CN113318980A

CN113318980A - Silt screening machine and screening process

Info

Publication number: CN113318980A
Application number: CN202110561121.3A
Authority: CN
Inventors: 卢良彬; 连亚晓; 敖建丰
Original assignee: Shenzhen Dongshen Environmental Protection Technology Co ltd
Current assignee: Shenzhen Dongshen Environmental Protection Technology Co ltd
Priority date: 2021-05-22
Filing date: 2021-05-22
Publication date: 2021-08-31
Also published as: WO2022247155A1

Abstract

The invention discloses a silt screening machine and a screening process, which comprise a cylindrical screen mechanism, a horizontal vibrating screen mechanism and a dewatering mechanism which are connected in sequence, wherein a stone crushing mechanism is arranged on the side surface of the horizontal vibrating screen mechanism and is connected with the cylindrical screen mechanism. The silt particle screening machine can gradually screen silt particles and output sands and fine stones meeting requirements, the cylindrical screen mechanism, the horizontal vibrating screen mechanism and the dewatering mechanism are arranged linearly in sequence, the structural layout is compact, the silt particle screening and transporting efficiency is improved, meanwhile, the gravel mechanism is arranged on the side face of the horizontal vibrating screen mechanism, stones output by the cylindrical screen mechanism can be directly transported to the gravel mechanism to be crushed, the flow of forward moving and screening of the silt particles is not influenced, the mechanisms are not influenced mutually, the layout is compact, the space utilization rate is improved, and particularly in a large-scale engineering silt screening environment, the sludge accumulation of the silt particles in the moving and screening process can be reduced.

Description

Silt screening machine and screening process

Technical Field

The invention relates to the field of screening equipment for silt, in particular to a silt screening machine and a screening process.

Background

When earth works are carried out in buildings, tunnels and the like, a foundation or a mountain body needs to be excavated, a large amount of muck is generated during excavation, stones, soil, sand or other sundries with different sizes are usually mixed in the muck, and the conventional method for treating engineering muck is to backfill and bury, so that engineering materials such as stones and sand in the muck cannot be recovered, and waste is caused.

Disclosure of Invention

The invention provides a silt screening machine and a screening process, and aims to solve the problem that sand and stones in silt cannot be screened and wasted due to the fact that existing engineering muck is lack of recovery.

According to the embodiment of the application, a silt particle screening machine is provided, includes: the cylindrical screen mechanism is used for screening the silt slurry into silt water and stones; the horizontal vibrating screen mechanism is used for screening sand and fine stones from the silt water; the dehydration mechanism is used for transporting the sand after dehydration; the stone crushing mechanism is used for crushing stones and outputting stones with preset requirements; the drum screen mechanism, the horizontal vibrating screen mechanism and the dewatering mechanism are sequentially connected, the stone crushing mechanism is arranged on the side face of the horizontal vibrating screen mechanism, and the stone crushing mechanism is connected with the drum screen mechanism.

Preferably, the cylindrical screen mechanism comprises a cylindrical screen and a first collecting pool, and the cylindrical screen is arranged in the first collecting pool; the cylindrical screen comprises a feeding end and a discharging end, and the silt slurry moves from the feeding end to the discharging end in the cylindrical screen; the cylinder screen mechanism comprises a first lifting component, one end of the first lifting component is connected with the first collecting tank, and the other end of the first lifting component is connected with the horizontal vibrating screen mechanism.

Preferably, the horizontal vibrating and screening mechanism comprises a vibrating and screening machine and a second collecting tank, and the vibrating and screening machine is arranged above the second collecting tank; the horizontal vibrating screen mechanism comprises a second material lifting assembly, one end of the second material lifting assembly is connected with the second collecting tank, and the other end of the second material lifting assembly is connected with the dewatering mechanism.

Preferably, the stone crushing mechanism comprises a stone crushing and feeding belt, one end of the stone crushing and feeding belt is connected with the discharge end, and the other end of the stone crushing and feeding belt is connected with the stone stacking area; the conveying direction of the gravel feeding belt is vertical to the direction of the cylindrical screen moving the silt.

Preferably, the first collecting tank comprises a blanking tank and a backflow tank, the blanking tank and the backflow tank are arranged adjacently, a communication passage is arranged between the blanking tank and the backflow tank, and a U-shaped passage is formed among the blanking tank, the communication passage and the backflow tank; the cylinder screen is arranged in the blanking pool, and the backflow pool and the stone breaking mechanism are arranged on the same side.

Preferably, the blanking pool is provided with a water absorption component at the tail end corresponding to the movement direction of the silt in the cylindrical screen, one end of the water absorption component is connected into the blanking pool, and the other end of the water absorption component is connected with the mixing pool; the top of the mixing pool is connected with a water storage component, the bottom of the mixing pool is connected with a filter press, and the filter press is connected with the water storage component; the filter press is arranged on one side, deviating from the horizontal vibrating screen mechanism, of the blanking pool.

Preferably, a feeding channel is arranged between the water storage assembly and the blanking pool, and the filter press, the water storage assembly, the feeding channel and the blanking pool are sequentially arranged and gradually reduced in height.

Preferably, a backflow groove is arranged on the outer side of the blanking pool, one end of the backflow groove is communicated with the blanking pool, and the other end of the backflow groove is connected with the second collecting pool; the backflow groove is formed in one side, deviating from the backflow pool, of the blanking pool.

The invention also provides a silt screening process, which comprises the following steps: step S1: adding water into the residue soil to form a silt slurry; step S2: separating the added silt into silt water and stones, and crushing the stones and then outputting the stones; step S3: separating the silt water into mud water, sand and fine stones, and outputting the fine stones; step S4: immersing the separated sand into water, and outputting the sand after dehydration; and step S5: separating mud and water under high pressure, and outputting water and dehydrated mud.

The silt screening machine and the screening process provided by the invention have the following beneficial effects:

1. the silt screening machine provided by the invention can screen silt gradually and output sand and fine stones meeting requirements, the cylindrical screen mechanism, the horizontal vibrating screen mechanism and the dewatering mechanism are sequentially arranged in a straight line, the structural layout is compact, the silt screening and transporting efficiency is improved, meanwhile, the gravel mechanism is arranged on the side surface of the horizontal vibrating screen mechanism, stones output by the cylindrical screen mechanism can be directly transported to the gravel mechanism for crushing, the flow of forward moving screening of the silt is not influenced, the mechanisms are not influenced mutually, the layout is compact, the space utilization rate is improved, and particularly in a large-scale engineering silt screening environment, the sludge accumulation of the silt in the moving screening process can be reduced.

2. Through setting up drum sieve and first collecting pit to tentatively sieve silt slurry for silt water and coarse stone, be convenient for be used for directly carrying out the breakage with the coarse stone, obtain the building stones that meet the requirements, and based on first carry the silt water in the material subassembly will first collecting pit to continue to get into next process and sieve.

3. The rubble mechanism shifts out the coarse stones of screening output from the vertical direction, namely the silt slurry forms a linear type screening route based on the linear type setting of cylinder screen mechanism, horizontal vibrating screen mechanism and dewatering mechanism, and the rubble mechanism sets up on the side of horizontal vibrating screen mechanism, takes out the coarse stones of screening output from the linear type screening route based on rubble pay-off area, further reduces the occupation of land space of equipment, improves space utilization.

4. The setting up of backward flow pond can avoid the muddy water in the blanking pond to pile up too much and the problem that submerges the drum sieve, increases the filtration bearing capacity of drum sieve mechanism, also lets the muddy water in the blanking pond flow to in the backward flow pond simultaneously, has made things convenient for the user to handle the muddy water in the backward flow pond. The cylinder screen is arranged in the blanking pool, the backflow pool is arranged at the same side as the stone breaking mechanism, and the backflow pool is arranged between the blanking pool and the stone breaking mechanism, so that the screening equipment has a smaller occupied area, and the space utilization rate is improved.

5. The filter press and the water storage assembly are arranged on one side, away from the horizontal vibrating screen mechanism, of the blanking pool, and the water storage assembly is communicated with the notch of the blanking pool, so that recovered clean water can flow in from one side of the notch again, and recovery-output backflow of the clean water is formed, and the recovered clean water is output and used as one of power sources for pushing muck to enter the cylindrical screen, and energy is further saved.

6. The filter press, the water storage component, the feeding channel and the blanking pool are sequentially arranged, a straight line formed by connecting lines of the filter press, the water storage component, the feeding channel and the blanking pool is parallel to a straight line formed by a filtering process of silt slurry, and the heights of the filter press, the water storage component, the feeding channel and the blanking pool are sequentially and gradually reduced, so that after the filter press separates and recovers clear water, the clear water can be discharged into the water storage component by means of gravity, and similarly, after the water storage component outputs clear water based on the operation of a user, the feeding channel can be flushed by means of the formed height difference under the action of gravity, so that the driving force is formed for the muck to enter the cylindrical sieve, and the energy is saved.

7. The backflow groove is communicated with the notch of the blanking pool, enters from the notch, can be mixed with the residue soil to form the silt slurry, improves the efficiency of forming the silt slurry by mixing, and enables the mud water to flow back again to be mixed with the silt slurry.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a silt particle screening machine according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a cylindrical screen in a silt screening machine according to a first embodiment of the invention.

Fig. 3 is a schematic view of a waterway system of a silt particle screening machine according to a first embodiment of the present invention.

Fig. 4 is a flow chart of a silt screening process according to a second embodiment of the present invention.

Description of reference numerals:

100. screening the slurry by a screen;

1. a cylindrical screen mechanism;

11. a cylindrical screen; 111. a feeding end; 112. a discharge end; 113. a barrel; 1131. a moving section; 1132. a screen section; 114. a stirring core;

12. a first collection tank; 121. a blanking pool; 1211. a notch; 1212. a recessed portion; 122. a reflux pool; 123. a communication path; 124. a reflux tank; 125. a filter screen;

13. a first lifting assembly; 131. a conveyor belt; 132. a material lifting hopper; 14. a water absorbing assembly; 15. a filter press; 16. a water storage assembly; 17. a feed channel; 18. a mixing tank;

2. a horizontal vibrating screen mechanism; 21. a vibrating screen machine; 22. a second collection tank; 23. a second lifting assembly;

3. a dewatering mechanism;

4. a stone breaking mechanism; 41. a crushed stone feeding belt; 42. a stone block stacking zone.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1, 2 and 3, a first embodiment of the present invention discloses a silt particle screening machine 100, which includes:

the horizontal vibrating screen comprises a cylindrical screen mechanism 1, a horizontal vibrating screen mechanism 2, a dewatering mechanism 3 and a stone breaking mechanism 4, wherein the cylindrical screen mechanism 1 is used for screening silt slurry into silt water and stones, the horizontal vibrating screen mechanism 2 is used for screening out sand and fine stones from the silt water, the dewatering mechanism 3 is used for conveying out the sand after dewatering, and the stone breaking mechanism 4 is used for outputting stones with preset requirements after breaking the stones. Drum sieve mechanism 1, level are shaken sieve mechanism 2 and dewatering mechanism 3 and are set gradually, rubble mechanism 4 is located the level is shaken sieve mechanism 2 side, rubble mechanism 4 with drum sieve mechanism 1 is connected, drum sieve mechanism 1 with the stone that silt screening was gone out by rubble mechanism 4 shifts out and carries out the rubble operation.

It can be understood that the silt slurry is formed by mixing engineering slag and soil with water, and contains muddy water (soil mixed in water), sand, stones and other impurities, the stones contain coarse stones and fine stones, the fine stones are primarily screened in the cylindrical screen mechanism 1, and the coarse stones need to be crushed by the stone crushing mechanism 4 to form fine stones meeting requirements.

It can be understood that engineering dregs in the mixed water and formation silt slurry gets into drum sieve mechanism 1, the preliminary screening be silt water and stone, silt aquatic contains muddy water and sand, also contains a small amount of fine stone simultaneously, and most stone is directly exported and is removed to rubble mechanism 4, and silt water continues to shake sieve mechanism 2 along moving forward to the level, and the in-process is screened into sand and fine stone, and then the fine stone is direct output, and the sand then gets into dewatering mechanism 3 and carries out output after the drying.

The silt screening machine 100 provided by the invention can screen silt gradually and output sand and fine stones meeting requirements, the cylindrical screen mechanism 1, the horizontal vibrating screen mechanism 2 and the dewatering mechanism 3 are sequentially arranged in a straight line, the structural layout is compact, the silt screening and transporting efficiency is improved, meanwhile, the gravel mechanism is arranged on the side surface of the horizontal vibrating screen mechanism 2, stones output by the cylindrical screen mechanism 1 can be directly transported to the gravel mechanism 4 to be crushed, the flow of moving and screening the silt forward is not influenced, the mechanisms are not mutually influenced, the layout is compact, the space utilization rate is improved, and particularly in a large-scale engineering silt screening environment, the sludge accumulation of the silt in the moving and screening process can be reduced.

Referring to fig. 2, the cylindrical screen mechanism 1 includes a cylindrical screen 11 and a first collecting tank 12, and the cylindrical screen 11 is disposed in the first collecting tank 12. The cylindrical screen 11 comprises a feed end 111 and a discharge end 112, and the slurry moves within the cylindrical screen 11 from the feed end 111 to the discharge end 112. The cylindrical screen mechanism 1 further comprises a first lifting assembly 13, one end of the first lifting assembly 13 is connected with the first collecting tank 12, and the other end of the first lifting assembly 13 is connected with the horizontal vibrating screen mechanism 2. The cylindrical screen 11 comprises a cylinder 113 and a stirring core 114, the stirring core 114 is arranged in the cylinder 113, the stirring core 114 and the cylinder 113 are coaxially arranged, the stirring core 114 is positioned in the cylinder 113 to rotate, and the stirring core 114 rotates to move the slurry from the feeding end 111 to the discharging end 112. The barrel 113 side includes removal section 1131 and screen cloth section 1132, removal section 1131 with screen cloth section 1132 sets gradually on the moving direction of silt particle, and silt particle is in move on the removal section 1131 and get into screen cloth section 1132 is interior to sieve.

The slurry enters the cylinder 113 from the feeding end 111, and is stirred by the rotation of the stirring core 114, so that the silt slurry starts to move from the feeding end 111 to the discharging end 112 while being stirred, sequentially passes through the moving section 1131 and the screen section 1132 in the moving process, the moving section 1131 is a sealing plate structure, the screen section 1132 is provided with screen holes, after the slurry moves along the length of the moving section 1131, the slurry is sufficiently agitated and enters the screen section 1132, and when passing through the screen section 1132, the larger coarse stones in the stone continue to move under the drive of the agitating core 114, while sand and muddy water and some fine stones fall through the screen section 1132 into the first collection tank 12, after passing through the screen segment 1132, the silt slurry is separated into silt water and large-sized stones (coarse stones), the silt water falls into the first collecting tank 12, and the coarse stones are output from the discharge segment 112 and sent to the stone breaking mechanism 4.

It can be understood that, by arranging the cylindrical screen 11, the cylindrical screen 11 drives the sediment slurry to move towards the direction of the discharge end 112 while stirring the sediment slurry based on the rotating stirring core 114, and based on the sealing arrangement of the moving section 1131, the sediment slurry is sufficiently stirred when moving on the moving section 1131, thereby avoiding the dregs which just enter the cylindrical screen 11 from being mixed and sufficiently stirred without water, so that the screening efficiency of the sediment slurry is high, and the screening is more accurate.

It is understood that the stirring core 114 is a spiral stirring core, and the stirring core 114 rotates to stir the slurry and drive the slurry to move, i.e. the stirring and driving effect is simultaneously achieved by the rotation of the spiral structure.

Referring to fig. 2 and fig. 3, the first collecting tank 12 includes a blanking tank 121, a notch 1211 is disposed in a position of the blanking tank 121 corresponding to the feeding end 111, the feeding end 111 of the barrel 113 is disposed in the notch 1211, the notch 1211 is formed by a concave structure at an edge of the blanking tank 121, and the feeding end 111 of the barrel 113 is disposed in the notch 1211.

It can be understood that, by providing the notch 1211, the barrel 113 can sink into the blanking tank 121 based on the notch 1211, so as to reduce the height of the feeding end 111, and avoid the problem of inconvenient feeding caused by an excessively high feeding end 111.

Optionally, as an embodiment, the height of the notch 1211 is half of the height of the feeding end 111, so that the cylinder 113 is partially sunk in the blanking tank 121 and is partially higher than the blanking tank 121, which further facilitates a user to push the slurry into the cylinder 113.

With continuing reference to fig. 2 and 3, the settling pond 121 includes a recess 1212, the length of the recess 1212 is matched with the length of the screen segment 1132, and the silt screened by the screen segment 1132 falls behind into the recess 1212.

It can be understood that by setting up the length of recess 1212 and the length matching of screen segment 1132 for the silt water that falls from screen segment 1132 falls into recess 1212 at first, and because silt water is mixed with sand and fine stone, then sand and fine stone can directly pile up in recess 1212, and the muddy water that is mixed with earth then is located sand and fine stone top because density is lower, is convenient for the user in blanking pond 121 cell-phone sand and fine stone.

It can be understood that, in this embodiment, a plurality of sieve holes (not shown) are opened on the sieve section 1132, and the diameter of each sieve hole is smaller than 10mm, so that the sieve section 1132 separates the stone block into coarse stones and fine stones according to the standard of 10mm, where the coarse stones larger than 10mm are retained in the sieve section 1132 to move continuously, and the fine stones smaller than 10mm fall into the blanking pool 121.

Optionally, as an embodiment, the side surface of the recess 1212 is of an inclined plane structure, so that the side surface of the recess 1212 has a guiding function, when the falling sand and fine stone fall into the recess 1212, the falling sand and fine stone may move under the driving action of the water flow in the blanking pool 121, and when the falling sand and fine stone move to the side surface of the recess 1212, the falling sand and fine stone may fall downwards based on the inclined plane structure, so that more sand and fine stone enter the recess 1212.

With reference to fig. 1 and fig. 2, the first material lifting assembly 13 includes a conveyor belt 131 and a plurality of material lifting hoppers 132, the plurality of material lifting hoppers 132 are sequentially disposed on the conveyor belt 131 at equal intervals, a plurality of water leakage holes (not shown) are disposed on the material lifting hoppers 132, and one end of the conveyor belt 131 is disposed in the recess 1212.

During the use, the lifting hopper 132 enters the concave part 1212 under the drive of the conveyor belt 131, and under the effect of the end part of the conveyor belt 131, the plurality of lifting hoppers 132 are transferred to the other side from one side of the conveyor belt 131, the sand and the fine stones in the concave part 1212 are shoveled by the lifting hoppers 132 in the transfer process, when the lifting hoppers 132 move to the other end (top end) of the conveyor belt 131, the sand and the fine stones are transferred to the opposite side at the top end position again, and when the lifting hoppers 132 turn downwards, the mixture of the sand and the fine stones is poured downwards and then output to the horizontal vibrating screen mechanism 2 to enter the next process equipment.

Optionally, as an embodiment, the number of the conveyor belts 131 is multiple, the plurality of conveyor belts 131 are respectively disposed on two sides of the cylinder 113, specifically, the number of the conveyor belts 131 is four, and the conveyor belts 131 are symmetrically disposed on two side surfaces of the cylinder 113 in the moving direction of the mud slurry, and the conveyor belts 131 are close to one end surface of the cylinder in the moving direction of the mud slurry, so that more conveyor belts 131 can be disposed on two sides of the cylinder 113 to convey sand and fine stones sinking into the recess 1212.

With reference to fig. 1, the horizontal vibrating and screening mechanism 2 includes a vibrating and screening machine 21 and a second collecting tank 22, and the vibrating and screening machine 21 is disposed above the second collecting tank 22. The horizontal vibrating screen mechanism 2 comprises a second material lifting assembly 23, one end of the second material lifting assembly 23 is connected with the second collecting tank 22, and the other end of the second material lifting assembly 23 is connected with the dewatering mechanism 3. The sieving machine 21 is arranged through multi-layer sieving, the mixed materials of the sand and the fine stones moved by the first material lifting component 13 are sequentially sieved, the sand and the fine stones are separated, and the sand falls into the second collecting tank 22 again under the vibration moving action of the sieving machine 21.

It can be understood that the vibrating sieving machine 21 moves the separated sand and fine stones forward at two different positions by a vibration mode, the sand moves and falls into the second collecting tank 22 for secondary sand washing, the sand in the second collecting tank 22 is moved to the dewatering mechanism 3 by the second material lifting assembly 23, and the fine stones are output by a designated conveying mechanism.

It can be understood that the output fine stones can be directly output without entering the stone breaking mechanism 4 for breaking treatment due to the small volume.

It will be appreciated that the second lifting assembly 23 is identical in construction to the first lifting assembly 13 in that a conveyor 131 and a lifting hopper 132 are provided to move sand in the water through the lifting hopper 132 to the next process.

Referring to fig. 3, a backflow groove 124 is disposed outside the blanking pool 121, one end of the backflow groove 124 is communicated with the blanking pool 121, and the other end of the backflow groove 124 is connected to the second collection pool 22, so that the water stored in the second collection pool 22 can flow back into the blanking pool 121 again based on the backflow groove 124, and further recycling of the water is achieved, and energy is saved.

It can be understood that the second collecting tank 22 is used for washing sand, and based on the transportation of the first lifting assembly 13, a part of muddy water or clean water which has not run dry enters the second collecting tank 22, so that the water level in the second collecting tank 22 is increased continuously, and the backflow groove 124 is added, so that more water than a preset volume can flow back to the blanking tank 121 (as shown by the flow direction formed by the arrow b in fig. 3), and be further recycled as water resource.

Referring to fig. 1, after receiving the sand from the material lifting hopper 132, the dewatering mechanism 3 dewaters the sand by vibration, and the sand is discharged after being dewatered and dried by the dewatering mechanism 3.

With continued reference to fig. 1, the rock breaking mechanism 4 includes a rock feeding belt 41, one end of the rock feeding belt 41 is connected to the discharge end 112, and the other end is connected to the rock piling zone 42. The conveying direction of the gravel feeding belt 41 is perpendicular to the direction of the movement of the silt slurry of the cylindrical screen 11, and the gravel feeding belt 41 transfers coarse stones (stones larger than 10 mm) output by screening in the cylindrical screen 11 to the stone piling zone 42.

It can be understood that the rubble mechanism 4 moves the coarse stones output by screening out from the vertical direction, that is, the mud slurry forms a linear screening route based on the linear arrangement of the cylindrical screen mechanism 1, the horizontal vibrating screen mechanism 2 and the dewatering mechanism 3, the rubble mechanism 4 is arranged on the side surface of the horizontal vibrating screen mechanism 2, the coarse stones output by screening are taken out from the linear screening route based on the rubble feeding belt 41, the occupied space of the equipment is further reduced, and the space utilization rate is improved.

It can be understood that a gravel room is provided at one side of the stone block stacking area 42, and the user can output stones meeting the requirements by throwing the stacked coarse stones into the gravel room for crushing treatment.

Referring to fig. 2 and fig. 3, the first collecting tank 12 further includes a backflow tank 122, the blanking tank 121 and the backflow tank 122 are disposed adjacent to each other, a communication path 123 is disposed between the blanking tank 121 and the backflow tank 122, and a "U" shaped path (as shown by the flow direction formed by the arrow a in fig. 3) is formed among the blanking tank 121, the communication path 123 and the backflow tank 122.

It can be understood that the external clean water flows into the feeding end 111 of the cylindrical screen 11 from the gap 1211, the clean water is mixed with the dregs to form a slurry through the stirring of the stirring core 114, the slurry falls into the blanking pool 121 through the screen segment 1132, a part of the slurry in the blanking pool 121 flows back to the return pool 122 through the communication channel 123, the return pool 122 sinks the slurry into the bottom of the return pool 122 through sedimentation, and the clean water continues to flow.

It can be understood that the arrangement of the backflow pool 122 can avoid the problem that the muddy water in the blanking pool 121 is excessively accumulated and overflows the cylindrical screen 11, increase the filtering bearing capacity of the cylindrical screen mechanism 1, and meanwhile, the muddy water in the blanking pool 121 flows into the backflow pool 122, so that the user can conveniently treat the muddy water in the backflow pool 122.

With continuing to refer to fig. 1 and fig. 3, the cylindrical screen 11 is disposed in the blanking tank 121, the backflow tank 122 is disposed on the same side as the rock breaking mechanism 4, and the backflow tank 122 is disposed between the blanking tank 121 and the rock breaking mechanism 4, so that the screening device has a smaller floor area and improves the space utilization rate.

Optionally, as an embodiment, one end of the return pool 122, which is away from the communication path 123, is communicated with the notch 1211, so that the muddy water flows into the return pool 121 again through the notch 1211 after flowing from the blanking pool 121 to the return pool 122, thereby forming a return effect, and meanwhile, the muddy water can also be used as a driving force for pushing the muck into the cylindrical screen 11 based on the flowing water impact force of the return pool 122, so as to improve the muck pushing efficiency and save energy.

Optionally, as another embodiment, a filter screen 125 is disposed at one end of the backflow tank 122 close to the communication path 123, and the filter screen 125 is erected at an inlet of the backflow tank 122, so that the muddy water drifting from the blanking tank 121 is filtered by the filter screen 125 before entering the backflow tank 122, and part of stones and floating impurities are blocked by the filter screen 125, so that the muddy water flowing into the backflow tank 122 has lower impurities, and the filtering efficiency is improved.

It can be understood that in the engineering dregs that the earthwork operation produced, except having engineering reuse's sand, stone, mud and water, still can have domestic industry rubbish such as plastics, foam, industrial rubbish when falling into blanking pond 121, can float in the surface of water, get into backward flow pond 122 based on the rivers flow direction, then can shelter from and pile up on filter screen 125 by filter screen 125 this moment, improved the filtration efficiency of muddy water, the user of also being convenient for simultaneously collects and clears up rubbish impurity in filter screen 125 position. Further, the filter screen 125 is disposed in the water flow direction, and the driving effect of the water flow is utilized to filter the garbage impurities, so that the energy is further saved.

Optionally, as another embodiment, the depth of the backflow pool 122 is smaller than the depth of the blanking pool 121, so that the depth of the backflow pool 122 is higher than the depth of the blanking pool 121.

Referring to fig. 3, a water absorbing assembly 14 is disposed at an end of the blanking pool 121 away from the notch 1211, one end of the water absorbing assembly 14 is connected to the blanking pool 121, the other end is connected to a mixing pool 18, and the mixing pool 18 is used for settling clean water and mud.

The top of the mixing tank 18 is connected with a water storage assembly 16, the bottom of the mixing tank is connected with a filter press 15, the filter press 15 is connected with the water storage assembly 16, and the water absorption assembly 14 absorbs the muddy water in the blanking tank 121 into the mixing tank 18.

It is understood that the water absorption assembly 14 includes a centrifugal pump, which is a pump for conveying liquid by the centrifugal force generated when the impeller rotates, so as to pump out the mud water in the blanking tank 121 and convey the mud water into the filter press 15, the filter press 15 pressurizes the mud water, so that the mud and the water are separated, and dry mud and clean water are obtained, and the obtained clean water is output to the water storage assembly 16 for storage (as shown in the flow direction f in fig. 3) so as to recycle the water energy.

It will be appreciated that the centrifugal pump is mixed with sand when pumping out the slurry, and the slurry mixed with sand is first fed into a cyclone (not shown) by the centrifugal pump, and then the sand with higher gravity falls back into the blanking pool 121 by the characteristics of the cyclone, and the slurry is pumped out by the centrifugal pump.

It will be appreciated that the water intake assembly 14 pumps the muddy water into the mixing tank 18, the muddy water is first added with the flocculant before entering the mixing tank 18, the flocculant can settle the mud mixed in the muddy water at the bottom of the clear water, after the flocculant is mixed, the muddy water enters the mixing tank 18 to settle, the mud settles at the bottom of the mixing tank 18, the clear water is located at the upper part of the mixing tank 18, the mixing tank 18 can move the clear water into the water storage assembly 16 (e and f directions in fig. 3), and the mud at the bottom is moved into the filter press 15 (d direction in fig. 3).

The filter press 15 and the water storage assembly 16 are disposed on a side of the blanking pool 121 away from the horizontal vibrating screen mechanism 2, and the water storage assembly 16 is communicated with the notch of the blanking pool 121, so that the recovered clean water can flow in the notch 1211 again to form a recovery-output backflow of the clean water (such as a flow direction formed by an arrow c in fig. 3), so that the recovered clean water is output and used as one of power sources for pushing the muck to enter the cylindrical screen 11, and energy is further saved.

Optionally, as an embodiment, a feeding channel 17 is disposed between the water storage assembly 16 and the blanking tank 121, and the filter press 15, the water storage assembly 16, the feeding channel 17, and the blanking tank 121 are sequentially disposed, and the heights of the filter press, the water storage assembly 16, the feeding channel 17, and the blanking tank 121 are gradually reduced.

It can be understood that the feeding channel 17 is a space for placing engineering muck and is connected with the feeding end 111 of the blanking pool 121, the water storage assembly 16 outputs recycled clean water and then enters the feeding channel 17 to serve as one of power sources for pushing muck, meanwhile, the clean water can be mixed when the muck is washed, and part of muck is mixed to form silt, so that the stirring efficiency is improved.

It can be understood that the filter press 15, the water storage assembly 16, the feeding channel 17 and the blanking tank 121 are sequentially arranged, a straight line formed by connecting lines of the filter press 15, the water storage assembly 16, the feeding channel 17 and the blanking tank 121 is parallel to a straight line formed by a filtering process of silt slurry, and the heights of the filter press 15, the water storage assembly 16, the feeding channel 17 and the blanking tank 121 are sequentially and gradually reduced, so that after the filter press 15 separates and recovers clean water, the clean water can be discharged into the water storage assembly 16 by means of gravity, and meanwhile, after the water storage assembly 16 outputs the clean water based on the operation of a user, the feeding channel 17 can be flushed by means of the formed height difference under the action of gravity, so that a driving force is formed for the muck to enter the cylindrical sieve 11, and energy is saved.

Optionally, as an embodiment, the backflow tank 122 is communicated with the feeding channel 17, so that the muddy water in the backflow tank 122 enters the feeding channel 17 to form a flowing water loop (as shown in a direction in fig. 3).

The backflow groove 124 is formed in one side, away from the backflow pool 122, of the blanking pool 121, so that a surrounding waterway system is formed by taking the blanking pool 121 as a center, and the utilization rate of a space is improved.

Optionally, as another embodiment, the backflow tank 124 is communicated with the notch 1211 of the blanking tank 121, and the sludge entering from the notch 1211 can be mixed with the dregs to form the silt slurry, so as to improve the efficiency of forming the silt slurry, and the silt slurry flows back again to be mixed with the silt slurry.

Referring to fig. 4, a second embodiment of the present invention provides a silt screening process, which uses the silt screening machine 1 provided in the first embodiment, including the following steps:

step S1: adding water into the residue soil to form a slurry.

Step S2: separating the added silt into silt water and stones, and crushing the stones and then outputting the stones.

Step S3: separating the silt water into muddy water, sand and fine stones, and outputting the fine stones.

Step S4: and (4) immersing the separated sand into water, and outputting the sand after dehydration. And

step S5: separating mud and water under high pressure, and outputting water and dehydrated mud.

It will be appreciated that in step S1, the muck is mixed with water and stirred in the cylindrical screen 11 to be thoroughly mixed with water to form a slurry.

It is understood that in step S2, the slurry is primarily screened into muddy water (mixture of sand, mud and water), stone blocks (coarse and fine stones), and the coarse stones are crushed by the stone crusher 4 to output stone materials meeting the requirements.

It is understood that in step S3, the silt water is further sieved to obtain mud water (mixture of mud and water), sand and fine stones, and the fine stones are directly output.

It is understood that in step S4, the separated sand is immersed in water to wash the sand, and enters the dewatering mechanism 3 for dewatering and outputting.

It will be appreciated that in step S5, the mud and water are separated by the pressure of the filter press 15.

The silt screening process provided by the method can screen out sand, mud, stones and water from the waste silt generated by earthwork operation respectively, the sand and the stones can be used as building raw materials for secondary utilization, the mud can be used as raw materials for firing bricks in brickyards, secondary recycling of the waste silt generated by earthwork operation is achieved, the utilization rate of energy is improved, and waste is avoided.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A mud and sand slurry screening machine is characterized by comprising:

the cylindrical screen mechanism is used for screening the silt slurry into silt water and stones;

the horizontal vibrating screen mechanism is used for screening sand and fine stones from the silt water;

the dehydration mechanism is used for transporting the sand after dehydration;

the stone crushing mechanism is used for crushing stones and outputting stones with preset requirements;

the drum screen mechanism, the horizontal vibrating screen mechanism and the dewatering mechanism are sequentially connected, the stone crushing mechanism is arranged on the side face of the horizontal vibrating screen mechanism, and the stone crushing mechanism is connected with the drum screen mechanism.

2. The mud screening machine as set forth in claim 1, wherein: the cylindrical screen mechanism comprises a cylindrical screen and a first collecting tank, and the cylindrical screen is arranged in the first collecting tank;

the cylindrical screen comprises a feeding end and a discharging end, and the silt slurry moves from the feeding end to the discharging end in the cylindrical screen;

the cylinder screen mechanism comprises a first lifting component, one end of the first lifting component is connected with the first collecting tank, and the other end of the first lifting component is connected with the horizontal vibrating screen mechanism.

3. The mud screening machine as set forth in claim 2, wherein: the horizontal vibrating and screening mechanism comprises a vibrating and screening machine and a second collecting tank, and the vibrating and screening machine is arranged above the second collecting tank;

the horizontal vibrating screen mechanism comprises a second material lifting assembly, one end of the second material lifting assembly is connected with the second collecting tank, and the other end of the second material lifting assembly is connected with the dewatering mechanism.

4. The mud screening machine as set forth in claim 2, wherein: the stone crushing mechanism comprises a stone crushing and feeding belt, one end of the stone crushing and feeding belt is connected with the discharge end, and the other end of the stone crushing and feeding belt is connected with the stone stacking area;

the conveying direction of the gravel feeding belt is vertical to the direction of the cylindrical screen moving the silt.

5. The mud screening machine as set forth in claim 3, wherein: the first collecting tank comprises a blanking tank and a backflow tank, the blanking tank and the backflow tank are arranged adjacently, a communication passage is arranged between the blanking tank and the backflow tank, and a U-shaped passage is formed among the blanking tank, the communication passage and the backflow tank;

the cylinder screen is arranged in the blanking pool, and the backflow pool and the stone breaking mechanism are arranged on the same side.

6. The mud screening machine as set forth in claim 5, wherein: the blanking pool is provided with a water absorption component at the tail end corresponding to the movement direction of the silt in the cylindrical screen, one end of the water absorption component is connected into the blanking pool, and the other end of the water absorption component is connected with the mixing pool;

the top of the mixing pool is connected with a water storage component, the bottom of the mixing pool is connected with a filter press, and the filter press is connected with the water storage component;

the filter press is arranged on one side, deviating from the horizontal vibrating screen mechanism, of the blanking pool.

7. The mud screening machine as set forth in claim 6, wherein: and a feeding channel is arranged between the water storage assembly and the blanking pool, and the filter press, the water storage assembly, the feeding channel and the blanking pool are sequentially arranged and gradually reduced in height.

8. The mud screening machine as set forth in claim 5, wherein: a backflow groove is formed in the outer side of the blanking pool, one end of the backflow groove is communicated with the blanking pool, and the other end of the backflow groove is connected with the second collecting pool;

the backflow groove is formed in one side, deviating from the backflow pool, of the blanking pool.

9. A silt screening process is characterized in that: the method comprises the following steps:

step S1: adding water into the residue soil to form a silt slurry;

step S2: separating the added silt into silt water and stones, and crushing the stones and then outputting the stones;

step S3: separating the silt water into mud water, sand and fine stones, and outputting the fine stones;

step S4: immersing the separated sand into water, and outputting the sand after dehydration; and