CN107971129B - Construction waste treatment system - Google Patents

Abstract

The present invention provides a construction waste treatment system, including a coarse sand system, a fine sand system, a mud system and a water circulation system, wherein the coarse sand system is connected to the fine sand system, the fine sand system is connected to the mud system, the water circulation system supplies water to the coarse sand system, the fine sand system and the mud system respectively, the coarse sand system is fed, the mud generated in the process of making coarse sand enters the fine sand system, the mud generated in the process of making fine sand by the fine sand system enters the mud treatment system, and the water generated in the process of making mud cake by the mud treatment system enters the water circulation system. By setting the coarse sand system, the fine sand system, the mud system and the water circulation system, and organically combining the various systems, coarse sand, fine sand and mud can be separated, and water recycling can be realized, so that construction waste is effectively recycled, water resources can be saved, and energy conservation and environmental protection can be achieved.

Description

Construction waste treatment system

Technical Field

The invention belongs to the technical field of garbage disposal, and in particular relates to a construction garbage disposal system.

Background technique

Construction waste refers to the slag, abandoned soil, abandoned materials, silt and other waste generated during the construction, laying, demolition and repair of various buildings, structures, pipelines, etc. by construction units or individuals.

The current treatment method for construction waste is mainly to use sorting, crushing and other technologies for limited recycling. The recycled construction waste contains complex components and cannot be used as the main material for new projects. It can only be used as auxiliary material. The amount of construction waste digested is small, and there is serious water waste in the treatment process, which generates serious pollution and is not energy-saving or environmentally friendly.

Therefore, there is an urgent need for a construction waste treatment system that can solve the above technical problems.

Summary of the invention

The purpose of the present invention is to provide a construction waste treatment system, which can effectively recycle construction waste, separate coarse sand, fine sand and mud in the construction waste, save water resources, and be energy-saving and environmentally friendly.

To achieve the purpose of the present invention, the present invention provides the following technical solutions:

The present invention provides a construction waste treatment system, comprising a coarse sand system, a fine sand system, a mud system and a water circulation system, wherein the coarse sand system is connected to the fine sand system, the fine sand system is connected to the mud system, the water circulation system supplies water to the coarse sand system, the fine sand system and the mud system respectively, the coarse sand system is fed, the mud generated in the process of making coarse sand enters the fine sand system, the mud generated in the process of making fine sand by the fine sand system enters the mud treatment system, and the water generated in the process of making mud cake by the mud treatment system enters the water circulation system.

The coarse sand system includes a feeder, a waste separator, a first sand bailer, a crusher, a second sand bailer, a sand screen, a sand washer and a coarse sand dewatering machine arranged in sequence, wherein a first water tank is provided at the outlet of the waste separator, and a second water tank is provided at the outlet of the crusher. The first sand bailer bailes the sand and gravel separated by the waste separator from the first water tank and sends them to the crusher, and the second sand bailer bailes the sand and gravel crushed by the crusher from the second water tank and puts them into the sand screen. The coarse sand dewatering machine is connected to a first conveyor belt, which is arranged on a bracket and movably arranged on the bracket.

Among them, one end of the first sand bailer is arranged in the first water pool, and the other end of the first sand bailer is raised, so that the first sand bailer has a structure that gradually rises from the waste separator to the crusher; one end of the second sand bailer is arranged in the second water pool, and the other end of the second sand bailer is raised, so that the second sand bailer has a structure that gradually rises from the crusher to the sand screening machine; a second conveyor belt is also connected between the sand screening machine and the crusher, and the second conveyor belt conveys large particles of sand and gravel produced after screening by the sand screening machine to the crusher for secondary crushing.

Wherein, the waste separator is connected to a third conveyor belt, and the waste generated by separating sand and gravel by the waste separator is transported away by the third conveyor belt.

Among them, the fine sand system includes a third water pool, a fourth water pool, a fifth water pool, a sixth water pool, a fourth conveyor belt, a fine sand dewatering machine, a fifth conveyor belt, a first cyclone separator and a second cyclone separator. A first water channel is connected between the third water pool and the first water pool, a second water channel is connected between the fourth water pool and the second water pool, and a third water channel is connected between the fifth water pool and the sand washing machine. The third water pool is provided with a first mud pump, and the first mud pump transports the mud in the third water pool to the first cyclone separator. The fine sand separated by the first cyclone separator is transported to the sixth water pool via the fourth conveyor belt. The sixth water pool is provided with a second mud pump, and the second mud pump transports the mud in the sixth water pool to the second cyclone separator. The fine sand separated by the second cyclone separator is dehydrated by the fine sand dewatering machine and then transported away by the fifth conveyor belt connected to the fine sand dewatering machine.

Among them, the fine sand system also includes a third cyclone separator and a fourth cyclone separator. The fourth water tank is provided with a third mud pump, and the third mud pump transports the mud in the fourth water tank to the third cyclone separator. The fifth water tank is provided with a fourth mud pump, and the fourth mud pump transports the mud in the fifth water tank to the fourth cyclone separator. The fine sand separated by the third cyclone separator and the fourth cyclone separator is transported to the sixth water tank via the fourth conveyor belt.

Wherein, the first water channel is provided with a screening device for scooping up debris in the first water channel.

Among them, the mud system includes a first environmental protection barrel, a first slurry pump and multiple filter presses. A first mud delivery pipe is connected between the first cyclone separator and the first environmental protection barrel. The mud separated by the first cyclone separator is transported to the first environmental protection barrel for sedimentation through the first mud delivery pipe. The mud precipitated at the bottom of the first environmental protection barrel is transported to the filter press through the first slurry pump. The filter press squeezes the mud to obtain a mud cake and separates the water in the mud.

Among them, the mud system also includes a second environmental protection barrel, a third environmental protection barrel, a second slurry pump, and a third slurry pump. A second mud delivery pipe is connected between the third cyclone separator and the second environmental protection barrel. The mud separated by the third cyclone separator is transported to the second environmental protection barrel for sedimentation through the second mud delivery pipe, and the mud precipitated at the bottom of the second environmental protection barrel is transported to the filter press through the second slurry pump. A third mud delivery pipe is connected between the fourth cyclone separator and the third environmental protection barrel. The mud separated by the fourth cyclone separator is transported to the third environmental protection barrel for sedimentation through the third mud delivery pipe. A fourth mud delivery pipe is connected between the second cyclone separator and the third environmental protection barrel. The mud separated by the second cyclone separator is transported to the third environmental protection barrel for sedimentation through the fourth mud delivery pipe, and the mud precipitated at the bottom of the third environmental protection barrel is transported to the filter press through the third slurry pump. The filter press squeezes the mud to obtain a mud cake and separates water from the mud.

Wherein, the water circulation system includes a clear water tank, and the clear water tank is provided with pipes respectively connected to the first water tank, the second water tank, the third water tank, the fourth water tank, the fifth water tank, the sixth water tank, the first environmental protection barrel, the second environmental protection barrel, the third environmental protection barrel and the multiple filter presses. The water separated by the multiple filter presses flows into the clear water tank through the pipes, and the clear water tank supplies water to the first water tank, the second water tank, the third water tank, the fourth water tank, the fifth water tank, the sixth water tank, the first environmental protection barrel, the second environmental protection barrel and the third environmental protection barrel respectively.

Beneficial effects of the present invention:

The construction waste treatment system provided by the present invention can separate coarse sand, fine sand and mud, and realize the recycling of water by setting up a coarse sand system, a fine sand system, a mud system and a water circulation system, and organically combining each system, so as to effectively recycle construction waste, save water resources, and be energy-saving and environmentally friendly.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a construction waste treatment system according to an embodiment of the present invention;

FIG2 is a schematic diagram of the water circulation system structure in FIG1;

FIG3 is a schematic structural diagram of the first cyclone separator in FIG1 ;

FIG4a is a schematic structural diagram of a feeder in one embodiment;

FIG4b is a schematic diagram of the left structural view of the feeder in FIG4a;

FIG5a is a schematic structural diagram of a waste separator provided by an embodiment of the present invention;

FIG5b is a schematic structural diagram of a waste separator provided by an embodiment of the present invention from another perspective;

FIG5c is a schematic structural diagram of a first cylinder of a waste separator provided by an embodiment of the present invention;

FIG5d is a schematic structural diagram of a screen member of a waste separator provided by an embodiment of the present invention;

FIG6a is a schematic structural diagram of a sand dredging machine provided by an embodiment of the present invention;

FIG6 b is a schematic structural diagram of a tipping bucket of a sand dredging machine provided in an embodiment of the present invention;

FIG7a is a schematic structural diagram of a sand screening machine provided by an embodiment of the present invention;

FIG7b is a schematic structural diagram of a first cylinder of a sand screening machine provided by an embodiment of the present invention;

FIG7c is a schematic structural diagram of a second cylinder of a sand screening machine provided by an embodiment of the present invention;

FIG8a is a schematic diagram of a three-dimensional structure of a sand washing machine according to an embodiment of the present invention;

FIG8b is a schematic diagram of the cross-sectional structure of the rotor of the sand washing machine in FIG8a;

FIG8c is a schematic diagram of the screen plate structure of the sand washing machine in FIG8a;

FIG8d is a schematic diagram of the flat plate structure of the sand washing machine in FIG8a;

FIG8e is a schematic diagram of the sand washing machine of FIG8a in use;

FIG9a is a schematic diagram of the three-dimensional structure of a vibrating dewatering screen according to an embodiment of the present invention;

FIG9b is a schematic diagram of the structure of the vibrating dewatering screen in FIG9a from the right side;

FIG9c is a partial enlarged structural schematic diagram of the screen surface of the vibrating dewatering screen in FIG9a;

FIG10a is a schematic structural diagram of a mud separation device provided in an embodiment of the present invention;

FIG10 b is a cross-sectional schematic diagram of a mud separation device provided by an embodiment of the present invention;

FIG. 10c is a top view of the mud separation device provided in an embodiment of the present invention.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 and 2. A preferred embodiment of the present invention provides a construction waste treatment system, including a coarse sand system 100, a fine sand system 200, a mud system 300 and a water circulation system 400. The coarse sand system 100 is connected to the fine sand system 200, and the fine sand system 200 is connected to the mud system 300. The water circulation system 40 supplies water to the coarse sand system 100, the fine sand system 200 and the mud system 300 respectively. The coarse sand system 100 is fed, and the mud generated in the process of making coarse sand enters the fine sand system 200. The mud generated in the process of making fine sand by the fine sand system 200 enters the mud treatment system 300. The water generated in the process of making mud cake by the mud treatment system 300 enters the water circulation system 400.

In this embodiment, by setting up a coarse sand system 100, a fine sand system 200, a mud system 300 and a water circulation system 400, and organically combining each system, coarse sand, fine sand and mud can be separated, and water can be recycled, thereby effectively recycling construction waste, saving water resources, and being energy-saving and environmentally friendly.

In this embodiment, the size range of coarse sand and fine sand can be adjusted according to market demand. Generally speaking, the size range of the coarse sand is 0.5 mm to 8 mm, and the size range of the fine sand is 0.075 mm to 0.5 mm. Coarse sand can be used to make concrete, fine sand can be used for plastering and grouting, and mud can be used to make bricks.

Furthermore, the coarse sand system 100 includes a feeder 101, a waste separator 102, a first sand bailer 106, a crusher 107, a second sand bailer 109, a sand screen 110, a sand washer 112 and a coarse sand dewatering machine 113 arranged in sequence, wherein a first water tank 105 is provided at the outlet of the waste separator 101, a second water tank 108 is provided at the outlet of the crusher 107, the first sand bailer 106 bailes the sand and gravel separated by the waste separator 102 from the first water tank 105 and sends it to the crusher 107, the second sand bailer 109 bailes the sand and gravel crushed by the crusher 107 from the second water tank 108 into the sand screen 110, and the coarse sand dewatering machine 113 is connected to a first conveyor belt (not shown in the figure), the first conveyor belt is provided on a bracket 115, and the first conveyor belt can be movably provided on the bracket 115.

Among them, a sixth conveyor belt 114 can also be set between the support 115 and the coarse sand dehydrator 113, and the coarse sand dehydrated by the coarse sand dehydrator 113 can be transported to the first conveyor belt on the support 115 through the sixth conveyor belt 114, so as to adjust the setting position of the first conveyor belt, which is more convenient for installing the equipment according to the geographical terrain. The support 115 is also provided with a sub-support 116 that can be slidably set relative to the support 115, and the first conveyor belt is also partially set on the sub-support 116. The unloading position of the coarse sand is changed by sliding the sub-support 116, so that the coarse sand can be unloaded in the coarse sand unloading area 117. The support 115 can be supported by the pillar 118 at a position higher than the ground, so that the coarse sand can be directly picked up by a truck under the support 116 in the coarse sand unloading area 117, which can save the step of loading the coarse sand onto the truck, thereby improving efficiency.

Furthermore, one end of the first sand bailer 106 is arranged in the first water pool 105, and the other end of the first sand bailer 106 is raised, so that the first sand bailer 106 is gradually raised from the waste separator 102 to the crusher 107. One end of the second sand bailer 109 is arranged in the second water pool 108, and the other end of the second sand bailer 109 is raised, so that the second sand bailer 109 is gradually raised from the crusher 107 to the sand screening machine 110. A second conveyor belt 111 is also connected between the sand screening machine 110 and the crusher 203. The second conveyor belt 111 conveys large particles of sand and gravel produced after screening by the sand screening machine 110 to the crusher 107 for secondary crushing.

The first sand dredger 106 is provided to dredge sand from the first water pool 105 so as to preliminarily wash the sand and gravel separated from the waste separator 102, and some mud and fine sand can be washed out. The dredged sand and gravel are crushed by the crusher 107, and the large-sized sand and gravel are crushed into small-sized sand and gravel. The sand and gravel are screened by the screen in the crusher 107 to obtain sand and gravel with a size smaller than the size of the screen of the crusher 107, and are sent to the second water pool 108 for washing, and some mud and fine sand are further washed out. The sand and gravel dredged from the second water pool 108 by the second sand dredger 109 are screened by the sand screen 110 to obtain sand and gravel with a size smaller than the size of the screen of the sand screen 110. The sand and gravel with a size larger than the size of the screen of the sand screen 110 are conveyed to the crusher 107 through the second conveyor belt 111 to be crushed again until the size is smaller than the size of the screen of the sand screen 110. The sand screening machine 110 transports sand and gravel into the sand washing machine 112. Water flows through the sand washing machine 112. The rotation of the impeller drives the sand and gravel in the sand washing machine 112 to be fully mixed with water. The friction between the sand and gravel themselves and the sand washing machine 112 makes the mud and fine sand suspended in the water, while the coarse sand is brought to the coarse sand dewatering machine 113 by the impeller. The sand washing machine 112 can include multiple sand washing machines connected in series to speed up the sand washing efficiency.

Furthermore, the waste separator 102 is connected to a third conveyor belt 103, and the waste generated by the waste separator 102 separating the sand and gravel is transported away by the third conveyor belt 103. Generally speaking, the waste includes large-sized steel bars, wooden boards and other construction waste that cannot pass through the screen in the waste separator 102. The waste transported by the third conveyor belt 103 is stored in the waste storage area 104, and of course, the waste can also be recycled in other ways to make full use of resources.

Further, please refer to Figures 1 and 3 together. The fine sand system 200 includes a third water pool 203, a fourth water pool 207, a fifth water pool 210, a sixth water pool 212, a fourth conveyor belt 205, a fine sand dewatering machine 214, a fifth conveyor belt 215, a first cyclone separator 204 and a second cyclone separator 213. The third water pool 203 is connected to the first water pool 105 with a first water channel 201, the fourth water pool 207 is connected to the second water pool 108 with a second water channel 206, the fifth water pool 210 is connected to the sand washing machine 112 with a third water channel 209, and the third water pool 203 is connected to the first water pool 105 with a first water channel 201. There is a first mud pump 2041, which transports the mud in the third water tank 203 to the first cyclone separator 204. The fine sand separated by the first cyclone separator 204 is transported to the sixth water tank 212 via the fourth conveyor belt 205. The sixth water tank 212 is provided with a second mud pump (not numbered in the figure), which transports the mud in the sixth water tank 212 to the second cyclone separator 213. The fine sand separated by the second cyclone separator 213 is dehydrated by the fine sand dewatering machine 214 and then transported away by the fifth conveyor belt 215 connected to the fine sand dewatering machine 214.

The first water channel 201, the second water channel 206 and the third water channel 209 may also be in the form of pipes. An opening (not shown in the figure) is provided on the upper side of the first water pool 105 and connected to the first water channel 201, so that the mud suspension in the first water pool 105 flows into the first water channel 201 through the opening. An opening (not shown in the figure) is provided on the upper side of the second water pool 108 and connected to the second water channel 206, so that the mud suspension in the second water pool 108 flows into the second water channel 206 through the opening. An opening (not shown in the figure) is provided on the upper side wall of the sand washing pool of the sand washer 112 and connected to the third water channel 209, so that the mud suspension in the sand washing pool of the sand washer 112 flows into the third water channel 209 through the opening. By providing openings on the upper sides of the first water channel 201 and the second water channel 206 and on the upper side wall of the sand washing pool of the sand washer 112, it is prevented that the sand and stones that sink to the bottom of the pool flow out, and the separation of coarse sand and fine sand is ensured.

Among them, multiple sand washers 112 can be set, and the multiple sand washers 112 are connected in sequence. A water trough or pipe can be set between the outlets on the sand washing pools of the multiple sand washers 112 to connect with each other, and an opening is opened on the water trough or water pipe to connect with the third water channel 209. The third water channel 209 can be set to multiple to speed up the speed of conveying mud.

Please refer to Figure 3, which is a structural diagram of a preferred embodiment of the first cyclone separator 204. It can be understood that the structures of other cyclone separators in this system can also refer to the first cyclone separator. The cyclone separator, also known as a hydrocyclone, is a device that uses the principle of centrifugal sedimentation to separate solid particles from suspended matter. The main body of the device is composed of a cylinder and a cone. The cone is closer to the bottom than the cylinder. The cylinder part is shorter and the side wall of the cylinder part has a suspended matter inlet. The top of the cylinder part has a liquid outlet. The separated liquid part comes out from the liquid outlet at the top of the cylinder. The cone part is longer and gradually shrinks from the cylinder to the cone outlet part, and the separated solid particles come out from the opening at the shrinkage. The cyclone separators in this system are arranged in two side by side, and the tops 2047 and 2048 are connected by a pipe 2049. An opening is provided on the pipe 2049 to connect to the first mud pipe 301. The mud suspension extracted from the third water pool 203 by the first mud pump 2041 is divided into the first path 2043 and the second path 2044 through the inlet pipe 2042 and enters the two cylinders respectively along the tangential direction. The mud suspension moves downward in the cyclone separator in a spiral shape, and the solid particles are thrown to the wall of the device under the action of inertial centrifugal force, and fall to the outlets 2045 and 2046 at the bottom of the cone with the downward cyclone. The clear liquid or the liquid containing fine particles becomes the rising inner cyclone and is discharged from the pipe at the top center, which is called overflow. In the cyclone separator, the rapid movement of solid particles along the wall will cause serious wear of the separator. In order to extend the service life, wear-resistant materials are used for manufacturing or lining.

The fine sand separated in the second cyclone separator 213 enters the fine sand dewatering machine 214, and the fine sand dewatered by the sand washing and dewatering machine 214 is transported to the fine sand storage area 216 by the fifth conveyor belt 215. The fine sand storage area 216 is arranged away from the coarse sand storage area 117, so that the coarse sand and the fine sand are stored separately.

Furthermore, the fine sand system 200 also includes a third cyclone separator 208 and a fourth cyclone separator 211. The fourth water tank 207 is provided with a third mud pump (not numbered in the figure), and the third mud pump transports the mud in the fourth water tank 207 to the third cyclone separator 208. The fifth water tank 210 is provided with a fourth mud pump (not numbered in the figure), and the fourth mud pump transports the mud in the fifth water tank 210 to the fourth cyclone separator 211. The fine sand separated by the third cyclone separator 208 and the fourth cyclone separator 211 is transported to the sixth water tank 212 via the fourth conveyor belt 205.

Among them, the first cyclone separator 204, the third cyclone separator 208 and the fourth cyclone separator 211 are arranged in a straight line in this system, and the fourth conveyor belt 205 is arranged at the outlet position of the first cyclone separator 204, the third cyclone separator 208 and the fourth cyclone separator 211, and the fourth conveyor belt 205 can be assumed to be on the bracket.

Furthermore, the first water channel 201 is provided with a screening device 202 for picking up debris in the first water channel 201. The debris mainly includes plastics, plant stems and leaves, etc. These debris are processed in other ways after being recovered to avoid polluting the environment. The screening device 202 includes a grille net. Furthermore, the grille net can be an annular structure connected end to end and arranged on a bracket. The grille net can also be provided with a hook-shaped protrusion. A driving device is arranged on the bracket to connect with the grille net, so that the grille net and the hook-shaped protrusion make an up and down loop motion on the first water channel 201, and the debris in the first water channel 201 is hooked up by the hook-shaped protrusion. The grille net has a gap to allow water and mud smaller than the gap to pass through, thereby completing the separation of debris.

Furthermore, the mud system 300 includes a first environmental protection barrel 302, a first slurry pump 304 and multiple filter presses 309. A first mud pipe 301 is connected between the first cyclone separator 204 and the first environmental protection barrel 302. The mud separated by the first cyclone separator 204 is transported to the first environmental protection barrel 302 for sedimentation through the first mud pipe 301. The mud precipitated at the bottom of the first environmental protection barrel 302 is transported to the filter press 309 through the first slurry pump 304. The filter press 309 squeezes the mud to obtain a mud cake and separates the water in the mud.

The first slurry pump 304 is connected to the first environmental protection barrel 302 through a pipeline 303, which is arranged at the bottom of the outer wall of the first environmental protection barrel 302 and connected to the interior of the first environmental protection barrel 302. The outlet of the first slurry pump 304 is connected to a pipeline 305, and the pipeline 305 is connected to the filter press 309. In order to reasonably control the working conditions of the system, the output flow of the first slurry pump 304 is adjustable, and the adjustment method can be achieved by using a PLC controller and a frequency converter to control the power of a motor (not shown in the figure) connected to the first slurry pump 304, so that the impeller speed inside the first slurry pump 304 changes, so that the amount of mud pushed by the impeller changes.

Furthermore, the mud system 300 also includes a second environmental protection barrel 307, a third environmental protection barrel 312, a second slurry pump 309, and a third slurry pump 314. A second mud delivery pipe 306 is connected between the third cyclone separator 208 and the second environmental protection barrel 307. The mud separated by the third cyclone separator 208 is transported to the second environmental protection barrel 307 through the second mud delivery pipe 306 for sedimentation. The mud precipitated at the bottom of the second environmental protection barrel 307 is transported to the filter press 319 through the second slurry pump 309. A third mud delivery pipe 306 is connected between the fourth cyclone separator 211 and the third environmental protection barrel 312. Pipe 311, the mud separated by the fourth cyclone separator 211 is transported to the third environmental protection barrel 312 for sedimentation via the third mud transport pipe 311, a fourth mud transport pipe 316 is connected between the second cyclone separator 213 and the third environmental protection barrel 312, the mud separated by the second cyclone separator 213 is transported to the third environmental protection barrel 312 for sedimentation via the fourth mud transport pipe 316, the mud precipitated at the bottom of the third environmental protection barrel 312 is transported to the filter press 319 via the third slurry pump 314, the filter press 319 squeezes the mud to obtain a mud cake, and separates the water in the mud.

The second slurry pump 309 is connected to the second environmental protection barrel 307 through a pipeline 308, which is arranged at the bottom of the outer wall of the second environmental protection barrel 307 and connected to the inside of the second environmental protection barrel 307. The outlet of the second slurry pump 309 is connected to a pipeline 310, which is connected to the filter press 309. In order to reasonably control the working conditions of the system, the output flow of the second slurry pump 309 is adjustable. The adjustment method can be achieved by using a PLC controller and a frequency converter to control the power of a motor (not shown in the figure) connected to the second slurry pump 309, so that the impeller speed inside the second slurry pump 309 changes, so that the amount of mud pushed by the impeller changes. The third slurry pump 314 is connected to the third environmental protection barrel 312 through a pipeline 313, which is arranged at the bottom of the outer wall of the third environmental protection barrel 312 and connected to the inside of the third environmental protection barrel 312. The outlet of the third slurry pump 314 is connected to a pipeline 315, which is connected to the filter press 309. Among them, in order to reasonably control the working condition of the system, the output flow of the first slurry pump 302 is adjustable. The adjustment method can use a PLC controller and a frequency converter to control the power of a motor (not shown in the figure) connected to the third slurry pump 314, so that the impeller speed inside the third slurry pump 314 changes, and the amount of mud pushed by the impeller changes.

The filter press 319 can be arranged in the plant 318, which is a two-story structure. The filter press 319 is arranged on the second floor, and the first floor is provided with a mud cake storage area 320. During the operation of the filter press 319, the pressed mud cake falls off from the filter press 319 to the mud cake storage area 320, and the squeezed water is transported to the clean water tank 401 through another pipeline. The plant is also provided with necessary auxiliary equipment or devices such as stairs 317.

Further, please refer to Figures 1 and 2, the water circulation system 400 includes a clear water tank 401, and the clear water tank 401 is provided with pipes respectively connected to the first water tank 105, the second water tank 108, the third water tank 203, the fourth water tank 207, the fifth water tank 210, the sixth water tank 212, the first environmental protection barrel 302, the second environmental protection barrel 307, the third environmental protection barrel 312 and the multiple filter presses 319, the water separated by the multiple filter presses 319 flows into the clear water tank 401 through the pipes, and the clear water tank 401 supplies water to the first water tank 105, the second water tank 108, the third water tank 203, the fourth water tank 207, the fifth water tank 210, the sixth water tank 212, the first environmental protection barrel 302 and the second environmental protection barrel 307 respectively.

There may be multiple clean water tanks 401 , and the multiple clean water tanks 401 may be interconnected.

The water flows in the following directions: the first, second and third waterways are led out of the clean water tank 401. After the first waterway is led out of the clean water tank 401, it is transported to the first water tank 105, the second water tank 108 and the sand washing machine 112 respectively; after the second waterway is led out of the clean water tank 401, it is transported to the third water tank 203, the fourth water tank 207, the fifth water tank 210 and the sixth water tank 212 respectively; after the third waterway is led out of the clean water tank, it is transported to the first environmental protection barrel 302, the second environmental protection barrel 307 and the third environmental protection barrel 312 respectively; part of the water-containing mud after sand washing in the first water tank 105 flows into the third water tank 203 through the first water channel 201, and the first water tank 105 flows into the third water tank 203 through the first water channel 201. Some of the water-containing sand and gravel in the second water tank 108 enter the second water tank 108; some of the water-containing slurry after sand washing in the second water tank 108 enters the fourth water tank 207 through the second water channel 206, and some of the water-containing sand and gravel in the second water tank 108 enters the sand washer 112; the mud after sand washing in the sand washer 112 enters the fifth water tank 210 through the third water channel 209, and some of the water-containing sand and gravel in the sand washer 112 enters the coarse sand dewatering machine 112; the coarse sand dewatering machine 112 is also provided with a pipeline to transport the dehydrated water to the fifth water tank 210; the mud in the third water tank 203 is separated into water-containing slurry by the first cyclone separator 204 and transported to the sixth water tank 212 via the fourth conveyor belt 205 The mud in the fourth water pool 207 is separated into water-containing fine sand which is transported to the sixth water pool 212 via the fourth conveyor belt 205 and mud which is transported to the second environmental protection bucket 307 via the second mud conveying pipe 306 by the third cyclone separator 208; the mud in the fifth water pool 210 is separated into water-containing fine sand which is transported to the sixth water pool 212 via the fourth conveyor belt 205 and mud which is transported to the third environmental protection bucket 312 via the third mud conveying pipe 311 by the fourth cyclone separator 211; the mud in the sixth water pool 203 is separated into water-containing fine sand which enters the fine sand dehydrator 214 by the second cyclone separator 213. The sand and the mud are transported to the third environmental protection barrel 312 through the fourth mud pipe 316; the fine sand dewatering machine 214 is also provided with a pipeline to transport the dehydrated water to the sixth water pool 212; the water-containing slurry precipitated in the first environmental protection barrel 302 is transported to the filter press 319 through the first slurry pump 304; the water-containing slurry precipitated in the second environmental protection barrel 307 is transported to the filter press 319 through the second slurry pump 309; the water-containing slurry precipitated in the third environmental protection barrel 313 is transported to the filter press 319 through the third slurry pump 314; the water separated after the multiple filter presses 319 squeeze the mud flows into the clear water pool 401 through the pipeline, from then on, the water recycling is completed, which can reduce the waste of water resources.

Below, preferred embodiments of the main equipment in this system are given.

1. Feeder 101

Please refer to FIG. 4a to FIG. 4b , the feeder 101 includes a container 1011 formed by steel plates, wherein the top and bottom surfaces of the container 1011 are open, a conveyor belt 1012 is connected to the bottom surface of the container 1011, and the extension length of the conveyor belt 1012 exceeds the length of the container 1011 and extends a distance in the length direction of the container 1011, and the extension width of the conveyor belt 1012 exceeds the width of the container 1011 and extends a distance in the width direction of the container 1011. The bottom surface of the container 1011 is in close contact with the conveyor belt 1012, and a slit 1013 is provided on a side plate at one end of the bottom of the container 1011 near the conveyor belt 1012 in the length direction.

Specifically, the top opening of the container 1011 is larger than the bottom opening, and the cross-section in the length direction is an inverted trapezoid. Of course, the cross-section in the width direction can also be an inverted trapezoid, so that the material fed into the container 1011 can be gathered to the bottom opening area by gravity. The large top opening also facilitates feeding. The size of the slit 1013 opened in the container 1011 can be set to be adjustable to meet the feeding requirements of different sizes.

The working process is as follows: using machinery such as a forklift to put construction waste into the container 1011 from the opening at the top of the container 1011, starting the conveyor belt 1012, and the construction waste is taken out of the container 1011 through the slit 1013 opened in the container 1011 by the conveyor belt 1012 and enters the next device.

The feeder 101 can be used for construction waste such as stone, sand, soil, etc., and can also include waste such as steel bars and plastics, etc. The feeder 101 has stable feeding and good reliability.

2. Waste separator 102

Please refer to Figures 5a to 5d together. An embodiment of the present invention provides a waste separator 102 for pre-screening the collected construction debris to separate the large impurities such as steel bars, large pieces of sand and gravel in the construction debris from the sand and gravel. The screened sand and gravel can be crushed, screened again, and so on. In this embodiment, the waste separator includes a base 1021 and a rotating member 1022. Specifically, the base 1021 is fixed on the ground 10. In this embodiment, the base 1021 is the main supporting structure of the waste separator, and the stability of the base 1021 determines the overall structural stability of the waste separator. In one embodiment, piles can be driven on the ground 10 to stably fix the base 1021. Furthermore, the base 1021 is a hollow bracket, which stably fixes the waste separator 102 while reducing its own weight and material cost. In one embodiment, the base 1021 is a metal bracket, and a paint or electroplating protective film layer is coated on the surface of the base 1021 to prevent corrosion of the base 1021 by rain, sunlight, etc., thereby increasing the life of the base 1021 and the waste separator.

In this embodiment, the rotating member 1022 includes a first cylinder 22 and a screen member 24, and the screen member 24 is fixed in the first cylinder 22. Specifically, as shown in FIG5c, the first cylinder 22 is a structure formed by a side wall around the central axis of the first cylinder 22, and both ends of the first cylinder 22 are open. The first cylinder 22 is made into a cylindrical shape to facilitate its own rolling. In this embodiment, the side wall of the first cylinder 22 is made of metal material to provide sufficient strength to avoid deformation during rolling. Further, the surface of the side wall is coated with paint or electroplating protective film to avoid corrosion of the first cylinder 22 by rain, sunlight, etc., and to improve the life of the first cylinder 22 and the waste separator. In this embodiment, the first cylinder 22 includes an outer wall surface and an inner wall surface arranged oppositely, the outer wall surface is exposed to the outside world, and the inner wall surface faces the interior of the first cylinder 22. In one embodiment, the outer wall surface and the inner wall surface are coated with paint or electroplating protective film. 5a and 5b, the outer wall of the first cylinder 22 is slidably connected to the base 1021, and the base 1021 drives the rotating member 1022 to rotate around the central axis. Specifically, the outer wall contacts the base 1021, and the base 1021 drives the first cylinder 22 to rotate by the power provided by the driving motor.

Specifically, as shown in FIG5d, the screen member 24 is formed by welding a plurality of steel bars. Specifically, the screen member 24 is formed by interweaving steel bars arranged in different directions to form a screen. The screen size of the screen member 24 is designed according to the volume of the sand and stone to be screened, so as to achieve the effect that the sand and stone can pass through and the impurities cannot pass through. In this embodiment, the screen member 24 is fixed in the first cylinder 22 by welding or the like. Specifically, the screen member 24 is fixed on the inner wall surface of the first cylinder 22. Further, a gap is provided between the screen member 24 and the inner wall surface of the first cylinder 22. In other words, a receiving space is formed between the screen member 24 and the side wall of the first cylinder 22, and the space is used to accommodate the sand and stone that have passed through the screen member 24. Specifically, the waste enters the rotating member 1022 from one end of the rotating member 1022, and the sand and stone enter the gap between the screen member 24 and the first cylinder 22 after passing through the screen member 24, and are discharged from the other end of the rotating member 1022.

The waste enters the rotating part 1022 from one end of the rotating part 1022. Specifically, the waste enters the screen part 24. During the rotation of the rotating part 1022, the waste rolls in the rotating part 1022. Smaller sand and gravel pass through the screen part 24 and enter the gap between the screen part 24 and the inner wall surface of the first cylinder 22, and are finally discharged and collected from the other end of the first cylinder 22. Impurities such as steel bars and large sand and gravel cannot pass through the screen part 24, so they are discharged and collected from one end of the screen part 24, thereby realizing the separation of sand and gravel from impurities. The rotating part 1022 rolls to make the waste fully contact with the screen part 24, avoiding the sand and gravel accumulated on the impurities from being unable to pass through the screen part 24 and being wasted. The sand and gravel screening effect is good and the screening efficiency is high.

Referring to FIG. 5a, in this embodiment, the rotating member 1022 is placed with the central axis tilted to the ground 10. Specifically, the first cylinder 22 and the screen member 24 are tilted to the ground 10, and the waste enters the rotating member 1022 from the higher end of the rotating member 1022, and the waste is separated into impurities and sand and gravel and discharged from the lower end of the rotating member 1022. While the waste enters from one end and rolls in the rotating member 1022, the waste moves to the other end by its own gravity. It can be understood that the process of the waste moving to the other end is actually a rolling process, so that the contact between the waste and the screen member 24 is uniform, and even the sand and gravel stacked on the impurities can have a chance to pass through the screen member 24. The way to discharge impurities relies on the gravity of the impurities themselves, and there is no need to add an additional driving device. The structure is simple and easy to implement. In one embodiment, the angle between the central axis of the first cylinder 22 and the ground 10 is 3° to 5°, which satisfies the requirement of moving the waste from one end to the other end while preventing the slope from being too large to cause the waste to move too fast and fail to be adequately screened.

Referring to FIG. 5d, in this embodiment, the screen member 24 is cylindrical, and the screen member 24 coincides with the central axis of the first cylinder 22. Specifically, the screen member 24 can be a cylindrical shape with openings at both ends, which can be understood as the screen member 24 being a cylindrical structure formed by a wall surface surrounding the central axis, and the screen is a hole set on the wall surface, and the hole is connected to the inner net of the screen member 24, and a plurality of holes are evenly arranged on the wall surface, so that the wall surface becomes a screen. The cylindrical screen member 24 has the same shape as the first cylinder 22, and the screen member 24 coincides with the central axis of the first cylinder 22, so that the distance between the screen member 24 and the side wall of the first cylinder 22 is uniform and constant, thereby improving the screening effect.

Referring to FIG. 5a, in this embodiment, the rotating member 1022 includes a feed end 11 and a discharge end 12 which are arranged opposite to each other. The distance between the feed end 11 and the ground 10 is greater than the distance between the discharge end 12 and the ground 10. At the discharge end 12, the screen member 24 is provided with a protruding section 13 protruding from the first cylinder 22, and impurities in the waste are discharged from the port of the protruding section 13. Specifically, the axial length scale of the screen member 24 is greater than the length dimension of the first cylinder 22. At the feed end 11, the first cylinder 22 is flush with the screen member 24, so that the waste can enter the screen member 24 conveniently. At the discharge end 12, the screen member 24 protrudes from the first cylinder 22, that is, the protruding section 13 protrudes outside the first cylinder 22. The sand and stone passing through the screen member 24 are discharged from the port of the first cylinder 22 located at the discharge end 12, and the impurities such as steel bars that have not passed through the screen member 24 are discharged from the port of the protruding section 13. The sand and stone and the impurities are discharged separately and can be collected separately, so that the sand and stone and the impurities are separated.

In one embodiment, the waste separator further includes a blocking sheet 1023, which is disposed at the discharge end 12, and the protruding section 13 is accommodated between a pair of blocking sheets 1023, and the blocking sheet 1023 is used to prevent the impurities or sand and stones discharged from the discharge end 12 from splashing. Specifically, the blocking sheet 1023 can be a metal plate welded to the base 1021, and a pair of blocking sheets 1023 are funnel-shaped and disposed at the discharge end 12. Since the rotating member 1022 always keeps a rotating state, the sand and impurities discharged from the discharge end 12 keep a certain rotation speed and splash outward, and the blocking sheet 1023 blocks the impurities and sand and stones splashing outward, so that the impurities and sand and stones can enter the collection container or enter the equipment of the next step, thereby improving the utilization rate of sand and stones and reducing waste.

Please refer to FIG. 5a and FIG. 5b. A driving gear 42 is provided on the base 1021. The driving gear 42 is connected to a driving motor. A rack 44 is provided on the outer wall of the first cylinder 22. The rack 44 surrounds the outer wall of the first cylinder 22. The driving gear 42 cooperates with the rack 44 to drive the first cylinder 22 to rotate. Specifically, the driving motor is fixed on the base 1021. The driving motor drives the driving gear 42 to rotate, thereby driving the first cylinder 22 and the rotating member 1022 to rotate as a whole. In one embodiment, the number of the driving gears 42 is at least two, and the driving gears 42 are symmetrically arranged on two opposite sides of the radial direction of the first cylinder 22. Specifically, when the number of the driving gears 42 is two, the two driving gears 42 cooperate with one rack 44, so that the two driving gears 42 drive the rotating member 1022 to rotate through one rack 44. Further, the driving gears 42 are symmetrically arranged on two opposite sides of the radial direction of the first cylinder 22 to symmetrically support the rotating member 1022 from both sides, so that the rotating member 1022 is installed firmly.

In this embodiment, a driven wheel 52 is further provided on the base 1021, and the driven wheel 52 contacts the outer wall surface of the first cylinder 22, and the driven wheel 52 is used to reduce the friction between the base 1021 and the first cylinder 22. Specifically, the driven wheel 52 itself has no driving force, and the driven wheel 52 contacts the outer wall surface of the first cylinder 22. The driven wheel 52 supports the first cylinder 22 and the rotating member 1022 on the base 1021. During the rotation of the rotating member 1022, the friction between the first cylinder 22 and the driven wheel 52 drives the driven wheel 52 to rotate. In other words, the driven wheel 52 changes the friction between the first cylinder 22 and the base 1021 into rolling friction, which reduces energy loss and drives the rotating member 1022 to rotate more efficiently. In one embodiment, the number of the driven wheels 52 is at least two, and the driven wheels 52 are symmetrically arranged on two opposite sides of the first cylinder 22 in the radial direction. The driven wheels 52 support the rotating member 1022 from both sides, so that the rotating member 1022 is firmly installed. In one embodiment, a guide rail 54 is also arranged around the outer wall of the first cylinder 22, and the guide rail 54 cooperates with the driven wheel 52 to fix the motion trajectory of the driven wheel 52 on the first cylinder 22, thereby keeping the first cylinder 22 and the rotating member 1022 rotating around the central axis.

The waste enters the rotating part 1022 from one end of the rotating part 1022. Specifically, the waste enters the screen part 24. During the rotation of the rotating part 1022, the waste rolls in the rotating part 1022. Smaller sand and gravel pass through the screen part 24 and enter the gap between the screen part 24 and the inner wall surface of the first cylinder 22, and are finally discharged and collected from the other end of the first cylinder 22. Impurities such as steel bars and large sand and gravel cannot pass through the screen part 24, so they are discharged and collected from one end of the screen part 24, thereby realizing the separation of sand and gravel from impurities. The rotating part 1022 rolls to make the waste fully contact with the screen part 24, avoiding the sand and gravel accumulated on the impurities from being unable to pass through the screen part 24 and being wasted. The sand and gravel screening effect is good and the screening efficiency is high.

3. Sand dredging machine (referring to the first sand dredging machine 106, the second sand dredging machine 109 can be used for reference)

Please refer to FIG. 6a. The sand dredger 106 provided in the embodiment of the present invention is used to clean the sand and gravel with smaller particles formed by the processes of crushing, mixing, screening and the like of the construction waste residue, and separate the fine impurities in the sand and gravel from the sand and gravel to obtain clean sand and gravel. Specifically, the sand dredger 106 includes a first bracket 1061, a driving wheel 1062, a driven wheel 1063, a chain ring 1065 and a tipping bucket 1068. The first bracket 1061 is the main bracket of the sand dredger 106. The first bracket 1061 is fixed on the ground 10. The first bracket 1061 is the main supporting structure, so it is made of a material with relatively high strength such as metal. The first bracket 1061 is also provided with a driving motor, a gear set and other devices. In one embodiment, the bottom end of the first bracket 1061 is fixed on the ground 10 by screws or the like, so that the first bracket 1061 is stably fixed on the ground 10. In this embodiment, the sedimentation tank 105 is sunken into the ground 10, and the first bracket 1061 is fixed to the side of the sedimentation tank 105. The sedimentation tank 105 is a holding tank for placing sand and stone raw materials. The sedimentation tank 105 also contains continuously flowing water, and the sand and stone are immersed in the water.

It should be understood that the sedimentation tank 105 in this embodiment corresponds to the first water tank 105 in the construction waste treatment system of the present invention. Of course, the sedimentation tank 105 can also be the second water tank 108.

In this embodiment, the driving wheel 1062 is rotatably connected to the top of the first bracket 1061, the driven wheel 1063 is located in the sedimentation tank 105 and is rotatably connected to the bottom 1051 of the sedimentation tank 105, the chain ring 1065 is sleeved on the driving wheel 1062 and the driven wheel 1063, and the chain ring 1065 is stretched between the driving wheel 1062 and the driven wheel 1063. Specifically, the rotating shaft of the driving wheel 1062 is rotatably connected to the driving motor through a gear set, and the driving motor drives the driving wheel 1062 to rotate. In one embodiment, the driving wheel 1062 is a cylindrical rolling wheel to increase the contact area between the chain ring 1065 and the driving wheel 1062, which is conducive to improving the energy transmission efficiency of the driving wheel 1062 driving the chain ring 1065 to rotate. The driven wheel 1063 is located at the bottom 1051 of the sedimentation tank 105. The driven wheel 1063 and the driving wheel 1062 stretch the chain ring 1065, so that the chain ring 1065 is driven to move through the cooperation of the driving wheel 1062 and the driven wheel 1063. In one embodiment, the driven wheel 1063 is a cylindrical rolling wheel to increase the contact area between the chain ring 1065 and the driven wheel 1063, which is beneficial to improve the support effect of the driven wheel 1063 on the chain ring 1065. As shown in FIG6a, the driving wheel 1062 drives the chain ring 1065 to rotate counterclockwise. In one embodiment, the chain ring 1065 is partially straightened due to the gravity of the chain ring 1065 and the tensile force of the driving wheel 1062 and the driven wheel 1063. In one embodiment, the chain ring 1065 includes a plurality of chain links, each of which is connected end to end to form a closed chain ring 1065. Specifically, each of the chain links is connected in a hinged manner, so that each of the chain links has a certain range of motion.

In this embodiment, the tipping bucket 1068 is fixed to the outside of the chain ring 1065, and is used to stir and scoop up the sand and gravel in the sedimentation tank 105. Specifically, the tipping bucket 1068 is fixed to the outside of the chain ring 1065 by welding or other means. It is worth noting that the outside of the chain ring 1065 is the side of the chain ring 1065 away from the driving wheel 1062 and the driven wheel 1063, and the inside of the chain ring 1065 is the side of the chain ring 1065 contacting the driving wheel 1062 and the driven wheel 1063. In one embodiment, each tipping bucket 1068 is welded to a chain link, and the tipping bucket 1068 is synchronized with the motion state of the connection. In this embodiment, the bucket 1068 enters or leaves the sedimentation tank 105 under the drive of the chain ring 1065. When the bucket 1068 enters the sedimentation tank 105, the water and sand in the sedimentation tank 105 are stirred, and the sand and stones grind each other, so that the impurities covering the surface of the sand and stones are separated from the sand and stones, and the water vapor layer covering the sand grains is destroyed, which is beneficial to the subsequent dehydration process. When the bucket 1068 passes the bottom of the sedimentation tank 105 and rises to the water surface, the bucket 1068 scoops up the sand and stones. In fact, the bucket 1068 also scoops up the impurities and water separated from the sand and stones. After the chain ring 1065 drives the bucket 1068 to rise and move out of the water surface, water and impurities with smaller volume leak out from the bottom of the bucket 1068, thereby obtaining clean sand and stones. The cleaning process of sand and stones is simple, the cleaning effect is good, the cleaning process is continuous and uninterrupted, and the cleaning efficiency is high.

In this embodiment, the line connecting the driving wheel 1062 and the driven wheel 1063 is inclined to the ground 10. Specifically, the angle between the line connecting the driving wheel 1062 and the driven wheel 1063 and the ground 10 is 45° to 60°, so that the tipping bucket 1068 moves in a direction inclined to the ground 10 by 45° to 60°. Compared with the ascending direction perpendicular to the ground 10, the oblique ascending increases the formation of the tipping bucket 1068 during the ascending process, thereby providing more time for water and impurities to leak out of the tipping bucket 1068.

Please refer to FIG. 6b. In this embodiment, the tipping bucket 1068 includes a receiving portion 16 and a protruding portion 15. The protruding portion 15 is convexly arranged at the edge of the receiving portion 16 for shoveling up the sand and gravel in the sedimentation tank 105. The receiving portion 16 is provided with a filter hole 17 for leaking out water and impurities in the sand and gravel. Specifically, the filter hole 17 is arranged at the bottom end of the receiving portion 16 to facilitate the leakage of water and impurities. In one embodiment, the size of the filter hole 17 is designed according to the particle size of the impurities to be leaked.

In this embodiment, a discharge guide trough 14 is further provided at the top of the first bracket 1061. The discharge guide trough 14 is inclined at the ground 10. The discharge guide trough 14 is used to discharge the sand and gravel transported to the top of the first bracket 1061 by the tipping bucket 1068. Specifically, the discharge guide trough 14 is inclined at the ground 10. When the tipping bucket 1068 transports the sand and gravel, the sand and gravel are raised to a high place. The discharge guide trough 14 transports the sand and gravel from a high place to a low place, and then transports the sand and gravel to the next processing step. The sand and gravel are transported by their own gravity, and the transportation efficiency of the sand and gravel is high, and no additional power device is required.

The driving wheel 1062 drives the chain ring 1065 to drive the tipping bucket 1068 to move. The tipping bucket 1068 stirs the sand and gravel in the sedimentation tank 105 to make the sand and gravel grind against each other, so that the impurities covering the surface of the sand and gravel are separated from the sand and gravel. The tipping bucket 1068 scoops up the mixture of sand and gravel, some impurities and water in the sedimentation tank 105. During the movement of the tipping bucket 1068 from the sedimentation tank 105 to the top of the first bracket 1061, impurities and water leak out from the filter holes 17 at the bottom of the tipping bucket 1068, thereby obtaining clean sand and gravel. The cleaning process of the sand and gravel is simple, the cleaning effect is good, the cleaning process is continuous and uninterrupted, and the cleaning efficiency is high.

In this embodiment, the sand dredger 106 further includes a second bracket 1066, the second bracket 1066 includes a first end 1064 and a second end 1067 which are arranged opposite to each other, the first end 1064 is fixed to the top of the first bracket 1061, the driving wheel 1062 is rotatably connected to the first end 1064, the second end 1067 is fixed to the bottom 1051 of the sedimentation tank 105, and the driven wheel 1063 is rotatably connected to the second end 1067. Specifically, the second bracket 1066, the first bracket 1061 and the ground 10 form a triangle, which is conducive to the stability of the structure. Further, the second bracket 1066 serves as a supporting structure for carrying the driving wheel 1062 and the driven wheel 1063, the rotating shaft of the driving wheel 1062 is fixed to the first end 1064, the rotating shaft of the driven wheel 1063 is fixed to the second end 1067, and the second bracket 1066 maintains the distance between the driving wheel 1062 and the driven wheel 1063, thereby determining the height of the tipping bucket 1068. In one embodiment, the second end 1067 of the second bracket 1066 contacts the bottom 1051 of the sedimentation tank 105 and is fixed to the bottom 1051 by screws or the like. In this embodiment, the second bracket 1066 can be formed by two symmetrical rod-shaped brackets arranged in parallel. Simplifying the structure of the second bracket 1066 is conducive to reducing the overall weight of the sand dredger 106 and saving costs.

Please refer to Fig. 6a. In this embodiment, the second bracket 1066 is provided with an auxiliary wheel 1069, which abuts against the inner side of the chain ring 1065 to support the chain ring 1065. Specifically, the auxiliary wheel 1069 is a non-actively rotating roller, and the surface of the auxiliary wheel 1069 contacts the inner side of the chain ring 1065. The rotation of the chain ring 1065 drives the rotation of the auxiliary wheel 1069. In other words, the auxiliary wheel 1069 causes rolling friction between the chain ring 1065 and the second bracket 1066. The auxiliary wheel 1069 plays a role in supporting the chain ring 1065 and the tipping bucket 1068, while reducing the friction resistance of the chain ring 1065 when it rotates.

In one embodiment, the auxiliary wheel 1069 is disposed between the driving wheel 1062 and the driven wheel 1063, and the number of the auxiliary wheels 1069 is multiple, and the spacing between the auxiliary wheels 1069 is the same. Specifically, the multiple auxiliary wheels 1069 jointly support the chain ring 1065, and the longer chain ring 1065 is supported as a whole. The spacing between the multiple auxiliary wheels 1069 is the same, so that the forces on each part of the chain ring 1065 are the same, and the chain ring 1065 can be flattened as a whole, which is beneficial to the rotation of the chain ring 1065 and the rise of the tipping bucket 1068.

The driving wheel 1062 drives the chain ring 1065 to drive the tipping bucket 1068 to move. The tipping bucket 1068 stirs the sand and gravel in the sedimentation tank 105 to make the sand and gravel grind against each other, so that the impurities covering the surface of the sand and gravel are separated from the sand and gravel. The tipping bucket 1068 scoops up the mixture of sand and gravel, some impurities and water in the sedimentation tank 105. During the movement of the tipping bucket 1068 from the sedimentation tank 105 to the top of the first bracket 1061, impurities and water leak out from the filter holes 17 at the bottom of the tipping bucket 1068, thereby obtaining clean sand and gravel. The cleaning process of the sand and gravel is simple, the cleaning effect is good, the cleaning process is continuous and uninterrupted, and the cleaning efficiency is high.

The embodiment of the present invention also provides a sand and gravel cleaning method, which uses the sand dredger 106 and the sedimentation tank 105 provided by the embodiment of the present invention. Specifically, the sand dredger 106 includes a first bracket 1061, a driving wheel 1062, a driven wheel 1063, a chain ring 1065 and a tipping bucket 1068. The first bracket 1061 is fixed on the ground 10, the driving wheel 1062 is rotatably connected to the top of the first bracket 1061, the driven wheel 1063 is located in the sedimentation tank 105 and is rotatably connected to the bottom 1051 of the sedimentation tank 105, the chain ring 1065 is sleeved on the driving wheel 1062 and the driven wheel 1063, the chain ring 1065 is stretched between the driving wheel 1062 and the driven wheel 1063, the tipping bucket 1068 is fixed on the outside of the chain ring 1065, the driving wheel 1062 drives the chain ring 1065 to drive the tipping bucket 1068 to move, and the tipping bucket 1068 stirs the sand and gravel in the sedimentation tank 105 so that the sand and gravel grind each other.

In one embodiment, when washing sand and gravel, water is continuously added to the sedimentation tank 105, and the sedimentation tank 105 is provided with an overflow port, and some impurities decomposed by grinding sand and gravel float on the water surface and are discharged from the overflow port with water. In this embodiment, after adding water to the sedimentation tank 105, the water flow plays a certain stirring role in the sedimentation tank 105. At the same time, the tipping bucket 1068 stirs the sand and gravel in the water, and the impurities on the surface of the sand and gravel are separated from the sand and gravel. Some impurities with lower density float on the water surface. When the water level in the sedimentation tank 105 reaches the position of the overflow port, the impurities are discharged from the overflow port together with the water, thereby removing some impurities.

In one embodiment, the line connecting the driving wheel 1062 and the driven wheel 1063 is inclined to the ground 10 , and the tipping bucket 1068 is provided with filtering holes 17 , and water and impurities leak out through the filtering holes 17 during the rising process of the tipping bucket 1068 .

The driving wheel 1062 drives the chain ring 1065 to drive the tipping bucket 1068 to move. The tipping bucket 1068 stirs the sand and gravel in the sedimentation tank 105 to make the sand and gravel grind against each other, so that the impurities covering the surface of the sand and gravel are separated from the sand and gravel. The tipping bucket 1068 scoops up the mixture of sand and gravel, some impurities and water in the sedimentation tank 105. During the movement of the tipping bucket 1068 from the sedimentation tank 105 to the top of the first bracket 1061, impurities and water leak out from the filter holes 17 at the bottom of the tipping bucket 1068, thereby obtaining clean sand and gravel. The cleaning process of the sand and gravel is simple, the cleaning effect is good, the cleaning process is continuous and uninterrupted, and the cleaning efficiency is high.

4. Sand screening machine 110

Please refer to Figures 7a, 7b and 7c together. An embodiment of the present invention provides a sand screening machine 110 for separating sand and impurities such as gravel from a sand and gravel mixture, collecting the screened pure sand for reuse, and discharging and collecting impurities such as gravel. The sand screening machine 110 provided by the embodiment of the present invention includes a first motor 1101, a first cylinder 1102 and a second cylinder 1103. Specifically, the first motor 1101 is disposed on the ground 10. Of course, the first motor 1101 can be directly fixed to the ground 10, or it can be fixed to the ground 10 through a bracket fixed to the ground 10. In one embodiment, the first motor 1101 can be a stepper motor to provide driving force.

In conjunction with FIG. 7b, the first cylinder 1102 is disposed on the ground 10. Specifically, the first cylinder 1102 is mounted on the ground 10 through a bracket. In one embodiment, the sand screening machine 110 further includes a first rotating shaft 1104. The first cylinder 1102 is sleeved on the first rotating shaft 1104, and the first cylinder 1102 is fixedly connected to the first rotating shaft 1104. The two ends of the first rotating shaft 1104 can be rotatably connected by the bracket, so that the first cylinder 1102 is mounted on the ground 10. In this embodiment, the first cylinder 1102 includes a first outer wall 21. It can be understood that the first cylinder 1102 is a structure formed by the first outer wall 21 surrounding the central axis of the first cylinder 1102, and both ends of the first cylinder 1102 are open. In one embodiment, the first outer wall 21 is provided with a through hole 600, and the through hole 600 connects the inside of the first cylinder 1102 with the outside. Specifically, the number of the through holes 600 is multiple, and the through holes 600 have the same size and are evenly distributed on the first outer wall 21. Further, the size of the through hole 600 is designed according to the size of the sand grains. Specifically, the size of the through hole 600 can allow small particles of sand to pass through, but cannot allow impurities such as stones that are larger than the sand grains to pass through. According to the type of the sand and stone mixture and the size of the target sand grains, through holes 600 of different sizes can be designed. In this embodiment, the first motor 1101 is connected to the first cylinder 1102 and is used to drive the first cylinder 1102 to rotate around the central axis. Specifically, the first motor 1101 is connected to the first rotating shaft 1104, and the first motor 1101 drives the first rotating shaft 1104 to rotate, thereby driving the first cylinder 1102 to rotate. In one embodiment, the first rotating shaft 1104 coincides with the central axis of the first cylinder 1102, and the rotation of the first rotating shaft 1104 can drive the first cylinder 1102 to rotate around the central axis. In this embodiment, a speed reducer is further provided between the first motor 1101 and the first rotating shaft 1104, and the speed reducer transmits the torque output by the first motor 1101 to the first rotating shaft 1104, so that the first rotating shaft 1104 obtains a suitable rotation speed. In this embodiment, the sand and stone mixture enters the first cylinder 1102 from one end of the first cylinder 1102. Specifically, the first cylinder 1102 includes a feed port 1106 and a discharge port 1105 arranged relatively to each other. The sand and stone mixture enters the first cylinder 1102 from the feed port 1106, and thus rolls in the first cylinder 1102. In this embodiment, during the rolling of the sand and stone mixture in the first cylinder 1102, the sand grains leak out from the through hole 600 of the first outer wall 21. Since the first cylinder 1102 continues to roll, the sand and stone mixture entering the first cylinder 1102 can be prevented from stacking together, resulting in the sand grains stacked on the impurities being unable to enter the through hole 600 of the first outer wall 21. The sand and stone mixture is fully in contact with the first outer wall 21, thereby improving the screening effect and avoiding waste.

In conjunction with Fig. 7c, the second cylinder 1103 is sleeved outside the first cylinder 1102. In this embodiment, the second cylinder 1103 and the first cylinder 1102 can move relative to each other. In one embodiment, the second cylinder 1103 is fixed relative to the ground 10, and the first cylinder 1102 can rotate on its central axis. The second cylinder 1103 includes a second outer wall 31. It can be understood that the second cylinder 1103 is a structure formed by the second outer wall 31 around the central axis of the second cylinder 1103, and both ends of the second cylinder 1103 are open. In one embodiment, the second outer wall 31 is provided with a through hole 600, and the through hole 600 connects the inside of the second cylinder 1103 with the outside world. Specifically, the number of the through holes 600 is multiple, the sizes of the through holes 600 are the same, and they are evenly distributed on the second outer wall 31. Further, the size of the through hole 600 is designed according to the size of the sand grains. Specifically, the size of the through hole 600 can allow small sand grains to pass through, but cannot allow impurities such as stones that are larger than the sand grains to pass through. According to the type of the sand and stone mixture and the size of the target sand grains, through holes 600 of different sizes can be designed. The sand grains leaking out of the through hole 600 of the first outer wall 21 enter the second cylinder 1103. Specifically, the sand grains enter between the first outer wall 21 and the second outer wall 31, and are screened by the through hole 600 on the second outer wall 31. The sand grains are screened by the first outer wall 21 and the second outer wall 31 in turn and then leak out of the second outer wall 31. A container can be placed outside the second outer wall 31 to collect pure sand grains, while impurities are discharged from one end of the first cylinder 1102 or the second cylinder 1103. Specifically, impurities can be discharged through two paths. Impurities that do not pass through the through hole 600 of the first outer wall 21 are discharged from one end of the first cylinder 1102, i.e., the discharge port 1105. Impurities that pass through the through hole 600 of the first outer wall 21 but not through the through hole 600 of the second outer wall 31 are discharged from one end of the second cylinder 1103, i.e., the opening at the end of the second cylinder 1103 corresponding to the discharge port 1105.

During the rolling of the first cylinder 1102, the first outer wall 21 performs the first screening on the sand and gravel mixture, that is, the sand particles leak out through the through hole 600 of the first outer wall 21, and impurities such as larger sand and gravel are discharged from one end of the first cylinder 1102. The sand and gravel entering between the first cylinder 1102 and the second cylinder 1103 are screened for the second time, that is, the sand particles leak out through the through hole 600 of the second outer wall 31, and impurities such as larger sand and gravel are discharged from one end of the second cylinder 1103. The two screening processes effectively improve the purity of the sand particles, the screening effect is good, and the screening efficiency is high.

In this embodiment, the first cylinder 1102 is placed with the central axis tilted to the ground 10. Specifically, the first rotating shaft 1104 coincides with the central axis of the first cylinder 1102, and the first rotating shaft 1104 is placed tilted to the ground 10. In one embodiment, the distance between one end of the feed port 1106 of the first cylinder 1102 and the ground 10 is greater than one end of the discharge port 1105. The sand and stone mixture entering the first cylinder 1102 through the feed port 1106 rolls toward the discharge port 1105 by its own gravity during the rolling process of the first cylinder 1102. The sand leaks out from the through hole 600 of the first outer wall 21, and the impurities such as stones roll on the first outer wall 21 and roll to the discharge port 1105, so as to be collected by the container placed at the discharge port 1105. The way to discharge impurities depends on the gravity of the impurities themselves, without adding an additional driving device, and the structure is simple and easy to implement. In one embodiment, the angle between the central axis of the first cylinder 1102 and the ground 10 is 3°~5°.

In this embodiment, the central axis of the first cylinder 1102 is coaxial with the central axis of the second cylinder 1103. Specifically, the distance between the first outer wall 21 and the second outer wall 31 remains unchanged, which is conducive to uniform screening of the sand and stone mixture. In one embodiment, the aperture of the through hole 600 of the first outer wall 21 is larger than the aperture of the through hole 600 of the second outer wall 31. The through hole 600 of the first outer wall 21 is used for the first screening of the sand and stone mixture, and the through hole 600 of the second outer wall 31 is used for the second screening of the sand and stone mixture. The first screening can be performed as a preliminary screening to screen out impurities with larger particles in the sand and stone mixture, and the obtained sand still contains some impurities. The second screening can be performed as a fine screening to screen out impurities with smaller particles in the sand and stone mixture to obtain pure sand. Two-stage screening can achieve better screening effect. Specifically, if only one screening is performed, if the size of the through hole 600 is too large, the purity of the screened sand will be low. If the size of the through hole 600 is too small, large impurities will block the through hole 600 during the screening process, and some sand cannot pass through the through hole 600, resulting in low screening efficiency and waste of raw materials. The first screening removes large impurities, and the second screening removes small impurities, with high screening efficiency and good screening effect.

In one embodiment, the sand screening machine further includes a second motor, which is connected to the second cylinder 1103 and is used to drive the second cylinder 1103 to rotate about the central axis. The second cylinder 1103 rotates about the central axis, and during the rolling of the sand and stone mixture in the second cylinder 1103, the sand leaks out from the through hole 600 of the second outer wall 31. Since the second cylinder 1103 continues to roll, the sand and stone mixture entering the second cylinder 1103 can be prevented from stacking together, so that the sand stacked on the impurities cannot enter the through hole 600 of the second outer wall 31. The sand and stone mixture is in full contact with the second outer wall 31, thereby improving the screening effect and avoiding waste.

In one embodiment, the first barrel 1102 and the second barrel 1103 rotate in opposite directions, and the two screening processes are opposite, which can improve the screening effect. In one embodiment, a shell is further provided outside the second barrel 1103, and the shell is used to protect the second barrel 1103 and prevent the sand from being thrown out of the second barrel 1103 during the rotation process and being difficult to collect.

In this embodiment, the first cylinder 1102 includes a plurality of first sub-cylinders, which are connected end to end and spliced to form the first cylinder 1102. The length of the first sub-cylinder is relatively short, and a plurality of first sub-cylinders can be spliced to form a large-sized first cylinder 1102. The splicing method is simple and easy to implement, which is conducive to the assembly and transportation of the sand screening machine.

In this embodiment, the second cylinder 1103 includes a plurality of second sub-cylinders, which are connected end to end and spliced to form the second cylinder 1103. The second sub-cylinder is short in length, and a plurality of second sub-cylinders can be spliced to form a large-sized second cylinder 1103. The splicing method is simple and easy to implement, which is conducive to the assembly and transportation of the sand screening machine.

In the sand screening machine provided by the embodiment of the present invention, the first outer wall 21 and the second outer wall 31 are formed by mesh-shaped metal wire weaving. Specifically, similar to metal gauze, the metal wire weaving can easily obtain through holes 600 of required sizes, and the density of the through holes 600 is high. Compared with drilling holes on the outer wall, the first outer wall 21 or the second outer wall 31 formed by metal wire weaving has a small mass, is easy to assemble, and the driving force required to be provided by the motor is small, and the energy consumed by the sand screening machine during the sand screening process is small.

During the rolling of the first cylinder 1102, the first outer wall 21 performs the first screening on the sand and gravel mixture, that is, the sand particles leak out through the through hole 600 of the first outer wall 21, and impurities such as larger sand and gravel are discharged from one end of the first cylinder 1102. The sand and gravel entering between the first cylinder 1102 and the second cylinder 1103 are screened for the second time, that is, the sand particles leak out through the through hole 600 of the second outer wall 31, and impurities such as larger sand and gravel are discharged from one end of the second cylinder 1103. The two screening processes effectively improve the purity of the sand particles, the screening effect is good, and the screening efficiency is high.

5. Sand washing machine 112

Please refer to Figures 8a to 8e. A preferred embodiment of the present invention provides a sand washing machine 112, including a sand washing pool 01, a support frame 02 fixedly connected to the sand washing pool 01, a wheel 10-1 rotatably connected to the support frame 02, and a motor 03 driving the wheel 10-1 to rotate, wherein the wheel 10-1 includes a rotating shaft 04 mounted on the support frame 02, a circular screen 06 connected to the rotating shaft 04 through a support rod 05, and a plurality of partitions 011 fixedly connected to the outer peripheral surface of the screen 06 and arranged in parallel along the circumferential direction. A plurality of sieve plates 012 are fixedly connected between two adjacent partitions 011, one end of the sieve plate 012 is connected to the sieve 06, and the other end is arranged away from the sieve 06 and inclined toward the movement direction of the wheel 10-1, so that the angle a between the tangent of the connection point between the sieve plate 012 and the sieve 06 and the sieve plate 012 is an acute angle, and the plurality of sieve plates 012 are arranged in an array along the center of the rotating shaft 04, a first through hole (not numbered in the figure) is provided on the sieve 06, and a second through hole 0121 is provided on the sieve plate 012.

In this embodiment, a plurality of partitions 011 and sieve plates 012 are provided, and a first through hole is opened on the sieve 06, and a second through hole 0121 is opened on the sieve plate 012, so that when the wheel 10-1 rotates, both the sieve 06 and the sieve plate 012 can allow mud in the sand to pass through, thereby thoroughly washing the sand, improving the sand washing efficiency, and eliminating the need for rework.

Specifically, the structures of the first through hole and the second through hole 0121 can be different, for example, the first through hole is circular, and the second through hole 0121 is an elongated hole. Preferably, the structures of the first through hole and the second through hole 0121 are the same, for example, both are through holes or both are elongated holes, and the size of the first through hole is 1~10mm, wherein when the first through hole is a circular hole, this size refers to the diameter of the circle, and when the first through hole is an elongated hole, this size refers to the size of the largest object that can pass through the hole. Further preferably, the size of the first through hole is 3~7mm, and further preferably, the size of the first through hole is 4~6mm.

Specifically, the support frame 02 is arranged on two opposite sides of the sand washing pool 01, so that when the impeller 10-1 is connected to the support frame 02, part of the impeller 10-1 is located in the sand washing pool 01. The sand washing pool 01 contains a mud-sand mixture. After water is passed into the sand washing pool 01, part of the mud in the mud-sand mixture melts into the water to form mud water. Since sand is insoluble in water and generally has a large particle size, it cannot pass through the first through hole and the second through hole 0121, and the mud structure is unstable. During the rotation of the impeller 10-1, part of the mud with a larger particle size is decomposed into small-sized mud due to the friction with the sand and the impeller 10-1, and leaks from the first through hole and the second through hole 0121 into the sand washing pool 01, contacts with water and dissolves in the water, thereby completing the sand washing.

The sieve plate 012 is provided with a second through hole 0121. Compared with a solution in which the sieve plate 012 has no hole, mud with larger particle size can leak through the first through hole, and can also leak through the second through hole 0121 onto the sieve 06, and then leak through the first through hole into the sand washing pool 01 to mix with water, so that the mud decomposes faster, and the particle size of the mud entering the sand washing pool 01 is smaller, which is more soluble in water, and the sand washing speed is faster.

In this embodiment, the water-soluble mud is located in the upper layer of the muddy water in the sand washing pool 01. By pumping away the muddy water in the upper layer, the separation of the mud in the sand is achieved. Subsequently, the mud can be separated by a sedimentation process to obtain mud with higher purity.

In order to remove the muddy water in the sand washing pool 01, a water outlet 33 can be provided on the sand washing pool 01. The water outlet 33 is provided near the upper edge of the sand washing pool 01. The muddy water in the sand washing pool 01 overflows here. The water outlet 33 can be connected to the water outlet 33 by providing a pipe or a canal to transport the muddy water away. It can be understood that in order to speed up the process, multiple water outlets 33 can be provided on the sand washing pool 01.

In this embodiment, the sand washing pool 01 is further connected to a support platform 07, and the motor 03 is arranged on the support platform 07. The support platform 07 includes a support inclined plate 08. The support platform 07 is arranged on the sand washing pool 01 to arrange the motor 03, so that there is no need to find space on the site to arrange the motor 03, which is conducive to optimizing the space occupied by the equipment and making the production line more compact.

In this embodiment, a feed end 1121 is provided in a direction perpendicular to the axial direction of the rotating shaft 04 , and the feed end 1121 is inclined so that the silt enters the sand washing pool 01 under the action of gravity.

Specifically, the feed end 1121 may be a side surface of the sand washing tank 01 , or an inclined plate-shaped structure may be separately provided on the sand washing tank 01 .

Furthermore, a discharge end 1122 may be provided on the other side of the sand washing pool 01 relative to the feed end 1121, and the discharge end 1122 may also be tilted so that the sand washing pool 01 is in the shape of a boat.

In one embodiment, referring to Figures 1 and 2, a plurality of flat plates 013 are fixedly connected between two adjacent partitions 011, and the flat plate 013 is arranged between two adjacent screen plates 012. One end of the flat plate 013 is connected to the screen 06, and the other end is arranged away from the screen 06 and inclined toward the movement direction of the wheel 10-1, so that the angle b between the tangent of the connection point between the flat plate 013 and the screen 06 and the flat plate 013 is an acute angle, and a plurality of the flat plates 013 are arranged in an array along the center of the rotating shaft 04.

Specifically, the sieve plate 012 and the flat plate 013 are arranged alternately between two adjacent partitions 011. In a preferred embodiment, the sieve plate 012 and the flat plate 013 have the same inclination angle on the screen 06. In a further preferred embodiment, the distance between the sieve plate 012 and two adjacent flat plates 013 is equal, and the distance between the flat plate 013 and two adjacent sieve plates 012 is equal.

Since the mud and sand mixture also contains sand with smaller particle sizes, the sand with smaller particle sizes can also leak through the sieve plate 012 and the screen 06, so that less sand is pushed forward when the impeller 10-1 rotates. Therefore, a flat plate 013 is provided, and no holes are provided on the flat plate 013. The sand with smaller particle sizes leaks through the sieve plate 012 and is received by the flat plate 013, and then pushed forward with the rotation of the impeller 10-1, thereby increasing the discharge speed of the sand.

Furthermore, the partition includes a first partition 011, a second partition 021, a third partition 031, a fourth partition 041 and a fifth partition 051, an adjacent first sieve plate 012 and a first flat plate 013 are arranged between the first partition 011 and the second partition 021, an adjacent second sieve plate 022 and a second flat plate 023 are arranged between the second partition 021 and the third partition 031, an adjacent third sieve plate 032 and a third flat plate 033 are arranged between the third partition 031 and the fourth partition 041, an adjacent fourth sieve plate 042 and a fourth flat plate 043 are arranged between the fourth partition 041 and the fifth partition 051, the first sieve plate 012 is flush and coplanar with the third flat plate 033, and the first flat plate 013 is flush and coplanar with the third sieve plate 032.

Through the above arrangement, the number of partitions is increased, so that the effective use area of the impeller 10-1 is increased, and by arranging the first screen plate 012 to be flush with the third flat plate 033 and the first flat plate 013 to be flush with the third screen plate 032, the speed of pushing sand between each partition is different, while the discharge end 1122 can obtain a relatively continuous sand discharge rate, which is beneficial to the layout of subsequent processes.

Furthermore, the second screen plate 022 is flush with the fourth flat plate 043 and the second flat plate 023 is flush with the fourth screen plate 042. The sand discharge rate is further kept continuous.

Furthermore, the second sieve plate 022 is arranged at the middle position between the first sieve plate 012 and the first flat plate 013, and the second flat plate 023 is arranged at the middle position between the first flat plate 013 and the first sieve plate 012. Such arrangement maximizes the advantages of multiple partitions, and compared with a solution in which one partition or multiple partitions but the sieve plates therein are all arranged flush, the discharge is continuous and stable, and the driving force required on the rotating wheel 10-1 is always relatively stable, which also saves the power consumption of the motor 03.

The first partition plate 011 and the fifth partition plate 051 are located at the outermost side of the runner 10-1, and the outer edges of the first partition plate 011 and the fifth partition plate 051 are provided with serrations 052 distributed along the circumferential direction. The purpose of providing the serrations 052 is to loosen the mud and sand mixture located on the side of the sand washing pool 01 to prevent the runner 10-1 from getting stuck.

Please refer to Figure 8e, which is a schematic diagram of the actual use process of the sand washing machine 112 of this embodiment. Four sand washers are arranged in series, wherein the feed end 1121 enters the mud and sand mixture 01, and water is passed into it to form muddy water. The impeller 10-1 rotates clockwise to fully stir the mud and sand in the mud and sand mixture 01 and drive the rotation. The mud, sand and the impeller 10-1 are decomposed by friction, and leak through the screen and screen plate in the impeller 10-1 into the sand washing pool and dissolve in water. The structure of pumping away the mud and water in the upper layer of the sand washing pool is omitted in the figure. The washed sand is unloaded from the discharge end 1122 to complete the sand washing process.

Since modern production lines require high sand washing efficiency and large sand output, in actual production, although a single sand washing machine can achieve good sand washing effect and the mud content in the washed sand can be very low, the sand output of a single sand washing machine is small. Instead, multiple sand washing machines are connected in series, and the technical requirements of each sand washing machine are slightly lower than those of a single sand washing machine. In order to achieve a large amount of sand output, take 4 sand washing machines in series as an example: the discharge end 1122 of the first sand washing machine is tightly attached to the feed end 1123 of the second sand washing machine, and the discharge end 1124 of the second sand washing machine is tightly attached to the feed end 1125 of the third sand washing machine. 25 is tightly attached, the discharge end 1126 of the third sand washing machine is tightly attached to the feed end 4011127 of the fourth sand washing machine, and the discharge end 1128 of the fourth sand washing machine is connected with a discharge structure 1129, which can be, for example, a conveyor belt, etc. The first wheel 10-1, the second wheel 10-2, the third wheel 10-3 and the fourth wheel 10-4 rotate clockwise to stir the mud and sand mixture in their respective sand washing pools and push the sand forward, and the mud flows away from the muddy water in their respective sand washing pools. After the sand is washed by the four sand washers, the sand finally obtained at the discharge mechanism 1129 has high purity and low mud content.

6. Coarse sand dehydrator 113 (fine sand dehydrator 214 for reference)

Please refer to Figures 9a to 9b. A preferred embodiment of the present invention provides a vibrating dewatering screen, including a screen box 610 and a support member 640. The screen box 610 is supported by the support member 640. The support member 640 has a shock absorbing function. The screen box 610 includes a screen surface 611, a first side frame 612 and a second side frame 613. The first side frame 612 and the second side frame 613 are arranged on both sides of the screen surface 611. A first crossbeam 621 is arranged between the first side frame 612 and the second side frame 613. The first crossbeam 621 is arranged between the first side frame 612 and the second side frame 613. 1, the output shafts of the first motor 631 and the second motor 632 are respectively connected with eccentric blocks (not shown), and the first motor 631 and the second motor 632 rotate synchronously in opposite directions, and the eccentric blocks form two vibrators, and the centrifugal forces generated by the two vibrators are superimposed along the vibration direction, and the reverse centrifugal forces are offset, so that the screen box 610 performs periodic reciprocating motion in a straight line direction, and the screen surface 611 is provided with screen holes 601, and the size of the screen holes 601 is smaller than the size of the material.

In this embodiment, by setting the first motor 631 and the second motor 632, and making the first motor 631 and the second motor 632 rotate synchronously in opposite directions, the screen box 610 is made to perform periodic reciprocating motion in a straight line direction, and the size of the screen hole 601 is smaller than the size of the material, so that the smaller material will not leak through the screen hole 601, thereby solving the problems of low vibration dehydration efficiency and serious loss of fine sand materials.

In this embodiment, the working principle of vibration dehydration is to adopt dual motor self-synchronization technology, by setting an eccentric block to form two vibrators, and setting two vibrators arranged side by side on the screen box 610 for synchronous reverse operation, the centrifugal force generated by the two sets of eccentric masses is superimposed along the vibration direction, and the reverse centrifugal force is offset, thereby forming a single excitation vibration without vibration direction, so that the screen box 610 performs reciprocating linear motion. Among them, the first crossbeam 621 is also provided with a platform 623 for supporting the first motor 631 and the second motor 632, and the platform 623 can be parallel to the screen surface 611 or have an inclined angle.

In this embodiment, the first motor 631 and the second motor 632 further include a housing, and the output shaft and the eccentric block connected to the output shaft are covered by the housing, so that the first motor 631 and the second motor 632 form a whole. The first motor 631 and the second motor 632 are arranged in a direction along the screen surface 611, that is, in a plane extending direction of the first side frame 612 and the second side frame 613, and the first motor 631 and the second motor 632 can be arranged in parallel. It should be noted that the direction of the first motor 631 and the second motor 632 refers to the extension direction of the output shaft.

In the present embodiment, the screen box 610 includes a feed end and a discharge end, and the first motor 631 and the second motor 632 are in the direction from the feed end to the discharge end, that is, the rotating shafts of the first motor 631 and the second motor 632 are parallel to the direction from the feed end to the discharge end, and the centrifugal forces of the eccentric blocks connected to the rotating shafts of the first motor 631 and the second motor 632 offset each other, and there is only induced vibration in the direction from the feed end to the discharge end, so that the vibration of the screen box 610 is regular, so that the material is dehydrated more evenly in the screen box 610, thereby improving the dehydration efficiency.

In this embodiment, the mesh holes 601 on the mesh surface 611 are arranged in an array, and the arrangement is generally a rectangular array, and of course it can also be a circular array. The mesh holes 601 are generally circular through holes, and the size of the mesh holes 601 refers to the diameter of the circular mesh holes. The mesh holes 601 can also be rectangular through holes, and the size of the mesh holes 601 refers to the distance between the two opposite sides of the rectangular mesh holes.

Several preferred size ranges of the sieve holes 601 are given below, which satisfy the requirement that the size of the sieve holes 601 is smaller than the size of the material, so that the smaller material will not leak through the sieve holes 601, thereby solving the problem of serious loss of fine sand material.

Furthermore, the size of the sieve hole 601 is 0.005-0.035 mm.

Furthermore, the size of the sieve hole 601 is 0.010-0.030 mm.

Furthermore, the size of the sieve hole 601 is 0.010 mm.

Furthermore, the size of the sieve hole 601 is 0.030 mm.

In one embodiment, please refer to FIG. 9 b , a base 642 is further included, the screen surface 611 is arranged to be inclined with respect to the base 642 , and an angle e formed between the screen surface 611 and a reference surface of the base 642 is 0 to 20°.

In this embodiment, the feed end of the screen surface 611 is at a higher height than the discharge end, that is, the screen surface 611 is inclined downward from the feed end to the discharge end, and the material moves faster on the screen surface 611, which can speed up the dehydration efficiency. Of course, the angle e formed by the screen surface 611 and the reference surface of the base 642 should not be too large to prevent the material from staying on the screen surface 611 for too short a time and not having enough time for dehydration.

The base 642 may be a truss structure, and the base 642 further includes another base 641 disposed opposite to the base 642, and the other base 641 and the base 642 are generally an integrated structure. The reference plane of the base 642 may be a horizontal plane.

In another embodiment, the discharge end of the screen surface 611 is at a higher height than the feed end, that is, the screen surface 611 is inclined downward from the discharge end to the feed end, so that the material has a sufficiently long residence time on the screen surface 611, which is suitable for materials with excessive water content, such as mud.

Furthermore, one feeding end of the screen surface 611 is also connected to a first flat plate 619, and the first flat plate 619 is also connected to a third side plate 614 and a fourth side plate 615 on two opposite sides, the third side plate 13 is connected to the first side plate 612, and the fourth side plate 615 is connected to the second side plate 613. The first flat plate 619 is tilted, and an angle f formed by the first flat plate 619 and the reference surface of the base 642 is 20°~45°.

In this embodiment, by setting the angle of the first flat plate 619, the first flat plate 619 has a steeper slope than the screen surface 611, so that the first flat plate 619 is used for feeding, which can speed up the movement of materials from the first flat plate 619 to the screen surface.

Furthermore, a second flat plate 618 for unloading is connected to one end of the screen surface 611 for discharging materials. The second flat plate 618 is tilted, and a fifth side plate 616 and a sixth side plate 617 are respectively provided on two opposite sides of the second flat plate 618. The fifth side plate 616 is connected to the first side plate 612, and the sixth side plate 617 is connected to the second side plate 613.

Among them, the first side plate 612, the second side plate 613, the third side plate 614, the fourth side plate 615, the fifth side plate 616 and the sixth side plate 617 are used to prevent materials from sliding down from the sides and make the vibration dewatering screen have better stability.

Furthermore, a second cross beam 622 is connected between the first side plate 612 and the second side plate 613 to enhance the stability of the screen box 610 .

Among them, the second crossbeam 622 can have the same structure as the first crossbeam 621, and the second crossbeam 622 can also have a different structure from the first crossbeam 621, but the second crossbeam 622 should be arranged parallel to the first crossbeam 621, so that a stable structure is formed between the screen surface 611 connected between the first side plate 612 and the second side plate 613 of the screen box 610, the first crossbeam 621, and the second crossbeam 622, thereby enhancing the stability of the screen box 610.

Furthermore, the support member 640 is disposed on the base 642 , and the support member 640 is a rubber spring.

Among them, the support member 640 has a shock-absorbing function, and the rubber spring has an excellent shock-absorbing effect, a stable structure, and a long service life.

7. The first environmental protection barrel 302 (the second environmental protection barrel 307 and the third environmental protection barrel 312 can be used as reference)

Please refer to FIG. 10a, FIG. 10b and FIG. 10c together. The environmental protection barrel 302 provided in the embodiment of the present invention is used to separate mud and water in the mud-water mixture, wherein the mud is used to burn bricks, and the water is used to re-enter the recycling circulation system, so that the mud-water mixture can be reused to achieve the effect of environmental protection. In this embodiment, the environmental protection barrel 302 includes a first barrel body 710, a second barrel body 720 and a sleeve 730.

Specifically, the first barrel body 710 includes a first circumferential wall 712 and a bottom wall 714. The first circumferential wall 712 is fixedly connected to one end of the first circumferential wall 712. The first barrel body 710 is a barrel-shaped structure with an opening at one end. In one embodiment, the first barrel body 710 is in the shape of a barrel. In other words, the first circumferential wall 712 rotates around the center line to form a cylinder, and the bottom wall 714 is connected to one end of the cylinder to form a barrel with an opening at one end. In other embodiments, the first barrel body 710 can also be a barrel body of other shapes, such as a cuboid. In this embodiment, in order to improve the working efficiency of the environmental protection barrel 302 and increase the amount of mud and water mixture separated at the same time, the volume of the environmental protection barrel 302 is relatively large, and the first barrel body 710 is directly placed on the ground. Specifically, the bottom wall 714 is placed on the ground. In one embodiment, the inner wall surface and the outer wall surface of the first circumferential wall 712 and the inner wall surface and the outer wall surface of the bottom wall 714 are painted to prevent the mud-water mixture in the first barrel body 710 and the external environment (such as rain and sunlight) from corroding the first circumferential wall 712 and the bottom wall 714, thereby improving the service life of the first barrel body 710.

In this embodiment, a second circumferential wall 722 is further provided in the first barrel body 710, one end of the second circumferential wall 722 is fixedly connected to the bottom wall 714, the second circumferential wall 722 and the bottom wall 714 are connected to form a second barrel body 720, and the second barrel body 720 is located in the first barrel body 710. In this embodiment, it can be understood that the second circumferential wall 722 divides the internal space of the first barrel body 710 into two independent parts, wherein the space inside the second circumferential wall 722 and the space between the second circumferential wall 722 and the first circumferential wall 712 are separated by the second circumferential wall 722, and it can also be understood that the bottom wall 714 covers one end of the second circumferential wall 722 to form the second barrel body 720, and the second barrel body 720 is located inside the first barrel body 710. In one embodiment, the second barrel body 720 is in the shape of a barrel, in other words, the second circumferential wall 722 is rotated around the center line to form a cylinder, and the bottom wall 714 is connected to one end of the cylinder to form a barrel with an opening at one end. In other implementations, the second barrel body 720 may also be a barrel body of other shapes, such as a cuboid.

In this embodiment, a sleeve 730 is further provided in the first barrel body 710, which is sleeved outside the second barrel body 720, and a receiving space 740 is formed between the sleeve 730 and the first peripheral wall 712, and a first gap 750 is formed between the sleeve 730 and the second peripheral wall 722. In one embodiment, the sleeve 730 is a cylinder with the same shape as the first peripheral wall 712 and the second peripheral wall 722, and the sleeve 730 is sleeved on the second peripheral wall 722. The sleeve 730 can be fixedly connected to the second peripheral wall 722 through a bracket, and the sleeve 730 can also be fixedly connected to the first peripheral wall 712 through a bracket. In this embodiment, a first gap 750 is formed between the sleeve 730 and the second peripheral wall 722. When the second barrel body 720 is filled with mud and water mixture, the mud and water mixture overflows from the second barrel body 720, flows into the receiving space 740 after passing through the first gap 750, and is precipitated and separated in the receiving space 740.

The arrow shown in Fig. 10b is the flow direction of the mud-water mixture. The mud-water mixture transported to the second barrel 720 is first precipitated in the second barrel 720 to complete the preliminary separation of mud and water. After the mud-water mixture overflows from the second barrel 720, it flows into the receiving space 740 through the first gap 750. The mud is further precipitated in the receiving space 740 and separated from the water. The first gap 750 allows the mud-water mixture to enter the receiving space 740 from the bottom of the receiving space 740, further improving the separation effect of mud and water. The separation effect of mud and water is good, which is conducive to the reuse of mud and water.

In this embodiment, an inclined material inserting tube layer 760 is provided in the receiving space 740, and the inclined material inserting tube layer 760 is used to separate the receiving space 740 into a clean water area 742 and a mud area 744. In one embodiment, the inclined material inserting tube layer 760 is horizontally placed in the middle of the receiving space 740, and the receiving space 740 is divided into a clean water area 742 and a mud area 744, wherein the mud area 744 is close to the bottom wall 714, and the clean water area 742 is close to the opening of the first barrel body 710. Specifically, the inclined material inserting tube layer 760 includes a plurality of hollow tubes interconnected as one, and the hollow tubes are placed obliquely to the bottom wall 714. In one embodiment, the angle between the hollow tube and the horizontal plane is 45°~60°, and the inclined material inserting tube layer 760 plays a filtering role. The water in the mud-water mixture enters the clean water area 742 after passing through the inclined material inserting tube layer 760, and the mud settles in the mud area 744.

In this embodiment, the bottom wall 714 is provided with a first outlet 772, which connects the receiving space 740 with the outside and is used to discharge the mud in the mud area 744. Specifically, the first outlet 772 is connected to the output pipe, and the mud is pumped out from the first outlet 772 by a water pump and sent to the next process.

In this embodiment, a first slope 782 is provided at the connection between the first peripheral wall 712 and the bottom wall 714, a second slope 784 is provided at the connection between the outer wall surface of the second peripheral wall 722 and the bottom wall 714, and the first discharge port 772 is located between the vertical projections of the first slope 782 and the second slope 784 on the bottom wall 714. The first slope 782 and the second slope 784 are used to guide the mud in the mud area 744 to the first discharge port 772. Specifically, the first slope 782 and the second slope 784 form a funnel-like shape at the bottom end of the receiving space 740, and the first discharge port 772 is located at the minimum opening position of the funnel. The mud precipitated downward in the mud area 744 is guided to the first discharge port 772, thereby improving the efficiency of mud discharge.

In this embodiment, the bottom wall 714 is further provided with a second discharge port 774, which connects the interior of the second barrel body 720 with the outside, and is used to discharge the mud in the second barrel body 720. Specifically, the second discharge port 774 is connected to the output pipe, and the mud is pumped out from the second discharge port 774 by a water pump, and the mud is sent to the next process. In this embodiment, the environmental protection barrel 302 separates the mud and water twice, wherein the mud-water mixture inside the second barrel body 720 naturally settles, and the mud is discharged from the second discharge port 774. The mud-water mixture that is not separated in the second barrel body 720 is further separated in the receiving space 740.

In this embodiment, a third slope 786 is provided at the connection between the inner wall surface of the second peripheral wall 722 and the bottom wall 714, and the second discharge outlet 774 is located between the vertical projections of the third slope 786 on the bottom wall 714. The third slope 786 is used to guide the mud in the second barrel body 720 to the second discharge outlet 774. Specifically, the third slope 786 forms a funnel-like shape at the bottom end of the second barrel body 720, and the second discharge outlet 774 is located at the minimum opening position of the funnel, and the mud precipitated downward is guided to the second discharge outlet 774, thereby improving the efficiency of mud discharge.

In this embodiment, the first peripheral wall 712 is provided with a third outlet 76, the position of the third outlet 76 corresponds to the clean water area 742, and the third outlet 76 is used to discharge water from the clean water area 742. Specifically, the third outlet 76 is close to the top of the first peripheral wall 712 to discharge water in the clean water area 742.

In this embodiment, the sleeve 730 includes a first end face 3022 away from the bottom wall 714, and the second barrel body 720 includes a second end face 3021 away from the bottom wall 714. The muddy water mixture in the second barrel body 720 flows into the first gap 750 after overflowing from the opening of the second end face 3021, and the distance between the first end face 3022 and the bottom wall 714 is not less than the distance between the second end face 3021 and the bottom wall 714, so that the muddy water mixture overflowing from the opening of the second end face 3021 all flows into the first gap 750. Specifically, the horizontal position of the first end face 3022 is higher than the horizontal position of the second end face 3021, so as to prevent the muddy water mixture from splashing from the outside of the first gap 750 to the receiving space 740 when overflowing from the opening of the second end face 3021, so that the muddy water mixture overflowing from the opening of the second end face 3021 all passes through the first gap 750 and enters the receiving space 740 from the bottom of the receiving space 740.

In this embodiment, the environmental protection barrel 302 further includes an input pipe 790, which is inserted into the second barrel body 720. Specifically, the input pipe 790 is at least partially inserted into the second barrel body 720 to prevent the muddy water mixture from splashing due to a large flow when it is input into the second barrel body 720.

The mud-water mixture transported to the second barrel body 720 is first precipitated in the second barrel body 720 to complete the preliminary separation of mud and water. After the mud-water mixture overflows from the second barrel body 720, it flows into the receiving space 740 through the first gap 750. The mud is further precipitated in the receiving space 740 and separated from the water. The first gap 750 allows the mud-water mixture to enter the receiving space 740 from the bottom of the receiving space 740, which is conducive to the downward sedimentation of the mud, further improving the separation effect of the mud and water. The good separation effect of the mud and water is conducive to the reuse of the mud and water.

What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of implementing the above-mentioned embodiment and making equivalent changes according to the claims of the present invention still fall within the scope of the invention.

Claims (8)

1. A construction waste treatment system, characterized in that it comprises a coarse sand system, a fine sand system, a mud system and a water circulation system, wherein the coarse sand system is connected to the fine sand system, the fine sand system is connected to the mud system, the water circulation system supplies water to the coarse sand system, the fine sand system and the mud system respectively, the coarse sand system is fed, the mud produced in the process of making coarse sand enters the fine sand system, the mud produced in the process of making fine sand enters the mud system, and the water produced in the process of making mud cake by the mud system enters the water circulation system; The coarse sand system comprises a feeder, a waste separator, a first sand bailer, a crusher, a second sand bailer, a sand screener, a sand washer and a coarse sand dewaterer arranged in sequence, wherein a first water pool is provided at the outlet of the waste separator, a second water pool is provided at the outlet of the crusher, the first sand bailer bailes the sand and gravel separated by the waste separator from the first water pool to the crusher, the second sand bailer bailes the sand and gravel crushed by the crusher from the second water pool to the sand screener, and the coarse sand dewaterer is connected to a first conveyor belt, the first conveyor belt is provided on a bracket, and the first conveyor belt is movably provided on the bracket; The fine sand system comprises a third water pool, a fourth water pool, a fifth water pool, a sixth water pool, a fourth conveyor belt, a fine sand dewatering machine, a fifth conveyor belt, a first cyclone separator and a second cyclone separator. A first water channel is connected between the third water pool and the first water pool, a second water channel is connected between the fourth water pool and the second water pool, and a third water channel is connected between the fifth water pool and the sand washing machine. The third water pool is provided with a first mud pump, which transports the mud in the third water pool to the first cyclone separator. The fine sand separated by the first cyclone separator is transported to the sixth water pool via the fourth conveyor belt. The sixth water pool is provided with a second mud pump, which transports the mud in the sixth water pool to the second cyclone separator. The fine sand separated by the second cyclone separator is dehydrated by the fine sand dewatering machine and then transported away by the fifth conveyor belt connected to the fine sand dewatering machine. Among them, the size range of coarse sand is 0.5mm~8mm, and the size range of fine sand is 0.075mm~0.5mm. 2. The construction waste treatment system as described in claim 1 is characterized in that one end of the first sand bailer is arranged in the first water pool, and the other end of the first sand bailer is raised, so that the first sand bailer has a structure that gradually rises from the waste separator toward the crusher; one end of the second sand bailer is arranged in the second water pool, and the other end of the second sand bailer is raised, so that the second sand bailer has a structure that gradually rises from the crusher toward the sand screening machine; a second conveyor belt is also connected between the sand screening machine and the crusher, and the second conveyor belt transports large particles of sand and gravel produced after screening by the sand screening machine to the crusher for secondary crushing. 3. The construction waste treatment system as described in claim 1 is characterized in that the waste separator is connected to a third conveyor belt, and the waste generated by separating sand and gravel by the waste separator is transported away by the third conveyor belt. 4. The construction waste treatment system as described in claim 1 is characterized in that the fine sand system also includes a third cyclone separator and a fourth cyclone separator, the fourth water tank is provided with a third mud pump, the third mud pump transports the mud in the fourth water tank to the third cyclone separator, the fifth water tank is provided with a fourth mud pump, the fourth mud pump transports the mud in the fifth water tank to the fourth cyclone separator, and the fine sand separated by the third cyclone separator and the fourth cyclone separator is transported to the sixth water tank via the fourth conveyor belt. 5. The construction waste treatment system according to claim 1, characterized in that the first water channel is provided with a screening device for scooping up debris in the first water channel. 6. The construction waste treatment system as described in claim 4 is characterized in that the mud system includes a first environmental protection barrel, a first slurry pump and multiple filter presses, a first mud pipe is connected between the first cyclone separator and the first environmental protection barrel, the mud separated by the first cyclone separator is transported to the first environmental protection barrel for sedimentation through the first mud pipe, the mud precipitated at the bottom of the first environmental protection barrel is transported to the filter press through the first slurry pump, the filter press squeezes the mud to obtain a mud cake, and separates the water in the mud. 7. The construction waste treatment system as described in claim 6 is characterized in that the mud system also includes a second environmental protection barrel, a third environmental protection barrel, a second slurry pump, and a third slurry pump. A second mud pipe is connected between the third cyclone separator and the second environmental protection barrel. The mud separated by the third cyclone separator is transported to the second environmental protection barrel for sedimentation through the second mud pipe, and the mud precipitated at the bottom of the second environmental protection barrel is transported to the filter press through the second slurry pump. A third mud pipe is connected between the fourth cyclone separator and the third environmental protection barrel. The mud separated by the fourth cyclone separator is transported to the third environmental protection barrel for sedimentation through the third mud pipe. A fourth mud pipe is connected between the second cyclone separator and the third environmental protection barrel. The mud separated by the second cyclone separator is transported to the third environmental protection barrel for sedimentation through the fourth mud pipe. The mud precipitated at the bottom of the third environmental protection barrel is transported to the filter press through the third slurry pump. The filter press squeezes the mud to obtain a mud cake and separates water from the mud. 8. The construction waste treatment system as described in claim 7 is characterized in that the water circulation system includes a clean water tank, and the clean water tank is provided with pipes respectively connected to the first water tank, the second water tank, the third water tank, the fourth water tank, the fifth water tank, the sixth water tank, the first environmental protection barrel, the second environmental protection barrel, the third environmental protection barrel and multiple filter presses, and the water separated by the multiple filter presses flows into the clean water tank through the pipes, and the clean water tank supplies water to the first water tank, the second water tank, the third water tank, the fourth water tank, the fifth water tank, the sixth water tank, the first environmental protection barrel, the second environmental protection barrel and the third environmental protection barrel respectively.