Movable assembly type construction sand purification device and system

Abstract

The application discloses a movable assembled construction sand purification device and system, and belongs to the field of construction sand purification. The sand cleaning equipment is integrated into movable modules according to different functions, and the modules are combined according to process requirements. When used, the modules can be combined, and part of the modules can be reused. Various functional devices are respectively integrated and installed in a box, the box can be transported to a use site by a transport tool, and can be used after unloading and hoisting. Different combination modes can be adopted according to different properties of sand, such as machine-made sand, sea sand or river sand, to form a purification system. The purification system can effectively remove the edges and corners of machine-made sand, needle-shaped sand and weathered layers on the surface of sand particles, effectively remove the chloride salt (chloride ion content can reach 0.000% to 0.002%) and other harmful substances of sea sand, reduce the sea sand into the state of river sand before entering the sea, and can be safely used like river sand, so that the reinforcement corrosion and the deterioration of concrete are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of construction sand purification, in particular to a movable assembled construction sand purification device and system. BACKGROUND

[0002] In the construction engineering, a large amount of concrete and building mortar is used. Construction sand, as an important component of concrete and mortar, is widely used in construction engineering. As fine aggregate of concrete and mortar, the strength, surface activity, gradation, particle shape, cleanliness, and harmful substances such as organic matter, mud, mud blocks, and chloride ion content of sand greatly affect the workability, strength, and durability of concrete and mortar, and are directly related to the quality safety and durability of construction engineering.

[0003] Construction sand includes natural sand (river sand and sea sand), machine-made sand, and recycled sand. Since the invention of concrete, river sand has been used as fine aggregate of concrete. More than a hundred years of use has proved that river sand is the cheapest, safest, most reliable, and most durable fine aggregate for concrete. However, with large-scale construction use, the sand source of high-quality river sand has been basically exhausted, and people have begun to use secondary river sand containing many impurities, machine-made sand made by crushing mountain rocks, and sea sand. However, the existing secondary river sand available basically contains many impurities; machine-made sand has many needle-like and flat-angled particles, and the sand body has poor roundness, and the surface of the sand particles contains fragments or weathering layers, which not only affects the workability of concrete but also has an important impact on durability; sea sand contains a large amount of chloride ions and other harmful substances, which affects the durability and safety of the project. Therefore, these sands must be further cleaned and treated before they can be safely used.

[0004] At present, the main equipment for cleaning construction sand is still the traditional cleaning equipment for cleaning river sand. These devices mainly include screening machines, spiral sand washers, wheel bucket sand washers, chain bucket sand washers, and sand-water separation devices. These sand washers all use motor-driven methods, have complex structures, low production, high power consumption, and high power consumption. And in complex environments, the equipment is prone to failure and damage, and the long-term operation and maintenance cost is high.

[0005] Using traditional sand cleaning equipment to wash construction sand, the equipment runs slowly, and during operation, the relative motion speed of sand and sand cleaning equipment is low, and the impact and friction between sand and sand and between sand and equipment are small. It is suitable for removing mud in river sand, but it has poor effect on removing harmful substances such as organic matter and chloride ions in machine-made sand, angular particles, needle-like particles, and weathering layers, and sea sand, which affects the quality and safe and durable use of machine-made sand and sea sand.

[0006] The existing construction sand purification device and system are all arranged at fixed positions for use, the equipment device needs to be built into a factory building, investment is large, and the device cannot be flexibly moved, and the purification device and system have remarkable advantages especially for projects needing to be frequently changed in position in high-speed rail and road construction. SUMMARY

[0007] The application provides a movable and assembled construction sand purification device and system, which has the advantages of good durability and low cost of concrete made of treated construction sand, and can be safely and widely applied to building and municipal engineering.

[0008] The application provides the following technical solutions:

[0009] A movable and assembled construction sand purification device comprises a movable waste screening module, a sand-water mixing and conveying module, a purification module and a sand-water separation module, wherein:

[0010] The waste screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module all comprise respective containers, and the respective containers of the waste screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module are respectively provided with a waste screening machine, a sand-water mixing and conveying device, a purification pipeline and a sand-water separation machine.

[0011] Further, the sand-water mixing and conveying device comprises a mixing pool, and the mixing pool is provided with a feeding device, a sand-water stirring device, a sand-water mixed flow suction pipeline and a suction pump.

[0012] Further, the purification pipeline is arranged in a spiral structure inclined and coiled from top to bottom, the top end of the purification pipeline is a feeding port, the bottom end is a discharging port, and the purification pipeline forms a spiral structure flow channel between the feeding port and the discharging port.

[0013] Further, the sand-water mixing and conveying module and the purification module are the same module, the sand-water mixing and conveying device and the purification pipeline are located in the same container, and the sand-water mixing and conveying device is located inside the spiral structure formed by the purification pipeline.

[0014] Further, the sand-water mixing and conveying module and the purification module are different modules.

[0015] Further, the purification pipeline is provided with a disturbance device for increasing the impact frequency of sand and water in the purification pipeline and changing the motion direction and intensity of sand and water.

[0016] Further, a maintenance window is formed in the container of the purification module.

[0017] Further, the purification pipeline forms an outer spiral structure and an inner spiral structure, and the inner spiral structure is located inside the outer spiral structure.

[0018] Further, the purification pipeline is a tubular structure with a closed side surface; or a part of the purification pipeline is a groove structure with an open upper side surface, and another part is a tubular structure with a closed side surface; or the purification pipeline is a groove structure with an open upper side surface.

[0019] Further, the sand-water separator is a spiral sand washer or a bucket wheel sand washer.

[0020] Further, the device further comprises a dewatering module, and the dewatering module comprises a container thereof, and a dewatering screen is arranged in the container of the dewatering module.

[0021] A movable assembly type construction sand purification system comprises the movable assembly type construction sand purification device, and the waste material screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module are transported to a designated site by a transport tool and are sequentially connected in front and back.

[0022] Further, the number of one or more of the waste material screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module is multiple, and the one or more are repeatedly combined for use.

[0023] Further, the number of the purification module is multiple, and the discharge port of the purification pipeline of the last purification module is connected with a sand-water collection pool.

[0024] Further, the sand-water collection pool is located below the purification pipeline, and the purification pipeline and the sand-water collection pool are located in the same container.

[0025] Further, the upper part of the sand-water collection pool is an open structure; or the upper part of the sand-water collection pool is a structure that is partially open and partially closed.

[0026] Further, the sand-water separation module is provided with the dewatering module.

[0027] The present application has the following beneficial effects:

[0028] The present application is according to the different functions of the construction sand cleaning equipment to integrate each function into a module, and these modules can be made into mobile type according to the transportation permission conditions and combined for use according to the different sand cleaning process requirements. When used, the modules can be composed of waste screening module, sand water mixing and conveying module, purification module and sand water separation module or more modules, or the same module can be used repeatedly. The present application integrates various functional devices in customized or standard box body, so that each module is made into mobile assembly type, and the standard box body is like a standard container, which can be transported to the use site by car, cargo ship or other transportation tools, and can be used by unloading and hoisting without the need of setting up a plant house and occupying a small area. According to the different properties of sand, such as machine-made sand, sea sand or river sand, different combination modes can be adopted to form a purification system. When purifying machine-made sand, the corners, sharp pieces and weathered layer on the surface of the sand particles can be effectively removed, and when purifying sea sand, the chloride salt and other harmful substances of the sea sand can be effectively removed, including the film layer, and the chloride ion content reaches 0.000% to 0.002%, so that the sea sand is reduced to the state of river sand before entering the sea, and can be used safely like river sand without causing steel corrosion and concrete deterioration. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The waste screening module of the present application is shown in Fig. 1.

[0030] Figure 2 The waste screening module of the present application is shown in Fig. 1. Figure 1 The waste screening module of the present application is shown in Fig. 1.

[0031] Figure 3 The sand water mixing and conveying module of the present application is shown in Fig. 2.

[0032] Figure 4 The sand water mixing and conveying module of the present application is shown in Fig. 2. Figure 3 The sand water mixing and conveying module of the present application is shown in Fig. 2.

[0033] Figure 5 The purification module of the present application is shown in Fig. 3.

[0034] Figure 6 The purification module of the present application is shown in Fig. 3. Figure 5 The purification module of the present application is shown in Fig. 3.

[0035] Figure 7 The purification module of the present application is shown in Fig. 3.

[0036] Figure 8 The purification module of the present application is shown in Fig. 3. Figure 7 The purification module of the present application is shown in Fig. 3.

[0037] Figure 9Figure 1 is a schematic diagram of a sand-water mixture delivery module and a purification module as a same module;

[0038] Figure 10 Figure 2 is a schematic diagram of a mixing pool and a purification pipeline in the sand-water mixture delivery module and the purification module; Figure 9

[0039] Figure 11 Figure 3 is a schematic diagram of a purification pipeline in a spiral structure and a purification pipeline in a spiral structure;

[0040] Figure 12 Figure 4 is a schematic diagram of a purification module with a sand-water collection pool;

[0041] Figure 13 Figure 5 is a perspective view of a purification pipeline and a sand-water collection pool in the sand-water mixture delivery module and the purification module; Figure 12

[0042] Figure 14 Figure 6 is a side view of a purification pipeline and a sand-water collection pool in the sand-water mixture delivery module and the purification module; Figure 12

[0043] Figure 15 Figure 7 is a schematic diagram of a purification pipeline with a completely closed side surface;

[0044] Figure 16 Figure 8 is a schematic diagram of a purification pipeline with a partially open upper side surface;

[0045] Figure 17 Figure 9 is an exploded view of one installation mode of a baffle;

[0046] Figure 18 Figure 10 is an exploded view of another installation mode of a baffle;

[0047] Figure 19 Figure 11 is a schematic diagram of a sand-water separation module;

[0048] Figure 20 Figure 12 is a schematic diagram of a dehydration module;

[0049] Figure 21 Figure 13 is a schematic diagram of a movable assembly type construction sand purification system of Example 1;

[0050] Figure 22 Figure 14 is a schematic diagram of a movable assembly type construction sand purification system of Example 2;

[0051] Figure 23 Figure 15 is a schematic diagram of a movable assembly type construction sand purification system of Example 3;

[0052] Figure 24 Figure 16 is a schematic diagram of a movable assembly type construction sand purification system of Example 4;

[0053] Figure 25 Figure 17 is a schematic diagram of a movable assembly type construction sand purification system of Example 5.​​​ Detailed Implementation

[0054] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0055] Example 1:

[0056] This invention provides a mobile prefabricated construction sand purification device, such as... Figures 1-20 As shown, it includes a movable waste screening module 1, a sand-water mixing and conveying module 2, a purification module 3, and a sand-water separation module 4, wherein:

[0057] The waste screening module 1, sand-water mixing and conveying module 2, purification module 3 and sand-water separation module 4 each include their own container 5. The container 5 of each of the waste screening module 1, sand-water mixing and conveying module 2, purification module 3 and sand-water separation module 4 is respectively equipped with a waste screening machine 6, a sand-water mixing and conveying device 7, a purification pipeline 8 and a sand-water separator 9.

[0058] This invention integrates different functional equipment for cleaning construction sand into modules. These modules, in addition to their functions, can be made mobile according to transportation permits and combined for use based on the cleaning process requirements of different types of sand. In use, it can consist of a waste screening module 1, a sand-water mixing and conveying module 2, a purification module 3, and a sand-water separation module 4, or more modules, or modules of the same type can be reused. This invention integrates various functional devices into customized or standard containers, making each module a mobile assembly. The standard container, such as a standard shipping container, can be transported to the site by truck, cargo ship, or other means of transport, and can be used immediately after unloading and hoisting, eliminating the need for a factory building and minimizing floor space. Furthermore, different combination methods can be used to form a purification system depending on the properties of the sand, such as manufactured sand, sea sand, or river sand. When purifying manufactured sand, it can effectively remove the sharp edges, flaky textures, and weathered layers on the surface of the sand particles. When purifying sea sand, it can effectively remove chloride salts and other harmful substances, including the film layer, with the chloride ion content reaching 0.000% to 0.002%, restoring the sea sand to its state before entering the sea. It can be used safely like river sand and will not cause steel corrosion or concrete deterioration.

[0059] For waste screening module 1:

[0060] like Figure 1 , 2As shown, the waste screening module 1 is used for screening the raw sand. The raw sand can be loaded into the waste screening machine 6 of the waste screening module 1 by a loading mechanism such as a loader, and the large-particle solid waste is screened out by the waste screening machine 6, and then enters the next process. The next process can be set according to actual needs, which can be the sand-water mixing and conveying module 2 or other processes.

[0061] For the sand-water mixing and conveying module 2:

[0062] As shown in Figure 3 , 4 , the sand-water mixing and conveying device 7 of the sand-water mixing and conveying module 2 includes a mixing pool 10, which is provided with a feeding device 11, a sand-water stirring device 12, and a sand-water mixed flow suction pipeline 17 and a suction pump 13.

[0063] The sand of the previous process enters the mixing pool 10 through the feeding device 11 and mixes with water. Under the high-speed stirring of the sand-water stirring device 12, a suspended sand-water mixed flow is formed. The sand-water mixed flow enters the next process through the suction pipeline 17 under the positive pressure or / and negative pressure suction of the suction pump 13. The next process can be set according to actual needs, which can be the purification module 3 or other processes.

[0064] The sand-water stirring device 12 can include a stirring motor 18 and stirring blades 19. The stirring motor 18 is located above the mixing pool 10, and a stirring rod 20 is provided on the output shaft of the stirring motor 18. A plurality of stirring blades 19 are provided on the stirring rod 20, and the stirring blades 19 are located inside the mixing pool 10. The stirring blades 19 on the lower end of the stirring rod 20 are driven by the stirring motor 18 to stir the sand and water in the mixing pool 10 at high speed, forming a suspended sand-water mixed flow.

[0065] The first end of the suction pipeline 17 is inserted into the mixing pool 10, and the second end of the suction pipeline 17 is used to connect with the next process, for example, to be sealingly connected with the feeding port of the purification pipeline 8 of the purification module 3. The suction pump 13 is provided on the suction pipeline 17. The sand-water mixed flow is sucked into the suction pipeline 17 by the suction pump 13 and conveyed to the next process.

[0066] For the purification module 3:

[0067] As shown in Figures 5-18 , the purification pipeline 8 of the purification module 3 is arranged along the inner wall of the container 5 in a spiral shape, and is arranged in a spiral shape from top to bottom. The top end of the purification pipeline 8 is the feeding port, and the bottom end is the discharging port. The purification pipeline forms a spiral-shaped flow channel between the feeding port and the discharging port.

[0068] The sand-water mixture flow of the previous process enters the purification pipeline 8 from the feed port of the purification pipeline 8. Under the action of the suction pump 13 and / or gravity, the sand-water mixture flow suspended in the purification pipeline 8 flows at high speed from the feed port to the discharge port (i.e. from top to bottom), and the sand collides and rubs repeatedly between the sand, the sand and the water, and the sand and the inner wall of the purification pipeline 8. If the sand is sea sand, the harmful substance film layer on the surface of the sea sand is gradually stripped off into the water during the collision and friction, achieving the effect of completely removing the harmful substances such as chloride ions on the surface of the sea sand. If the sand is machine-made sand, the corners, needles and weathered layers (if any) on the surface of the sand particles will be broken and removed. At the same time, due to the spiral arrangement of the purification pipeline 8, the collision speed of the sand is also increased during the flow, and the direction of the sand-water mixture flow changes along the spiral purification pipeline 8, and through the relative impact of the sand and the water, the harmful substances in the fine gaps of the sand are quickly exchanged with the water outside, and the harmful substances in the fine gaps of the sand enter the water.

[0069] The sand-water mixture discharged from the discharge port enters the next process, which can be set according to actual needs, and can be other purification modules 3, sand-water separation modules 4, or other processes.

[0070] The purification pipeline 8 can be installed on the inner wall of the container 5, or can be installed by a support. As shown in Figure 9 10 The support can include a plurality of support units 21, each of which includes an inner upright column 22 and an outer upright column 23. The bottom ends of the inner upright column 22 and the outer upright column 23 are connected to the bottom surface of the container 5, and the inner upright column 22 and the outer upright column 23 are located on the inner side and the outer side of the spiral structure formed by the purification pipeline 8, respectively. The inner upright column 22 and the outer upright column 23 are connected together by a plurality of cross braces 24, and the purification pipeline 8 is installed on the cross braces 24.

[0071] The purification pipeline 8 forming the spiral structure can be entirely curved, forming a spiral structure with the whole curved, or can be partially curved and partially linear, forming a spiral structure with part of the line and part of the curve.

[0072] The sand-water mixture conveying module 2 and the purification module 3 can be the same module, at which time, as shown in Figure 9 10 The sand-water mixture conveying device 7 and the purification pipeline 8 are located in the same container, and the sand-water mixture conveying device 7 is located in the space inside the spiral structure formed by the purification pipeline 8, fully utilizing the space inside the container.

[0073] Of course, the sand-water mixture conveying module 2 and the purification module 3 can also be different modules, which are not limited by the present application.

[0074] ​​An obstructor 14 can be installed inside the purification pipe 8 to increase the impact frequency of sand and water within the pipe and to change the direction and force of the sand and water movement, thereby improving the impact and friction effect of the sand. During the flow of sand and water within the purification pipe 8, the obstructor 14 increases the impact frequency and changes the direction and force of the sand and water movement. This results in more frequent and stronger impacts and friction of the sand, which is more conducive to peeling away the harmful substance film layer on the surface of the sea sand and allowing it to enter the water. It also facilitates the entry of harmful substances from the crevices of the sea sand into the water, helps eliminate the sharp edges, needle-like structures, and weathered layers of manufactured sand, and improves roundness.

[0075] Among them, such as Figure 17 , 18 As shown, the outer casing 25 of the purification pipe 8 has two opposite side walls with barrier installation ports 26. A cover 27 is sealed to the barrier installation port 26, and a sealing gasket 28 is placed between the cover 27 and the barrier installation port 26 to prevent sand and water from leaking out of the purification pipe 8. A barrier installation limiting groove 29 is provided inside the cover 27, which can be used to insert and fix the barrier 14. The barrier 14 is fixedly installed on the barrier installation limiting groove 29. The barrier can also be open on one side, such as... Figure 18 As shown, it can be set anywhere.

[0076] The form of the disruptor 14 can be various. For example, the disruptor 14 includes multiple disruptor rods. The installation direction of the disruptor rods is perpendicular or inclined to the flow direction of the sand and water. There is a certain distance between the multiple disruptor rods. They are arranged in a crisscross pattern to form a multi-layered mesh structure in the flow direction of the sand and water. This is used to disrupt and change the movement direction of the high-speed sand and water mixture, and to increase the impact and friction between sand and sand, sand and water, sand and the inner wall of the purification pipe 8, and sand and the disruptor 14.

[0077] Multiple layers of transverse baffles can be staggered, as can multiple layers of longitudinal baffles, further enhancing the effect of obstructing and altering the direction of the sand-water mixture flow. The baffles can be ordinary steel bars, steel bars coated with wear-resistant materials, or other wear-resistant components.

[0078] For ease of maintenance, a maintenance window is provided on the container 5 of the purification module 3 at the installation location of the jammer 14.

[0079] The purification pipes 8 within the purification module 3 can form an outer spiral structure 30 and an inner spiral structure 31, such as... Figure 11 As shown, the inner spiral structure 31 is located inside the outer spiral structure 30, and the purification pipes 8 are arranged more closely, which can make full use of the space inside the container 5.

[0080] The aforementioned purification pipe 8 can be entirely a tubular structure with closed sides, such as... Figure 15As shown, the pipe section is not limited to the structure of a circle, rectangle, ellipse or upper and lower half circle intermediate flat section, and the closed purification pipe 8 is provided with a baffle 14.

[0081] Or part of the purification pipe 8 is a groove structure with an open upper side, and the other part is a tubular structure with a closed side, such as Figure 16 As shown, for example, it can be open at the straight section and closed at the curved section, and the open straight section can facilitate the placement of the baffle, and the maintenance and replacement are more convenient.

[0082] Or the entire purification pipe 8 is a groove structure with an open upper side.

[0083] For the sand-water separation module 4:

[0084] As shown in Figure 19 The sand-water separation machine 9 of the sand-water separation module 4 can be a spiral sand washer (such as Figure 19 c), a bucket wheel sand washer (such as Figure 19 a, b), etc. When the bucket wheel sand washer is used, the upper impeller part Figure 19 a) and the lower part Figure 19 b) can be transported separately according to the width and height requirements of the container 5, and then assembled at the use site.

[0085] The sand-water of the previous process enters the sand-water separation machine 9 for sand-water separation. If the previous process is the purification module 3, the sand and water are separated by the sand-water separation machine 9, so that the harmful substances stripped from the surface of the sand body by the purification module 3 are discharged with the water from the sand-water separation machine, and the harmful substances are removed. The sand discharged from the sand-water separation machine 9 can be directly sent to the finished product yard, or can be further dewatered by the next process such as the dewatering module, and finally becomes finished sand and is transported to the finished product yard.

[0086] As an improvement of the embodiment of the present application, as shown in Figure 20 It can also include a dewatering module 32, and the container 5 of the dewatering module 32 is provided with a dewatering screen 33 inside.

[0087] The sand obtained after the sand-water separation module 4 can be further dewatered by the dewatering screen 33 of the dewatering module 32 and enter the next process. The next process can be set according to actual needs, which can be a repeated purification module 3, or can be sent to the finished product yard.

[0088] Embodiment 2:

[0089] The embodiment of the present application provides a movable assembly type construction sand purification system, as shown in Figures 21-25 The movable assembly type construction sand purification device is provided, wherein:

[0090] The waste screening module 1, the sand-water mixing and conveying module 2, the purification module 3 and the sand-water separation module 4 are transported to the designated site by a transport tool and connected in sequence.

[0091] During production, the raw sand is transported to the waste screening module 1 by a loader or the like, and the large-particle solid waste is screened out by the waste screening machine 6. The sand after removing the large-particle solid waste enters the mixing pool 10 through the feeding device 11 of the sand-water mixing and conveying module 2 and is mixed with water. Under the high-speed stirring of the sand-water stirring device 12, a suspended sand-water mixed flow is formed, which enters the purification pipeline 8 of the purification module 3 through the suction pipeline 17 under the positive pressure or / and negative pressure suction of the suction pump 13. The suspended sand-water mixed flow in the purification pipeline 8 flows at high speed from the feeding port to the discharging port, and the sand and the sand, the sand and the water, and the sand and the inner wall of the purification pipeline 8 repeatedly collide and rub each other, so that the harmful substances on the sand body enter the water. Then, it enters the sand-water separation module 4, and the sand-water separation machine 9 is used for sand-water separation. The harmful substances stripped from the surface of the sand body are discharged together with the water discharged by the sand-water separation machine, and the harmful substances are removed. The sand discharged from the sand-water separation machine 9 can be sent to the finished product yard or can be sent to the finished product yard after dehydration by the dehydration module 32.

[0092] The number of one or more of the foregoing waste screening module 1, sand-water mixing and conveying module 2, purification module 3 and sand-water separation module 4 is multiple, and they are repeatedly combined for use. Specifically, the following examples are given:

[0093] Example one:

[0094] As shown in Figure 21 , one waste screening module 1, one sand-water mixing and conveying module 2, multiple purification modules 3 and one sand-water separation module 4 are composed, and the discharging port of the purification pipeline 8 of the last purification module 3 is connected with a sand-water collection pool 16. The sand-water collection pool 16 is located below the purification pipeline 8, and the purification pipeline 8 and the sand-water collection pool 16 are located in the same container 5, as shown in Figures 12-14 .

[0095] Waste screening module 1 is stacked above sand-water mixing and conveying module 2. A feed hopper is located at the front end of waste screening module 1. The screened primary finished sand enters the feeding device 11 of the sand-water mixing and conveying module 2 below, and then enters the mixing tank 10 to form a sand-water mixed flow. Under the positive pressure push or negative pressure suction of the suction pump 13, it is sent to the purification module 3 for processing. Multiple purification modules 3 are arranged horizontally. After being processed by several purification modules 3, the sand-water mixed flow enters the last purification module 3. The high-speed sand-water mixed flow discharged from the purification pipe 8 is collected by the sand-water collection tank 16 located at the bottom of the last purification module 3. The sand-water mixed flow is discharged from the outlet of the sand-water collection tank 16 and enters the sand-water separation module 4 for sand-water separation. Harmful substances separated from the sand surface are discharged along with the water. The sand-water separation module 4 uses a bucket wheel sand-water separator.

[0096] The high-speed sand-water mixture discharged from the purification pipe 8 of the last purification module 3 is collected in the sand-water collection tank 16. After the water flow rate is reduced, the sand-water mixture is discharged from the overflow outlet. This process of reducing the sand-water flow rate before discharge avoids the loss of fine sand due to excessive water flow rate and allows the sand-water separator at the rear of the module to use a sand washing machine with a lower diameter.

[0097] Sand and water collection tanks can take various forms. For example, the upper part of the sand and water collection tank can be an open structure; or, the upper part of the sand and water collection tank can be a partially open and partially closed structure; or, except for the sand and water outlet, the rest can be completely closed to reduce sand and water splashing.

[0098] Example 2:

[0099] like Figure 22 As shown, the difference between this example and Example 1 is that the multiple purification modules 3 are arranged vertically.

[0100] Example 3:

[0101] like Figure 23 As shown, the difference between this example and Example 2 is that the sand-water separation module 4 adopts a spiral sand washing machine, and a dewatering module 32 is set after the sand-water separation device 4.

[0102] Example 4:

[0103] like Figure 24 As shown in this example, the waste screening module 1 is connected to the sand-water separation module 4 at the rear end. After pretreatment by the sand-water separation module 4, it enters the standard process. The standard process includes a sand-water mixing and conveying module 2, multiple vertically arranged purification modules 3, and a sand-water separation module 4. The standard process consists of one or more sets. After several combined purification treatments by this process, the finished product is sent out.

[0104] Example 5:

[0105] like Figure 25As shown, unlike the closed purification pipeline 8 in the above examples 1 to 4, the purification pipeline 8 in the present example is open, i.e. the straight section is open and the curved section is closed. In the present example, the waste screening module 1 is stacked above the sand-water mixture conveying module 2, and the purification module 3 is arranged in several layers of stacking. The number of stacked layers is different from that in examples 1 to 4, and the stacking is more and the height is higher. The sand-water mixture is pumped to a high point by the sand pumping pump in the sand-water mixture conveying module 2, and then flows down layer by layer. The sand-water mixture flow discharged from the bottommost purification module 3 enters the sand-water separation module 4 for sand-water separation, and the harmful substances separated from the surface of the sand body are discharged together with the water.

[0106] The above is the preferred embodiment of the present application. It should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A mobile, fabricated, construction sand purification device, characterized by, The device comprises a movable waste screening module, a sand-water mixing and conveying module, a purification module and a sand-water separation module, wherein: The waste screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module each comprise a respective container, and the waste screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module each comprise a waste screening machine, a sand-water mixing and conveying device, a purification pipeline and a sand-water separation machine respectively arranged in the respective container; The purification pipeline is arranged in a spiral shape from top to bottom, and the top end of the purification pipeline is an inlet, and the bottom end is an outlet, and the purification pipeline forms a spiral-shaped flow channel between the inlet and the outlet; The purification pipeline is provided with a baffle for increasing the impact frequency of sand and water in the purification pipeline and changing the movement direction and intensity of sand and water; The baffle comprises a plurality of baffle rods, the installation direction of the baffle rods is perpendicular or inclined to the flow direction of sand and water, the plurality of baffle rods are arranged with a certain spacing and staggered in the longitudinal and transverse directions, and form a multi-layer mesh structure in the flow direction of sand and water, for blocking and changing the movement direction of high-speed flow of sand and water mixture, and increasing the impact and friction between sand and sand, sand and water, sand and the inner wall of the purification pipeline, and sand and the baffle; The plurality of transverse baffle rods are distributed in a staggered manner, and the plurality of longitudinal baffle rods are distributed in a staggered manner.

2. The mobile, fabricated, construction sand purification device of claim 1, wherein, The sand-water mixing and conveying device comprises a mixing pool, and the mixing pool is provided with an inlet device, a sand-water mixing device, a sand-water mixture suction pipeline and a suction pump.

3. The mobile, fabricated, construction sand purification device of claim 2, wherein, The sand-water mixing and conveying module and the purification module are the same module, the sand-water mixing and conveying device and the purification pipeline are located in the same container, and the sand-water mixing and conveying device is located inside the spiral structure formed by the purification pipeline.

4. The mobile, fabricated, construction sand purification device of claim 2, wherein, The sand-water mixing and conveying module and the purification module are different modules.

5. The mobile, fabricated, construction sand purification device of claim 4, wherein, The container of the purification module is provided with an inspection window.

6. The mobile, fabricated, construction sand purification device of claim 1, wherein, The purification pipeline forms an outer spiral structure and an inner spiral structure, and the inner spiral structure is located inside the outer spiral structure.

7. The mobile, fabricated, construction sand purification device of claim 1, wherein, The purification pipeline is in the form of a tubular structure with a closed side surface, or a part of the purification pipeline is in the form of a groove structure with an open upper side surface, and the other part is in the form of a tubular structure with a closed side surface, or the purification pipeline is in the form of a groove structure with an open upper side surface.

8. The mobile, fabricated, construction sand purification device of claim 1, wherein, The sand-water separation machine is a spiral sand washer or a bucket wheel sand washer.

9. The mobile, fabricated, construction sand purification device of any of claims 1-8, wherein, The device further comprises a dewatering module, the dewatering module comprises a container, and the container of the dewatering module is provided with a dewatering screen.

10. A mobile, fabricated, construction sand purification system, characterized by, The device further comprises a dewatering module, the dewatering module comprises a container, and the container of the dewatering module is provided with a dewatering screen.

11. The mobile, fabricated, construction sand purification system of claim 10, wherein, The device comprises a movable waste screening module, a sand-water mixing and conveying module, a purification module and a sand-water separation module, wherein:

12. The mobile, fabricated, construction sand purification system of claim 11, wherein, The waste screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module each comprise a respective container, and the waste screening module, the sand-water mixing and conveying module, the purification module and the sand-water separation module each comprise a waste screening machine, a sand-water mixing and conveying device, a purification pipeline and a sand-water separation machine respectively arranged in the respective container; 13. The mobile, fabricated, construction sand purification system of claim 12, wherein, The purification pipeline is arranged in a spiral shape from top to bottom, and the top end of the purification pipeline is an inlet, and the bottom end is an outlet, and the purification pipeline forms a spiral-shaped flow channel between the inlet and the outlet; The purification pipeline is provided with a baffle for increasing the impact frequency of sand and water in the purification pipeline and changing the movement direction and intensity of sand and water; The baffle comprises a plurality of baffle rods, the installation direction of the baffle rods is perpendicular or inclined to the flow direction of sand and water, the plurality of baffle rods are arranged with a certain spacing and staggered in the longitudinal and transverse directions, and form a multi-layer mesh structure in the flow direction of sand and water, for blocking and changing the movement direction of high-speed flow of sand and water mixture, and increasing the impact and friction between sand and sand, sand and water, sand and the inner wall of the purification pipeline, and sand and the baffle; The plurality of transverse baffle rods are distributed in a staggered manner, and the plurality of longitudinal baffle rods are distributed in a staggered manner. The sand-water mixing and conveying device comprises a mixing pool, and the mixing pool is provided with an inlet device, a sand-water mixing device, a sand-water mixture suction pipeline and a suction pump. The sand-water mixing and conveying module and the purification module are the same module, the sand-water mixing and conveying device and the purification pipeline are located in the same container, and the sand-water mixing and conveying device is located inside the spiral structure formed by the purification pipeline. The sand-water mixing and conveying module and the purification module are different modules. The container of the purification module is provided with an inspection window. The purification pipeline forms an outer spiral structure and an inner spiral structure, and the inner spiral structure is located inside the outer spiral structure. The purification pipeline is in the form of a tubular structure with a closed side surface, or a part of the purification pipeline is in the form of a groove structure with an open upper side surface, and the other part is in the form of a tubular structure with a closed side surface, or the purification pipeline is in the form of a groove structure with an open upper side surface. The sand-water separation machine is a spiral sand washer or a bucket wheel sand washer. The device further comprises a dewatering module, the dewatering module comprises a container, and the container of the dewatering module is provided with a dewatering screen. The device further comprises a dewatering module, the dewatering module comprises a container, and the container of the dewatering module is provided with a dewatering screen.

14. The mobile, fabricated, construction sand purification system of claim 12, wherein, The upper part of the sand water collecting pool is an open structure; or the upper part of the sand water collecting pool is a structure of partially open and partially closed.

15. The mobile, fabricated, construction sand purification system of any of claims 10-14, wherein, The sand water separation module is provided with a dehydration module.

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