral structure formed by the washing tank, the inner column and the outer column being connected together by a plurality of cross braces, the washing tank being mounted on the cross braces.

7. The construction sand purification system according to any one of claims 1-6, wherein an inspection walkway and/or a guardrail is provided on the inner side or the outer side of the spiral-structured cleaning tank, the inspection walkway and/or the guardrail is mounted on the support structure, and an inspection cat ladder is provided at the bottom end of the inspection walkway.

8. The construction sand purification system of claim 7, the helically structured wash tank comprising an inboard spiral and an outboard spiral, the service aisle being located between the inboard and outboard spirals.

9. The construction sand purification system according to any one of claims 1-6, wherein a feed hopper is provided on the feed inlet, and the bottom of the feed hopper is communicated with the feed inlet through a feed opening.

10. The construction sand cleaning system of any one of claims 1-6, wherein the cleaning tank comprises an outer shell layer and a wear layer within the outer shell layer, the outer shell layer and wear layer each comprising a bottom panel and left and right side wall panels, the bottom panel and side wall panels of the outer shell layer and wear layer each forming an open-sided channel structure, the channel structure of the wear layer being within the channel structure of the outer shell layer.

11. The construction sand purification system of claim 9, wherein the cleaning tank is of unitary construction;

12. The construction sand purification system according to claim 1, wherein when the number of the construction sand purification devices is plural, a sand water collecting tank is connected to a discharge port of each or the last construction sand purification device.

13. The construction sand purification system of claim 12, wherein the sand water pooling pool is provided with a sand water splash guard.

14. The construction sand purification system of claim 13, wherein a dewatering device is disposed after all or a portion of the first sand-water separator.