Multi-source fluid-filled mud preparation station and method of using same

Abstract

The application discloses a multi-source fluid-filled slurry preparation station for preparing fluid-filled slurry, which comprises a double-impact crusher, a feeding device, a submerged spiral rolling screen, a vibrating screen, a fine slurry recovery component, a rear-end mixer, a medicament tank and a slurry pumping pump; the submerged spiral rolling screen is in the shape of a rolling screen cylinder and is horizontally arranged, and the lower part of the submerged spiral rolling screen is submerged in an inner layer cleaning liquid; the inner layer cleaning liquid is located in a rolling screen hopper which is also used for slurry deposition; an intermediate slurry collecting hopper is arranged outside the rolling screen hopper; an overflow water supply tank is arranged outside the intermediate slurry collecting hopper; and the bottom of the intermediate slurry collecting hopper penetrates through the overflow water supply tank. The application further discloses a use method of the multi-source fluid-filled slurry preparation station, which comprises a crushing and refining method, a screening method and a mixing method. Compared with the prior art, the application can greatly improve the utilization rate of the sludge and improve the operation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of fluidized solidified soil preparation technology, and particularly relates to a multi-source fluid-filled mud preparation station and its usage method. Background Technology

[0002] In the production process of fluidized solidified soil, it is necessary to mix the prepared fluidized clay slurry with admixtures to form a usable fluidized solidified soil slurry of a certain concentration.

[0003] In the prior art, a fluidized solidified soil preparation device is disclosed. This device first uses a crushing device to refine the slag and soil, then uses a screening component to screen out the slag and soil main material that meets the particle size requirements by a vibrating screen, and then sends it to the rear-end agitator component; finally, water is added and mixed to form a slurry. The agitator component is a single-layer or double-layer long-arm dry blade mixer.

[0004] The shortcomings of existing technology are that the device cannot fully convert the sticky granules in the slag into slurry, resulting in low slag utilization. Furthermore, the use of single- or double-layer long-arm dry blade mixers leads to long mixing times and low efficiency at the rear end.

[0005] Therefore, it is necessary to provide a new multi-source fluid-filled mud preparation station and its usage method to solve the above-mentioned technical problems. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] Based on this, the present invention provides an active belt conveyor for rapid dispensing of viscous materials, which aims to solve the technical problems of low utilization rate of slag and soil and long mixing time in existing fluidized solidified soil preparation devices.

[0008] (II) Technical Solution

[0009] To address the aforementioned technical problems, this invention proposes a multi-source fluid-filled mud preparation station for preparing fluidized mud. The multi-source fluid-filled mud preparation station includes: a double-stage fine crusher, a feeding device, a submerged spiral roller screen, a vibrating screen, a fine mud recovery component, a rear-end mixer, a reagent tank, and a slurry pump. The submerged spiral roller screen is cylindrical in shape and is arranged horizontally. The lower part of the submerged spiral roller screen is submerged in an inner cleaning fluid located in a screen funnel. The screen funnel is also used for mud sedimentation. An intermediate slurry collection hopper is located outside the screen funnel, and an overflow water supply tank is located outside the intermediate slurry collection hopper. The bottom of the intermediate slurry collection hopper penetrates the overflow water supply tank. The screen funnel is integrally formed... The vibrating screen is a bucket-shaped structure with sieve holes and is connected to the rotary screen funnel. The double-blow crusher is used to crush the original slag and obtain refined slag. The feeding device is used to transport the refined slag to the submerged spiral rotary screen. The submerged spiral rotary screen is used to achieve mud-solid separation of the refined slag. The vibrating screen is used to transmit vibration power to the rotary screen funnel. The fine mud recovery component is used to transport the mud in the rotary screen funnel to the submerged spiral rotary screen. The slurry pump is used to recover the mud in the intermediate slurry collection hopper to the rear mixer. The reagent tank is used to add admixtures to the rear mixer. The rear mixer is used to mix the mud and admixtures therein to obtain the fluidized filling mud.

[0010] Preferably, the feeding device includes a feeding hopper and an electromagnetic feeder, and the two ends of the submerged spiral roller screen are the feed inlet and the slag outlet, respectively; the output ends of the feeder and the fine mud recovery system are respectively connected to the feed inlet; the input end of the fine mud recovery system is connected to the bottom of the roller screen funnel; the inner cleaning fluid is tap water or groundwater.

[0011] Preferably, the multi-source fluid-filled mud preparation station further includes a feed pump, the input end of which is connected to the bottom of the rear mixer, and a screen flushing system for flushing the submerged spiral roller screen is arranged at the bottom of the submerged spiral roller screen.

[0012] Preferably, the fine slurry recovery system includes a hydrocyclone and a hydrocyclone power pump connected together. The hydrocyclone includes an overflow pipe, the output end of which extends into the submerged spiral cyclone screen through the feed port. The input end of the hydrocyclone power pump is connected to the screen funnel.

[0013] Preferably, 1 / 4 to 1 / 2 of the depth of the submerged spiral roller screen is submerged in the inner cleaning solution.

[0014] Preferably, the multi-source fluid filling mud preparation station further includes a water level balancing pump, the inlet of which is located at the bottom of the overflow water supply tank, and the outlet of which is located at the top of the intermediate slurry collection hopper.

[0015] Preferably, the sieve holes are located on the side wall of the rotary screen funnel, and the sieve holes are vertically arranged strip-shaped through holes, the width of which is equal to a preset width.

[0016] Preferably, the submerged spiral roller screen includes a feed cylinder, a screen cylinder, and a discharge cylinder connected in sequence, and the inner wall of the submerged spiral roller screen is provided with spiral conveying blades for material transfer.

[0017] Preferably, the overflow water tank contains an outer layer of cleaning fluid; the rotary screen flushing system includes a suction pipe and a slurry flushing assembly, the slurry flushing assembly being located below the surface of the inner layer of cleaning fluid, the slurry flushing assembly including a flushing power pump, a slurry suction device, and a turbulent flow nozzle connected in sequence via pipes; the flushing power pump includes a pump inlet and a pump outlet, one end of the suction pipe is connected to the outer layer of cleaning fluid, and the other end of the suction pipe is connected to the pump inlet; wherein: the slurry suction device includes a clear liquid inlet, a mud suction port, and a slurry-water mixing outlet connected in series, the clear liquid inlet being connected to the pump outlet for sucking in the outer layer of cleaning fluid, the mud suction port facing the rotary screen cylinder for sucking in mud, the slurry-water mixing outlet for discharging the mixture of the outer layer of cleaning fluid and mud, and the slurry-water mixing outlet being connected to the inlet of the turbulent flow nozzle, the outlet of the turbulent flow nozzle facing the rotary screen cylinder.

[0018] This invention also discloses a method for using the multi-source fluid-filled mud preparation station described above, including: a crushing and refining method, a screening method, and a mixing method; the crushing and refining method is as follows: the original slag is crushed and refined by the double-crusher to obtain refined slag, the refined slag enters the feed hopper and is fed into the submerged spiral roller screen by the feeder; the screening method is as follows: the submerged spiral roller screen screens the refined slag to obtain a mixture of solid slag and mud after primary separation; the roller screen flushing system flushes the submerged spiral roller screen, and the roller screen flushing system also flushes the mud after primary separation. After selection, the mud is pumped and separated to the submerged spiral roller screen and deposited in the roller screen funnel. Under the action of the vibrating screen, the mud with a particle size smaller than the preset width in the mud after the first separation enters the intermediate collection hopper to achieve the first separation. The remaining part is extracted and recovered by the fine mud recovery system and returned to the submerged spiral roller screen for washing and separation again. Then, it is separated a second time by the roller screen funnel, and finally the concentrated mud is deposited in the intermediate collection hopper. The mixing method is as follows: the concentrated mud that reaches the preset qualified concentration value is pumped to the rear mixer and mixed with the admixture to obtain the fluidized filling mud.

[0019] (III) Beneficial Effects

[0020] The multi-source fluid-filled slurry preparation station of this invention meets the needs of practical production applications. This invention is a stable and efficient multi-source slag soil preparation equipment for producing fluidized solidified soil. It can perform initial and deep processing of multi-source slag soil and directly produce finished fluidized solidified soil slurry. Using the multi-source fluid-filled slurry preparation station of this invention, fluidized filling slurry can be prepared from various types of slag soil, resulting in high-quality products with good continuity. The multi-source fluid-filled slurry preparation station of this invention has the advantages of high slag soil utilization and high processing efficiency, and can also control the particle content and particle size of the processed slag soil according to engineering needs. The fluidized filling slurry produced using the multi-source fluid-filled slurry preparation station of this invention is used to produce fluidized solidified soil. The original slag soil can be low-moisture slag soil with high clay content, or it can be cohesive slag soil with high moisture content.

[0021] Compared with existing technologies, the use of this invention can greatly improve the utilization rate of construction waste and increase operational efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic front view of the overall structure of the multi-source fluid-filled mud preparation station of the present invention;

[0024] Figure 2 This is a partial structural diagram of the multi-source fluid-filled mud preparation station of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the submerged spiral rotary screen and the rotary screen flushing and suction system in this invention;

[0026] Figure 4 This is a schematic diagram of the slurry suction and flushing assembly in this invention.

[0027] Figure 5 This is a schematic diagram of the structure of the suction device and related mechanisms in this invention;

[0028] Figure 6 This is a schematic diagram of the turbulence punch in this invention;

[0029] Figure 7 This is a schematic diagram (top view) showing the angle between the injection direction of the turbulent punch and the vertical symmetry plane of the rotary screen in this invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Double-sided fine crusher; 2. Feed hopper; 3. Electromagnetic feeder; 4. Submerged spiral rotary screen; 5. Slag outlet; 6. Vibrating screen; 7. Hydrocyclone; 8. Hydrocyclone power pump; 9. Chemical tank; 10. Feed pump; 11. Rear mixer; 12. Slurry pump; 13. Rotary screen funnel; 14. Intermediate slurry collection hopper; 15. Overflow water supply tank; 16. Water level balancing pump; 17. Rotary screen flushing and suction system;

[0032] 01. Feed cylinder; 02. Rotary screen cylinder; 03. Discharge cylinder; 05. Material conveying blades; 010. Liquid extraction pipe; 011. Flushing power pump; 012. Slurry suction device; 013. Turbulent flow punch; 014. Mounting plate;

[0033] 021. Vertical symmetry plane of the rotary screen;

[0034] 111. Pump inlet; 112. Pump outlet;

[0035] 121. Low-flow-rate fluid; 122. Mixed-flow-rate fluid; 123. First mixing chamber; 124. Mounting flange;

[0036] 141. Mounting holes;

[0037] 1211, First suction hole; 1212, Second suction hole; 1213, Install ring plate;

[0038] 1221, First mixing orifice; 1222, Second mixing orifice; 1223, Third mixing orifice; 1224, Fourth mixing orifice; 1225, Clear liquid inlet;

[0039] 12111, Mud Suction Port;

[0040] 12131. Liquid passage hole;

[0041] 12241, Slurry mixing outlet. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] The following is in conjunction with the appendix Figure 1-7 The multi-source fluid-filled mud preparation station and its usage method of the present invention will be further described.

[0044] Please refer to this carefully. Figure 1This invention provides a multi-source fluid-filled mud preparation station for preparing fluid-filled mud. The multi-source fluid-filled mud preparation station includes: a double-stage fine crusher 1, a feeding device, a submerged spiral roller screen 4, a vibrating screen 6, a fine mud recovery component, a rear-end mixer 11, a reagent tank 9, and a slurry pump 12. The submerged spiral roller screen 4 is cylindrical in shape and is arranged horizontally. The lower part of the submerged spiral roller screen 4 is submerged in an inner cleaning liquid, which is located in a roller screen funnel 13. The roller screen funnel 13 is also used for mud deposition. An intermediate slurry collection hopper 14 is provided on the outside of the roller screen funnel 13, and an overflow water supply tank 15 is provided on the outside of the intermediate slurry collection hopper 14. The bottom of the intermediate slurry collection hopper 14 passes through the overflow water supply tank 15. The rotary screen funnel 13 is shaped like a bucket with screen holes. The vibrating screen 6 is connected to the rotary screen funnel 13. The double-crusher 1 is used to crush the original slag and obtain refined slag. The feeding device is used to transport the refined slag to the submerged spiral rotary screen 4. The submerged spiral rotary screen 4 is used to realize the mud-solid separation of the refined slag. The vibrating screen 6 is used to transmit the vibration power to the rotary screen funnel 13. The fine mud recovery component is used to transport the mud in the rotary screen funnel 13 to the submerged spiral rotary screen 4. The slurry pump 12 is used to recover the mud in the intermediate slurry collection hopper 14 to the rear mixer 11. The reagent tank 9 is used to add admixtures to the rear mixer 11. The rear mixer 11 is used to mix the mud and admixtures inside it to obtain fluidized filling mud.

[0045] More specifically, the main body of the vibrating screen 6 is located outside the overflow water supply tank 15; the submerged spiral roller screen 4 is installed above the roller screen funnel 13; the lower part of the intermediate slurry collection hopper 14 is connected to the slurry pump 12. The outlet of the slurry pump 12 is connected to the top of the rear mixer 11.

[0046] In this embodiment, the vibrating screen 6 vibrates the roller screen funnel 13, which facilitates the filtration of mud with a particle size smaller than the width of the screen holes into the intermediate slurry collection hopper 14 below.

[0047] According to a specific embodiment of the present invention, the feeding device includes a feeding hopper 2 and an electromagnetic feeder 3. The two ends of the submerged spiral roller screen 4 are the feed inlet and the slag outlet 5, respectively. The output ends of the feeder and the fine mud recovery system are respectively connected to the feed inlet. The input end of the fine mud recovery system is connected to the bottom of the roller screen funnel 13. The inner cleaning liquid is tap water or groundwater.

[0048] According to a specific embodiment of the present invention, the multi-source fluid filling mud preparation station also includes a feed pump 10, the input end of which is connected to the bottom of the rear mixer 11, and a screen flushing system 17 for flushing the submerged spiral roller screen 4 is arranged at the bottom of the submerged spiral roller screen 4.

[0049] According to a specific embodiment of the present invention, the fine slurry recovery system includes a hydrocyclone 7 and a hydrocyclone power pump 8 connected together. The hydrocyclone 7 includes an overflow pipe, the output end of which extends into the submerged spiral vortex screen 4 through the feed inlet. The input end of the hydrocyclone power pump 8 is connected to the vortex screen funnel 13.

[0050] In this embodiment, the double-click fine crusher 1 is connected to the feed hopper 2, the electromagnetic feeder 3 is installed below the feed hopper 2, and the overflow pipe of the hydrocyclone 7 (output end of the fine mud recovery system) and the output end of the electromagnetic feeder 3 extend into the submerged spiral roller screen 4 in parallel.

[0051] According to a specific embodiment of the present invention, 1 / 4 to 1 / 2 of the depth of the submerged spiral roller screen 4 is submerged in the inner cleaning solution.

[0052] Preferably, one-third of the depth of the submerged spiral roller screen is submerged in the inner cleaning solution.

[0053] In this embodiment, this structure is used to improve the screening and washing effect.

[0054] According to a specific embodiment of the present invention, the multi-source fluid filling mud preparation station further includes a water level balancing pump 16, the inlet of which is located at the bottom of the overflow water supply tank 15, and the outlet of which is located at the top of the intermediate slurry collection hopper 14.

[0055] According to a specific embodiment of the present invention, the sieve holes are located on the side wall of the rotary screen funnel 13, and the sieve holes are vertically arranged strip-shaped through holes, the width of which is equal to a preset width.

[0056] More specifically, the preset width is 2mm. In this embodiment, this structure can filter out slurry with a particle size of less than 2mm, while materials with a particle size greater than 2mm remain in the rotary screen funnel 13 and are recycled back to the submerged spiral rotary screen 4 by the fine slurry recovery system for re-washing and sorting. In actual implementation, the preset width can be selected according to project needs to control the particle size of the slurry entering the intermediate collection hopper 14.

[0057] The multi-source fluid-filled mud preparation station described above is a complete set of equipment for the rapid resource utilization of engineering waste on-site. During operation, the raw waste is crushed and refined by a double-crusher 1, then fed into a feed hopper 2 and via an electromagnetic feeder 3 into a submerged spiral roller screen 4. The refined waste is screened by the submerged spiral roller screen 4. Simultaneously, the roller screen flushing and suction system 17 at the bottom of the screen can flush the submerged spiral roller screen 4 and extract and separate the mud within it. The submerged spiral roller screen 4 has a roller screen funnel 13, an intermediate slurry collection hopper 14, and an overflow water supply tank 15. A vibrating screen 6, a hydrocyclone 7, and a hydrocyclone power pump 8 form a fine mud recovery system, which can further separate the mud in the roller screen funnel 13, improving the utilization rate of the waste, separating particles larger than 2 mm, and providing the pressure flow required to disperse and refine the waste within the submerged spiral roller screen 4. Once the concentrated slurry deposited in the intermediate slurry hopper 14 reaches the required concentration, it is pumped to the rear mixer 11 to be mixed with admixtures, and then transported to transfer equipment or used for fluid filling during construction. This multi-source fluid filling slurry preparation station can prepare various types of slag into fluid filling slurry, greatly improving the utilization rate of slag, and producing high-quality, continuous, and efficient products.

[0058] According to a specific embodiment of the present invention, the submerged spiral roller screen 4 includes a feed cylinder 01, a roller screen cylinder 02 and a discharge cylinder 03 connected in sequence, and the inner wall of the submerged spiral roller screen 4 is provided with spiral conveying blades 05 for material conveying.

[0059] Please refer to this carefully. Figure 2-7 According to a specific embodiment of the present invention, the overflow water supply tank 15 is provided with an outer layer of cleaning fluid; the rotary screen flushing system 17 includes a liquid extraction pipe 010 and a slurry flushing assembly, the slurry flushing assembly being located below the surface of the inner layer of cleaning fluid, the slurry flushing assembly including a flushing power pump 011, a slurry suction device 012 and a turbulent flow nozzle 013 connected in sequence by pipes; the flushing power pump 011 includes a pump inlet 111 and a pump outlet 112, one end of the liquid extraction pipe 010 is connected to the outer layer of cleaning fluid, and the other end of the liquid extraction pipe 010 is connected to the pump inlet 111. The system is connected; wherein: the suction device 012 includes a clear liquid inlet 1225, a mud suction port 12111 and a slurry mixing outlet 12241. The clear liquid inlet 1225 is connected to the pump outlet 112 for sucking in the outer cleaning liquid. The mud suction port 12111 faces the rotary screen cylinder 02 for sucking in mud. The slurry mixing outlet 12241 is used to discharge the mixture of the outer cleaning liquid and mud. The slurry mixing outlet 12241 is connected to the inlet of the turbulent punch 013. The outlet of the turbulent punch 013 faces the rotary screen cylinder 02.

[0060] In the above embodiment, the feed cylinder 01 is used for feeding, and the raw slag flows into the feed cylinder 01 from the feed hopper 2. The discharge cylinder 03 is used for discharging. The rotary screen cylinder 02 is a mesh screen, which is conducive to the separation of mud and solids. In use, the raw slag enters the submerged spiral roller screen 4 through the feed hopper 2. As the submerged spiral roller screen 4 rotates, the spiral conveyor blades 05 push the raw slag forward. Since the bottom of the roller screen cylinder 02 is submerged below the water surface, the raw slag will move forward while soaking in the liquid. During this period, the slurry suction device 012 located directly below the roller screen cylinder 02 will suck in the slurry in the roller screen cylinder 02 and spray out turbulent flow through the turbulent flow punch 013 on the side of the roller screen cylinder 02. The turbulent flow continuously stirs the raw slag clumps in the roller screen cylinder 02, so that the internal particles are repeatedly washed. The washed particles are discharged from the slag outlet 5 of the discharge cylinder 03, while the fine slurry is deposited in the settling tank, realizing the rapid separation of particles and slurry.

[0061] More specifically, there are multiple suction devices 012, and the multiple suction devices 012 are spaced apart along the axial direction of the rotary screen cylinder 02; there are multiple turbulent punches 013, and the multiple turbulent punches 013 are spaced apart along the axial direction of the rotary screen cylinder 02, and the multiple turbulent punches 013 are arranged around the bottom of the rotary screen cylinder 02.

[0062] In this embodiment, the arrangement of the number and position of the suction pumps 012 is conducive to improving the suction efficiency, and the arrangement of the number and position of the turbulent jets 013 is conducive to improving the efficiency of dispersing the original slag clumps.

[0063] More specifically, the suction device 012 includes a low-flow fluid 121 and a mixing fluid 122 surrounding the low-flow fluid 121. The low-flow fluid 121 has a suction channel extending vertically through it, which consists of a first suction hole 1211 and a second suction hole 1212 connected together. The end of the first suction hole 1211 away from the second suction hole 1212 is a mud suction port 12111. The first suction hole 1211 is a conical hole that is larger at the top and smaller at the bottom. The second suction hole 1212 is a cylindrical hole with the same diameter as the bottom diameter of the first suction hole 1211. A protruding mounting ring plate 1213 is fixedly provided at the bottom of the low-flow fluid 121, and a liquid passage hole 12131 extending through it is provided on the mounting ring plate 1213. The mixing fluid 122 has a mixing channel extending vertically through it, which consists of a first mixing hole 1221 and a second mixing hole 1212 connected together. The system consists of two mixing holes 1222, a third mixing hole 1223, and a fourth mixing hole 1224. The diameter of the first mixing hole 1221 is larger than that of the second mixing hole 1222, and the connection between the two forms an installation step. The clear liquid inlet 1225 is located on the side wall of the mixing fluid 122 and communicates with the first mixing hole 1221. The end of the fourth mixing hole 1224 away from the third mixing hole 1223 is the slurry mixing outlet 12241. The lower part of the low fluid 121 is housed in the first mixing hole 1221, and the mounting ring plate 1213 is set to abut against the installation step. The outer wall of the low fluid 121 and the inner wall of the first mixing hole 1221 form a first mixing cavity 123. The clear liquid inlet 1225 communicates with the second mixing hole 1222 in sequence through the first mixing cavity 123 and the liquid passage hole 12131. The second slurry suction hole 1212 communicates with the second mixing hole 1222.

[0064] The slurry suction device 012 is used to suck up the slurry in the rotary screen cylinder 02. In this embodiment, the structure of the slurry suction device 012 is specifically designed. Its working principle is as follows: the flushing power pump 011 draws clear liquid with low solid content from the upper part of the outer sedimentation tank, and enters the first mixing chamber 123 through the clear liquid inlet 1225 of the slurry suction device 012, and then flows out through the liquid passage 12131 and the second mixing hole 1222. When the clear liquid flows out, the air in the slurry suction channel of the low fluid 121 is drawn in, forming a negative pressure chamber. Due to the existence of negative pressure, the slurry in the rotary screen cylinder 02 is quickly sucked into the first suction hole 1211, and then enters the second mixing hole 1222 through the second suction hole 1212. The slurry entering the second mixing hole 1222 mixes with the clear liquid in the second mixing hole 1222 to form a mixed liquid. After passing through the third mixing hole 1223, the mixed liquid flows out through the fourth mixing hole 1224. The mixed liquid flowing out from the suction pump 012 then enters the turbulent punch 013, which is arranged below the liquid surface on the side of the rotary screen cylinder 02. The mixed liquid sprayed by the turbulent punch 013 continuously washes and agitates the material of the submerged spiral rotary screen 4, quickly cleans the surface of the particles, and propels them forward with the spiral. The cleaned particles are discharged from the discharge cylinder 03 at the rear end of the submerged spiral rotary screen 4, realizing the separation of mud and solids.

[0065] More specifically, there are multiple liquid passage holes 12131, and these multiple liquid passage holes 12131 are evenly arranged around the center line of the slurry suction channel. The liquid passage holes 12131 are oblique holes. The slurry suction channel as a whole has a structure that gradually narrows in the vertical direction, and the mixing channel as a whole has a structure that gradually narrows in the vertical direction. The center lines of all liquid passage holes 12131 intersect the center line of the slurry suction channel at the same point P, which is located within the third mixing hole 1223 or the fourth mixing hole 1224. The first mixing hole 1221 and the second mixing hole 1222 are both... Cylindrical hole; the third mixing hole 1223 is a tapered hole with smaller upper and lower sections, the upper section of the fourth mixing hole 1224 is a cylindrical hole, and the lower section of the fourth mixing hole 1224 is a tapered hole with smaller upper sections and larger lower sections; the first mixing hole 1221, the second mixing hole 1222, the third mixing hole 1223 and the fourth mixing hole 1224 are coaxial, the first suction hole 1211 and the second suction hole 1212 are coaxial, and the first mixing hole 1221 and the first suction hole 1211 are coaxial; point P is located on the axis of the first suction hole 1211.

[0066] In this embodiment, both the suction channel and the mixing channel adopt a tapered structure, which facilitates the high-speed ejection of the clear liquid and slurry after mixing. Multiple liquid passage holes 12131 are provided to facilitate the rapid outflow of the clear liquid. The centerline of the liquid passage intersects the centerline of the suction channel at point P and is located on the axis of the first suction hole 1211. This structure facilitates direct collision and thorough mixing of the clear liquid and slurry; it also facilitates the formation of negative pressure to drive the low-fluidity 121 to draw in the slurry.

[0067] More specifically, the slurry suction and flushing assembly also includes a mounting plate 014, which has through mounting holes 141. The number of mounting holes 141 is the same as the number of slurry suction devices 012. A raised mounting flange 124 is provided on the upper outer side of the low fluid 121 or the upper outer side of the mixed fluid 122. The low fluid 121 and the mixed fluid 122 are fixedly connected. The mixed fluid 122 is installed on the lower part of the mounting plate 014 through the mounting flange 124. The mud suction port 12111 is set directly opposite the mounting hole 141. A slurry suction device 012 is installed below each mounting hole 141.

[0068] In this embodiment, the mounting plate 014 facilitates the fixing and installation of the grout suction device 012. Since the mounting plate 014 has mounting holes 141, and the first grout suction hole 1211 is positioned directly opposite the mounting holes 141, the normal grout suction of the first grout suction hole 1211 is not affected. The mounting flange 124 allows for the use of threaded connections to fix the flange to the mounting plate 014, thus enabling the installation of the grout suction device 012 and improving the convenience and stability of the connection.

[0069] More specifically, the slurry flushing assembly is positioned directly opposite the bottom of the rotary screen cylinder 02; the plane passing through the axis of the rotary screen cylinder 02 is designated as the vertical symmetry plane 021 of the rotary screen, and the angle between the spray direction of the turbulent jet 013 and the vertical symmetry plane 021 of the rotary screen is M, where M = 28°-48°.

[0070] In this embodiment, the injection direction of the turbulent jet 013 is specifically defined, causing it to be injected at a small angle towards the vertical axis of symmetry of the rotary screen cylinder 02. The turbulent jet 013 is arranged in an array and ejected through two or more oblique holes arranged spirally along the axis of the rotary screen cylinder 02. With this structure, the effective area of ​​the turbulent jet 013 is large, and the small angle of injection is beneficial for dispersing mud clumps.

[0071] More specifically, the end of the suction pipe 010 away from the slurry flushing assembly is located above the outer cleaning fluid.

[0072] In this embodiment, the upper part of the outer cleaning fluid is a clear liquid with a relatively low mud content. Extracting the cleaning fluid from this part each time helps to further improve the solid-liquid separation effect.

[0073] This invention also discloses a method for using a multi-source fluid-filled mud preparation station as described above, including: a crushing and refining method, a screening method, and a mixing method; the crushing and refining method is as follows: the original slag is crushed and refined by a double-crusher 1 to obtain refined slag, which enters the feed hopper 2 and is fed into the submerged spiral roller screen 4 by a feeder; the screening method is as follows: the submerged spiral roller screen 4 screens the refined slag to obtain a mixture of solid slag and mud after primary separation; the roller screen flushing system 17 flushes the submerged spiral roller screen 4, and the roller screen flushing system 17 also flushes the mud after primary separation. The mud is drawn and separated to the submerged spiral roller screen 4 and deposited in the roller screen funnel 13. Under the action of the vibrating screen 6, the mud with a particle size smaller than the preset width after the first separation enters the intermediate collection hopper 14 to achieve the first separation. The remaining part is extracted and recovered by the fine mud recovery system to the submerged spiral roller screen 4 for washing and separation again. Then, it is separated a second time by the roller screen funnel 13, and finally the concentrated mud is deposited in the intermediate collection hopper 14. The mixing method is as follows: the concentrated mud that reaches the preset qualified concentration value is drawn to the rear mixer 11 and mixed with the admixture to obtain the fluidized filling mud.

[0074] In this embodiment, after obtaining the fluidized filling slurry, it is pumped to a transfer device or used for fluidized filling during construction.

[0075] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; and they can also refer to a "transmission connection," that is, a power connection through various suitable methods such as belt drive, gear drive, or sprocket drive. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A multi-source fluid-filled mud preparation station for preparing fluidized mud, characterized in that, The multi-source fluid-filled mud preparation station includes: a double-stage fine crusher, a feeding device, a submerged spiral roller screen, a vibrating screen, a fine mud recovery component, a rear-end mixer, a reagent tank, and a slurry pump. The submerged spiral roller screen is cylindrical in shape and is arranged horizontally. The lower part of the submerged spiral roller screen is submerged in an inner cleaning fluid located in a roller screen funnel. The roller screen funnel is also used for mud sedimentation. An intermediate slurry collection hopper is located outside the roller screen funnel, and an overflow water supply tank is located outside the intermediate slurry collection hopper. The bottom of the intermediate slurry collection hopper penetrates the overflow water supply tank. The roller screen funnel is shaped like a bucket with sieve holes. The vibrating screen and the roller screen funnel are connected... The hoppers are connected; the double-flying fine crusher is used to crush the original slag and obtain refined slag; the feeding device is used to transport the refined slag to the submerged spiral roller screen; the submerged spiral roller screen is used to achieve mud-solid separation of the refined slag; the vibrating screen is used to transmit vibration power to the roller screen hopper; the fine mud recovery component is used to transport the mud in the roller screen hopper to the submerged spiral roller screen; the slurry pump is used to recover the mud in the intermediate slurry collection hopper to the rear mixer; the reagent tank is used to add admixtures to the rear mixer; the rear mixer is used to mix the mud and admixtures therein to obtain the fluidized filling mud.

2. The multi-source fluid-filled mud preparation station according to claim 1, characterized in that, The feeding equipment includes a feeding hopper and an electromagnetic feeder. The two ends of the submerged spiral roller screen are the feed inlet and the slag outlet, respectively. The output ends of the feeder and the fine mud recovery system are both connected to the feed inlet. The input end of the fine mud recovery system is connected to the bottom of the roller screen hopper. The inner cleaning fluid is tap water or groundwater.

3. The multi-source fluid-filled mud preparation station according to claim 2, characterized in that, The multi-source fluid-filled mud preparation station also includes a feed pump, the input end of which is connected to the bottom of the rear mixer, and a screen flushing system for flushing the submerged spiral roller screen is arranged at the bottom of the submerged spiral roller screen.

4. The multi-source fluid-filled mud preparation station according to claim 3, characterized in that, The fine slurry recovery system includes a hydrocyclone and a hydrocyclone power pump connected together. The hydrocyclone includes an overflow pipe, the output end of which extends into the submerged spiral cyclone screen through the feed port. The input end of the hydrocyclone power pump is connected to the screen funnel.

5. The multi-source fluid-filled mud preparation station according to claim 4, characterized in that, The depth of the submerged spiral roller screen is 1 / 4 to 1 / 2 submerged in the inner cleaning solution.

6. The multi-source fluid-filled mud preparation station according to claim 5, characterized in that, The multi-source fluid filling mud preparation station also includes a water level balancing pump, the inlet of which is located at the bottom of the overflow water supply tank, and the outlet of which is located at the top of the intermediate slurry collection hopper.

7. The multi-source fluid-filled mud preparation station according to claim 6, characterized in that, The sieve holes are located on the side wall of the rotary screen funnel. The sieve holes are vertically arranged strip-shaped through holes, and the width of the strip-shaped through holes is equal to a preset width.

8. The multi-source fluid-filled mud preparation station according to claim 7, characterized in that, The submerged spiral roller screen includes a feed cylinder, a roller screen cylinder, and a discharge cylinder connected in sequence, and the inner wall of the submerged spiral roller screen is provided with spiral conveying blades for material transfer.

9. The multi-source fluid-filled mud preparation station according to claim 8, characterized in that, The overflow water tank contains an outer layer of cleaning fluid; the rotary screen flushing system includes a suction pipe and a slurry flushing assembly, which is located below the surface of the inner layer of cleaning fluid. The slurry flushing assembly includes a flushing power pump, a slurry suction device, and a turbulent flow nozzle connected in sequence via pipes; the flushing power pump includes a pump inlet and a pump outlet, one end of the suction pipe is connected to the outer layer of cleaning fluid, and the other end of the suction pipe is connected to the pump inlet; wherein: the slurry suction device includes a clear liquid inlet, a mud suction port, and a slurry-water mixing outlet, the clear liquid inlet is connected to the pump outlet for sucking in the outer layer of cleaning fluid, the mud suction port faces the rotary screen cylinder for sucking in mud, the slurry-water mixing outlet is used to discharge the mixture of the outer layer of cleaning fluid and mud, and the slurry-water mixing outlet is connected to the inlet of the turbulent flow nozzle, the outlet of the turbulent flow nozzle faces the rotary screen cylinder.

10. A method of using the multi-source fluid-filled mud preparation station as described in claim 9, characterized in that, include: The system includes a crushing and refining method, a screening method, and a mixing method. The crushing and refining method involves: the raw slag being crushed and refined by the double-crusher to obtain refined slag; the refined slag entering the feed hopper and then the feeder into the submerged spiral rotary screen; the screening method involves: the submerged spiral rotary screen screening the refined slag to obtain a mixture of solid slag and primary separation slurry; the rotary screen flushing system flushing the submerged spiral rotary screen, and also pumping and separating the primary separation slurry into the submerged spiral screen. The mud particles smaller than the preset width in the slurry after the first separation are deposited in the slurry hopper. Under the action of the vibrating screen, the mud particles are separated into the intermediate collection hopper, achieving the first separation. The remaining part is extracted and recycled by the fine mud recovery system to the submerged spiral slurry for washing and separation again. Then, it is separated again by the slurry hopper, finally obtaining the concentrated mud deposited in the intermediate collection hopper. The mixing method is as follows: the concentrated mud that reaches the preset qualified concentration value is extracted to the rear mixer and mixed with the additive to obtain the fluidized filling mud.

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